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quenching bath maintenance

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Series: ASM Handbook
Volume: 4F
Publisher: ASM International
Published: 01 February 2024
DOI: 10.31399/asm.hb.v4F.a0007002
EISBN: 978-1-62708-450-5
... Abstract In this article, an in-depth overview of petroleum quenching oils is provided, including oil composition, use, mechanism of the oil quenching processes, oil degradation, toxicology and safety, and quenching bath maintenance. oil composition oil degradation oil quenchants oil...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005778
EISBN: 978-1-62708-165-8
... formula for estimating total case depth, and illustrates the influence of carburizing temperature, duration of carburizing, quenching temperature, and quenching medium with the aid of typical hardness gradients. The article provides information on controlling of cyaniding time and temperature, bath...
Book Chapter

By Daryl D. Peter
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001388
EISBN: 978-1-62708-173-3
... Abstract This article describes the dip brazing process and the principal types of furnaces used for molten-salt-bath dip-brazing applications. It provides information on equipment maintenance, which is divided into temperature control, control of the liquid, and maintenance of the vessel...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005776
EISBN: 978-1-62708-165-8
... and deformation Bronze, carbonitrided 1010 steel Bronze galled, deformed; steel warped 1010 steel nitrided 90 min in cyanide-cyanate bath at 570 °C (1060 °F) and water quenched (a) Shaft Resist wear on splines and bearing area Induction harden through areas Required costly inspection Nitride for 90 min...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005944
EISBN: 978-1-62708-166-5
... bismuth, and molten sodium. It also contains tables that list the physical properties of lead, bismuth, sodium, and molten sodium. molten bismuth molten lead molten sodium physical properties quenchants quenching OIL, WATER, AND POLYMER solution baths are frequently used when quenching...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005929
EISBN: 978-1-62708-166-5
... Abstract This article provides information on the salt baths used for a variety of heat treatments, including heating, quenching, interrupted quenching (austempering and martempering), case hardening, and tempering. It describes two general types of salt bath systems for steel hardening...
Book Chapter

By J.R. Keough
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005820
EISBN: 978-1-62708-165-8
...) with low dragout. However, melting points as low as 80 °C (175 °F) can be achieved with water additions up to 10% H 2 O ( Ref 3 ). Salt baths are subject to potential explosive degradation at temperatures above 600 °C (1110 °F) ( Ref 4 , 5 ). Melting in of new salt requires that the quench salts...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005802
EISBN: 978-1-62708-165-8
... cooling rate, the piece could be quenched entirely in this bath, equalized in temperature, removed and allowed to cool in air. …” To address the different M s temperatures that vary with different steels, he suggested a modification of the temperature of the salt bath used for the particular martempering...
Series: ASM Handbook
Volume: 4F
Publisher: ASM International
Published: 01 February 2024
DOI: 10.31399/asm.hb.v4F.a0007009
EISBN: 978-1-62708-450-5
... and also presents safety precautions recommended for the use of martempering oils. Finally, the article explains the effect of agitation and water in a molten salt bath. austempering marquenching martempering molten salt bath steel MARTEMPERING is a form of delayed, or interrupted, quenching...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006506
EISBN: 978-1-62708-207-5
...) Quench Severity and Cooling Rates Several material and quenchant characteristics influence the rate of heat removal from the part being quenched. An infinite quench is one that instantly decreases the skin of the part to the bath temperature. In practice, quenchants never provide an idealized...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005932
EISBN: 978-1-62708-166-5
... the quench tank are recommended to protect operating personnel and equipment from brine vapors. The material and labor costs associated with brine quenchants are higher. This is because of the costs of concentration control, preparation of solution, and raw material costs. Maintenance costs also...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005824
EISBN: 978-1-62708-165-8
..., classification, selection, and maintenance are reviewed in detail. The article addresses the various reasons for quench oil variability and complications due to aging and contamination. brine cooling flow velocity heat-transfer coefficient oil quenchants polyacrylates polyalkylene glycol polymer...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005780
EISBN: 978-1-62708-165-8
... an adequate structure and a combination of strength and ductility that promote superior drawing. Nevertheless, molten lead baths also suffer from two main disadvantages: high cost due to expensive purity lead, drag-out losses, and equipment and maintenance costs; and toxicity resulting from lead fumes...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001225
EISBN: 978-1-62708-170-2
... the complete disposal of the spent molten salt and recharge with fresh product. Molten salt bath processes require properly designed and engineered equipment for their safe operation. In most installations, it is highly desirable to have the salt bath furnace and its associated process tanks (quench water...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005958
EISBN: 978-1-62708-168-9
... Abstract This article provides a detailed discussion on the heating equipment used for austenitizing, quenching, and tempering tool steels. These include salt bath furnaces, controlled atmosphere furnaces, fluidized-bed furnaces, and vacuum furnaces. The article discusses the types of nitriding...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005773
EISBN: 978-1-62708-165-8
... Advantage Disadvantage High-temperature salt bath process Less expensive equipment Stable quality of coating Quench hardening by various methods Wide applicability regarding substrate materials, shape, and size Bath maintenance required Salt reagents must be washed off...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005923
EISBN: 978-1-62708-166-5
... measurement methods, temperature control, materials handling, and filtration processes during the agitation process. The maintenance of quenching installations is also discussed. agitators computational fluid dynamics fixtures quench tank design quenchants quenching safety precautions MUCH...
Series: ASM Handbook
Volume: 4F
Publisher: ASM International
Published: 01 February 2024
DOI: 10.31399/asm.hb.v4F.a0007017
EISBN: 978-1-62708-450-5
... of the shafts underwent a similar carburizing and quenching cycle (hold time of 33 minutes and quenching with quenchant bath temperature at 65 °C or 150 °F). Bending distortion measurements ( Fig. 3b ) were made after the shafts were cooled to room temperature. Table 1 shows the effect of hardenability...
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
.... Significant material dimensional loss can readily occur if process parameters (e.g., continued maintenance of bath chemistry, temperatures, and immersion time) are ignored. Caution should be observed when pickling bimetallic items, weldments, and components with platings or coated surfaces, because selective...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006260
EISBN: 978-1-62708-169-6
... the part being quenched. An infinite quench is one that instantly decreases the skin of the part to the bath temperature. In practice, quenchants never provide an idealized infinite quench, but with a very rapid rate of cooling at the surface, the rate of cooling in the part is then a function only...