I’ve been around with Oil & Gas fabricator long enough to see and know how many rate they get to be a welder.

There’s been a lot of Welder Qualification Testing or WQT been done throughout every project that I’ve been involve. And there been a lot of certified been release with level that accepted to the quality of Oil & Gas industries.

The known process involve in Oil & Gas industry will be SMAW, Metal Arc Welding (or normally known as stick welding), GMAW (or MIG welding), GTAW (or TIG welding) and underwater welding.

Below will be the list of welding position that been approved in Oil & Gas industries.

Sheet groove weld position will be:
a) 1G; flat,
b) 2G; horizontal,
c) 3G; vertical
d) 4G; overhead position:

Sheet fillet weld position will be:
a) 1F; flat,
b) 2F; horizontal,
c) 3F; vertical
d) 4F; overhead

Tube groove weld position will be:
a) 1G; horizontal rolled,
b) 2G; vertical,
c) 5G; horizontal fixed
d) 6G; inclined position.

Tube fillet weld position will be:
a) 1F; flat,
b) 2F; horizontal,
c) 4F; overhead,
d) 5F; multiple position

I’m guessing the “G” suffix means “groove”, and the “F” suffix means “fillet”, but we really need confirmation all of this.

The higher paid welder will be 6G and 6GR position and underwater welder.

Enough with introductions, now come the real stories of this blog.

I’ve been thinking a long, long time ago. And tested many time on the method of to weld/braze/solder the aluminum alloy. The problem is not all kind of aluminum alloy can be weld/braze/solder because aluminum alloy tended to oxide right after reaching melting point of 660°C.

My previous idea mostly like to create and built heat sink for my mini HVAC, heat pipe creation for lower pressure water vapor devices, outer layer of my antigravity devices and replacement of copper tube in my water/hydrogen reactor converter. Either using copper material and/or aluminum material, the biggest problem will be to glue aluminum together with strong, chemical & heat resistant with a good of heat conductivity.

After searching the web, I just found out there’s a special flux and special welding rod were use to weld aluminum. Furthermore we must use Inert gas welding machine to complete the job. And it will become burden for me to complete my project if somebody like me using low budget to get expensive tool just to trial and error.

Then, in the middle of Mar2010, after some search in the internet, I just notice that it was a phenomenal problem to weld/braze/solder aluminum. Until I found “as seen on TV” Special Aluminum Brazing Rods. With different commercial name like HTS2000, Dura fix, Aladdin 3 in 1, Alumaloy, Alumaweld, Alumarod etc, the Aluminum Brazing Rods was live up to the claims.

These rods started to melt around 380°C, not using any flux and never oxide. As far as I know the composition of another 2 kind of metal beside Aluminum itself still a trade secret between manufacture. For HTS2000, there were another 8 kind of metal were reported beside the Aluminum itself.

After ordering this Aluminum Brazing Rods, I can continue to braze my aluminum based fabrication project without any hassle because the low melting point and never oxide under braze temperature just by using my mini butane gas torch.

As the product become more variety of cast iron low temperature brazing, stainless steel low temperature brazing and copper low temperature brazing , I’ve keep on thinking, what happen to our welding industries and skillful welder next time when we do WQT? Hahahaha….

Wallahualam..

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