Mig Welding Basics that Your Welders Must Master (Part 1)

Below are important Mig welding basics that welders must grasp as tightly as possible.

Helpful information for those who are interested in:

8 Useful Tips for Mig Welding

Mig welding is the most popularly used of the arc welding processes, suited for everything from small fabrications, repairs to large structures, shipbuilding, and robotic welding. Mig can be applied in a wide range of materials and thicknesses. Importantly, your Mig welders grasp those Mig welding basics to serve well their work, and refine their skills in this widely used welding process to produce more qualified welds and further their career. 

What is Mig welding?

Mig (Metal Inert Gas) is also referred to as GMAW (Gas Metal Arc Welding). This is the most widely welding process in the world for various reasons. It is fast, cost effective and welders can be easily trained to create quality work.

You may also be interested in:

What is Your Definition of Mig Welding?

Gas or flux

The welding process creates extreme amounts of heat that breakdown chemicals in the air into smaller molecules. Those substances then can contaminate the weld. 

The process generates a small electromagnetic field, which can also contaminate the weld. Weld contamination may (not) be visible to naked eye after the weld is finished. That’s why the weld can fail or show failure signs at a later time. Welders have 2 options to control contamination – use a flux core wire or use gas.

Using gas requires welders first source a welding supply or gas supply house for proper mix of gas provided, which is commonly a mix of CO2 and Argon for Mig welding carbon steel (also, mild steel).

Flux core welding wire includes a shielding substance for weld protection. Better portability is the advantage here, because there is no heavy gas rank to drag around with the welder. The disadvantage is the mess, since flux core welding often leave more spatter.  

Mig welding on mild steel and on aluminum

Mig welding can be applied for most types of metals – steel, stainless steel, and aluminum. Still, welding aluminum is far from similar to welding mild steel, as aluminum is different from steel. Then when welding aluminum, welders have to use other settings and other parameters. For instance, as aluminum has lower melting temperature than mild steel, welders should use a higher local heat input but faster welding speed than with steel for good fusion and penetration. The welding sets would automatically adjust welding parameters, then the welder can focus on the welding operation, movement of welding gun and weld pool.

The machined-controlled parameters are, for instance, wire feed speed, arc voltage, gas consumption, wire diameter. Still, even if they are machine controlled, welders have to feed them into machine before starting to weld. During the welding process, the welding set can adjust relationship between those parameters. If they are set correctly, welders just have to focus on length of stick-out, angle of welding gun and welding speed. Then in many ways, Mig welding process is easier than metal arc welding.

Mig welding can be used with numerous metals, but there are some differences that welders should beware. Mig welding on mild steel and aluminum is a good example. The biggest differences between those 2 welding methods are choosing shielding gas and levels of ampere and voltages. Also, of course, the method used for metal transfer. Types of transfer can be listed as spray arc transfer, pulsed transfer, and dip transfer (also, short arc).

The spray arc transfer has higher arc voltage and amperage that short arc transfer. It is typically used on materials of different properties and thicknesses.

Shielding gas is chosen depending on metals to be welded. When welding aluminum, welders often use a mixture of argon and helium, or argon. Meanwhile, welding steel needs CO2. 

One problem with welding aluminum is to be able to see whether the weld you are doing will be right. Often, this problem can be handled by watching the welding pool. You can see from the material penetration, and from the weld flow, whether the welded joint is Ok or not. You can see whether the amperage and voltage levels are set right, or if the amperage is too low. That is something you can learn from experience.

One of most significant factors when welding is the current level. Without the current right, welders can make mistakes when Mig welding aluminum than when welding with coated electrodes. It is also important to clean the prepared joints. They can be cleaned with stainless steel wire brush, cleaning fluid. The fluid is, indeed, alcohol. It smells terrible. Still, welders can use welding masks with fresh air supply and use them when cleaning and welding. 

For those who may concern about:

How to Mig Weld Aluminium Using Spool Gun

Safety first

Mig welding has very specific safety issues as compared with other processes. Following is basic safety equipment needed:

• Welding helmet with the shade 10 or 11 lens reliant on the voltage welded with for eye protection from UV radiation.

• Safety glasses to protect welder’s eyes from sparks as well as flying spatter from cleaning the weld.

• Leather gloves to insulate the welder from electric shock and burns from sparks and heat. In some cases, welding gloves come with a reflective coating to tackle the head of welding heavy plate.

• Long pants and sleeves made of cotton, leather or fire retardant material to protect the welder’s skin from UV rays as well as hot metals. Good sun block also helps the skin areas without clothing.

• Leather booths to protect the welder’s feet from sparks and molten metals that will fall.

• Good ventilation to get rid of shielding gasses but not take them away from the weld area.

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9 Helpful Mig Welding Tips for Brand-New Welders from Pros

Useful Mig welding tips and hints that new welders should take note of...

Pocket tips and hints help out a lot along the process welders do their welds. Both managers and welders expect a quality welds approved by inspectors and without any customer complaints. That’s why helpful tips collection is often highly appreciated. It will be more appreciated if they are from the experienced, skilled and successful persons. Below are some useful Mig welding tips from pros that newbies can get to enrich their welding knowledge and hone their skills.

Try to become a successful welder by persistently learning skills, pocketing tips and working hard.

Mig welding (also, Metal Inert Gas Welding) is considered a welding technique that the filler metal is a supplier of power current and maintains arc. Thanks to inner gas – commonly, Argon, the arc would be shielded from air access. This process would combine two pieces of metal using a consumable wire with an electrode current connected.

1. Keep 1/4” – 3/8 in stick-out all the times. The stick-out acts as the electrode extending from the tip off your contact tube.

2. For thin metal, always apply a smaller diameter. You can employ a larger machine and a larger wire for thicker metals.

3. Always employ an appropriate shielding gas. CO2 commonly makes a good penetration into steel welds. Still, for thin metals, it can be too hot.

4. Only have Argon in use when you work with aluminium.

5. There are 2 typical types of wire when welding on steel. When working with dirty or rusty steel, use the ER70S wire.

6. Most control the weld bead. Always direct the wire toward the weld pool’s leading edge.

7. Always try to point the gun possibly straightest whilst you are welding.

8. If possible, you should weld using both hands, which will enable you to work with the guns kept steady.

9. Always keep your wire dry and clean to avoid any contaminants that can worsen your welds.

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24 Important Facts about Mig Welding

Important facts about Mig welding for your refreshing knowledge of this universal welding process.

Welding is a hard work. That’s why there needs some relaxing time to refresh yourself after all sweat, even burns you have sacrificed. Below are some facts about Mig welding that will help polish your knowledge and give you some ‘wise’ relaxation. This below list can also used as the note-taking sheet for brand-new welders to remember the key points of Mig welding and all welders to recall basics of this process. Hope you heart it!

• Mig welding is another name of Metal Inert Gas Welding.

• Developed in the 1940s.

• Considered a semi automatic welding process

• First called Gas Metal Arc (also, GMA, Gas Metal Arc Welding). There are some different Mig welding names as a result of types of gas used (Inert gas vs. non-inert gas).

• Mig welders have a handle with a trigger. The trigger controls the wire feed.

• Most used in fabrication shops that come with high production and unlikeness of wind blowing away the gas shielding.

• Employs a consumable wire electrode during the welding process fed from different spool sizes.

• Unlike just about all other welding processes, Mig welding includes one standard polarity type and voltage type. The voltage is direct current (DC). The polarity is DC electrode positive.

• The power source for Mig welding is ‘constant voltage power supply’ while Tig and Arc welding uses ‘constant amperage power supply’.

• Mig wire/ electrode types are associated with types of metal to be welded, type of transfer, abrasive resistance, position to be welded.

• Common Mig welding electrodes are the solid wire of thickness ranged from .023, .030, .035, to .045.

• Requires use of a shielding gas.

For those who may be interested in:

What is Your Definition of Mig Welding?

8 Useful Tips for Mig Welding

• 3 common types of gas for shielding in Mig welding are: Argon, Carbon Dioxide, Helium.

• The shielding gas used needs be a match with the electrode, and base metal.

• 4 transfer types used in Mig welding are short circuit, globular, spray, and pulsed spray.

• Transfer types are associated with metal type, shielding gas, and machine settings.

• Just about every metal can be Mig welded.

• Weld area is critically clean.

• Brings out a uniform, clean weld bead.

• Brings out a weld bead free of slag.

• Maintained by shielding gas.

• Facilitates welding in all positions.

• Produces long welds without repeated starts or stops.

• Requires less clean-up.

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What is Your Definition of Mig Welding?

 Below specify definition of MIG welding along with its pros and cons. Read on and don’t hesitate to leave your viewpoints of this process.

You may also be interested in:

8 Useful Tips for Mig Welding

MIG welding (also, Gas Metal Arc Welding (GMAW)) involves a process that takes advantage of a persistently fed solid electrode, shielding gas from an external supply, and electric power for melting the electrode and depositing this molten material in the welding joint. The equipment employed automatically regulates the electric characteristics of the arc. The welder is required of the only manual control (travel speed, travel direction and gun positioning). As far as appreciate equipment settings come, the power supply will give the needed amperage for melting the electrode at the required rate to maintain the pre-selected arc length (voltage). For instance, a higher stick-out resulted from drawing the torch back from the work piece leads to a decrease in current from the power source. That way maintains the similar electrode heating and returns the arc length to its pre-set condition. The selection of filler metal should be closely associated with the base material to be welded. Regarding MIG welding, the filler metal helps reinforce the completed welding joint aside from conducting current to the arc zone (and melting base metal and electrode as a result).

MIG welding can be employed on various metals, and base metals of numerous different thicknesses. Its successful application is related to the appropriate selection of:

• Electrode (composition, diameter, packaging)
• Shielding gas (type, purity, flow rate)
• Process variables (current, voltage, mode of metal transfer and travel speed)
• Equipment (power supply source, welding gun, wire feeder)

Why Use MIG Welding?

• MIG welding is a high-productivity, low-cost welding process
• It can be used for welding all types of metals and alloys commercially available
• Welding can work in all positions with right selection of equipment and parameters
• Using a persistently fed electrode maintains a high duty cycle and minimizes the defect occurrences
• In-depth weld penetration can be gained, which enables the employment of small weld sizes for equal weld strengths in some applications
• There requires minimal after-weld clean-up as a result of the absence of a slag cover on the weld bead
• Welding speeds and rates of weld metal deposition are higher than those got with stick welding
• Perfect for multi-pass welding (with appropriate filler metal selection)
• Less manual skill is required comparatively to stick welding
• Fume rates come at really low levels as compared to stick welding and flux cored welding
• Compositions and diameters of filler metal are widely selected for welding thick or thin material
• This process is perfect for mechanized welding.
• This process provides enhanced electrode deposition efficiency in comparison with stick welding and FCAW
• Welds of X-ray quality can be produced.

What are Downsides to MIG Welding?

• Weld equipment is considered more complex, more costly and less portable compared to stick welding
• It is difficult for the required welding torch to reach into the constricted areas. Plus, the good gas shielding is needed, which makes the torch be quite closer to the weld area.
• The welding arc with its gas shield is necessarily protected from drafts, which may cause the shielding to be blown away from the arc. This doesn’t facilitate the use of this process outdoors unless the protective shields are placed around the working area
• Pretty high levels of radiated heat and light might cause operator’s discomfort, initial resistance to the process
• Burn-through commonly occurs when welding especially thin materials (smaller than 1/16”)
• Pertaining to traditional transfer when welding out of position, rates of weld metal deposition are less than those obtained with flux cored welding
• This process fails to perform well in which base metal contamination is an issue. The base metal is required to be clean and rust-free
• Lacking in fusion defects may induce where process parameters are wrongly set. This is extremely critical when welding base metals are thicker than 1/4”

Are you finishing this read? What is your definition of MIG welding? Your opinions of its pros and cons? 

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Top 13 Things to Teach Your Novice Welders (Part 2)

Learning to weld is not easy. Just like a solider, one needs steadfast spirit, patience to learn. It also takes practice and firm foundation of knowledge. Following are 13 important things that companies can consider to teach their novice welders. Ensure they grasp those things for skilling up, gaining confidence needed to increase proficiency, and staying safe in the process.

See also:

Top 13 Things to Teach Your Novice Welders (Part 1)

7. Know material properties

Different materials have different chemical and mechanical properties. One of key components of training is to help new welders see the difference between materials, specifically how they respond to heating and cooling. For instance, austenitic stainless steel carries heat at about half the rate of mild steel though, it, when being welded, has much higher rate of thermal expansion. Not all, it comes with more localized heat affected zone(HAZ), which can induce buckling as the weld cools. Welders with awareness of those properties can take such precautions as clamping for distortion prevention. 

Likewise, many materials ask for pre and post weld heat treatments for the cooling rate control and cracking prevention. When welders familiarize themselves with such material attributes, they are better ready to make needed adjustments during welding process.

8. Inspect the welds with visualization

Visually inspect welds

The first step of quality control is to know how to make an accurate visual inspection of the completed weld. This is also the quickest and least costly method of inspection. Novice welders should learn how to define weld defects – for example, porosity, lack of penetration, excessive penetration, undercutting, weld cracks. Early identification of defects will help prevent time and cost poured into other testing methods, including non-destructive testing or x-ray inspections. 

9. Learn troubleshooting skills

One of key skills new welders should learn is the ability to define and rectify welding problems quickly. Downtime reduction, weld quality and productivity are associated with troubleshooting skills. Such skills also can help lower rework related costs. 

Novice welders can be benefited from learning to properly adjust the gas flow rate and/ or define gas leaks for solving instances of porosity. They should also know to adjust voltage and amperage settings if they face such issues as excessive conductivity, lacking penetration, undercutting. Defining welding problems related to worn consumables is also significant as poor conductivity can lead to an unstable arc and various weld defects.

10. Be familiar with maintenance

Each and every part of the welding system, from electric source to GTAW torch or GMAW gun and consumables, requires maintenance to keep its efficient and effective operation. New welders should familiarize with appropriate maintenance procedures, preferably the preventive ones, to be active in the continuing upkeep of the whole welding system.

11. Get the sense of proper travel speed

The most typical challenge facing welding instructors is training their students the right travel speed. It is difficult to know how slow or fast to move so as to generate the best possible weld. As the experienced, you may know how it feels for a proper travel speed though, it may be hard to tell someone how to do it.

Arc travel speed faults

Still, you can conquer this challenge by first letting your students watch you weld some practice beads. Newcomers can imitate you when you weld for getting the sense of how quick they need move. 

12. Know how to see the puddle

Teach your students about stick welding since it is easier to see the puddle. Yet, if you do start with Mig, you will need spend some time helping the new welders find out the right angle and positioning to see the puddle. When moving their heads to the side so as to see the puddle, beginners often move off the welding joint.

13. Know how to weld straight

Beginners needn’t learn how to weld uphill or in various positions. It may be the best just to start with a flat piece of metal that you draw 2 lines on and weld down the mid of it. Straight stringers are considered the best way to go with novice welders who need more focus on travel speed than the torch weaving or whipping when they work.

Teaching a new welder doesn’t just mean showing him/ her how to set the electric source or hold the torch or gun at the right angle. The best training approach is to integrate good habits which will keep welders safe and comfy, and equip them with the knowledge and tips to handle everything from materials to maintenance. Of course, the required time to shift a novice welder to the skilled will take long. Yet, the long term benefits are worth it.

Read More

Top 13 Things to Teach Your Novice Welders (Part 1)

Learning to weld is not easy. Just like a solider, one needs steadfast spirit, patience to learn. It also takes practice and firm foundation of knowledge. Following are 13 important things that companies can consider to teach their novice welders. Ensure they grasp those things for skilling up, gaining confidence needed to increase proficiency, and staying safe in the process.

See also:
Top 13 Things to Teach Your Novice Welders (Part 2)

 1. Put safety first

Teach welders to wear proper personal protective equipment

Importantly, welders keep themselves safe from electricity and heat generated from the welding process. As beautiful-like-firework as it is, the arc does harm to both eyes and skin. That’s why welders need wear appropriate personal protective equipment at all times. Those items include safety glasses, a welding helmet, flame-resistant gloves, a long sleeved welding jacket. Steel toed shoes and flame resistant clothing are also recommended. 

Aside from PPE, welders importantly employ enough local exhaust, ventilation at the arc, or use both to maintain the gases and fumes below Threshold Limit Value (TLV)/ Permissible Exposure Limit (PEL)/ Occupational Exposure Limits (OELs) in the general area and their breathing zone. 

Train novice welders to keep their heads out of fumes. 

Plus, explain to novice welders about how important it is for reading and comprehending the manufacturer’s equipment instructions, the workplace’s safety practices, safety instructions on the label, material safety data sheet for filler metals being employed. Overall, remind new welding workers of all needed precautions for their own and others protection.

From time to time, check for standing on a dry rubber mat (indoors) or a dry board (outdoors), and ground connections. That way also can mitigate the possibility of electric shock, further protecting welders.

 2. Properly install consumables

One important factor in attaining good weld quality is good conductivity (also, the ability for the electric current to run along the welding circuit). At all times, new welders should install their consumables like nozzles, diffusers, contact tips, etc. aligned with the manufacturer’s recommendation, ensuring each component is tightened securely. For instance, in the gas metal arc welding (GMAW) operation, with the secure connection between the GMAW gun neck and diffuser, shielding gas leaks would be prevented. Not all, such secure connections will give out the surface area necessary to carry the electric current through the GMAW gun and create a stable arc. They also help limit weld defects, help with consistent productivity and lower the risk of overheating related premature consumable failure.

3. Cleanliness is significant

Teach welders about proper cleaning procedure for particular base material being welded

It is definitely important to clean the base material before welding, and as necessary between weld passes. Oil, grease, dirt and other debris can enter the weld pool, inducing contamination. That will lead to bad weld quality and expensive rework. New welders need be taught as to the appropriate cleaning procedure for the specific base material being welded. 

In some cases, it is sufficient to wipe the base material using a dry, clean cloth. Still, more precautions need be taken when welding on aluminium, for instance. The welder will need use the stainless steel wire brush specified for aluminium to wipe out the joint prior to welding. That way will get rid of dirt and any oxide still residing on the aluminium's surface.

No matter what material, it is critical to properly instruct welders about cleaning before welding starts.

4. Always abide by welding procedures

Follow weld procedures

Like a recipe that makes a meal, welding procedures are needed to make consistent welds. Not just new welders but the experienced need grasp the importance of those procedures and always follow them.

The procedures for a certain application have been meticulously decided and qualified by the experts to guarantee that the recommended parameters can give out the desired results. 

Weld procedures cover such details as suggested gas flow rate, shielding gas mixture, voltage and current ranges. Those procedures also give information on type and diamter of filler metal to apply, and the appropriate wire feed speed in case of GMAW or flux cored arc welding (FCAW) application. 

5. Seize the importance of filler metal

Filler metals are consider a specially important but sometimes confusing component of welding system. It will be good for new welders if they familiarize themselves with attributes of different types of wires, inclusive of flux cored and metal cored wires, along with respective welding techniques. For example, those welding workers should learn whether their specific filler metal asks for a ‘push’ or ‘pull’ technique. Going by such old adages as “If there is slag, you drag” may help; it shows that flux cored wires that produce slag should be handled using the ‘pull’ technique. Also, new welders should form the habit of consulting the manufacturer’s spec sheet for more operating recommendations.

Also, learning to properly handle and store filler metals is important for new welders. They should put on clean gloves whenever handling the filler metals, and if they are in charge of storing them, they should do so in the clean and dry environment.

6. Keep comfortable

Staying cool and comfortable during welding process can help welders with lessened injuries and repetitive movement and reduced overall fatigue. If possible, they should learn to minimize their total strength moves or constant motion. Plus, the welders should employ a GTAW torch or GMAW gun with a comfy handle and cable style because those factors both make up the equipment’s manoeuvrability and weight.

Plus, new welders should be motivated to involve in raising efficiency of their welding workspace. Commonly, the more engaged a welder is in offering input about the work, the more satisfied he/ she will be. Also, such engagement can help guarantee better safety compliance and reduced welders’ compensation cost for injuries.

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19 Important Skills for Welding Occupation (Part 2)

With those skills, welders can be confident with their job achievement and employability!

Welding is a hard work; it requires the following skills to perfect the end products, accomplishing the job and earning handsome pays as a result. The employers will figure they are having a talent among their hires when they find out those skills that welder obtains:

11. Knowledge of Welding Tools and Equipment: An experienced welder with various welding tools and equipment will know how to use the tool most effectively for quickly having the job done in a safe fashion.

12. Manual Dexterity:  A great welder is always proud of their amazing manual dexterity and good hand-eye coordination for performing complicated physical tasks required of a welding career.

13. Comprehensive Knowledge of Different Welding Techniques:  A great welder would work to show you what a comprehensive knowledge of various techniques they have accumulated – for example, metal art, flux core arc, oxy fuel, and gas tungsten arc welding.

14. Writing: As an all-around welder, he should be good at writing reports or invoices from employers about his tasks completed, materials used, hours worked and how much to cost customers; writing safety guidelines to describe how to operate company equipment properly; to name some.

15. Reading: Good reading skills allow welders to grasp company policies, procedures like time-off request, understand codes and specifications for well leading up to welding projects. They also can read equipment and safety manuals that demonstrate safe operation procedures; read and follow specific welding procedures that governing bodies develop.

16. Document use: An ability of document use facilitates examining lines and colors of pipes at workplace to decide their contents – for instance, the type of gas they contain. Welders also use checklists to learn, follow appropriate work procedures, safety guidelines. Document use will help them with comparing color coding on metals to the color code chart for identifying its grade and alloy. Not all, they would review notes on the blueprints from the engineering department about materials, procedures; understand diagrams, tables on the blueprints for determining engineering requirements.

17. Computer use: The computer use skill helps out operating plasma cutting machines, orbital welders and other computer controlled equipment.

18.  Eye for the arc: This is the skill of bead placement, torch/electrode angles, and the ‘tricks of the trade’ that is needed to make an x-ray quality weld in any arc welding process.

19. Positive attitude and work ethic: As reported by many employers, ‘can-do’ attitude is becoming rare in the workforce those days. Some workers fail to learn the work ethic towards becoming a skilled welder. That way may result in a negative attitude about welding. Necessarily, positive working ethic and attitude are addressed early in the training centers because it is simply as important as the welding skills.

To add it up, welding is not as simple as thought. To earn a buck, the welders should ensure they grasp those skills, both technical and behavioral. Not few welders have complained about their pays. They have heard of this job’s very attractive wages, but it turns out to otherwise when they are working as a welder. This may be reasoned that they are not addressing some key skills among above listed, or pursuit an easy-to-do weld type occupation. After all, with the zeal for welding, hard work, commitment, and persistent improvement, they sure enjoy happy ending with this occupation. 

Also have a look at other important skills for welding occupation:

19 Important Skills for Welding Occupation (Part 1)

Read More

19 Important Skills for Welding Occupation (Part 1)

With those skills, welders can be confident with their job achievement and employability!

Welding is a hard work; it requires the following skills to perfect the end products, accomplishing the job and earning handsome pays as a result. The employers will figure they are having a talent among their hires when they find out those skills that welder obtains:

1. Ability to Read Blueprints: What makes a great welder is the ability to quickly and easily read blueprints and grasp how the information presented is associated with a project.

2. Awareness of Safety Standards:  A great welder has a good grip of safety standards in the industry for protecting themselves and others.

3. Concentration: A successful welder definitely is immersed into their job. Rather, they pay full attention to a project in a long period of time. They are able to be wholeheartedly dedicated to their work, and make sure all aspects are correctly completed.

4. Problem-solving: Just like other workers in the skilled trades, welders are required to be great problem solvers who care for details. They have to discover flaws with designs and materials, deal with broken areas, and know how to repair worn part or/ and equipment.

5. Math and science: Similarly to plumbers and other tradespersons, welders persistently apply their knowledge of basic science and math while working. They would estimate costs, make calculations, decide which metals to use with what chemicals and/ or fuels, track their own hours, etc.

6. Interpersonal: Welders usually spend lots of time on their own though, they often have to interact with employers, clients, other tradespeople. In construction, the welders, from time to time, work with other welders and tradespersons to guarantee projects are finished seamlessly.

7. Customer Service Skills: They can cater to clients’ needs and work effectively with other staff.

8. Detail Orientation:  A great welding worker will be very detail oriented. They are meticulous and thorough in the work.

9. Good Eyesight: While a historian need a photographic memory, an actor will shine out with exceptional acting skills and good looking face, a great welder with sharp vision will be able to see very complicated details in the work area.

10. Metallurgical Knowledge:  A great welder is simply familiar with different type of metals, their properties and how to work with them.

Find more of important welding skills here:

19 Important Skills for Welding Occupation (Part 2)

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How to evaluate a basic welder in SMAW( 1G, 2G, 3G, 4G)

1. Aware of various welding equipments & accessories used in SMAW

2. Have basic awareness with regard to the welding symbols & electrodes

3. Aware of different metal joining methods used in industry

4. Aware of different basic ferrous & nonferrous materials

5. Aware of consumables storage & handling

6. Through knowledge about various position in welding

7. Shall be able to avoid distortion by following sequences, fixing clamps & using proper sixe of electrode

8. Aware of volt & amps requirements for various size & type of electrodes

9. Aware of Pre-heating, Post heating & PWHT requirements

10. Aware of simple NDT techniques like DPT, MPT

11. Aware of various welding defects & its remedy: know how to distinguish weld, is it reference junction or not?

With modern facilities & advanced equipment about welding, Vietnam Manpower JSC always providing skilled welders to customers with high quality. Therefore, if anyone needs workers, please leave your email & mobile number, we will contact you in the shortest time.

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