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According to the composition, it can be divided into Cr-Mn-Ni (200 series), Cr-Ni series (300 series), Cr series (400 series), heat-resistant chromium alloy steel (500 series) and precipitation hardening series (600 series). 200 series: chromium-manganese-nickel 201, 202, etc .: Manganese-nickel substitutes have relatively poor corrosion resistance, and are widely used as cheap substitutes for the
The Silica Sol casting technology belongs to investment casting, which is a casting technology with little or no cutting. It is an excellent technique in the casting industry. The quality of the processed products is high and can reach the standard of first-class castings. The biggest advantage is a high dimensional accuracy and surface
1. What is quenching? The quenching of steel is to heat the steel to a temperature above the critical temperature Ac3 (hypoeutectoid steel) or Ac1 (hypereutectoid steel), hold it for a period to fully or partially austenite, and then cool it at a rate greater than the critical cooling rate The heat treatment process
Stainless steel is the abbreviation of stainless acid-resistant steel. Steels that are resistant to weakly corrosive media such as air, steam, and water, or stainless steel are called stainless steel; and chemical-resistant media (chemical etching such as acid, alkali, salt, etc.) The type of steel is called acid-resistant steel. Ordinary stainless steel is generally not
What is stainless steel? Stainless steel is a type of steel. Steel refers to those containing less than 2% carbon (C), which is called steel, and more than 2% is iron. Adding chromium (Cr), nickel (Ni), manganese (Mn), silicon (Si), titanium (Ti), molybdenum (Mo) and other alloy elements during the smelting process of the
One-piece ball valve One-piece ball valve works by rotating the spool to make the valve unblocked or blocked. The ball valve switch is lightweight, small in size, can be made into a large caliber, reliable sealing, simple structure, easy maintenance, the sealing surface, and spherical surface are often closed, not easy
