Workers at the Carborundum Factory Find Black Diamonds

The video tutorial explains the properties and processing of carborundum, a material similar to diamonds, used in abrasives. It covers the steps of crushing silicon carbide, washing and drying the grains, grading them by size, and finally binding them with ceramic clay. Each step ensures the production of high-quality abrasive products.

What makes carborundum products effective as abrasives?

• Their magnetic properties

• Their ability to conduct electricity

• Their diamond-like properties

• Their similarity to gold

What is the first step in processing silicon carbide?

• Washing the grains

• Mixing with bonding agents

• Crushing the crude abrasive

• Grading the grains

Why are the grains washed during processing?

• To increase their size

• To remove foreign matter

• To make them magnetic

• To enhance their color

How are the grains separated during grading?

• By using magnets

• By color sorting

• By sifting machines with silk bolting cloth

• By chemical reactions

What bonding agent is used with carborundum particles in this process?

• Rubber

• Ceramic clay

• Plastic

• Epoxy resin