Brief introduction of sintering process of iron-copper-based MIM parts

The influence of sintering process parameters on the performance of iron-based parts Sintering process parameters: sintering temperature, sintering time, heating and cooling speed, sintering atmosphere, etc.

1. Sintering temperature

The selection of the sintering temperature of iron-based products is mainly based on the product composition (carbon content, alloy elements), performance requirements (mechanical properties) and uses (structural parts, anti-friction parts), etc.

2. Sintering time

The choice of sintering time for iron-based products is mainly based on product composition (carbon content, alloy elements), unit weight, geometric size, wall thickness, density, furnace loading method, etc.;

The sintering time is related to the sintering temperature;

The general sintering time is 1.5-3h.

In continuous furnace, holding time:

t = L/l ▪n

t — Holding time (min)

L— length of sintered belt (cm)

l — Length of burning boat or graphite board (cm)

n — boat pushing interval (min/boat)

3. Heating and cooling rate

The heating rate affects the volatilization speed of lubricants, etc.;

The cooling rate affects the microstructure and performance of the product.