TB/T 2487-2016Test method for dynamic stress of subgrade (English PDF)

Foreword

The method of testing for wheel surface defect specified in this Standard is equivalent

to that specified in ISO 6933. 1986 "Railway Rolling Stock Material - Magnetic Particle

Acceptance Testing".

The formulation of TB/T 2817-1997 "Technical Specifications for Integral Steel Wheel

of Railway Rolling Stock" is equivalent to UIC 812-3 "Technical Specifications of

Delivery of Integral Unalloyed Steel Wheels for Railway Rolling Stock"; it only specifies

magnetic particle test on wheel web. In recent year, wheel cracks occur more frequently,

especially on wheel rim, while the high speed heavy-load trains develop. Therefore,

this Standard specifies the defect testing positions on wheel rim and web. Magnetic

particle test for wheels shall comply with the relevant requirements of this Standard.

This Standard was proposed by Qishuyan Railway Rolling Stock Process Institute.

This Standard is under the jurisdiction of Qishuyan Railway Rolling Stock Process

Institute.

Chief drafting organizations of this Standard. Qishuyan Railway Rolling Stock Process

Institute AND Metals and Chemistry Research Institute of the Ministry of Railways

Academy of Science.

Participating organizations of this Standard. Qishuyan Railway Rolling Stock Process

Institute, Puzhen Railway Rolling Stock Co., Ltd. AND Qiqihar Railway Rolling Stock

Co., Ltd.

Chief drafting staffs of this Standard. Huang Yongwei, Li Lianxiu, Gao Jinsheng, Xie

Ning and Peng Shanbai.

This Standard is issued for the first time.

Railway Rolling Stock Wheel –

Magnetic Particle acceptance Testing

1 Scope

This Standard specifies a method for detection by means of magnetic particle

acceptance testing of new railway roiling stock wheel.

This Standard is applicable to magnetic powder test for surface defects on new railway

rolling stock wheel rim and web.

2 Normative Reference

The provisions of the following standards, through reference by this Standard,

constitute the provisions of this Standard. When this Standard is published, the editions

indicated are valid. All standards are subject to revision. The parties concerned are

encouraged to study the possibility of applying the latest editions of the following

standards.

TB/T 2047-1996 Technical Specifications for Non-fluorescent Magnetic

Particles of Magnetic Particle Test for Railway Rolling Stock

TB/T 2600-1996 Technical Specifications for Fluorescent Magnetic Particles of

Magnetic Particle Test for Railway Rolling Stock

JB/T 8290-1998 Magnetic Particle Detector

JJG (railway)

155-1995

Magnetic Particle Detector

3 Personnel Requirement

8 Demagnetization

The remanence shall not be greater than 7×10-4T.

9 Acceptance

The surface to be inspected shall not have crack; non-crack defect shall not exceed

6mm.

10 Inspection

The inspection report shall include the following information.

a) The date of inspection;

b) The place of inspection;

c) Symbols for product and material, e.g. name, number, drawing number, heat

number and quantity of product and material;

d) Inspection conditions.

1) Inspection device (name, model, manufacturer);

2) Magnetization method;

3) Characteristics of magnetic particles (manufacturer, quantity);

4) Carrier liquid;

5) Method of magnetic particles application;

6) Method of sensitivity setting (test piece name or other method).

e) The inspection conclusion.

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