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《Electric Welding Machine》 2019-08
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Research on the microstructure and annealing cooling mode of bimetal hacksaw blades

WANG Jia;YANG Quanyi;WANG Juan;LIU Xiangwei;BU Mingzhe;LI Ye;JIA Yuzhen;China Petroleum Engineering and Construction North China Company;Bichamp Cutting Technology (Hu'nan) Co.,Ltd.;  
By using the large bell type annealing furnace, the influence of different annealing cooling procedures on the microstructure and hardness of hacksaw blades after the 800 ℃ temperature annealing of bimetal hacksaw blades are systematically studied. The results show that in a furnace cooling speed range of 20 ℃/h(average) and discharging temperature range of 540~650 ℃,the weld,saw teeth back material hardness and metallographic structure of bimetal hacksaw blades are not sensitive to the cooling rate and discharging temperature,which shows that the cooling mode has a large adjustment space in the annealing process of bimetal hacksaw blades.
【CateGory Index】: TG717;TG156.2
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