Rubber Equipment Design — Winter 2022

Explain the importance of Parting Line while designing a mould.

List the factors affecting design of mould.

Show different roll configurations for calender machine and discuss about the same.

Write the assumptions given by Ardichvilli for the calculation of roll separating force for calender.

List the compounding related problems for calender machine with their possible causes and remedies.

What steps you will take to avoid accidents on a rubber mixing mill?

Describe in detail about ram construction for internal mixer.

Define the term fill factor. Write the range of fill factor with justification.

List the basic requirements for successful operation through die.

Write the short note on extrusion barrel construction.

Write the function of brake shoe and reduction pulley in mixing mill.

Discuss about the effects of screw and barrel temperature on rubber compound.

Write short note on High Intensity Mixing Screw used in Rubber industry.

Give the detailed description for the mechanical press having following designation: S V A 2 – 1000 + 600 – 1800 x 1600

Describe any two ram driving mechanisms with diagram for press.

Explain the pressure consideration related to transfer moulding.

Write in brief about the gap frame press.

The weight of a 350 mm plunger of an accumulator is 4500 kg. What additional weight is to be placed upon it to develop a hydraulic pressure of 42kg/cm2?

Which points should be kept in mind while designing the runner in transfer mould? Explain each point in detail.

Write about “Ejection” Process for compression nould.

Write in brief about cryogenic deflashing.

List the injection moulding machine variables which influence mould filling. Explain all in detail.

Define the term (i) Compression Ratio (ii) Starts (iii) Lead.

Discuss about Strength of the Cavity and Guide system design for compression mould.1

Discuss the machine control & process variables for injection moulding machine used in rubber industry.