Shop Floor Talk  

Go Back   Shop Floor Talk > Welding and Metalworking Forums > Fabrication

Canaweld
SFT Search:   
Reply
 
Thread Tools Display Modes
  #1  
Old 03-13-2014, 08:47 AM
King of Obsolete's Avatar
King of Obsolete King of Obsolete is offline
Published Author
 
Join Date: Jul 2005
Location: KINGDOM Lynn Lake Manitoba
Posts: 2,450
Default Will need lots of magic d5 blade

during the heat of the day yesterday i was able to dis-assemble the d5 blade. the blade is a little broken from hitting all the rocks on the winter road at least twice or maybe 3 times or more. first thing i need to find is the caterpillar measurements so i can measure up the blade to make it fit back on the cat. only problem is the cat is 400kms away and it will take 16hours to drive one way to take measurements.

thansk
KoO
Published Author
Attached Thumbnails
Click image for larger version

Name:	D5 blade km 20 lac brochet march 08 2014 035.jpg
Views:	1678
Size:	71.7 KB
ID:	113970   Click image for larger version

Name:	D5 blade km 20 lac brochet march 08 2014 038.jpg
Views:	1495
Size:	51.1 KB
ID:	113971   Click image for larger version

Name:	D5 blade km 20 lac brochet march 08 2014 040.jpg
Views:	1369
Size:	42.5 KB
ID:	113972   Click image for larger version

Name:	D5 broken blade disassemble march 12 2014 006.jpg
Views:	1425
Size:	71.4 KB
ID:	113973   Click image for larger version

Name:	D5 broken blade disassemble march 12 2014 010.jpg
Views:	1400
Size:	57.0 KB
ID:	113974  

__________________
King of Obsolete
Cat Train Tours
Cat Trains forever or until the snow melts
card carrying member of the Writer's Guild
Reply With Quote
  #2  
Old 03-13-2014, 09:00 AM
Lu47Dan's Avatar
Lu47Dan Lu47Dan is offline
Connoisseur of Old Iron
 
Join Date: Mar 2006
Location: N/W Pa.
Posts: 5,666
Default Very Cold Steel & Rocks

Joey. While getting Army Arctic Training at Camp Ripley in Minnesota, we as equipment operators had a class on what not to do with equipment in Subzero temperatures, one was not to ram rocks with a dozer blade as you could break parts a lot easier than you would think.
Repeat stress always finds the weak spot.
That does not look fun, but I am sure you can fix it.
Dan.
__________________
Tools to Men are like Shoes to Women , you can never have too many !!
Used diesel engines are an adventure anyway you look at them !!
Miller XMT-304 Multiprocess
Miller 10-E Wire Feeder
Miller Spectrum 2050 Plasma Cutter
Hobart AC/DC stick welder
Hobart 175 Mig
Craftsman O/A set
Turbo torch and B-tank
Reply With Quote
  #3  
Old 03-13-2014, 09:10 AM
King of Obsolete's Avatar
King of Obsolete King of Obsolete is offline
Published Author
 
Join Date: Jul 2005
Location: KINGDOM Lynn Lake Manitoba
Posts: 2,450
Default

to build a winter road, all the rocks are hidden with about 2 feet of snow. all the snow has to be plowed off to get the frost to go down. that is when the rocks are found by the blade of the cat. some places the rocks are so bad it looks like god dropped his marble bag. this cat has been plowing for over 10 years and it finally broke big time.

thansk
KoO
Published Author
__________________
King of Obsolete
Cat Train Tours
Cat Trains forever or until the snow melts
card carrying member of the Writer's Guild
Reply With Quote
  #4  
Old 03-13-2014, 09:23 AM
digger doug's Avatar
digger doug digger doug is offline
Not to be used as a Flotation Device
 
Join Date: Jan 2008
Location: NW Pa
Posts: 8,859
Default

This is a very interesting post, Thank you Joey for posting it,
and Dan for the helpfull info.

I hear people from "non cold areas" scoff at these accidents,
"It's mild steel, it'll just bend".
Or they'll even give some numbers:
"It's t-1, it has xx% elongation"

They don't understand charpy impact values at reduced temps.

For example, the neighbor bought a very similar dozer last summer
from salvage, it had rolled....down a cliff, and smashed the ROPS,
dashboard, hood tin, etc.

The local fab shop pulled the whole blade assembly off (pretty
much like what you showed here) and it was bent big time.
Pretzelled up fierce.
They had to cut it all apart and weld in new.

But no cracking at all.

Last edited by digger doug; 03-13-2014 at 10:26 AM.
Reply With Quote
  #5  
Old 03-14-2014, 07:57 AM
Scrapper Greg's Avatar
Scrapper Greg Scrapper Greg is offline
Elite Member
 
Join Date: May 2011
Location: WV
Posts: 3,419
Default

Yes steel does funny things when it gets cold. It changes big time at about -40 or so. Where we bend they break. Kinda glad I'm down here.
__________________
In 2016, I'm voting with Glen Doherty, Tyrone Woods, Sean Smith, and Chris Stevens.
Reply With Quote
  #6  
Old 03-14-2014, 09:36 AM
Ironman's Avatar
Ironman Ironman is offline
Iron Modification Investigator
 
Join Date: Feb 2008
Location: Warburg, Alberta, Canada
Posts: 10,915
Default

One thing to note, when steel crystallizes and breaks from the cold it becomes magnetic around the break. I bought a Case 24B that had been used at Fairbanks military base. After a week of use, one if the loader boom arms broke. It had been welded by someone who imagined they could do it on 2" steel.
I took a compass and went over the other arm and lo and behold, it was cracked in the same area, according to the compass.
So I Vee cut the break on the busted side and left 1/4" in the middle to index to, and when that was done, I cut out the mag metal in the break area on the other arm and did that one....no more trouble.

Joey, is that C frame busted?
__________________
Gerry
It is tempting to blame others for all this, especially those in control of the system, but don’t forget that for decades you voted for people who routinely lied before elections, and told you what you wanted to hear, that you could have it all right now and to hell with the future – well, that future has now arrived. Clive Maund

Even duct tape can't fix stupid ... But it can muffle the sound.

Last edited by Ironman; 03-14-2014 at 09:45 AM.
Reply With Quote
  #7  
Old 03-14-2014, 07:54 PM
akabull's Avatar
akabull akabull is offline
Maine-iac
 
Join Date: Jun 2007
Location: Albany Township, Maine
Posts: 2,240
Send a message via MSN to akabull
Default

I don't know a damn thing about Dozer nor the great white north.....but I do know that I am glad Joey is doing this job and not me! Based on what I've seen of Joey's skill, I'm sure he will be backup a running in no time.
__________________
Chris in Maine
Reply With Quote
  #8  
Old 03-14-2014, 08:15 PM
digr's Avatar
digr digr is offline
The Real Deal
 
Join Date: Apr 2005
Location: Duluth MN
Posts: 6,689
Default

Quote:
Originally Posted by Ironman View Post
One thing to note, when steel crystallizes and breaks from the cold it becomes magnetic around the break. I bought a Case 24B that had been used at Fairbanks military base. After a week of use, one if the loader boom arms broke. It had been welded by someone who imagined they could do it on 2" steel.
I took a compass and went over the other arm and lo and behold, it was cracked in the same area, according to the compass.
So I Vee cut the break on the busted side and left 1/4" in the middle to index to, and when that was done, I cut out the mag metal in the break area on the other arm and did that one....no more trouble.

Joey, is that C frame busted?
Let me see if I have this correct you checked for cracks using a compass
__________________
Drawing by Smartdraw
Reply With Quote
  #9  
Old 03-14-2014, 10:52 PM
LKeithR's Avatar
LKeithR LKeithR is offline
Hey...wait...is there a prize?
 
Join Date: Aug 2011
Location: Langley, B.C.
Posts: 3,942
Default

Quote:
Originally Posted by Ironman View Post
...Joey, is that C frame busted?
Yeah, I was wondering the same--looks like it's the C-frame that's broken. Is the blade itself OK?

Quote:
Originally Posted by digr View Post
Let me see if I have this correct you checked for cracks using a compass
Magnetic particle testing--only works as you get close to the North Pole...
__________________
Keith

Measure twice and cut once...or...wait, was that the other way around?
Reply With Quote
  #10  
Old 03-16-2014, 01:36 AM
FabberMcGee FabberMcGee is offline
Senior Member
 
Join Date: Mar 2011
Location: Fairbanks, Alaska
Posts: 765
Default

Never heard of broken metal being magnetic, that's a cool trick to remember.

When I was working in the oil patch at Prudhoe Bay (top of Alaska) in the early 80's the outfit I was with was drilling a lot of 18" holes in frozen ground for pipeline VSM's (Vertical Support Members). They had several Watson Drills using Pengo augers and in the frozen ground there was a lot of bouncing, chattering and jerking. At -35F they would shut down the drills and everyone but the mechanics would stay in camp until the temperature came back up. The company figured if they ran the machines in colder weather than that, the parts they were breaking were costing considerably more than they were making. Same with the ripper cats, even in shot and fractured (frozen) sand.... shut 'em down.
__________________
"The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it."

“The thing about quotes on the internet is you cannot confirm their validity” Abraham Lincoln
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Web Search:

All times are GMT -5. The time now is 05:43 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.