Sintered Gears

The sintered gear with higher strength can be made of copper-permeated sintered steel with a density of 90 ~ 95% theoretical value, low connectivity porosity, and smooth operation. Sintered gears with higher oil content are required to enhance self-lubrication and wear resistance.

The performance of the sintered gear is closely related to the powder metallurgy process, and the performance of the gear produced by different processes and technical routes is very different, and the development of powder metallurgy technology promotes the improvement of the performance of the sintered gear and the stability of the size. The technologies developed in recent years such as warm forming, high-speed forming, sintering hardening, high-temperature sintering, melting, and gear surface densification are expected to achieve high density, low cost, and high precision gear production at the same time.

 

Sintered gears vs machined

As an important part of the transmission system, the gear is generally made by mechanical processing. However, with the development of the automobile industry, the requirements for gear and other parts are getting higher and higher, and it is difficult to meet the requirements in terms of cost, delivery date, and noise; Powder metallurgy is a technology that can manufacture complex shaped parts, which can save material, energy, labor, high quality, suitable for mass production, and can meet the requirements of the automotive industry for parts.

Through the use of high-performance powder forming, sintering, and special post-processing, the powder metallurgy process has been able to produce gears with densities exceeding 7.5g/cm3. The use of these technologies has successfully replaced parts machined or machined by other methods. The success of the powder metallurgy process has made it possible for mechanical engineers to design high-performance and lower-cost parts. At present, the gear parts used in automobiles are synchronizer gear hubs, clutch gear hubs, and so on.

Materials

property

Copper impregnated steel Nickel steel Low alloy steel
13Cu-0.8C-Fe 2Ni-0.5C-1.5Cu-Fe 0.4Mn-0.5Ni-0.6Mo-0.5C-Fe
Since 871C quenching and tem Sintered Since 871C quenching and tem Sintered Since 871C quenching and tem Sintered
Ddensity (g/cm) 7.3 7.3 6.8 6.8 6.7 6.8
Ultimate tensile strength(kgf/mm) 80.5 59.5 66.5 36 78.4 35
Tensile yield strength, residual deformation 0.2%(kgf/mm) 74.9 40.5 56 28 72.1 29
Elongation(%) 0.5 3.0 0.8 1.5 0.6 1.0
Apparent hardness HRC 38 HRB89 HRC 24 HRB65 HRC 29 HRB60
Particle hardness HRC58 N/D HRC 40 N/D HRC 44 N/D
Impact strength (Charlton value, no notch)(kgf.m) 0.87 1.4 1.38 1.0 1.24 0.9

Stainless Steel Sintered Gears

Stainless steel gear
Sintering gears
Power tool gear
Power tool gear
Electric gear
Electric gear
Machine gear
Machine gear
automotive gears
Automotive gears
Copper bearing
Copper bearing
Can you sign our NDA before we provide sensitive project information?

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

Do you provide proofing services?

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

Why do I 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.

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

JH MIM lead time?

Typically, the lead time for processing and submitting samples is 30 days. However, according to the order quantity and special requirements of customers, we can extend or shorten the delivery cycle accordingly.

How to ensure quality?

1-year product warranty

World-class testing equipment

30+QC Workers

Key sizes 100% checking before shipment

ISO9001+IATF16949

What is the payment method for JH MIM orders?

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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