1、电动葫芦软齿面齿轮 较齿面齿轮的齿面硬度350HBS，常用中碳钢和中碳合金钢，如45钢、40Cr，355iMn等材料，进行调质或正火处理。这种齿轮适用于强度、精度要求不高的场合，轮坯经过热处理后进行插齿或滚齿加工，生产便利、成本较低。 2、硬齿面齿轮 硬齿面齿轮的齿面硬350HBS,常用的材料为中碳钢或中碳合金钢经表面淬火处理，硬度可达40-55HRC.若采用低碳钢或低碳合金钢，如20钢、20Cr、20CrMnTi等，需渗碳淬火，其硬度可达56-62HRC。热处理后需磨齿，如内齿轮不便于磨削，可采用渗氮处理(采用这种方法，在处理过程中齿的变形较小)。 1. The hardness of the soft tooth surface gear of the electric hoist is 350HBS compared to the tooth surface gear, and the medium carbon steel and the medium carbon alloy steel, such as 45 steel, 40Cr, 355iMn and so on, are tempered or normalizing. This kind of gear is suitable for occasions where the strength and accuracy are not very high. The wheel blanks are processed by gear shaping or hobbing after heat treatment, and the production is convenient and the cost is low. 2. Hard face gear teeth face gear teeth hard 350HBS, common material for medium carbon steel or medium carbon alloy steel surface quenching treatment, the hardness can reach 40-55HRC. if low carbon steel or low carbon alloy steel, such as 20 steel, 20Cr, 20CrMnTi and so on, the need to carburized quenching, its hardness up to 56-62HRC. After heat treatment, gear grinding is needed. For example, internal gear is not easy to grind, and nitriding can be used.