This standard specifies the terms, symbols and definition of coordinate system, documents to be respectively provided by the customer and the supplier, product characteristic requirements, test methods, inspection rules, marking, packaging, storage and transportation of rolling stock rubber to metal parts.
This standard is applicable to rubber to metal parts used in the suspension system, equipment installation system, connection and limit positions, etc. of rolling stocks, passenger trains, freight trains and EMU for functions such as damping, cushioning, flexible connection and limit. It may serve as reference for the rubber to metal parts of urban rolling stocks.
Note: see Annex A for common types of rubber to metal parts.
This standard is not applicable to the windshields, air springs, sealing rubber products, rubber parts of coupler bumpers, hoses and conveyor belts of rolling stocks.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 531.1 Rubber vulcanized or thermoplastic - Determination of indentation hardness - Part 1: Durometer method (Shore hardness) (GB/T 531. 1-2008, ISO 7619-1: 2004, IDT)
GB/T 533 Rubber vulcanized or thermoplastic - Determination of density (GB/T 533-2008, ISO 2781: 2007, IDT)
GB/T 1690 Rubber, vulcanized or thermoplastic - Determination of the effect of liquids (GB/T 1690-2010, ISO 1817: 2005, MOD)
GB/T 1692 Vulcanized rubber - Determination of the insulation resistivity
GB/T 2941 Rubber - General procedures for preparing and conditioning test pieces for physical test methods (GB/T 2941-2006, ISO 23529: 2004, IDT)
GB/T 3512-2014 Rubber, vulcanized or thermoplastic - Accelerated aging and heat resistance tests - Air-oven method (ISO 188: 2011, IDT)
GB/T 3672.1 Rubber - Tolerances of products - Part 1: Dimensional tolerances (GB/T 3672.1-2002, idt ISO 3302-1: 1996)
GB/T 3672.2 Rubber - Tolerances of products - Part 2: Geometrical tolerances (GB/T 3672.2-2002, idt ISO 3302-2: 1998)
GB/T 7762 Rubber, vulcanized or thermoplastic - Resistance to ozone cracking - Static strain test (GB/T 7762-2014, ISO 1431-1: 2004, NEQ)
GB/T 9867-2008 Rubber vulcanized or thermoplastic-Determination of abrasion resistance using a rotating cylindrical drum device (ISO 4649: 2002, IDT)
GB/T 10125 Corrosion tests in artificial atmospheres - Salt spray tests (GB/T 10125-2012, ISO 9227: 2006, IDT)
HG/T 3090 General rules of visual quality for moulded and extruded rubber products
3 Terms, symbols and definition of coordinate system
3.1 Terms
For the purposes of this standard, the following terms and definitions apply.
3.1.1
static creep
phenomenon that the displacement of the rubber to metal parts gradually increases with time under the action of constant static load
3.1.2
static relaxation
phenomenon that the acting force of the rubber to metal parts gradually declines with time under the action of maintaining constant deformation
3.2 Symbols
For the purposes of this standard, the symbols listed in Table 1 apply.
