This standard is drafted in accordance with rules in GB/T 1.1-2009.
This standard replaces TB/T 2980-2000 Technical Specification of Brake Disc for Passenger
Car. This edition includes the following main technical changes with regards to TB/T 2980-2000.
——Terms and definitions of disc body are amended (see 3.3, 3.1 in edition 2000);
——Requirements of brake disc body material, mechanical property and metallographic
structure are amended (see Table 1, Table 1 and 2 in edition 2000) ;
——Requirements of brake disc hub material and mechanical property are added (see Table 2) ;
——Requirements of brake disc interface dimension are amended (see Table 4, 4. 2. 2 in edition 2000) ;
——Requirements of applying lubricant during assembly are deleted (see 4. 4. 3 in edition 2000)
——Requirements of controlling the defect on the surface of brake disc body are amended (see 4.6.3, 4.3.3 in edition 2000)
Requirements of controlling the defect on the surface of brake disc hub are amended (see 4.6.4, 4.3.4 in edition 2000) ;
——Requirements of surface roughness are added (see 4. 10) ;
~Requirements of real mass of brake disc are added (see 4.11) ;
——Requirements of 1 : 1 dynamometer test and fatigue test of braking are added (see 4.12) ;
~Test rules of impact absorbing energy are amended (see 6.2.6, 5.5 in edition 2000)
——Requirements of quality assurance are deleted (see Chapter 6 in edition 2000) ;
——Requirements of transportation and storage are added (see 7.3)
——Requirements of qualification certificate are added (see Chapter 8) ;
——Procedures of 1 " 1 dynamometer test and fatigue test are added (see Appendix A, B, C).
This standard is proposed and managed by CSR Qishuyan Locomotive and Rolling Stock Institute Co., Ltd.
This standard is drafted by Rolling Stock Research Institute of China Academy of Railway Sciences, CSR Qishuyan Locomotive and Rolling Stock Institute Co., Ltd. and Beijing Jiaotong University.
This standard is mainly drafted by Li Jishan, Guo Libin, Li Heping, Guo Xin, Han Jianmin, Qian Kuncai, Yan Zhiqiang, Lii Huanxiao, Xu Kai, Yang Zhiyong.
This standard replaces TB/T 2980-2000, issued previously.