Mud-club

Chat & Social => The Bar - General Chat => Topic started by: xmob on January 17, 2005, 16:30:30

Title: A new welding method?
Post by: xmob on January 17, 2005, 16:30:30

I'm sure we all get involved in welding, especially us Landy owners.   :lol:

I don't want to say where I heard this (some anti snoopers may already know), but this sounds interesting.

Steel has friction properties that can allow it to generate incredible heat levels.  Apparently, two pieces of steel, rubbed together in a vacuum, will weld together.  Hmmm.  Anybody know anything about this?

The name Lehr has been mentioned, but I thought he had something to do with glass.  Well, machines with the same name (Lehrs) are use to anneal glass (AFAICR).

Title: A new welding method?
Post by: beast5680 on January 17, 2005, 19:08:36

when i visited the JCB factory some years ago they were friction welding their hydraulic rams together by holding the eye and spinning the rod at high speed then pushing the two together until they were one

Title: A new welding method?
Post by: pritch on January 17, 2005, 19:40:13

Friction welding, and it's variant, friction stir welding (http://en.wikipedia.org/wiki/Friction-stir_welding) have been around for quite some time.

I believe it's been touted as giving a more homogenous grain structure between the weld and parent metal, and having a smaller heat-affected zone.

Title: A new welding method?
Post by: Sooty on January 17, 2005, 20:40:03

Quote from: "beast5680"

when i visited the JCB factory some years ago they were friction welding their hydraulic rams together by holding the eye and spinning the rod at high speed then pushing the two together until they were one

I vist JCB on a regular basis as part of my job so I will ask next time (if I remember) and see what info I can collect.

Title: A new welding method?
Post by: karloss on January 17, 2005, 20:43:55

Lots of axle casings are put together using friction welding. Not sure wether landy ones are one of them tho'

Title: A new welding method?
Post by: Range Rover Blues on January 17, 2005, 21:23:33

Quote from: "karloss"

Lots of axle casings are put together using friction welding. Not sure wether landy ones are one of them tho'

One the front loader, probably not (Us Fordies call it Timken or 'english' axle) but on the salisbury or rear-loaded quite possibly.  The salisbury axle for Escort I/II and Cortina I-V were friction welded.  It wasn't new then, but what is.
Apparently the Japanese (please forgive me if I'm wrong) built ships using electric arc welding before the war.  They sank due to fracturing in the heat effected zone around the welds, which don't give as easily as rivets did.

Title: A new welding method?
Post by: hobbit on January 17, 2005, 21:49:59

Quote from: "karloss"

Lots of axle casings are put together using friction welding. Not sure wether landy ones are one of them tho'

Isn't friction welding what you get when the grease on the wheel bearing doesn't to its job anymore :cry:

You then spend all that time trying to get the racer of the stub

Title: A new welding method?
Post by: karloss on January 17, 2005, 22:43:48

:lol:  :lol:  :lol:  :lol:
Close Kev. It's nearly the same thing. Same principle anyway!!

Title: Re: A new welding method?
Post by: POTASH on January 17, 2005, 22:45:32

Quote from: "xmob"

I'm sure we all get involved in welding, especially us Landy owners.   :lol:

I don't want to say where I heard this (some anti snoopers may already know), but this sounds interesting.

Steel has friction properties that can allow it to generate incredible heat levels.  Apparently, two pieces of steel, rubbed together in a vacuum, will weld together.  Hmmm.  Anybody know anything about this?

The name Lehr has been mentioned, but I thought he had something to do with glass.  Well, machines with the same name (Lehrs) are use to anneal glass (AFAICR).

does that mean i can weld with an hoover :shock: