Laser alloying method of shaped roll

Abstract

The invention relates to a laser alloying method of a shaped roll, which comprises the following steps: A)pre-treating the surface of the roll; B)coating a layer of light absorption paint containing 35-45% of carbonization particles on the pretreated roll surface, and drying in air; C)scanning the coating surface of the roll by layer, wherein the laser power is 2.0-2.5KW, the scanning speed is 200-300mm / min, spot size is 15*2mm; and D)detecting the product. The unique performance of rapid heating and cooling of the layer can be used, the carbide material alloy particles are added on a surface fusion layer of the work surface of the shaped roll by laser beam, and then a layer of alloying layer is formed, the carbide particles are existed on a work surface layer of the roll by a coating mode, the carbide particles with high hardness and high wear resistance are used for increasing the service life of the work surface, so that the roll has enough toughness, production efficiency of the roll is greatly increased, and roll loss can be reduced.

Description

technical field [0001] The invention relates to a laser alloying method for a shaped steel roll, in particular to a process for performing surface alloying treatment on a shaped steel roll by using a laser heating method. Background technique [0002] In medium-sized steel mills, due to the large variety and specifications of steel, it is necessary to prepare a large number of steel rolling tools - rolls. Among the many production tools, the consumption of rolls is the largest. The average annual steel roll consumption of a medium-sized steel plant is about 50 million yuan. The huge cost consumption directly affects the product cost and restricts the benefit development of the steel plant. How to achieve high performance of low-cost material rolls is a problem that steel mills have been urgently needing to solve. Steel mills are in urgent need of a method or material that can not only increase the steel passing capacity of rolls, but also save the cost of roll materials. C...

AI Technical Summary

Problems solved by technology

The average annual steel roll consumption of a medium-sized steel plant is about 50 million yuan. The huge cost consumption directly affects the product cost and restricts the benefit development of the steel plant.