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Manufacturing method facilitating prolonging of service life of turning tool

A manufacturing method and life-span technology, applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., to achieve the effects of reducing phase transformation stress, good wear resistance and hot hardness, and reducing brittle cracking

Inactive Publication Date: 2014-12-03
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 manufacturing method that is beneficial to the service life of the turning tool in the prior art is the key issue to further improve the quality of the turning tool. The present invention provides a manufacturing method that is beneficial to the service life of the turning tool

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The manufacturing method that is beneficial to the service life of the turning tool 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 keeping it warm for not less than 20min, and heating to 750-800°C in the second stage and keeping it warm for a lot In 20 minutes, the heating and heat preservation is to further heat the blank to 1210-1230 ° C, and heat preservation is not less than 25 minutes, the quenching is oil cooling, and the tempering process also includes a cold treatment step, the cold treatment step and the tempering process It also includes pretreatment before cold treatment, followed by water bath tempering. The cold treatme...

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 manufacturing method facilitating prolonging of the service life of a turning tool. The method comprises steps of workblank blanking, forging, cutting, 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, and the preheating is performed by gradually warming by stages; the quenching adopts oil cooling; and the follow-up step of the tempering procedure further comprises cold treatment, pretreatment before the cold treatment is performed between the cold treatment step and the tempering procedure, the follow-up step of the cold treatment further comprises water bath tempering, the cold treatment comprises the step that the workblank obtained from the previous step is subjected to liquid nitrogen cold treatment at the temperature ranging from subzero 80 DEG C to subzero 150 DEG C, the pretreatment before the cold treatment comprises the step that the worblank is boiled for not less than 40 min at the temperature ranging from 90 DEG C to 100 DEG C or subjected to low-temperature tempering for not less than 1 h, and the water bath tempering comprises the step that the workblank obtained from the previous step is boiled for not less than 1.5 h. The process route is simple, the austenitic residue quantity is low, and the product has good wear resistance and red hardness.

Description

technical field [0001] The invention relates to the field of machining and manufacturing technology for lathe tools, in particular to a manufacturing method that is beneficial to the service life of the turning tools. 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 turning tools ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/30C21D6/04C21D1/18C21D9/22
CPCB23P15/30C21D1/18C21D6/04C21D9/22
Inventor 吴光武
Owner CHENGDU XINGBODA PRECISION MACHINERY
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