Mss Sp-55 Standard Pdf !!top!! -

Visual inspection is faster and cheaper than volumetric NDT, making it ideal for routine casting checks.

– Unfused metal supports left visible on the component wall.

Defining acceptable vs. unacceptable surface irregularities via visual inspection. mss sp-55 standard pdf

– Metal supports used to hold internal cores in place; the standard evaluates whether they have properly fused into the casting wall. The Reference Photographs and Evaluation Method

: For each category, the standard presents five visual examples. The two examples on the left illustrate acceptable surface conditions, while the three examples on the right depict unacceptable defects that require rejection or weld repair. Visual inspection is faster and cheaper than volumetric

Beware of free, unofficial downloads, as they may contain low-resolution images, making the visual inspection process (the very purpose of the standard) impossible. Conclusion

– Rounded voids caused by trapped gas evolved from the molten metal or mold. unacceptable surface irregularities via visual inspection

MSS SP-55 solved this problem by creating a standardized visual method supported by reference photographs. These images allow inspectors to compare an actual casting surface directly against accepted benchmarks, establishing a clear, repeatable pass-fail criterion.