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automating gate removal

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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
... core knockout machine and the A-frame core knockout machine and lists the advantages and disadvantages of these machines. The article describes the general factors in automated or manual gate removal process. It concludes with discussion on the various types of inspection, such as the liquid penetrant...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005292
EISBN: 978-1-62708-187-0
..., that is, spray-related cooling, is discussed later. Internal heat management automation does not use heavy equipment, such as a robot, but is a more computer-aided engineering application. Die Internal Heat-Removal Management Die internal heat removal involves two issues: Design of the die internal...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006525
EISBN: 978-1-62708-207-5
... on the wall thickness of the casting. Gating System Design <xref rid="a0006525-ref4" ref-type="bibr">(Ref 4)</xref> The gate is the controlling entry point of molten metal into the casting. The gate serves a fluid flow need, but it must later be removed from the casting by trimming. Therefore, the gate...
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
... that will fill the gating system and risers. These components must then be removed from the casting and generally returned for remelt, where their value is downgraded to that of scrap. Production costs can be significantly reduced by minimizing the amount of metal contained in the gating system. The production...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006310
EISBN: 978-1-62708-179-5
... core assemblies are used inside molds, in some cases the iron flow may be directed to the base of the casting to fill from the bottom up. This technique is sometimes used in engine block manufacture. The use of a ceramic filter in the gating system removes small slag inclusions and assists smooth...
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
... or draft must be included on the vertical faces of the pattern to permit the removal of reusable patterns from the mold after mold making. Patterns also incorporate provisions for gating and risering (rigging), which facilitate the flow of metal into the mold cavity and subsequent feeding. For castings...
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
... runner bar, using heated copper blades and spring pressure. Standard gate designs in a range of size increments eliminate the need for special fixturing. The unit is suitable for most small-to-medium sized castings. A fully automated wax cell is described in Ref 10 . Cluster Design The design...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005265
EISBN: 978-1-62708-187-0
... is completely filled, the liquid metal is held in position with this differential pressure while solidification takes place. For investment casting, typically only the castings and their in-gates are allowed to solidify before the differential pressure is removed, causing the molten metal in the central runner...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006513
EISBN: 978-1-62708-207-5
... with shorter cycle times and the use of trim dies and presses for finishing costs. In contrast, castings from a gravity-fed and low-pressure permanent mold process typically require machining to remove gates, runners, and risers (feeders), while trim dies and presses are used more frequently for parting-line...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005266
EISBN: 978-1-62708-187-0
..., overflows, vents, flash, and robot grasping lugs) that must then be removed. This secondary process is called trimming . Although trimming can be done manually, the high production rates characteristic of die casting demand automation. Trim presses are used to remove the excess material. Castings are often...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... the shape of the casting, together with its gates, risers and core prints ( Fig. 1 ). In bonded sand processes, the pattern is removed from the mold and used repetitively to make molds. The dimensions of the pattern are slightly greater than that of the castings because the casting shrinks during...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005260
EISBN: 978-1-62708-187-0
... is opened, and the casting removed. Steps 2 to 4 are repeated until repair of the refractory coating is required, at which time step 1 is repeated to the extent necessary. The usual foundry practice is followed for trimming gates and risers from the castings. Permanent Mold Casting A basic...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006141
EISBN: 978-1-62708-175-7
... that would have credibility among large end users, it was necessary to remove the “black art” tag that unfortunately became attached to this technology. The commercialization effort was also somewhat stunted due the lack of proper infrastructure in terms of equipment, trained personnel, and raw materials...
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
... of these detection devices must be mounted in some predetermined position near the casting removal location. Trimming In finish trimming (not mere breaking of the casting from the gate), the part must almost always be quenched in water-soluble coolant/lubricant similar to that used in machining zinc castings...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005318
EISBN: 978-1-62708-187-0
.... Secondary Processing Trimming The die cast part is ejected from the die with a variety of appendages (runners, gates, overflows, vents, flash, and robot grasping lugs) that must then be removed. This secondary process is called trimming. Although trimming can be done manually, the high production...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005267
EISBN: 978-1-62708-187-0
... in a die for a headlight bezel. A, B, and C indicate approximate positions of thermocouples to be mounted 6.4 mm ( 1 4 in.) below the die cavity surface. Ejection and Postprocessing Robotics Operations such as die lubrication, casting removal, and automation of the die casting...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005303
EISBN: 978-1-62708-187-0
... factors that influence the selection of a casting method. It discusses the production of copper alloy castings. The article concludes with information on the gating and feeding systems used in production of copper alloy castings. casting copper alloys crucible furnaces degassing deoxidation gas...
Book Chapter

By Justin Heimsch
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005273
EISBN: 978-1-62708-187-0
... and helps to ensure high levels of consistency of the billet produced ( Ref 4 ). The bar-casting process is often highly automated, which helps to ensure microstructural consistency during the casting of a single heat, as well as from heat to heat. The following variables are typically monitored...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005287
EISBN: 978-1-62708-187-0
.... Their respective cross-sectional areas should exceed corresponding gate dimensions. At no time should gate thickness exceed that of the casting. Gates are normally severely tapered at the entry point(s) to facilitate removal during trimming with minimal risk of damage to the casting. The greatest progress has...
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
... Abstract Injection molding is a process of forcing or injecting a fluid plastic material into a closed mold. The process generally has the advantages of being more readily automated and of permitting finer part details. Injection-molding compounds are thermoplastic or thermosetting materials...