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MIM

MIM as a manufacturing quality precision components near net shape technology, and the processing methods compared with conventional superiority. MIM can create many of the complex shape of the parts : such as external cutting shafts, the thread, taper, surface, cross-boundary Kong, blind Kong, Taiwan and four key sales, strengthen tendons boards, and so on the surface roll-with the above characteristics are not parts with conventional powder metallurgy methods. Since the adoption of MIM almost no longer manufactured parts for machines processing, reduce material consumption, resulting in the production of complex shape parts for more than a certain number of values, MIM will be more economical than aircraft processing methods.

Factory

MIM Process

Metal Powder Injection Molding (MIM) is a cost-effective and efficient manufacturing process. It involves mixing metal powders with a binder, shaping them using an injection molding machine, and then debinding, sintering, and post-processing the components to create high-quality metal parts. MIM offers improved production efficiency and reduced costs.

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Comparision of MIM to investment casting

Parameters

Investment casting

MIM

Minimum aperture diameter

2mm

0.4mm

Maximum depth of aperture¢ 2mm

2mm

20mm

Minimum wall thickness

2mm

<1mm

Maximum wall thickness

unlimited

10mm

¢ 4mm tolerance

±0.2mm

±0.06mm

Surface finish(Ra)

5μm

1μm



Powder injection shape advantages :

Like the production of plastic products, a true production complex shape metal, ceramic, and other parts components products of low-cost, good smoothness and high accuracy (+0.3%~+0.1%), the general follow-up processing products without strength, hardness, extension rate Mechanics high-performance, good resistance to abrasion and fatigue resistance, the organization distributed high utilization of raw materials, production of a high degree of automation, processes simple, clean continuous mass production, the production process for clean production processes

 

MIM Material

Material

Composition

Low alloy steel

Fe-2Ni, Fe-8Ni

Stainless steel

316L, 17-4-PH

Tool steel

42CrMo4, M2

Carbide

WC-Co(6%)

Ceramics

Al203, ZrO2, SiO2

Tungsten alloy

W-Ni-Fe, W-Ni-Cu, W-Cu


Powder injection shape Newer material system MIM applications

Applications

Materials

Request

Structural pieces

High-intensity steel

Intensity "2Gpa

Medical / dental

TL Tl-6Al-4V

Biological compatibility

Magnetic material

Fe, Fe14Nd2b, SmCo5

Magnetic

Audio devices

PZT ceramlcs

Frequency response

Wear-resisting pieces

ZrO2. WC-Co

Hardness, resilience

High temperature structures pieces

Ni3Al NiAl TiAl

- Oxide

Processing machines

Al203.SiC,Al203-ZrO2

Intensity

Withstand high temperatures Sports

W.Mo,MOSi2

Heat

Aviation flights were

Super alloys

Fatigue period



MIM system commonly used materials

Aerospace industry

rocket nozzle

Automobile

Turbo system, Valve braking stystem

Electronics

disk driver , cable connector, printer caps, , computer , electric package

Army force

land mine rotor , gun trigger

Medical instrument

surgical scissor, knife, forceps , biopsy tools

Home products

watch , golf

Hardware machinery

Hand tools , gears, ratchets, knobs , cutting tools



Basic Mechanical Properties of MIM materials

MIM material

Density 103kg/m3

Hardness

Tensile strength

Curve stength

Elongation%

Iron-based alloy

MIM4600

7.68

85HRB

400


25

MIM4650

7.68

100HRB

600


15

Stainless steel

316L

7.94

52HRB

580


45

Tungsten alloy

95%W

18.1

HRC31

930


10

97%W

18.5

HRC33

890


6

Carbide alloy

YG8X

14.9

HRA90


2300




Powder injection technology developed technology compared with other emerging technologie   

The quest for industrialization and automation has seen the development of various manufacturing technologies. While traditional methods like machining, stamping, forging, casting and powder metallurgy remain important, MIM is fast becoming an integral process in metal forming. 


PARAMETERS

MIM

POWDER
METALLURGY

CASTING

MACHINING

STAMPING

Density

98%

86%

98%

100%

100%

Tenside Strength

High

Low

High

High

High

Surface Finish

High

Medium

Medium

High

High

Miniaturization

High

Medium

Low

Medium

High

Thin Wall Capability

High

Medium

Medium

Low

High

Complexity

High

Low

Medium

High

Low

Design FlexibilityHighMediumMediumMediumLow
Production QuantityHighHighMediumMed-HighHigh
Range of MaterialsHighHighMed-HighHighMedium
AffordabilityHighHighMediumLowHigh


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