Method for preparing forging mould by double-layer metal resurfacing welding based on cast steel substrate

Abstract

The invention discloses a method for preparing a forging mould by double-layer metal resurfacing welding based on a cast steel substrate. In the invention, cast steel is utilized as a forging mould substrate, a wave-shaped substrate surface is formed, double-layer metal resurfacing welding is carried out on a substrate layer, then tempering is carried out to remove stress, and finally, a mould isprocessed and formed by a machine. The invention provides a method for preparing the forging mould, which can better meet the performance requirements of a mould of the forging mould in the aspects of the hardness, the strength, the toughness and the like and also can decrease the production cost; the invention realizes the manufacture and use of the mould with low cost, low energy consumption, short time, high utilization rate, high efficiency, high performance and high benefit and has an imponderable meaning for the mould industry.

Description

technical field [0001] The invention relates to a method for preparing a forging die. Background technique [0002] With the rapid development of my country's economic level and the great improvement of the degree of industrialization, the application of various forging dies is becoming more and more common and important. How to use less resources to produce more products with better quality will be It is a direction of industrial development, so when designing forging dies, it is necessary to comprehensively consider its performance and cost. In the prior art, various die steels are often used to manufacture forging dies. Some die steels have good comprehensive properties such as strength, hardness and toughness, which can meet the requirements of forging die working conditions, but generally have higher prices, more preparation processes, and longer cycles. Other mold steels are either too high in hardness and strength, poor in toughness and plasticity, and the edge corne...

AI Technical Summary

Problems solved by technology

Some die steels have good comprehensive properties such as strength, hardness and toughness, and can meet the requirements of forging die working conditions, but generally the price is high, the preparation process is more, and the cycle is longer

Other mold steels are either too high in hardness and strength, poor in toughness and plasticity, and the edge corners are easy to crack and peel off during processing, making the sharp corner blunt or defective; or they are low in hardness and strength. In order to maintain sufficient toughness and plasticity, the mold The contact surfaces wear out faster due to their softness

The above two cases will change the size and shape of the mold, which will seriously affect the dimensional accuracy and surface roughness after processing

Even if the mold is re-modified and replaced, the time period will be extended and the production cost will be increased, and the re-installation and positioning of the mold will definitely affect the processing quality of the product

[0003] To sum up, in the existing forging dies, the performance and cost of the dies often cannot be well satisfied at the same time.

Die steels with better hardness, strength and toughness and plasticity are usually very expensive, and the mold manufacturing process is more

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