1. Identify typical temperatures for workshop operations, Temperature for Soldering, brazing, braze welding, welding, Hardening, Tempering and forging.

2. The connecting process is broadly known as welding. The welding can be performed only on metals and polymer materials.

3. Soldering Brazing Welding Soldering Brazing Welding

4. Soldering is the process of joining two agents (Materials) using another jointing agent lead based jointing agent is used to join two agents. This process is take place in the temperature of about (?) 300 0 C to 427 0 C The soldering agents have to be selected taking care not to damage the items to be joined Soldering is the process of joining two agents (Materials) using another jointing agent lead based jointing agent is used to join two agents. This process is take place in the temperature of about (?) 300 0 C to 427 0 C The soldering agents have to be selected taking care not to damage the items to be joined

5. This is the process that is taking place at temperatures above (?) 427 0 C Then there is a requirement of the bonding agent having its melting point above this temperature In this process the widely used bonding agent is an alloy of copper in most cases brass alloys rather than bronze This process is useful to connect different kind of metals such as tool steel to mild steel, copper to steel etc This is the process that is taking place at temperatures above (?) 427 0 C Then there is a requirement of the bonding agent having its melting point above this temperature In this process the widely used bonding agent is an alloy of copper in most cases brass alloys rather than bronze This process is useful to connect different kind of metals such as tool steel to mild steel, copper to steel etc

6. Process of connecting two pieces of materials. Two pieces are heated to their melting points and allow to run together. The required temperature is obtained in three forms namely induction heating, flame and arc. Induction heating is used to weld non-metallic materials as their melting points are comparatively low. Metallic materials as their melting points are very high flames and arcs are used as sources of heat. Process of connecting two pieces of materials. Two pieces are heated to their melting points and allow to run together. The required temperature is obtained in three forms namely induction heating, flame and arc. Induction heating is used to weld non-metallic materials as their melting points are comparatively low. Metallic materials as their melting points are very high flames and arcs are used as sources of heat.

7. Common type of flame used in welding is oxy- acetylene flame. The flame is having temperatures such as high as 3200 0 C. In arc heating process the temperature is high as 3500 0 C to 4000 0 C and at this temperature the metals get white-hot and it gives a very bright light Common type of flame used in welding is oxy- acetylene flame. The flame is having temperatures such as high as 3200 0 C. In arc heating process the temperature is high as 3500 0 C to 4000 0 C and at this temperature the metals get white-hot and it gives a very bright light

8. After performing certain operations upon the metal it develop certain qualities that will make the piece of metal not very suitable for the operations that it intended to be used for. Such bad qualities are relieved from the work piece by alloying it to undergo certain processes which use heat as the main treatment agent. These processes are called heat treatments.

9. Annealing Hardening Tempering Normalizing Annealing Hardening Tempering Normalizing

10. This is the process used to softening the metal. This process improves the machinability of the metal piece. It releases the internal stresses in the metal. In this process three stages are present Heating the metal piece to the required temperature Holding the metal piece at that temperature for period long enough to relieve from the stresses. Cooling slowly to the room temperature The temperature used in this process is depend upon the composition of the metal. It ranges from 760 0 C for Tool Steel to 925 0 C for mild Steel This is the process used to softening the metal. This process improves the machinability of the metal piece. It releases the internal stresses in the metal. In this process three stages are present Heating the metal piece to the required temperature Holding the metal piece at that temperature for period long enough to relieve from the stresses. Cooling slowly to the room temperature The temperature used in this process is depend upon the composition of the metal. It ranges from 760 0 C for Tool Steel to 925 0 C for mild Steel

11. This process is employed to hard the steel piece. Heating the piece to a temperature prescribed by the heat treatment graph depending to the carbon percentage of the steel plate. then suddenly cooling it down to a low temperature well below the critical temperature. critical temperature is at about 700 0 C. Steel piece is cooled down to a temperature about 300 0 C. This process is employed to hard the steel piece. Heating the piece to a temperature prescribed by the heat treatment graph depending to the carbon percentage of the steel plate. then suddenly cooling it down to a low temperature well below the critical temperature. critical temperature is at about 700 0 C. Steel piece is cooled down to a temperature about 300 0 C.

12. The process by which some hardness is removed but keeping the toughness is the tempering. If the steel piece is hardened then it will improve the ductility of the material and it will become unsuitable to be used as a cutting tool which is the most frequently used application of steel in industry. The process by which some hardness is removed but keeping the toughness is the tempering. If the steel piece is hardened then it will improve the ductility of the material and it will become unsuitable to be used as a cutting tool which is the most frequently used application of steel in industry.

13. The term is often used for ferrous alloys that have been heated above the upper critical temperature and then cooled in open air

14. Forging is a manufacturing process involving the shaping of metal using localized compressive forces. Forging is often classified according to the temperature at which it is performed: '"cold," "warm," or "hot" forging.