A soft aluminium test piece is to be penetrant tested. The piece has previously been sand blasted to remove tightly adhering soils. What additional surface preparation should be performed?

Related MCQs

• When using a post emulsifiable penetrant process, it is important to drain as much excess penetrant as possible from the surface of a test piece which has been immersed in the penetrant because:
• What additional surface preparation or cleaning must be performed on a machined or ground aluminium casting prior to penetrant testing?
• Cracks, lack of penetration, lack of fusion which are surface breaking on a welded aluminium plate which has been liquid penetrant tested will show as:
• Surface breaking porosity will show what type of relevant indications when a welded aluminium plate is tested with the liquid penetrant method:
• When using a straight beam technique to examine a thick test piece what change(s) would you expect to see in back wall echo size as you approach the side of the test piece? (Transducer remains completely on test piece)
• When performing a post emulsifiable penetrant test, the test piece does not rinse acceptable clean during normal processing. What should be done?
• For adequate test results, the black light used in fluorescent penetrant examination should provide what minimum black light intensity at the test surface?
• The reverse magnetising force necessary to remove a residual magnetic field from a test piece after it has been magnetically saturated is called:
• What is the likely result of incomplete removal of all excess penetrant from the test piece surface?
• The time period during which penetrant remains on the surface of the test piece is called: