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钢锉
 新闻资讯 =>  

T澳门新葡亰游戏平台appA钢制锉刀(钢锉)热处理新工艺

发布日期:[2018-10-25]    共阅[1466]次
    锉刀刃都要求高的硬度和耐磨性,在齿尖以下淬硬深度要求
>1mm。齿部应无脱碳层,柄部硬度< 35HRC,热处理后的畸变要求
100mm长度上<0.1mm。为防止锉刀淬火加热时的氧化脱碳,过去一
般在含有黄血盐的盐浴中加热,盐浴成分(质量分数)为:35%黄
血盐+15%碳酸钠+50%氯化钠。这种工艺为锉刀的发展做出了很大
贡献,但由于盐浴对环境有污染,目前日趋淘汰。现在已应用高
频感应加热和流态床通保护气氛加热工艺方法。锉刀的淬火工艺
为760~800℃加热,水淬。由于锉刀柄部硬度要求较低,因此在淬
火时只将有齿部分放入水中淬火,待柄部颜色变成暗红色时再淬
柄。锉刀在水中冷却到200℃左右时,取出在水槽边手工校直。操
作者只要准确掌握锉刀的出水时机,校直不成问题。
The blade of the file requires high hardness and wear
resistance, and the hardening depth below the tooth tip
is >1mm. The tooth should have no decarburization layer,
the hardness of the handle is < 35HRC, and the distortion
after heat treatment requires 100mm length <0.1mm. In
order to prevent the oxidative decarbonization of the
file during quenching and heating, it used to be heated
in a salt bath containing yellow blood salt. The salt
bath composition (mass fraction) was: 35% yellow blood
Salt + 15% sodium carbonate + 50% sodium chloride. This
technology has made a great contribution to the
development of the file, but because of the salt bath
pollution to the environment, it is gradually eliminated.
High frequency induction heating and fluidized bed
protection atmosphere heating technology has been
applied. The quenching process of the file is heated at
760~800 C and water quenched. Because of the lower
hardness requirement of the handle of the file, only the
teeth are quenched in water when quenching, and then the
handle is quenched when the color of the handle becomes
dark red. When the file is cooled to about 200 degrees in
water, it is removed by hand and straightened at the edge
of the sink. As long as the operator accurately grasps
the timing of the effluent, straightening is not a
problem.
锉刀通常在160~180℃的硝盐中回火1h,回火后齿部硬度
≥64HRC。
The file is usually tempered at 1h of 160~180 degree
nitrate, and the hardness of the gear is more than 64HRC
after tempering.
 

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