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我厂生产的一吨翻斗车圆锥被动齿轮(图1)技术要求是:18CrMnTi渗碳,渗层0.9～1.3毫米,表面硬度HRC58～64,心部硬度HRC30～48,不平度要求内端≤0.20毫米,外端0.1毫米。原来齿轮渗碳后在盐浴炉中加热,加热后用水爆盐,在淬火压床上淬火。由于水爆盐的影响因素多,工艺不易控制,经常出现硬度低、内孔胀大、不平度超差等废品。为提高产品质量、改善劳动条件,改盐浴炉加热为
The technical requirements for one ton of cone driven gear of dump truck produced by our factory are as follows: 18CrMnTi carburizing, infiltration layer 0.9 ~ 1.3mm, surface hardness HRC58 ~ 64, core hardness HRC30 ~ 48, roughness requirement inner end ≤0.20 Mm, the outer end of 0.1 mm. After the original gear carburizing in the salt bath furnace heating, heating salt water after quenching quenching on the press. Due to the influence factors of water explosion salt, the process is not easy to control, often appear low hardness, inner hole swollen, unevenness and other bad products. To improve product quality, improve working conditions, change the salt bath furnace heating