Jiaxing bearing factory to introduce the rolling bearing manufacturing materials all have?

Jiaxing bearing factory as one of the three largest production base of Chinese bearing industry, annual production capacity of 80 million sets of rolling bearings, sales income is 1. 2 billion. Rolling bearing depends largely on the performance and reliability of the bearing components of materials. With the development of modern science and technology, the rolling bearing usage is increasing, and puts forward higher requirements on the bearing, such as high precision, long life and high reliability etc. , for some special purpose bearing, also requires a high temperature resistant, fight corrode, nonmagnetic, properties, such as temperature, radiation resistance. Rolling bearing steel is usually a high carbon chromium steel and carburizing steel, in addition to the above two kinds of steel, including corrosion resistance bearing steel, high temperature resistant magnetic bearing steel, bearing steel, in addition, bearing materials include bearing alloy, non-ferrous metal materials, nonmetal material etc. Jiaxing today bearing factory is mainly to introduce the high carbon chromium steel and carburizing steel two kinds of bearing material. High carbon chromium bearing steel high carbon chromium bearing steel containing chromium is 1. 30 to 1. 65% of the high carbon alloy steel, its characteristic is: the microstructure after heat treatment was homogeneous stability, high hardness and high uniformity, good abrasion resistance and contact fatigue strength, good dimensional stability and corrosion resistance. After spheroidizing annealing, its machinability is good, and the price is cheaper. This steel can satisfy the bearing of running in the general operating conditions of use requirement. High carbon chromium bearing steel is widely used all over the world, the most commonly used brand is GCr15 and GCr15SiMn, in our country, more than 80% of the total amount of bearing steel, both the performance of the steel basic same, but the GCr15SiMn steel hardenability is better than GCr15 steel, so for large size bearing parts, appropriate USES GCr15SiMn steel, high carbon chromium bearing steel is widely used in the manufacture of the rolling bearing ring and rolling body, its use range listed in table 6 - 1. GCr15 bearing steel used to make a lot of cars, tractors, tanks, aircraft, machine tools, such as the use of engine bearing motor used in the spindle bearing and railway vehicle, mining machinery, general machinery bearings. GCr15SiMn bearing steel is mainly used to manufacture large wall thickness of the bearing, such as various types of large and super large bearings, used in heavy duty machine tools and there is no bigger impact load of rolling mill's working conditions. Due to large GCr15SiMn steel crack sensitivity, impact toughness is poor, with a thick wall and impact load bearing can not completely meet the use requirements, the ministry of railways first passenger car bearing GCr15SiMn are not allowed to be used in steel is put forward, and for large wall thickness of the rolling mill bearing and mines under the condition of big bear impact load, GCr15SiMn also limit the use of steel. Has now developed GCr18SiMo and GCr15SiMo high hardenability steel, its superior performance than GCr15SiMn steel, can be in railway bearings, rolling mill bearings, mining machinery replaces GCr15SiMn on bearing steel is used. GCr15 effective wall thickness & le; 12 diameter & le; 50 diameter & le; Carburizing bearing steel carburizing steel is mainly used in the manufacture of bearing parts of low carbon steel and high quality low carbon alloy steel. Made of this kind of steel bearing parts, after carburizing, quenching and tempering heat treatment process, has the very high surface hardness, Hardness & ge; HRC60） And certain abrasion resistance and contact fatigue strength is higher, and core has good toughness, strength and hardness. Carburizing bearing steel is suitable for manufacturing work under impact load condition of the bearing and size larger bearings. In a word, the advantages of carburizing steel bearing is: 1) Keep surface compressive stress state after carburizing and quenching, good fatigue resistance. 2) Ability to withstand the impact load, the surface hardened layer has not easily expand to the internal as well as micro crack. Surface has high hardness and low core hardness ( Generally for 35 HRC ~ 40 HRC) , compared with high carbon chromium bearing steel, have the good heart of impact toughness. 3) The depth of carburizing can be according to the need to be adjusted and concentration. 4) Is not subject to restrictions on the size and wall thickness of the bearing parts. Editor: jiaxing bearing factory retail center, 01 sales consultant; All rights reserved: ) Reprint please indicate the source. This paper label: jiaxing bearing factory bearing materials