First of all, let me introduce you to cold rolled sheet, which is the abbreviation of cold rolled sheet of ordinary carbon structural steel, commonly known as cold rolled sheet. It is made of hot-rolled steel strip of ordinary carbon structural steel, which is further cold rolled into steel plate with thickness less than 4mm. Due to the fact that no oxide scale is produced when rolled at normal temperature, the cold plate has good surface quality and high dimensional accuracy. In addition to annealing treatment, its mechanical and technological properties are better than those of hot rolled steel sheet. In many fields and industries, especially in the field of household appliance manufacturing, it has gradually replaced hot rolled steel sheet.

The manufacturing industry has a great demand for the processing of cold rolled sheet. However, with the further upgrading of the processing and manufacturing industry, the processing requirements are also very high, so the choice of metal cold rolled sheet cutting machine is very limited. The blanking of traditional cold-rolled metal sheet is mainly based on punch press, but the manufacturing industry has been criticized for its poor accuracy and expensive opening.

The application of laser cutting machine has well solved the problems in the manufacturing industry. The laser cutting process uses the invisible beam instead of the traditional mechanical knife. It has the characteristics of high precision, fast cutting, not limited to cutting pattern restrictions, automatic typesetting, material saving, smooth cut, low processing cost, and will gradually improve or replace the traditional punch press stamping process.

Secondly, what kind of laser cutting machine is suitable for cold rolled sheet?

The cold-rolled sheet is mainly made of carbon steel sheet within 4mm. The optical fiber laser cutting machine has the advantage of selecting the sheet metal with high speed and low cost. Optical fiber laser cutting machine has great advantages in cutting thin plates within 4mm because it can be transmitted through optical fiber, with improved flexibility, fewer fault points, convenient maintenance and fast speed. The photoelectric conversion rate is up to 25%. The advantages of optical fiber laser in power consumption, supporting cooling system and other aspects are quite obvious.