sand mould BrE technical
sand mold AmE

Sometimes chills may be located on a pattern surface, which are then formed into the sand mould.

This works by injecting liquid aluminium into an upturned sand mould from below.

Bronzes are created by building sand moulds of a plaster original, in itself a skilled and labour intensive job.

After that she saw men making sand moulds, first by hand, and then with machines that looked like giant waffle-irons.

Bronze casting can be done by using a silica sand mould, into which hot liquid bronze is poured.

Prototype sand moulds were produced using this new technique from which the prototype parts were cast.

The sand mould is typically prepared by using a mixture of clean sand and a small proportion of the water-absorbing clay bentonite.

The hardened sand mould is heavy and bulky, must be securely clamped in a very specific position and then subjected to intense heat for several minutes before firing the charge.

Local foundry GPD Developments Ltd in Nuneaton, Warwickshire manufactured the castings using a new method of printing sand moulds directly from computer-aided design (CAD) data.

With gentle pressure and the correct percentage of water the sand grains will bind together and can be used for making a sand mould into which molten metals can be poured from making engineering castings.

A two or three piece hardened sand mould is clamped around the rail ends, and a torch of suitable heat capacity is used to preheat the ends of the rail and the interior of the mould.

Hundreds of families from the local area were working and earning a living at the Stummsche Hüttenwerke by the late 18th century, be it as sand mould makers, pourers, modellers, metal engravers, charcoal makers, ore miners or goods transporters.

In his will over thirty years before, Levett made provisions for his young employee, leaving Hogge four pounds in cash and 'six tonne of sows' (a long piece of cast iron made by running molten metal into a sand mould).

The cover itself would then be cast in a sand mold.

To step into the shop is to go back 100 years; methods of casting pieces in sand molds are still the same.

Break away the sand mold and remove the casting.

A flask can be any size so long as it is larger than the pattern being used to make the sand mold.

They are then extracted from the sand mold and quenched in water, wide end first.

Urn cleaned pieces of the sand mold from the lever.

The pattern itself can be reused indefinitely to produce new sand molds.

After the metal has solidified and cooled, the casting is separated from the sand mold.

Cast-iron pans are created by pouring molten iron into sand molds.

Cast iron heated to 3000 degrees was poured into the sand mold and, when cooled, the form would pop out.

This type of mold gets its name from not being baked in an oven like other sand mold types.

The form is then dug out from the sand mold, sand blasted, cut, ground, and polished.

This type of molding also produces a better surface finish than other types of sand molds.

Lost-foam casting - Polystyrene pattern with a mixture of ceramic and sand mold.

"They melt old cans they dig up on the beach, cast it in sand molds.

The ironworkers used sand molds of three tapering rings, octahedral in shape.

Sand casting - Green or resin bonded sand mold.

The centrifugal casting process was added in the late 1990s as a complement to the green sand mold processes already in place.

He creates fine art castings by pouring molten glass into sand molds, applying heat and then cooling them for months.

V-process casting - Vacuum is used in conjunction with thermoformed plastic to form sand molds.

Another large apse spans a foundry where bells and windchimes are cast in sand molds.

When the iron has solidified the flask is broken apart, destroying the sand mold in the process, to reveal the rough casting.

There are remains of sand mold bricks and brick walls along two sides along with some of the original lintels in the debris.

These X-shaped ingots were cast by local coppersmiths by pouring molten copper into sand molds.

When the pattern is to be removed from the sand mold, there is a possibility that any leading edges may break off, or get damaged in the process.