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2022/06/23
Two categories of heat-treated steel strips
As the pace of modern industrialization accelerates, mechanical equipment is becoming increasingly prevalent in daily life, and the rhythm of people’s lives is quickening. Consequently, demand for dairy products, beverages, and fast‑food items is steadily rising, driving growth in the heat‑treated steel strip industry. Heat‑treated steel strips are widely used across numerous applications, enriching the market with a broader range of products and generating substantial profits for many manufacturers. These strips are suitable for die‑cutting blades, etching dies, corrosion dies, substrates for large circular saw blades, machine tool guideways, railway joint plates, and military‑grade components. At present, large‑size, high‑strength heat‑treated steel strips are entirely imported and subject to stringent export restrictions imposed by the supplying countries.
2022/06/23
Causes of Black Spots on Steel Strip Surfaces
The primary cause of black spots on the surface of cold‑rolled strip steel is insufficient removal of emulsion, which leads to the formation of such defects after annealing.
2022/06/23
Quality Characteristics of Stainless Steel
In general, the required material thickness tolerances vary depending on the type of stainless steel product. For example, Class II tableware and insulated cups typically demand tighter tolerances, around –3% to +5%, whereas Class I tableware usually calls for a tolerance of –5%, and steel pipes require –10%. For materials used in hotel refrigeration cabinets, the thickness tolerance is specified at –8%.
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