Elements and Performance Criteria
- Prepare equipment
- Die coat is mixed in correct proportion.
- Die temperatures are lifted to, or maintained, at the correct level.
- Appropriate safety clothing and apparatus is used.
- Die coat is applied in correct sequence and in a safe manner according to standard operating procedures.
- Die is correctly located and closed.
- Die is correctly placed on machine, toggle clamps are attached and done up to required torque.
- Air cooling is attached to the die as specified if required.
- Carry out manual pouring
- Pour is made in manner to reduce porosity and lamination.
- Conditions are identified that contribute to inferior castings or rejects.
- Allowance is made for adequate cooling time.
- Pour is made at a continuous and appropriate rate during filling.
- Monitoring of die coating condition is carried out and re-spraying occurs as required.
- Remove materials
- Clean die
- Shot blaster is operated in a safe manner and according to standard operating procedures.
- Chemical analysis of melt is taken and remedial action is applied as required to standard operating procedures.
- Furnace is drossed and/or degassed to standard operating procedures.
- Work area is cleaned of coating and shot residue to appropriate standard.