volume - 01 issue: 06 january 2016 content «club

Volume - 01 – Issue: 06 January 2016

CONTENT

«Club Activities

«Student Articles

CONVENER

Mr. M.PALPANDI

IWS Faculty Incharge

OFFICE BEARERS

Mr.P.GokulPrasath, Secretary

Mr.S.EdisonAnandaraj,Joint Secretary

Mr. J. Premkumar, ExeccutiveSecretary

Mr. K. Prabaharan, Treasurer

Mr.R.Aravind,StudentCoordinator

Mr.K.S.SateeshKumar,Student Co-ordinator

Mr.P.Manivannan,Project&Event Co-ordinator

Mr.T.Mathivanan, Project& Event Co-ordinator

Mr.S.Lingeshwaran, Multimedia

Mr.C.Danny Kingsley, Multimedia

IWS BULLETIN October 1,

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Welcome

Dear Students and Staff!

Wish you all a happy and prosperous Diwali!

The department of Mechanical engineering of PSNA College of

Engineering and Technology, Dindigul is delighted to bring out this

newsletter for the staff and student community.

Collaboration between the college and industry is vital role for teaching and

learning of any engineering program. By affirming this truth, the department

of Mechanical Engineering has been organizing a series of programs like

International Technical Seminars, Research Symposium, talks on ongoing

research activities and other related topics from distinguished experts to give

our students a practical insight into Mechanical engineering,

As a first step, we bring out the details of the events that were hosted

in the Mechanical Engineering department since June 2014 to 2015.

We thank our management, Principal, HOD, staff and students for their

sincere support and co-operation in bringing out this successfully.

Have a nice reading.

With regards

(Editor - Department of Mechanical engineering)


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PSNA -IWS BULLETIN

Objectives of Indian Welding Society (IWS)

·To promote the advancement of Welding, Cutting, Reclamation, Hard Facing and related

technologies and other allied sciences which the Society may decide from time to time.

·To facilitate exchange of ideas, information, development work etc. amongst members; by

organizing lectures, workshops, seminars, symposia, conferences and development

programs; publish periodicals, books, journals, and magazines; and develop software

and educational programs, video films and training packages relating to the objectives

of the Society.

·To offer flexible classroom/distance learning programs in various aspects of welding &

related technology that suit the requirement of various levels. To promote professional

exchange of information, experience and advanced training within and among various

countries across the globe.

·To promote professional exchange of information, experience and advanced training within

and among various countries across the globe. To admit any person(s) to be Honorary

Member(s) of the Society on such terms and to confer on them such rights and

privileges, as may seem expedient.

·To approach, negotiate, confer with and/or act in any advisory capacity Government,

Municipal and Local Authorities, and various economic segments/industries with respect

to the objects covered by this Memorandum with a view to offer consultancy / advice to

industry and other segments of the country's economy.

·To give awards, scholarships, fellowships, and grants to individuals/teams of professionals

and organizations in regard to specific projects in various spheres of welding & related

technology directly or in association with other professional organizations having similar

objectives.

·To amalgamate with, affiliate to, become a member of, to subscribe to, and to

communicate and co-operate with any other Scientific Society / company and other

concerned bodies and promote measures for the furtherance of mutual objects and to


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promote any Company or Association or Society or Institution for the purpose of

acquiring all or any of the property, rights and liabilities of this Society, or for any other

purpose which may be directly or indirectly calculated to benefit this Society or to carry

out its objects or any one of them.

· To make such rules, regulations and bye-laws as may from time to time be necessary for

carrying out the above objects or otherwise.

·To make efforts to introduce Energy efficient and non-polluting technologies for a cleaner

environment.

·To provide Training and education of rural youth to help them settle for a quality Life.

·To promote any other activity incidental to the above objects but not involving the carrying

on of any activity for profit as the Governing Council from time to time determine.

·The objects of the Society extend to all States and Union Territories in India.


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SOCIETY ACTIVITIES

Indian Welding Society inauguration 2015-2016 Date: 15/09/2015 Day: Wednesday Time: 11:00 AM Place: Civil-Mech Auditorium, PSNACET Chief Guest: Dr.N.Raju

The Department of Mechanical Engineering, PSNA COLLEGE OF ENGINEERING AND

TECHNOLOGY, Dindigul has organized the inaugural function on the 2015-2016 academic year

of INDIAN WELDING SOCIETY on 15th September, 2015 at Civil-Mechauditorium, PSNACET.

In the Inaugural Function,Mr.P.GOKULPRASATH,Secretary of INDIAN WELDING

SOCIETY,PSNACET has given the welcome address.,Dr.D.VASUDEVAN,prof and Head

Department of Mechanical Engineering,PSNACET has given the Introduction to INDIAN

WELDING SOCIETY, Dr.N.Raju, Deputy General Manager of WRI,BHEL,TRICHY has graced

the occasion as the Chief Guest while Dr.V.SOUNDARARAJAN, Principal of PSNACET has

given the Presidential address,Dr.R.KANNAN,Professor of the Department of Mechanical

Engineering,PSNACET has given the Introduction to the chief guest, Mr.M.PALPANDI,faculty

Incharge of IWS STUDENT CHAPTER has given the introduction to office bearers and

Mr.S.EDISONANANDARAJ,Joint secretary of INDIAN WELDING SOCIETY,PSNACET has

given the vote of thanks for the function.


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Welcoming the chief guest and dignitaries,

The secretary of INDIAN WELDING SOCIETY, PSNACET had presented the welcome address

for the inaugural function


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.

HOD Dr.D.VASUDEVAN has given the Introduction to welding and advised the students to

upgrade and update themselves in the recent trends in welding.


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Dr.V.SOUNDARARAJAN, Principal, PSNACET presided over the function. In his presidential

address he mentioned that soft skills and hard work are two important aspects for existence of

students in the industry.


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The Chief Guest Dr.N.Raju, during his inaugural speech, advised the students to spend more

time in the preparation of core and elective subjects and asked them to clear all the subjects

and earn a first class degree for aiming a good position in the core industries. During the

interaction session, Chief Guest also shared valuable information about fundamentals of

welding and non destructive testing concepts with implementation of projects and also shared

safety rules and regulations in welding industries.


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Dr.R.KANNAN, Professor of Mechanical department has given the Introduction to chief guest.


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Mr.M.PalPandi, Faculty Incharge of IWS STUDENT CHAPTER has given the introduction to

office bearers list.


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Student joint Secretary Mr.S.Edison Anandaraj proposed the vote of thanks for the function.


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More than 150 students and faculty members attended the function.


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GUEST LECTURE-1

A guest lecture on “RECENT TRENDS IN WELDING AND ITS APPLICATION” was organized

on SEP 15, 2015 by IWS, in which more than 100 students from Mechanical department

participated. Dr.D.VASUDEVAN welcomed the gathering and highlighted the importance of

welding to the participants.

The presentation given by Dr. N.RAJU explained the needs of welding, types and recent

technologies used in automotive, aerospace and various industrial areas.


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STUDENT ARTICLE Presented by

M. JEGADEESWARAN, S. LINGESHWARAN

III B.E-MECHANICAL ENGG,

WELDING

Welding is a process for joining similar metals. Welding joins

metals by melting and fusing. The base metals being joined

the filler metal applied with the help of heat, sometimes with

pressure.

INTRODUCTION TO ARC WELDING

Arc welding was first developed when Nikolai Benardos

presented arc welding of metals using a carbon electrode at the

international exposition of electricity, Paris in 1881, which was

patented together with Stanislaw Olszewski in 1887.


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TYPES:

Gas metal-arc welding

Metal inert gas welding

Plasma arc welding

Shielded –metal arc welding

Submerged arc welding

Tungsten inert gas welding


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WHAT IS ARC WELDING?

Arc welding is a type of welding that uses a welding power

supply to create an electric arc between an electrode and base

material to melt the metals at the welding point. They can use

either direct (dc) or alternating (ac) current, and consumable or

non-consumable electrodes.


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EQUIPMENTS FOR ARC WELDING

ØAC or DC ARC WELDING MACHINE (POWER SOURCE)

Ø ELECTRODE WITH ELECTRODE HOLDER

Ø WELDING LEADS

Ø EARTHING CLAMP

Ø CONNECTOR

Ø FACE SHIELD

Ø CHIPPING HAMMER


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GAS TUNGSTEN ARC WELDING:

It is a manual welding process that uses a non-consumable

electrode made of tungsten, an inert or semi inert gas mixture,

and a separate filler material.


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PLASMA ARC WELDING:

This type of arc welding also uses tungsten electrode but uses

plasma gas to make the arc. The arc is more concentrated than

the GTAW arc, and this method can be used on wider range of

material thicknesses than can the GTAW process and is much

faster, except magnesium


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UNDERWATER ARC WELDING:

It’s a type of welding where the diver has a tank of nitrogen or

argon and blows a big bubble of gas around the spot that is

welded. Inside the bubble, welding is performed in usual

fashion. Some welding techniques do not require gas bubble

because the burning electrode produces enough gas. Water

proof electrodes are required.


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WELDING POWER SUPPLY:

Arc welding usually requires high current (over 80 amperes)

and it can need above 12, 000 amperes in spot welding. Lower

current can also be used.


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Underwater, directly exposed to the wet environment. In dry

welding a dry chamber is created near the area to be welded

and the welder does the job by staying inside the chamber.

ARCWELDING ELECTRICAL TERMS:

vELECTRICAL CIRCUIT

v DIRECT CURRENT(DC)

v ALTERNATING CURRENT(AC)

v AMPERE

v VOLT

v RESISTANCE

v OHM'S LAW

vCONSTANT POTENTIAL

v CONSTANT CURRENT

v VOLTAGE DROP

v OPEN CIRCUIT VOLTAGE


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v ARC VOLTAGE

v POLARITY

v WATT

LIGHT AND HEAT RADIATION:

V Electric arc welding and cutting processes produce three

forms of radiation:

Ø ULTRA VIOLET (UV)

Ø VISIBLE

Ø INFRA RED (IR)

v Arc welding therefore presents a greater hazard than fuel

gas processes as these only produce visible and IR radiations .


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RADIATION HAZARDS AND EYE INJURY:

V Arc welding and cutting and fuel gas processes can be

damaging to unprotected skin and eyes.

v Erythema and burning of skin.

v Radiation from arc welding includes eye damage.

ø Arc eye(from UV radiation)

ø Cataracts(from UV & IR radiation)

ø Retinal burns(from visible or IR radiation).

SAFETY PRECAUTION:

All installation, operation, maintenance and repair work should

be performed only by qualified people. Electric shocks can kill.

Use dry insulation when welding in damp location. Never dips

the electrode holder in water for cooling. Fumes and gases can

be dangerous to human health. Remove fire hazards well away

from the area of welding.


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ADVANTAGES OF ARC WELDING MACHINE:

V It’s simple as comparing to other welding process.

V Cost of equipment is very low.

V Portable welding machine is available.

V Various types of metal and their alloys can be welded.

V Welding can be carried out in any position.

V High deposition of penetration can be achieved.

APPLICATION FOR ARC WELDING:

v Shipbuilding industries

v Pipes and penstocks joining

v Construction work

v Building industries

v Automobile and aircraft industries

v Boiler,chemical,fertilizer industries,etc.

volume - 01 issue: 06 january 2016 content «club

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