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

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Research on the microstructure and annealing cooling mode of bimetal hacksaw blades
Vol. 49, Issue 8, Pages: 99-103(2019)
Published：2019
DOI：
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DOI：

WANG Jia, YANG Quanyi, WANG Juan, et al. Research on the microstructure and annealing cooling mode of bimetal hacksaw blades[J]. Eletric Welding Machine2019, 49(8): 99-103. DOI：

摘要

采用大型钟罩式退火炉

研究双金属带锯条焊后800℃温度退火后

不同的退火冷却工艺对带锯组织及硬度的影响。结果表明

在20℃/h(平均)随炉冷却的速度范围内以及出炉罐温度在540～650℃范围内

双金属带锯条焊缝、齿背材硬度和金相组织均对冷却速度和出炉温度不敏感

说明双金属带锯在退火过程中的冷却方式有较大的调整空间。

Abstract

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.