What is the most common method of welding?
Shielded Metal Arc Welding
What are the techniques of welding?
The following are the commonly used welding methods:
- Stick/Arc welding (SMAW)
- Metal Inert Gas (MIG) welding or GMAW.
- Tungsten Inert Gas (TIG) welding or GTAW.
- Flux-Cored Arc Welding.
What are the common welding techniques used to different welding processes?
Different types of welding and what they are used for
- MIG Welding. MIG welding is one of the easier types of welding for beginners to learn.
- Stick Welding. Stick welding, also known as Arc welding, is doing it the old fashioned way.
- TIG Welding.
- Plasma Arc Welding.
- Electron Beam and Laser Welding.
- Gas Welding.
Why are my stainless TIG welds dark?
Response from weldingtipsandtricks.com on stainless steel welds. Discoloration is oxidation. It is just a matter of the argon shielding envelope leaving the hot metal before it has a chance to cool enough to not oxidize. Stainless has a tendency to bond really well with low heat as long as it is clean.
Why is my Tungsten turning black?
If the tungsten electrode turns from its normal color of light gray to a shade of purple or black, that is an indication to increase post-flow time even more. In addition to causing various weld puddle troubles, contaminated tungsten electrode is also the leading cause of an unstable arc.
How do you keep tungsten sharp?
Sharpen tungsten longitudinally (From OD to tip). Make it sharp for increased arc control. Blunt the pointed tip ever so slightly to avoid breaking off (if scratch starting) And lastly… Keep it out of the puddle!
What is the best tungsten for stainless steel?
Ceriated (Color Code: Orange) Like thorium, it is best used to weld carbon steel, stainless steel, nickel alloys, and titanium, and in some cases it can replace 2 percent thoriated electrodes. Ceriated tungsten has slightly different electrical characteristics than thorium, but most welders can’t tell the difference.
What color tungsten is for stainless steel?
These are the only Tungsten Tig Electrodes we stock as they are the most versatile. Red = 2% Thoriated. Use for Tig Welding Mild Steel and Stainless Steel. White = Zirconiated.
What welding rod do I use for stainless steel?
A 309 or 312 SMAW electrode is a good choice for stick welding stainless steel, especially for maintenance or repair applications. It offers high cracking resistance and good strength, and typically can join stainless steel already in service, even if the specific material grade isn’t known.
What kind of tungsten is purple?
Rare Earth (Purple) Electrodes The innovative Rare Earth Blend tungsten electrode contains 98.34% tungsten, 1.5% lanthanum, 0.08% Zirconium, and 0.08% Yttrium. It is the perfect substitute for red thoriated electrodes.
What is purple tungsten used for?
This rare earth tungsten offers excellent ignition characteristics and consistent welding properties. They are universal and suitable for all applications in the whole range of AC and DC welding of non-alloyed and high-alloyed steel, aluminium, titanium, nickel, copper and magnesium alloys.
What is red tungsten used for?
2% Thoriated (Red) Electrodes Thoriated electrodes perform well in DC applications and are great for welding copper alloys, nickel alloys, titanium alloys, and stainless steel.
What is blue tungsten used for?
Blue electrodes are effective for welding aluminum alloys, magnesium alloys, nickel alloys, copper alloys, titanium alloys, low-alloyed steels, and non-corroding steels. The red thoriated type is America’s favorite electrode for a reason.
What do the colors on tungsten mean?
Color code and what it means The main colors/varieties of TIG electrodes and their American Welding Society abbreviation are as follows: Green (EWP) = Pure Tungsten, Orange (EWCe-2) = 2% Ceriated, Red (EWTh-2) = 2% Thoriated, Gold (EWLa-1.5) = 1.5% Lanthanated, Brown (EWZr-1) = 1% Zirconiated.
Why does my Tungsten melt?
TIG electrodes melt due to a variety of reasons, the most common are: diameter of the electrode too small for set current, the polarity of the torch is clamped electrode positive, welding with DC instead of AC or the electrode material is not suitable for the welding setup.
What does TIG stand for?
Tungsten Inert Gas
What does TIG mean in texting?
Tonight Is Goodbye