air conditioner motor bearing

High-speed steel has good air conditioner motor bearing performance, good strength and toughness, so it is mainly used to manufacture complex thin-edged and impact-resistant metal cutting tools, as well as high-temperature bearings and cold extrusion dies.　　Performance Cutting tools made of high-speed steel are not only because of their high hardness, high wear resistance and sufficient toughness, but also an important factor that is red hardness.

Containing more alloying elements, the total amount can reach 10-25%.70 and 1. Red hardness refers to the ability of the cutting edge to resist softening under red heat during high-speed cutting. Increasing the quenching temperature can increase the red hardness of steel. High-speed steel has good process performance and good strength and toughness. According to different purposes, high-speed steel can be divided into general purpose and special purpose.

Therefore, it is mainly used to manufacture complex thin-edged and impact-resistant metal cutting tools, as well as high-temperature bearings and cold extrusion dies.70 and 1.W. According to the different alloying elements contained, it can be divided into: tungsten high speed steel (containing 9-18% tungsten); tungsten-molybdenum high speed steel (containing 5-12% tungsten and 2 to 6% molybdenum); high molybdenum high speed steel ( 0～2% tungsten content, 5～10% molybdenum content); vanadium high-speed steel, according to the difference of vanadium content, it can be divided into general vanadium content (containing vanadium 1～2%) and high vanadium content (containing vanadium 2. After quenching, it generally needs to be tempered 3 times between 540～560℃.

After quenching, it generally needs to be tempered 3 times between 540～560℃.　　High-speed steel is a complex steel with carbon content generally between 0. In order to increase the service life of high-speed steel tools, the surface can be strengthened, such as low-temperature cyanidation, nitriding, sulfur and nitrogen co-infiltration, etc. Tool steel with high hardness, high wear resistance and high heat resistance, also known as high speed tool steel or front steel. In addition to the high-speed steel produced by the smelting method, powder metallurgy high-speed steel appeared after the 1960s.

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