TB/T 1558.2-2018 in English

VALID

Non-destructive testing of welding for rolling stock - Part 2: Ultrasonic testing

Issued on:2018-08-27
Implemented on:2019-03-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $600.00
$582.00

Standard No:	TB/T 1558.2-2018
Document status:	VALID
Title in English:	Non-destructive testing of welding for rolling stock - Part 2: Ultrasonic testing
Title in Chinese:	机车车辆焊缝无损检测第2部分：超声检测
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2018-08-27
Implemented on:	2019-03-01
Superseding:	TB/T 1558.2-2010 Non-destructive testing of welding for rolling stock Part 2: Ultrasonic testing
Professional Classification:	TB-Railway Transport
Related Keywords:	non-destructive testing standard version comparisontb/t aluminum alloy welds detection technologytraditional rb-1al/rb-2al aluminum alloy test blocks acceptance levelrefer array detection technology
Related Topics:	Non-destructive testing ultrasound Non-destructive testing standards Ultrasonic testing weld seam Motor Vehicle Inspection Item 97 Test car with gram Ultrasound+ Weld non-destructive testing Methods of non-destructive testing of weld seams Weld non-destructive testing Weld detector Ultrasonic testing Non-destructive testing of fillet welds Non-destructive testing method for pipeline welds Organic monitoring Inorganic detection Requirements for non-destructive testing of various welds Motor vehicle classification detection Food organic testing and inorganic testing Inorganic chlorine detection Acoustic detection Inorganic detection analysis Motor Vehicle Detection Classification Non-destructive testing requirements for welds Organic and inorganic analysis and detection Weld non-destructive testing Non-destructive testing No damage to the weld TB/T 3474.2-2018 Ultrasonic weld inspection standards Weld air tightness testing Detection of electric welding machine tb/t3539-2018

Introduction

Interpretation of the core content of the standard

Version Comparison	TB/T 1558.2-2010	TB/T 1558.2-2018
Scope of application	Ferritic steel only	Newly added aluminum alloy welds
Detection technology	Traditional ultrasonic	Added phased array detection(Appendix B)
Test block requirements	RB-1/RB-2	Newly added RB-1AL/RB-2AL aluminum alloy test blocks
Acceptance level	Refer to GB/T 29712	Refer to the level correspondence of detailed technologies 1-4(Table 4-5)

Key technology innovation

1. Phased array detection technology: Multi-angle electronic scanning can detect complex geometric welds, and the detection efficiency is improved by 40%. Typical application case: CRRC Sifang EMU bogie weld detection.

2. Acoustic energy transmission correction: The material attenuation difference is calculated by the formula ΔV=H₁-H₂-Δ₁-Δ₂. When the loss difference is >2dB, it must be compensated.

Key points for implementation

Before testing, the CSK-IA test block must be calibrated, and the refraction angle error must be ≤2°
When testing curved workpieces, the probe matching gap must be ≤0.5mm, otherwise the bottom surface of the probe needs to be ground
Sensitivity calibration cycle: Every 4 hours or at the end of the test

Standard evolution analysis

This standard has gone through iterations from the 1984 version, the 2010 version to the 2018 version:

1984 version: Establishment of the basic detection framework
2010 version: Introduction of DAC curve technology
2018 version: Breakthrough addition of phased array detection to meet the detection needs of new materials for high-speed rail aluminum alloy bodies

More samples: GB 50021-2001(2009) JGJ 94-2008 JJG 21-2008

Sample only — not a preview of TB/T 1558.2-2018

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