Jiaxing bearing group co. , LTD. Small make up to introduce relevant knowledge of 45 # steel hardness

There is rotational, have HRB bearing ( ) For 45 # steel hardness of relevant knowledge, today we invite our jiaxing bearing group company engineers to introduce detailed and guidance, hope everyone can learn. 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. Commonly used in carbon quenched and tempered steels. The cold steel plastic general, annealing, normalizing is slightly better than the quenched and tempered, has high strength and good workability, cutting can be obtained after proper heat plasticity and tenacity, wear resistance, convenient material sources. Suitable for welding and argon arc welding, hydrogen is not suitable for welding. Need preheating before welding, welding shall be carried out after the stress relieving. Normalizing can improve hardness is less than 160 HBS blank cutting performance. The steel after tempering treatment, the comprehensive mechanical properties to optimize from other carbon structural steel, but the steel hardenability is low, the water critical hardening for 12 ~ 17 mm diameter, water quenching cracking tendency. When diameter greater than 80 mm, the conditioning or after normalizing, its mechanical performance, for medium and small mold parts after tempering treatment can obtain higher strength and toughness, and large parts, with normalized processing advisable, therefore, this is usually in the quenched and tempered steel or are using fire condition. Conditioning is that there is a range of hardness, generally between 225297 hb. If it is 45 # steel conditioning treatment, namely high temperature quenching + tempering, highest hardness should be 297 hb, namely 31 ~ 32 HRC! ! ! ! This is the most ideal state. The general may not reach the value. Quenching of 45 steel, if the water quenching can reach 40 - general - - - - - - - - 60 hrc ( According to the size of the water temperature and material) And oil quenching in 30 - commonly - - - (between 55 HRC According to the thickness of the material size and type of quenching oil) 。 If you are looking for engineers in jiaxing bearing group company to introduce the hardness of 45 steel knowledge interested 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