ДСТУ EN 15049:2022 Залізничний транспорт. Елементи підвіски. Торсіони зі сталі (EN 15049:2007, IDT)

ДСТУ EN 15049:2022
(EN 15049:2007, IDT)

Залізничний транспорт. Елементи підвіски. Торсіони зі сталі

 
 
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Symbols and abbreviations

5 Requirements

5.1 Introduction

5.2 Documents to be provided by the customer

5.3 Documents to be provided by the supplier

5.4 Design analysis

5.5 Arrangement and design

5.6 Straight torsion bar ends and connections

6 Product definition

6.1 Geometrical characteristics and space envelope

6.2 Mechanical requirements

6.3 Physical requirements

6.4 Surface protection

6.5 Characteristic moment of torsion / angular displacement

6.6 Mass

7 Mechanical properties for manufacturing

7.1 Hardness

7.2 Tensile strength

7.3 Toughness

8 Tests and test procedures

8.1 General requirements

8.2 Measuring equipment.

8.3 Tensile strength

8.4 Toughness

8.5 Hardness

8.6 Material

8.7 Depth of decarburization

8.8 Grain size

8.9 Forged torsion bar ends

8.10 Residual compressive stresses on the surface

8.11 Surface defects

8.12 Surface condition

8.13 Dimensional check

8.14 Characteristic moment of torsion / angular displacement

8.15 Mass

8.16 Internal integrity

8.17 Surface protection

8.18 Loading and allowable stresses

9 Quality assurance and final approval

9.1 Quality assurance system and staff qualification

9.2 Product qualification procedures and samples

9.3 Control and monitoring of production quality

9.4 Requirements for control and monitoring of production quality

9.5 Handling instructions

10 Marking of torsion bars

11 Packaging

Annex A (normative) Material for hot formed and quenched and tempered torsion bars

Annex В (normative) Inspection of torsion bars made of round bars by the magnetic crack detection method