1. Engineering
  2. Mechanical Engineering
  3. 10 q1 a high amount of porosity is not wanted...

Question: 10 q1 a high amount of porosity is not wanted...

Question details

10% Q.1.) (a) High amount of porosity is not wanted in powder metallurgy parts, why? Because (b) However, give two different examples where porosity is wanted in aPM metal part. and 16% Q2.) A steel pulley will be produced (Fig.1 It is used to pull a steel cable at a max load of 1000 Kgs. Three different processing methods are discussed: (A) The pulley will be either cast into shape, or (B) It will be cut and machined from a hot rolled cylindrical block, or (C) It will be hot forged to shape after casting. (a) As far as the yield strength of the pulley is concerned, the method A or C will be more suitable? The method would be more suitable. B or C will be more suitable? The method (b) As far as the toughness o the pulley is concerned, the method (c) As far as the cost of the pulley is concerned, the method A, B or C will be more suitable? The method would be more suitable. would be more suitable. (d) In another application, there is a quick wear in the pulley. Which mechanical property given below can give an indication for maximum wear resistance? (m) Ductility (n) Ductile to Brittle TT (o) Hardness (p) Yield Strength (q) Fatigue life. The most important property is that reflects maximum wear resistance is
Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution