Содержание
- 2. 1.Welding 2. Forge or Blacksmith Welding 3. Thermit Welding 4. Electric Welding 5. Types of resistance
- 3. Welding is a method of causing fusion between two like pieces of metal to form one
- 4. Forge or Blacksmith Welding Forge welding is a process whereby the two masses of metal to
- 5. Thermit Welding is not a common process. The process consists of a chemical reaction obtained by
- 6. The temperature of the molten metal is high enough to fuse the broken sections, thus forming
- 7. Electric Welding This type of welding is a pressure process, as is forge welding. It consists
- 8. Types of resistance welding are: spot welding; butt welding; flash welding; percussion welding; seam welding; projection
- 9. Spot Welding This process consists of holding two or more metals between suitable electrodes which pass
- 10. Butt-Welding By this process the parts to be welded are gripped mechanically and pressed together while
- 11. Flash Welding This is another type of butt welding, the difference consisting in the method of
- 12. Percussion Welding This process is similar to flash welding inasmuch as it relies upon a sudden
- 13. Seam Welding This a resistance-welding process which consists of passing two or more base metals between
- 14. Resistance – welding process Resistance – welding process
- 15. Seam – welding machine Refrigerators, metal containers , gasoline tanks, automobile mufflers, aircraft fabrications, pipes for
- 16. Projection Welding This process is similar to spot welding and consists of joining two pieces of
- 17. Spot\ Projection Pneumatic Welding machine Projection Welding Electrodes
- 18. Electric Arc Welding This is a fusion-welding process in which surfaces to be joined are fused
- 20. Gas welding In gas welding, the fusion heat (which is very high) is supplied by combining
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