Heat treatment technology for die Cr12MoV steel
A technology of die steel and steel, which is applied in the field of heat treatment process of die Cr12MoV steel, can solve problems such as easy collapse, and achieve the effect of improving the life of the die
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[0027] Example 1:
[0028] A heat treatment process for mold Cr12MoV steel, its main chemical components are: C: 1.45-1.70; Si: ≤ 0.40; Mn: ≤ 0.40; S: ≤ 0.03; P: ≤ 0.03; Cr: 11-12.5; Ni : ≤0.25; Cu: ≤0.30; V: 0.15~0.30; Mo: 0.40~0.60. The specific process steps of heat treatment are as follows:
[0029] A. First, put this die steel into a box furnace for heating, heat to 865°C, and keep the temperature in the box furnace for 2.5 hours.
[0030] B. Cool to 460°C in the box furnace, take out the die steel from the box furnace, cool it in air, put it into the box furnace, heat it to 1015°C, and keep the temperature for 2.5 hours.
[0031] C. Cool to 925°C in a box furnace, and keep the temperature for 1.5 hours.
[0032] D. Take out the die steel from the box furnace and put it into the quenching oil of 40-70°C for cooling.
[0033] E. Put the mold steel cooled in the oil into the box furnace, heat it to 275 ° C, keep the temperature for 6.5 hours, cool it to 100 ° C in the bo...
Example Embodiment
[0034] Embodiment 2:
[0035] A heat treatment process for mold Cr12MoV steel, its main chemical components are: C: 1.45-1.70; Si: ≤ 0.40; Mn: ≤ 0.40; S: ≤ 0.03; P: ≤ 0.03; Cr: 11-12.5; Ni : ≤0.25; Cu: ≤0.30; V: 0.15~0.30; Mo: 0.40~0.60. The specific process steps of heat treatment are as follows:
[0036] A. First, put this die steel into a box furnace for heating, be heated to 870 ° C, and keep the temperature in the box furnace for 3.5 hours.
[0037] B. Cool to 460°C in a box furnace, take out the die steel from the box furnace, cool it in air, put it into the box furnace, heat it to 1025°C, and keep the temperature for 3.5 hours.
[0038] C. Cool to 930°C in a box furnace, and keep the temperature for 1.7 hours.
[0039] D. Take out the die steel from the box furnace and put it into the quenching oil of 40-70°C for cooling.
[0040] E. Put the mold steel cooled in the oil into the box furnace again, heat it to 285 ° C, keep the temperature for 7 hours, cool it to 100 °...
Example Embodiment
[0041] Embodiment three:
[0042] A heat treatment process for mold Cr12MoV steel, its main chemical components are: C: 1.45-1.70; Si: ≤ 0.40; Mn: ≤ 0.40; S: ≤ 0.03; P: ≤ 0.03; Cr: 11-12.5; Ni : ≤0.25; Cu: ≤0.30; V: 0.15~0.30; Mo: 0.40~0.60. The specific process steps of heat treatment are as follows:
[0043] A. First, put this die steel into a box furnace for heating, heat to 875°C, and keep the temperature in the box furnace for 4.5 hours.
[0044] B. Cool down to 460°C in the box furnace, take out the die steel from the box furnace, carry out air cooling, then put it into the box furnace, heat to 1035°C, and keep the temperature for 4.5 hours.
[0045] C. Cool to 935°C in a box furnace, and keep the temperature for 2 hours.
[0046] D. Take out the die steel from the box furnace and put it into the quenching oil of 40-70°C for cooling.
[0047] E. Put the mold steel cooled in the oil into the box furnace, heat it to 295 ° C, keep the temperature for 7.5 hours, cool it t...
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