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Turning tool machining technology for improving machining efficiency and product quality

A technology of product quality and processing efficiency, applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., to achieve the effects of improving hardness and wear resistance, benefiting service life, and simplifying the process

Inactive Publication Date: 2014-11-05
CHENGDU XINGBODA PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to further optimize the turning tool processing technology that is beneficial to processing efficiency and product quality in the prior art is the key issue to further improve the quality of turning tools. The present invention provides a turning tool processing technology that is beneficial to processing efficiency and product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The turning tool processing technology that is beneficial to processing efficiency and product quality includes sequential blank blanking, forging, cutting, heat treatment and grinding. The blank is W2MoCr4V2Co8 high-speed tool steel, and the heat treatment includes sequential preheating, Heating and heat preservation, quenching and tempering. The preheating is carried out by gradually increasing the temperature in stages. The preheating includes heating to 450-600°C in the first stage and holding it for not less than 20min, and heating to 750-800°C in the second stage. The heat preservation is not less than 20min. The heating and heat preservation is to further heat the blank to 1210-1230°C, and the heat preservation is not less than 25min. The tempering step consists of multiple single-step tempering, and each single-step tempering is the The blank obtained in the previous step is heated to 500-550°C, held for not less than 0.8h, and then air-cooled or oil-cooled, and ...

Embodiment 2

[0019] This embodiment is further limited on the basis of Embodiment 1. In order to prevent the oil stains on the blank from affecting the heat treatment during the machining process and affect the final quality of the product, a cleaning step is also included between the cutting process and the heat treatment. The cleaning step includes a degreasing cleaning process and a drying process carried out in sequence.

[0020] Further, the quenching and tempering also include sequential degreasing and cleaning processes, drying processes and inspection processes. The set inspection process is to check the quenching quality of the blank, such as the appearance of cracks and thermal deformation, and the observation of the uniformity of quenching, so as to avoid the blanks that do not meet the quality requirements from entering the next step of processing and wasting processing resources.

[0021] In order to facilitate cutting, an annealing step is also included between the forging an...

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Abstract

The invention discloses a turning tool machining technology for improving machining efficiency and product quality. The turning tool machining technology comprises the processes of blank blanking, forging, cutting, heat treatment and grinding in sequence. A blank is W2MoCr4V2Co8 high-speed tool steel. The heat treatment process includes preheating, heating and heat insulation, quenching and tempering in sequence. Preheating is conducted in a staged mode with the temperature gradually increased. The tempering step is composed of many single steps of tempering; according to each single step of tempering, the blank obtained through the last step is heated to range from 500 DEG C to 550 DEG C, heat insulation is conducted on the blank for no shorter than 0.8 h, then air cooling or oil cooling is conducted, the cooling speed of air cooling and the cooling speed of oil cooling are no larger than 25 DEG C / s, and quenching is oil cooling. The technology is simple in circuit, the hardness number of the turning tool can be more than 72 HRC, the good wear resistance and heat hardness are achieved, and machining efficiency and product quality are improved.

Description

technical field [0001] The invention relates to the field of lathe tool processing and manufacturing technology, in particular to a turning tool processing technology that is beneficial to processing efficiency and product quality. Background technique [0002] In the machining industry the lathe is considered the working "mother machine" of all equipment. Lathes are mainly used to process shafts, discs, sleeves and other workpieces with rotating surfaces, mainly cylinders, and are the most widely used type of machine tools in machinery manufacturing and repair factories. Turning tools are used for turning and have a Cutting tool. Turning tool is one of the most widely used tools in cutting. [0003] With the development of modern manufacturing technology, high-speed steel turning tools are widely used in cutting. During use, the cutting part of the turning tool has to bear a lot of pressure, friction, impact and work at a higher temperature, which makes high-speed Steel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/30C21D1/26C21D9/22
CPCB23P15/30C21D1/26C21D9/22
Inventor 吴光武
Owner CHENGDU XINGBODA PRECISION MACHINERY
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