Laser repair material for granulator template

Abstract

The invention discloses a laser repairing material of a pelletizer template. The laser repairing material comprises Cr and further comprises W, C, Mo, Mn, Fe, Ti and Ni and includes, by mass percent, 20%-25% of Cr, 10%-15% of W, 10%-12% of Mo, 0.2%-1% of Fe, 0.1%-0.9% of Mn, 0.1%-0.8% of C, 0.1%-1% of Ti and the balance Ni. According to the laser repairing material of the pelletizer template, due to the fact that alloy matrix strengthening elements, grain refining elements and grain boundary strengthening elements are added and the percent content of all the elements are adjusted, an alloy matrix is strengthened, the quality of a grain boundary is improved, and an alloy has good comprehensive performance; and thus, the pelletizer template has the beneficial effects of good high temperature resistance, pressure resistance, high temperature oxidation resistance and good toughness.

Description

technical field [0001] The invention relates to a laser repair material with high temperature resistance, pressure resistance and superior cladding performance, in particular to a laser repair material for a granulator template in the petrochemical industry (mainly plastic products). Background technique [0002] The device template in the granulator of the petrochemical industry has complex manufacturing process, high production cost and long cycle, and is a product used in large quantities in the plastics industry. , the middle is a hollow structure, and the material is high-temperature hard alloy. The template of the granulator continues to work at a high temperature of 200-300°C for a long time. The temperature of the combustion and cleaning is 390°C. 5-8kg, the material pressure is 200 kg, and it is subjected to high-temperature oxidation, cold and heat fatigue and pressure shock during work. Therefore, cracks are easy to appear on the granulator template, and once crac...

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Problems solved by technology

[0007] Due to the fact that foreign granulators usually use high-temperature alloys when they are manufactured, they cannot be repaired at home and abroad. Therefore, the applicant has invented a kind of granulator for granulators after long-term theoretical analysis and a large number of tests. The special repair material for laser repair, combined with the advanced remanufacturing technology of laser cladding, prepares a special coating and applies it to the granulator template machine, which can effectively solve the above problems