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gas-blast method

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Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003284
EISBN: 978-1-62708-176-4
... the specimen gains mass. Fig. 2 Typical dependence of erosion (defined as mass lost per unit mass of impinging particles) on impact angle (defined as the angle between the impact direction and the surface) Fig. 4 Schematic diagrams showing four classes of erosion test methods. (a) Gas-blast...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005197
EISBN: 978-1-62708-187-0
... could preheat the incoming air only 150 to 260 °C (300 to 500 °F), but even this limited additional temperature demonstrated the advantages of the preheated blast. The most successful hot blast systems have been externally fired with gas and are capable of up to approximately 650 °C (1200 °F) preheat...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006007
EISBN: 978-1-62708-172-6
... (ASTM A1055/A1055M). Courtesy of 3M, Fletcher Coating Company, and Gerdau Fig. 5 There are a number of techniques available to evaluate abrasive blast-cleaned pipe. The surface profile can be measured by either the profilometer method (ISO 8502-4) or the replica tape procedure (ISO 8502-5...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005725
EISBN: 978-1-62708-171-9
... remaining on the substrate will affect adhesion. Combinations of these methods are often used, for example, bond coats applied over grit-blasted surfaces to provide the highest bond strength, or grit blasting over macroroughened surfaces. Properly cleaned and roughened surfaces provide the critical...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001282
EISBN: 978-1-62708-170-2
..., machining, grit blasting, or chemical action. Care should be taken not to embed scale and the like in the surface when trying to remove it, particularly when using grit blasting. Solvent degreasing has been the most common method for removal of lubricants and body oils, most conveniently with vapor...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003832
EISBN: 978-1-62708-183-2
... of Steel Substrates before Application of Paints and Related Products—Surface Preparation Methods—Part 2: Abrasive Blast-Cleaning” (There are three parts.) Abrasive materials ISO 11124 “Preparation of Steel Substrates before Application of Paints and Related Products—Specifications for Metallic...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001280
EISBN: 978-1-62708-170-2
... temperatures. Oxide coatings are usually applied by the flame or plasma-arc spraying methods. Before spraying by either method, the substrate surface should be clean and rough; abrasive blasting provides a satisfactory surface condition. Sprayed coatings usually range in thickness from 25 to 2500 μm (1...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006335
EISBN: 978-1-62708-179-5
... for processing iron castings include abrasive blast cleaning (the most commonly used method for cleaning cast irons), abrasive waterjet cleaning and finishing, vibratory finishing, barrel finishing, and shot peening. Blast Cleaning Blast cleaning of castings is a process in which abrasive particles...
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
... additional steps More costly than alkaline or emulsion methods Acid cleaning Various organic acid solutions such as citric acid, acid deoxidizing solutions Light, blushing rust (storage rust from high humidity) Effective against light, blushing rust Abrasive blast cleaning...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003091
EISBN: 978-1-62708-199-3
.... The compositions of the ferritic, martensitic, austenitic, and duplex alloys are superimposed on this diagram. Fig. 2 Schematic diagram of a blast furnace showing the gas reactions as a function of temperature Fig. 22 Surface defects on semifinished products made by primary rolling of ingots...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006062
EISBN: 978-1-62708-172-6
.... This phenomenon means that the target area for effective blasting is small. Aggressive surface preparation by hydroblasting at any pressure therefore requires diligent, close-up, overlapping “brush stroke” coverage of the entire surface. This often means that production rates with this method of surface...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004213
EISBN: 978-1-62708-184-9
... of Pressure Fluctuations on Crack Propagation , Paper No. 98257, CORROSION/98 , NACE International , 1998 33. “White Metal Blast Cleaning,” NACE No. 1/SSPC-SP 5 (latest revision), NACE 34. “Near-White Metal Blast Cleaning,” NACE No. 2/SSPC-SP 10 (latest revision), NACE 35. “Control...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006337
EISBN: 978-1-62708-179-5
... gas stream, the sludge and water are deemed toxic and require further chemical treatment to neutralize the hazardous elements. This is a complex science and a materials handling challenge. Figure 6 illustrates a typical wet scrubber emission-control system connected to a recuperative hot blast...
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
... Application Methods Edge Effect Brushing Dipping/Immersion Dispensing Spraying Stamping Cleaning in Industrial Washers Shot/Sand Blasting Hand Cleaning Insufficient drying time is another leading cause of stop-off paint failures. All stop-off paints use either a solvent...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
.... In the case of cast aluminum wheels, die cast transmission cases, and so on, the process prevents leakage by healing surface porosity. Additionally, in some cases, deburring and a pleasing cosmetic surface are obtained. Methods for the handling of castings during blast cleaning depend on production volume...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003173
EISBN: 978-1-62708-199-3
... function without preheated air, the combustion reaction is enhanced by preheating the air to 540 to 650 °C (1000 to 1200 °F). The air is usually preheated using natural gas and recuperative hot blast systems that recover the heat of the exhaust gases from the cupola. Adding 1 to 4% oxygen to the blast...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001314
EISBN: 978-1-62708-170-2
...<xref rid="n0009557" ref-type="table-fn">(a)</xref> Table 2 Effect of cleaning method on relaxation of Inconel alloy X-750 springs (a) Cleaning method Relaxation (b) , % No cleaning, as age hardened 10.0 Oxidizing salt bath plus Formula 3 11.5 Tumbling in sand and oil 12.8 Abrasive blasting (120 grit with water) 13.3 Shot...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001307
EISBN: 978-1-62708-170-2
... Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Mechanical removal methods used for metallic contaminants include dry or wet abrasive blasting with metal-free abrasives, polishing with ceramic materials, and wet tumbling. The shape of a part, the required surface finish...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005715
EISBN: 978-1-62708-171-9
... associated with the grit-blasting step Tooling for holding/manipulating the part Masking for the coating process—often integrated with the tooling Stripping method Part Configuration and Coating Location Substrate Metallurgy, Structure, and Thermal History Surface Preparation Masking...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003220
EISBN: 978-1-62708-199-3
... cleaning by tumbling or blasting, and descaling in molten salt. Alkaline scale conditioning is helpful in modifying the scale to facilitate its removal by these methods. When extremely heavy oxide layers must be removed, grinding is an appropriate preliminary operation. Combinations of two or more methods...