Hardness, case depth and microstructure: upper, middle, lower surface hardness of the sample was 90 ~ 91HR15N, 89 ~ 91HR15N and 89 ~ 90HR15N; upper, middle and lower samples carburized layer depth was 0.53mm, 0.47mm and 0.48mm; upper, middle and lower samples carbide are one; upper, middle and lower samples martensite and austenite are two famous bevel gear, surfaces are no more than martensite. When the new oil or grease supplement to the tooth surface, due to the tooth surface pressure for the ship to be extruded bevel gear, with the combined effect of centrifugal force of the rotary gear, leaving only a thin film on the surface of the tooth, plus to consider the role of locomotive running-gear bevel gear, so the oil must have a high viscosity or high consistency and strong adhesion to ensure a continuous film of oil remains on the surface of the gear. Above introduce you to the Fuyuan gear, you need to contact us. Ningxia ship bevel gear bevel gear _ _ inexpensive gear provided by Luoyang Fuyuan Fuyuan gear Machinery Co. Luoyang Fuyuan gear Machinery Co., Ltd. (www.lyfycl.com) strong, credible, in Luoyang gear industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Fuyuan gear into the brilliant and you work for a better future!