1-20 of 63 Search Results for

dichromate sealing

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006499
EISBN: 978-1-62708-207-5
..., midtemperature, cold, and dichromate sealing. It reviews the factors that affect seal quality: immersion time, chemistry concentration, temperature, pH, water quality, coating thickness, and contaminants/dye bleeding. The article describes the various tests that are used for determining the quality of the seal...
Image
Published: 01 January 1994
Fig. 4 Sealed chrome pickle treatment. Applicable to all alloys and product forms. Used as a substitute for dichromate coating or for more protection than is provided by the chrome pickle treatment Solution No. Type of solution Constituents Amount, g/L (oz/gal) Operating temperature More
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001281
EISBN: 978-1-62708-170-2
... to achieve the optimum corrosion resistance, the amorphous aluminum oxide produced by anodizing is sealed by treating in slightly acidified hot water, boiling deionized water, a hot dichromate solution, or a nickel acetate solution. Sealing is discussed in a subsequent section of this article. Improve...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001310
EISBN: 978-1-62708-170-2
... Finishing systems applied to magnesium for various applications Systems for specific parts Aircraft auxiliary component housings, sand cast Sand blasted, sulfuric acid pickle, anodize or dichromate treatment (No. 7), epoxy sealed, baked epoxy primer, and top coat Automotive engine brackets...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003679
EISBN: 978-1-62708-182-5
... The following factors affect the formation of CCCs. Bath pH and Cr(VI) Concentration Cr(VI) speciation in coating baths is an important variable in CCC formation. Cr(VI) in solution speciates via hydrolysis and dimerization to chromate, CrO 4 2 − , dichromate, Cr 2 O 7 2...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002169
EISBN: 978-1-62708-188-7
... or in fixtures ( Fig. 1 ), and the basket or fixture containing the parts is indexed into position in line with the chamber ( Fig. 2 ). The lower closure on which parts are located is lifted by a ram and toggle, pressing it with 2200 kN (250 tonf) of force to the upper chamber and sealing the chamber. A fuel...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006521
EISBN: 978-1-62708-207-5
... for aluminum products. Coatings vary in color from gray to green and are sealed in a hot dichromate solution. Process conditions for oxide conversion coating of aluminum Table 2 Process conditions for oxide conversion coating of aluminum Process Bath composition Amount Temperature Duration, min...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004127
EISBN: 978-1-62708-184-9
... forth. Remove tape from openings sealed prior to washing. Clean all drain holes to allow proper drainage. Inspect all water accumulation areas and drain/dry as required. Lubricate in accordance with maintenance manuals to displace remaining moisture/water and allow proper operation...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003139
EISBN: 978-1-62708-199-3
... corrosion hazard, there are some notable exceptions. Magnesium-to-wood assemblies present an unusual problem because of the water absorbency of wood and the tendency of the assemblies to leach out natural acids. To protect magnesium from attack, the wood should first be sealed with paint or varnish...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003644
EISBN: 978-1-62708-182-5
...-control test for anodized and sealed aluminum alloys ( Ref 16 ). It should be noted that for unsealed or dichromate sealed samples, R po is very low. Therefore, C po does not appear in the measured spectrum in these two cases ( Ref 51 ). Fig. 14 (a) Equivalent circuit for anodized aluminum...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003065
EISBN: 978-1-62708-200-6
... gives a detailed account of production, properties and application of fiberglass, optical fibers, glass spheres and ceramic glasses, and describes the forms, classification, compositions and properties of glass/metal and glass-ceramic/metal seals. fiberglass forming glass melting glass spheres...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006511
EISBN: 978-1-62708-207-5
... For removing the thin film produced on the aluminum surface by electrobrightening, which otherwise would impair reflectivity Sodium dichromate 1.5 wt% Water 96.5 wt% Anodic post-treatments Sulfuric acid 71 wt% 23–27 (74–81) 10 12 1 (10) 4 (0.1) Colorless, transparent film Without...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003820
EISBN: 978-1-62708-183-2
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002412
EISBN: 978-1-62708-193-1
...). Such films are very porous and provide little protection in the unsealed state, but they may be sealed by immersion in a solution of hot dilute sodium dichromate and ammonium bifluoride, followed by draining and drying. A better method is to impregnate with a high-temperature curing epoxy resin (see below...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003827
EISBN: 978-1-62708-183-2
... purge of the interior of the bag is often used as a means of displacing the moisture initially present. An effective seal at the bag opening is provided by an integrally molded interlocking seal, overlapping and taping, or sealing the bag with heat. Molded foam, formed plastic foam, and contoured...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001739
EISBN: 978-1-62708-178-8
... participates. In reaction C, dichromate ions, in which chromium has the oxidation state of + VI, is reduced, gaining two electrons and forming two chromic ions, each of + III oxidation state. In reaction F, sulfurous acid, in which sulfur has a + IV oxidation state, loses two electrons and becomes sulfate ion...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003047
EISBN: 978-1-62708-200-6
..., have cost and weight benefits. Sealing and Insulating Because the adhesive in a properly prepared joint provides full contact with mating surfaces, it forms a barrier to fluids that do not attack or soften it. An adhesive may also function as an electrical and/or thermal insulator in a joint...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003221
EISBN: 978-1-62708-199-3
...) in the anodizing solution is 12 to 20 wt%. A solution containing 36 L (9.5 gal) of H 2 SO 4 per 380 L (100 gal) of solution is capable of producing an anodic coating that, when sealed in a boiling dichromate solution, meets the requirements of MIL-A-8625. A sulfuric acid anodizing solution should not be used...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001308
EISBN: 978-1-62708-170-2
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001247
EISBN: 978-1-62708-170-2