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我所最近接受了一批急需的高锰钢(Mn13)钢套(见图)的生产任务,按资料介绍在低于700℃时,其加热速度不能大于70℃/小时,否则会开裂,但这样赶不上生产的需要。我们将钢套放入820℃的中温箱式炉加热,保温1小时,再转入1100℃的高温箱式炉中加热,保温70分钟,出炉水冷,试验十件全部合格,硬度HB197,随后连续生产500多件,全部合格。
I recently received a number of urgent needs of high manganese steel (Mn13) steel sleeve (see photo) production tasks, according to the information below 700 ℃, the heating rate can not be greater than 70 ℃ / hour, otherwise it will crack, but This can not keep up with the production needs. We put the steel sleeve in the temperature of 820 ℃ in the box furnace heating, heat for 1 hour, then transferred to 1100 ℃ high temperature box furnace heating, heat 70 minutes, baked water, test all 10, hardness HB197, followed by continuous Production of more than 500 pieces, all qualified.