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Pinholes

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130395
EISBN: 978-1-62708-284-6
... growth  High soaking time Shrinkage  Oxidizing atmosphere Carburized microstructure  Decarburizing atmosphere Low mechanical properties  Carburizing atmosphere Blistered product  High rapid burnoff temperature Pinholes  Low rapid burnoff temperature Low sintered density  Low...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130151
EISBN: 978-1-62708-284-6
... machining process, with propagation directed to the internal diameter Fig. 19 Sample that was analyzed Fig. 12 Internal porosity formed from the surface Fig. 7 Typical morphology of a defect called a pinhole, caused by gases Fig. 1 Sharp edge elimination. (a) Sharp...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720345
EISBN: 978-1-62708-305-8
... in.); wall thicknesses range from 0.38 to 13 mm (0.015 to 0.5 in.). Tubing of intermediate and smaller diameters is produced on a draw bench. Flaws Cold Weld Contact Marks (Electrode Burns) Hook Cracks (Upturned Fiber Flaws) Weld Area Cracks Pinholes Stitching Eddy current methods...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430204
EISBN: 978-1-62708-253-2
... spots. The major one was a linear opening, whereas the minor one was a pinhole puncture. Figure 6.62(a) shows a close-up view of the outer surface of the failed screen tube sample, indicating a crack-like opening. Visual examination of the inner surface revealed corrosion damage. The entire inner...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
... corrosion damage, 200× Fig. 6.167 (a) Close-up view of the tube indicating a pinhole-size puncture surrounded by the erosion damage. (b) Inner surface view of tube-to-tube butt weld joint with weld defects and surrounding area with shallow pits Fig. 6.168 (a) Transverse cross section...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910363
EISBN: 978-1-62708-250-1
... hardening or cure of the coating Testing to ensure that defects such as pinholes, skips, or holidays are minimized or avoided Testing for adhesion, color, gloss, and other parameters that may affect the appearance or protective capability of the coating Coating inspection requires training...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900163
EISBN: 978-1-62708-350-8
... procedure, the deposited copper should be inspected to ensure it does not contain pinholes. In addition, if too much plated work is processed for short cycles through the cyanide salt bath, the copper plate will begin to strip off and go into solution with the cyanide salt. When fresh work is introduced...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780131
EISBN: 978-1-62708-268-6
... become visible under magnification or by using a fluorescent or dye penetrant inspection technique, as discussed in Chapter 11 . X-ray inspection can also be used to identify weld cracks. The weld may have a pinhole leak as a result of inadequate weld technique. (The weld may have been too hot or too...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170062
EISBN: 978-1-62708-297-6
...% 0.03% max To specification Promotes pearlitic hardenability No significant effect on nodule count or quality Tramp elements Te <0.005% 0.02% max 0.02% max Used to control pinholes Promotes spheroid degeneration in absence of rare earths Pb … 0.002% max 0.002% max Kept as low...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060247
EISBN: 978-1-62708-261-7
... and levels of some trace elements in gray cast iron Element Trace level, % Effects Aluminum ≤0.03 Promotes hydrogen pinhole defects, especially when using green sand molds and at levels above 0.005%. Neutralizes nitrogen. Antimony ≤0.02 Promotes pearlite. Addition of 0.01% reduces...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170021
EISBN: 978-1-62708-297-6
... 2 Effects, levels, and sources of some trace elements in gray iron Element Trace level, % Effects Sources Aluminum ≤0.03 Promotes hydrogen pinhole defects, especially when green sand molds are used and at levels above 0.005%. Neutralizes nitrogen Deliberate addition, ferrous alloys...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030169
EISBN: 978-1-62708-282-2
...-walled aluminum food containers, however, are coated to resist perforation ( Ref 1 ). Corrosion resistance of a material must be defined in terms of the use of the material. For example, a pinhole perforation in a thin-walled food or beverage container is a corrosion failure, whereas pits of the same...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... of inspection to castings can be divided into the following three categories: Detecting near-surface flaws such as cracks, voids, inclusions, blowholes, and pinholes (eddy current inspection) Sorting according to alloy, temper, electrical conductivity, hardness, and other metallurgical factors...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090359
EISBN: 978-1-62708-266-2
... at two of the ten large furnace-sensitized recirculation-system safe ends. Further examination revealed three pinholes and one 12.5 mm (½ in.) long axial indication, all of which were located in the HAZs of the welds. The leaking areas had been ultrasonically examined nine months prior to the hydrostatic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460107
EISBN: 978-1-62708-285-3
..., such as in situ coating repair, spraying specific regions of a component without masking, spot repair of pinholes, and scratch repair. These requirements led to the development and commercialization of the ASB 2000-2 system. Figure 4.9 shows the ASB 2000-2 system, which consists of a handheld gun, filament...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.9781627082532
EISBN: 978-1-62708-253-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220129
EISBN: 978-1-62708-259-4
... by the lines drawn over the print can be seen. Slab thickness, 250 mm (10 in.). (b) Detail of the region with small nonmetallic inclusions and “pinholes” (small bubbles) marked by the lines penciled over the print. The columnar structure can also be observed. The inclusions are in the small radius side...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610501
EISBN: 978-1-62708-303-4
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740047
EISBN: 978-1-62708-308-9
.... The binders cure at room temperature by the addition of an acid catalyst and have reaction products, such as nitrogen gas and water. The amount of binder used must usually be minimized, both for economic reasons and to limit the amount of nitrogen gas picked up in ferrous castings, where it can cause pinholes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110652
EISBN: 978-1-62708-247-1
... failures. After further stripping to the substrate, pinholes are clearly indicated by pits in the silicon surface ( Fig. 15 ), all of which are below the gate oxide. Most of the gate oxide has been stripped during the many deprocessing steps. This is clearly different from the HBM and MM failures which...