A high-performance composite roll laser injection forming manufacturing and repair method and equipment

Abstract

The invention provides a method and equipment for manufacturing and repairing a high-performance composite roll by laser spray forming, which uses laser spray forming to manufacture the transition layer and the working layer of the roll. It is characterized in that the specific method steps are as follows: A) removing the surface of the core of the roll B) Put the powder of the working layer material and the powder of the roller core into the powder feeding system respectively, and start the laser jet synchronous powder feeding through the surface of the roller whose stroke is controlled by the mechanical arm Direct metal Manufacture the intermediate transition layer of the roll; C) After one layer is deposited, the interlaced deposition is realized by changing the direction of the square spot and the movement direction of the mechanical arm; D) After the transition layer is formed, the spray forming on the surface of the transition layer is completely formed by the added The functional material constitutes the working layer. The invention uses a high-power short-wavelength laser as a processing light source and shapes the light spot of the laser into a rectangle, thereby effectively improving the quality of spray forming and increasing the processing speed.

Description

technical field [0001] The invention relates to the application field of laser technology, in particular to a high-performance composite roll laser spray forming manufacturing and repairing method, equipment and device thereof. Background technique [0002] At present, laser technology is widely used in the roll industry. Technologies such as laser quenching, laser texturing, laser remelting, laser alloying, and laser cladding have been widely used in the strengthening and repair of roll surfaces. Although these technologies have improved the wear resistance of the roll to a certain extent, prolonging its service life. However, due to the influence of factors such as laser power, spot size, scanning speed and powder feeding rate, the processing speed is relatively slow, and it is only suitable for partial repair of the roll. It is difficult to achieve large-scale repair and regeneration of the entire roll, let alone use for the direct manufacture of rolls. In addition, due...

AI Technical Summary

Problems solved by technology

However, due to the harsh conditions such as high pressure and high temperature that the roll is subjected to during work, it often causes problems such as cracking and peeling of the working layer, which limits the large-scale application of the composite roll.

Images