Search found 121 matches

by lazerbeam
Sun Feb 21, 2016 6:22 pm
Forum: Welding Forum General Shop Talk
Topic: First Projects, First Welding machine - suggestions please!
Replies: 21
Views: 2495

Re: First Projects, First Welding machine - suggestions plea

The amount of stick welding done above 150 amps is very little overall. If you have to weld thicker metal, then you just run multiple passes. For example, if I am going to weld a 3/8" lap joint (fillet weld) then I am going multi-pass this joint and I plan that from the beginning. Usually 3 pas...
by lazerbeam
Mon Feb 08, 2016 6:33 pm
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Setting a miller 252 for spray transfer
Replies: 14
Views: 11686

Re: Setting a miller 252 for spray transfer

Are you referring to a SENSE Level One certification?

Regardless, spray transfer is limited to flat and horizontal fillets.
by lazerbeam
Sun Feb 07, 2016 3:16 pm
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Setting a miller 252 for spray transfer
Replies: 14
Views: 11686

Re: Setting a miller 252 for spray transfer

80% argon is required for spray. Spray is limited to flat and horizontal fillets. You can spray with 90/10 and also short circuit with 90/10. If you need to weld in positions other than flat and horizontal and cannot use short circuit then you need to consider FCAW-gas shielded. GMAW short circuit f...
by lazerbeam
Tue Oct 28, 2014 3:38 pm
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Teaching conditions
Replies: 10
Views: 1092

Re: Teaching conditions

Hey, I got my first welding experience in Ag. Mechanics and liked it so much that I majored in Ag. Ed. and taught Ag. Mechanics for 32 years. I teach welding part-time at a community college now and I can relate to what you are saying. Some of it is bad info, some is bad training and some of it is j...
by lazerbeam
Thu Sep 11, 2014 11:51 am
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Soft vs. Crisp?
Replies: 11
Views: 5789

Re: Soft vs. Crisp?

Crisp is for 6010/11 electrodes and soft is for everything else. Is your welder a 350 pro?

Kevin
by lazerbeam
Wed Sep 03, 2014 12:23 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Help!!! how the heck do u get a backing plate off?
Replies: 33
Views: 3856

Re: Help!!! how the heck do u get a backing plate off?

Saw out your test strips and then scarf off the backing with oxy-fuel being careful not to gouge the root. If you can break them off with a hammer and chisel the weld would fail anyway because the root pass is supposed to fuse all three pieces together.

Kevin
by lazerbeam
Wed May 14, 2014 12:21 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: AWS D 1.1 Weld Cert
Replies: 11
Views: 3119

Re: AWS D 1.1 Weld Cert

There is no variance listed in the code book because it has a backing bar. Open root welding leaves some room for the welder to adjust things to their preference such as root face and root gap.
by lazerbeam
Wed May 14, 2014 12:11 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: TIG weld on Mild Steel_WPS parameters
Replies: 6
Views: 1261

Re: TIG weld on Mild Steel_WPS parameters

You also have to qualify GTAW under D1.1. GTAW and GMAW-S are not pre-qualified processes under the D1.1 welding code.
by lazerbeam
Tue May 06, 2014 1:16 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: need stick welding opinion
Replies: 10
Views: 1225

Re: need stick welding opinion

You can make a gusset if you are worried about the v welds but I don't see a problem with what you have done. Weld the channel on both sides and head to the lake.
by lazerbeam
Mon May 05, 2014 12:18 pm
Forum: Welding Certification - Stick/Arc Welding, Tig Welding, Mig Welding Certification tests - Welding Tests of all kinds
Topic: Which Certification
Replies: 17
Views: 3164

Re: Which Certification

Just keep liability in mind with whatever you are building or repairing. Stuff going over the road has a certain, built in liability. It is kind of like kids throwing rocks, it is all good until someone starts bleeding.
by lazerbeam
Mon May 05, 2014 12:11 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: need stick welding opinion
Replies: 10
Views: 1225

Re: need stick welding opinion

Donald, I used to have to replace quite a few cross members in truck beds on (Cement) block trucks. They were V'd in the middle similar to a boat trailer. I would only cut a notch from the top down to the bottom flange of the channel leaving the bottom flange intact. This adds an incredible amount ...
by lazerbeam
Thu Apr 24, 2014 1:40 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: AWS D 1.1 Weld Cert
Replies: 11
Views: 3119

Re: AWS D 1.1 Weld Cert

The root gap is supposed to be 1/4" if the groove angle is 45*, or 3/8" if the groove angle is 30* and 1/2" if the groove angle is 20*. 60* groove angle (30* bevel angle) and 1/8" root opening is commonly used for open root welds but usually with a 1/8" root face (land). Wit...
by lazerbeam
Tue Apr 22, 2014 1:11 pm
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Straight CO2
Replies: 4
Views: 890

Re: Straight CO2

CO2 is for short-arc only and you generally need to run it 1 to 2 volts higher than 75/25 because straight CO2 has less ionization potential than mixed gas because of the argon. It does require a little more fine tuning and ctwd (stick-out) control to get a smooth spatter free weld.
by lazerbeam
Thu Apr 17, 2014 10:40 am
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Dodge bumper build
Replies: 23
Views: 2618

Re: Dodge bumper build

Just keep in mind that when you build a really strong bumper and then hit something you will find the next weakest link in the chain. In my case it was the frame of the truck. The bumper survived (to be sold) after some new mounting brackets but the truck had to have the frame pulled. The jolt to dr...
by lazerbeam
Thu Apr 17, 2014 10:16 am
Forum: Welding Certification - Stick/Arc Welding, Tig Welding, Mig Welding Certification tests - Welding Tests of all kinds
Topic: Which Certification
Replies: 17
Views: 3164

Re: Which Certification

Question: If you run your own business and you have an AWS D1.1 certification, how do you maintain that certification? The form and fee have to be sent in every 6 months and you cannot sign off on your own certification.
by lazerbeam
Thu Apr 03, 2014 11:10 am
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Certified welders?
Replies: 23
Views: 2092

Re: Certified welders?

Just keep in mind that AWS D1.1 does not allow short circuit GMAW without going through a procedure qualification. So if you want to qualify welders to that code it will definitely be AW$$$$$'s.
by lazerbeam
Fri Mar 28, 2014 12:19 pm
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: 98/2 mixed gas
Replies: 11
Views: 1157

Re: 98/2 mixed gas

90/10 will spray and short circuit so you can do both with the same gas. The transition current is just a little bit higher as opposed to 98/2.
by lazerbeam
Wed Feb 26, 2014 9:33 am
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Chipping a hot weld?????
Replies: 18
Views: 4320

Re: Chipping a hot weld?????

Do not chip a weld until the red disappears. 6011 is just a 6010 with arc stabilizers added for welding on AC current. If they are welding a lot different from 6010 then you are doing something wrong. Whips should be kept short (2 to 3 x rod diameter). All electrodes have a place and will work if th...
by lazerbeam
Mon Feb 10, 2014 1:24 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Can Aluminum be TIG welded with DC+
Replies: 22
Views: 3919

Re: Can Aluminum be TIG welded with DC+

Some inverters do not have the capability to weld DCEP because the shielding gas comes through the DCEN side and you only have the option to switch to AC welding. If you plug in the tig torch to the + side then you will not have shielding gas and your tungsten will pop as soon as you light up.
by lazerbeam
Mon Feb 10, 2014 1:18 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Tig Nozzle
Replies: 19
Views: 3158

Re: Tig Nozzle

Rule of thumb is 4 times the diameter of the tungsten and I usually add one size for aluminum and you can add a size if adequate shielding is an issue. If you have more cup than you need you are just wasting shielding gas. 1/16" tungsten = 4/16" = #4 cup 3/32" tungsten = 12/32" =...
by lazerbeam
Fri Jan 24, 2014 4:13 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: need some advice. ..
Replies: 7
Views: 1116

Re: need some advice. ..

Matt, please remember to use 6011, 6010's when you are teaching in your shop after you graduate. I have fought against 6013's being the all purpose rod for Ag. mechanics since 1978 and finally got a few other Ag. teachers on my side. I taught Ag. Mechanics for 32 yrs. in N.C. and now I teach welding...
by lazerbeam
Fri Jan 24, 2014 4:06 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: suck~back
Replies: 14
Views: 11376

Re: suck~back

Which method are you using to put your root in. If you are burying the rod then you need to put a little more pressure on the rod. If you are whipping then you need to see a keyhole. Which ever method you use, it is a combination of amps, root face and root opening. You will have to find out what wo...
by lazerbeam
Thu Jan 23, 2014 11:18 am
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: need some advice. ..
Replies: 7
Views: 1116

Re: need some advice. ..

Keep your arc length consistently tight and watch the edges of your puddle. That will tell you when to whip and how long to pause. BTW your beads are solid, just a little fine tuning needed.
by lazerbeam
Wed Jan 22, 2014 12:42 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: need some advice. ..
Replies: 7
Views: 1116

Re: need some advice. ..

Rate of travel and arc length seem to be the main issues. Are you whipping and pausing?
by lazerbeam
Wed Jan 22, 2014 12:40 pm
Forum: Welding Forum General Shop Talk
Topic: best all around helmet?
Replies: 50
Views: 6925

Re: best all around helmet?

I have a Jackson Nexgen for tig and a Jackson big lens passive for everything else. Actually I use my old Jackson passive for most all of my welding. It is lighter than the nexgen and I keep my helmet on all the time. I bought the passive helmet in the 80's and I am now on my 3rd headgear. If you ar...