Metal Injection Molding MIM Glasses Parts

Introduction of Metal Injection Molding Glasses Parts

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. is the earliest enterprise that researches and develops metal injection molding in China. Now Zhongwei Precision provides powder metallurgy MIM injection molding eyeglass frame hinges for many well-known eyewear manufacturers at home and abroad.

It can be made complex, with patterns on the surface, lettering, LOGO, and various signs that are concave and protruding.

Metal injection molding is a molding method in which a plasticized mixture of metal powder and its binder is injected into a mold. It is to first mix the selected metal powder with a binder, and then granulate the mixture before injection. The shape required for forming. The polymer imparts its viscous flow characteristics to the mix, which aids uniformity in forming, cavity filling and powder filling.

1. Since the complex cavity can be formed by one injection, it saves a lot of machine tools, fixture tools and human resources for processing.

2. The cavity of the glasses spring shell can be optimized to make the spring shell and the spring core more precise.

3. The concave and convex anti-separation eliminates the problem of easy separation when the original spring core is matched with the glasses spring shell.

4. A large number of straight-walled design structures are used in the manufactured spring shell;

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. is a private enterprise specializing in the manufacture of powder metallurgy parts. After more than 20 years of development, it has a strong technical team composed of many senior talents in the powder metallurgy industry, and obtained the National Powder Metallurgy Research Institute. The technical support of the company is dedicated to provide intimate supporting services for the majority of metal parts buyers at home and abroad.

Product Introduction

1. Implementation standards: the company strictly implements ISO9001, ISO14001, IATF16949 certification

The products have passed the certification of ROHS, FDA EU, etc.

2. Product material standards: ISO, GB, ASTM, SAE, EN, DIN, BS, AMS, JIS, ASME, DMS, TOCT, GB

3. Main process: metal injection molding MIM, powder metallurgy PM, investment casting, die-casting aluminum

4. Available materials for powder metallurgy:

Copper alloys, iron bases, titanium alloys, stainless steel bases, aluminum alloys, nickel alloys, cobalt alloys, tungsten alloys, cemented carbides, hydroxy alloys, soft magnetic materials and 3D printing can be customized according to customer requirements.

Zhongwei Precision Parts of Metal Injection Molding MIM Glasses Accessories Show

Metal Injection Molding MIM Advantages

Unrestricted structure: complex metal parts can be directly formed like plastic injection molding, allowing free design of three-dimensional shapes. In theory, all shapes that can be formed by plastic can be realized by MIM process;

Reliable physical properties: the product has uniform structure and good density, the density can reach more than 98% of the theoretical density, and the mechanical properties such as product strength, hardness and elongation are high;

High product accuracy: the dimensional accuracy of the product can reach +/- 0.3% in one forming, and the products with general accuracy requirements do not need post-processing;

Significant batch cost advantage: The near-net-shape process, compared with other processes, especially for products with complex structures, has a significant cost advantage in mass production using the MIM process.

Comparison of metal injection molding MIM and various industries

Metal injection molding is suitable for stainless steel, iron-based alloys, magnetic materials, tungsten alloys, titanium alloys, cemented carbides, fine ceramics and other series. The prepared parts are widely used in aerospace industry, automobile industry, military industry, medical treatment, machinery industry, daily necessities and other fields. Then the comparison of metal injection molding and other molding process characteristics, which one has more advantages.

1. Comparison with traditional powder metallurgy process

As a near-net-shaping technology for manufacturing high-quality precision parts, metal injection molding has incomparable advantages over conventional powder metallurgy methods. MIM can manufacture many parts with complex shape features: such as various external grooves, external threads, tapered external surfaces, cross through holes, blind holes, recesses and key pins, stiffener plates, surface knurling, etc., with Parts with the above characteristics are not available by conventional powder metallurgy methods.

2. Compared with precision casting

Precision casting For metals or alloys with relatively low melting points, precision casting can also form parts with three-dimensional complex shapes. But for refractory metals and alloys, cemented carbides, cermets, ceramics, etc., it is powerless, which is determined by the essence of precision casting. In addition, it is very difficult or impossible to use precision casting for small-sized, thin-walled, high-volume parts.

3. Comparison with machining

Traditional machining methods have recently improved their processing capabilities by automation, and have made great progress in efficiency and accuracy, but the basic procedures are still inseparable from step-by-step processing (turning, planing, milling, grinding, drilling, polishing, etc. ) way to complete the shape of the part.

Finally, the machining accuracy of the machining method is much better than other machining methods, but because the effective utilization of materials is low, and the completion of its shape is limited by equipment and tools, some parts cannot be machined. In contrast, metal injection molding allows efficient use of materials with unlimited freedom of shape.

For the manufacture of precision parts with small and difficult shapes, the metal injection molding process has lower cost and higher efficiency than mechanical processing, and is highly competitive. MIM technology makes up for the technical deficiencies of traditional processing methods or the shortcomings of inability to make them, and does not compete with traditional processing methods. Metal injection molding technology can play its part in the field of parts that cannot be produced by traditional processing methods.

Our Service

Why Choose US?

Process After Sintering

1. Heat treatment: annealing, carbonization, tempering, quenching, normalizing, surface tempering

2. Processing equipment: CNC, WEDM, lathe, milling machine, drilling machine, grinder, etc.;

3. Surface treatment: anodizing, powder spraying, chrome plating, painting, sandblasting, nickel plating, galvanizing, blackening, polishing, bluing, etc.

Moulds and Inspection Fixtures

1. Mold service life: usually semi-permanent. (except for lost foam)

2. Mold delivery time: 10-25 days, (according to product structure and product size).

3. Tooling and mold maintenance: Zhongwei is responsible for precision parts.

Quality Control

1. Quality control: the defective rate is less than 0.1%.

2. Samples and trial run will be 100% inspected during production and before shipment, sample inspection for mass production according to ISDO standards or customer requirements.

3. Testing equipment: flaw detection, spectrum analyzer, golden image analyzer, three-coordinate measuring machine, hardness testing equipment, tensile testing machine.