MIM Supplier

Metal Injection Molding FAQ MIM Process

1. What is MIM technology?

MIM (Metal Injection Molding) is a manufacturing technology that combines the shape making complexity of Plastic Injection Molding with the material flexibility of Powder Metallurgy.

2. Is the metal melted during the molding process?

No, only the binders are melted allowing the powders to flow like a plastic material. Upon cooling the binders solidify giving the part strength for handling. The part must be subsequently sintered to high density to achieve the required mechanical properties.

3. How does MIM differ from the Traditional PM process?

Traditional PM uses high, uniaxially applied pressure to coarse metal powders in a die set to produce moderately complex components. Typically, no further densification is gained during the sintering process. Densities achieved by this method are typically in the range of 80-90% of theoretical which limit the physical properties that can be achieved for the given alloy. MIM products are not limited in shape complexity due to the flexibility of the injection molding process. The fine metal powders used – combine with higher sintering temperatures to allow MIM to achieve near full density in the final article. This allows MIM products to have similar properties as wrought materials.

4. Does the part shrink during removal of binders?

No, the part will not change size in the debinding phase of the process. However, since sintering achieves near full density of the powders, the part will undergo a size change of up to 20%.

5.What is the metal injection molding MIM tolerances?

Typical MIM tolerances range from ± 0.3% to 0.5% of the dimension. However, tolerances are highly dependent upon product geometry. Tolerances beyond what MIM is capable of are achieved by post machining operations. Indo-MIM will help you with this analysis and can provide a full range of in-house machining options to supply a product that meets you requirements.

6.What will be the density and strength of the MIM parts?

Typical MIM densities achieved are ≤ 96% of theoretical. Properties vary depending upon the alloy chosen however they will be similar to wrought material.

7.Why should I use MIM?

MIM excels in producing small, highly complex parts that are difficult or cost prohibitive to produce with conventional technologies such as machining or casting.

Can MIM parts be heat treated or electroplated?

Yes, MIM parts can be, blackened, galvanized, chromed and PVD.

About project cooperation

About JH MIM?

JH MIM, which started as MIM, has established a sound product ecology by investing in advantageous enterprises in related industries. Now it can provide customers with one-stop services such as PM, Die Casting, CNC, and 3D printing. It is equipped with integrated assembly capabilities and the quality of quality suppliers mentioned above. Please click the link below for more detailed information.

Can you sign our NDA before we provide sensitive project information?

Yes, this is a routine operation for most companies before inquiring.

Why do the customers need to provide 2D (PDF) and 3D (STEP) drawings during inquiry?

3D drawings allow engineers to better understand the structure of the product, and 2D documents can provide more information, including materials, tolerances, surface treatment, etc. More detailed information is conducive to more accurate quotation by engineers.

Do JH MIM provide samples?

We have metal 3D printing equipment and can provide sample 3D printing.

How can we guarantee quality?
  1. 1-year product warranty
  2. World-class testing equipment
  3. 30+QC Workers
  4. Key sizes 100% checking before shipment
  5. ISO9001+IATF16949
Do JH MIM provide proofing services?

We have metal 3D printing equipment and can provide sample 3D printing.

How long does it take to get a quote after sending an inquiry?

In the case of detailed inquiry drawings and information, it usually only takes 2-3 days for us to give you a detailed quotation, including the product price and mold price.

What preparations need to be made before confirming production?

After confirming the order, we usually take 5-7 days to prepare the DFM report of the product. After confirmation, we spend 25 days to complete the mold and provide T1 samples to customers for testing in the following 10-15 days.

If there is a problem with the test, we will re-sample it for free based on the feedback and provide a suitable sample.

What is the MOQ?

MIM products MOQ 2000 PCS,

CNC products MOQ 2000 PCS,

Alu die casting,  MOQ 2000 PCS

PM product MOQ 5000 PCS

What is the terms of payment?

Usually, T/T is used as the payment method

Mold: 50% deposit, 50% payment after confirming the sample.

Bulk production: 30% deposit, 30% see bill of lading Copy, pay 70% balance.

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