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wet-bag isostatic pressing

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Published: 30 September 2015
Fig. 8 Schematic of wet-bag cold isostatic pressing. An impervious moldable bag is filled with powder, evacuated, and subjected to an isostatic pressure using a water-based liquid medium at ambient temperature. More
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
.... cold isostatic pressing density depressurization rate die compaction dwell time green strength pressure generators pressure vessels tap density thermal processing wet-bag isostatic pressing COLD ISOSTATIC PRESSING (CIP) is a materials processing technique in which high pressure...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
... Consolidation Mechanical consolidation is an operation performed on prepared ceramic powders in order to form a shape that can be sintered. Many methods have been developed to accomplish this ( Table 1 ), including uniaxial dry pressing, cold isostatic pressing (using either wet or dry bag techniques), hot...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006053
EISBN: 978-1-62708-175-7
... and wet-bag cold isostatic presses are commonly used, the former for high-volume small parts, and the latter for low-volume large parts, which typically are green machined ( Ref 5 ). Process An impervious moldable bag is filled with powder ( Fig 8 ), evacuated, and subjected to an isostatic...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006124
EISBN: 978-1-62708-175-7
... are cold isostatically pressed employing a wet-bag technique, whereas wire bars and small sheet bars are die pressed or cold isostatically pressed employing a dry-bag technique ( Ref 2 ). Usually, pressing is performed without lubricant. Other compacting techniques, such as extrusion, injection molding...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001105
EISBN: 978-1-62708-162-7
..., hydraulic pressure is built up, thereby compressing the powder contained in the mold. The two hydrostatic pressing methods frequently used for pressing cermets are the wet-bag method and the dry-bag method. Wet-Bag Method The wet-bag method involves placing one or more powder-filled molds inside...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003420
EISBN: 978-1-62708-195-5
... (which has an open interconnected pore structure) to remove volatile contaminants (lubricants and mixing and blending additives), water vapor, and gases; and (4) consolidation by vacuum hot pressing or hot isostatic pressing. The hot pressed cylindrical billets can be subsequently extruded, rolled...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002465
EISBN: 978-1-62708-194-8
... and finish Diffusion bond Aluminum, titanium, or stainless steel thin foil Metal fiber or man-made fiber (boron, alumina glass, carbon) Wound on steel tube, sealed and evacuated with metal bag Isostatic pressure in furnace Machine and finish Multiple hot press and diffusion bond Aluminum, titanium...
Book

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.9781627081955
EISBN: 978-1-62708-195-5
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003487
EISBN: 978-1-62708-195-5
... and improved composed principally of polymeric esters, in antistatic agents. Agents that, when added to a removal of volatiles from the resin. Lay-up is which the recurring ester groups are an inte- molding material or applied to the surface of usually vacuum bagged with a bleeder and re- gral part of the main...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0009239
EISBN: 978-1-62708-173-3
... × 12.5 × 3.2 mm (0.59 × 0.49 × 0.13 in.) A silver-copper eutectic, BAg-8, is suitable to braze copper to titanium in the temperature range of 800 to 860 °C (1470 to 1580 °F). This filler metal is characterized by a good flow inside the flat capillary gap, due to excellent wetting of copper, where...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006488
EISBN: 978-1-62708-207-5
... on graphite particles that are incorporated in aluminum melts. In other cases, wetting agents, including magnesium and lithium, are added to the melts to promote wetting between the melts and reinforcements. Stir mixing and casting are now used for large-scale production of particulate MMC ingots, which...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003421
EISBN: 978-1-62708-195-5
... disadvantage of this process is that one is restricted to relatively low-melting or low-softening point matrix materials. Whisker reinforced CMCs are generally made by mixing the whiskers with a ceramic powder slurry, dried, and hot pressed. Sometimes hot isostatic pressing (HIP) rather than uniaxial hot...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.9781627082006
EISBN: 978-1-62708-200-6
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003068
EISBN: 978-1-62708-200-6
...- point. alternating copolymer. A copolymer in which each jacent plies, oriented at alternating angles. repeating unit is joined to another repeating unit in the annealing temperature. Any temperature within a polymer chain (-A-B-A-B angle press. A hydraulic molding press equipped temperature range...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002481
EISBN: 978-1-62708-194-8
..., but allow manufacture of parts of greatly varying web thicknesses. The “green” compact has relatively low density and very low strength. Isostatic pressing in a deformable jacket gives better density distribution for complex shapes. Roll compaction is advantageous for strip and simple two-dimensional shapes...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003052
EISBN: 978-1-62708-200-6
...) states. A single ceramic product can involve several interim forming steps. A ceramic forming process, such as dry pressing or injection molding, can involve significant wet forming during slurry production prior to granulation and final-shape forming. Viscoelastic properties required by various...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003827
EISBN: 978-1-62708-183-2
...-beryllium material were tested: extruded (longitudinal and transverse direction), hot isostatic pressing (HIP) consolidated, and electron beam welded HIP. Specimens stressed at 75% of the 0.2% yield strength were immersed in 3.5% NaCl solution for 10 min and dried for 50 min every hour for 30 days...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003163
EISBN: 978-1-62708-199-3
... blend to roughly 80% density; (3) degassing the preform (which has an open interconnected pore structure) to remove volatile contaminants (lubricants and mixing and blending additives), water vapor, and gases; and (4) consolidation by vacuum hot pressing or hot isostatic pressing. The hot-pressed...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005220
EISBN: 978-1-62708-187-0
... bifilms occur mainly during turbulence involved in the pouring of liquid metals, they similarly can be avoided by avoiding turbulence. Although the effects of bifilms can be reduced (but often not eliminated) by expensive postcasting operations such as hot isostatic pressing or working, the major future...