








Evaluate whether there are voids and inclusions in die-castings or welds, the structure orientation of die-castings, and obvious defects such as incomplete penetration in welds.

| Test Objective
Evaluate whether there are voids and inclusions in die-castings or welds, the structure orientation of die-castings, and obvious defects such as incomplete penetration in welds.
| Service Products / Fields
Cast iron, steel, non-ferrous metal parts, welded parts, etc.
|Test Steps and Standards
Sampling → Cleaning → Mounting → Grinding → Polishing → Micro-etching → Observation
GB/T 3246.2-2000 Wrought aluminum and aluminum alloys products inspection method for macrostructure
GB/T 226-1991 Etch test for macrostructure and defect of steels
| Typical Images
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Macroscopic metallographic picture of fillet weld |
Macroscopic metallographic picture of copper rod |
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Macroscopic metallographic picture of fillet weld |
Macroscopic metallographic picture of electron beam welding |
| MTT Advantages
1. Professional Team: A team of highly experienced testing engineers and technical experts.
2. Advanced Equipment: Equipped with internationally leading testing instruments to ensure accuracy and reliability of results.
3. Efficient Service: Rapidly respond to customer needs and provide one-stop, high-efficiency inspection services.
4. Authoritative Certification: The laboratory is certified by ISO/IEC 17025, ensuring that test reports have international credibility.