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. Luoyang Fuyuan gear Machinery Co., Ltd. is the production of construction machinery, tractors and cars gear, shaft, disc-type parts based bevel gear, diversified into other products integrated manufacturing enterprises. Bevel gear this product, most of which is then used by industry, which is also known as gear bevel gear. We see this being primarily driven gear to rotate between the cross shaft and the machine. Steel bevel gears | gear industry leader Fuyuan | Luoyang Luoyang Fuyuan bevel gear by gear Machinery Co. Luoyang Fuyuan gear Machinery Co., Ltd. (www.lyfycl.com) is a leader in Luoyang, Henan Province, gear over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Fuyuan gear in leadership with the staff warmly welcome all inquiries negotiations to create a better future Fuyuan gear.