Application of vacuum quenching furnace on DC53

2026-03-18 09:07

Introduction to DC53 Tool Steel

DC53 is a high-carbon, high-chromium alloy tool steel renowned in the field of high-precision mold manufacturing. It is generally considered an improved and upgraded version of D2 (SKD11) steel, developed by Daido Steel of Japan. The biggest advantage of DC53 lies in its balance; it maintains high hardness while solving the problem of high brittleness.

DC53 tool steel

Applications of DC53 in Industry

DC53 is mainly used for stamping high-strength steel plates (automotive industry), forming stainless steel products (kitchenware and hardware), fastener processing (screws, bolts), and precision parts processed by wire cutting. To obtain products made from this material, vacuum air quenching of DC53 is an essential step.

Vacuum Air Quenching Process for DC53

The specific process flow is as follows:

1. First stage preheating: 500-600℃, 30-60 minutes
2. Second stage preheating: 800-850℃, 30-60 minutes
3. Austenitizing heating: 1020-1040℃, 20-30 minutes
4. Gas quenching cooling: 10 Bar, rapid cooling to 50-80℃.

Stainless steel kitchenware components formed using DC53 steel dies to ensure dimensional stability and wear resistance.

Technical Specifications of SIMUWU RVGQ-669 Furnace

The SIMUWU RVGQ-669 vacuum air quenching furnace achieves a temperature uniformity of ±5℃, ensuring uniform heating while enabling rapid gas quenching at a cooling gas pressure of 10 Bar. Furthermore, its process library covers heat treatment processes for various materials, including DC53, and allows for fully automated operation.The specific parameters are as follows:

Type	Horizontal, Circular single chamber, inner circulation
Charging	500kg (with jigs/fixture)
Ultimate vacuum	6.7×10-4 mbar
Pressure rising rate ( cold empty furnace condition）	≤0.67 pa/h
Vacuum pumping speed(cold and empty condition to 5 Pa)	≤ 30min
Maximum design temperature	1350℃
Working temperature	500 – 1300℃
Temperature rising rate (cold empty furnace to 1200℃)	≤60min
Temperature uniformity(vacuum、empty、1000℃、9 points temperature measuring)	±5℃
Uniform zone size (mm)	W600x H600x L900 mm
Cooling rate (Empty furnace from 1200℃ to 150℃)	≤ 6min
Temperature control method	Intelligent programmable temp controller
Control method	PLC Auto/Manu interlock protection control
Max charging pressure（absolute pressure）	<10 bar (absolute pressure – adjustable)