Vacuum Sintering Case Study: Tungsten Carbide & Chromium Carbide Powder

Project Overview
We conducted vacuum sintering test for WC (Tungsten Carbide) and CrsC2 (Chromium Carbide) hard-phase powders inside our
vacuum sintering furnace. Strict temperature ramping, holding and cooling procedures were implemented to explore optimal sintering parameters for cemented carbide, wear-resistant coating raw materials.

Test Materials
1. WC Powder: 168g, particle size 15-45 um
2. Cr3C2 Powder: 74g, particle size 15-45 um
Materials were accurately weighed and loaded into graphite crucibles before being placed in the hot-zone chamber.

Sintering Process Parameters
· Atmosphere: Vacuum environment throughout the whole cycle
· Heating rate: 3°C/min; Cooling rate: -3°C/min

Temperature profile:
1.RT-200°C|Hold
2.200°C360°C|Hold1

3.360°C一500°C|Hold 2
4. 500°C - 1270°C | High-temperature holding stage for sintering
5. Controlled cool-down from 1270°C to 800°C, followed by furnace cooling

Equipment Highlight
Our vacuum sintering furnace adopts full-graphite heating chamber, precise PID multi-segment temperature control, stable vacuum maintaining, to deliver repeatable heat treatment results for carbide powder, hard alloy, cermet research & small-batch production.

Application Value
This test provides reference process data for wear-resistant parts, thermal-spray powder, hard-alloy material development. We support custom test schemes according customers powder composition, particle size and target sintering requirements.

Contact us for your material sintering trials.