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- Newsgroups: rec.crafts.metalworking
- Path: sparky!uunet!psgrain!m2xenix!steveh
- From: steveh@psg.com (Steve Hampson)
- Subject: Re: anybody do much blacksmithing? how about forge welding?
- Organization: Pacific Systems Group, Portland Oregon US
- Date: Thu, 21 Jan 1993 07:30:25 GMT
- Message-ID: <1993Jan21.073025.3371@psg.com>
- References: <1993Jan20.220849.18869@organpipe.uug.arizona.edu>
- Lines: 36
-
- In article <1993Jan20.220849.18869@organpipe.uug.arizona.edu> tip@lead.aichem.arizona.edu (Tom Perigrin) writes:
- >I have been trying to forge weld high carbon steel (files or springs)
- >to soft steel to make tools. I have some success when the soft iron
- >almost totally encloses the high carbon, but when the high carbon steel
- >is largely exposed I have a lot of problems with burning. If I
- >heat it to a yellow heat it doesn't seem to weld, but if I heat it to
- >a white heat I get burning and cracks running throughout the high
- >carbon steel.
-
- Tool steels weld at a lower temperature than mild steel. This also
- means that they will meld and burn at a lower temperature also. While
- heating the mild steel to welding temperature, heat the high carbon to
- slightly lower temperature in a different part of the fire. Quickly
- place the tool steel where desired above the fluxed mild steel piece
- without removing it from the fire. The mild steel will protect the
- tool steel a little while both are heated a little more. Pull them
- out and weld.
-
- >Is the high carbon steel more susceptible to Sulfur and other impurities
- >in the coal than soft steel?
-
- No.
-
- >Should I use commercial coke?
-
- I wouldn't. You can ruin your fire pot from the high heat output.
-
- >Should I use a really deep bed of coal? Any suggestions?
-
- A deep bed is always a good idea. Also, building your fire in the form
- of a "cave" helps.
- --
- Steve Hampson steveh@m2xenix.psg.com
- 17624 Schalit Way home (503) 636-6966
- Lake Oswego, OR 97035 work (503) 222-9571
- USA
-