7Cr7Mo3V2Si is a high strength and toughness cold work die steel. Compared with Cr12 type cold work die steel and W6Mo5Cr4V2 high-speed steel, it has higher strength and toughness. Better wear resistance.
7Cr7Mo3V2Si Chemical Composition
|C||Si||Mn(≤)||P (≤)||S (≤)||Cr||V||Mo|
The heating temperature is 1120-1140℃, the initial forging temperature is 1100-1200℃. The final forging temperature is ≥850℃. The cooling method after forging is sand cooling.
Heating temperature 8500℃±10℃, time 2-3h. Furnace cooling to temperature 740℃±10℃, time 4-6h. Slowly cooling to temperature ≤600℃, air cooling, hardness 210-240HBS.
Quenching temperature is 1100℃±10℃, after 25s/mm heating and heat preservation, oil cooling quenching.The first tempering temperature is 540℃±10℃, time is 2h, air cooling.The second tempering temperature is 540℃±10℃, the time is 1.5h, and the hardness is 59-62HRC.Quenching temperature 1100-1150℃, oil-cooling quenching. Tempering temperature 550-570℃, time 1-2h, tempering times 2-3 times. Hardness 58-60HRC.
7Cr7Mo3V2Si Steel Application
1. 7Cr7Mo3V2Si is a cold work mold steel. Such as cold extrusion die, blanking die, cold heading die, deep drawing film, bending die.
2. 7Cr7Mo3V2Si can also be used as plastic mold steel.
|Product type||Products||Dimension||Processes||Deliver Status|
|Plates / Sheets||Plates / Sheets||0.08-200mm(T)*W*L||Forging, hot rolling and cold rolling||Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting|
|Steel Bar||Round Bar, Flat Bar, Square Bar||Φ8-1200mm*L||Forging, hot rolling and cold rolling, Cast||Black, Rough Turning, Shot Blasting,|
|Coil / Strip||Steel Coil /Steel Strip||0.03-16.0x1200mm||Cold-Rolled & Hot-Rolled||Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting|
|Pipes / Tubes||Seamless Pipes/Tubes, Welded Pipes/Tubes||OD:6-219mm x WT:0.5-20.0mm||Hot extrusion, Cold Drawn, Welded||Annealed, Solution and Aging, Q+T, ACID-WASHED|