Posts Tagged ‘arc welding’

« Older Entries

Categorization of Welding Machines With Regards To the Power Supply

Tuesday, March 16th, 2010

As we all are informed about. Welding is nothing but a frictional process that is used to join metals and thermoplastics by means of melting and fusing them as one with the help of some power supply. A substance called as the filler, more often than not the metal or plastic of molten condition is made use of in the process of welding to grasp and fuse the work pieces as one.

Welding is a process that needs an energy source and it can be done with any kind of different energy sources. Energy sources like that of the gas flame, electric arc, laser, electron beam, friction and ultrasound are the sources that are most commonly used in Welding. In fact he source that are to be used for welding purposes mostly depends up on the material and the output. Welding machines are categorized into a constant current or that of the constant voltage. CV machine is used by gas metal arc welding and flux-cored arc welding processes. A CC machine is used to count on a preset number of amps reaching the material being welded.

  • Share/Bookmark

Tags: ,
Posted in Arc Welding | No Comments »

Guidelines for Submerged Arc Welding

Monday, February 15th, 2010

Submerged arc welding in short is known as (SAW). The other name for SAW welding is sub arc, welding. In this welding procedure it requires a continuously fed wire electrode and a blanket of fusible, material - commonly known as flux. The importance of using the flux is to the shield the arc and molten material. An arc is generated between the material and wire electrode, and tip being submerged in the flux.

The process of welding is similar like arc welding process. The position of welding is limited to horizontal welding position. Saw welding procedure gives high quality of submerged arc welds. Since they provide high quality of welds they seek deep penetrations and deposition rates also being higher. The process of welding is automated or semi -automated. Sub arc welding is popular among the rebuilding steel fabrication industries, and hard facing industries.

The Equipment which comes into the contact for submerged arc welding process are- source of electricity, wire drive unit or head, flux storage, nozzle (combining wire and flux in the joint) and control units. The power to be used is DC or AC power or both powers can be used on multiple electrode systems. The flux been used can be recycled and reused.

  • Share/Bookmark

Tags: , ,
Posted in Arc Welding | No Comments »

Overview Submerged Arc Welding

Tuesday, January 19th, 2010

Submerged arc welding is an arc welding process and often referred as SAW. This gives welders with many advantages, from reducing UV radiation and providing a higher quality weld.

Advantages

  • High Quality Weld
  • Minimum Operator Skills Required
  • Suitable for all welding environments
  • Well suited for welding carbon, low alloy and alloy steel.
  • Relatively High metal deposition rates

DisAdvantages

  • We can weld only in Flat or horizontal
  • Need to preserve correct electrode alignment.
  • Irregular wire feed.
  • Share/Bookmark

Tags: ,
Posted in Arc Welding | No Comments »

Flux Core Arc Welding

Monday, January 18th, 2010
  • This process is mixture between Mig and Stick welding.
  • This process is same as Mig Welding, except instead of a shielding gas using in Mig Welding, there is flux in welding wire.

Advantages

We can Use it in All Environments.

Disadvantages

Need additional clean up to remove flux

  • Share/Bookmark

Tags: ,
Posted in Mig Welding | No Comments »

Guidelines to develop your arc welding efficacy

Wednesday, December 23rd, 2009

Once you have decided to equip yourself with the utmost knowledge you can and improve you efficacy while arc welding then gather up confidence. They will stick to your skin with constant practice. Here is a simplified version that should be ringing in your head from time to time while you perform arc welding. The name stick welding is attached to the task as we make use of an electrode that resembles as stick. Try to remember CLAMS;

Current setting- Depending upon the diameter and the electrode utilized the right amperage should be fixed.
Length of arc- While you vary the length of the electrode the length of arc should also be altered.
Angle of travel- Flat and horizontal positions are suitable for this type of method.
Manipulation- Bring out your own style with the basic intact.
Speed of travel- With different speed a variety of welding finishes can be obtained.

  • Share/Bookmark

Tags: ,
Posted in Arc Welding | No Comments »

Precautions in Confined Spaces While Welding Or Cutting

Thursday, December 17th, 2009
  • While welding or cutting in confined space, the space should be cleaned, ventilated and tested during the welding operation.
  • The way of entering a confined space, should be quickly removing employee in case of an emergency.
  • When arc welding in a confined space is to be suspended for any substantial period of time all electrodes should be removed from the welders and the machine shut off.
  • When gas welding or cutting in a confined space is to be stopped for any substantial period of time the torch valves should be closed and the machine shut off. The welding torch and hose shall be removed from the confined space or disconnected from the gas supply during welding. Before re-entering in confined space atmospheric tests shall be made.
  • Check whether hoses and connections are free from leaks.
  • When gas welding or cutting in a confined space, such as pipe line, compartment, tank or container, check to be free from explosive vapors or any danger of explosion.
  • Share/Bookmark

Tags: ,
Posted in Welders | No Comments »

Tips to get better arc welding

Monday, December 7th, 2009

Shielded Metal Arc Welding is otherwise known as stick or arc welding. There are 5 most important aspects that will influence your arc welding effectiveness. They are
- Current setting
- Length of arc
- Angle of electrode
- Manipulation of the electrode
- Speed of travel
The above listed 5 will help you improve your welds particularly if you are a newbie. If you are still thinking about which machine to buy then these below listed tips will help you decide if you should buy this welder or not.
- For an all purpose welding utility you can go in for Miller’s Thunderbolt. A DC powered machine is more advantageous than an AC powered one as it starts easily, produces less spatter and smooth arcs are possible too.
- Some brands produce machines that are capable of an amperage and duty cycle inversely proportional to each other.
This method does not demand strenuous cleaning routine.

  • Share/Bookmark

Tags: ,
Posted in Arc Welding | No Comments »

Fundamentals of Arc Welding or SMAW

Monday, November 16th, 2009

Welding is of many types. SMAW or Shielded Metal Arc Welding is a complicated name for arc welding. In arc welding an electrode coated with flux is the one which aids in making welds. Electric arc is produced with the help of AC or DC power. Here the shielding gas is formed when flux starts to disintegrate and vaporize. It resists contamination. Below are the basics of using an arc welder.

  • Dc is used to produce smooth welds.
  • AC produces more spatters.
  • Direct Current Electrode Negative is named as Straight Polarity and Direct Current Electrode Positive is named as Reverse Polarity.
  • SMAW can lead to defects such as undercut, slag inclusion and porosity.
  • Exposed skin welding leads to cancer and brutal medial issues in the long run.
  • Spatters are drops of molten metal. They stick to the metal that you are welding. They usually chip off unless you are using your welder at a very high temperature.
  • Share/Bookmark

Tags: ,
Posted in Arc Welding, Welders | No Comments »

Benefits of Arc Stud Welding

Tuesday, November 3rd, 2009

Welding is the process of joining 2 metals into one. An arc stud welder is a metal fastener. A weld nut is fixed in a metal by heating it sufficiently. Duration for this welding process is almost less than one second. The process is done with the help of a stud gun. The following are the used of an arc stud welder;

  • There are many industries that are utilizing the applications of an arc stud welder. To name a few: shipping, appliance, boilers, aero-dynamics and automotive.
  • Almost any metal thickness will listen to this welder. The welder has the capacity to fasten metals from .06 inch to many inches.
  • With minimal surface disruption the welder has the capability to offer a full cross segment weld.
  • When all other fastening methods ditch you, arc stud welder can be a blessing.
  • It can be automated.
  • The process results in cost effective welds.
  • Easy to operate and therefore requires less human resource training.
  • Share/Bookmark

Tags: , ,
Posted in Arc Welding, Welders | No Comments »

Reasons To Opt for Arc Stud Welding

Friday, October 16th, 2009

There are a range of applications that arc stud welding can offer. They include heavy construction, ship building, appliance, automotive, boilers and aero-dynamics. Arc welders perform magic on almost all material width. Arc welders may be used on a variety of material depth starting about .060 in to numerous inches. The stud welding procedure is beneficial for the subsequent reasons:

  • Key design terms may be willingly tailored to the procedure, for instance material types, metallurgical aspects, unusual yarn designs, fit-up tolerances, etc
  • Competent of producing a full cross segment weldment through a bare minimum of base metal distortion or surface disruption
  • Capable of being utilized in locations that don’t allow application of other binding methods
  • Procedure lends itself to the computerized concept or soaring production shops
  • Arc welders produce welds which are less expensive per unit than
    other methods
  • Procedure may be successfully used with a bare minimum of time depleted in workers training
  • Procedure may be successfully utilized in maintaining weld value with a minimum examination time.
  • Share/Bookmark

Tags: , ,
Posted in Welders | No Comments »

« Older Entries