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.

Inactive Publication Date: 2019-11-22
WUYANG IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its international reputation is still at the bottom. Even though the output is increasing, most of the die-casting molds are only for domestic demand, especially the contradiction between process cost and performance is gradually deepening.
Due to technical constrai

Method used

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  • High-speed steel plate and production method thereof
  • High-speed steel plate and production method thereof
  • High-speed steel plate and production method thereof

Examples

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Example Embodiment

[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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Abstract

The invention discloses a high-speed steel plate and a production method thereof. The steel plate comprises the following chemical components of, in percentage by mass, 1.4%-1.6% of C, 0.35%-0.55% ofSi, less than or equal to 0.025% of P, less than or equal to 0.025% of S, 0.3%-1.0% of Mn, 3.1%-3.5% of V, 0.020%-0.035% of N, and the balance Fe and inevitable impurities. The production method comprises rolling and heat treatment procedures. According to the high speed steel plate, C-V-N high-alloy element composite strengthening is adopted, the performance of the steel plate is ensured and theimpact toughness is improved through an optimized heat treatment process, good strong toughness matching is obtained, and the high-speed steel plate can replace 60 MnSiCr4 and 90MnCrV 8; and the high-speed steel plate is good in mechanical property and processing performance, excellent in die casting performance and capable of meeting the requirements of high-hardness large-scale dies for die-casting dies, supporting tools and die frames.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a high-speed steel plate and a production method thereof. Background technique [0002] my country's alloy tool and mold industry has developed rapidly, and its total output has increased significantly. The total output of domestic molds is second only to the United States, and has leapt to the second place in the world, becoming a veritable mold powerhouse. Such achievements are mainly due to the fact that our country has a very obvious price-to-performance ratio in the international die-casting trade market by virtue of its uniquely endowed broad market and relatively low-cost resources and labor advantages. According to the situation, the future of my country's die-casting industry will The development prospect is very broad. [0003] Although my country's tool steel has made a major breakthrough. However, its international reputation is still at the bottom. Ev...

Claims

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Application Information

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IPC IPC(8): C22C38/12C22C38/04C22C38/02C21D8/02C21D1/18
CPCC21D1/18C21D8/0205C21D8/0247C21D2211/005C21D2211/008C22C38/001C22C38/02C22C38/04C22C38/12
Inventor 邓建军刘丹李杰龙杰袁平付振坡付冬阳赵晓辉师帅
Owner WUYANG IRON & STEEL
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