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TB/T 1619-2010

Chinese Standard: 'TB/T 1619-2010'
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Detail Information of TB/T 1619-2010; TB/T1619-2010
Description (Translated English): Magnetic particle testing of axle for rolling stock
Sector / Industry: Railway & Train Industry Standard (Recommended)
Classification of Chinese Standard: S39
Classification of International Standard: 45.060
Word Count Estimation: 11,179
Date of Issue: 2010-12-02
Date of Implementation: 2011-06-01
Older Standard (superseded by this standard): TB/T 1619-1998
Quoted Standard: TB/T 2047.1; JB/T 8290
Drafting Organization: CSR Qishuyan Locomotive & Rolling Stock Technology Research Institute Co., Ltd.
Administrative Organization: CSR Qishuyan Locomotive & Rolling Stock Technology Research Institute Co., Ltd.
Regulation (derived from): Railway Technology (2010) 231
Summary: This standard specifies the new system locomotive axles fluorescent magnetic particle inspection of the technical requirements, inspection rules, defect assessment, inspection records and so on. This standard applies to continuous wet fluorescent magnetic particle method using the new system locomotive axles for magnetic particle inspection, rolling stock maintenance axles and axle EMU magnetic particle testing process method may also refer to this standard.

TB/T 1619-2010
TB
RAILWAY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 45.060
S 39
Replacing TB/T 1619-1998
Magnetic particle testing of axle for rolling stock
机车车辆车轴磁粉探伤
ISSUED ON. DECEMBER 02, 2010
IMPLEMENTED ON. JUNE 01, 2011
Issued by. Ministry of Railways of People’s Republic of China
Table of contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 5 
4 Technical requirements ... 6 
5 Inspection rules ... 9 
6 Defect evaluation ... 10 
7 Testing records ... 11 
Appendix A (Normative) Magnetic particle and magnetic suspension ... 12 
Appendix B (Normative) Magnetic suspension contamination measurement 14 
Foreword
This Standard was drafted in accordance with the rules in GB/T 1.1-2009.
This Standard replaces TB/T 1619-1998 "Magnetic particle testing of axle for
rolling stock". As compared with TB/T 1619-1998, the main changes are as
follows.
- MODIFY the requirements for testing personnel (see 4.1 of this version;
Clause 4 of 1998 version);
- ADD testing equipment’s functional requirements (see 4.2.3 of this version);
- ADD the magnetic suspension contamination measurement (see 4.3 of this
version);
- ADD testing environment requirements (see 4.4 of this version);
- ADD the illumination requirements for the observation area during self-
fluorescent magnetic particle testing (see 4.4.3 of this version);
- DEFINE that the rolling stock magnetic particle testing can only use
fluorescent magnetic particle testing (see 4.5, 5.1 of this version);
- MODIFY the testing sensitivity requirements (see 4.6, Clause 5.2 of 1998
version of this version);
- ADD the daily and quarterly performance inspection requirements for the
testing equipment (see 4.6 of this version);
- ADD the inspection rules (see 5 of this version);
- MODIFY the demagnetization requirements (see 6.4 of this version; Clause
7.4 of 1998 version);
- MODIFY and ADD magnetization specification equation (see 4.7 of this
version; Clause 6.4 of 1998 version);
- INCLUDE the magnetic particle and magnetic suspension’s technical
requirements into Appendix A (see Appendix A of this version);
- ADD the magnetic suspension contamination measurement method, which
is listed in Appendix B (see Appendix B of this version).
This Standard was proposed by and shall be under the jurisdiction of CSR
Qishuyan Institute Co., Ltd.
Magnetic particle testing of axle for rolling stock
1 Scope
This Standard specifies the technical requirements, testing rules, defect
evaluation, testing records, etc., of the fluorescent magnetic particle testing for
newly made rolling stock axles.
This Standard applies to the use of fluorescent magnetic particle wet
continuous method to conduct magnetic particle testing for newly made rolling
stock axles; the magnetic particle testing process for the rolling stock axle repair
and CRH axle can also refer to this Standard.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this Standard.
TB/T 2047.1 Technical specification for materials used for non-destructive
testing in railway - Part 1. Materials for magnetic particle testing
JB/T 8290 Magnetic particle flaw detectors
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Cracks
It refers to, in the process, the defects caused due to destruction of metal
continuity. During magnetic particle testing, it is generally characterized by
serrated magnetic marks, irregular pointed shape at both ends, clear contour,
AND thick & clear magnetic particle aggregation.
3.2
Hair-lines
- Axle machining parts of reassembly wheel set.
5.4 As for the testing parts, after grinding and machining, it shall be subject to
re-testing.
6 Defect evaluation
6.1 Unless otherwise specified, it shall follow the provisions of Clause 6.2 ~ 6.4.
6.2 It is not allowed for the transverse cracks, portrait cracks, or transverse hair-
lines existed on the axle surface.
6.3 As for the portrait hair-lines on the axle surface, the allowable limit is as
below.
a) Dust board seat AND wheel seat (excluding the inertia fatigue cracking
zone which is measured 30mm from the wheel seat rear shoulder to the
axle end). the single hair-line length shall not exceed 10 mm; the 2mm ~
10mm length hair-line within the 3870mm2 rectangular area shall not
exceed 10, its long side of rectangle area shall not exceed 152mm, AND
the single hair-line shall not extend to the axle shoulder.
b) The inertia fatigue cracking zone within 30mm from wheel seat to rear
shoulder. the single hair-line length shall not exceed 5 mm; the 2mm ~
5mm length hair-line within the 3870mm2 rectangular area shall not
exceed 10, AND its long side of rectangle area shall not exceed 152mm.
c) Journal. the single portrait hair-line length shall not exceed 25mm, AND
the 2mm ~ 25mm length hair-line along the entire journal surface shall be
not more than 5.
d) Axle body. the single portrait hair-line length shall not exceed 30mm, AND
the 5mm ~ 30mm length hair-line within the 2500m2 rectangular area shall
be not more than 15.
e) As for the aforementioned parts, the hair-line within same section shall be
not more than 3.
f) At each arc of the axle, it is not allowed to exist hair-line.
g) Along the same longitudinal straight line, as for the non-continuous hair-
line which exceeds 5mm of length, its total length shall not exceed 50mm.
h) On each part of axle (except for the arc portion and aforementioned
relevant provisions), if the portrait hair-line length is less than 5mm, not
Appendix A
(Normative)
Magnetic particle and magnetic suspension
A.1 Magnetic particle
The fluorescent magnetic performance shall comply with the provisions of TB/T
2047.1.
A.2 Magnetic suspension
A.2.1 Water magnetic suspension
A.2.1.1 USE the mixed solution of water and certain proportion dispersants,
anti-foaming liquid, and rust inhibitor OR dedicated carrier liquid as the carrier
liquid; the dispersants, anti-foaming liquid, and rust inhibitor, etc., from different
manufacturers shall be added based on the proportions in the product
specification. When preparing magnetic suspension, it shall firstly use a small
amount of dispersant to mix with magnetic particle; STIR it into paste form; AND
then add the remaining dispersants, anti-forming liquid, rust inhibitor, and
sufficient amount of water.
A.2.1.2 The water carrier liquid performance shall comply with the requirements
of TB/T 2047.1.
A.2.2 Oil-based magnetic suspension
A.2.2.1 USE the mixed solution of transformer oil and kerosene at a certain
percentage OR dedicated fluorescent carrier liquid as the carrier liquid. During
preparation, firstly TAKE a small amount of carrier liquid to mix the fluorescent
magnetic particle, to make the fluorescent magnetic particle totally wet; STIR it
into a uniform paste; then ADD the remaining oil-based carrier liquid; STIR it
evenly.
A.2.2.2 The performance of oil-based carrier liquid shall comply with the
requirements of TB/T 2047.1.
A.2.3 Magnetic suspension requirements
Whether it is water magnetic suspension OR oil-based magnetic suspension,
its chemical properties shall be stable, easy to clean, no corrosion against work
Appendix B
(Normative)
Magnetic suspension contamination measurement
B.1 Sampling methods
As for sampling methods and static settlement time of the magnetic suspension
test, see Appendix A.2.6.
B.2 Determination methods of contamination
B.2.1 Once one of the cases specified in B.2.2 ~ B.2.4 occurs, it indicates that
the magnetic ......
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