Steel has the characteristics of high strength, good plasticity, good process performance, and easy processing, so it is widely used in industrial production. However, steel is easy to corrode and has poor fire resistance, which leads to oxide layer and rust during processing, which reduces the quality of the metal and hinders subsequent finishing operations.
Laser cleaning
Laser cleaning is a new cleaning method developed in recent years. It uses the vibration of laser pulses, the thermal expansion of particles, the photolysis of molecules or phase change or their combined effects to overcome the binding force between dirt and the surface of the substrate, so that the dirt is removed from the surface to achieve the purpose of cleaning.
Advantages of Laser Cleaning
Laser cleaning technology has the advantages of good cleaning effect, high control precision, wide application range, low operating cost, and zero environmental pollution. It is a supplement and extension of traditional cleaning methods, innovation and improvement, and can meet the needs of unsatisfactory or useless conventional cleaning. occasion.
Application of Laser Cleaning in Steel Manufacturing
1. Steel laser cutting pretreatment
Laser cutting has been widely used in many fields of the national economy. The cutting quality is affected by the unclean layer on the surface of the material. Laser cleaning can be used for non-destructive cleaning of corroded steel plates and oil pipes with paint layers, so as to effectively ensure the quality of laser cutting. quality.
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2. Laser cleaning before and after welding
The surface cleanliness before metal welding directly affects the quality of welding. Laser cleaning can accurately clean the surface before welding, thus effectively ensuring the quality of welding.
Impurities on the metal surface after welding and the oxide layer on the weld surface seriously affect the post-beautification treatment. Laser cleaning can efficiently clean the oxides, impurities, and oil stains on the weld without damaging the weld base material. Effectively guarantee the quality of subsequent processing.
3. Surface coating pretreatment
The smoothness of steel before coating directly affects the surface effect of coating, and laser cleaning can efficiently pretreat the surface.
In addition, in the process of electroplating, phosphating, packaging and integrated circuit assembly of industrial products, grease, dust, rust and residual solvents, adhesives and other dirt on the surface must be removed to ensure the smoothness of the next process. quality.
