Arc Welding Articles

The arc welding technology area focuses on the most commonly used arc welding processes, mainly GMAW/MIG, GTAW/TIG, SMAW/stick, and plasma. The articles and press releases cover processes and power sources, plus all of the related items—electrodes and wire, wire feeders, fixtures, manipulators, positioners, and power sources. If you need information on personal protective gear, ventilation systems, and safety practices for welders, see our Safety coverage area.

Filter Content

Consumables Corner: Before choosing filler, know your 4140

June 24, 2014

By:

Q: We need to weld 4140 steel to AR 360 plate and are thinking of using an E120 electrode to try and match the strength. Is this the right electrode for our welding application? A: Before you choose a filler metal, there are a few things you should consider for this application. First, 4140...

Continue Reading

Consumables Corner: Pinning down the cause of porosity in SAW

June 23, 2014

By:

Q: Our company produces large structures fabricated from mild steel plate with a small amount of HSLA forgings ranging from 0.5 in. to 4 in. thick. Our main process is submerged arc welding (SAW) using a mild steel electrode and a neutral-bonded flux. We have been experiencing some issues with...

Continue Reading

Consumables Corner: Reducing weld cleanup in pulsed GMAW

June 20, 2014

By: , ,

Q: Our company manufactures the main structures used to build fitness equipment. These structures are mild steel tubing of various shapes and sizes and in relatively thin material, typically 10 to 16 gauge. We are using 90 percent argon/10 percent CO2 shielding gas with a 0.035-in.-dia. ER70S-3...

Continue Reading

FAB 40: Merrill Fabricators’ welding school fuels local talent base

June 19, 2014

By:

Merrill Fabricators takes an innovative approach to the skilled labor crisis, by launching and growing its own welding school not only to fill its own ranks, but also to help grow the broader manufacturing community.

Continue Reading

Consumables Corner: Eliminating porosity in submerged-arc welding

June 19, 2014

By: , ,

Q: Our shop manufactures bridge and structural steel components. Most of the material is A36 or A572 and welded with E70X-X class electrodes using FCAW with 75 percent Ar/25 percent CO2 shielding gas (bottle-supplied) and SAW. We're having issues with porosity in our SAW process. We find that once...

Continue Reading

Consumables Corner: Longitudinal cracking: A check list for prevention

June 18, 2014

By:

Q: We are welding several fabricated parts made from A514 (T1) steel using an AWS A5.29, 3/32-in-dia. E110 FCAW electrode. On one particular part we are experiencing longitudinal weld cracking. The structure is a 4-in. plate with a square cut out of the center and a 1.5-in. plate welded back in its...

Continue Reading

Consumables Corner: Addressing cracking on free-machining steels

June 17, 2014

By:

Q: We are a small company that fabricates and welds various parts and products for numerous companies. One of our customers is supplying us with parts for a particular weldment. All of the individual parts are made from A36 steel except for one, which is made from 12L14 steel. We are using GMAW...

Continue Reading

Consumables Corner: Identifying pockmarking causes in structural SAW

June 16, 2014

By:

Q: Our company manufactures various structural components, typically made from A36 or A572 steel grades in plate, I-beam, or channel. Based on the application we’ll use GMAW, FCAW, or SAW. On random occasions we experience pockmarking on the surface of the SAW joints. While the timing is usually...

Continue Reading

No secret code for successful code welding

June 16, 2014

By:

Being a code welding shop with an ever-expanding customer base continuously challenges Andy J. Eagan Co. Inc., Grand Rapids, Mich. New customer projects and keeping on top of certification demands require a talented and dedicated workforce. As a result, that’s where the company puts a lot of its focus.

Continue Reading

Consumables Corner: The thought process behind changing a weld process

June 13, 2014

By:

Q: Our company is using 0.045-in.-dia. mild steel solid wire for GMAW with 90 percent argon/10 percent CO2 shielding gas. A majority of our base metal is ¼ to 1 in. thick welded out of position about 30 percent of the time. We are considering a change in our welding process to reduce lead-times....

Continue Reading

Consumables Corner: Tackling root penetration problems

June 12, 2014

By:

Q: We are experiencing weld root penetration issues in our single- and multipass welds. Our base metal is A36, and we oxyfuel-cut it in thicknesses from ½ to 3 in. Most of the weld joints are standard T-joints with a few groove joints. We are using a 0.045-in.- dia. E71T-1C/M flux-cored wire with...

Continue Reading

Consumables Corner: Examining the root cause of distortion

June 11, 2014

By: , ,

Q: We manufacture hydraulic cylinders. Ever since we changed our shielding gas blend, we’ve noticed a higher level of distortion. Before the change we used a 95/5 blend, but now we use 92/8, which we have documented using a 0.045-in.-dia. filler metal. Would the 92/8 blend run hotter and cause...

Continue Reading

Arc Welding 101: When to use updated AWS D1.1

June 2, 2014

By:

Q: I currently use the AWS D1.1-2006 edition and was wondering if I should get the 2010 edition. Dan C. A: Take a look at Section 4.2.1 of your D1.1-06 edition, referred to as “Clause” in later editions. It states, “The use of earlier editions shall be prohibited for new...

Continue Reading

Inverter helps manufacturer achieve improved arc starts, arc control

June 2, 2014

By:

The welders at JATCO Environmental Inc., a manufacturer of steam-to-liquids condensers for natural gas extraction, had a problem with striking and maintaining a good arc. When the company switched from a rectifier-based unit to an inverter-based unit, the welders found that the arc starts and weld characteristics were greatly improved.

Continue Reading

Arc Welding 101: Oscillation during welding - Why?

May 30, 2014

By:

Q: What are the reasons to oscillate a weld process? Vince H. A: Oscillation helps a steelworker using electroslag to fabricate components for San Francisco’s Bank of America building; it helped to minimize the arm fatigue of a pipefitter as he built Louisiana’s River Bend nuclear power...

Continue Reading