Cold Rolled Steel Sheet and Steel Strip for Household Appliances (GB/T13790-1992)
Introduction
Cold rolled steel sheet, also referred to as cold rolled steel strip, is a steel material that has been cold processed, metallurgically treated, and thermally treated to produce a hardened product comprising of steel, non-ferrous alloys, and other metallic components. The cold rolling process involves passing steel through a series of rollers, which change the shape, size, and properties of the steel. This type of steel sheet is typically used to manufacture household appliances such as refrigerators and ovens since it is highly durable, corrosion resistant, and performs well in extreme temperatures. Cold rolled steel sheets and strips are regulated by the Chinese Standard GB/T13790-1992.
Composition
The Chinese Standard GB/T13790-1992 dictates the composition of cold rolled steel sheets and strips for the manufacturing of household appliances should contain no more than 0.02% sulfur. The yield strength and tensile strength, impurity content, and uniformity of the steel should be between specified limits. According to the standard, the thickness of the steel sheet should be between 0.10mm and 3.00mm, and the width of the steel strip should be between 12.50mm and 60mm.
Properties
Cold rolled steel sheets and strips possess a number of mechanical and physical properties, such as ductility, toughness, resistance to wear, and uniformity. Cold rolled steel sheets and strips are highly sought after due to their capability to uniformly absorb heat, providing a greater level of stability and safety for household appliances. Cold rolled steel sheets and strips are also noted for their superior corrosion resistance, making them a great choice for the production of appliances. Furthermore, the steel has a high tensile and yield strength, making it strong and durable. As a result, products made from cold rolled steel sheets and strips tend to last longer and are less likely to experience any structural damage over time.
Manufacturing Process
The cold rolling process used to produce cold rolled steel sheets and strips is a precise process that involves precise temperatures and treatments to create the desired sheet or strip. Initially, the steel sheet is heated to higher temperatures to soften the metal, followed by cooling and annealing. Afterwards, it undergoes a series of rollers to progressively reduce its thickness to the desired thickness and width. After going through the rollers, the steel sheet is then treated with a chemical solution and hardened to increase its strength and durability.
Conclusion
GB/T13790-1992 is the Chinese standard for cold rolled steel sheets and strips for the production of household appliances. The production of cold rolled steel sheets and strips involves a precise process that requires precise temperatures and treatments. Overall, cold rolled steel sheet and strip is an excellent choice for the production of household appliances since its physical and mechanical properties possess the necessary features for long-lasting performance. The corrosion resistant, uniform heat absorption, and high tensile and yield strength of the material provides increased durability for household appliances, ensuring that the products manufactured stay safe and are less likely to break down or cause damage over time.
