Laser cladding process

Abstract

The invention discloses a laser cladding process. The laser cladding process comprises the following steps: putting YCF101 powder in a drying box, drying the YCF101 powder for 5h at a constant temperature of 80 DEG C, then pouring the YCF101 powder into a laser cladding powder feeder, and performing powder feeding coaxially for cladding; grinding a substrate, and cleaning the substrate with alcohol to remove impurities so as to obtain a smooth to-be-cladded substrate; and performing laser cladding layer by layer on the smooth to-be-cladded substrate by employing a IPG optical fiber laser according to a certain laser processing parameter and a certain laser scanning policy. According to the laser cladding process disclosed by the invention, defect accumulation as powder is stuck to a lap joint by way of single form interlaminar lap joint is weakened effectively. The extension direction of the defects is consistent to an interlayered scanning track. By crossed longitudinal interlaminar lap of multiple groups, the defects are uniformly distributed on the cladding plane, and the defect degree is reduced effectively; the extension direction of a bath is also consistent to the scanning direction, so that the high temperature of the bath in the next layer also alleviates pores at the lap joint effectively.

Description

technical field [0001] The invention belongs to the field of laser cladding processing technology, and in particular relates to a laser cladding process for removing internal pores, cracks and uniform internal structures of laser cladding formed parts. Background technique [0002] The application of laser cladding parts in various industries is getting more and more attention. Due to the forming principle of laser cladding, the manufacturing and forming of some complex special-shaped parts has become a reality. The manufacturing process does not require molds and fixtures, and there is no loss of tools. It is very suitable for complex parts that are difficult to manufacture with traditional processing methods. Compared with the traditional manufacturing method, the laser cladding technology does not need to consider the complexity of the parts. It is the machine that adapts to the time and the parts, while the traditional manufacturing method is that the parts are adapted t...

AI Technical Summary

Problems solved by technology

Compared with the traditional manufacturing method, the laser cladding technology does not need to consider the complexity of the parts. It adapts the machine to the time and the parts, while the traditional manufacturing method adapts the parts to the machine, and the manufacturing of the parts is affected by the development level of the existing equipment.

For some complex parts and small batch parts, the traditional manufacturing method is costly and the research and development cycle is long. Laser cladding can effectively overcome these shortcomings

[0003] At present, the parts manufactured by coaxial powder feeding have porosity as the main defect, and the uneven distribution of the structure also affects the performance of the parts.

Although many researchers have studied the laser cladding forming process, few specific solutions have been proposed, and no clear method to solve this problem has been proposed.

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