Contrast for MIM and Traditional Process

  Metal injection molding(MIM) is a kind of "near net shape manufacturing process", used to produce MIM parts and CIM parts. It is a blend of two kinds of traditional process (plastic injection molding and powder metallurgy).

Contrast for MIM and Traditional Process
Item	Metal Injection Mold(MIM）	PM	Precision Casting	Machining Operation	Stamping
Density	98%	86%	98%	100%	100%
Tensile  Strength	High	Low	High	High	High
Surface Finish	High	Medium	Medium	High	High
Small size	High	Medium	Low	Medium	High
Thickness	High	Medium	Medium	Low	High
Complexity Level	High	Low	Medium	High	Low
Design Tolerance	High	Medium	Medium	Medium	Low
Capacity	High	High	Medium	Medium-High	High

Compared with metal injection molding and other molding technology

MIM(metal injection molding) is a small or no cutting process(also called near net-shape). Compared with traditional casting technology, the advantages of MIM as following:

1.    High surface smoothness, newest data from ZCMIM is surface R1.6 at lowest 

2.    Small tolerance and high precision dimension. Current domestic metal injection molding manufacture ZCMIM can do tolerance within 0.03mm~0.05mm. Some items can do with lower tolerance after post treatment.

3.    It is possible to prepare alloy materials and composite materials

4.    Good stability(no stand hole and shrink hole) and reliable mechanics performance

5.    Low energy consumption

The advantages of PM（powder metallurgy）

PM（powder metallurgy） has important position in metal parts manufacturing,and powder metallurgy has obvious advantages for products molding. Let's follow ZCMIM to know the advantages of PM（powder metallurgy）！

1、PM（powder metallurgy）is a small or no cutting process(Near purification molding);

2、PM（powder metallurgy）is suitable for produce the same components in mass production;

3、PM（powder metallurgy）can manufacture the complicated components in small tolerance(such as gears, cam wheel and versatile components);

4、PM（powder metallurgy）no need or can shorten the precision processing of machine

5、PM（powder metallurgy can save the energy and material;

6、PM（powder metallurgy）can produce self-lubricating components.

ZCMIM talk about powder metallurgy powder quality control from MIM products

From powder metallurgy products to talk about metal powder quality control mainly can be divided into two aspects, namely, perfecting the evaluation system of the powder and attentively listen to customers needs.

1.        perfecting the evaluation system of the powder

Mixer - > granulation - > feedstock rheological properties - > feedstock torque - > injection molding - >sintering->product  performance - >  microstructure

2.        attentively listen to customers needs

Ø  recommend suitable MIM material

Ø  provide t MIM technology support

Ø   make performance analysis

Ø  offer MIM marketing information support

ZCMIM is not a manufacturer of metal powder, just hope that through above introduction of metal powder quality control to let more people be familiar with metal powder metallurgy technology, achieving a deeper understanding of metal powder metallurgy process.

Characters for powder metallurgy technology（Second）

Following last article about analysis characters for powder metallurgy technology, other characters as following (reference from ZCMIM): 

Powder metallurgy can not melt the materials and mix any impurity in the course of production, and metal components are sintered in vacuum condition. It unable bring any pollution, so it can prepare high-purity materials with powder metallurgy process.

It can ensure correctness and uniformity of material matching for powder metallurgy.

Powder metallurgy is suitable for produce the same components in mass production, especially for machining gears of high cost, it can reduce the production cost greatly.

Metal injection molding gears

  Metal injection molding products have advantage with high density, high precision, and can be mass production. At present, metal injection molding products are applied in industry, automobile and motorcycle industries, the most widely used products is the metalinjection molding gears.

    As part Structural parts, gears is most used parts of all types. The gear Using metal injection molding in the production have higher accuracy and density, and also can be mass production and processing  

    ZCMIM have 8 years experience of metal injection molding technology, is committed to providing the most durable of metal injection molding gear for customers.

The product development processes of MIM

MIM（metal injection molding）technology is more and more widely used in the manufacture of the metal parts, do you know the process of MIM product development? ZCMIM tell you, there are Seven production process of the product development, Customer needs assessment; Mold development plan; Mold processing; Mold test; Sample make; Trial production; Mass production, let's follow ZCMIM to know the specific work content of each process

1.Customer needs assessment

•       Study of the drawings

•       Study of the product requirements

•       Other requirements and information

2. Mold development plan

•       Time for a day

•       Mould design

•       Product defect analysis

•       Risk analysis

•       Mould schedule

•       Customer confirmation

3. Mold processing and manufacturing

•       Time for 15 days

•       Mould manufacturing agreement with outsourcing mould manufacturers

•       Follow up tooling in progress, and quality

4. Mold test

•       Test time for 3 days

•       Check the pattern

•       computer test

•       check injection molded parts, density, weight, appearance.

5. Sample test

•       Injection molding,

•       Check the appearance, density, weight.

•       skim

•       check the degreasing rate

•       sintering

•       pure plastic

•       QC inspection and deliver (sign) sample.

6. Trial production,

•       Try products order production

•       Trial production, according to the sample production process

•       Trial-produce review

•       Pilot run smoothly,

7. Mass production,

•       Turn production evaluation

•       Turn production