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stop-off compounds

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Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005784
EISBN: 978-1-62708-165-8
... available for scale prevention in open-fired furnaces. This article describes two stop-off technologies, mechanical masking and copper plating, along with stop-off paints/compounds. Prior to the application of stop-off paints, the part surface of the furnaces should be properly cleaned and dried...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001455
EISBN: 978-1-62708-173-3
... flowing onto certain areas. Stop-offs can consist of refractory oxides, graphites, or any number of commercial compounds readily available from welding and brazing suppliers. Furnace and dip brazing operations often use stop-offs to prevent fixtures and jigs from being brazed to the work. Stop-offs...
Book Chapter

By Pel Lynah
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002154
EISBN: 978-1-62708-188-7
... motion. In this operation, the cycle was stopped so that the parts could be measured with an electrolimit gage, a visual shadow gage, or an air gage. If the desired size had not been attained, more finish lapping compound was added and lapping was continued. Lapping produced a finish of 0.050 μm (2...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006374
EISBN: 978-1-62708-192-4
... and the end use of the product. For brakes used in traditional ground vehicle and aircraft applications, brake pad/lining, drum/rotor, tire compound, and road surface are four important components to define an effective braking to stop a vehicle or an aircraft. Also, the value of the COF will vary depending...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
... for such processes as resin transfer molding and pultrusion, in which the resin must flow through preplaced glass reinforcements. For other processes, such as extra-high-strength molding compound and prepreg compression molding, the resin must be thickened by reaction to stay on the glass reinforcements. With sheet...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005285
EISBN: 978-1-62708-187-0
... the furnace molten metal. The presence of organic compounds will similarly react with the molten bath to add carbides and nitrides to the inclusion level. These suspended inclusions and oxides by themselves have a higher density than the molten aluminum but are carried to the dross layer by hydrogen gas...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005620
EISBN: 978-1-62708-174-0
... of the sheets that will later form the passageways in the heat exchanger. This is accomplished by transferring ink onto the surface by silkscreen processing. These stop-off inks contain materials such as graphite or titanium oxide. The prepared plates are placed together and temporarily joined by spot...
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
... metallic and organic compounds. Brighteners for the noncyanide baths are also proprietary products. Rough or Pitted Deposits Rough or pitted deposits should not be encountered in a well-balanced, carefully operated bath. However, if the concentration of metal is too low or the ratio of metal...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005138
EISBN: 978-1-62708-186-3
... with the four axes in the same plane and at right angles to each other, as shown in Fig. 1(a) and (b) . In operation, a coil of wire is supported in a pay-off reel; the wire is pulled through the rolls by a capstan and then recoiled. A drawbench can be used for pulling short lengths (up to 30 m, or 100 ft...
Book Chapter

Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001380
EISBN: 978-1-62708-173-3
... of solvent cleaning, chemical cleaning, and wire brushing. Next, a stop-weld pattern is reproduced on one of the sheets that will later form the passageways in the heat exchanger. This is accomplished by transferring ink onto the surface by silkscreen processing. These stop-off inks contain materials...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003018
EISBN: 978-1-62708-200-6
...), and timing of the thermoformer. Other trade-offs are limited draw ratio, loss of detail, and restriction of product shapes to wide-mouth applications. Despite these drawbacks, applications for thermoforming are almost endless, and the market is expanding. The biggest consumer of thermoformed products...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005771
EISBN: 978-1-62708-165-8
... after heat treating, or to prevent a thin area from being carburized all the way through its section, thereby becoming brittle ( Ref 3 ). Preventing carburization in selective areas can be done with mechanical masking, stop-off compounds, or copper plating (see the article “Stop-off Technologies...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005777
EISBN: 978-1-62708-165-8
.... The binding energy for each layer grows weaker toward the surface. The deformed boundary layer is formed during the mechanical treatment. The reaction layer includes metal oxides, sulfides, or phosphorus compounds. Reaction layers also are formed during phosphating. They are thin but have excellent adhesion...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006014
EISBN: 978-1-62708-172-6
...) minimum. SSPC-SP 7/ NACE No. 4 “Brush-Off Blast Cleaning” Surface shall be free of all visible oil, grease, dirt, dust, loose mill scale, loose rust, and loose coating. Tightly adherent mill scale, rust, and coating may remain on the surface. Mill scale, rust, and coating are considered tightly...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005759
EISBN: 978-1-62708-171-9
... equipment. Spray (Coating) Box A spray box has its enclosure closely fitted to the thermal spray device and part manipulation equipment. This arrangement allows the operator to load parts for coating through a door while the process is shut off, and it never requires entry onto the area where coating...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005108
EISBN: 978-1-62708-186-3
..., or coil stock. Trimming is defined as the cutting off of excess material from the periphery of a workpiece. It is usually done in dies and is similar to blanking. It is often the final operation on a formed or drawn part. The quality of blanked edges also can be improved by shaving, as discussed later...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001312
EISBN: 978-1-62708-170-2
... contamination and cold-worked layer and to produce a smooth, bright finish. Chemical Descaling Some scale, as well as forming lubricants, can be removed by proprietary water solutions of strong caustic compounds, or by the use of molten alkaline-based salt baths. The salt baths operate at temperatures...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001223
EISBN: 978-1-62708-170-2
... recovery solvent waste solvent waste disposal spray system equipment surface preparation temperature baths vapor degreasing SOLVENT CLEANING is a surface preparation process that is especially adept at removing organic compounds such as grease or oil from the surface of a metal. Most organic...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006748
EISBN: 978-1-62708-213-6
... electron peak for an ele- atomic number, primary beam energy, and sample. ment due to a change in chemical bonding take-off angle. Images formed by backscat- relative to a speci ed element or compound. tered electron detection reveal composi- astigmatism. A defect in an optical focusing Auger electron...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005134
EISBN: 978-1-62708-186-3
... curves. The workpiece is gripped at its ends and bent as it is stretched around a form ( Fig. 5 The gripped ends are customarily trimmed off. This method can accomplish in one operation what may otherwise take several operations for parts with compound curvatures or large parts with shallow curvatures...