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Green Sand Metalcasting Foundry News

Review of AFS Glossary Foundry Terms: "Permeability" to "Vent"

Posted by Hill and Griffith Company on Jan 24, 2019 1:22:47 PM

A partial review of The American Foundrymen's Society's Glossary of Foundry Terms from the "Casting Buyer's Guide"

Permeability - The property of a mold material to allow passage of gases.
 
Physical properties - Properties of matter such as density, electrical and thermal conductivity, expansion, and specific heat. This term should not be used interchangeably with '' mechanical properties.''
 
Pig iron - Blocks of iron to a known metal chemical analysis used for melting, with suitable additions of scrap, etc., for the production of ferrous castings.
 
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Review of AFS Glossary Foundry Terms: "Foundry returns" to "Patternmaker's shrinkage"

Posted by Hill and Griffith Company on Jan 8, 2019 5:25:13 PM

A review of The American Foundrymen's Society's Glossary of Foundry Terms from the "Casting Buyer's Guide"

Foundry returns - Metal in the form of gates, sprues, runners, risers, and scrapped castings of known composition returned to the furnace for remelting.
 
Gas porosity - A condition existing in a casting caused by the trap­ping of gas in the molten metal, or by mold gases evolved during the pouring of the casting.
 
Gate (ingate) - The portion of the runner where the molten metal enters the mold cavity. Other gates: bottom -any gating system by which metal enters the mold cavity at the bottom.
 
Green sand - Moist clay bonded molding sand.
 
Heat - A single furnace charge of metal to be used for pouring directly into mold cavities; a heat may be all or part of a master heat.
 
Heat treatment - A combination of heating and cooling operations timed and applied to a metal or alloy in the solid state in a manner which will produce desired properties.
 
Hotbox process - A furan resin-based process which uses heated metal coreboxes to produce cores.
 
Hot tear - Irregularly shaped fracture in a casting resulting from stresses set up by steep thermal gradients within the casting during solidification and too much rigidity of the core or mold material.
 
Inclusions - Particles of slag, refractory materials, sand or deoxida­tion products trapped in the casting during solidifica­tion.
 
Investment casting process - A pattern casting process in which a wax or thermop­lastic pattern is used. The pattern is invested (sur­rounded) by a refractory slurry. After the mold is dry, the pattern is melted or burned out of the mold cavity, and molten metal is poured into the resulting cavity.
 
 
Ladle - A container for molten metal used to transfer metal from the furnace to the mold.
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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, Foundry Supply, Green Sand Release Agents, Metal Casting Supplies, Foundry Supplies, Green Sand Metal Casting, Green Sand System, Green Sand Metalcasting, Glossary Foundry Terms

Review of AFS Glossary Foundry Terms: AQL to Flask

Posted by Hill and Griffith Company on Dec 27, 2018 6:02:16 PM

A review of The American Foundrymen's Society's Glossary of Foundry Terms from the "Casting Buyer's Guide"

AQL - Acceptable Quality Level. A quality level established on a prearranged system of inspection using samples selected at random.

As-cast condition - Casting without subsequent heat treatment.

Backing sand - The bulk of the sand in the flask. The sand compacted on top of the facing sand which covers the pattern.

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Tags: Metal Casting, Green Sand Casting Products, Green Sand Foundry Supply, Foundry Supply, Green Sand Release Agents, Metal Casting Supplies, Foundry Supplies, Green Sand Metal Casting, Green Sand System, Green Sand Metalcasting, Glossary Foundry Terms

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