- 1 Types of Casting Tools
Types of Casting Tools
Types of foundry or casting tools and equipment used in foundry shops are used for carrying out different operations. such as sand preparation, pouring, molding and casting. These tools are classified as hand tools and conditioning tools. They are; flasks, power-operated equipment, metal melting equipment, and fettling and finishing equipment.
Sand casting tools are mostly used in molding operations, sand conditioning tools are basically used for preparing different types of casting sands. and core sand. Flasks are commonly used for preparing sand molds and keeping molten metal. The followings listed below are types of sand casting tools:
hand riddle is a type of foundry tools generally used for cleaning sand. They are used for separating sand and another object that serve as obstacles when molding. Materials such as nails, splinters of wood, short metals etc. hand riddle consist of a circular wide wire mesh equipped with a circular frame.
shovels are other types of casting tools that consist of a customize sheet metal or steel pan with a wooden handle. They are used for moving or transferring the molding sand into the container, molding box or flask. Shovels are basically used for mixing, tempering and conditioning the foundry sand by hand. The shovel should be maintained by keeping it clean.
Rammers are available in different types. They are used for repairing or arranging the molding sand that looses from the mold. These types of sand casting tools are used to pack or compact the uniformly around the pattern.
Types of rammer:
- Hand rammer: is generally made of wood or metal. It is portable and one end which carries a wedge type construction. It is used for ramming the sand in bench moulding work.
- Peen rammer: is generally used in packing the moulding sand in pockets and corners. Peen rammer has a wedge-shaped construction with a metallic rod at the bottom.
- Floor rammer: floor rammer is heavy and layers when compared with hand rammer. It consists of a long steel bar with a peen at one end and a flat portion on the other. Floor rammer is used in floor molding for ramming sand for larger molds.
- Pneumatic rammer: this type of rammer is used for making large molds just as floor rammer. It eases work, save time and reduces hard labor.
sprue pin is used to produce a vertical hole in a sand casting. It is made of wood, metal or tapered rod. It is pushed in cope to join the mold cavity and produces a cylindrical or conical shape in the molding sand.
Strike of bar
strike bars are sand casting tools that are made of iron and wood. they are used to remove or strike off excess sand from the top of a molding box. It is made of the flat bar having a straight edge.
Mallets is a sand casting tools used in driving the draw spike into the pattern. It’s also used for rapping in order to easily separate the mold from the pattern from leaving the mold cavity. Causing it not damage the mold surface. Generally, mallet used in carpentry or sheet work.
Draw spike is a tapered steel rod having a screw head on the end and a loop or ring at the end. It is used for driving into a pattern which is embedded in the molding sand and reps the pattern. In order to get separate from the pattern and finally draws it out from the mold cavity.
Vent rods is another type of casting tools made of a round-headed wooden handle and a pointed edge. At the end made of wire of thin spiked steel rod. It is used after utilizing ramming and striking of excess sand to produce a series of small holes in the molding sand in the cope portion. The holes pierce allows the steam and gases produced during the pouring process and solidifying stage to escape.
Lifter is also known as cleaners or finishing tools. It’s used for cleaning, repairing and finishing the bottom and sides of the deep and narrow opening in the mold. The lifter is made of thin sections of steel of various length and width one end bent.
These types of foundry tools are used for finishing flat surfaces and joints and partings lines of the mold. It’s made of the metal blade made of iron and with a wooden handle. It’s also used in guts and repairs the mold surfaces.
Slicslick are types of foundry tools that are generally used for repairing and finishing molds surfaces and their edges. It’s done after the withdrawal of the pattern. The common types of slicks are heart and leaf, square and heart, spoon and bead and heart spoon. Their nomenclature is largely due to their shapes.
Smoother are given a different name according to their names. It is generally known as finishing tools used for repairing and finishing flat and round surfaces, round or square corners and edges of
Swabs are small hemp fiber brush used for moistening the edges of sand mold surface and pattern. It is also used for coating the liquid blacking on the mold faces in dry sand molds.
the spirit level is used by molder to check whether the sand bed or molding box is horizontal or not.
Gate cutter is made of a small shaped sheet metal commonly used for cutting runners and feeding gates for connecting spruce hole with the mold cavity.
Daggers are made of pieces of wire or rods bent at one or both ends which are used for reinforcing the downward projecting sand mass in the cope.
Bellows are used to blow away the loose or unwanted sand from the surfaces of the mold cavity.
Clamp, cutters and wedges
they are made of steel used for clamping the molding boxes firmly together during pouring.
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Advancement in technology has Improved on foundry equipment, modern foundries are heavily mechanized in the sense that one machine contains all equipment and can perform multi operations including, pattern and core making, casting and molding. These components include a large melting furnace, cranes, forklifts, ladies, conveyors and transfer vessels.