welding

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Across
  1. 2. High quality arc welding process
  2. 4. controls arc length
  3. 7. essential for human life
  4. 8. colorless highly flammable gas
  5. 11. portable welding process using electrodes
  6. 14. trapped gas causing cavities
  7. 15. hand covers
Down
  1. 1. long bendable metal
  2. 3. cleaning and shielding material
  3. 5. inert noble gas
  4. 6. high temperature flame machine
  5. 9. electrical conductor
  6. 10. high temperature electrical discharge
  7. 12. lustrous dense solid material
  8. 13. welding process using a continuous wire feed