1-20 of 61 Search Results for

core sand mixers

Sort by
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005354
EISBN: 978-1-62708-187-0
... between 25 and 35 °C (77 and 95 °F). When making larger molds or cores, high-output mixers are essential in order to prevent undue precuring of the sand mixture before the moldmaking or coremaking operation is completed. With larger molds and cores it is essential that the sand, particularly near...
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
... to mix the sand and dry ingredients adequately with water and binders to develop the necessary strength to permit baking process cores to be removed from the core boxes in the uncured state. Most shell process sands are hot coated in paddle/plow-type mixers using solid or liquid novolac resins. Cold...
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...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005242
EISBN: 978-1-62708-187-0
.... (a) Pattern assembly for cope and drag sections of a mold. (b) Cross section of sand mold assembly with core After the part is cast and solidified in an expendable mold, the next step is a shakeout operation, which breaks up the mold and separates it from the cast part. The sand or mold aggregates can...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006297
EISBN: 978-1-62708-179-5
...) are widely used as special molding aggregates, but bauxite ( Fig. 3e ) and silicon carbides also are options ( Ref 9 ). Binder Systems There is a wide variety of binder systems suitable for the production of molds and cores for sand casting. To decide on the appropriate binder system for a specific...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006533
EISBN: 978-1-62708-207-5
... with the binder and catalyst, usually in a continuous mixer. The mixed sand is vibrated or hand-rammed around the pattern or into a core box; the binder and catalyst react, hardening the sand. When the mold or core has reached sufficient strength (the strip time) to allow for handling, it is removed from...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005249
EISBN: 978-1-62708-187-0
... as green and dry strength, permeability, and castability. These include cement, ceramic talc, fiberglass, sand, clay, wollastanite, pearlite, and fly ash. Cores are typically made of the same material and by the same process as molds, but cores are sometimes made of other materials, such as shell...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005252
EISBN: 978-1-62708-187-0
... for preparation of resin-sand mixture for shell molding, namely, mixing resin and sand according to conventional dry mixing techniques, and coating the sand with resin. Shaping of shell molds and cores from resin sand mixtures is accomplished in machines. The article discusses the major steps in producing a mold...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003489
EISBN: 978-1-62708-195-5
... processing, including perimeter trimming, mechanical forming, heat forming, core splicing, contouring, and cleaning. The article presents basic steps involved in the adhesive-bonding process and concludes with a discussion on adhesive applications and tooling. adhesive adhesive bonded joints adhesive...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005186
EISBN: 978-1-62708-187-0
... Sand Mixer Co., Piqua and Newark, Ohio, releases the sand cutter. 1910s 1910—Matchplates are developed, fostering the viability of jolt-squeeze machines. 1911—Metallurgical microscope is obtainable. First electric arc furnace for metal casting is installed at Treadwell Engineering Co...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009020
EISBN: 978-1-62708-187-0
... operations in design. The article describes the factors that control casting tolerances and presents specific tips for designing castings with uniform wall thickness, unequal sections, thin sections, economical coring, functional packaging, and core design. The article provides a framework for analyzing all...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006018
EISBN: 978-1-62708-175-7
... resin to improve copy quality and life. The core powder is formed from sand, glass, iron, steel, nickel, aluminum, or ferrite materials. Ranging from approximately 40 to 600 μm (1.6 to 23.6 mil) in diameter, these granules can be irregular or spherical (often called shot ) in shape. These developer...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003014
EISBN: 978-1-62708-200-6
... process cycle. Injection Mold Design Injection molds, in their simplest form, consist of two halves, often called the core and cavity ( Fig. 3 ) ( Ref 4 , 5 ). A hole or sprue bushing conducts the melt from the injection nozzle through the sprue and through a gate into the mold cavity. Fig. 3...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005307
EISBN: 978-1-62708-187-0
... alloys. It also reviews other casting processes for zinc alloys, such as sand casting, permanent mold casting, plaster mold casting, squeeze casting, and semisolid casting. alloy composition casting die casting furnaces hot chamber die casting inclusions permanent mold casting plaster mold...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006519
EISBN: 978-1-62708-207-5
... Cleaning Blast cleaning is also used to remove scale resulting from core removal or heat treatment. Both pneumatic and airless (centrifugal) blasting machines are employed. Metallic abrasives (steel or iron grit or shot) and ceramic abrasives (silica sand, aluminum oxide, garnet, and staurolite...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005255
EISBN: 978-1-62708-187-0
... and cores, detailing the binders and other materials used, as well as the formulation and control of slurries. Methods for pattern removal, mold firing, melting, casting, postcasting treatment, and inspection are explained. After presenting design recommendations for investment castings, the article...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... surfaces on the drag surface of the casting (massive projections) Raised core or mold element cutoff A 223 (a) Projections with rough surfaces on the drag surface of the casting (in dispersed areas) Raised sand A 224 (a) Projections with rough surfaces on other parts of the casting Mold...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005807
EISBN: 978-1-62708-165-8
... surface shell of a steel part is heated rapidly to a temperature above the critical temperatures of the steel. After the microstructure of the shell has become austenitic (austenitized), the part is quickly quenched, transforming austenite to martensite while leaving the core of the part in its original...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006392
EISBN: 978-1-62708-192-4
... screws for wet sand  Dry, as against plows or earthmoving devices operating in dry soil Impact of loose abrasive (erosion):  Wet, as against impellers in slurry pumps  Dry, as in sandblasting Metal against metal Sliding:  Lubricated, such as engine crosshead or shaft in a bearing...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006303
EISBN: 978-1-62708-179-5
..., the consequences will probably be serious. Nodular iron requires the best filling system possible. Foundries should also be aware of the problem of lustrous carbon generation with some binder systems, including some green sand systems and some phenolic urethanes. This is once again a product of turbulence...