1-20 of 67 Search Results for

cope and drag patterns

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
Image
Published: 01 December 2008
Fig. 13 Vacuum-fill pressure squeeze machine that uses cope and drag patterns More
Image
Published: 01 December 2008
Fig. 9 Drag half of a cope and drag pattern More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005308
EISBN: 978-1-62708-187-0
... Abstract This article discusses the types of patterns used for a specific application such as loose patterns, match plate patterns, cope and drag patterns, and special patterns. It describes the principles of the patternmaking techniques used to make expendable molds and for metal casting...
Image
Published: 01 December 2008
Fig. 5 Motorcycle cylinder that was cast in a shell mold made using the cope-and-drag pattern shown More
Image
Published: 01 December 2008
Fig. 1 Major components of a sand mold. (a) Pattern assembly for cope and drag sections of a mold. (b) Cross section of sand mold assembly with core More
Image
Published: 01 December 2008
Fig. 2 Major components of a sand mold (a) pattern assembly for cope and drag sections. (b) Cross section of mold with core 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: 01 December 2008
is released from the flask (step 7 in Fig. 3 ), the sand-filled flask is kept under vacuum and placed on the pouring line, as shown here for the drag portion of the mold. (h) The cope portion (produced in similar fashion) is placed over the drag portion of the mold to form a cope-and-drag assembly More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005338
EISBN: 978-1-62708-187-0
... Rammed Graphite Casting Molds for zirconium can be produced using wood, plastic, composite, or metal patterns. These molds are produced from patterns similar to those used for other metals. Conventional rammed graphite molding uses the standard cope and drag patterns, with or without cores. Cope...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005251
EISBN: 978-1-62708-187-0
... pattern to produce the hollow cavity for the final casting in the finished mold. The control factors of the V-process that may affect the quality of the castings are the molding sand, vibration frequency, vibrating time, degree of vacuum imposed, and pouring temperature. Fig. 2 Cope-and-drag...
Image
Published: 01 December 2008
Fig. 2 Three types of patterns used to produce a water pump casting in various quantities. (a) Wood pattern on a follow board, good for 20 to 30 castings. (b) Match plate pattern for up to 50,000 castings depending on material. (c) Cope and drag plastic (up to 20,000 castings) or metal More
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
... method of plaster molding. Changes in details of the conventional method ensure high accuracy and smooth surface finish, which are required in metal match plate patterns. Common dimensional requirements for match plate patterns are: Match between the cope and drag, within 0.25 mm (0.010...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005241
EISBN: 978-1-62708-187-0
... patterns are removed after the sand is bonded in a flask in cope-and-drag sections ( Fig. 1 ). Cores are separate shapes that are placed in the mold to provide castings with contours, cavities, and passages that are not practical or obtainable with molds. Patterns may be permanent (as is typical in sand...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... is filled with sand and completely compacted, the mold is turned over and the pattern withdrawn. The procedure is repeated for the cope half of the mold. The cope is placed on the drag, and metal or wooden “jackets” are placed around the parting line to align the two halves and prevent metal from running...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003170
EISBN: 978-1-62708-199-3
... are placed in the drag, or bottom section, of the mold, and the mold is then closed by placing the cope, or top section, over the drag. Mold closing completes the production of the mold, into which the molten metal is then poured. Casting production begins with melting of the metal (left side of Fig. 1...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009018
EISBN: 978-1-62708-187-0
...); pattern and rigging, in (m). In a redesign, Fig. 14(j) , the parting line was located at the centerline of the housing, and the boss was placed in the cope half of the mold at right angles to the parting line. Four ribs (of which one is the tubular shape) spaced 90° apart replaced the three-rib...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009017
EISBN: 978-1-62708-187-0
... be made before the actual sizes of the various components can be calculated. Runner and Ingate Figures 1 and 2 show gating systems with ingates coming off the top of the runner and then into the casting. This arrangement of cope ingates and drag runners is common and has the advantages...
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
...-compaction machine. The loose sand is shown (a) before and (b) after compaction. Source: Ref 38 Match-plate-type automatic molding machines use a plate with patterns for both cope and drag mounted on it. They can be either tight flask or flaskless by design. In match-plate pattern machines, patterns...
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
... to increase productivity and complexity. The major parts of a typical horizontal mold are presented in Fig. 9 . A plate with patterns for both cope and drag mounted on opposite faces is called a match plate. Both cope and drag halves of the mold are alternately filled with prepared sand before being...
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
... are not always needed, however, particularly when pouring gray iron and brass. Fig. 5 Motorcycle cylinder that was cast in a shell mold made using the cope-and-drag pattern shown Metal used for making the sprue, riser, runner, and gates is usually the same as used for the plate and the pattern...