Explain forging process used to manufacture the spanners.
Answer: Forging process used for production of spanner:
1) Fullering -The heated stock is elongated by reducing its cross section in first die.
2) Edging- The metal is redistributed, increasing the cross section at certain places and reducing at others as required filling the cavities of the die.
3) Blocking - General shape is given in first blocking die.
4) Impression die- Finished shape is given to forging in final impression die.
(5)Trimming: Flash is removed
(6) Heat treatment and machining is done as per requirement.