How to Avoid Sensitization When Welding Austenitic Stainless Steels

Stainless steels are iron based alloys that contain a minimum of 10.5% chromium.  This chromium reacts with the air and forms a very thin but very tenacious chromium oxide layer which is what prevents stainless from rusting. There are 5 types of stainless steels which are categorized depending on additional alloying elements.  One thing they […]

Modes of Metal Transfer: Pulse

Pulsed spray refers to a GMAW mode of transfer in which metal droplets are transferred through the arc with changes in amperage produced by the power source.  The power source provides a pulsing peak current that raises the amperage above the transition current and allows for axial spray transfer.  This peak current is only applied […]

Modes of Metal Transfer: Spray

Spray is a mode of metal transfer in which a fine spray of metal droplets are projected axially from the tip of the electrode to the work.  These droplets are smaller in diameter than the electrode.  This mode of transfer is characterized by high wire feed speeds (high amperage), high voltage and consequently high heat […]

Modes of Metal Transfer: Globular

In our last post we explained short circuit transfer; if you missed it you can go back and read Modes of Metal Transfer: Short Circuit.  In this post we’ll spend some time going over globular transfer by covering its basics as well as its advantages and limitations. Globular transfer occurs in GMAW and MCAW processes […]

How to Control Welding Fumes

Engineering and work practice controls

We all know welding fumes are bad for your health.  Companies that do a lot of welding are paying special attention to this matter and trying to create better working environments not just for welders but for everyone in the shop.  Has your company taken any steps to reduce or control fume generation?  In this […]

3 Ways to Improve Out of Position Welding

Welding out of position does not need to be overly complicated.  It does present a challenge, especially for inexperienced welders, but there are things we can do to make this go well for everyone.  When we talk about out of position welding we mean welding vertical up or overhead. Although vertical down is technically out […]

7 Reasons to Consider Stick Welding Over Other Processes

Shielded metal arc welding (SMAW), or what we commonly call stick welding, is one of the oldest welding processes.  Despite being one of the first processes developed, it remains one of the most, if not the most used welding process worldwide.  If you have been working in a fabrication shop for years and using advanced […]

Who Is Required To Know Welding Symbols?

This is not limited only to welders and inspectors

Knowledge of welding symbols is not a requirement limited to welders. Many other professionals must have the ability to interpret and write welding symbols.  From estimators to designers to quality personnel, this universal language must be understood. In our last post we touched briefly on the importance of being able to interpret welding symbols.  If […]