High-speed steel plate and production method thereof
A production method and high-speed steel technology, applied in the field of metallurgy, can solve the problems of serious trade deficit, difficult to break through in quality, and difficult for domestic die-casting enterprises to achieve good processing performance, ensure the performance of steel plates, and optimize the effect of heat treatment process.
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[0024] Example 1
[0025] The thickness of the 145V33 high-speed steel plate in this embodiment is 12 mm, and its chemical composition and mass percentage are shown in Table 1.
[0026] The production method of the 145V33 high-speed steel plate in this embodiment includes rolling and heat treatment processes. The specific process steps are as follows:
[0027] (1) Rolling process: using hot rolling production, the start-rolling temperature is 980°C, the final rolling temperature is 850°C, without watering after rolling;
[0028] (2) Heat treatment process: heat treatment by quenching + tempering method. The quenching process is preheating at 800°C and holding for 30min, then heating to quenching temperature of 1120°C, holding time of 1.2min / mm and oil cooling within 5min; The tempering process is: the steel plate is tempered 1h after quenching, the tempering temperature is 180℃, and the holding time is 3min / mm; the quenching medium of the steel plate is a mixture of water and kerosene...
Example Embodiment
[0030] Example 2
[0031] The thickness of the 145V33 high-speed steel plate in this embodiment is 18 mm, and its chemical composition and mass percentage are shown in Table 1.
[0032] The production method of the 145V33 high-speed steel plate in this embodiment includes rolling and heat treatment processes. The specific process steps are as follows:
[0033] (1) Rolling process: using hot rolling production, the start-rolling temperature is 1010°C, the final rolling temperature is 870°C, no watering after rolling;
[0034] (2) Heat treatment process: heat treatment by quenching + tempering. The quenching process is preheating at 820°C and holding for 39 minutes, then heating to quenching temperature of 1160°C, holding time of 1.3 min / mm and oil cooling within 7 minutes; The tempering process is that the steel plate is tempered 2h after quenching, the tempering temperature is 200℃, and the holding time is 3.5min / mm; the quenching medium of the steel plate is a mixture of water and ke...
Example Embodiment
[0036] Example 3
[0037] The thickness of the 145V33 high-speed steel plate in this embodiment is 21 mm, and its chemical composition and mass percentage are shown in Table 1.
[0038] The production method of the 145V33 high-speed steel plate in this embodiment includes rolling and heat treatment processes. The specific process steps are as follows:
[0039] (1) Rolling process: using hot rolling production, the start rolling temperature is 1020°C, the final rolling temperature is 880°C, and no water is applied after rolling;
[0040] (2) Heat treatment process: heat treatment by quenching + tempering. The quenching process is preheating at 830°C and holding for 42min, then heating to quenching temperature of 1180°C, holding time of 1.45min / mm and oil cooling within 9min; The tempering process is that the steel plate is tempered 3h after quenching, the tempering temperature is 200℃, and the holding time is 3.8 min / mm; the quenching medium of the steel plate is a mixture of water and...
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