During the one-year duration of “Welder (GMAW & GTAW)” trade, a candidate is trained on Professional Skill, Professional Knowledge, Engineering Drawing, Workshop Calculation & Science and Employability Skill related to job role. In addition to this, a candidate is entrusted to undertake project work, extracurricular activities and on-the-job training to build up confidence. The broad components covered under Professional Skill subject are as below:-

Trainee learns about elementary first aid, firefighting, environment regulation and housekeeping etc. Performs joining of MS sheet by Gas welding in different positions, Joins MS plates by SMAW in different positions, performs straight, bevel & circular cutting on MS plate by Oxy-acetylene cutting process. The trainee leans joining of different types of MS pipe by Gas welding (OAW), SMAW. The Trainee sets up GMAW/ GTAW plant and weld M.S, S.S and Aluminium sheets in all positions, performs Arc gauging on MS plate, joins MS/ Aluminium /SS sheets/plates by GMAW, GTAW & FCAW process in various positions using different modes of metal transfer. Cuts ferrous and non-ferrous metal using plasma Arc cutting. The trainee tests welded joint by visual inspection Dye penetrant & Magnetic particle testing methods.

Professional Knowledge subject is simultaneously taught in the same fashion to apply cognitive knowledge while executing task. In addition components like Physical properties of engineering materials, different types of iron, properties and uses. In addition to above components the core skills components viz., Workshop calculation & science, Engineering drawing, employability skills are also covered. These core skills are essential skills which are necessary to perform the job in any given situation.

Trades Summery: 

The Directorate General of Training (DGT) under Ministry of Skill Development & Entrepreneurship offers a range of vocational training courses catering to the need of different sectors of economy/ Labour market. The vocational training programmes are delivered under the aegis of Directorate General of Training (DGT). Craftsman Training Scheme (CTS) with variants and Apprenticeship Training Scheme (ATS) are two pioneer schemes of DGT for strengthening vocational training.

Welder (GMAW & GTAW) trade under CTS is one of the courses delivered nationwide through network of ITIs. The course is of one year duration. It mainly consists of Domain area and Core area. In the Domain area (Trade Theory & Practical) imparts professional skills and knowledge, while Core area (Workshop Calculation science, Engineering Drawing and Employability Skills) imparts requisite core skills, knowledge and life skills. After passing out of the training program, the trainee is awarded National Trade Certificate (NTC) by DGT which is recognized worldwide.

Broadly candidates need to demonstrate that they are able to:

• Read & interpret technical parameters/document, plan and organize work processes, identify necessary materials and tools;
• Perform task with due consideration to safety rules, accident prevention regulations and environmental protection stipulations;
• Apply professional skill, knowledge, core skills & employability skills while performing jobs.
• Check the job/assembly as per drawing for functioning, identify and rectify errors in job/assembly.
• Document the technical parameters related to the task undertaken.

JOB ROLE

Welder Gas; fuses metal parts together using welding rod and oxygen acetylene flame. Examines parts to be welded, cleans portion to be joined, holds them together by some suitable device and if necessary makes narrow groove to direct flow of molten metal to strengthen joint. Selects correct type and size of welding rod, nozzle etc. and tests welding, torch. Wears dark glasses and other protective devices while welding. Releases and regulates valves of oxygen and acetylene cylinders to control their flow into torch. Ignites torch and regulates flame gradually. Guides flame along joint and heats it to melting point, simultaneously melting welding rod and spreading molten metal along joint shape, size etc. and rectifies defects if any.

Welder Electric; fuses metals using arc-welding power source and electrodes. Examines parts to be welded, cleans them and sets joints together with clamps or any other suitable device. Starts welding power source and regulates current according to material and thickness of welding. Connect one lead to part to be welded, selects required type of electrode and clamps other lead to electrode holder. May join parts first at various points for holding at specified angles, shape, form and dimension by tack welding. Establish arc between electrode and joint and maintain it throughout the length of the joint.

Gas Cutter; cuts metal to require shape and size by gas flame either manually or by machine. Examines material to be cut and marks it according to instruction of specification. Makes necessary connections and fits required size of nozzle in welding torch. Releases and regulates flow of gas in nozzle, ignites and adjusts flame. Guides flame by hand or machine along cutting line at required speed and cuts metal to required size.

Welder (GMAW & GTAW) while doing Gas Tungsten Arc welding (GTAW) also known as Tungsten Inert Gas (TIG) welding reads fabrication drawing, examines parts to be welded, cleans them and sets joints with clamps or any other suitable device. Selects suitable tungsten electrode, grinds the edges and fit in to the GTA welding torch. Selects gas nozzle and fit in to the GTA welding torch. Selects suitable filler rods and cleans them. Connects work piece with earth cable, Connects the machine with Inert gas Cylinder, regulator and flow meter. Starts the constant current GTA welding machine, sets suitable welding current & polarity and inert gas flow. Establish arc through across a column of highly ionized inert gas between work piece and Tungsten electrode. Melts the metal and deposit weld beads on metal surfaces by passing the suitable filler rod in to the weld puddle. Joins Steel, Stainless steel & Aluminium sheets and Aluminium & SS tubes .

Welder (GMAW& GTAW) while doing Gas Metal Arc welding also known as MIG/MAG Welding, reads fabrication drawing, examines parts to be welded, cleans them and sets joints with clamps or any other suitable device. Connects work piece with earth cable. Connects the machine with suitable gas Cylinder, regulator and flow meter. Connects preheater when CO2 is used as shielding gas. Selects suitable wire electrode, feed it to welding GMA Welding torch through wire feeder. Selects contact tip gas nozzle and fit in to the GMA welding torch. Preheats joints as required. Starts the Constant Voltage GMA welding machine, sets suitable welding voltage & wire feed speed and shielding gas flow, produces arc between work piece and continuously fed wire electrode. Melts the metal and deposit weld beads on the surface of metals or joins metal pieces such as Steel, Stainless steel and aluminium metals. Also will do mixed shielding gas welding. May experience with tubular wire welding called Flux Cored Arc Welding (FCAW)

Plan and organize assigned work and detect & resolve issues during execution in his own work area within defined limit. Demonstrate possible solutions and agree tasks within the team. Communicate with required clarity and understand technical English. Sensitive to environment, self-learning and productivity.

LEARNING OUTCOMES

• 1. Perform joining of MS sheet by Gas welding in different positions following safety precautions.
• 2. Join MS plates by SMAW in different positions.
• 3. Perform straight, bevel & circular cutting on MS plate by Oxy-acetylene cutting process.
• 4. Perform different types of MS pipe joints by Gas welding (OAW).
• 5. Weld different types of MS pipe joints by SMAW.
• 6. Setup GMAW / GTAW plant and weld M.S, S.S and Aluminium sheets in all positions.
• 7. Perform Arc gauging on MS plate.
• 8. Join MS/ Aluminium /SS sheets/plates by GMAW in various positions using different modes of metal transfer.
• 9. Use of mixed shielding gas for GMAW welding.
• 10. Welding of metals by FCAW process.
• 11. Join Aluminium & Stainless Steel sheets by GTAW in different position.
• 12. Weld pipe joints by GTAW.
• 13. Cut ferrous and nonferrous metal using plasma Arc cutting.
• 14. Test welded joint by visual inspection Dye penetrant & Magnetic particle testing methods.

CRAFTSMEN TRAINING SCHEME(CTS)

The Craftsmen Training Scheme (CTS) was introduced by the Government of India in year 1950 to ensure a steady flow of skilled workers in different trades for the domestic industry, to raise quantitatively and qualitatively the industrial production by systematic training, to reduce unemployment among the educated youth by providing them employable skills, to cultivate and nurture a technical and industrial attitude in the minds of younger generation. The Scheme is the most important in the field of Vocational Training, has been shaping craftsmen to meet the existing as well as future manpower need, through the vast network of ITIs spread over various States / Union Territories in the country. The day-to-day administration of ITIs under the Craftsmen Training Scheme was transferred to the State Governments/ Union Territory administrations with effect from the year 1956. From 1st April 1969, the financial control of the Industrial Training Institutes in the States as well as in the Union Territories was transferred to the respective State Governments / Union Territory. The financial assistance was granted to them in the form of bulk grant in consultation with the erstwhile Planning Commission and the Ministry of Finance.

Vocational Training is a concurrent subject of both Central and State Governments. The development of training schemes at National level, the evolution of policy, laying of training standard, norms, conducting of examinations, certification, etc. are the responsibilities of the central government, whereas, day to day administration including an admission in ITIs rests with the respective State Governments / UTs.

Presently, training courses under the Craftsmen Training Scheme are being offered through a network of 15,042 ITIs (Govt. 2,738 + Private 12,304) located all over the country with total trainees enrolled 22.82 lakhs (in the trades of 1 year and 2 year durations) on NCVTMIS portal with an objective to provide skilled workforce to the industry in 138 NSQF compliant trades.