List advantages of Injection Molding.
[3 marks]List disadvantages of Injection Molding.
[4 marks]Define Nozzle. Explain standard Nozzle with neat sketch.
[7 marks]Define (1) Maximum Daylight (2) Plasticizing capacity (3) Suck Back
[3 marks]Define (1) L/Dratio (2) compression ratio (3) helix angle (4) pitch
[4 marks]Compare: Injection Molding of Thermoset and Injection Molding of Thermoplastic
[7 marks]Write down Causes and Remedies for: (1) Weld Lines (2) Burn marks
[7 marks]What is Nitriding? List various Nitriding process for screw.
[3 marks]List advantages of Nitriding.
[4 marks]Explain PVT diagram for Injection Molding Process.
[7 marks]List the types of clamping system. Define clamping force.
[3 marks]Calculate the clamping force in ton for the product having projected area 400 cm2 and cavity pressure is 476 bar.
[4 marks]Explain start up, running and shut down process for Injection Molding of Thermoplastic.
[7 marks]How melting occurs in screw? Explain in detail.
[3 marks]List Auxiliary equipment used in Injection molding process.
[4 marks]With the help of graph, explain Injection Cycle.
[7 marks]Explain about fluid heated barrel for Injection Molding of Thermoset.
[3 marks]Draw screw for Injection Molding of Thermoset. Label its terminology.
[4 marks]Explain need of chilling plant in Injection molding processing unit. Explain working of chilling plant with neat sketch.1
[7 marks]What is preheating? Why Nylon required preheating before processing?
[3 marks]List the types of Injection machines by Injection component or “End”
[4 marks]Explain Reciprocating type Injection Molding process with neat sketch.
[7 marks]Explain in brief about Nozzle alignment.
[3 marks]Compare: Hydraulic Clamping and Toggle Clamping
[4 marks]List the specification for Reciprocating screw type Injection Molding machine.
[7 marks]