Intermediate-carbon high-speed cutting saw blade matrix steel and production method thereof

A manufacturing method and high-speed technology, applied in the direction of manufacturing tools, heat treatment process control, heat treatment equipment, etc., can solve the problems of plasticity, toughness, low weldability, and inability to be widely used, and achieve high thermal stability and stable product performance Good, high strength and toughness effect

Inactive Publication Date: 2012-02-08
WUHAN IRON & STEEL (GROUP) CORP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

This steel has a high yield strength, which can reach 1255-1710Mpa, but due to the high carbon content in its comp

Method used

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Embodiment Construction

[0020] The medium-carbon high-speed cutting saw blade base steel and its manufacturing method of the present invention will be further described in detail below in conjunction with several specific examples.

[0021] Embodiments 1 to 7 in Table 1 are the components and weight percentages of the steel of the present invention. In addition, three groups of patent No. 99107945.0 diamond saw blade substrate steels were selected as comparison steels. The components of these steels are shown in the table 1 shows:

[0022] Table 1: Chemical composition weight percentage (%) of the steel of the present invention and the comparison steel.

[0023] Component

[0024]The manufacturing method of the medium-carbon high-speed cutting saw blade base steel of the present invention comprises molten iron desulfurization, converter smelting, vacuum treatment, continuous casting, billet stack cooling for 48 hours, and then adopts a 2250mm hot rolling unit to carry out hot continuous ro...

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Abstract

The invention discloses an intermediate-carbon high-speed cutting saw blade matrix steel and a production method thereof. The steel comprises the following components in percentage by weight: 0.20-0.40% of C, 0.10-0.30% of Si, 0.45-0.63% of Mn, not more than 0.010% of P, not more than 0.005% of S, 0.008-0.020% of Ti, 0.80-1.20% of Cr, not more than 0.005% of N, 0.020-0.050% of Al, 0.10-0.20% of Ni, 0.030-0.050% of V and the balance of Fe and inevitable impurities, wherein Als/N is not less than 30%, Mn +Cr is 1.45-1.85. The production method comprises the following steps of: desulfurizing molten iron, smelting in a converter, carrying out vacuum treatment, casting continuously, hot-rolling continuously, cooling, coiling, leveling, quenching and tempering. Facts prove that the steel has pure steel quality, strong toughness, high wearing resistance and low cost at the same time. The production method of the steel is simple in process and stable in product property.

Description

technical field [0001] The invention belongs to the technical field of steel preparation, and specifically refers to a medium-carbon high-speed cutting saw blade base steel and a manufacturing method thereof. Background technique [0002] Saw blade base steel is the main raw material for the manufacture of saw blade bases for cutting stone, and is mainly used in the stone processing industry. According to the classification of materials, the commonly used materials for the base of stone cutting saw blades produced in China mainly include 75Crl, 8MnSi, 80CrV, 65Mn, 45 steel and other materials, 45 steel is ordinary carbon steel, and 65Mn is ordinary spring steel. The fire performance is relatively poor. 75Crl, 8MnSi, and 80CrV steel contain alloy elements such as Cr and V. The quality of the saw blade is greatly improved compared with 65Mn. However, because it is a high-carbon, high-strength steel, it is produced by continuous casting and hot rolling. , there is considerable...

Claims

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Application Information

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IPC IPC(8): C22C38/50C21D8/02C21D1/18C21D11/00
Inventor 董中波徐进桥郑琳郭斌邹德辉刘文斌张开广童明伟骆海贺丁庆丰王宪军洪霞
Owner WUHAN IRON & STEEL (GROUP) CORP
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