This standard specifies the requirements, test methods, inspection rules, packaging and storage of belt conveyor roller's rubber cover used in coal mine (hereinafter referred to as the “rubber cover”).
This standard is applicable to the belt conveyor metal roller’s flame-retardant rubber cover used in coal mine.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.
GB/T 528-1998 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties (eqv ISO 37:1994)
GB/T 531-1999 Rubber - Determination of indentation hardness by means of pocket hardness meters (idt ISO 7619:1986)
GB/T 3512-2001 Rubber, vulcanized or thermoplastic - Accelerated ageing and heat resistance tests - Air-oven method (eqv ISO 188:1998)
GB/T 9867-1988 Rubber - Determination of abrasion resistance using a rotating cylindrical drum device (neq ISO 4649:1985)
GB/T 15254-1994 Rubber, vulcanized - Determination of adhesion to metal - 108° peel test method (eqv ISO 8510-2:1990)
MT 113-1995 General test method and determination rules for flame retardancy and antistatic property of polymer products used in coal mines
3 Requirements
3.1 Appearance
The surface of the rubber cover shall be flat and free from surface scar, bubble, light stock and crack affecting the use.
