Turning tool manufacturing technology capable of reducing heat damage and facilitating processing

A manufacturing process and heat damage technology, applied in the direction of manufacturing tools, heat treatment furnaces, heat treatment equipment, etc., to achieve the effects of reduced retained austenite content, reduced heating deformation, and short residence time

Inactive Publication Date: 2014-12-03
CHENGDU HENGTONG ZHAOYE 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 manufacturing process in the prior art that can reduce thermal damage and facilitate processing is the key issue to further improve the quality of the turning tool. The present invention provides a turning tool that can reduce thermal damage and facilitate processing manufacturing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The turning tool manufacturing process that can reduce thermal damage and facilitate processing includes sequential blanking, forging, cutting, heat treatment and grinding. The blank is W2MoCr4V2Co8 high-speed tool steel, and the heat treatment includes sequential pre-processing. Heating, heating and heat preservation, quenching and tempering, the preheating is carried out by gradually increasing the temperature in stages, and the preheating includes heating to 450-600°C in the first stage and keeping the temperature for not less than 20min, and heating to 750-800°C in the second stage ℃ and heat preservation for not less than 20min, the heating and heat preservation is to further heat the blank to 1210-1230℃, and heat preservation for not less than 25min, the forging and cutting process also includes an annealing step, the annealing step is to forge The blank is heated step by step: heating from normal temperature to 600-650°C for no less than 10 minutes, continuing to ...

Embodiment 2

[0021] 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.

[0022] 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.

[0023] In order to prevent the blank from being oxidized during the cooling process and prevent ...

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PUM

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Abstract

The invention discloses a turning tool manufacturing technology capable of reducing heat damage and facilitating processing. The turning tool manufacturing technology comprises steps of workblank blanking, forging, cutting processing, heat treatment and grinding which are performed sequentially, wherein the workblank adopts W2MoCr4V2Co8 high-speed tool steel; the heat treatment comprises steps of preheating, heating and heat insulation, quenching and tempering which are performed sequentially, the preheating is performed by gradually warming by stages, the heating and heat insulation step is that the workblank is further heated to 1,210-1,230 DEG C, and heat insulation is performed for not less than 25 min; and an annealing step is performed between the forging and the cutting processing and is that the forged workblank is heated step by step. The technology has a simple route and small heat damage to a turning tool, the hardness value of the obtained turning tool can be higher than 72 HRC, and the obtained turning tool has good wear resistance and red hardness as well as long service life.

Description

technical field [0001] The invention relates to the field of machining and manufacturing techniques for lathe tools, in particular to a turning tool manufacturing technique that can reduce thermal damage and facilitate machining. 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 tu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/30C21D9/22C21D1/18C21D1/26
CPCB23P15/30
Inventor 吴光武
Owner CHENGDU HENGTONG ZHAOYE PRECISION MACHINERY
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