Jiaxing bearing small make up to introduce bearing steel and its characteristics for you

There is rotational, have HRB bearing ( ) Jiaxing bearing group sales co. , LTD. ( The company) Is bearing group co. , LTD. Established in jiaxing spot sales window, specializing in HRB brand bearings, facing the whole country, the existing stock 50 million yuan, covers the whole bearing, have very strong spot supply, is the group's retail sales center. Bearing steel is used in the manufacture of ball bearing, roller bearing ring and steel. Bearing steel is also called high carbon chrome steel, carbon content & omega; C is approximately 1%, chromium content & omega; Cr is 0. 5% - 1. 65%. Bearing steel is divided into high carbon chromium bearing steel, chromium bearing steel, carburized bearing steel, stainless bearing steel, high temperature bearing steels and anti magnetic bearing steel six categories. Bearing steel heat treatment process heat treatment and final heat treatment are two major link in advance. GCr15 steel bearing steel is the most widely used one, the content of the alloy is less and the good performance of high carbon chromium bearing steel. GCr15 bearing steel after heat treatment with high and uniform high hardness, good abrasion resistance and contact fatigue performance. 1. Annealing ( 1) Full annealing and isothermal annealing: full annealing and weighing annealing crystallization, commonly referred to as 'for annealing, is mainly used for the annealing of hypoeutectoid composition of carbon steel and alloy steel casting, forging and hot rolled profiles, sometimes used for welding structure. Generally used as a final heat treatment, some not important artifacts or as a preliminary heat treatment in some artifacts. （ 2) The spheroidizing annealing: spheroidizing annealing is mainly used for the eutectoid carbon steel and alloy tool steel ( Such as manufacturing cutters, measuring tool and die steel used in the) 。 The main purpose is to reduce the hardness and improve cutting workability, and to prepare for after quenching. （ 3) Go: stress annealing annealing (also called low temperature annealing Or high temperature tempering) , the annealing is mainly used to eliminate the casting, forging, welding parts, rolling, the residual stress of cold-drawn pieces, etc. If these stress will not be eliminated, will cause the steel after a certain period of time, or during subsequent machining deformation or cracks. 2. In order to improve the hardness of quenching method, the main form is by heating, heat preservation, rapid cooling. Is the most commonly used cooling medium brine, oil and water. Brine quenching workpiece, easy to get high hardness and smooth surface, it is not easy to produce soft point of quenching is not hard, but it is easy to make the workpiece deformation is serious, even cracking. Oil as quenching medium is only applicable to the stability of the supercooled austenite bigger some alloy or carbon steel workpiece quenching of small sizes. 3. Tempering ( 1) Reduce the brittleness, eliminate or reduce internal stress, there is a big internal stress after the steel quenching and brittleness, if not timely tempering will often result in deformation and cracking of steel. （ 2) To obtain the required mechanical properties of workpiece, the workpiece after quenching, high hardness and brittleness is big, in order to meet the requirements of different performance of various artifacts, can be tempered with appropriate to adjust the hardness, decrease the brittleness, get needed toughness and plasticity. （ 3) Stable workpiece size ( 4) For certain annealing softening hard alloy steel, the quenching ( Or normalizing) Often used after high temperature tempering, the carbides in the steel appropriate gathered themselves together, and will reduce hardness, and cutting. If you are looking for the above jiaxing bearing group co. , LTD. The author introduces the bearing inspection and replacement of interest or have any questions, please click on the website on the right side of the online customer service or call:, you close the way of jiaxing bearing purchasing advisors. - - - - - - Editor: jiaxing bearing sourcing consultant LTD. All rights reserved, The company) Reprint please indicate the source