GOST-R-51175-1998-ENG.pdf
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1、GOST R 51175-98 S T A T E S T A N D A R D O F T H E R U S S I A N F E D E R A T I O N GEAR WHEELS FOR TRACTION GEARING OF TRACTION ROLLING STOCK OF MAIN-LINE RAILWAYS SPECIFICATIONS Official Edition English Version Approved by Interstandard GOSSTANDART OF RUSSIA M o s c o w 51175-98 II Foreword 1 DE
2、VELOPED by Interstate Technical Committee for Standardization ITC 236 “Diesel locomotives and track machines“ and Scientific Research Institute of Diesel Locomotives and Track Machines SUBMITTED by Interstate Technical Committee for Standardization ITC 236 “Diesel locomotives and track machines“ 2 A
3、PPROVED AND INTRODUCED by Decree No. 243, dated 03.06.98, of Gosstandart of Russia 3 INTRODUCED FOR THE FIRST TIME Standards Publishing House, 1998 This Standard may not be reproduced, in full or in part, reprinted or distributed as an official publication without the permission of Gosstandart of Ru
4、ssia 51175-98 1 S T A T E S T A N D A R D O F T H E R U S S I A N F E D E R A T I O N GEAR WHEELS FOR TRACTION GEARING OF TRACTION ROLLING STOCK OF MAIN-LINE RAILWAYS Specifications Date of introduction 01.01.99 1 SCOPE This Standard applies to involute spur driving gears (hereinafter referred to as
5、 gears) and driven spur, helical and herring-bone gear wheels (hereinafter referred to as wheels) or built-up gear wheels rims, used in traction gearing of diesel locomotives, electric locomotives and motor-car rolling stock (hereinafter referred to as MCRS). The terms of this Standard are obligator
6、y. 2 NORMATIVE REFERENCES The following standards are referred to in this Standard: GOST 3.1109-82 ESKD (Unified System of Technical Documentation). Basic concepts terms and definitions GOST 9.014-78 ESZKS (Unified System of Protection against Corrosion and Aging). Temporary anticorrosive protection
7、 of products. General requirements GOST 12.2.003-91 OSSS (Occupational Safety Standards System). Production equipment. General safety requirements GOST 12.2.009-99. Metal-working machinery. General safety requirements GOST 12.3.002-75 OSSS. (Occupational Safety Standards System). Production processe
8、s. General safety requirements GOST 801-78 Roller-bearing steel. Specifications GOST 1497-84 Metals. Tensile test methods GOST 1643-81 Basic interchangeability norms. Cylindrical gearings. Tolerances GOST 2789-73 Surface roughness. Parameters and characteristics GOST 4543-71 Alloyed structural rolle
9、d steel. Specifications GOST 5639-82 Steels and alloys. Grain size revealing and determination methods GOST 7566-94 Rolled metal and products for further recast. Acceptance, marking, packing, transportation and storage procedure GOST 9012-59 Metals. Brinell hardness test GOST 9013-59 Metals. Rockwel
10、l hardness test GOST 9450-76 Measurement of microhardness by diamond point penetration GOST 9454-78 Metals. Impact bending test method at low, room and high temperature Official Edition Amendments Nos. 1 and 2 are inserted, approved in March 2000, January 2002 (IUS Standards Information Catalog Nos.
11、 5-2000, 5-2002) 51175-98 2 GOST 13755-81 Basic interchangeability norms. Involute cylindrical gearings. Original profile GOST 15150-69 Machinery, devices and other technical products. Modifications for various climatic regions. Categories, operating, storage and transportation conditions regarding
12、the environmental climatic factors effect GOST 16530-83 Gearing. General terms, definitions and designations GOST 19905-74 Metal products hardening by chemicothermal surface treatment. General requirements structure GOST 21105-87 Nondestructive inspection. Magnaflux method GOST R 51220-98 Gear wheel
13、s for traction gearing of traction rolling stock of main-line railways. Billets. General specifications 3 TERMS AND DEFINITIONS Terms and definitions in accordance with to GOST 3.1109 and GOST 16530 are used in this Standard. For this Standard the term “gear-wheels” means that the concepts of drivin
14、g and driven gear wheels are used simultaneously and relates to any of them. 4 TECHNICAL REQUIREMENTS 4.1 Gears and wheels shall be produced according to the requirements of this Standard pursuant to the working drawings approved in accordance with the established procedure. 4.2 Gears shall be produ
15、ced from steel of grades 203, 2024, 1224 in accordance with GOST 4543 or 4 in accordance with GOST 801. It is allowed to apply steel of grade 45 in accordance with GOST 4543 to produce the driving gears with face cogs for electric locomotives of series . 4.3 Wheels or their crowns shall be produced
16、from steel of grades 45, 303, 20, 2024 in accordance with GOST 4543. Helical wheels of electric locomotives wheel pairs made of steel 55 () under specifications 1 without thermostrengthening of working surfaces may be produced for the repair purposes and for bearing-axle drive. 4.4 The austenite gra
17、in size of casehardened steels shall be no larger than number 5 in accordance with GOST 5639. 4.5 The gears and wheels billets shall be produced by forging, hot forming, forging with rolling or hot forming with rolling in accordance with the requirements of normative documents. 4.5.1 After manufactu
18、ring the billets shall be subjected to annealing. After annealing the hardness shall be no more than 269 (indentation diameter d shall be no less than 3.7 mm in accordance with GOST 9012). Other types of thermal treatment eliminating flakes formation are allowed. 4.5.2 The wheels and gears billets s
19、hall have no flakes, cracks, contraction cavities and marked segregation, whose absence shall be the guaranteed by the billets manufacturer. 4.5.3 The gears and wheels billets produced by forging or hot forming shall comply with the requirements of GOST R 51220. 4.5.4 The gears and wheels billets pr
20、oduced by forging with rolling or hot forming with rolling shall comply with the requirements of GOST R 51220. 4.5.5 After rough machining the gear wheels billets (except for case-hardened or carbonitrided) shall be subjected to improvement (by volumetric hardening and negative hardening). It is all
21、owed to subject the billets to other type of thermal treatment providing the set mechanical properties. 4.5.6 Gear forgings made of steel 4 shall be subjected to annealing for divorced pearlite, point 2 to 4 by scale No. 8, carbide grid shall be not higher than point 3 by scale No. 4 of GOST 801. Me
22、chanical properties shall be determined on reference specimens cut from the billet heat-treated together with gears. Mechanical properties of a billet for sample are specified in table 1. -,-,- 51175-98 3 T a b l e 1 Mechanical properties, not less Billet dimensions, mm Type of billet thermal treatm
23、ent t C Point of maximum load , MPa (kgf/mm2) Yield point , MPa (kgf/mm2) Percent elongation , % Percent contraction , % Impact strength KCU, J/cm2 (kgfm/cm2) 19014060 Annealing 588 314 17 40 30 760 to 770 (60) (32) (3) 4.6 The working cogs surfaces and hollows surfaces shall be strengthened: - gear
24、s, wheels and their crows made of steel 203 or 2024 shall be subjected to chemicothermal surface treatment (case-hardening or carbonitriding). General requirements for chemicothermal treatment shall comply with GOST 19905; - gears made of steel 4, gears for electric locomotives of series with face c
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