Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of steel hub cold stamping die

A technology of cold stamping and mold, which is applied in the field of stamping mold preparation, can solve the problems of not being able to meet the life of cold stamping molds of wheel hub manufacturers, easy to fall off, poor use effect, etc., achieve high hardness, excellent wear resistance, and reduce production costs Effect

Active Publication Date: 2016-02-10
TANGSHAN CITY FENGNAN DISTRICT TIANZE SCI & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Engineers and technicians also try to improve the hardness and wear resistance of the surface of the cold stamping die by spraying hard materials, but in actual production, due to the mechanical combination of the sprayed material and the surface of the cold stamping die, it is easy to fall off under huge pressure. The use effect is very poor, and it cannot meet the needs of wheel hub manufacturers to extend the life of cold stamping dies

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Using 40Cr as the raw material, the steel hub cold stamping die is processed according to the standard drawings, and the surface of the cavity of the cold stamping die to be alloyed is cleaned with acetone. According to the volume ratio of 1:20, fully mix pure chromium metal powder with a particle size of 800-1000 mesh and milky white glue, mix evenly and apply it on the cavity surface of the cold stamping die to be strengthened, the coating thickness is 0.1mm, and let it dry Dry. Use a high-power semiconductor laser to scan the cavity surface of the cold stamping die. The process parameters of laser scanning are: laser power P=1800W; scanning speed V=400mm / min; rectangular spot size is 2×8mm; lap rate is 10 %, a wear-resistant high-chromium carbide alloy layer is formed in situ on the surface of the 40Cr cold stamping die.

Embodiment 2

[0021] Using 40Cr as the raw material, the steel hub cold stamping die is processed according to the standard drawings, and the surface of the cavity of the cold stamping die to be alloyed is cleaned with acetone. According to the volume ratio of 1:20, fully mix pure chromium metal powder with a particle size of 800-1000 mesh and milky white glue, mix evenly and apply it on the surface of the cavity of the cold stamping die to be alloyed, the coating thickness is 0.2mm, to dry. Use a high-power semiconductor laser to scan the cavity surface of the cold stamping die. The process parameters of laser scanning are: laser power P=2400W; scanning speed V=500mm / min; rectangular spot size is 2×8mm; lap rate is 15 %, a wear-resistant high-chromium carbide alloy layer is formed in situ on the surface of the 40Cr cold stamping die.

Embodiment 3

[0023] Using 40Cr as the raw material, the steel hub cold stamping die is processed according to the standard drawings, and the surface of the cavity of the cold stamping die to be alloyed is cleaned with acetone. According to the volume ratio of 1:20, fully mix the pure chromium metal powder with a particle size of 800-1000 mesh and milky white glue, mix evenly and apply it on the surface of the cavity of the cold stamping die to be alloyed, the coating thickness is 0.15mm, to dry. Use a high-power semiconductor laser to scan the cavity surface of the cold stamping die. The process parameters of laser scanning are: laser power P=3000W; scanning speed V=600mm / min; rectangular spot size is 2×8mm; lap rate is 20 %, a wear-resistant high-chromium carbide alloy layer is formed in situ on the surface of the 40Cr cold stamping die.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of a cold punching die of a steel hub. The preparation method mainly comprises the following steps: by using 40Cr as a raw material, processing the cold punching die of the steel hub, and cleaning the surface of a to-be-alloyed cavity of the cold punching die with acetone; smearing uniformly mixed pure chromium metal powder and white emulsoid in a volume ratio of 1 to 20 on the surface of the cavity of the cold punching die, wherein the thickness of the coating is 0.1mm-0.2mm, and airing; scanning the surface of the cavity of the cold punching die by adopting a high power semiconductor laser, wherein the power of the laser P is 1800W-3800W, the scanning speed V is 400mm / minute-800mm / minute, the rectangular spot size is 2mm*8mm and the overlap rate is 10%-30%; and after laser scanning, in-situ-generating a high chromium carbide alloy layer on the cavity of the cavity of the cold punching die of the steel hub. According to the intensified cold punching die of the steel hub, the service life is prolonged and the production cost of an enterprise is lowered.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, in particular to a method for preparing a stamping die. Background technique [0002] Compared with aluminum alloy wheels, steel wheels have great advantages in terms of cost and safety, and are currently widely used in trucks. The common production method of steel wheels is to stamp alloy steel plates under pressure through cold stamping dies. The service life of cold stamping dies is an important factor affecting the mass production of steel wheels. Cr12MoV die steel is mostly used as raw material for cold stamping dies, and the cost of raw materials and processing and manufacturing are relatively high. Therefore, how to improve the service life of cold stamping dies is of great significance for reducing production costs and improving production efficiency. [0003] At present, the methods commonly used to improve the service life of cold stamping dies are: 1. Optimizing the str...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C23C26/00B21D37/10
Inventor 张云江杨帆
Owner TANGSHAN CITY FENGNAN DISTRICT TIANZE SCI & TECH