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电磁脉冲回火炉,可用于高速钢、轴承铜、弹簧钢等各种钢的回火工艺、等温淬火工艺及化学热处理等。钢在电磁脉冲回火炉中回火,时间可缩短50％,机械性能明显增高,并可取消精密零件、油泵油嘴偶件等的冷处理工艺。具体试验参数:脉冲磁场强度为20～100kA/m。高速钢经脉冲磁场回火后,其工艺由常规淬火+560℃×lh×3～4次,缩短为淬火+560℃×45min×2次。残余应力由197MPa,下降为66MPa。抗弯强度υ_(bb)、冲击韧性a_k值提高30％。残余奥氏体量为2％以下。
Electromagnetic pulse tempering furnace, can be used for high speed steel, bearing copper, spring steel and other steel tempering process, isothermal quenching and chemical heat treatment. Steel tempering in the electromagnetic pulse tempering furnace, the time can be shortened by 50%, significantly increased mechanical properties, and can cancel the precision parts, such as oil pump nozzle cold treatment process. Specific test parameters: pulsed magnetic field strength of 20 ~ 100kA / m. High-speed steel after pulsed magnetic field tempering, the process by conventional quenching + 560 ℃ × lh × 3 ~ 4 times, shortened to quenching + 560 ℃ × 45min × 2 times. Residual stress from 197MPa, down to 66MPa. Bending strength υ_ (bb), impact toughness a_k value increased by 30%. The amount of retained austenite is 2% or less.