摘  要

盐浴炉是用熔融盐液作为加热介质、将工件浸入盐液内加热的工业炉。根据炉子的工作温度，通常选用氯化钠、氯化钾、氯化钡、氰化钠、氰化钾、硝酸钠 、硝酸钾等盐类作为加热介质。盐浴炉的加热速度快，温度均匀。工件始终处于盐液内加热，工件出炉时表面又附有一层盐膜，所以能防止工件表面氧化和脱碳。盐浴炉可用于碳钢、合金钢、工具钢、模具钢和铝合金等的淬火、退火、回火、 氰化、 时效等热处理加热，也可用于钢材精密锻造时少氧化加热。盐浴炉加热介质的蒸气对人体有害，使用时必须通风。盐液温度依盐液成分而不同,一般在150～1300℃之间。磁场的作用能使盐液循环翻动,有利于盐液温度均匀,又能提高工件的加热速度。由于温度超过人体所能承受的范围，必须要有一套装置来完成淬火要求。
关键词：盐浴炉，加热介质，淬火装置

Abstract

Salt bath furnace with molten salt solution as the heating medium, the workpiece to be immersed in salt solution for heating furnace. According to the operating temperature, usually using sodium chloride, potassium chloride, barium chloride, sodium cyanide, potassium cyanide, sodium nitrate, potassium nitrate salts as heating medium. Salt bath furnace heating speed, temperature uniformity. The workpiece is always in a salt solution within the heating, the workpiece surface and released when accompanied by a layer of salt film, thereby preventing the surface oxidation and decarbonization. Salt bath furnace can be used for carbon steel, alloy steel, tool steel, die steel and aluminium alloy quenching, annealing, tempering, cyanide, and aging heat treatment heating, can also be used for precision forging and less-oxidatien heating. Salt bath furnace heating medium steam is harmful to the human body, must be used with ventilation. Salt solution temperature in salt solution composition and different, generally between 150 ~ 1300 ℃. The effect of magnetic field can make salt liquid circulating shift, the benefit of salt liquid temperature uniformity, but also can improve the heating speed of workpiece. Because of the temperature exceeds the human body can bear the scope, we must have a device to complete the quenching requirements.
Key Words:salt bath furnace, heating medium, quenching device
目  录