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batch-type furnaces

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Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005957
EISBN: 978-1-62708-166-5
..., batch), and the type of energy used. An important characteristic of process heating equipment is how the load is moved in, handled, and moved out of the system. Several important types of materials-handling systems are conveyor, belts, buckets, rollers; rotary hearth furnaces; walking beam furnaces...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005787
EISBN: 978-1-62708-165-8
... and carbon steel forgings. Different combinations of annealed microstructure and hardness are significant in terms of machinability. Furnaces for annealing are of two basic types, batch furnaces and continuous furnaces. The article concludes with a description of the annealing processes for steel sheets...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003198
EISBN: 978-1-62708-199-3
...Abstract Abstract Batch furnaces and continuous furnaces are commonly used in heat treating. This article provides a detailed account of various heat treating equipment and its furnace types, including salt bath equipment (externally heated, immersed-electrode and submerged-electrode furnaces...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005529
EISBN: 978-1-62708-197-9
... Radiant heat exchange between two objects Fig. 3 Car-bottom batch furnace for homogenizing large cylindrical parts. Courtesy of Despatch Industries, Inc. Fig. 4 Vertical cylinder-type batch furnace. Source: Ref 1 Fig. 5 Horizontal cylinder-type batch furnace. Source: Ref 8...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001386
EISBN: 978-1-62708-173-3
... brazing and reviews three types of furnaces: continuous, semi-continuous, and batch. It presents three examples of the industrial applications of the furnace brazing: vacuum devices, jet engines, and automotive industries. The health and safety guidelines to be followed during the furnace brazing are also...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006276
EISBN: 978-1-62708-169-6
...) coppers compared to oxygen-free (OF) copper and copper-zirconium alloy Fig. 10 Continuous conveyor furnace for heat treating copper alloys in a controlled atmosphere Fig. 9 Types of annealing. (a) Continuous. (b) Batch Fig. 3 Effect of cold rolling on the strength, hardness...
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
... spheres glass-ceramic/metal seals glass/metal seals grinding optical fibers polishing THE LARGE MAJORITY of the commercially important glasses are processed from a carefully calculated batch of raw materials that is then melted in special furnaces. There are various types of melting units used...
Book Chapter

Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005783
EISBN: 978-1-62708-165-8
... is held at the normalizing temperature for only 1 h. Normalizing of large open-die forgings usually is performed in batch-type furnaces pyrometrically controlled to narrow temperature ranges. Forgings are held at the normalizing temperature long enough to allow complete austenitizing and carbide...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005799
EISBN: 978-1-62708-165-8
... retention and overall control of the process. H 2 levels higher than 3% above nominal carrier gas composition indicate insufficient carrier gas flow. Hydrogen-diluted atmospheres are characterized by CO levels below nominal carrier gas levels and contain higher free-methane levels. In batch furnaces...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003197
EISBN: 978-1-62708-199-3
... techniques of 0.2 mm (0.008 in.) or less. This requires equipment specifically designed for the parts being tested. See the Section “Nondestructive Testing” in this Handbook for more detailed information on eddy current testing and equipment. The most common types of batch furnaces are pit furnaces...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003210
EISBN: 978-1-62708-199-3
... that they will not discolor when exposed to air, usually to about 150 °C (300 °F). Brazing Furnaces Furnaces used for brazing are classified into four groups: (1) batch type, with either air or controlled atmospheres, in which workpieces are loaded and unloaded manually; (2) continuous type, with either air...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005928
EISBN: 978-1-62708-166-5
... below the dewpoint, steam tracing or electrical heating of the sample line is required. Procedures and Precautions Before a gas sample is taken from a batch-type furnace without a charging vestibule or from a continuous furnace from startup, enough time should be allowed for purging...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006333
EISBN: 978-1-62708-179-5
... the graphitization process. Melting can be accomplished by batch cold melting or by duplexing. Cold melting is done in coreless or channel-type induction furnaces, electric arc furnaces, or cupola furnaces. In duplexing, the iron is melted in a cupola or electric arc furnace, and the molten metal is transferred...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005920
EISBN: 978-1-62708-167-2
... on tonnage of output, but rather on hundreds of kilograms, which can be achieved via induction heating. For research and development work in glass melting and forming, induction systems provide flexibility that other types of furnaces do not. One benefit of using induction heating as opposed...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003196
EISBN: 978-1-62708-199-3
... conditions of use for four types of tempering equipment Table 7 Temperature ranges and general conditions of use for four types of tempering equipment Type of equipment Temperature range Service conditions °C °F Convection furnace 50 to 750 120 to 1380 For large volumes of nearly...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006141
EISBN: 978-1-62708-175-7
... Consolidation Types of Furnaces, Sintering Atmospheres, and Fixtures It is preferred that MIM parts are produced without any secondary operations. However, in a significant number of cases, MIM parts are subjected to postsinter secondary operations. The reasons for these secondary operations are quite...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001345
EISBN: 978-1-62708-173-3
... and clearance, temperature and time, rate and source of heating, and protection by an atmosphere or flux. The article explains the different types of brazing processes: manual torch brazing, furnace brazing, induction brazing, dip brazing, resistance brazing, infrared (quartz) brazing, exothermic brazing...
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 time varies with the mass and density of the charge, the maximum section thickness of the workpiece, and the ambient air temperature. Usually, production loads of 365 to 815 kg (800 to 1800 lb) from either continuous or batch-type furnaces will require 2 1 2 to 5 h to reach room...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005911
EISBN: 978-1-62708-167-2
... oxide electrodes generated development of a mixed melting technology by heating the molten bath below the glass surface electrically and burning fuel to melt the batch above the glass surface. There are a number of different types of melting furnaces for glass production, depending on volume, glass...
Book Chapter

Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005765
EISBN: 978-1-62708-165-8
... medium, compounds, furnaces, and containers used in pack carburizing. The successful operation of the pack carburizing process depends on the control of principal variables such as carbon potential, temperature, time, case depth, and steel composition. The three types of furnaces most commonly used...