ROBAR Capabilities Foundry MOLDS

Patterns • Molds • Melting • Core • Sand • Heat Treat • Coating • Light Forging • Rubber Gaskets





Automatic Matchplate
Casting size to 13" x 17" x 8", up to 75 lbs; mold size 16 x 20 x 6/6"

Automatic Matchplate
Casting size to 23" x 17 x 10", up to 125 lbs; mold size 20 x 26 x 10/10"


Rolloff semi-mechanized

Cope and Drag Casting
size to 20" x 22", up to 200 lbs. Flask size 24 x 26 x 10/10"

Rolloff Cope and Drag Casting
size to 30" x 32", up to 500 lbs. Flask size 32 x 36 x 17/17"

Floor Molding
Casting size 50" x 50" up to 1,000lbs

No Bake
Casting up to 1,000 lbs







Sand molds are made by both automatic and jolt-squeeze machines. The molding sand is supplied to the machines by an overhead belt conveyor. Excess and spilled sand is removed by conveyors under the floor and returned to the Sand Reclamation System.

ROBAR has two Fully Automatic Molding Machines;
the B&P 1620 (small) and the B&P 2026 (large).

Operator may need to place cores into the molds but otherwise, they monitor the machine and handle mold cars and distribute completed molds. It is a high production process used for making large numbers of castings.

These machines use aluminum matchplate patterns. The machine moves the pattern into the forming area and special flasks (boxes) close around it. Sand is then injected by air under high pressure. The sand is compacted around the pattern. The flasks are separated vertically by the machine and the finished mold is ejected. The whole process can take as little as 30 seconds. If cores are required a few seconds are added when the Molding Operator places the cores in position.


Two other machines are Manual Jolt-Squeeze Machines;
the BMM CT-3 (small) and the BMM CT-5 (large)

Operators of these machines have a more active role. The machines compact sand, but moving the mold flasks and placing sand is a manual operation. They are ideal for smaller production runs or for larger jobs with more detailed core work.

These machines can use less expensive patterns than the automatic machines. The operator makes a mold by indexing (exactly positioning) a molding box over the pattern. The operator then places sand into the box (flask) by opening a chute above the mold and then uses the machine to compact the sand.

The operator first makes the bottom half of a mold (Drag), then makes the top part (Cope). If cores are used, they are placed into the Drag, then the Cope is located onto the Drag and the mold is clamped together for pouring. The Cope is accurately registered onto the Drag by means of Locating Pins. The parts of the mold are clamped securely together to prevent molten metal from escaping when the mold is poured.

This process is slower than the automatic machines. It takes from 7-12 minutes on the CT-3 and up to 20-30 minutes on the CT-5 to make a mold.


ROBAR uses a Green Sand process.

The sand is not actually green, but black. Green Sand is a foundry name for this type of sand. It is not dirty. It is basically silica sand that has some clay, a little water and some organic binders in it. The silica sand starts out white, but the binders (ordinary wood and cereal flour) "carbonize" or turn black when exposed to the molten metal during the pouring process. This gives the sand its distinct color and smell.

The molding sand is recycled through the Sand Reclamation System.

The sand is cleaned and refreshed in this process.

The final mixing and wetting preparation is in the Sand Muller.

Our sand muller is a Beardsley & Piper 85-B Speedmullor. It delivers up to 2,000 pounds of prepared sand in a minute. Current production rates require about 1,600 pounds per minute. That's equal to 3,800 wheelbarrow loads per day. In the future, demand will increase when an automatic mold handler is installed for the B&P 2026.

The molding sand is recycled and reused. In a typical day the whole system is rotated about once per shift (twice per shift before the new Sand Reclamation System was installed).

The sand grains are worn down in the process so ROBAR
currently purchases about 1,200 tons of new sand each year.

Patterns • Molds • Melting • Core • Sand • Heat Treat • Coating • Light Forging • Rubber Gaskets

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Robar Industries Ltd.CALL for Information: 604.591.8811 - Toll Free 800.663.6553

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