GB/T 44990-2024 in English
VALIDTest method for interface bonding strength of coating by laser cladding repairing
- Issued on:2024-11-28
- Implemented on:2025-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$262.00
| Standard No: | GB/T 44990-2024 |
| Document status: | VALID |
| Title in English: | Test method for interface bonding strength of coating by laser cladding repairing |
| Title in Chinese: | 激光熔覆修复层界面结合强度试验方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2024-11-28 |
| Implemented on: | 2025-06-01 |
| ICS Classification: | 77.040.10-Mechanical testing of metals |
| Chinese Classification: | H22-Metal mechanical property test method |
| Professional Classification: | GB-National Standard |
| Related Keywords: | mechanical bonding interface test method tensile test method various
bonding strength test test method strength test test data |
| Related Topics: | phase interface strength
Bond strength Interface strength test phase interface strength two phase interface interface thickness Composite interface table binding strength Bond strength Cladding table binding strength alaser Interface bonding strength standard value table Interfacial bonding strength between composite layers |
《GB/T 44990-2024激光熔覆修复层界面结合强度试验方法》由TC482（全国激光修复技术标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
1. Overview of the test method for the interface bonding strength of the laser cladding repair layer
Laser cladding repair technology is an advanced surface modification technology that significantly improves the performance and life of damaged parts by forming a metallurgical bonding coating on the surface of the damaged parts. However, the existing standards are only applicable to the strength test of the mechanical bonding interface and do not cover the special requirements of the laser cladding repair layer.
2. Background and significance of standard formulation
With the rapid development of laser technology, laser cladding repair is increasingly used in the manufacturing industry. However, the lack of a unified interface bonding strength test standard makes it impossible to effectively evaluate the safety and reliability of repaired parts. The formulation of GB/T 44990-2024 fills this gap and provides an important basis for evaluating the service safety of laser cladding repair parts in the engineering field.
3. Comparison of standard frameworks
| Standard dimensions | GB/T 44990—2024 | Existing standards |
|---|---|---|
| Test scope | Applicable to interface bonding strength test of laser cladding repair layer | Limited to mechanical bonding interface |
| Test method | Tensile test method | Various non-uniform methods |
| Equipment requirements | Accuracy not less than ±1%, in line with GB/T16825.1 | No clear requirements |
4. Implementation suggestions
Case study: An automobile manufacturer used laser cladding repair technology to repair engine parts. By following this standard to conduct interface bonding strength tests, the service life and reliability of the repaired parts were significantly improved.
Implementation suggestions:
- Prepare specimens strictly in accordance with standard requirements
- Select tensile test equipment that meets the requirements
- Ensure that the test environment conditions meet the requirements
- Record and analyze all test data
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