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gating systems

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410151
EISBN: 978-1-62708-280-8
... shows three alternatives. Figure 7.23(a) shows a side gating system with a common feeder in the middle. The caster is aiming to have a near-net shape bore to minimize the bore porosity, minimum creation of chips and reduce machining time. Figure 7.23(b) shows two independent castings nested...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780047
EISBN: 978-1-62708-268-6
...Abstract Abstract This chapter covers special fault-tree analysis topics, including the use of transfer symbols, INHIBIT gates, sequential AND gates, state-of-the-part versus state-of-the-system considerations, and the fault tree to identify redundancy-defeating failures. INHIBIT gates...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410103
EISBN: 978-1-62708-280-8
... the base of runner system (Point C – Fig. 6.16 ) Transition time = Time to accelerate from slow -shot to fill-shot velocity = (runner system vol/plunger area)/( Sv + Fv )/2 Plunger position for metal at gate – Point D = (position of metal at parting line)- (metal vol. through gate/plunger area...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740047
EISBN: 978-1-62708-308-9
... castings arise from the oxidation of metal during the pouring operation. This is known as reoxidation, and takes place when the turbulent flow of the metal in the gating system causes the metal to break up into small droplets, which then react with the oxygen in the air in the gating system or casting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140047
EISBN: 978-1-62708-335-5
... reformation of additional oxides. Oxide concentration can increase when alloying additions are stirred into the melt, when reactive elements and compounds are immersed, when metal is drawn for pouring, and when metal is poured and conducted by the gating system into the mold cavity. Induction melting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410215
EISBN: 978-1-62708-280-8
... Quench orientation, hanging vs. lying down Fig. 8.20 Gating system concept for a cross member Fig. 8.17 Coring concept in a hollow control arm Fig. 8.14 Lower control arm gating and feeding, (a) front, (b) rear, PMC, permanent mold casting Fig. 8.15 Concept...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140021
EISBN: 978-1-62708-335-5
... for gravity casting in both expendable and nonexpendable molds. Molten metal is normally introduced to the mold cavity in an arrangement referred to as the gating system ( Fig. 3.1 , 3.2 ). It consists of a pouring basin leading to a downsprue through which molten metal is delivered to the parting plane...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... operation. This is known as reoxidation, and takes place when the turbulent flow of the metal in the gating system causes the metal to break up into small droplets, which then react with the oxygen in the air in the gating system or casting cavity to form oxides. Metal casters use computer analysis...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870285
EISBN: 978-1-62708-314-0
... of the screw into the mold. The molten material flows through the nozzle into a water-cooled die where it flows through a sprue, a runner system, and finally the gate into the mold cavity. When the mold is completely filled, the screw remains stationary to keep the thermoplastic in the mold under pressure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240095
EISBN: 978-1-62708-251-8
... is then packed with sand and rammed. The two halves are separated, and the patterns are removed. If hollow sections are required, a sand core is placed in the drag half of the mold. A gating system is then cut into the sand on the cope half of the mold. The two halves are reassembled and clamped or bolted...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.9781627083355
EISBN: 978-1-62708-335-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.9781627082808
EISBN: 978-1-62708-280-8
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780064
EISBN: 978-1-62708-281-5
... in this chamber is forced through a sprue and runner/gate system to fill the mold. The transfer process allows the plastic to enter the mold in a molten or fluid state; thus, the process is adaptable to insert or overmolding. The downside of the transfer process is that there is often a need for secondary...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410253
EISBN: 978-1-62708-280-8
... and the alloy. Specifications are reviewed for feasibility. The product and process changes as well as quality control methods are explored and confirmed. The design is reviewed and confirmed to initiate the sand cast prototype build. Sand cast prototypes replicating the feeding/gating systems and the chilling...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410029
EISBN: 978-1-62708-280-8
... heads, differential carriers, crankcases, oil pans, intake manifolds, and oilers. The manufacture of thin-walled castings such as hollow control arms requires particular care to prevent any hairline cracks during vibratory shakeout or due to the impact on the gating system during the decoring...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610585
EISBN: 978-1-62708-303-4
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780035
EISBN: 978-1-62708-268-6
... are further developed, navigating the through the system in a point-to-point manner. If any of the hypothesized causes of a command event could induce the condition, an OR gate should be used. If all of the hypothesized causes going into a command event are required, an AND gate should be used. Example...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780057
EISBN: 978-1-62708-268-6
... into an OR gate, as shown in Fig. 7.1 . Fig. 7.1 Command event above an OR gate. The probability of occurrence of A is equal to the probability of B plus the probability of C, minus the probability of B times the probability of C. Assume the system being analyzed has an operating time of 2 hours...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110323
EISBN: 978-1-62708-247-1
... was completed. Gates and contact structures are now exposed allowing for electrical contact with probing tips. Figure 9 A SEM image that was captured in backscatter electron detection mode. A SiGe pipe is clearly observed. Figure 12 SEM image (left) and Electron Beam Signal Image Mapping...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780055
EISBN: 978-1-62708-281-5
... Conclusions References References 1. Trantina G.G. and Ysseldyke D.A. , An Engineering Design System for Thermoplastics , 1989 ANTEC Conf. Proc. , Society of Plastics Engineers , p 635 – 639 2. Nielsen E.H. , Dixon J.R. , and Simmons M.K. , “ GERES: A Knowledge...