Metallographic weld inspection insight | Struers.com
Macro examination is commonly carried out on unmounted cross sections through welded joints, and involves cutting and coarse/fine grinding techniques. The resultant finish is adequate for etching, followed by an examination of the …
2017年12月10日 · It is important to select the correct cut- off wheel with the appropriate cutting parameters such that thermal damage of the sample is avoided. The preparation method …
When using multi-spot welding equipment, each electrode shall weld an individual test specimen as shown in Figure 1 a). For multiple weld test pieces in large sheets, welding starts from an …
- Seam Welding Macro Cut 的研究
Macrostructure of weld cross-section after etching ( a ) …
This article discusses the influence of some flux-cored arc welding process parameters such as shielding gas flow rate, weaving motion of welding electrodes, and torch angle on bead profile and...
Macro-and microstructure of seam weld. Optical image …
Download scientific diagram | Macro-and microstructure of seam weld. Optical image of weld cross-section on left. The red line indicates the approximate position of the crack plane in the...
Preparing the seam welded tensile test specimens: ( a ) …
Download scientific diagram | Preparing the seam welded tensile test specimens: ( a ) Macro etched specimen to detect seam welds; ( b ) Cutting the seam welded tensile specimens parallel...
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Single pass hybrid laser-arc welding of 25 mm thick
2016年5月5日 · Specimens for macro- and microstructural investigations were prepared by cutting across the weld seam, polished and etched with a solution of 90% ethanol + 10% nitric acid …
Weld seam inspection macroscopy / hardness progression
The weld seam inspection requires metallographic preparation using a macro microscope magnification ~ 20x: A-dimension, fusion, cracks, Vickers hardness test
Effect of heat input on macro morphology and porosity of laser …
2021年6月12日 · It is found that the cross-section area of weld seam (WS) is increased with the welding heat input. The porosity of the full-penetration WS is smaller than the partial …
For edge to edge seam welding at high speeds, conventional heat controls deliver poor performance
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