The LEL (Lower explosive limit) for hydrogen is 4% in atmosphere (20.9%oxygen at sea level). 5% in argon is a non-issue, as it's dispersal around the puddle much further dilutes it. It's not uncommon to have a slight "flare" around the cup when using up to 5% hydrogen, as it will still burn off once it meets oxygen while hot, but this is not a hazard. It's not unlike your butane lighter diffusing from pure butane to a mix that will burn in air a noticeable distance from the nozzle it comes from, and you're already looking at an arc of significantly high temperature.
Steve S
Tig welding tips, questions, equipment, applications, instructions, techniques, tig welding machines, troubleshooting tig welding process
- Otto Nobedder
-
Weldmonger
-
Posts:
-
Joined:Thu Jan 06, 2011 11:40 pm
-
Location:Near New Orleans
exnailpounder
- exnailpounder
-
Weldmonger
-
Posts:
-
Joined:Thu Dec 25, 2014 9:25 am
-
Location:near Chicago
Was beer involvedDrDogwood wrote:Oxy/Acetylene can be fun lol We Started with plastic oil cans quart then gallon then 2.5 gal then a 5 gallon pail and a 30 gallon drum. After we set off the 55 gallon drum we decided we had better quit before some one got hurt. It removed all the grass in a 20 foot circle and took several minutes for the lid to come back to the earth. Oh please don't anyone try that.
Ifyoucantellmewhatthissaysiwillbuyyouabeer.
Farmwelding
- Farmwelding
-
Weldmonger
-
Posts:
-
Joined:Thu Mar 10, 2016 11:37 pm
-
Location:Wisconsin
What good story does not include beer. As the old saying goes, no good story started ¨I was eating this salad...¨exnailpounder wrote:Was beer involvedDrDogwood wrote:Oxy/Acetylene can be fun lol We Started with plastic oil cans quart then gallon then 2.5 gal then a 5 gallon pail and a 30 gallon drum. After we set off the 55 gallon drum we decided we had better quit before some one got hurt. It removed all the grass in a 20 foot circle and took several minutes for the lid to come back to the earth. Oh please don't anyone try that.
A student now but really want to weld everyday. Want to learn everything about everything. Want to become a knower of all and master of none.
Instagram: @farmwelding
Nick
Instagram: @farmwelding
Nick
exnailpounder
- exnailpounder
-
Weldmonger
-
Posts:
-
Joined:Thu Dec 25, 2014 9:25 am
-
Location:near Chicago
I hear that! Usually the trouble starts when you hear, "hold my beer"Farmwelding wrote:What good story does not include beer. As the old saying goes, no good story started ¨I was eating this salad...¨exnailpounder wrote:Was beer involvedDrDogwood wrote:Oxy/Acetylene can be fun lol We Started with plastic oil cans quart then gallon then 2.5 gal then a 5 gallon pail and a 30 gallon drum. After we set off the 55 gallon drum we decided we had better quit before some one got hurt. It removed all the grass in a 20 foot circle and took several minutes for the lid to come back to the earth. Oh please don't anyone try that.
Ifyoucantellmewhatthissaysiwillbuyyouabeer.
Ironically there looking at bringing back propane as a refrigerant in cooling systems. And most of the new blends use butane as a stabilizing agent to make it less explosive but slightly more flammable.
I have more questions than answers
Josh
Josh
The world is taking an interesting turn when putting explosive gasses in a system that compresses.
Might work okay and be better than destroying the oxone layer but still, you would think we could make some new refrigerant that was just plain perfect, but no.
Might work okay and be better than destroying the oxone layer but still, you would think we could make some new refrigerant that was just plain perfect, but no.
if there's a welder, there's a way
- Otto Nobedder
-
Weldmonger
-
Posts:
-
Joined:Thu Jan 06, 2011 11:40 pm
-
Location:Near New Orleans
Ammonia is a perfectly good refrigerant. I have a few ammonia-cycle refrigerators that can keep my food frozen with barely more heat than a Bic Lighter makes.Olivero wrote:The world is taking an interesting turn when putting explosive gasses in a system that compresses.
Might work okay and be better than destroying the oxone layer but still, you would think we could make some new refrigerant that was just plain perfect, but no.
Toxic as hell, in a leak, but that' s a local issue. No ozone issues, so the global warming folk should stay quiet.
Saw an awesome design that used solar power to drive an ammonia cycle, and barrels of brine to serve as a thermal storage mass to keep it cold when it's dark out. One was sized as air conditioning for a small space, the other as a freezer for long term cold storage. Expensive build, though.
Steve S
- weldin mike 27
-
Weldmonger
-
Posts:
-
Joined:Fri Apr 01, 2011 10:59 pm
-
Location:Australia; Victoria
Put a flint lighter in a milk bottle and fill said bottle up with oxy/lpg or acet mix. put lid back on and the throw said bottle in the direction of the Jokee. The force of the bottle hitting the ground causes the flint lighter to spark. Note do not do this anywhere other than private property, as it will most likely get you fired, expelled and possibly blacklisted.
Return to “Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding”
Jump to
- Introductions & How to Use the Forum
- ↳ Welcome!
- ↳ Member Introductions
- ↳ How to Use the Forum
- ↳ Moderator Applications
- Welding Discussion
- ↳ Metal Cutting
- ↳ Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
- ↳ Mig and Flux Core - gas metal arc welding & flux cored arc welding
- ↳ Stick Welding/Arc Welding - Shielded Metal Arc Welding
- ↳ Welding Forum General Shop Talk
- ↳ Welding Certification - Stick/Arc Welding, Tig Welding, Mig Welding Certification tests - Welding Tests of all kinds
- ↳ Welding Projects - Welding project Ideas - Welding project plans
- ↳ Product Reviews
- ↳ Fuel Gas Heating
- Welding Tips & Tricks
- ↳ Video Discussion
- ↳ Wish List
- Announcements & Feedback
- ↳ Forum News
- ↳ Suggestions, Feedback and Support
- Welding Marketplace
- ↳ Welding Jobs - Industrial Welding Jobs - Pipe Welding Jobs - Tig Welding Jobs
- ↳ Classifieds - Buy, Sell, Trade Used Welding Equipment
- Welding Resources
- ↳ Tradeshows, Seminars and Events
- ↳ The Welding Library
- ↳ Education Opportunities