Blog #high quality PPGI prepainted galvanized steel coil

It is understood that high quality PPGI prepainted galvanized steel coil is divided into two types of products: high-strength board and deep-drawing board. Faced with the strict requirements of customers on product performance indicators, technicians take root in production lines, solve technical problems, and rely on national-level enterprise technology centers and national physical and chemical inspection centers to continuously strengthen key indicators research and experiment of automobile plate strength, forming and welding.

When producing high-strength galvanized sheet, the technicians actively docked the market on the basis of stable production of 600MPa grade dual-phase steel and developed 800MPa grade high-strength steel. When producing deep-dip galvanized automotive panels, technicians overcome the problems of high elongation and high surface quality of the products, especially the ultra-deep O5 board surface requires zero defects. The technicians specially formulated the production guarantee measures: before the production, the whole line cleaned the roll surface and carefully checked the defect source; in the production, the surface quality was checked by means of the meter; after the product was off the line, the product was manually polished and then the product was inspected to ensure the product. Surface Quality.

The company's O5 board has produced and sold more than 1,000 tons for two consecutive months, and the contract fulfillment rate has reached 100%. Automobile panels have become suppliers and service providers of many well-known automobile manufacturers at home and abroad, and the products are moving towards high-end, high-quality and brand-oriented.

The hot rolled steel coil is used as the raw material, and the oxide scale is removed by pickling, and then the cold rolling is performed. The finished product is rolled hard roll, and the cold work hardening caused by the continuous cold deformation causes the strength and hardness of the rolled hard roll to rise, and the toughness index decreases. Therefore, the punching performance will deteriorate and can only be used for parts that are simply deformed. Rolled hard rolls can be used as raw materials for hot-dip galvanizing plants because the hot-dip galvanizing units are equipped with an annealing line. The hard roll weight is generally 6~13.5 tons, and the inner diameter of the coil is 610mm.

Generally, cold-rolled rolled sheets and coils should be subjected to continuous annealing (CAPL unit) or hood furnace annealing to eliminate cold work hardening and rolling stress, and achieve the mechanical properties specified in the corresponding standards.

The surface quality, appearance and dimensional accuracy of the high quality cold rolled steel coil china are better than that of the hot rolled coil, and the thickness of the product is thinly rolled to about 0.18mm, which is favored by the majority of users. Deep processing of products with cold-rolled steel coils as a substrate has become a high value-added product. Such as electro-galvanizing, hot-dip galvanizing, fingerprint-resistant electroplating zinc, high quality PPGI prepainted galvanized steel coil and vibration-reducing composite steel plate, PVC laminated steel plate, etc., so that these products have good quality, high corrosion resistance and other excellent quality, has been widely used. Cold rolled steel coils must be finished after annealing, including cutting, tailing, trimming, leveling, leveling, rewinding, or longitudinal shearing. Cold-rolled sheet punching nets are widely used in automobile manufacturing, home appliances, instrument switches, construction, office furniture and other industries.