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High-speed steel cutter annealing process

An annealing process, high-speed steel technology, applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of difficult uniformity of furnace temperature, inconvenient operation, long process cycle, etc., achieve good uniformity of furnace temperature, shorten annealing cycle, The effect of tissue uniformity and stability

Inactive Publication Date: 2016-06-29
CHONGQING YEGAO FURNITURE CO LTD
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Problems solved by technology

In the prior art, the annealing process of W12Cr4V4Mo high-speed steel has a long cycle, the furnace temperature is not easy to be uniform, and the operation is inconvenient. At the same time, it has a serious impact on the mechanical properties and manufacturability of the tool.

Method used

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Embodiment Construction

[0007] The present invention will be further described below in conjunction with embodiment:

[0008] An annealing process for high-speed steel cutting tools, the material of which is W12Cr4V4Mo, comprising the following steps: raising the temperature to 880°C at a heating rate of 80°C / h, keeping the temperature for 3 hours, opening the furnace door, cooling with the furnace to 750°C, holding the temperature for 5 hours, and then After cooling to 530°C with the furnace, it is cooled out of the furnace. After annealing, the structure material is sorbite + carbide.

[0009] The annealing process of the high-speed steel cutting tool of the present invention adopts rapid heating, saves energy and time, adopts isothermal annealing, has good furnace temperature uniformity, uniform and stable structure, shortens the annealing period, and improves comprehensive properties such as wear resistance and toughness.

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Abstract

The present invention discloses a high-speed steel cutter annealing process, a material is W12Cr4V4Mo, the high-speed steel cutter annealing process is characterized by comprising the following steps: in the heating rate of 60-80 DEG C / h, heating to the temperature of 860-880 DEG C, performing thermal insulation for 3-4h, opening a door of a furnace, cooling to 730-750 DEG C in the furnace, performing thermal insulation for 5-6h, then cooling to 500-540 DEG C in the furnace, then taking out of the furnace for cooling, and annealing to obtain tissue materials of sorbite and carbides. The high-speed steel cutter annealing process uses rapid heating, so that the high-speed steel cutter annealing process is energy and time saving, the high-speed steel cutter annealing process uses isothermal annealing, so that furnace temperature uniformity is good, tissues are uniform and stable, the annealing cycle is shortened, and the overall performance of wear resistance and toughness and the like can be improved.

Description

technical field [0001] The invention belongs to the field of heat treatment technology, in particular to an annealing technology for high-speed steel cutting tools. Background technique [0002] With the development of my country's machinery industry, the cutting speed and the amount of cutting are increasing day by day. Due to the effect of friction, the heat generated per unit time is also increasing. Under such circumstances, the tool must still maintain high hardness, strength and wear resistance, and the comprehensive performance of the tool steel must be continuously improved. In the prior art, the annealing process of W12Cr4V4Mo high-speed steel has a long period, the furnace temperature is not easy to be uniform, and the operation is inconvenient. At the same time, it has a serious impact on the mechanical properties and manufacturability of the cutting tool. Contents of the invention [0003] The purpose of the present invention is to address the deficiencies in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D9/22
Inventor 车海波
Owner CHONGQING YEGAO FURNITURE CO LTD
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