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loose patterns

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Published: 01 December 1995
Fig. 12-2 A loose pine pattern and core box for a large valve body. The pattern is in the foreground. The core box with loose pieces is in the background. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200164
EISBN: 978-1-62708-354-6
.... Aluminum and some plastics will typically last longer than hardwoods with cast iron patterns having the longest life. Table 12-1 is a general guide for the approximate number of castings that can be produced with a given pattern material. Unmounted or loose patterns are for limited use only. Mounting...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200078
EISBN: 978-1-62708-354-6
... of a half corebox, pattern material, and mounted or loose patterns are but a few of the many areas of discussion that affect the total cost of the equipment. Invariably, the best casting cost and casting quality evolve from the more sophisticated pattern equipment, but, unfortunately, the highest initial...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200115
EISBN: 978-1-62708-354-6
... are changed to be more strict, the design should be reviewed, as design changes may be required to meet the new soundness levels. This sometimes requires the modification of pattern equipment and foundry technique. These changes should always be discussed with the foundry engineer. The purpose...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200437
EISBN: 978-1-62708-354-6
... by the withdrawal of a loose part of the pattern. Also used to form part or all of the cope surface of the mold cavity. A core placed over another core to create a flat parting line. Cracking Strip . . . A fin of metal molded on the surface of a casting to prevent hot tearing. Craze Crack (Crazing) . . . 1) Minute...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320011
EISBN: 978-1-62708-332-4
... shrinkage are built onto the patterns over pattern plates as fixed pieces or loose (removable) pieces. Mold assemblies are poured through the sprue. Solidified castings are separated from the molds by shaking or punching out or by feeding molds into a revolving drum with baffle plates. The mold sand...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360051
EISBN: 978-1-62708-435-2
..., mechanical looseness, and index variation form errors. It also presents the calculation of gear frequencies on gearbox vibration spectra and the influence of operating conditions. gear frequency gearboxes vibration analysis vibration sources THE SIGNALS obtained from vibration-measuring...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200206
EISBN: 978-1-62708-354-6
... Dimensional Tolerances for Steel Castings Produced with Different Pattern Equipment in Green Sand Molds ( 4 ) Pattern equipment Relative dimensional tolerances—% Metal matchplate 100 Metal pattern mounted on wood 130 Wood pattern mounted on wood 160 Loose wood patterns 210...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320063
EISBN: 978-1-62708-332-4
... of chaplets and chills in cast iron castings; guidelines for drafts, machine stock, tolerances, and contraction or shrink rule; and guidelines for pattern layouts and nesting are also covered. cast iron chaplets chills core making drafts machine stock manufacturability molding nesting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1985
DOI: 10.31399/asm.tb.sagf.t63420001
EISBN: 978-1-62708-452-9
... are applied at a time. Commonly they are tensile, compressive, shear (slide), rolling, rolling-slide, and torsion. Each type of gear tooth will have its own characteristic stress patterns. Fig. 1-8. Basic stresses that are applied to gear teeth. Often, two or three are simultaneously applied...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860065
EISBN: 978-1-62708-338-6
... band pattern orientations include helical, in-plane, basket, circumferential, or random. The mandrel or the fibers being delivered are rotated to build up the required coverage and thickness. The completed filament-wound item is cured (resin is polymerized) at room temperature, in an oven, or by other...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200173
EISBN: 978-1-62708-354-6
... manually or with the aid of pneumatic tools. The compaction tends to be less uniform and dimensions are not as consistent as other methods. Wood and plastic patterns can be used with this molding method. The pattern is normally attached to a pattern board or plate, but can sometimes be used loose...
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
..., crucible, and vacuum melting, and common casting techniques such as sand casting, plaster and shell casting, evaporative pattern casting, investment casting, permanent mold casting, cold and hot chamber die casting, squeeze casting, semisolid metal processing, and centrifugal casting. casting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110506
EISBN: 978-1-62708-247-1
... For embedded memory applications, the industry has seen an evolution that included direct access of memories using parallel vectors, to testing with embedded microprocessors, to scan-based testing using serial patterns, to Built-In-Self-Test (BIST) solutions, and more recently to programmable BIST...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280079
EISBN: 978-1-62708-267-9
... as many times as necessary, typically using conventionally machined injection tooling. Pattern materials for investment casting can be loosely grouped into waxes and plastics. Waxes are more commonly used. Plastic patterns (usually polystyrene) are frequently used in conjunction with relatively thin...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240095
EISBN: 978-1-62708-251-8
... pattern casting, investment casting, permanent mold casting, and die casting. solidification castings wrought products grain refinement secondary dendrite arm spacing porosity shrinkage sand casting plaster mold casting evaporative pattern casting investment casting permanent mold casting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.sch6.9781627083546
EISBN: 978-1-62708-354-6
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140021
EISBN: 978-1-62708-335-5
... The number of castings that are estimated to be required is a major factor in the choice of casting method. Loose or simple patterns may be used for sand cast prototypes or when only one or a few parts are required. When production is limited, tooling cost dominates. For larger production volumes, tooling...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240003
EISBN: 978-1-62708-251-8
... heating or cooling. metallic structure metallic bond ionic bond covalent bond face-centered cubic pattern hexagonal close-packed pattern body-centered cubic pattern plastic deformation allotropic transformation THE WORD METAL , derived from the Greek metallon , is believed to have...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1985
DOI: 10.31399/asm.tb.sagf.t63420185
EISBN: 978-1-62708-452-9
... of a severely fatigued tooth, progressed along the bearing surface of the adjacent tooth and through the O.D.; fracture area “B” ( Fig. 6-2b ) developed from the origin of a bolt-hole opening and progressed in a parallel alignment to the root of the tooth, in a very similar pattern to “A.” Fig. 6-2...