|
Component％ |
C碳 |
Cr铬 |
Mn锰 |
Mo钼 |
Mn锰 |
Si硅 |
|
0.40 |
5.00 |
0.40 |
1.10 |
1.30 |
1.00 |
Calibration of leaving factory: Back fire; the hardness can reach to 235HB at most.
Characteristic: This steel is resistant to wear in high temperature, high in strength, easy to cut and polish.
Uses: It is adapted for any heat process, such as die-casting mould, heat alloy or metal extrusion mould, nozzle, canister, heat scissors, plastic mould, screw mould and so on.
Forging: Forge it from 1100℃ to 900℃ and then back to furnace to cool it slowly.
Anneal: Preserve in 750℃-800℃ and then cool in furnace. The hardness can reach to 235HB at most.
Stress relief: Preserve for 1-2h in 600-650℃ and then cool it slowly.
Quenching: Cool to 1020-1080℃ in oil or in air; then reduce to 60-80℃ and back fire immediately.
Backfire: The first backfire is finished in 500℃ for getting secondary induration and getting the highest hardness; while the second is more than 500℃ for getting needed hardness; and the third backfire is a little lower than that of the second one. (about 30℃)
Specification: round (MM)
130.0 150.0 20.5 25.5 30.8 35.8 40.8 45.8 50.8 55.8 60. 866.0
71.0 76.0 81.0 86.0 91.0 96.0 101.5 106.5 116.5 121.5 126.5
131.5 141.5 151.5 162.0 182.0 202.0 222.0 232.0 242.0 252.5 272.5 321.5 358.0
Flat (MM)
150X25-28-32-35-43-54-65-80
155X25-32-43
165X25-28-32-35-43-54-65-80
180X25-28-32-35-43-54-65-80
205X25-28-32-35-43-54-65-80-90-105
255X25-28-32-35-43-54-65-80-90-105
305X25-28-32-43-54-65-80-90-105-130
410X105-130-155
510X210-260
610X130-155-210 |
