Golf Head Injection Molded Parts

Metal Injection Molding is a molding method in which a speed-increasing mixture of metal powder and a certain binder is injected into a model. It is a technology that combines traditional powder metallurgy technology with modern plastic injection molding technology. Qinhuangdao Zhongwei Precision Machinery Co., Ltd. is a comprehensive company integrating R&D, production and sales of copper alloy, iron base, stainless steel base, aluminum alloy, nickel alloy, cobalt alloy, tungsten alloy, cemented carbide and powder metallurgy structural parts. high-tech enterprises. We are willing to cooperate with every businessman who needs Golf Head Injection Molded Parts.

Product Description

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 processes: metal injection molding MIM, powder metallurgy PM, investment casting, die-casting aluminum,

4. Available materials for powder metallurgy:

Copper alloy, iron base, titanium alloy, stainless steel base, aluminum alloy, nickel alloy, cobalt alloy, tungsten alloy, cemented carbide, hydroxy alloy, soft magnetic material and 3D printing can be customized according to customer requirements.

Production Process and Application

1. Overview of MIM

MIM (Metal Injection Molding) is the abbreviation of Metal Injection Molding. It is a molding method in which a plasticized mixture of metal powder and its binder is injected into a mold. It is firstly mixing the selected powder with a binder, then granulating the mixture and then injection molding the desired shape.

The MIM process combines the design flexibility of injection molding with the strength and integrity of precision metals to achieve low-cost solutions for extremely complex geometry parts. The MIM process is divided into four unique processing steps (mixing, molding, debinding and sintering) to achieve the production of parts, with the need for surface treatment depending on the product characteristics.

2. Summary of metal injection molding (MIM) production process and application

The MIM manufacturing process generally includes: mixing and granulation, injection molding, degreasing, sintering, and secondary processing.

(1) Main technical features of MIM process:

①Suitable for the forming of various powder materials, the product is widely used;

②High utilization rate of raw materials and high degree of production automation, suitable for continuous mass production.

③ It can directly form small parts with complex geometric shapes (0.03g ~ 200g);

④The parts have high dimensional accuracy (±0.1%～±0.5%) and good surface finish (roughness 1～5μm);

⑤The product has high relative density (95-100%), uniform organization and excellent performance;

(2) Several commonly used surface treatment processes for MIM parts

Polishing treatment: the use of mechanical, chemical or electrochemical action to reduce the surface roughness of the workpiece to obtain a bright and smooth surface.

Electroplating: The process of attaching a metal film to the surface of a metal or other material by electrolysis. Electroplating can prevent metal oxidation (such as rust), improve wear resistance, electrical conductivity, reflectivity, corrosion resistance (copper sulfate, etc.) and enhance aesthetics.

PVD processing: The process of transferring atoms or molecules from the source to the surface of the substrate using physical processes to achieve material transfer. Its function is to spray some particles with special properties (high strength, wear resistance, heat dissipation, corrosion resistance, etc.) on the matrix with lower performance, so that the matrix has better performance.

Blackening treatment: to produce an oxide film on the metal surface to isolate the air and achieve the purpose of rust prevention. It is a very common chemical treatment method. When the appearance requirements are not high, blackening treatment can be used. The main components of the blackening liquid are sodium hydroxide and sodium nitrite.

Phosphating: It is a process of chemical and electrochemical reaction to form a phosphate film. The main purpose of phosphating is to:

1) Provide protection to the base metal and prevent the metal from being corroded to a certain extent;

2) It is used as a primer before painting to improve the adhesion and anti-corrosion ability of the paint film.

Spraying treatment: The coating method is to disperse into uniform and fine droplets by means of pressure or centrifugal force through a spray gun or disc atomizer, and apply it to the surface of the object to be coated.

In summary:

1) Polishing and phosphating are mainly pretreatments to prepare for other post-treatments;

2) Electroplating and PVD are two types of processing technologies that are widely used;

3) Blackening and spraying will greatly change the surface of the product, which is more suitable for large workpieces.

(3) Applicable materials and application fields:

The application of MIM is extremely wide, including daily necessities, such as automobiles, aerospace industry, military industry, mobile phones, watches, medical treatment, household appliances, cameras and power tools equipped with MIM parts. MIM technology can be applied to any material that can be made into powder. The currently used MIM material systems mainly include: stainless steel, iron-based alloys, magnetic materials, tungsten alloys, cemented carbides, fine ceramics and other series.

3. From the analysis of the process essence of MIM, it is currently the most suitable process for mass production of high melting point materials, high strength and complex shape parts. Its advantages can be summarized as follows:

(1) MIM can form various metal material parts with complex three-dimensional shapes (as long as this material can be made into fine powder). The density and performance of each part of the part are consistent, that is, isotropic. Provides a greater degree of freedom for part design.

(2) MIM can maximize the production of parts close to the final shape, with high dimensional accuracy.

(3) Even in solid phase sintering, the relative density of MIM products can reach more than 95%, and its performance is comparable to that of forging materials. Especially the dynamic performance is excellent.

(4) The price of powder metallurgy (PM) automatic molding machine is several times higher than that of injection molding machine. MIM can easily use a multi-cavity mold with high molding efficiency, long service life of the mold, and convenient and quick replacement and adjustment of the mold.

(5) The injection material can be used repeatedly, and the material utilization rate is over 98%.

(6) The product turns quickly. High production flexibility and short time from design to production for new products.

(7) MIM is especially suitable for mass production and has good product performance consistency. If the parts produced are selected properly and the quantity is large, higher economic benefits can be achieved.

(8) MIM has a wide range of materials and wide application fields. Golf Head Injection Molded Parts can be used for injection molding of a wide range of materials, such as carbon steel, alloy steel, tool steel, refractory alloys, cemented carbide, high specific gravity alloys, etc.

4. MIM equipment

According to the processing process of MIM, the equipment involved in MIM includes a mixing and granulating machine, a special injection molding machine for MIM, a degreasing furnace, a sintering furnace, and various testing and secondary processing equipment.

Post Casting Process

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: 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.

Application of MIM Software

(1) Automotive parts: parts for airbags, parts for car locks, parts for seat belts, car door lift systems, pinions, small parts for automotive air conditioning systems, racks in brake systems, etc., sensors in fuel supply systems small parts in;

(2) Military parts: gun parts, ammunition parts, fuze parts;

(3) Computer and IT industries: such as mobile phone card trays, mobile phone structural parts, printer parts, magnetic cores, striker pins, drive parts, optical communication ceramic plugs;

(4) Tools: such as drill bits, cutter heads, nozzles, spiral milling cutters, pneumatic tools, parts for fishing gear, etc.;

(5) Household appliances: such as watch cases, watch chains, electric toothbrushes, scissors, golf heads, jewelry links, cutting tool heads and other parts;

(6) Parts for medical machinery: such as orthodontic frame, scissors, tweezers;

(7) Electrical parts: micro motors, sensor devices;

(8) Mechanical parts: such as textile machines, crimping machines, office machinery parts, etc.