Nickel-based metal ceramic alloy powder exclusively used in laser cladding of surface of punch

Abstract

The invention discloses nickel-based metal ceramic alloy powder exclusively used in laser cladding of the surface of a punch. The nickel-based metal ceramic alloy powder is composed of the following ingredients in percentage by weight: 13-15% of silicon carbide, 0.2-0.3% of carbon, 4-6% of calcium fluoride, 1-4% of silicon nitride, 1.5-1.8% of vanadium, 2-4% of silicon, 7-9% of iron, 17-18% of molybdenum, 15-17% of chromium, and the balance of nickel. The nickel-based metal ceramic alloy powder is exclusively used in laser cladding of the surface of the punch, improves the metal structure density of the surface of the punch, improves the tenacity, strength, rigidity and impact resistance of the punch, and meanwhile, ensure that the punch has sufficient toughness.

Description

technical field [0001] The invention relates to an alloy powder, in particular to a nickel-based cermet alloy powder specially used for laser cladding on the surface of a punch. Background technique [0002] Laser has the characteristics of high brightness, high directionality, high monochromaticity and high coherence, and is now being used in more and more fields. Laser cladding is one of the surface treatment technologies. In a nutshell, the principle of laser cladding is to use high-energy laser beams to irradiate the surface of metal materials, the surface of the substrate is melted rapidly, the liquid metal forms a small-scale molten pool, and new powder materials are filled at the same time. , the original metal material is mixed with the added powder to form a new layer of liquid metal. After the laser beam passes through, the liquid metal layer is rapidly cooled to form a solid cladding layer on the metal surface. However, the working environment of the punch is ha...

AI Technical Summary

Problems solved by technology

However, the working environment of the punch is harsh, and the ordinary punch has poor toughness, low strength, low hardness, and poor impact resistance.

At present, there is no metal powder specially used for laser cladding of punches. In actual use, ordinary metal powder is usually used for laser cladding. The heat transfer and melting of the metal powder are not uniform, and the degree of fusion with the substrate Poor, resulting in a series of defects such as cracks, shrinkage cavities, pores, etc., and the mechanical properties of the punch after laser cladding did not achieve the expected effect

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