Ti Galling - Reply Digest
petrie@sunrise.stanford.edu
Sender: Charles Petrie <petrie@cdr.stanford.edu>
Date: Wed, 8 Jun 1994 8:52:08 PDT
From: petrie@sunrise.stanford.edu
Reply-To: petrie@sunrise.stanford.edu
To: madefast@cdr.stanford.edu
In-reply-to: <CMM.0.88.770590014.petrie@bimini.stanford.edu>
Subject: Ti Galling - Reply Digest
Message-id: <CMM.0.88.771090728.petrie@bimini.stanford.edu>
All of the replies below got back to David Paddock, who was
overwhelmed with the expertise and very appriciative. This was an
interesting experiment in that a number of Madefast participants
quickly provided useful information. The replies have been slightly
edited for brevity for publication here, as most were not sent to the
whole Madefast list.
cp
---------------
1) 2-Jun petrie@sunri Does Anyone Know about Ti Gallin (1993 chars)
2) 3-Jun dwhitney@MIT [Thomas De Fazio <Thomas_De_Fazi (1403 chars)
3) 3-Jun "J G Moxness Re: Does Anyone Know about Ti Ga (851 chars)
4) 6-Jun OWNS%mimi@ma Galling Resistant Treatments for (2115 chars)
5) 4-Jun Susan_Finger Re: Does Anyone Know about Ti Ga (870 chars)
6) 7-Jun mcdowelj@cps Re: Does Anyone Know about Ti Ga (1514 chars)
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Sender: Charles Petrie <petrie@cdr.stanford.edu>
Date: Thu, 2 Jun 1994 13:46:54 PDT
From: petrie@sunrise.stanford.edu
Reply-To: petrie@sunrise.stanford.edu
To: madefast@cdr.stanford.edu
Subject: Does Anyone Know about Ti Galling?
Message-Id: <CMM.0.88.770590014.petrie@bimini.stanford.edu>
Can anyone answer this question? Perhaps this is another way
Madefast might be useful to US industry - a mailing list of
knowledgeable people.
cp
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Date: Thu, 2 Jun 1994 15:20:57 -0400
From: David Paddock <paddock@yarddog.larc.nasa.gov>
Apparently-To: petrie@sunrise.stanford.edu
Do you have information and/or contacts with people who can tell me
what materials I can use with Ti 6Al-4V to avoid galling. I have a
threaded plug made of titanium that I must mount into a chunk of
metal. I am trying to decide what material to make the chunk out of.
David Paddock
EIT
Lockheed Eng. & Sci. Co.
Hampton, VA
Thank you.
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Stanford Center for Design Research
WWW URL http://cdr.stanford.edu/
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Date: Fri, 03 Jun 94 08:44:01
From: dwhitney@MIT.EDU (Dan Whitney)
To: petrie@sunrise.stanford.edu
Subject: [Thomas De Fazio <Thomas_De_Fazio@qmlink.draper.com>: Re:
[petrie@sunrise.stanford]
regarding a non-galling material to use with titanium, my colleague Tom De Fazio at Draper replies
"cast iron."
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Date: 3 Jun 1994 08:19:47 -0400
From: Thomas De Fazio <Thomas_De_Fazio@qmlink.draper.com>
Subject: Re: [petrie@sunrise.stanford
To: Dan Whitney <dwhitney@MIT.EDU>
Reply to: RE>[petrie@sunrise.stanford.edu: Doe
Cast iron.
Tom
--------------------------------------
Date: 6/3/94 8:14 AM
To: Thomas De Fazio
From: Dan Whitney
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Date: 03 Jun 1994 10:56:10 GMT
From: "J G Moxness" <0090003@CCMAIL.EMIS.hac.com>
Subject: Re: Does Anyone Know about Ti Galling?
To: petrie@sunrise.stanford.edu
Comment: MEMO 1994/06/03 11:38
I have a guy who uses Stainless Bolts into Titanium with a dry film lube (ie
Molybdenum disulfide). Would that be ok?
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From: OWNS%mimi@magic.itg.ti.com
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To: petrie@sunrise.stanford.edu
Subject: Galling Resistant Treatments for Titanium
fr: Tony Hill THIL
cc: Todd Trapp NLOS
Subj: Galling Resistant Treatments for Titanium
-MSG M#= 1158458 FR=RMS9 TO=THIL SENT=06/06/94 09:53 AM
R#=190 ST=C DIV=0001 CC=09779 BY=RMS9 AT=06/06/94 09:53 AM
(94-W298)
Date: June 5, 1994
To: Tony Hill THIL
Copy: Natalie McCune CUNE
Pete Loughlin PTLO
From: Bob Steffen RMS9
Subject: Galling Resistant Treatments for Titanium
Titanium is subject to galling (adhesive wear).
The most common treatments to minimize this problem involve anodically
coating the titanium and applying a dry film lubricant. The anodic
coating provides a hard surface layer and the pores in the coating
serves as a reservoir to retain the additional lubricant film. An
alternative treatment is to use a conversion coating plus lubricant when
it is important to retain some electrical conductivity at the interface.
Specific processes for consideration are:
"Anodize per AMS 2488, Type 2", or "Conversion Coat per AMS 2486",
followed by
"Dry film lubricate per AMS 3084"
or MIL-L-81329, MIL-L-46010, or MIL-L-23398 (depending
on application).
Additional proprietary processes are available from several Chemical
Finishing subcontractors, including General Magnaplate (Arlington, TX).
Best Regards,
Bob Steffen
DSEG Process Engineering Metallurgist, SMTS - Lemmon Avenue
956-6712
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From: Susan_Finger@WYVERN.CIMDS.RI.CMU.EDU
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4 Jun 94 19:01:08 EDT
To: petrie@SUNRISE.STANFORD.EDU
Reply-to: sfinger@ri.cmu.edu
Subject: Re: Does Anyone Know about Ti Galling?
In-reply-to: Your message of Thu, 02 Jun 94 13:46:54 -0800.
<CMM.0.88.770590014.petrie@bimini.stanford.edu>
Date: Sat, 04 Jun 94 19:00:57 -0400
Message-ID: <24365.770770857@WYVERN.CIMDS.RI.CMU.EDU>
Charles,
I don't know about Ti galling - Or who to ask - Except that there's a
newsgroup called sci.engr.manufacturing where people ask that kind of
question and usually get answers.
Susan
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To: petrie@sunrise.stanford.edu
From: mcdowelj@cps.msu.edu (James K. McDowell)
X-Sender: mcdowelj@m31.cps.msu.edu
Subject: Re: Does Anyone Know about Ti Galling?
Cc: mcdowelj@cps.msu.edu, madefast@cdr.stanford.edu, meltsner@ctc.com,
paddock@yarddog.larc.nasa.gov
Charles,
Have you had any replies to this? Are you gathering them and passing them
on to David Paddock?
I am not a metals guy but I passed the question on to a collegue at
Concurrent Technologies Corp, Ken Meltsner, who is. Here is a piece of his
reply:
>I believe Ti likes to gall when rubbed -- it has to do with the
>surface structure after wear. You can either modify the titanium
>(nitride or other coating) or the other piece.
Ken goes on to talk about some proprietary approaches to doing this. He is
willing to field this is if there is interest.
>>> Jim.
------------------------------------------------------------------------
James K. McDowell, Ph.D.
Research Associate
Composite Materials and Structures Center
B100A Research Complex Engineering
Michigan State University
East Lansing, MI 48824-1326
Tel: 517 353-5010
Fax: 517 336-1634
email: mcdowelj@cps.msu.edu
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Stanford Center for Design Research
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