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The tab gate

Tunnel Gate Injection Molding

Within the larger field of injection molding, there is a particular technique known as tunnel gate injection molding. The process begins with the construction of a covert channel, similar to a tunnel, or gate, through which the plastic melts and flows into the mold. In comparison to more conventional dated techniques, this tunnel gate is engineered to reduce the visibility of gate marks on the finished molded product.

Purpose and Benefits

The production of high-quality plastic components that have an exceptional surface finish is the major objective of the tunnel gate injection molding processing. By utilizing a gate that is similar to a tunnel, obvious faults and gate marks on the finished product are reduced, which in turn enhances the product’s visual attractiveness. Furthermore, this method makes it possible to manufacture intricate and delicate components while yet preserving the integrity of the structure. In addition, the benefits include a reduction in the amount of material that is wasted, an increase in the efficiency of production, and an improvement in the uniformity of the manufacturing process. Tunnel gate injection molding, in general, provides a method for producing plastic components that are smoother and more refined, which can be utilized in a variety of industries and applications.

Components of Tunnel Gate Injection Molding

Mold Design

When tunnel gate injection molding, the shape of the mold is very important for the quality of the parts that come out of it. Making a mold hole that fits the tunnel gate structure takes a lot of careful planning and engineering. During the mold design phase, things like part shape, cooling channels, and gate placement are carefully thought out to make sure that the molten plastic flows smoothly and that high-quality parts are made.

Tunnel Gate Structure

A crucial element, the tunnel gate structure delineates the conduit-like passageway by which molten plastic material enters the cavity of the mold. An intricate design is incorporated into the mold to promote the plastic’s controlled and uninterrupted flow, thereby reducing the likelihood of discernible gate markings appearing on the final products. By customizing the geometry and dimensions of the tunnel gate structure to the particular specifications of the molded component, flow-related defects are minimized and accurate filling is ensured.

Injection Molding Machine

The injection molding machine that is used in the process of tunnel gate injection molding is an essential component that is accountable for melting the plastic resin and injecting it into the mold cavity. During the injection process, it is comprised of numerous critical components, such as the clamping unit, which is responsible for holding the mold in place, the barrel and screw assembly, which is responsible for melting and pressurizing the plastic, and the hopper, which is used for feeding the resin. The precision of the machine, the control systems it employs, and its capacity to keep the pressure and temperature constant are all essential elements that contribute to the accomplishment of tunnel gate injection molding by ensuring its success.

Process Steps of Tunnel Gate Injection Molding

Material Preparation

Material preparation is the first step in the process. During this step, the raw plastic material, which is often in the form of pellets or granules, is chosen based on the properties that are needed for the final product. After making sure that the material is accurately measured, it is then loaded into the hopper of the injection molding machine so that it can be melted and then injected into the mold.

Mold Setup

Mounting the planned mold into the injection molding machine is an essential part of the establishment of the mold. The mold halves are clamped together in a secure manner, which results in the formation of a cavity into which the molten plastic will be injected. In preparation for the injection procedure, the tunnel gate structure that is contained within the mold has been aligned and positioned suitably.

Injection Process

The plastic material is heated and melted inside the barrel of the machine, which is the first step in the injection process. Once the plastic has reached the molten state, it is pumped into the mold cavity through the tunnel gate at a significantly high pressure. The cavity is filled with the material in a controlled manner, which causes the material to take the shape of the mold and finally form the required part.

Cooling and Solidification

Immediately following the filling of the mold cavity, the chilling phase will start. The plastic that has been put into the mold begins to cool down and become more solid. The mold contains cooling channels that help to regulate the temperature, which in turn helps to ensure that the solidification process is uniform and reduces the likelihood of warping or faults in the finished product. It is essential to complete this phase in order to achieve the desired qualities of the part and the dimensional correctness.

Part Ejection

As soon as the plastic has reached the desired level of cooling and solidification, the mold will open, and the freshly created component will be expelled. Mechanisms or ejection pins are responsible for pushing the component out of the mold chamber. Before the component is ready for use or further assembly, post-processing may be carried out. This may include the removal of any excess material or any extra finishing operations. Through the completion of this final stage, the tunnel gate injection molding process is finished, resulting in the production of a finished plastic component that has increased surface quality.

Advantages of Tunnel Gate Injection Molding

Reduced Surface Defects

Tunnel gate injection molding provides a major benefit by reducing the number of surface flaws that are present on the elements that are ultimately formed. A reduction in the incidence of common defects, such as flow lines, weld lines, and visible gate marks, is achieved through the regulated flow of molten plastic through the construction of the tunnel gate. As a consequence, the surfaces become smoother, and the quality of the part is enhanced, hence conforming to higher aesthetic and functional standards.

Better Aesthetic Finish

It is possible to produce excellent aesthetic finishes on molded plastic products through the use of tunnel gate injection molding, which is one of the remarkable advantages of this process. By employing a gate that is similar to a tunnel, this technique reduces the amount of visible gate residues on the final product, so improving its overall appearance. The smoother surface finish that is achieved via the use of this process leads to the creation of an end product that is more visually appealing, thereby satisfying demanding standards for design and cosmetics.

Minimized Gate Marks

Through the use of tunnel gate injection molding, the presence of gate marks on the finished products can be considerably reduced or eliminated entirely. The conventional injection molding procedures frequently result in the emergence of visible marks at the point where the plastic enters the mold, which has an impact on the surface quality and overall look. Tunnel gating is a technique that reduces the appearance of these marks by deliberately controlling the flow of molten plastic. This results in components that are cleaner and more visually appealing, which is especially important for applications that require a flawless surface quality.Tunnel Gate Injection Molding

Applications and Industries Using Tunnel Gate Injection Molding

Automotive

The automobile industry makes heavy use of tunnel gate injection molding for the production of a wide range of components, including dashboards, door panels, interior trim, and other complex elements that demand absolute precision. Because it improves surface quality and dimensional precision, the approach is perfect for uses in the automotive industry, where form and function are of the utmost importance.

Electronics

Complex components, housings, connectors, and casings are made utilizing tunnel gate injection molding in the electronics industry. The technique guarantees the creation of long-lasting and aesthetically pleasing products by meeting the demanding standards of the electronics industry through the fabrication of parts with low flaws and exceptional surface finishes.

Pharmaceuticals for Human Use

The medical device and equipment industries rely heavily on tunnel gate injection molding. Housings, connectors, and sterile medical instruments are just a few examples of the complex and precisely made parts that are possible because to this process. It is essential in this highly regulated industry to use this approach because it can produce sterile parts, attain great surface finishes, and meet rigorous quality standards.

Product Categories for Consumers

Household items, packaging, toys, and appliances are just a few of the many consumer goods that can be molded using tunnel gate injection molding. Producing parts with higher surface finishes is made possible by this method, which satisfies the aesthetic needs of consumer items without compromising their structural integrity. Producing high-quality consumer items for a variety of markets is made possible by its adaptability in making complicated shapes and designs. Learn more about TPU Overmolding

Recap of Tunnel Gate Injection Molding

Within the larger field of injection molding, tunnel gate injection molding is a distinct specialty. Reduced surface flaws, improved aesthetic finishes, and fewer gate markings on the finished molded parts are the outcomes of this process, which entails creating a tunnel-like path through which molten plastic is fed into a mold cavity. This technology is highly favored in many industries because to its accuracy in filling intricate molds while preserving top-notch surface finishes.

Future Potential and Developments

Tunnel gate injection molding seems to have strong future prospects. Improvements in materials, mold designs, and injection molding technologies are expected to push this technology to new heights of efficiency and capability. The optimization and widespread use of tunnel gate injection molding might be spurred by developments in process control and automation, as well as by advances in 3D printing for mold fabrication. Its future uses could be expanded and it could help create more environmentally friendly production methods if it keeps integrating with digital technology and sustainable practices. As a whole, tunnel gate injection molding has a lot of room to grow and improve, which might lead to more efficiency, better quality, and more precise plastic component production.

Sincere Tech, we are one of the top 10 best leading plastic mold companies in China. We offer wide range of custom plastic injection molds, die casting molds, metal parts, CNC machining and mold components. Through ongoing investments in research and development, we deliver cutting-edge solutions that address the evolving needs of our customers. As one of the best injection mold suppliers in China, we pride ourselves on our commitment to excellence.

Quality is of the most importance to us, to make sure we make high quality molds, we will use CMM measuring machine to measure all of mold components, electrodes, and all of final molding parts, to make sure all of dimensions are under the tolerance, We will test the function of parts, materials to make sure that the final part will meet your requirements.

When you partner with Sincere Tech as your preferred China mold maker, you can expect the highest level of professionalism, expertise, and innovation. We are dedicated to helping you bring your ideas to life, delivering superior products that excel in performance, durability, and cost-effectiveness.

Our expanded capabilities include:

  1. Rapid Prototyping: We offer rapid prototyping services (3D printing or CNC machining prototypes) to quickly transform your rough design into useable prototypes, and testing, redesign suggestion etc.
  2. Precision CNC machining: Our advanced CNC machines enable us to create high-quality mold components with tight tolerances, this will ensure currently tolerance and precision in the injection-molded products.
  3. Overmolding: We make overmolding for some handle tools, some of overmoling are used in the die casting molds as well, contact for quote for your overmolding project.
  4. Insert Molding: insert molding is similar to overmolding but will be little different, insert molding normally use metal parts as substrate and overmolding use plastic part as substrate.
  5. Two-Shot Molding: With two-shot molding, we can produce complex, multi-material components in a single operation, reducing assembly requirements and enhancing design possibilities. Two shot molding is more complex than insert molding or overmolding, and two shot molding requires two shot injection molding machine.
  6. Value-Added Services: In addition to injection molding, die casting, and machining, we offer a range of value-added services, including product silk-screen, painting, assembly, testing, certificate, packaging, and logistics support, streamlining your supply chain and reducing costs.

Partner with Sincere Tech China mold maker for your custom injection molding, die casting and machining needs, we will offer you the best quality and fast lead time, contact us for quote in 24 hours.

Injection Mold

Injection Mold

In modern industrial production, mold is an important technology used in shaping products (including metal products and nonmetal products) for all of the industries. Meanwhile, it is the ‘magnifying glass of efficiency and profit’ to the raw material and equipment, because the value of the final product made in the mold is often tens of, even hundreds of times as valuable as that of the mold itself.

The mold industry is the basic industry of the national economy, and it is called ‘the mother of industry’. Every aspect of human life such as clothes, food, housing, and transportation is closely connected with the mold industry. Therefore, the level of injection mold technology has been a significant symbol to measure a country’s developing level of mechanical industry.

And mold can be divided into two kinds of them: mold for metal products and nonmetal products.
The metal products mold include cold-press mold, pressing mold, forging mold, press casting mold, precise casting mold, stamping tool, punch tool, and dust metallurgy mold, etc. These kinds of mold have extensive apply-cation in electrode-cranial products, automobiles, aviation instruments, and other metal products.
The nonmetal products include plastic injection mold, ceramic mold, rubber mold, glass mold, food mold, and ornament mold. These kinds of molds have extensive apply cation in our lives, at this page we are talking about injection mold. this is the most papular modern technology which used in our life everywhere.

An injection mold used to form a plastic product using the injection molding process. A standard injection mould is made of a stationary or injection side containing one or more cavities and a moving or ejection side.

The resin, or raw material for injection moulding, is usually in pellet form and is melted by heat and shearing forces shortly before being injected into the mould. The channels through which the plastic flows toward the chamber will also solidify, forming an attached frame. This frame is composed of the sprue, which is the main channel from the reservoir of molten resin, parallel with the direction of the nozzle, and runners, which are perpendicular to the direction of the nozzle and are used to convey molten resin to the gate(s), or point(s) of the gate and feeding the molten material into the mold cavity. The sprue and runner system can be cut off and recycled after molding. Some moulds are designed such that it is automatically stripped from the part through the action of the mould. For example, the submarine gate or banana gate, if using hot runner systems then there will be no runners.

The quality of the injection molded part depends on the quality of the mould, the care taken during the moulding process, and upon details of the design of the part itself. It is essential that the molten resin is at just the right pressure and temperature so that it flows easily to all parts of the mold. The parts of the injection mold must also come together extremely precisely, otherwise small leakages of molten plastic can form, a phenomenon known as flash. When filling a new or unfamiliar mould for the first time, where shot size for that particular mould is unknown, a technician should reduce the nozzle pressure so that the mold fills, but does not flash. Then, using that now-known shot volume, pressure can be raised without fear of damaging the mould. Sometimes factors such as venting, temperature, and resin moisture content, can affect the formation of flash as well.

Injection Mold Material

Traditionally, molds have been very expensive to manufacture therefore they were usually only used in mass production where thousands of parts are being produced. Injection Molds are typically constructed from hardened steel or aluminum. The choice of material to build a mold is primarily one of economics. Steel molds generally cost more to construct, but their longer lifespan will offset the higher initial cost over a higher number of parts made in the mold before wearing out. Aluminum molds can cost substantially less, and when designed and machined with modern computerized equipment, can be economical for moulding hundreds or even tens of parts.

Requirements for the injection mold

ejection system

An ejection system is needed to eject the molded part from the cavity at the end of the molding cycle. Ejector pins built into the moving half of the mold usually accomplish this function. The cavity is divided between the two mold halves in such a way that the natural shrinkage of the molding causes the part to stick to the moving half. When the mold opens, the ejector pins push the part out of the mold cavity.

cooling system

A cooling system is required for the mold. This consists of an external pump connected to passageways in the mold, through which water is circulated to remove heat from the hot plastic. Air must be evacuated from the mold cavity as the polymer rushes in. Much of the air passes through the small ejector pin clearances in the mold. In addition, narrow air vents are often machined into the parting surface; only about 0.03 mm (0.001 in.) deep and 12 to 25 mm (0.5 to 1.0 in.) wide, these channels permit air to escape to the outside but are too small for the viscous polymer melt to flow through.

All of the information we referred from Wikipedia, but we sort out together for easy to read, if you want to know more, please go to injection mold Wikipedia.

 

Injection Molding Process

Injection Molding Process:Plastic Processing, Make Parts From Plastic Material

Finding the right source for your injection molded thermoplastic parts is as easy as selecting DONGGUAN SINCERE TECH CO.LTD. With SINERE TECH, you are guaranteed professional quality assurance standards, the latest in technological equipment, and innovative, cost-efficient manufacturing techniques.

Injection Molding Process: A Brief Description

Thermoplastic injection molding is the most widely used of all plastic processing methods. Injection molding is a manufacturing technique for making parts from plastic material. Molten plastic is injected at high pressure into a mold, which is the inverse of the desired shape.

Thermoplastics are those which, once formed, can be heated and reformed over and over again.

PP injection molding

PP injection molding

The mold is made from metal, usually either steel or aluminum, and precision-machined to form the features of the desired part. SINCERE TECH provides the highest quality economical plastic molds available today, with less moving parts to reduce maintenance and repair costs.

The injection molding machine reduces pelletized resins and coloring agents into a hot liquid. This slurry, or “melt”, is forced into a cooled mold under tremendous pressure. After the material solidifies, the mold is unclamped and a finished part is ejected.

An injection-molding machine performs the entire process of plastic molding.  These machines serve to both heat the plastic material and form it.  Using different molds the shape of the produced components may be changed.

Injection molding machines have two basic parts, the injection unit, which melts the plastic and then injects or moves it into the mold, and the clamping unit, which holds the mold shut during filling. The unit clamps the mold in a closed position during injection, opens the mold after cooling, and ejects the finished part.

You can go to our home page by https://www.plasticmold.net/ to know more information about injection molding service and injection molding process

injection molding parting line

Plastic Injection Mold Parting Line and Mold Gate

What is Plastic Injection Mold Parting Line

Plastic injection mold parting line is the boundary or separation between the two halves of a mold used in the injection molding process. Injection molding is a manufacturing technique where molten plastic material is injected into a mold cavity to create a shaped product. The mold is typically made up of two halves – the stationary half, called the “fixed” or “A” side, and the moving half, called the “cavity” or “B” side.

The parting line is the meeting point of these two mold halves. When the mold opens after the plastic has been injected and cooled, the parting line is where the two halves separate, allowing the molded part to be ejected. The location and design of the parting line are crucial aspects of mold design and can have significant implications for the final product.

In Injection Molding (or almost in any type of molding), one of the most basic concepts is Parting line. A Mould is divided into two parts (more for complex designs) so that it comes apart in order to remove the product and reuse it again and again. These two parts are, namely, Core and Cavity.

While doing injection molding the cavity needs to be placed inside the core before pouring the molten plastic in. The line where these two parts meet is called the mold parting line. The component produced thus has a single continuous line around its perimeter. This line is usually visible naked eye as a slight discontinuity on the surface of the element after it is removed from the mold.

Plastic Injection Mold Parting Line

Key consideration when design plastic injection mold parting line

Designing the plastic injection mold parting line is a critical aspect of the overall mold design process. The parting line’s placement and design can impact the quality, functionality, and manufacturability of the final plastic product. Here are key considerations when designing a plastic injection mold parting line:

  1. Functionality:

    • Ensure that the parting line does not interfere with the functionality of the final product. It should not affect critical features or assembly.
  2. Aesthetics:

    • Minimize the visibility of the parting line on the finished product. Consider the overall appearance and surface finish of the molded part.
  3. Draft Angles:

    • Incorporate draft angles on the part geometry to facilitate easy ejection from the mold. Draft angles help prevent the part from getting stuck and reduce the likelihood of damage during ejection.
  4. Material Flow:

    • Analyze the material flow during the injection molding process. The parting line should allow for even material distribution to avoid defects such as flow lines, warping, or sink marks.
  5. Gate Location:

    • Coordinate the parting line with the gate location. Proper gate placement helps control material flow and minimizes visible gate marks on the final part.
  6. Moldability:

    • Optimize the mold design for ease of manufacturing. A well-designed parting line can simplify the mold construction, reduce production costs, and improve overall efficiency.
  7. Complexity:

    • Minimize the complexity of the mold design. While some parts may require complex parting lines, simpler designs are often more cost-effective and easier to manufacture.
  8. Assembly Considerations:

    • If the molded part is part of an assembly, consider how the parting line aligns with other components. Ensure that the parting line allows for easy assembly and alignment.
  9. Undercuts and Side Actions:

    • Identify and address any undercuts or features that may require side actions. Side actions can impact the complexity of the mold design and affect part ejection.
  10. Tolerance and Precision:

    • Ensure tight tolerances and precision in the mold design to produce high-quality parts. Pay attention to the alignment and accuracy of the mold components along the parting line.
  11. Mold Release Agents:

    • Consider the use of mold release agents to aid in part ejection and minimize friction along the parting line.
  12. Simulation and Analysis:

    • Utilize computer-aided design (CAD) tools and mold flow analysis to simulate the molding process and assess the impact of different parting line configurations on the final product.
  13. Material Selection:

    • Consider the type of plastic material being used and its properties. Different materials may have specific requirements for mold design and parting line placement.

By carefully addressing these considerations during the mold design process, engineers can optimize the parting line for successful plastic injection molding, resulting in high-quality and cost-effective production.

What is plastic injection mold gate

In plastic injection molding, the gate is a crucial element in the mold design. It serves as the point through which molten plastic enters the cavity of the mold. The gate is essentially the opening that allows the plastic material to flow from the runner (a channel that distributes the molten plastic) into the mold cavity where the final part is formed.

There are several types of gates used in injection molding, and the choice of gate design depends on factors such as the type of plastic material, the geometry of the part, and the desired properties of the finished product.

Types of Plastic Injection Mold Gates

There are several types of gates used in plastic injection molding, each with its own advantages and considerations. The choice of gate type depends on factors such as the part design, material properties, and production requirements. Here are some common types of plastic injection mold gates:

  1. Sprue Gate:

    • The sprue gate is the primary channel through which molten plastic enters the mold cavity.
    • Located at the thickest part of the mold, it is connected to the runner system.
    • It is easy to design and is often used in molds with single-cavity configurations.
  2. Runner Gate:

    • The runner gate is a channel that distributes the molten plastic from the sprue to multiple cavities in the mold.
    • It can have various configurations, including a single runner, multiple runners, or a hot/cold runner system.
    • Runner gates are commonly used in multi-cavity molds to facilitate efficient material distribution.
  3. Direct (or Edge) Gate:

    • The direct gate is connected directly to the part, typically at the edge.
    • It is suitable for simple part geometries and is relatively easy to design.
    • However, it may leave visible gate marks on the finished product.
  4. Submarine Gate:

    • The submarine gate is located beneath the surface of the part, making the gate mark less visible.
    • It is often used when aesthetics are a significant concern, and a clean appearance is required on the finished part.
  5. Tab Gate:

    • The tab gate is a small gate type often used for small parts or parts with intricate details.
    • It leaves a small tab or vestige on the part, which may need to be removed in secondary operations.
  6. Fan Gate:

    • The fan gate distributes molten plastic in a fan-shaped pattern across the mold cavity.
    • It helps reduce the pressure on the mold and minimizes visible gate marks on the finished part.
    • Commonly used for cosmetic parts where gate visibility is a concern.
  7. Tunnel Gate:

    • The tunnel gate is a type of gate designed to minimize gate marks on the finished product.
    • It is often used for parts with specific cosmetic requirements.
  8. Cashew Gate:

    • The cashew gate is named for its shape, which resembles a cashew nut.
    • It is a variation of the fan gate and is designed to minimize gate vestiges on the part.

The selection of the appropriate gate type is a critical aspect of mold design, and it depends on factors such as part geometry, material characteristics, production volume, and desired part quality. Mold designers carefully consider these factors to optimize the injection molding process and achieve the best results.

These are the two types of irregularities that appear on the surface of a component manufactured by the injection molding process. In order to separate the element from the mold easily, any part of the element must not have any indentation or protrusion that prohibits part ejection from an image. This type of intrusion is called an undercut feature. Any overhanging features must also be avoided during the process although these intrusions are used in processes like overmolding or double shot injection molding. 

In order to prevent these intrusions and to remove the part easily from the mold, a draft angle is needed. The draft angle is defined relative to the Plastic Injection Mold Parting. If these measures are not taken while the mold manufacturing process, more complex types of moulds can be made, but this adds significantly to the cost of manufacturing.

In all, Parting lines are one of the main aesthetic problems that can happen with Injection molded plastic parts. In order to have an aesthetically pleasing design which is robust at the same time, one needs to take care of the parting line as it affects how fast the molten plastic cools and solidifies as well as how many layers it forms which affects the friction coefficient of the part.
 
If you have any question about Plastic Injection Mold Parting please contact our technical department, if you have an injection molding service requirement, you are welcome to send us the requirement for a quotation, you will lose nothing but have our good price and suggestion to help your project, we will never share your data to any others, we can sign an NDA document to avoid any issue.
Plastic Injection Moulding China

Plastic Injection Moulding China

Metal Injection Molding China

Metal injection molding China companies offer high quality and low  cost metal injection molding, Sincere Tech provides metal injection molding parts to the world, We are A China mold company, offer plastic injection molding, metal injection molding, die casting, stamping, assembly, OEM manufacturing service to the world

What is metal injection molding

Metal Injection moldingMetal injection molding, or also known as MIM, is a process of metalworking that is used to make or to create complex and small metal parts in higher efficiency. This method is used by a lot of varieties of industries and applications. If you want to know more about MIM metal injection molding, you can get the best information about this industrial method from this article.

Metal injection molding is a kind of great combination of the plastic injection molding process and the powder metallurgy. This method was invented initially by Karl Zueger in 1973, but the industrial companies had not adopted this method until the 1980s. Since metal injection molding comes with a lot of beneficial things for business and company, this method becomes quite popular among many metal industrial companies.

Metal injection molding process

The process of metal injection molding is quite simple and similar to the injection molding process for plastic. First, fine metal powders are combined with plastic binders. It allows the metal to be injected to the mold. The part then will turn into a green part or a molded part before the binders are removed.

Solvents and thermal processes then removed the binders of this green part. As the last stage of the metal injection molding, the resultant metal part is then sintered in appropriate temperature to fasten the particles but not melting the material.

Surely, there will be many advantages from many aspects that you can gain by applying metal MIM injection molding in your metal industrial company. If we are talking about the general advantages, we will find some advantages such as higher efficiency in cost and a bigger quantity of production amount. However, you can also find other specific benefits offered by metal injection moldings such as the ability to create complex geometries, excellent surface finish, and higher final density up to 93 to 99 percent.

You can also get a lot of easiness in making or creating your products or parts with this MIM injection molding process.

First, you can get easiness to design your products as you wish. Even the most complicated geometrical shape that will be very difficult to be created by conventional powder metal processes could be handled well with this method.

Second, you can get more enhanced details. Metal MIM injection molding allows you to create some difficult shapes such as dovetails, slots, complex curved surfaces, undercuts, as well as threads. Besides, this method also allows you to produce cylindrical parts that have greater length and diameter ratios.

However, you can also find some limitations of metal MIM injection molding. To maintain the quality of the part produced through this certain method, the size of the parts is limited to less than 100 grams. Then, in order to effectively remove the thermoplastic binder from the part without causing damage, the maximum section thickness generally is less than 0.25 inches.

For very small dimension, the tolerance is typically more or less 0.5 percent and down to for about 0.025 mm. In metal injection molding, tighter tolerances need a secondary machine or grinding operation. However, those limitations are intended to keep the quality of the parts or products high. Surely, maintaining the quality of the products will be the main important consideration.

How to find a reliable metal injection molding companies in China

Here are a few steps to help you find reliable metal injection molding companies in China:

  1. Research online: Look for metal injection molding companies in China and read reviews and feedback from their customers. You can also check their website and social media pages.
  2. Verify their certification: Check if the company is certified by ISO or other recognized organizations. This will ensure that they follow standard practices and their products meet international quality standards.
  3. Request for samples: Ask for samples of their products to see the quality and precision of their metal injection molding process.
  4. Check their experience: Look for a company with industry experience and expertise in metal injection molding. This will ensure that they have the technical know-how to produce quality products.
  5. Ask for references: Request for references from their past clients to know about their experience working with the company.

So, if you are interested to apply metal MIM injection molding in your business and company, you can start by looking for more information about this technology. Then, you can continue by choosing the best mould suppliers for your metal injection molding project.

If you have any project in hands welcome to contact us.