Machine tool guide rail broad band laser-quenching technique

Abstract

The present invention provides a machine tool guide rail broad band laser quenching process, which includes: A. Gasoline or alcohol is used to remove oil stain or rust on the surface of a steel rail, then sand paper is used to polish the surface of the guide rail to remove the oil stain further, so that a light absorbing coat can be applied evenly; B. A spraying gun or a brush can be used to apply the SiO2 light absorbing dope well proportioned with adhering agent mixture on the surface of the guide rail evenly, to improve the absorbing rate of the SiO2 laser by the metal surface; the prescription of the dope and the adhering agent is 80-100gSiO2 plus 500-600ml alcohol plus 15ml paint flake, and the pre-coating thickness is 0.02-0.05mm; C. An air-dry coat; D. A 3-6KW crosscurrent CO2 laser is used to scan the guide rail arranged on a laser numerical control machine at a speed of 250-800mm/min, to heat and cool the SO2 coat on the surface of the guide rail rapidly. The present invention has the advantages that the quenching rigidity is high, the workpiece distortion is small, the quenching medium is not needed, and the work efficiency is high, oxygenation and pollution cannot be produced.

Description

technical field [0001] The invention relates to a broadband laser quenching process for machine tool guide rails. Background technique [0002] The guide rail of the machine tool is quenched and hardened. The traditional process adopts the intermediate frequency induction heating and quenching process. This process has the following problems: 1. The heating transition zone is wide; 2. The hardened layer is deep; 3. The cooling is water-cooled; due to the above reasons, the result is quenching deformation Large, after the plane quenching of the guide rail with a length of 2.4m, the maximum depression in the middle reaches 2.5mm. Excessive deformation and excessive processing after quenching have always been a major problem in the machine tool processing industry, which directly increases the manufacturing cost of the machine tool. Contents of the invention [0003] In response to the above problems, our company independently developed a broadband laser quenching process te...

AI Technical Summary

Problems solved by technology

[0002] The guide rail of the machine tool is quenched and hardened. The traditional process adopts the intermediate frequency induction heating and quenching process. This process has the following problems: 1. The heating transition zone is wide; 2. The hardened layer is deep; 3. The cooling is water-cooled; due to the above reasons, the result is quenching deformation Large, the maximum dent in the middle reaches 2.5mm after plane quenching of the guide rail with a length of 2.4m

Excessive deformation and excessive processing after quenching have always been a major problem in the machine tool processing industry, which directly increases the manufacturing cost of the machine tool