Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 7th Sem New 2172107 Surface Coating Technology Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2172107 Date: 26/11/2019
Subject Name: Surface Coating Technology
Time: 10:30 AM TO 01:00 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) State the requirements of the coating by giving examples of
suitable application.
03
(b) Describe the following methods:
1) Shot blasting and
2) Hydro-blasting.
04
(c) Explain the scope and importance of surface engineering for
different engineering materials.
07
Q.2 (a) Explain the importance of surface preparation. 03
(b) Discuss the steps of chromating process with neat sketch. 04
(c) Explain the process of phosphating on carbon steel. Discuss the
mechanical and chemical properties developed on surface and its
application in industries.
07
OR
(c) Explain Anodizing as a method of corrosion prevention along with
the essential process parameters. Discuss the role of oxide film in
Aluminium anodizing.
07
Q.3 (a) State principle of Electro-less Plating along with the applications
for the same.
03
(b) Explain various factors affecting Electrodeposition. 04
(c) Define Galvanizing. Draw a process layout of Hot dip Galvanizing
of carbon steel sheets.
07
OR
Q.3 (a) Explain Sputtering using schematic. 03
(b) Explain use of ion beam implantation in surface modification. 04
(c) What is Physical Vapour Deposition (PVD)? Discuss evaporation
method of PVD.
07
Q.4 (a) Define pickling. State purpose of pickling and give name of
pickling chemicals.
03
(b) What is passivation? Why is it required for stainless steels? 04
(c) What are surface metal matrix composites? Explain friction stir
processing method to manufacture the same.
07
OR
Q.4 (a) List examples of components made using thermal spray coatings. 03
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2172107 Date: 26/11/2019
Subject Name: Surface Coating Technology
Time: 10:30 AM TO 01:00 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) State the requirements of the coating by giving examples of
suitable application.
03
(b) Describe the following methods:
1) Shot blasting and
2) Hydro-blasting.
04
(c) Explain the scope and importance of surface engineering for
different engineering materials.
07
Q.2 (a) Explain the importance of surface preparation. 03
(b) Discuss the steps of chromating process with neat sketch. 04
(c) Explain the process of phosphating on carbon steel. Discuss the
mechanical and chemical properties developed on surface and its
application in industries.
07
OR
(c) Explain Anodizing as a method of corrosion prevention along with
the essential process parameters. Discuss the role of oxide film in
Aluminium anodizing.
07
Q.3 (a) State principle of Electro-less Plating along with the applications
for the same.
03
(b) Explain various factors affecting Electrodeposition. 04
(c) Define Galvanizing. Draw a process layout of Hot dip Galvanizing
of carbon steel sheets.
07
OR
Q.3 (a) Explain Sputtering using schematic. 03
(b) Explain use of ion beam implantation in surface modification. 04
(c) What is Physical Vapour Deposition (PVD)? Discuss evaporation
method of PVD.
07
Q.4 (a) Define pickling. State purpose of pickling and give name of
pickling chemicals.
03
(b) What is passivation? Why is it required for stainless steels? 04
(c) What are surface metal matrix composites? Explain friction stir
processing method to manufacture the same.
07
OR
Q.4 (a) List examples of components made using thermal spray coatings. 03
2
(b) Explain the advantages offered by surface metal matrix
composites over metal matrix composites.
04
(c) Discuss about different spray guns that can be used in thermal
spray coating. Explain effect of spray gun on coating structure
and properties.
07
Q.5 (a) Suggest type of surface treatment needed for removing Tarnishing
on Silver ornaments.
03
(b) Critically compare Pack Carburizing and Liquid Carburizing. 04
(c) Describe carbonitriding process in detail. List the components
that are subjected to the same.
07
OR
Q.5 (a) Discuss Plasma Spray Coating process with neat schematic. 03
(b) Compare the Chromizing and Aluminizing diffusion coating
methods.
04
(c) Discuss a case study for surface coating/modification for
designing gear assembly (made of low alloy steel with 0.15% C,
1% Cr, 0.5% Si and 1% Mn) in the car. Suggest a technique,
explain and justify the same.
07
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This post was last modified on 20 February 2020