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Test method for interface bonding strength of coating by laser cladding repairing
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Basic data
| Standard ID | GB/T 44990-2024 (GB/T44990-2024) |
| Description (Translated English) | Test method for interface bonding strength of coating by laser cladding repairing |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | H22 |
| Classification of International Standard | 77.040.10 |
| Word Count Estimation | 14,148 |
| Date of Issue | 2024-11-28 |
| Date of Implementation | 2025-06-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 44990-2024: Test method for interface bonding strength of coating by laser cladding repairing
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 77.040.10
CCSH22
National Standard of the People's Republic of China
Test method for interface bonding strength of laser cladding repair layer
Released on 2024-11-28
2025-06-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Principle 2
5 Sample preparation 2
6 Specimen holder 2
7 Test requirements 2
7.1 Test temperature 2
7.2 Accuracy of test equipment 2
7.3 Setting the test force zero point 2
7.4 Specimen clamping method 2
7.5 Loading Speed 2
7.6 Number of test repetitions 3
8 Test results 3
8.1 Test evaluation 3
8.2 Rounding of values 3
8.3 Measurement uncertainty 3
9 Test Report 3
Appendix A (Normative) Sample preparation, sampling and dimensions 4
A.1 General requirements 4
A.2 Sample sampling method 4
A.3 Specimen size 5
Appendix B (Normative) Specimen fixture 6
References 9
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Laser Repair Technology Standardization Technical Committee (SAC/TC482).
This document was drafted by. Shenyang University of Technology, Shenyang Continental Laser Technology Co., Ltd., Xi'an Shaangu Power Co., Ltd., China Machine
Shenyang Foundry Research Institute Co., Ltd. of China Academy of Metal Research, Institute of Metal Research, Chinese Academy of Sciences, Chongqing Jianglu Laser Technology Co., Ltd., Shenyang University,
Shenyang Aerospace University, Shanghai Jiaotong University, Shanghai Institute of Electric Power, Nanjing University of Aeronautics and Astronautics, Chongqing Pump Factory Co., Ltd., China Shipping
Petrochemical Co., Ltd., Shanghai Continental Tianrui Laser Surface Engineering Co., Ltd., Yueyang Continental Laser Technology Co., Ltd., Baoshan Iron & Steel
Co., Ltd., Tai'an Quality and Technical Inspection and Testing Institute, Xiangyang Hangtai Power Machinery Factory, Jilin University, Nanchang Hangkong University, Hubei
University of Science and Technology, Anhui University of Science and Technology, State-owned Sichuan Machinery Factory, Southwest Jiaotong University, Tianjin Binhai Rex Laser Technology Development Co., Ltd.,
Shenzhen Atom Intelligent Manufacturing Technology Co., Ltd., Shenzhen Zhengtailong Technology Co., Ltd., and Chongqing Xinmeng Precision Mould Co., Ltd.
The main drafters of this document are. Zhang Song, Wu Chenliang, Zhang Chunhua, Chen Jiang, Sun Biao, Xie Huasheng, Shi Kun, Wang Wen, Yao Ge, Wang Mingsheng, Zhang Kaixiang,
He Chunlin, Zhou Song, Wang Wei, Liu Yu, Hui Li, Yang Guang, Feng Kai, Li Lei, Zhan Xiaohong, Qu Ningsong, Wang Zhaozhi, Wang Fan, Xu Min, Zhao Shen, Qian Yuxin,
Zhou Wujun, Fan Jiancheng, Zhao Jun, Lu Zhengjie, Sun Hongmei, Zhang Zhihui, Nie Minghao, Peng Xiao, Lou Deyuan, Guo Chun, Wang Leilei, Zhao Yanqiu, Gao Qiyu,
Hu Xiaoyun, Wang Juan, Xiao Jiulin, Wang Shaobo, Li Zebin, Huang Xiaohu, Mao Guiming.
Introduction
The test method of interface bonding strength of laser cladding repair layer is of great significance for evaluating the service safety and performance stability of repaired parts.
The current interface bonding strength test standard is only applicable to the interface bonding strength test of the coating and the substrate for mechanical bonding, and does not cover the interface bonding strength test of the coating and the substrate for mechanical bonding.
The surface is a metallurgical bonded laser cladding repair layer. At present, the sampling standards and test procedures used in the laser cladding repair layer interface bonding strength test are
There is no unified standard for the sequence and interface identification, which makes the service safety and service life evaluation of laser cladding repair parts lack of effective data.
According to support.
Therefore, it is urgent to formulate feasible and standardized standards to guide the interface bonding strength test of laser cladding repair layer to ensure that the test results are reliable.
The laser cladding repair layer effectively characterizes the interface bonding characteristics, reflecting the fracture behavior of the metallurgical bonded interface after repair when subjected to external force.
This document will provide support for evaluating the safety of laser melting in the engineering field.
It provides guidance for the service safety of cladding and repair parts, and lays the foundation for promoting the engineering application of laser cladding repair technology.
Test method for interface bonding strength of laser cladding repair layer
1 Scope
This document describes the test method for the interface bonding strength of the laser cladding repair layer, including the principle, sample preparation, sample fixture, test requirements,
Test results and test reports.
This document is applicable to the test of interface bonding strength of laser cladding repair layer.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 228.1-2021 Tensile test of metallic materials Part 1.Room temperature test method
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 10623 Terminology for testing mechanical properties of metallic materials
GB/T 16825.1 Inspection and calibration of static uniaxial testing machines for metallic materials Part 1.Tension and/or compression testing machines
Inspection and calibration of force measuring systems
GB/T 29795-2013 Laser repair technology terms and definitions
GB/T 29796 General technical specification for laser repair
JJG139-2014 Verification procedures for tension, pressure and universal testing machines
3 Terms and definitions
The terms and definitions defined in GB/T 228.1-2021, GB/T 10623, GB/T 29795-2013, GB/T 29796 and the following terms and definitions apply
For use in this document.
3.1
Laser cladding repair technology is used to form a surface coating on the surface of damaged parts that is metallurgically bonded to the substrate.
[Source. GB/T 29795-2013, 3.3.5, modified]
3.2
Original surface of workpiece
The surface of the substrate before laser cladding repair.
3.3
Test sample
Blanks used to prepare test specimens.
Note. The test sample and the parts have the same or similar characteristics as the laser cladding repair part, such as material, laser cladding process, and heat treatment status.
[Source. GB/T 41477-2022, 3.8, modified]
3.4
interface
The metallurgical bonding surface between the laser cladding repair layer (3.1) and the substrate.
...
