Round hole plunger chip processing technology

A processing technology and round hole technology, applied in the field of round hole punch processing technology, can solve the problems of short service life of the punch and insufficient toughness of the core, and achieve the effect of improving the service life

Inactive Publication Date: 2016-09-21
NANJING VOCATIONAL UNIV OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of processing technology is too simple, the outer hardness of the manufactured round hole punch is large, but the toughness of the core is not enough, resulting in a short service life of the punch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The round hole punch processing technology is divided into five steps. The alloy tool steel with the brand name Cr12MoV is selected as the processing rough material to manufacture the round hole punch. The processing technology includes the following steps: first perform (1) spheroidizing annealing: for cylindrical Cr12MoV steel Carry out spheroidizing annealing treatment, heat the punch blank to 700°C for 2h, then air cool to 650°C for 6h, and finally air cool to room temperature; Carry out turning processing, process the round hole punch blank, and leave a machining allowance; then perform (3) quenching: put the round hole punch blank in a quenching furnace and heat it to 860 ° C for 3 hours, and cool it to room temperature with oil; Carry out (4) tempering: put the quenched round hole punch blank into the tempering furnace and add it to 320 ° C, air cool to room temperature, and then use the CNC lathe to finish the round hole punch blank; finally carry out (5) Laser ...

Embodiment 2

[0019] The processing technology of the round hole punch is carried out in five steps. The alloy tool steel with the brand name Cr12MoV is selected to manufacture the round hole punch for the processing blank. The processing technology includes the following steps: firstly carry out (1) spheroidizing annealing: for the cylindrical Cr12MoV steel Carry out spheroidizing annealing treatment, heat the punch blank to 710°C for 2h, then air cool to 660°C for 6h, and finally air cool to room temperature; Carry out turning processing, process the round hole punch blank, and leave a machining allowance; then perform (3) quenching: put the round hole punch blank in a quenching furnace and heat it to 880 ° C for 3 hours, and cool it to room temperature with oil; Carry out (4) tempering: put the quenched round hole punch blank into the tempering furnace and add it to 340 ° C, air cool to room temperature, and then use the CNC lathe to finish the round hole punch blank; finally carry out (5...

Embodiment 3

[0021] The processing technology of the round hole punch is carried out in five steps. The alloy tool steel with the brand name Cr12MoV is selected to manufacture the round hole punch for the processing blank. The processing technology includes the following steps: firstly carry out (1) spheroidizing annealing: for the cylindrical Cr12MoV steel Carry out spheroidizing annealing treatment, heat the punch blank to 720°C for 2h, then air cool to 670°C for 6h, and finally air cool to room temperature; Carry out turning processing, process the round hole punch blank, and leave a machining allowance; then perform (3) quenching: put the round hole punch blank in a quenching furnace and heat it to 890 ° C for 3 hours, and cool it to room temperature with oil; Carry out (4) tempering: put the quenched round hole punch blank into the tempering furnace and add it to 360 ° C, air cool to room temperature, and then use the CNC lathe to finish the round hole punch blank; finally carry out (5...

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PUM

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Abstract

The invention discloses a round hole plunger chip processing technology. Cr12MoV steel is selected as a raw material, spheroidizing annealing, mechanical roughening, quenching and tempering are conducted, and then a CO2 laser of 5 KW is used for conducting laser surface quenching on round hole plunger chips. The CO2 laser of 5 KW can quickly scan the plunger chips by high energy laser beams, a layer of ultra-thin shell on the surface of each plunger chip can quickly absorb energy so that the temperature can sharply rise, self-quench hardening can be conducted instantly, surface hardening of the plunger chips is achieved, the insides of the round hole plunger chips still keep the high toughness, and the service life of the round hole plunger chips is prolonged.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a round hole punch processing technology. Background technique [0002] The punch is a part of the stamping die, which is installed on the stamping die for continuous punching and punching operations, so that the processed materials are separated or plastically deformed, so as to obtain the required finished or semi-finished products. The punch is installed on the stamping die, and it is in direct contact with the material during work to deform and cut the material. A round hole punch is a punch used to punch out a round hole. [0003] At present, the material selection of round hole punches is very traditional, and its processing technology is relatively common. Often only the heat treatment methods of quenching and tempering are used to process punches. This kind of processing technology is too simple, and the outer hardness of the manufactured round hole punch ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/20
Inventor 陈海琴
Owner NANJING VOCATIONAL UNIV OF IND TECH
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