Download GTU BE/B.Tech 2018 Winter 4th Sem New 2143407 Mould Manufacturing Technology Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem New 2143407 Mould Manufacturing Technology Previous Question Paper

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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?IV (NEW) EXAMINATION ? WINTER 2018
Subject Code:2143407 Date:22/11/2018

Subject Name:Mould Manufacturing Technology

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

MARKS

Q.1 (a) What is wall thickness of a plastic product? Why it is important. 03
(b) Explain the nomenclature of standard outside micrometer with neat
sketch.
04
(c) Explain different types of materials used for mould construction. 07

Q.2 (a) What is CMM and its applications 03
(b) Write a short note on beryllium copper alloy 04
(c) Explain carburizing technique 07
OR
(c) Explain cryogenic treatment process. 07
Q.3 (a) Name different types of non-metallic materials used for mould
construction
03
(b) What is mould polishing? What are the factors which affects the polish
ability of mould?
04
(c) Explain the procedure for preparing the quotation/costing for a mould. 07
OR
Q.3 (a) What are the applications of pantograph in mould construction? 03
(b) Explain the precautions to be taken while performing mould assembly 04
(c) Explain the working principle of Wire-EDM with neat sketch 07
Q.4 (a) What is a. Cutting velocity b. Feed rate c. Depth of cut 4.R.P.M 03
(b) Write a short note on chrome plating. 04
(c) Explain the working principle of CNC-Lathe machine?
How many axis does CNC lathe posses
07
OR
Q.4 (a) Name measuring techniques used or measuring angles. 03
(b) What is chemical etching and what is its role in mould manufacturing? 04
(c) Explain the working principle of Dial-gauge and Slip gauges with neat
diagrams.
07
Q.5 (a) What is the role of CNC Machines in mould making? 03
(b) Explain vacuum hardening heat treatment. 04
(c) Explain the working principle of EDM-machine with neat sketch. 07
OR

Q.5 (a) Write a short note on mould maintenance 03
(b) Write a short note on ZINC-based alloys. 04
(c) What is rapid prototyping? Explain stereo lithography technique 07

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