1 Scope
This part of TB/T 1718 specifies the technical requirements of parts and components and wheelset assembly as well as the inspection, marking, painting and protection of railway rolling stock wheelsets.
It is applicable to the assembly of new wheels, new axles and new brake discs of railway rolling stocks with a maximum operating speed of less than or equal to 200km/h.
It is not applicable to the assembly of power rolling stock wheelsets and the oil-filled press assembling wheelsets.
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.
TB/T 1010 Wheelset and bearing of railway vehicles - types and basic dimensions
TB/T 1013 Carbon cast steel wheel
TB/T 2708 Technical specifications for rolled solid wheels of railway rapid passenger car
TB/T 2817 Technical specifications of rolled solid wheels of railway vehicles
TB/T 2945 Technical specifications of LZ50 steel axle and steel billet for railway vehicles
TB/T 2980 Brake disc of rolling stock
3 Technical requirements of parts and components
3.1 General provisions
The axles, wheels and brake discs shall be in accordance with the product drawings and technical documents approved according to the established procedures.
3.2 Axle
3.2.1 Axle shall comply with the requirements of TB/T 1010 and TB/T 2945 or the corresponding technical documents.
3.2.2 Grinding or rolling process may be adopted for the final processing of wheel seat (disc seat). Rolling process, where used as the final processing, may be carried out only after the upper limit of the final turning processed surface roughness Ra of the wheel seat (disc seat) reaches 3.2μm. After the grinding or rolling of wheel seat (disc seat), the upper limit of surface roughness Ra shall be1.6μm and the roundness tolerance shall be 0.02mm; the cylindricity tolerance of truck wheel seat (disc seat) shall be 0.05mm while that of passenger car wheel seat (disc seat) shall be 0.015mm; the run-out of passenger car wheel seat (disc seat) shall be 0.03mm. The large end shall be on the inner side.
Contents
Foreword i
1 Scope
2 Normative references
3 Technical requirements of parts and components
4 Technical requirements for wheelset assembly
4.1 Basic requirements
4.2 Press assembly of wheel (brake disc) and axle
4.3 Hot charging of wheel and axle
4.4 Finished wheelsets
5 Inspection
6 Marking, painting and protection
Annex A (Normative) Press assembling force curve and description of wheelset assembly
1 Scope
This part of TB/T 1718 specifies the technical requirements of parts and components and wheelset assembly as well as the inspection, marking, painting and protection of railway rolling stock wheelsets.
It is applicable to the assembly of new wheels, new axles and new brake discs of railway rolling stocks with a maximum operating speed of less than or equal to 200km/h.
It is not applicable to the assembly of power rolling stock wheelsets and the oil-filled press assembling wheelsets.
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.
TB/T 1010 Wheelset and bearing of railway vehicles - types and basic dimensions
TB/T 1013 Carbon cast steel wheel
TB/T 2708 Technical specifications for rolled solid wheels of railway rapid passenger car
TB/T 2817 Technical specifications of rolled solid wheels of railway vehicles
TB/T 2945 Technical specifications of LZ50 steel axle and steel billet for railway vehicles
TB/T 2980 Brake disc of rolling stock
3 Technical requirements of parts and components
3.1 General provisions
The axles, wheels and brake discs shall be in accordance with the product drawings and technical documents approved according to the established procedures.
3.2 Axle
3.2.1 Axle shall comply with the requirements of TB/T 1010 and TB/T 2945 or the corresponding technical documents.
3.2.2 Grinding or rolling process may be adopted for the final processing of wheel seat (disc seat). Rolling process, where used as the final processing, may be carried out only after the upper limit of the final turning processed surface roughness Ra of the wheel seat (disc seat) reaches 3.2μm. After the grinding or rolling of wheel seat (disc seat), the upper limit of surface roughness Ra shall be1.6μm and the roundness tolerance shall be 0.02mm; the cylindricity tolerance of truck wheel seat (disc seat) shall be 0.05mm while that of passenger car wheel seat (disc seat) shall be 0.015mm; the run-out of passenger car wheel seat (disc seat) shall be 0.03mm. The large end shall be on the inner side.
Contents of TB/T 1718.2-2017
Contents
Foreword i
1 Scope
2 Normative references
3 Technical requirements of parts and components
4 Technical requirements for wheelset assembly
4.1 Basic requirements
4.2 Press assembly of wheel (brake disc) and axle
4.3 Hot charging of wheel and axle
4.4 Finished wheelsets
5 Inspection
6 Marking, painting and protection
Annex A (Normative) Press assembling force curve and description of wheelset assembly
