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preheat temperature
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Image
Published: 01 January 1993
Fig. 5 Carbon equivalent versus minimum preheat temperature. The best-fit line shown may be represented approximately by: T = 210(C eq ) − 25, where T is the preheat temperature (°C).
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Image
Published: 15 June 2020
Fig. 4 Shows the effect of preheat temperature on (a) oxygen pickup, (b) exposure time on crack length and density, and (c) preheat temperature on crack length and density for an exposure time of 100 μs. Source: Ref 19
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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005645
EISBN: 978-1-62708-174-0
... Abstract This article is a compilation of tables that provide information on preheat and interpass temperatures and the postweld heat treatment for selected carbon steels, as well as steel pressure vessels and pipe welds. Information is also provided for preheat and interpass temperatures...
Abstract
This article is a compilation of tables that provide information on preheat and interpass temperatures and the postweld heat treatment for selected carbon steels, as well as steel pressure vessels and pipe welds. Information is also provided for preheat and interpass temperatures of heat treatable steels, namely, low-alloy steels and ultra high-strength steels.
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001406
EISBN: 978-1-62708-173-3
... the influence of welding procedure factors on the weldment properties. These procedure factors include preheat temperature, interpass temperature, postweld heat treatment, and heat input. carbon steel heat input heat-affected zone interpass temperature low-alloy steels post weld heat treatment...
Abstract
This article describes the fundamental and specific factors that control the properties of steel weldments in both the weld metal and heat-affected zone (HAZ) of carbon and low-alloy steels. It provides information on steel types and their weldability. The article also explains the influence of welding procedure factors on the weldment properties. These procedure factors include preheat temperature, interpass temperature, postweld heat treatment, and heat input.
Image
Published: 01 January 1993
Fig. 9 Plot for selecting preheat, interpass, and postweld soak temperatures for fully hardened carbon steels using hydrogen control method. Source: Ref 7
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Image
Published: 01 January 2005
Fig. 32 Predicted temperature profiles for beryllium strip preheated to 760 °C (1400 °F). Source: Ref 76 , 68
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Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001402
EISBN: 978-1-62708-173-3
...-expensive fluid as a cover layer. These machines also lacked a preheating capability, which was found to be necessary in order to reduce the temperature differential at the point of solder melting. This measure prevents wicking and other undesirable characteristics that can develop when one part of a solder...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001433
EISBN: 978-1-62708-173-3
... structural steels, most steel producers recommend the use of low-hydrogen electrodes. However, the use of electrodes that are not low in hydrogen may be acceptable in some applications, if the parts are relatively thin and the joints are not restrained or if a higher preheating temperature can be used. Gas...
Abstract
This article discusses factors involved in selecting welding processes and consumables and establishing procedures and practices for the arc welding of low-alloy steels. It provides information on welding consumables in terms of filler metals and fluxes and shielding gases. The article describes the various categories of low-alloy steels, such as high-strength low-alloy (HSLA) structural steels, high-strength low-alloy quenched and tempered(HSLA Q&T) structural steels, low-alloy steels for pressure vessels and piping, medium-carbon heat-treatable (quenched and tempered) low-alloy (HTLA) steels, ultrahigh-strength low-alloy steels, and low-alloy tool and die steels. It concludes with a discussion on repair practices for tools and dies.
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006576
EISBN: 978-1-62708-290-7
... to the bulk. This hardness gradient was attributed to tempering of martensite in the bulk due to repeated thermal cycling during LPBF ( Ref 14 ). Mertens et al. conducted an in-depth study on the effect of substrate preheat temperature on the microstructure and tensile properties of H13. They reported...
Abstract
This article provides a brief overview of additive manufacturing (AM) of tool steels via various AM technologies such as laser powder bed fusion, electron powder bed fusion, blown powder directed energy deposition, and binder jet AM. The discussion includes process overview and covers the mechanism, advantages, and applications of each of these techniques.
Image
Published: 01 January 1993
Fig. 8 Plot used to obtain heat input/preheat combinations for specific carbon equivalents. The scales A, B, C, and D refer to the level of diffusible hydrogen as certified by the electrode manufacturer. Source: Ref 7 Line Minimum preheat temperature °C °F 1 175 345 2
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Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001405
EISBN: 978-1-62708-173-3
... to accelerate the escape of hydrogen and still avoid the temperature range within which HIC is likely. Such thermal treatments are excellent candidates for welded components that are small enough to be preheated in a furnace prior to welding and returned to the furnace immediately after welding for a period...
Abstract
This article describes the common defects associated with arc welds in the weld metal and the heat-affected zone (HAZ) of the plate. These defects include porosity, incomplete fusion, hot cracks, lamellar tearing, undercut, rollover, and inclusions. The article details hydrogen-induced cracking and its mechanism as well as the control measures. It provides information on measurement of hydrogen in weld metal and presents a table that contain information on effect of welding processes and electrodes on hydrogen levels in welds.
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005345
EISBN: 978-1-62708-187-0
... tends to decrease. The requirement for preheat generally applies to cast steels with carbon contents over 0.30%, and the recommended preheat temperatures typically vary from 120 to 205 °C (250 to 400 °F). Cast Stainless Steels Many of the corrosion-resistant types of cast stainless steels...
Abstract
Repair welding is a necessary operation for most fabricators and can cost more than the price of the original component if performed improperly. This article provides a discussion on the repair welding of castings for ferrous and nonferrous materials. The discussion focuses on the surface preparation, weld repair process selection, joint selection, filler metal selection, weld repair considerations, deposition techniques, postweld heat treatment, and verification of weld repair quality.
Image
Published: 01 January 2005
Fig. 7 Typical “on-cooling” Gleeble curves of specimen reduction of area as a function of test and preheat temperatures with typical hot-workability ratings indicated
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Image
Published: 15 June 2020
Fig. 3 Shows the change in stress from compressive to tensile with increasing preheat temperature for LPBF of H13 tool steel. Source: Ref 17
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Image
Published: 01 January 2005
¯ ˙ ≈ 30 s − 1 ) . Specimen preheat temperature, die temperature, and dwell time were 913 °C (1675 °F), 191 °C (375 °F), and 14 s, respectively. Reductions were (a) 25% and (b) 53%. Source: Ref 42
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Image
Published: 31 October 2011
Fig. 21 Process-microstructure map for alloy CMSX-4 that reveals the semiquantitative relations between heat-source travel speed ( V b ), power ( P ), preheat temperature ( T o ), and the type of dendrite growth. Source: Ref 12
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Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017