Here is the link to the earlier discussion ..
http://cs.trains.com/trn/f/111/t/248424.aspx
Edit: Since internal links do not activate.
http://tinyurl.com/ouqzlsu
I've seen plenty of ugly knuckles in the past few years. Ones with big air pockets in them, or other metalurigcal imperfections that were painfully obvious. Not a train handling issue.
It's been fun. But it isn't much fun anymore. Signing off for now.
The opinions expressed here represent my own and not those of my employer, any other railroad, company, or person.t fun any
Remember the photograph of the dangling drawbar and the commentary that followed?
Which would you rather have, that, and all that followed to get it get it back in place, or a broken knuckle, which can be replaced with far less effort and in far less time?
Johnny
schlimm Buslist schlimm How about knuckles and couplers? Imported or domestic? Some railroaders have told me they wonder about the metallurgical quality. I guess those folks don't understand the AAR approval process for safety critical interchange components. Maybe they don't, but they encounter broken knuckes all too often. Would you care to explain the process and how that ensures a quality level that reduces incidence of knuckle failure?
Buslist schlimm How about knuckles and couplers? Imported or domestic? Some railroaders have told me they wonder about the metallurgical quality. I guess those folks don't understand the AAR approval process for safety critical interchange components.
schlimm How about knuckles and couplers? Imported or domestic? Some railroaders have told me they wonder about the metallurgical quality.
How about knuckles and couplers? Imported or domestic? Some railroaders have told me they wonder about the metallurgical quality.
I guess those folks don't understand the AAR approval process for safety critical interchange components.
As discussed in other threads the knuckle is the fuse link in the system, designed to fail if there are excessive draft forces, in order to prevent damage to the far more expensive draft gear. If there is excessive failure, speak to the locomotive engineer about their train handling.
Do we see excessive failures in other imported components?
the AAR approval process requires review of the design, approval of the manufacturing process including metallurgy, and ongoing approval of the quality process (yearly inspections world wide) including possible removal of the quality certification if defective material is sold to an AAR interchange certified car shop.
you can't just import any component you want, if it's safety critical it needs to be AAR certified if it's to be used on interchange equipment.
Starting in the 1880s a high percentage of rails, and wheels, were supplied by Krupp Steel of Germany. This was curtailed during WW1, and again by WW2. An interesting read is "The Arms of Krupp"
herrinchoker
I was employed by the Chicago and North Western Railroad through most of the 1980's as an ultra-sound rail test car operator (much like a Sperry car). I recall the C&NW using some German rail on tight curves around Dixon, IL. It apparently was produced to handle higher stresses typical of higher speed curved rail much like around Dixon.
One other item regarding this subject, the North Western use to have a testing department I believe at the California Ave. shop facilities in Chicago. There they had a lab that inspected and tested many new products used by the railroad including new rail. I was told by one of the lab technicians that the best quality rail (this was around 1988) was produced in Japan and W. Germany and the U.S. rail ranked toward the bottom and England was dead last.
Thanks once again, Mike !
As for me: Doh ! I forgot to mention Railway Track & Structures magazine as a source for info on imported rail, and also for the CF&I Hi-Si and Hi-Cant items.
- Paul North.
Boutet or Flash Butt welds?... Simpler to cut and drag instead of digging in with a rail plow.
(1) DRGW and SP would bar up enough joints until they could get flash butt welds to be affordable. (The old SP cold-welds were a disaster)
(2) SP's troubles with BethSteel had them replacing rail on Tehachapi and other places mainly with CF&I steel, bit also Nippon 141 Hi-Si CWR when it was new, just a function of priority in the mills and who had the technology like PDN said.
C&NW, CA&E, MILW, CGW and IC fan
What about field welds to get very long runs ? Does UP normally have very long runs of rail in the outback ? Know here that rail is often temporary planted in trench below surface of grade crossings until it replaces old rail .
Paul_D_North_Jr "Hi-Cant" (?) tie plates to tilt the rail inward so that the head of the rail better matches the angle/ slope of the wheel treads.
"Hi-Cant" (?) tie plates to tilt the rail inward so that the head of the rail better matches the angle/ slope of the wheel treads.
http://www.steelworks.us/newsite/images/cfi_history_timeline.pdf
CF&I patent for something, perhaps the first quarter-mile rail?
https://www.google.com/patents/WO1991008342A1?cl=en&dq=inassignee:%22Cf+%26+I+Steel+Corp%22&hl=en&sa=X&ved=0CDgQ6AEwBDgKahUKEwigpKSh4dPHAhVLzYAKHb1uAL8
Excerpt from Department of Commerce memorandum (1979)
http://digitalcollections.library.cmu.edu/awweb/awarchive?type=file&item=497792
A detailed Section 702 study has been requested regarding the plans of an existing basic steel producer [Wheeling-Pittsburgh Steel Co.] to build a new rolling mill to produce steel rails and tie plates for the domestic railroad industry. The proposed rails and tie plates will be sold nationally and will compete with both domestic production and imports…
Until 1977, five rail mills accounted for all U.S. shipments. All of these mills were initially constructed prior to World War II. Bethlehem Steel had two plants (Lackawanna, New York and Steelton, Pa.); U.S. Steel had two mills (Gary, Indiana, and Birmingham, Alabama); and CF&I, one plant (Pueblo, Colorado)…
Imports of rail, like many other steel products, are subject to the recently implemented steel reference price system. Some fears have been expressed that lower priced foreign imports might move in to supply any increase in the domestic demand for rail. While such imports are likely to continue, they are unlikely to expand on the scale feared by some for the following reasons, (a) Selling prices and volume of imports appear to be better monitored than at the beginning of the program, (b) The fall in the value of the dollar compared to foreign currencies adds an extra measure of protection, (c) Substantial government assistance to railroads for track rehabilitation, and to urban mass transit programs, militates against major foreign purchases. (A recent attempt by Conrail to buy foreign rail was blocked by Congressional action.) The proposed new rail mill, plus improvements in existing U.S. manufacture of rails, should also make it unnecessary for U.S. railroads to buy offshore for reasons of quality. The question of quality is discussed further below. Overall, it seems most likely that any additional demand for rail will be met primarily by domestic suppliers.
Paul_D_North_Jr3 pieces, and just 2 'interior' welds are required: 480 ft. + WELD + 480 ft. + WELD + 480 ft. = 1,520 ft.
Yes, but 480 x 3 = 1440 ft., not 1520.
K. P. HarrierHow does one get a quarter of a mile (1,320-feet) single ribbon rail out of 480-foot lengths with just two welds (as per the UP press release)?
AREA (now AREMA) - and perhaps other organizations/ agencies (STB or FRA) publishes annual figures as to the quantities and weights (sizes) of rail produced each year. It's been a while since I looked at one, but I believe foreign rail is listed separately. It should be possible to go back through those or the trade press articles (Railway Age, Modern Railroads, etc.) and find out when importing rail started.
I'd concur with timz that it definitely wasn't in the 1960's - I'd say early 1980's, when the US steel market started undergoing some major changes (mostly negative).
I too believe that the Nippon rail was mainly used for high wear and stress areas such as curves. But CF&I had some special features for curves, too - "Hi-Si" (high silicon) rails, and "Hi-Cant" (?) tie plates to tilt the rail inward so that the head of the rail better matches the angle/ slope of the wheel treads.
Perhaps Mike/ wanswheel can find that info . . .
K. P. Harrier[snipped - PDN] . . . How does one get a quarter of a mile (1,320-feet) single ribbon rail out of 480-foot lengths with just two welds (as per the UP press release)?
480 ft. + WELD + 480 ft. + WELD + 480 ft. = 1,520 ft.
Probably a few 'short' rails in there to keep it down to 1,320 ft., which is unlikely - there's no magic to any particular length as welded. As I noted in that other thread, it's not much of a problem for the welding plant to make custom lengths, or to add a few more cars to a rail train to be able to carry a longer length than normal. One of my projects had 8 rails, each 1,660 ft. long, to minimize the number of field welds that would be needed.
The length you get, 1440', has been a familiar 'standard' length for CWR for a long time. (Didn't we have a discussion on this not too long ago with some "experienced" commentary?)
I don’t get it, fellas.
How does one get a quarter of a mile (1,320-feet) single ribbon rail out of 480-foot lengths with just two welds (as per the UP press release)?
----------------------------------------------------------------------------------------------------------------------------------- K.P.’s absolute “theorem” from early, early childhood that he has seen over and over and over again: Those that CAUSE a problem in the first place will act the most violently if questioned or exposed.
I'm guessing foreign rail was pretty rare in, say, the 1960s. Don't recall if it was the 1970s or the 1980s that Nippon rail started appearing on SP. And most new SP rail was probably still CF&I-- the Nippon rail was just for curves?
"+1" on NorthWest's girder rail response above.
One factor not mentioned yet is availability or delivery. If the mill is at capacity - and in a busy year, they all are, because none of them were built with a huge amount of excess capacity, for obvious reasons - then there's no place else in the US to go to for rail. Also, their rolling schedules are made up months in advance, so there's not much flexibility to add or change a quantity. For some items - crossing frogs come to mind - a backlog of 6 months is common (and even then they don't always make the delivery date . . . ).
Finally, there's the issue of price, which is often quoted as "Price in effect at time of shipment". In English, that means"We'll tell you what the actual price is after we've made it, loaded it, and it's on the way to you". (Kind of like a restaurant saying that the price of your meal will be determined when it's on the way to your table - not what it was when you ordered it.) It often seems to include just about everything - fuel costs, increase in labor contracts, raw materials, etc. - and always seems to go up, not down, and especially just before my shipment !
Importing rails is primarily about the type of rail, not the cost. As Wizlish notes, US mills do not produce the really long rails that UP wants, so they are imported from Japan on UP's ship Pacific Spike.
http://www.up.com/aboutup/community/community_ties/longrail.htm
Also, no one makes streetcar girder rail in the US, so it is imported (I think from somewhere in Europe).
JoeBlowSecond, is the reason strictly cost related or do foreign mills produce certain types of rail our domestic mills do not?
We had a thread on this not too long ago -- the present 'importation' being that the rail is provided in longer lengths as received from the ship, requiring fewer yard or field welds when placed in track. (Note that the Asian supplier has actually had a special ship built to handle the greater lengths!)
At least one of our 'domestic' LWR-producing mills is now foreign-owned (Russian) - does that matter?
The first foreign rail was purchased from England in 1828 to be used on the Baltimore & Ohio's first lines. Foreign rail has been purchased by the carriers from that time until the present. Each carrier has their own reasons for making the purchases that they do. It may be price, it may be quality, it may be personal relationships between the parties involved.
Never too old to have a happy childhood!
When did US railroads like the Union Pacific start using imported steel rails?
Second, is the reason strictly cost related or do foreign mills produce certain types of rail our domestic mills do not?
Third, which countries are the biggest suppliers?
Finally, which US railroads are the biggest buyers?
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