Honda factory mig welds the frames

nmdesertrider · Post by **nmdesertrider** » March 23rd, 2010, 6:29 am

At least that's what my welder says. I brought in frame #2 for him to weld and he was inspecting the frame and he's sure that they were made with a mig.

gregrobo · Post by **gregrobo** » March 23rd, 2010, 7:01 am

the internal welds look like robotic mig welded but most of the external welds are robotic tig

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » March 23rd, 2010, 9:12 am

nmdesertrider wrote:At least that's what my welder says. I brought in frame #2 for him to weld and he was inspecting the frame and he's sure that they were made with a mig.

we think the same

asteroid500 · Post by **asteroid500** » March 26th, 2010, 5:45 am

The boys at our workshop recon it's robotic mig as well.

"SOLID Bro!!" · Post by **"SOLID Bro!!"** » March 26th, 2010, 8:14 am

I Agree. There's not enough people over there to keep up with production.

I know there is a lot of them but not enough.

I sat it's all robotic.

Post by **AlisoBob** » March 26th, 2010, 8:24 am

[quote=""SOLID Bro!!""]

I say it's all robotic.[/quote]

I dunno'...... Look at all the exterior TIG work... every frame I've ever seen looks different. Wouldnt Robo-Tig all look the same?

"SOLID Bro!!" · Post by **"SOLID Bro!!"** » March 26th, 2010, 8:38 am

AlisoBob wrote:[quote=""SOLID Bro!!""]

I say it's all robotic.

I dunno'...... Look at all the exterior TIG work... every frame I've ever seen looks different. Wouldnt Robo-Tig all look the same?[/quote]

I think that it depends on welding conditions.

The robot I had ( like most ) you must manually program. Depending on your fixturing and torch position.

My opinion is that not all robotic welders are the same. Kind of like a good welder knows the difference by welding on a different welder.

It could be the same make, same model, but one always works better than the other depending on preference.

You would understand that not all baseball bats are not the same.

100hp honda · Post by **100hp honda** » March 26th, 2010, 1:45 pm

is mig welds heat treatable ? only reason i ask is because im 99.9999% sure the frames are treated (atleast the gen3 cr250). you can see the weep holes in various strategic places on the frame. another thing got me thinking, someone said a while back they was sure there was 7xxx series in some parts of the frame, i thought 7xxx series wasnt considered weldable ? im betting every bit of the frame is 6061 T6 (or atleast 6xxx series) that was treated after welding, just my thoughts.

gregrobo · Post by **gregrobo** » March 26th, 2010, 4:04 pm

100hp honda wrote:is mig welds heat treatable ? only reason i ask is because im 99.9999% sure the frames are treated (atleast the gen3 cr250). you can see the weep holes in various strategic places on the frame. another thing got me thinking, someone said a while back they was sure there was 7xxx series in some parts of the frame, i thought 7xxx series wasnt considered weldable ? im betting every bit of the frame is 6061 T6 (or atleast 6xxx series) that was treated after welding, just my thoughts.

all metal is heat treatable. the holes are also there to relieve pressure when welding at our workshop we have a dual pulse mig that can produce welds that look like tig welds with the correct set up. the interior welding is mig weld and the exterior welds that are seen are tig welded all by robots

asteroid500 · Post by **asteroid500** » March 27th, 2010, 3:28 am

With alloy ANY contaminants will effect the final look of the weld, even a sweaty hand print can tarnish a weld

gregrobo · Post by **gregrobo** » March 31st, 2010, 8:00 am

asteroid500 wrote:With alloy ANY contaminants will effect the final look of the weld, even a sweaty hand print can tarnish a weld

thats one reason i dont like welding aluminium prepped by customers most people use standard cutting and grinding discs then think they are doing the right thing by flap discing the weld area tungsten dics only way to go

cryzsurfer · Post by **cryzsurfer** » April 1st, 2010, 7:48 am

On frames like this robotic welding is done on much of it to speed it up and reduce costs. TIG is used for the areas that are visually apparent plus on areas known as "wraps". MIG doesn't do well on wraps as it will build up a ton and require manually blending in or sweating in with the TIG torch. 7XXx series is weldable as the Honda frame is a 7XXX. 7005 is used on bicycles and motorcycles. I had the piece off my 04 CRF250 frame zapped at work and it is 7XXX series. I posted the percentages in it on another post. Heat treating is done at the factory but I don't like to do this when I mod a frame. You have to do a solution treat at ~ 1000F followed by a water quench. This is problematic as it will cause warpage and if it isn't drilled in all blanked off areas it will split. You then do an age at ~350 F for X hours. I think if you prepare your frame wisely gusset it and make sure to get full penetration on your butt welds it won't break without heat treating. This is just my humble opinion.
Craigus

BannedCR500Riders.com