The application scope of pickled coils
Automotive Industry
Hot-rolled pickled and oiled steel sheets are new steel grades required by the automotive industry. Their superior surface quality, thickness tolerance, and processing performance can replace the body panels and automotive parts previously produced with cold-rolled sheets, thereby reducing raw material costs by about 10%. With economic development, the production of automobiles has increased significantly, and the usage of steel sheets has continuously risen. Many models in the domestic automotive industry originally designed to use hot-rolled pickled sheets, such as the subframes, wheel spokes, front and rear axle assemblies of sedans, truck box panels, protective nets, automotive frames, and various parts, have had to use cold-rolled sheets or hot-rolled sheets as substitutes or undergo self-pickling due to the insufficient supply of domestic hot-rolled pickled sheets.
Agricultural machinery motorcycles
The agricultural vehicle manufacturing industry is developing rapidly. Among them, the agricultural vehicle industry in the Shandong market has developed relatively quickly. The overall demand for cold and hot plates throughout the year is approximately 400,000 tons. Many agricultural vehicle manufacturers are willing to use pickled steel plates instead of cold plates in an effort to reduce costs. The parts that can be "replaced with heat instead of cold" mainly include the interior panels and windshields in the driver's cabin. The required specifications are mainly 0.8 - 1.5 × 1000 - 1250mm, etc. The wheel hubs of motorcycles can also use pickled steel plates. The wheel hubs of motorcycles are generally made of 2.0mm cold plates. Due to high costs and the difficulty in purchasing thick-sized cold plates, some manufacturers once switched to hot-rolled plates, but hot-rolled plates have problems with poor surface quality and are difficult to meet the needs of manufacturers. Using pickled steel plates can meet the dual requirements of users for cost and quality.
Mechanical Industry
Hot-rolled acid-washed plates are mainly used in textile machinery, mining machinery, fans, and some general machinery, etc. For example, they are used to manufacture the compressor housings and upper/lower covers of household refrigerators and air conditioners, pressure vessels and mufflers of power compressors, bases of screw-type air compressors, etc. Among them, household refrigerators and air conditioners use acid-washed plates the most, and have higher requirements for the deep drawing performance of acid-washed plates. The main materials are SPHC, SPHD, SPHE, and SAPH370, with a thickness range of 1.0 - 4.5mm. The demand specifications are the largest for 2.0 - 3.5mm. Relevant data shows that in the first half of the year, the required hot-rolled acid-washed plates for refrigerator compressors and air conditioner compressors were 80,000 tons and 135,000 tons respectively. The fan industry currently mainly uses cold-rolled plates and hot-rolled plates. Hot-rolled acid-washed plates can replace cold plates for manufacturing the impellers, housings, flanges, mufflers, bases, platforms, etc. of blowers and ventilators.
Other industries
The main applications in other industries include bicycle parts, various welding pipes, electrical cabinets, highway guardrails, supermarket shelves, warehouse shelves, fences, water heater inner tanks, barrel manufacturing, iron ladders, and various shaped stamping parts. With the continuous development of the economy, processing and assembly services have spread across various industries. Factories have sprung up rapidly, significantly increasing the demand for sheet materials, and also increasing the potential demand for hot-rolled acid-washed plates.
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