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Participant

Join Date: Oct 2014
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Manufacturing

10/06/2014 8:56 PM

Hello,

I am looking at a print from the 1930's. It gives a description as follows.

2x8 S. PL. #2001

This is a description for material of a bracket. I know it is steel but looking for specific type. I need to have a crack welded. I am thinking cold rolled steel. Any suggestions greatly appreciated.

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#1

Re: Manufacturing

10/06/2014 9:10 PM

To me this says, (PN) #2001 bracket in 8 places. The S. is puzzling, but I wasn't born until 1947.

#2001 may be a reference to a bill of materials.

If a magnet sticks to it and it isn't rusted, just use a MIG welder with mild/carbon steel welding wire.

It'll be fine.

A picture might help.

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#2
In reply to #1

Re: Manufacturing

10/06/2014 9:22 PM

One contractor did some MIG welding on the pieces. Did ok. Should have pre heated the base first, because one could tell not very good weld penetration on some welds. Next contractor coming in is going to stick weld. I figure the standard 6010 root, with some 7018 cover pass to fill out.

I can make sense of the other abbreviations in the prints. C. RS. should be cold rolled steel, and so forth.

Thanks.

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#3

Re: Manufacturing

10/06/2014 9:59 PM

steel plate...?

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#4
In reply to #3

Re: Manufacturing

10/06/2014 10:38 PM

Its steel plate. Just trying to find out what kind. 1930'S generator from hydro unit

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#5
In reply to #4

Re: Manufacturing

10/06/2014 10:44 PM

20 questions?

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#6
In reply to #5

Re: Manufacturing

10/07/2014 12:49 AM

Are we down to 17 now, or up to 23?

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#7
In reply to #6

Re: Manufacturing

10/07/2014 3:08 AM

AAnd would it matter which? (16/24)

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#8

Re: Manufacturing

10/07/2014 7:06 AM

if there are any other similar notes maybe one can the decipher the drafting standard.

Otherwise with the information here, any response is a guess.

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#9

Re: Manufacturing

10/08/2014 11:24 AM

Depending on how critical these brackets are to plant safety (hydroelectric), you should hire someone with a good PMI gun (or atomic emission tester), find out the precise alloy involved (and if carbon steel, you need to know precisely the carbon content which most PMI guns will not give you). Another option is to have a sample cut off and sent for complete identification analysis, as this cost is far less than catastrophic failure.

On the other hand, how sure are you this "bracket" is not cast iron, or cast ductile iron? Did the fracture show anything about grain size - typical of cast iron failure. In the 1930's there were a lot of cast steel parts around, as I am told. If your welding protocol does not match up with the alloy type, the built up stresses from welding will result in a quick failure of the part.

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#10

Re: Manufacturing

10/11/2014 1:29 AM

Do you have a back smith close. Or someone who can ID steel from the shape and colors, from grinding a small section? Sure fire way to get pretty close to metal type. Good Luck

Fixit

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