1-20 of 500 Search Results for

core sands

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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
... Abstract Cores are separate shapes of sand that are placed in the mold to provide castings with contours, cavities, and passages that are not otherwise practical or physically obtainable by the mold. This article describes the basic principles of coremaking and the types of core sands, binders...
Image
Published: 01 December 2008
Fig. 7 Small appended core sections were broken off the main core in handling. Increasing the size of the cored holes reduced breakage, improved core venting, and facilitated removal of core sand after casting this steel part. More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009019
EISBN: 978-1-62708-187-0
... Abstract Cores are separate shapes, of sand, metal, or plaster, that are placed in the mold to provide castings with contours, cavities, and passages. Cored holes should be designed simply as the intended function of the casting permits. This article describes the designing of casting...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
... shakeout vertical core knockout machine A-frame core knockout machine pressure testing automating gate removal After solidification and cooling, further processing and finishing of the castings is required. The required operations and levels of finishing depend on the process (green sand, no-bake...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003170
EISBN: 978-1-62708-199-3
... that the pattern can be easily removed. When these two halves are reassembled, a cavity remains inside the mold in the shape of the pattern. Internal passageways within a casting are formed by the use of cores. Cores are parts made of sand and binder that are sufficiently hard and strong to be inserted...
Image
Published: 01 December 2008
Fig. 9 Effect of sand fineness on time required for baking oil-sand cores to maximum strength More
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005243
EISBN: 978-1-62708-187-0
... to the cost. Sand Molding The basic steps involved in making a sand-flask mold from a permanent pattern are shown in Fig. 1 . The sequence begins with a mechanical drawing of the desired part. Patterns are then produced and mounted on pattern plates. Both the cope and drag patterns include core...
Image
Published: 30 November 2018
Fig. 16 Core assembly for precision sand casting. (a) Core assembly for CF 34-8 engine TO4 front frame. Source: Ref 14 . (b) Inorganic core assembly for an automotive engine block. Complete core package consists of seven cores and weighs 17 kg (38 lb). Cycle time is 30 s per core package More
Image
Published: 01 December 2008
Fig. 10 Well-proportioned cored passages. Sand core was able to withstand normal foundry handling, provided stable positioning in the mold, and was easily vented. More
Image
Published: 01 December 2008
Fig. 6 Production of a blown sand core in a two-piece core box. See text for discussion. More
Image
Published: 01 December 2004
Fig. 16 ZA-27 alloy (UNS Z23841, Zn-11Al-0.9Cu-0.02Mg), as sand cast. Primary, cored aluminum-rich dendrites surrounded by peritectic α + η. White particles are ε phase. Less eutectic is apparent than in Fig. 1 , 2 , 23 , 24 Etchant 1, Table 1 . (a) 100×. (b) 500× More
Image
Published: 31 August 2017
Fig. 15 Machine components and core-shooting cycle (gas cured). 1, sand chamber; 2, shooting head; 3, gassing/washing head; 4, hydraulic/pneumatic piston; 5, moving core-box half; 6, stationary core-box half; 7, tilting unit; 8, conveyor; 9, core. (a) Cycle starts. (b) Core-box closing More
Image
Published: 01 December 2008
Fig. 7 Eliminating the cored hole in this sand casting permitted a simple flat parting plane. Previously, a stepped parting plane was required, to permit removal of the core print from the mold. More
Image
Published: 01 December 2008
Fig. 9 A radius at the junction of a cored hole and a sand casting face requires a shaped core, as in (a). Mismatch could result. Elimination of radius, as in (b), simplifies the core and removes the possibility of mismatch as a result of core shift. More
Image
Published: 01 December 2008
Fig. 30 An improved design that eliminated one core and eight ribs from a sand casting. This resulted in a stronger, more economical part. More
Image
Published: 01 December 2008
Fig. 31 By eliminating two cored pockets from this 4330 steel sand casting, a better solidification pattern was established and defects were eliminated. More
Image
Published: 01 December 2008
Fig. 32 A sand core was required to produce the center configuration of this semipermanent mold aluminum casting. By increasing the wall thickness and placing the inner face of the wall in line with the inner edge of the flanges, defects were eliminated and a simple metal core produced More
Image
Published: 01 December 2008
Fig. 16 Core movement in this aluminum sand casting caused reduction of a 5 16 -in. wall to 3 32 in. Additional core support was required, to hold desired wall thickness. More
Image
Published: 01 December 2008
Fig. 7 Effect of baking time and temperature on tensile strength of oil-sand cores. The dry mixture was 99% silica sand (fineness, AFS 40) and 1% cereal. Based on total weight of dry material, 1% linseed oil and 3% water were added. More
Image
Published: 01 December 2008
Fig. 8 Baking speeds of phenolic-resin-bonded versus oil-bonded sand cores More