PHYSICAL AND MECHANICAL BASES OF ALLOYED STEEL DEFORMATION AND DISTORTION OF LARGE CASE-HARDENED GEAR WHEELS AT THE PRODUCTION AND SERVICE

Mariev P.L., Belarusian Automobile Plant, Zhodino

Moiseenko V.I., the Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republiс of Belarus

Kharitonchik D.I., Belarusian Automobile Plant, Zhodino

Tcutcurkin E.M., the Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republiс of Belarus

Shkatulo N.D., the Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republiс of Belarus

The features of accuracy ensuring at the production of large case-hardened gear wheels connected with change of their dimensions conditioned with structure transforming into chrome-nickel alloy steel at the technological treatment and service. For the first time the hypothesis about deformation of mentioned steel taking into account unknown earlier structure transformation in near border volumes of metal granules was formulated and confirmed experimentally. The recommendations concerning material selection for large case hardened gear wheels are given.

• Gudremon E. Special'nye stali [Special steel]. Moscow, Metallurgija, 1966, vol. 1, 736 p.
• Kozlovsky I.S. Himiko-termicheskaja obrabotka shesteren [Chemical heat treatment of gears]. Moscow, 1970, pp. 26–27.
• Moiseenko V.I., Mariev P.L. Osnovy strukturnoj ravnoprochnosti stali i jelementov krupnogabaritnyh detalej mashin [Fundamentals of equal strength structural steel and machine elements]. Minsk, 1999. 200 p.
• Mariev P.L. Povyshenie konstrukcionnoj ravnoprochnosti krupnogabaritnyh detalej i svarnyh uzlov kar'ernyh samosvalov [Increased structural equal strength of large parts and welded assemblies dump trucks]. Minsk, 2001. 180 p.
• Vulgakov E.B. Aviacionnye zubchatye peredachi i reduktory [Airport gears and gearboxes]. Moscow, Mashinostroenie, 1981. 374 p.