1-20 of 232 Search Results for

convection furnace

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
Image
Published: 01 November 1995
Fig. 2 Major convection flows in a fuel-fired tank furnace (longitudinal vertical section on tank centerline) More
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005815
EISBN: 978-1-62708-165-8
.... The article discusses the embrittlement problems associated with tempering. Four types of equipment are used for tempering, namely, convection furnaces, salt bath furnaces, oil bath equipment and molten metal baths. Special procedures for tempering are briefly reviewed. cracking dimensional change...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005992
EISBN: 978-1-62708-166-5
... are the most highly alloyed tools steels. For high-speed in hardening temperature, total time is allowed at 4 to 6 minutes per inch of thickness but never long enough to “blister”. Tempering Tempering may be performed in convection furnaces, salt baths or even by immersion in molten metal. Induction...
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
... Abstract This article provides information on the heat-source model, conduction heat-transfer model of parts and fixtures, and the radiation heat-transfer and convection heat-transfer models in a furnace. It describes the two types of furnaces used for heat treating: batch furnaces...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006135
EISBN: 978-1-62708-175-7
... Abstract Sintering atmosphere protects metal parts from the effects of contact with air and provides sufficient conduction and convection for uniform heat transfer to ensure even heating or cooling within various furnace sections, such as preparation, sintering, initial cooling, and final...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005898
EISBN: 978-1-62708-167-2
.... Estimating the relationship between thermal and electromagnetic convection intensities is very important for correct modeling and flow pattern analysis in induction furnaces (ICF, CIF, IFCC, etc.). The most general expression for electrical current density J in Eq 87 is: (Eq 88) J = σ E...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005927
EISBN: 978-1-62708-166-5
... is the primary cause of high-efficiency heat transfer in fluidized-bed heat treatment furnaces. The heat transfer between gas bubbles and solid surfaces is by convection. Radiative heat transfer occurs between fluidized particles and chamber walls and part surfaces at high temperatures. Heating Rate...
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
... austempering convection furnace cooling curve maraging steels martempering molten metal bath normalizing powder metallurgy steels quenching salt bath furnace spheroidizing steels stress relieving tempering time-temperature transformation transformation curve ultrahigh-strength steels Stress...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001395
EISBN: 978-1-62708-173-3
... Abstract Furnace soldering (FS) encompasses a group of reflow soldering techniques in which the parts to be joined and preplaced filler metal are put in a furnace and then heated to the soldering temperature. This article describes three reflow soldering techniques in surface-mount technology...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005350
EISBN: 978-1-62708-187-0
... temperatures. The high heat flux generated by direct radiation at the bath surface is typically much greater than conductive and natural convective forces, which distribute the heat through the bath. In turn, surface oxidation and dross formation ensue. There are two types of gas reverberatory furnace...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005907
EISBN: 978-1-62708-167-2
... Abstract This article provides an overview of the models of two induction heating devices, namely, induction crucible furnace (ICF) and induction furnace with slits, or segmented and water-cooled induction furnace with cold crucible (IFCC). These devices are used for melting with skull...
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
... temperature, and minimize the amount of time required at the high-temperature stage. Preheating usually starts in convective air furnaces, followed by two preheating salt baths ( Fig. 1 ). The high-temperature salt bath serves as the final austenitizing step. Typical temperatures for these different steps can...
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
... methods use one of these three methods to heat a heating element and transfer the heat either by conduction, convection, radiation, or a combination of these to the workpiece. Vacuum furnaces are built with internal vacuum chambers to prevent the part from reacting with the air or atmosphere...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005228
EISBN: 978-1-62708-187-0
..., that is, buoyancy-driven, melt convection. The results of solidification and single-crystal growth are often assessed through the as-cast structure or crystal quality. Cast alloys, for example, are modified by altered patterns of nucleation, solute micro- and macrosegregation, degree and severity of gas...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005774
EISBN: 978-1-62708-165-8
... quenchant nucleate boiling heat-transfer conditions on the part surface, slow cooling in air, and convection cooling in the quench tank. The IQ-2 process is usually applied to batch quenching. The IQ-3 process is a one-step intensive cooling method (referred to as an IQ-3 technique), where cooling...
Series: ASM Handbook
Volume: 4F
Publisher: ASM International
Published: 01 February 2024
DOI: 10.31399/asm.hb.v04F.a0007010
EISBN: 978-1-62708-450-5
... consecutive modes of heat transfer take place: shock nucleate boiling, film boiling, nucleate boiling, and convection ( Ref 2 ). The heat flux from the part surface is high at the beginning of the quench, resulting in almost instant initiation of the shock nucleate boiling process. Due to the high heat flux...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004157
EISBN: 978-1-62708-184-9
.... These chloride and sulfate vapors, along with fly ash, condense and deposit on the cooler surfaces, such as the waterwalls that surround the combustion zone, and heat-exchanger surfaces in the convection path in the upper furnace. Vulnerable heat-exchanger parts in the convection path are screen tubes...
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
... is limited only by the conductivity of the metal itself and by the ability of the furnace to supply energy at a rate fast enough to maintain the bath temperature. The rate of heating in salt baths is considerably faster than in furnaces heated by radiation or gaseous convection, because in molten salt...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005205
EISBN: 978-1-62708-187-0
... constructions that can withstand the radiative and convective heat transfer from the plasma column. Furnaces also usually have material feeding systems. These can consist of vibratory or rotary feeders with bins (for bulk materials) or bar feeding systems. If the furnace is to operate continuously, the feed...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003841
EISBN: 978-1-62708-183-2
... liner materials used to contain severe service environments encountered in industries such as metal production, heat treatment furnaces, glass production, petrochemical processing, chemical synthesis, and power generation. They are a specialized area of ceramic materials that, as a larger group...