Characteristics of cold rolled steel coil

• Carbon steel (CQ, DQ, DDQ, EDDQ, etc.)

• Alloy steel (HSLA, high-strength steel, ultra-high-strength steel, etc.)

• There are many materials of cold-rolled plate, but its classification can be basically divided into carbon steel and alloy steel according to the two major characteristics of chemical composition and mechanical properties.

• The surface quality is good, the stamping performance is good, so it can be widely used in the automotive industry, food cans, aerospace, precision instruments and many other fields.

• Good heat resistance, cold rolled sheet processed by rolling process is generally better than ordinary sheet heat resistance.

• Good thermal reflectivity. The cold-rolled steel processed under normal temperature crystallization with processing technology has stable surface properties and can release heat well under heating conditions to protect the sheet.

Cold rolled coil is made by rolling hot rolled coil below the recrystallization temperature. Because there is no heating in the production process, there is no pitting, iron oxide scale and other defects that often occur in hot rolling, and the surface quality is good and the finish is high. The dimensional accuracy of cold-rolled products is high, and the performance and structure of products can meet some special requirements, such as electromagnetic properties and deep drawing properties. Commonly used brands are: SPCC; Timely detection; SPCE; ST12-15; DC01-06. Ganghua Steel produces various specifications of cold rolled coil, hot rolled coil, carbon steel pipe, carbon steel rod, steel rod and other high quality products. Support customization, welcome to contact us for the latest product quote!

Scope of application

• Automotive industry: Hot-rolled pickling coated plate is a new type of steel required by the automotive industry, and its better surface quality, thickness tolerance and processability can replace the body covering and auto parts produced by cold-rolled plate in the past, thereby reducing the cost of raw materials by about 10%. With the development of the economy, automobile production has also increased significantly, the amount of plate is increasing, the original design of many models of the domestic automobile industry need to use hot rolled pickling plate, such as: Car subframe, wheel spoke, front and rear axle assembly, truck box plate, protective net, automobile girder and spare parts, etc., due to the lack of supply of domestic hot-rolled pickling plate, automobile factories generally use cold plate or hot plate instead of picking themselves.

• Machinery industry: Hot rolled pickling board is mainly used in textile machinery, mining machinery, fans and some general machinery. Such as household refrigerator, air conditioning compressor shell, upper and lower cover manufacturing, power compressor pressure vessel, muffler manufacturing, screw air compressor base manufacturing. Among them, the pickling plate is the most used in household refrigerator and air conditioning compressor, which requires higher deep-drawing performance of pickling plate. The main materials are SPHC, SPHD, SPHE, SAPH370, the thickness range is 1.0-4.5mm, the required specification is 2.0-3.5mm. According to relevant data, in the first half of this year, refrigerator compressors and air conditioning compressors need 80,000 tons and 135,000 tons of hot rolled pickling plates, respectively. The fan industry now mainly uses cold rolled plate and hot rolled plate. The hot-rolled pickling plate can replace the cold plate to manufacture the impeller, shell, flange, muffler, base and platform of the blower and ventilator.

• Other industries: Other industry applications are mainly bicycle parts, all kinds of welded pipes, electrical cabinets, highway guardrail, supermarket shelves, warehouse shelves, fences, water heater water tank, barrels, iron ladder, stamping parts of various shapes, etc. With the continuous development of the economy, parts processing throughout all walks of life, processing plants mushroomed rapidly, the demand for plates increased, and the potential demand for hot-rolled pickling plates also increased.