1, to control the forging temperature, not coarse grains;
2, to control the modulation quality process to ensure that quenched their core part of the organization to ensure its mechanical bearing properties;
3, IF quenching surface hardened layer depth control;
4, to avoid surface micro cracks. Wind speed gearbox input shaft is generally 10-20 rev / min, due to the relatively low speed, [1] which is leading to the input shaft slim ball bearingradial bearing carrier support bearing oil film formation is often more difficult. The role of the film is when the bearing operation to separate two metal contact surfaces, avoid direct metal to metal contact occurs. We can introduce a parameter λ to characterize the Slewing drives effect of lubricating the bearing (λ is defined as the film thickness and the roughness of the two contacting surfaces and the ratio).
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