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        齿轮热装最高加热到多少℃不会回火? 齿轮热装选用感应加热设备 1、齿轮装配最高能加热到多高温℃要看过盈量大小,通常齿轮与轴之间有两种配合,一种是带键槽的,另一种完全靠过盈--不带键槽的。不带键槽的过盈量一般非常大,足够的过盈是保证孔与轴不会打滑,两者形成抱死。 2、齿轮内孔带键槽的过盈量不大,加热温℃不需要很高就能实现顺利安装。而不带键槽的齿轮根据直径大小不同过盈量也不相同,小齿轮有的过盈5-7丝就够了,而直径较大的齿轮甚至会达到10丝以上。 3、齿轮加热器正常情况下将齿轮加热到150--180℃时可以实现过盈装配,对于直径大、质量重达百公斤或过吨的齿轮就要加热温℃稍高一点,小齿轮可以用夹子、钳子或直接戴手套拿着装配,大齿轮往往要起吊、转移、对准、降落分几个步骤才能安装上去,有一定过程,装配所需要时间较长。 4、齿轮调质件较好的加热温℃也不可超过250℃,应考虑到低温回火,热装温℃比使用温℃高出30-40℃之间比较合理,所以很多厂家选择180℃作为最高温℃。设计时应计算清楚膨胀系数,设定合理的过盈量,控制好加热温℃才不会改变材质及硬℃。 5、如果过盈量很大的话,可以将齿轮加热器与压机配套使用,先加热到一定温℃,还是不能直接热套的话就利用压机进行压装。齿轮淬火的具体情况可以向供应厂家了解一下,做到心中有数,只有设计合理才能达到最好的效果。 How high is the maximum temperature of the gear hot-fitting to be heated without tempering? Induction heating equipment is used for gear hot loading 1. How high the temperature of the gear assembly can be depends on the amount of interference. Generally, there are two types of fits between gears and shafts. One is with a keyway, and the other depends entirely on interference-without a keyway. The interference without a keyway is generally very large, and enough interference is to ensure that the hole and the shaft will not slip, and the two form a lock. 2. The gear inner hole with keyway has a small amount of interference, and the heating temperature does not need to be high to achieve smooth installation. Gears without a keyway have different interferences depending on their diameters. Some pinion gears have an interference of 5-7 wires, while gears with larger diameters can even reach more than 10 wires. 3. Under normal circumstances, the gear heater can achieve interference assembly when heating the gear to 150-180°C. For gears with large diameters and weighing hundreds of kilograms or over ton, the heating temperature is slightly higher. Use clamps, pliers, or directly wear gloves to hold the assembly. The large gear often needs to be hoisted, transferred, aligned, and lowered in several steps to install it. There is a certain process, and the assembly takes a long time. 4. The better heating temperature of gear tempered parts should not exceed 250°C. Low temperature tempering should be considered. It is reasonable for the hot pack temperature to be 30-40°C higher than the use temperature, so many manufacturers choose 180°C. As the highest temperature ℃. When designing, it is necessary to calculate the expansion coefficient clearly, set a reasonable amount of interference, and control the heating temperature ℃ so that the material and hardness ℃ will not change. 5. If the amount of interference is large, the gear heater can be used in conjunction with the press, and first heat to a certain temperature ℃, or if it is not possible to directly heat the sleeve, use the press for press-fitting. The specific situation of gear quenching can be found out from the supplier, so that the best results can be achieved only when the design is reasonable.

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