Download GTU B.Tech 2020 Winter 7th Sem 2172601 Rubber Equipment Design Ii Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2172601 Rubber Equipment Design Ii Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2172601 Date:19/01/2021
Subject Name:Rubber Equipment Design-II
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.



MARKS
Q.1 (a) Give the importance of Chrome plating.
03

(b) Write the properties required for Mold design.
04

(c) Explain the "Thermal consideration" of Transfer molding.
07



Q.2 (a) Write the importance of performer in compression molding.
03

(b) List out the different ejection system used in molding and explain any one.
04

(c) Draw the different design of overflow used in compression molding and
07
discuss the advantages and disadvantages of each.




Q.3 (a) Which are the important aspects while designing the Die?
03

(b) Give the difference between Die and Mold.
04

(c) List out the different design of Die used according to flow of melt and
07
explain each in detail.




Q.4 (a) Which materials are used for die construction?
03

(b) Give the function of Die and Explain the important aspects of die design.
04

(c) Explain the Die Geometry in detail.
07



Q.5 (a) Give the difference of Hot feed and Cold feed Extruder with respect to
03
Processing Factor.

(b) Draw the design of Co rotating and counter rotating twin screw.
04

(c) Explain the action of Screw theory in detail.
07



Q.6 (a) Write a brief note on Pin Type Extruder.
03

(b) Give the difference between Bimetallic liner and Induction Liner.
04

(c) Short note on "Iddon High Intensity Mixing Screw".
07
Q.7 (a) Define the term (1) Sprue Bush (2) Shot capacity (3) Injection Unit.
03

(b) List out the Machine controls and process control variable and explain any
04
one in brief.

(c) Discuss the variations in Injection Molding Techniques in detail.
07


Q.8 (a) How to calculate cycle time in injection molding?
03
(b) Which thing we have to keep in mind while designing space availability in
04
injection mold?
(c) Explain in detail about the FIFO and FILO with respect to Injection
07
molding.
************************
1

---