Raw material quality inspection

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Quality inspection of raw materials often involves the following aspects: Dimension inspection: length, width, and height; in many cases, thickness is the key factor. Visual inspection: No obvious pitting, corrosion, layering, etc. Chemical composition testing: 1. Chemical reagent method: Carbon-sulfur analyzer – the most traditional approach, which relies on direct chemical reactions for determination. 5. Element analyzer: Relatively simple; quantitative amounts of raw materials are placed into a specific instrument. 2. Spectral analyzer: Determines the element content through a local combustion reaction, and requires specialized instruments for this purpose. Testing of mechanical properties: mainly the testing of tensile strength. Hardness testing: Measured using a hardness tester. Microstructure analysis: Phase analyzer. Internal defect detection: Non-destructive testing equipment