Basic Forming Processes Suitable for Materials

Sand Casting

Sand casting, also known as sand molded casting, is a metal casting process characterized by using sand as the mold material. The term "sand casting" can also refer to an object produced via the sand casting process. Sand castings are produced in specialized factories called foundries. Over 60% of all metal castings are produced via sand casting process.

What are some advamtages of sand casting?

Research some disadvantages of sand casting.

List some products made from sand casting.

Rolling

In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness, to make the thickness uniform, and/or to impart a desired mechanical property. The concept is similar to the rolling of dough. Rolling is classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallization temperature, then the process is known as hot rolling. If the temperature of the metal is below its recrystallization temperature, the process is known as cold rolling.

Extruding

Extrusion is one type of metal forming operation where dies are used to change the shape of the metal piece by the help of external force which is compressive in nature. By this process, we can make any type of complex shape quite easily.

Advantages of Extrusion Process:

The extrusion process is widely used to create a complex profile of materials within the least time as compared to other metal forming process. The extrusion process is very useful to work with brittle and ductile materials.

Cutting

Metal cutting is “the process of removing unwanted material in the form of chips, from a block of metal, using cutting tool”. A person who specializes in machining is called a machinist. A room, building or company where machining is done is called a Machine Shop.

Name 10 different tools used to cut metal.

Give an advantage and disadvantage for each tool.

What are the methods of joining metals together

In all kinds of metalwork a knowledge of how metals may be joined together is essential. Joints are either permanent or temporary. Permanent joints can be made by welding, brazing, silver soldering, soft soldering, folding, riveting.

Watch the video and answer the questions below.

Write a brief description of soft soldering.

Write a brief description of brazing.

Write a brief description of arc welding.

Write a brief description of MIG welding.

Write a brief description of TIG welding.