Autogenous Welding: What, Types, Power Source, Exhaust, Machine and Examples


In this article, “Autogenous welding “, with some different several facts like Types, Power Source, Exhaust, and Machine with interpretation are prate thoroughly. Autogenous welding filler material not needed.

Autogenous welding is a versatile welding process. In different types of methods of welding autogenous welding is applied. Some methods like oxyacetylene or gas tungsten arc welding can use autogenous or filler metal. Without applying filler metal autogenous welding is done to joined two or more metals.

What is autogenous welding?

The joint strength for the autogenous welding is not good at all. The joint strength is lower compare to the base plate’s strength. The part of the welded became weaker.

Autogenous is a method that link up two or more than two metals without any collection of filler metal. The most used joints in the autogenous welding are edge joint. The other types of joints can be made with the autogenous welding are corner joint and lap joint. Only tee joint cannot make with the autogenous welding.

Classifications of Autogenous welding process:

Autogenous welding is one kind of process of welding which is sustaining fusion welding method more than welding method of the specific fusion.

The Classifications of Autogenous welding process name with detailed facts are discuss below,

autogenous welding
Image – Orbital TIG Welding – Autogenous Welding – Micro-fit High Purity Tubing;
Image Credit – Wikimedia Commons

Gas tungsten arc welding:-

In the Gas Tungsten Arc Welding method (GTAW) an electrode is used which should be non consumable to produce high temperature near about 3800 degree centigrade and temperature have more melting point than the base metal to create the weld for the desired shape.

In the materials where Gas Tungsten Arc Welding method is applied are non – ferrous metals such as magnesium, aluminium, stainless steel.

Follow some basic process to run the Gas Tungsten Arc Welding method smoothly:-

  1. Need to wear protective gear.
  2. The material use in the Gas Tungsten Arc Welding method should be clean.
  3. Keep the right angle of the torch.
  4. Minimum power should be use to run Gas Tungsten Arc Welding method.
  5. Filler rod should not be dissolve directly.
  6. Right Tungsten should be choosing.
  7. Working with the stainless steel.

Advantages:-

  1. Flux is not required.
  2. Clean welds can make with Gas Tungsten Arc Welding method.
  3. High quality weld can made with Gas Tungsten Arc Welding method.
  4. Allow all position of welding.
  5. Smoke is not produce.
  6. Sparks and slag also not produce.
  7. Work with verities of metals.
  8. Filler metal not essential.

Disadvantages:-

  1. Deposition rate is too low.
  2. High skilled welders are needed.
  3. Dissimilar metals cannot be work with the Gas Tungsten Arc Welding method.

Laser beam welding:-

The welding method of Laser Beam Welding an evaporated laser beam is used to dissolve the base metal and create the weld for the desired shape.

Advantages:-

  1. Weld quality with Laser Beam Welding can be making in very preciously.
  2. Electrode is not needed.
  3. Laser Beam Welding is an automated method. With the help of robotic machinery a large amount of production easily can be made.
  4. Laser Beam Welding is a non contact method for this reason tool wear is not appear.
  5. In the Laser Beam Welding methods vacuum is not necessary for this reason in the air Laser Beam Welding easily can be done.
  6. In a very small space Laser Beam Welding preciously can be done.

Disadvantages:-

  1. Initial cost of Laser Beam Welding is too high.
  2. Maintenance cost of Laser Beam Welding also too high.
  3. Cracks are produce in Laser Beam Welding method for repetition of cooling.
  4. High skilled welders are needed.
  5. Only can work with 19 mm thick metals.

Electron beam welding:-

The welding method of Electron Beam Welding a strong force beam is used to dissolve the base metal and create the weld for the desired shape.

Advantages:-

  1. Operating cost is not too high.
  2. Welding speed for the Electron Beam Welding is too high.
  3. Dissimilar metals easily can be weld with Electron Beam Welding.
  4. Penetration rate to the width is high.
  5. Base metals with the temperature of melting point can be work with the Electron Beam Welding method.
  6. Rate of distortion is low.
  7. Reactive material such as titanium and beryllium can be work with Electron Beam Welding method.
  8. Inaccessible joints easily can be creating with Electron Beam Welding process.
  9. Electron Beam welding process can work with 0.025 mm to 100 mm thick metals sheets.

Disadvantages:-

  1. Equipment cost of the Electron Beam Welding is high.
  2. High skilled welders are needed.
  3. High vacuum in Electron Beam Welding process needed to run.
  4. High safety is required.
  5. Large amount of job cannot be performing well with the Electron Beam Welding.

Plasma arc welding:-

The welding method of Plasma Arc Welding ionized plasma arc is used to dissolve the base metal and create the weld for the desired shape.

Advantages:-

  1. Welding speed for the Plasma Arc Welding is high.
  2. High amount of energy is easily can get with Plasma Arc Welding.
  3. Penetration rate to the width is high.
  4. In low amperage Plasma Arc Welding can be work.
  5. Stable arc is creating.
  6. Low power consumption.

Disadvantages:-

  1. Noisy operation.
  2. High skilled welders are needed.
  3. Maintenance cost of Plasma Arc Welding also too high.
  4. More radiation Equipment cost is high.

Autogenous orbital welding:

Autogenous orbital gas tungsten arc welding (GTAW) is a controlled, precise welding method which is developed to decreases the chance of operator error and improve weld quality when joining tubes or other static workpieces with a non-consumable electrode.

Autogenous laser welding:

Autogenous laser welding is a fusion welding process.

Two metal pieces are joined together by the use of laser. It is focused to the cavity between the two metal pieces to be joined. Enough amount of energy is present and also expert hand is needed to operate autogenous laser welding process.

Image – Autogenous laser welding;
Image Credit – Wikimedia Commons

Autogenous fusion welding:

Autogenous welding is a process of fusion welding. Autogenous welding does not need the filler metal application to form a weld. Since solid-state welding processes generally do not use filler materials, they may also be classified as autogenous.

Autogenous welding power source:

The power source of the autogenous welding are listed below,

Gas Metal Arc Welding:-

In the Gas Metal Arc Welding as a source electric arc is used that occurs fusion welding method.

Gas Tungsten Arc welding:-

Another name for the Gas Tungsten Arc welding is Tungsten Insert Gas Welding. The Gas Tungsten Arc welding is a type of arc welding where an electrode which is non consumable tungsten is used to make the weld.

In the materials where Gas Tungsten Arc Welding method is applied are non – ferrous metals such as magnesium, aluminium, stainless steel, alloys of copper.

Flux Cored Arc Welding:-

Another name for the Flux Cored Arc Welding is Dual Shield Welding. Flux Cored Arc Welding is semi automated arc welding process.

Shielded Metal Arc Welding:-

In the Shield Metal Arc Welding an electrode is used which is metallic consumable of an appropriate mixture for running arc by parent workpiece and itself. The dissolved metal of electrode full fills the gap of the weld and the workpiece joint with each other.

What kind of metal is exhaust in Autogenous welding?

The common classifications of steel used in exhaust process cover ferritic and austenitic stainless steel and also aluminium.

Autogenous welding examples:

Autogenous welding is most suitable for thin metal sheets.

The examples of autogeous welding and their details are prate below,

Gas tungsten arc welding:-

In the Gas Tungsten Arc Welding method (GTAW) an electrode is used which should be non consumable to produce high temperature near about 3800 degree centigrade and temperature have more melting point than the base metal to create the weld for the desired shape.

Application:-

  1. Gas Tungsten Arc Welding method can be work with aluminium and its alloys, alloys of stainless steel, alloys of magnesium, alloys of nickel base, alloys of copper base, alloys of low steels and carbon steel and many more.
  2. In hard facing Gas Tungsten Arc Welding is used.

Laser beam welding:-

The welding method of Laser Beam Welding an evaporated laser beam is used to dissolve the base metal and create the weld for the desired shape.

Application:-

  1. In industry of automotive Laser Beam Welding widely used.
  2. Making of jeweller Laser Beam Welding is used.
  3. To make high precision welds.
  4. Medical fields.

Electron beam welding:-

The welding method of Electron Beam Welding a strong force beam is used to dissolve the base metal and create the weld for the desired shape.

Application:-

  1. For making bridges, ship’s shell plates, electronic components, parts of the aircrafts Electron Beam Welding is used.
  2. Medical industries.
  3. Electron Beam Welding is use for joining titanium and alloys of the titanium.
  4. Aerospace industries.

Plasma arc welding:-

The welding method of Plasma Arc Welding ionized plasma arc is used to dissolve the base metal and create the weld for the desired shape.

Application:-

  1. Marine industries.
  2. Aerospace industries.
  3. Plasma Arc Welding is use for joining titanium and the alloys of the titanium and also stainless steel and the alloys of the stainless steel.
  4. Electronic industries.
  5. For repairing the tools, mould and die.
  6. Coating the blades of the turbines.

Examples of Non autogenous welding:

Some examples of Non autogenous welding are listed below,

  • Manual Metal Arc Welding
  • Flux Cored Arc Welding
  • Gas Metal Arc Welding

Indrani Banerjee

Hi..I am Indrani Banerjee. I completed my bachelor's degree in mechanical engineering. I am an enthusiastic person and I am a person who is positive about every aspect of life. I like to read Books and listen to music. Let's connect through LinkedIn-https://www.linkedin.com/in/indrani-banerjee-2487b4214

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