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die temperature control

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040257
EISBN: 978-1-62708-300-3
... control of the working temperature and strain rate. It describes the materials typically used as well as equipment and tooling, die heating procedures, part separation techniques, and postforging heat treatment. forgings hot-die forging isothermal forging nickel alloys titanium alloys...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220353
EISBN: 978-1-62708-259-4
.... It describes the effect of hot working on nonmetallic inclusions and the many properties influenced by them. It discusses the recrystallization mechanism by which hot working produces microstructural changes and explains how to control it by adjusting temperature, degree of reduction, and cooling rates...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260029
EISBN: 978-1-62708-336-2
... into the die Measuring outside the die with a contact-type thermocouple Using an optical pyrometer All of these methods have both merits and drawbacks. Historically, there has been no practical method of accurately measuring and controlling the aluminum extrusion surface temperature as it leaves...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260213
EISBN: 978-1-62708-336-2
... are the billet, the die, the extrusion press, the extrusion process, stretching, cutting, heat treatment, and surface treatments. Fig. 1 Typical flow diagram of an extrusion quality control system This chapter presents a complete process and quality control system to enable effective control...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260055
EISBN: 978-1-62708-336-2
... is essential to the modern extrusion system. Fielding and Macey ( Ref 13 ) reviewed systems for heating extrusion dies. Multichamber die ovens with multiple drawers ( Fig. 25 ) have replaced traditional top-loading, chest-type die ovens. Each drawer has a separate heating and temperature control system...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480225
EISBN: 978-1-62708-318-8
... processing include: Significantly lower cut weights Closer control of preheat and die temperature throughout the forge cycle More latitude and control of strain rates during the forge cycle, because isothermal units are controlled at a nominal 0.2 mm/mm/min (0.2 in./in./min), while most hydraulic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980323
EISBN: 978-1-62708-342-3
... Conference), Leoben-Wien , 1981 , p 294 – 295 [Rup 95]: Ruppin D. , Temperaturführung beim direkten Strangpressen von Aluminumlegierungen, Grundlagen des Strangpressens (Temperature Control in the Direct Extrusion of Aluminum Alloys, Principles of Extrusion) , Herausgegeben K. von...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410103
EISBN: 978-1-62708-280-8
... is open like a plate or closed like a box or a ring) Variations in casting ejection temperature are minimized by engineering for consistent die temperature. Most die casting cells have devices that control the time interval between casting ejection and water quenching. This automation reduces...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260149
EISBN: 978-1-62708-336-2
... selection of temperature and speed process parameters. The advantage of the approach is its practicality. They used an inexpensive method by changing the die design using a direct extrusion press and developed an algorithm for calculating the optimum temperature and speed conditions for a given extrusion...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740103
EISBN: 978-1-62708-308-9
... friction. Lubricants also reduce die wear, help in providing temperature control, and minimize high-temperature oxidation of the workpiece. Hot working normally takes place at approximately 70 to 80% of the absolute melting temperature. During hot working...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260087
EISBN: 978-1-62708-336-2
...) and machining (using computer numerical controlled, CNC, and electrical discharge machining, EDM processes. Now the market is moving toward computer aided industrial design (CAID) and computer aided industrial machining (CAIM) to produce reproducible dies. With the use of CAD to CAM and CAIM, many extrusion die...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260245
EISBN: 978-1-62708-336-2
... in developing multichamber die ovens to maintain each die at a precise temperature in a controlled atmosphere to improve expensive die life and to finally improve the surface finish of extrusion. Further improvements continue. With the application of computers in both the design and manufacturing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280091
EISBN: 978-1-62708-267-9
... of isothermal forging to reduce forging loads and improve die fill, but also uses an increasing array of automated controls and process modeling. It is important to recognize that, with the availability of modern computing power, it is possible to model the strain, strain rates, and temperatures during...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980417
EISBN: 978-1-62708-342-3
... subjected to high thermomechanical stresses, depending on the deformation temperature. This can result in deformation of the die close to the shape-producing apertures after only a few extrusions, for example, in the case of copper alloy extrusion. This risk is countered by the use of shrunk-in die inserts...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260187
EISBN: 978-1-62708-336-2
... speed, V E . However, the extrusion ratio is generally fixed by the shape required by the customer for a particular die configuration and the size of the container so the temperature and the speed are the only controllable factors. Other than process variables, the die variables are also critical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.9781627083423
EISBN: 978-1-62708-342-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480243
EISBN: 978-1-62708-318-8
... of properties are hard to control with such heating. Time at temperature should be kept to a minimum; heating time should not be much longer than necessary to achieve heat penetration. For this reason, forming blanks are usually heated one at a time, regardless of the heating method used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410029
EISBN: 978-1-62708-280-8
... are more popular for alloys that melt at low temperatures, such as zinc, lead or tin. Figure 4.6 illustrates the basic elements of a die casting machine cell. The machine is equipped with a robot for metal pouring (alternatively, a doser), a spraying device (on a gantry crane) for application of die...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240279
EISBN: 978-1-62708-251-8
... pressures, and the force and energy requirements. In many instances, lubricants are used to minimize friction. Lubricants also reduce die wear, help in providing temperature control, and minimize high-temperature oxidation. References 1. Beddoes J...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120033
EISBN: 978-1-62708-269-3
... Abstract This chapter provides practical information on the forming and forging processes used to manufacture titanium parts, including die forging, precision die forging, hot and cold forming, superplastic forming, and deep drawing. It explains how process variables such as temperature...