Mould melting-deposition forming and laser impact forging composite additive manufacturing method and device

Abstract

The invention discloses a mould melting-deposition forming and laser impact forging composite additive manufacturing method. The mould melting-deposition forming and laser impact forging composite additive manufacturing method comprises the following steps that (1) a mould blank body is cast; (2) the melting-deposition forming thickness is calculated; (3) metal powder is subjected to melting deposition through a heat source to form cladding layers, a controller controls a laser generator to conduct impact forging on a melting-deposition metal area at the plastic deformation temperature synchronously, the cladding layers are stacked layer by layer till the thickness of the cladding layers reach the thickness value in the step (2), and thus a workpiece is formed; and (4) the surface of the workpiece is treated. The invention further provides a mould melting-deposition forming and laser impact forging composite additive manufacturing device. The method adopts melting-deposition forming and laser impact forging composite manufacturing, melting-deposition forming and impact forging are conducted simultaneously, parameters are mutually coordinated and restrained in the process, thus, thermal stress, deformation and cracking can be avoided, the microstructure of a metal part is optimized, internal defects of pores, non-fusion, shrinkage porosity and the like are avoided, and the forming quality and efficiency of additive manufacturing of a metal mould are improved.

Description

technical field [0001] The invention relates to an additive manufacturing method and a device thereof, in particular to a method and a device for a composite additive manufacturing method of laser shock forging forging by mold fusion deposition. Background technique [0002] There are many methods of traditional mold manufacturing, such as CNC milling, EDM, wire cutting, casting molds, electrolytic machining, electroforming and so on. With the intensification of international competition and the development of market globalization, product replacement is rapid, and multi-variety and small batches have become an important production method in the mold industry. Traditional mold manufacturing methods cannot meet the requirements of reducing manufacturing cycle and mold manufacturing costs. [0003] As an important digital manufacturing technology, additive manufacturing is based on the discrete-accumulation principle, which can directly form any complex solid structure from a...

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Problems solved by technology

[0008] One of the objectives of the present invention is to solve the above problems, to provide a laser impact forging composite additive manufacturing method of mold deposition forming, the method can avoid thermal stress, deformation and cracking, optimize the microstructure of metal parts, avoid pores, The generation of internal defects such as fusion and shrinkage porosity improves the forming quality and efficiency of metal mold additive manufacturing

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