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Metal and Metallurgy engineering | Forum profile
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Forum profile page for Metal and Metallurgy engineering on http://www.eng-tips.com.
This report page is the aggregated overview from a single forum: Metal and Metallurgy engineering, located on the Message Board at http://www.eng-tips.com.
This forum profile page summarizes the general forum statistics such as: Users Activity, Forum Activity, and Top Authors, which are reported in either a table or graph below for a given reporting time period.
Additional forum profile information for "Metal and Metallurgy engineering" on the Message Board at http://www.eng-tips.com is also shown in the following ways:
1) Latest Active Threads
2) Hot Threads for Last Week
Warning: These statistics are generated using 'best efforts' and can experience delays and reporting errors at times. Please note that such statistics do not constitute a forum's popularity and/or exact posting volumes at any given reporting period.
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Posting activity on Metal and Metallurgy engineering:
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3 Months
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Threads:
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32
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Post:
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Metal and Metallurgy engineering Posting activity graph:
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Top authors during last week:
user's latest post:
aluminum i beam capabilities
Published (2009-11-14 11:09:00)
srhodes; I would recommend you post in the forum below for help with design forum507: Structural engineering other technical topics
user's latest post:
AM355 Forgings alternative material
Published (2009-11-14 21:54:00)
( AM-355 Category Steel Class Stainless steel Type Precipitation-hardening nonstandard Designations United States: UNS S35500 Mechanical Properties Properties Conditions T \(?C\) Treatment Density \(?1000 kg/m3\) 7.7-8.03 25 Poisson's...
user's latest post:
Thermal expansion. Permanent?
Published (2009-11-11 11:31:00)
imcjoek It has been my experience the a sub zero treatment -100 Deg F or better yet -300 Deg F really helps with stability, with the issue such as yours. the double & triple temper also helps. Ask your supplier for the process sequence, as it is important in the manufacturing game. It is also important to be informed of the heat treat process. this where most failures happen. discuss the options with the heat treater. obtain material...
user's latest post:
Elongation at break vs Yield...
Published (2009-11-07 22:05:00)
CR100, Although I can't answer your specific question, I'd suggest that you ignore that second set of test data. You won't get a combination of 310KSI UTS and 12% elongation in any alloy that I know of (including multi-phase or Aermet). Regards, Terry
user's latest post:
aluminum i beam capabilities
Published (2009-11-14 10:56:00)
Hi shrodes How is the beam supported:- built in, simple suports I assume but I need to know. desertfox
user's latest post:
SHaft Materials
Published (2009-11-08 15:54:00)
That material may be usable for your shaft, though lower carbon steels (e.g. 1050) are more common. For a BS equivalent, try C60 according to BS EN 10083.
user's latest post:
Elongation at break vs Yield...
Published (2009-11-08 23:46:00)
Metengr, in our situation there is dynamic loading, so toughness is very important. But I was looking for a correlation between toughness and elongation at break. But comparing sample 1 and 2, sample 2 UTS-YS= 7 ksi, while sample 1 UTS-YS=36ksi. While both samples had identical elongation at break. Which puzzles me. I would expect the sample 2 elogation at break to be...
user's latest post:
tundish cover powder?
Published (2009-11-12 14:01:00)
Not on your particular application I've seen MgO wash, Kaolin wash, and graphite wash used for slag and molten metal problems. I've used products fro ZYP for some very high temperature molten refractory slag/glass problems. You might want to them a call. http://www.zypcoatings.com/index.htm
user's latest post:
Thermal expansion. Permanent?
Published (2009-11-11 10:25:00)
Thanks for all the comments. The idea was for the clearance to be removed as the machine reached operating temperature. Hence the .0006 difference in expansion desertfox mentions was (somewhat) planned. The idea was for the ring to *just* snug up on the shaft when at operating temperature. This worked fine (the first time!) Unfortunately I expected that the ring would shrink back down...
user's latest post:
17 4PH stablilization and...
Published (2009-11-11 13:49:00)
It was all I wanted to know. Final conclusion is heat treatment at 850?C rises elongation. Duclility is inchanged or lower. YS & UTS are much lower. Thank you very much indeed.
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Latest active threads on Metal and Metallurgy engineering::
Started 1 day, 9 hours ago (2009-11-14 21:41:00)
by rneill
You might try a quick google search on something like this. I found this as the first link up ... http://www .suppliers online.com /propertyp ages/Alloy 355.asp#Re latedNames
Started 1 day, 23 hours ago (2009-11-14 07:07:00)
by desertfox
Hi srhodes What do you want help with? only your post doesn't say. desertfox
Started 3 days, 16 hours ago (2009-11-12 14:01:00)
by unclesyd
Not on your particular application I've seen MgO wash, Kaolin wash, and graphite wash used for slag and molten metal problems. I've used products fro ZYP for some very high temperature molten refractory slag/glass problems. You might want to them a call. http://www.zypcoatings.com/index.htm
Started 5 days, 17 hours ago (2009-11-10 13:18:00)
by swall
When you heat the ring, you are re-tempering it each time. This would normally cause the ring to shrink, as tempering causes a decrease in the volume of the martensite. But, it can't shrink like it wants to, since it is constrained by the shaft. The stresses imposed by the constraint of the shaft have acted on the ring, causing it to expand. You should also be observing a decrease in ring ...
Started 5 days, 13 hours ago (2009-11-10 17:05:00)
by remetaper
Lukas, Please excuse me but I am unware the acronym ITN and what means. Stabilization is not a heat treatment typical of this grade as well as ITN suggests. 174PH approximately has AC1 = 630°C (1160F) and AC3= 710°C( 1300F). In order the largest amount of Cu could be dissolved in Austenite, it must be treated at 1040°C (1900F. This heat treatment is called " Condition A " or Annealing (ASTM ...
Started 1 week, 2 days ago (2009-11-06 22:55:00)
by EdStainless
( What is the reduction in area at the fracture? Can you measure elongation dynamically during the test? Have you carefully looked at each sample for external reasons \(inclusions, surface defects, notches\)? , )
Started 6 days, 12 hours ago (2009-11-09 17:59:00)
by berkshire
Try this group for a cross reference chart. http://www.steelforge.com/crossreference.htm B.E.
Started 1 week, 6 days ago (2009-11-02 12:36:00)
by unclesyd
I've used Bearium Bronze on quit a number of deck winches on large shrimp boats with very good results. As you state lack of lubrication is an ongoing problem which is well covered by the Bearium alloys as they will hold up quite well running dry. http://ww w.metaltek .com/divis ions/south ern-centri fugal.html htt p://www.me taltek.com /alloy-gui de/non-fer rous/beari ng-bronze/
Started 1 week, 3 days ago (2009-11-05 22:00:00)
by tbuelna
gnzlezgonz, Some suggestions: 1) Try purging the internal volume with shielding gas during welding. 2) Double check to be sure that all of your parts are the 6061 alloy that you think they are. 3) Although it's hard to tell from your sketch, it appears that there is some significant change in local section thickness between the two mating parts in the joint. If so, this would likely ...
Started 1 week ago (2009-11-08 13:29:00)
by metengr
What are the service conditions for this pump - meaning fluid and temperature?
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Hot threads for last week on Metal and Metallurgy engineering::
Started 5 days, 17 hours ago (2009-11-10 13:18:00)
by swall
When you heat the ring, you are re-tempering it each time. This would normally cause the ring to shrink, as tempering causes a decrease in the volume of the martensite. But, it can't shrink like it wants to, since it is constrained by the shaft. The stresses imposed by the constraint of the shaft have acted on the ring, causing it to expand. You should also be observing a decrease in ring ...
Started 1 week, 2 days ago (2009-11-06 22:55:00)
by EdStainless
( What is the reduction in area at the fracture? Can you measure elongation dynamically during the test? Have you carefully looked at each sample for external reasons \(inclusions, surface defects, notches\)? , )
Started 1 day, 23 hours ago (2009-11-14 07:07:00)
by desertfox
Hi srhodes What do you want help with? only your post doesn't say. desertfox
Started 5 days, 13 hours ago (2009-11-10 17:05:00)
by remetaper
Lukas, Please excuse me but I am unware the acronym ITN and what means. Stabilization is not a heat treatment typical of this grade as well as ITN suggests. 174PH approximately has AC1 = 630°C (1160F) and AC3= 710°C( 1300F). In order the largest amount of Cu could be dissolved in Austenite, it must be treated at 1040°C (1900F. This heat treatment is called " Condition A " or Annealing (ASTM ...
Started 1 week, 2 days ago (2009-11-06 20:27:00)
by MikeHalloran
( It's 'art', not 'design', until you know the stresses. , )
Started 1 week ago (2009-11-08 13:29:00)
by metengr
What are the service conditions for this pump - meaning fluid and temperature?
Started 1 day, 9 hours ago (2009-11-14 21:41:00)
by rneill
You might try a quick google search on something like this. I found this as the first link up ... http://www .suppliers online.com /propertyp ages/Alloy 355.asp#Re latedNames
Started 1 month, 1 week ago (2009-10-07 18:26:00)
by EdStainless
( i don't think that your cooling method will do anything to reduce stresses. You would get the same result reheating to 1000 and then slow cooling. , )
Started 3 days, 16 hours ago (2009-11-12 14:01:00)
by unclesyd
Not on your particular application I've seen MgO wash, Kaolin wash, and graphite wash used for slag and molten metal problems. I've used products fro ZYP for some very high temperature molten refractory slag/glass problems. You might want to them a call. http://www.zypcoatings.com/index.htm
Started 1 week, 3 days ago (2009-11-05 22:00:00)
by tbuelna
gnzlezgonz, Some suggestions: 1) Try purging the internal volume with shielding gas during welding. 2) Double check to be sure that all of your parts are the 6061 alloy that you think they are. 3) Although it's hard to tell from your sketch, it appears that there is some significant change in local section thickness between the two mating parts in the joint. If so, this would likely ...
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