A kind of preparation method of sandwich layer forging die and forging die sandwich layer surfacing welding

Abstract

The invention discloses a sandwich layer forging die and a preparation method of forging die sandwich layer surfacing. The sandwich layer forging die is used for surfacing a layer of sandwich layer soft welding material which is better in plasticity and lower in yield strength than a cast steel substrate and a double-metal gradient surfacing material between the cast steel substrate and the double-metal gradient surfacing material; the preparation method of the forging die sandwich layer surfacing comprises the following steps of taking cast steel as the cast steel substrate, and welding a sandwich layer soft material on a substrate layer; surfacing a transition layer material on a substrate of a sandwich layer welded, welding and covering all sandwich materials to form a surfacing transition layer; welding a high-temperature wearing layer material; tempering to distress after the completion of the welding, and then mechanically processing to obtain a mould. The sandwich layer forging die provided by the invention is long service life and high in loading capacity of the cast steel substrate. According to the method provided by the invention, the critical bottleneck problems that the forging die is low in life and the die is high in manufacturing cost can be solved thoroughly, the die forging forming of various materials can be supported at high temperature and high pressure, and a brand new manufacturing method can be provided for forging die manufacturing.

Description

technical field [0001] The invention belongs to the technical field of moulds, and in particular relates to a forging die with a sandwich layer and a preparation method for surfacing welding of the sandwich layer of the forging die. Background technique [0002] With the development of the country's heavy equipment manufacturing industry, equipment manufacturing industries such as large aircraft and shipbuilding need to rapidly upgrade their capabilities. The world's largest large-scale die forging hydraulic press (80,000 tons press) came into being. The forging dies used have been widely used in the production of large die forgings in aviation, aerospace, nuclear power, petrochemical and other fields, such as large aircraft fuselages Frames, landing gear, engine turbine discs, etc. The forging materials of these forgings mainly include aluminum alloys, high-temperature alloys, titanium alloys, etc., all of which need to be formed by forging dies. However, the forming tempe...

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Problems solved by technology

[0005] Another object of the present invention is to provide a method for preparing forging die sandwich layer surfacing, which can prolong the life of the forging die, shorten the new product development cycle, and at the same time reduce the cost of die manufacturing, fundamentally solve the problem of Solved the key bottleneck problems of extremely low die life and expensive die manufacturing costs for large-scale hard-to-deform materials

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