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pressure riserless casting

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005261
EISBN: 978-1-62708-187-0
... riserless/pressure riserless casting process for casting aluminum. metal casting furnaces pressure riserless casting casting aluminum low-pressure casting vacuum riserless LOW-PRESSURE METAL CASTING has been used since the 1950s to produce high-volume, high-integrity castings in alloys...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005187
EISBN: 978-1-62708-187-0
...  Gravity   Static top pour Nonferrous and metal-matrix composites (MMCs) 3 Yes Medium to large …   Tilt pour Nonferrous 3 Yes Medium to large …  Low-pressure permanent mold (LPPM)   Standard LPPM Light metals 3 Yes Medium …   Vacuum riserless casting/pressure   riserless...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006513
EISBN: 978-1-62708-207-5
..., and the application of a vacuum to the die cavity. (see the article “Die Casting of Aluminum Alloys” in this Volume). Gravity casting Low-Pressure Permanent Mold Casting <xref rid="a0006513-ref1" ref-type="bibr">(Ref 1)</xref> Counter Pressure Casting Vacuum Riserless Casting (VRC) Centrifugal Casting...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006568
EISBN: 978-1-62708-210-5
... castings. USCAR, United States Consortium for Automotive Research; PM, permanent mold; VRC, vacuum riserless casting; PRC, pressure riserless casting. Source: Ref 7 Fig. 1 Separately cast tensile test bar, including casting configuration (ASTM B 26/B 26M). European applications...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005276
EISBN: 978-1-62708-187-0
...Abstract Abstract Vacuum high-pressure die casting uses a vacuum pump to evacuate the air and gases from the die casting die cavity and metal delivery system before and during the injection of molten metal. This article describes the conventional die casting, vacuum die casting, and high...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006548
EISBN: 978-1-62708-210-5
... the relative castability of aluminum foundry alloys in terms of four criteria: Resistance to hot cracking Pressure tightness (i.e., lack of porosity) Fluidity Shrinkage tendency Ratings of castability, corrosion resistance, machinability, and weldability for aluminum casting alloys, 1, best...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009015
EISBN: 978-1-62708-187-0
...)   Standard LPPM Light metals 3 Yes Medium …   Vacuum riserless casting/pressure riserless casting Aluminum 3 Yes Medium …   Counterpressure casting/pressure-counterpressure casting Aluminum 3 Yes Medium … Countergravity casting All 3 … Small … High-pressure die casting...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006524
EISBN: 978-1-62708-207-5
... processes. Alloy Resistance to hot cracking (a) Pressure tightness Fluidity (b) Shrinkage tendency (c) Corrosion resistance (d) Machinability (e) Weldability (f) Sand casting alloys 201.0 4 3 3 4 4 1 2 208.0 2 2 2 2 4 3 3 213.0 3 3 2 3 4 2 2 222.0 4...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005287
EISBN: 978-1-62708-187-0
... extensive chilling was used, but it was always a factor in permanent mold. For this reason, and to overcome other low-pressure process limitations, vacuum riserless casting (VRC) was developed in the early 1960s. Rather than pressurize a contained molten reservoir, the application of a vacuum on the mold...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005325
EISBN: 978-1-62708-187-0
... to 1.8 for CG iron if FG iron is 1 ( Ref 13 ). Because of the rather low shrinkage of CG iron, it can be cast riserless. Expensive pattern changes are therefore not necessary when converting from FG iron to CG iron, because the same gating and risering techniques can be applied. Riserless casting...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006340
EISBN: 978-1-62708-179-5
..., segregation carbides, and microshrinkage in a low-nodule-count area. Etched with 4% nital. Source: Ref 30 Fig. 2 Casting modulus versus pressure exerted on the mold walls during solidification. Source: Ref 9 Fig. 3 Cooling time of castings as a function of modulus and matrix type...