How to Weld High Carbon Steels

High carbon steels are those containing 0.45% carbon or higher. They are typically considered “hard to weld” because they are crack sensitive and are susceptible to undergoing significant changes in their physical and mechanical properties after welding.  However, high carbon steels can be welded successfully and without problems by having a sound understanding of the […]

The Outrageous Cost of Poor Fit Up in Welding Operations

You will cringe when you read this

In a perfect world parts would fit together perfectly every time.  However, as we all know, this isn’t the case.  We mostly think of poor fit up as something that annoys welders but which they can compensate for.  But the reality is it can have tremendous impact on your bottom line.  Or, in many cases, […]

How to Weld Abrasion Resistant – AR – Plate

Abrasion resistant (AR) steel plate is used in applications requiring abrasion and impact resistance.  It is alloyed with high levels of carbon in order to attain high levels of hardness through the quenched and tempered process.  AR plate is primarily used in conveyors, buckets, dump liners, construction attachments, grates, body armor and ballistic plates. AR […]

The Importance of Contact Tip to Work Distance in GMAW

If you look at any of the structural welding codes you’ll notice that contact-tip-to-work-distance (CTTWD) is a variable which must be listed in welding procedure specifications (WPSs).  However, it is not an essential variable, meaning that changes to CTTWD of any amount do not require requalification.   This can seem puzzling to some, especially those […]

FCAW prequalified welding procedures and their limitations

Dangers even if you follow all the requirements of AWS D1.1

The use of prequalified welding procedures has many advantages as well as many disadvantages.  One danger of using prequalified welding procedures is that AWS D1.1 allows for quite a bit of freedom in weld sizes.  If you look at Table 5.1 –Prequalified WPS Requirements of AWS D1.1/D1.1M:2020 Structural Welding Code (Steel) you’ll see that in […]

6 Levels of Welding Quality Standards

Which one do you fall under?

  We received a large number of email responses and comments to our article from two weeks ago pertaining to weld quality standards. The main question was how to do you determine the minimum level of quality for your products, but also how do you verify you are reaching or exceeding that quality level. Responses […]

How to Determine Acceptable Weld Quality

Certain industries that involve welding of their products have very strict quality standards to ensure the production of sound welds.  Many others however, do not.  They simply weld and unless one of their products fails they don’t pay special attention to welding procedures, detailed inspection of welds or testing the skill (performance) of their welders. […]

How to Become a Certified Welding Inspector

A career as a Certified Welding Inspector (CWI) can be very rewarding.  This certification, which is awarded by the American Welding Society, carries a lot of weight both nationally and internationally.  The main responsibilities of a CWI is to make sure that welding operations are manufacturing products that comply with specified welding codes and standards. CWIs essentially are expected […]

The AWS D1.1 1G Welder Qualification Test

The AWS D1.1 Structural Welding Code (Steel) welder qualification plate tests consists of a groove weld with a 45-degree included angle. The plates are prepared to a knife’s edge and a ¼ in [6 mm] backing strip is used.  The test for unlimited thickness will use plates that are 1 in [25 mm] thick.  Anything […]

Danger of Using the Wrong Shielding Gas for GMAW

In our previous article we mentioned that a customer was inquiring about running their 98% argon / 2% carbon dioxide (98/2) shielding gas on mild steel.  This gas is used on stainless as it maintains the amount of reactive gas (in this case CO2) under 3%.   Our quick answer was “yes, you can weld carbon […]