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air venting

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Published: 01 December 1998
Fig. 36 Principals of SAAB rubber-diaphragm (fluid forming) method. The air vents keep trapped air from causing blisters on the workpiece. More
Image
Published: 01 January 2006
Fig. 21 Principal components of SAAB rubber-diaphragm (fluid forming) method. The air vents keep trapped air from causing blisters on the workpiece. More
Image
Published: 01 November 2010
Fig. 9 Weld lines and air trap/vent are predicted by using a computer-aided engineering tool for the powder injection molding process. (a) Plate. Source: Ref 22 . (b) Dental scaler tip. Source: Ref 23 . (c) Geometry evaluation of microfeatures. Source: Ref 24 More
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
..., discussed elsewhere in this Volume, is limited by the size and cost of dies but has the advantages of high volume and improved surface and internal quality, like vacuum high-pressure casting. Conventional Die Casting Air venting is an important aspect of conventional high-pressure die casting. Back...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005318
EISBN: 978-1-62708-187-0
... and speed. The article also describes the functions of the tooling which involves supplying of molten alloy to the casting machine and injecting it into the die. die casting tooling materials selection failure modes wear die casting dies product design design tolerance air venting shrinkage...
Image
Published: 01 January 2003
Fig. 2 Corrosion rates as a function of time for commercially pure magnesium. Curve A, distilled water vented to air through a caustic trap; curve B, distilled water vented to atmospheric CO 2 . Source: Ref 2 More
Image
Published: 01 December 1998
through the blow ports or vents and passes through the core, causing almost instantaneous hardening of the resin-coated sand. The core is ready for ejection from the core box after purging with clean air for a few seconds. After the catalyst gas passes through the core, it leaves the core box through More
Image
Published: 01 December 2008
the core box through the blow ports or vents and passes through the core, causing almost instantaneous hardening of the resin-coated sand. The core is ready for ejection from the core box after purging with clean air for a few seconds. After the catalyst gas passes through the core, it leaves the core box More
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003016
EISBN: 978-1-62708-200-6
... the mold back. (d) Three-stage blow needle close to panel area Venting Venting is required to remove trapped air from the mold cavity during parison inflation to allow the material to expand correctly and contact the mold surface uniformly. Venting along the parting line is often assisted...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005758
EISBN: 978-1-62708-171-9
... the facility at a safe location. Vent lines for oxygen should be cleaned for oxygen service. Flammable gas vent outlets should be adequately separated from any other vent outlet, air intakes, and potential sources of ignition. Vent lines should not be interconnected. They should lead separately...
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
.... Extending the runner beyond the gate provides a reservoir that traps the first metal of the pour, which is likely to contain dross formed by entrapped air. Venting the runner extension is advisable, because this helps ensure prompt filling. For vertical molds, horizontal runners should be under the mold's...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003171
EISBN: 978-1-62708-199-3
..., and vents on the casting allow air to escape and relieve the back pressure that opposes mold filling. Fig. 9 Basic components of a simple gating system for a horizontally parted mold Recommended Practices The gating system must fill the mold quickly, while minimizing turbulence. Turbulence...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006074
EISBN: 978-1-62708-175-7
... and seal change. All CIP vessels have fill and drain ports in the closures and a top air vent port to allow total displacement of air during fluid fill. Fill and drain ports are at the bottom. The air vent port is required to avoid air trapping that would otherwise result in slow pressurization/pumping...
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
... must force the air out of the cavity through properly located vents. If good venting practices are not followed, any air trapped in the mold can accumulate in localized areas, resulting in unfilled features of the casting. Standard practice incorporates the use of vented ejector pins, because...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005244
EISBN: 978-1-62708-187-0
... manifold and a lower gas exhaust manifold. The catalyst gas enters the core box through the blow ports or vents and passes through the core, causing almost instantaneous hardening of the resin-coated sand. The core is ready for ejection from the core box after purging with clean air for a few seconds...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006048
EISBN: 978-1-62708-172-6
... the filler viscosity and allow it to be pumped. Wait for casing filler to settle: After the casing filler has settled, top it off until there is no more settling. After allowing the filler to settle and cool, more wax can be added through both vents, using a connection to the vents that allows air...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003015
EISBN: 978-1-62708-200-6
..., the most common of which is the vacuum sizer. In the case of round pipe, an oversized tube can be extruded and pulled down into a vessel that is under vacuum. A vent hole, established inside the extrusion die, admits air to the inside of the tube. The force of the vacuum draws the outside of the plastic...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
... stabilizer If degradation is shear-induced, raise melt temperature Air entrapment Incorrect venting from the compression zone Use larger-particle-sized resin Increase compression ratio of the screw Decrease the feed section length Use grooved feed extruder Use a vented extruder...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005503
EISBN: 978-1-62708-197-9
...-molding-related defects and also presents a systematic way of using the CAE tool to develop an optimal injection molding process. Basic Capability—Short Shot, Flash, Weld Line, Air Vent, and Other Features This section demonstrates the use of simulation results to predict typical molding defects...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005260
EISBN: 978-1-62708-187-0
.... Venting must be placed advantageously to allow air and gas to escape ahead of the poured metal. Chills, which are sometimes inserted in the mold to initiate and accelerate solidification in desired locations and directions, must be properly sized and located. Antichills are occasionally needed. Use...