Method of preparing novel gradient functional material fine blanking die based on laser fusing-covering forming technique

Abstract

The invention relates to laser cladding molding technology; wherein, a common steel base is molded to high-performance material. The requirements for material performance are met during the manufacture process of fine blanking die. To prolong the service life of fine blanking die, the requirements for material are satisfied, which substitutes the costly metallurgical steel powders. Based on the laser cladding molding technology, the manufacture method of the new gradient functional material fine blanking die comprises the steps that: firstly, high-energy laser beam locally melt the metal surface of base to form a molten pool; secondly, metal materials are sent to the molten pool and forms a plurality of new metallic layers with low rate of dilution, combining with the base metal metallurgy. The invention has the advantages of enabling to achieve no-model rapid approximately-final molding of high-performance compact metal components, improving the prior rapid prototype technology to a new level of the directly molding of full-density high-intensity functional material component, and being an integration of rapid molding basic principle and laser process quintessence.

Description

technical field [0001] The present invention generally relates to a mold manufacturing method, in particular to a novel gradient functional material fine-blanking mold manufacturing method based on laser cladding molding technology. Background technique [0002] The rapid development of the automobile industry and the increasingly fierce market competition have put forward higher technical requirements for auto parts from material properties to manufacturing precision. The fine blanking process is gradually replacing the traditional stamping process. At present, some domestic and foreign automobile mold manufacturers with relatively advanced technology and strong strength use powder metallurgy steel instead of mold steel as mold material, and manufacture fine blanking molds according to traditional methods. Powder metallurgy steel is smelted by special methods, which is easy to cause environmental pollution. At the same time, due to the technical monopoly due to the complex...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN 01131777.9 provides a method for preparing and forming gradient materials, which overcomes the shortcomings that the laser coating method is only used to prepare a simple layered gradient protective coating on the surface of the material, and the gradient structure cannot be accurately controlled, and solves the problem of large blocks. The rapid prototyping preparation technology of gradient materials, which adopts the laser coating method, through the precise control of the feeding amount of different material powders at different positions in each two-dimensional plane trajectory, synchronously feeds the laser molten pool during the laser coating process. Powders with different material ratios are fed into the medium to prepare multi-material arbitrary composite gradient materials.

But it does not involve the manufacture of fine blanking dies

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