Laser restoring process for surface of high carbon alloy roller

Abstract

The invention relates to a laser restoring process for the surface of a high carbon alloy roller. The laser restoring process comprises the following steps: (A) processing the surface of the roller, and carrying out failure analysis on the roller; (B) optimizing process parameters according to failure analysis results of the roller, and carrying out laser cladding; adopting a preset powder-feeding mode to enable a fast-transverse-flow carbon dioxide laser serving as a light source to carry out continuous screwfeed lap joint scanning on the roller; and enabling adopted alloy powder to comprise, by weight, no more than 0.15% of C, 12.5%-14.5% of Cr, 1.3%-1.8% of B, 0.5%-1.5% of Si, 0.5%-1.5% of Mo, and the balance Fe; and (C) performing detection. The laser restoring process for the surface of the high carbon alloy roller carries out laser cladding on the surface of the roller to enable the dimensions of the roller to meet the using requirements, a roller base body and a cladding layer are combined tightly, the thickness and the hardness of the cladding layer are uniform, and abrasion resistance of the roller can be enhanced.

Description

Technical field [0001] The invention relates to a laser cladding method, in particular to a laser cladding repair method on the surface of a roller. Background technique [0002] Since the 1990s, China's steel industry has developed rapidly. In 2006, it produced 423 million tons of steel, accounting for one-third of the world's steel output. In 2010, my country's steel output further increased to 627 million tons, a record high. In order to realize the rolling demand of high-grade steel products, the domestic high-end roll research and development process has been accelerated. A large number of imported rolls have been successfully developed in a short time and replaced imports, which greatly meets the development needs of the domestic steel industry. As an important tool in the steel rolling industry, rolls are the most important consumable part of steel rolling equipment. With the increase in steel production, roll consumption increases rapidly. Rough calculation, if we estima...

AI Technical Summary

Problems solved by technology

The current rolls are all made of new roll materials such as MC3 series and MC5 series. Due to the adjustment of the chemical composition of this type of steel, its overall mechanical properties and heat treatment performance have been greatly improved, which complies with the market demand. sex is greatly reduced

Common surfacing welding methods are prone to defects such as cracks, pores, and insufficient hardness, which makes the repair of rolls of this type of material difficult