Submerged arc welding
Submerged arc welding (SAW) is an arc welding process that uses a continuous consumable bare wire electrode. The arc shielding is...
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Jun 3, 20212 min read
Gas metal arc welding or metal inert gas welding
This method is also known as Shielded Inert Gas Metal Arc (SIGMA) welding or Metal Inert Gas (MIG) welding or Gas Metal Arc Welding...
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Jun 1, 20213 min read
Oxy-acetylene gas
Oxy-acetylene welding will use for welding of wide selection of metals. Acetylene mixed with oxygen and then burnt under a controlled...
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May 31, 20211 min read
Pressure die casting
The liquid metal is injected into the mold under high pressure and allowed to solidify at the high pressure. It is common for Al, Zn and...
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May 31, 20212 min read
Shell moulding
Shell mould casting method makes use of moulds made of relatively thin shells about 6 mm thick for casting. The shells are made from clay...
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May 31, 20213 min read
Blast furnace
WORKING : The Iron Ore, Coke and Limestone, (the Charge), is conveyed to the top of the Furnace. The Charge is stored in Bells till the...
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May 31, 20214 min read
Cupola furnace
A cupola may be a vertical cylindrical furnace equipped with a tapping spout neat its base. Cupolas are used for melting cast irons. It...
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May 31, 20214 min read
Sand testing
The following tests are performed to judge the molding and casting characteristics Moisture content Clay content Test Fineness test...
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May 28, 20212 min read
Co2 moulding process
In this method the sand molding mixture is hardened by blowing gas over the mold. This process is favored by hobby metal casters because...
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May 28, 20211 min read
Stir casting
It is a liquid state composite material fabrication method during which a dispersed particles like ceramic particles, short fibers are...
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May 27, 20213 min read
Pattern, function of pattern & types of pattern
PATTERN : During the casting method pattern is that the primary tool . It’s the copy of the object to be created by the casting method...
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May 27, 20213 min read
Centrifugal castings
It works on fundamental principle of centrifugal force on a rotating part. During this method a mould is rotated regarding its central...
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May 21, 20212 min read
Investment castings
The investment casting method begins with the production of wax replicas of the specified castings. These replicas referred to as...
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May 20, 20212 min read
Pattern allowances
A Pattern is often made larger than final casting as a result of it carries certain allowances due to metallurgical and mechanical...
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May 19, 20212 min read
Properties of moulding sand
The following are the properties of mould sanding. Strength Permeability Grain size & shape Thermal stability Refractoriness...
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