Good Design Practices

Question 1

What5 things should you consider when casting

Answer 1

• Consider material flow and mould strength
• Avoid concentrations of mass – residual stresses
• Avoid distortion and shrinkage cavities/porosity – i.e. defects
• Allow for removal of pattern
• Avoid cores or use simple cores

Question 2

What 2 things should you consider when Joining

Answer 2

• Moving away from stress raisers will improve strength

* Consider thermal contraction of welds which will cause distortion and defects

Question 3

What 3 things should you consider when machining

Answer 3

• Provide for holding of parts, tool access and tool recess
• Design for ease of, or reduction of, machining
• Design for ease of assembly