CAD Forum discussion (EN) : Heat Exchanger Heads https://www.cadforum.cz/forum_en/ Sun, 17 May 2026 04:50:33 +0000 Sun, 11 Apr 2010 20:49:12 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://www.cadforum.cz/forum_en/RSS_post_feed.asp?TID=3303 <![CDATA[CAD Forum discussion (EN)]]> https://www.cadforum.cz/forum_en/forum_images/web_wiz_forums.png https://www.cadforum.cz/forum_en/ <![CDATA[Heat Exchanger Heads : The standards we use give knuckle...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=9367&title=heat-exchanger-heads#9367 Author: KobusErasmus
Subject: 3303
Posted: 11.Apr.2010 at 20:49

The standards we use give knuckle radius as 0.1 x main diameter.  If you look up the standards for designing concave end caps for vessels & heat exchangers they all work on that.
 
Hope it helps.
 
Kobus
]]> Sun, 11 Apr 2010 20:49:12 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=9367&title=heat-exchanger-heads#9367 <![CDATA[Heat Exchanger Heads : If thats the case, and help solves...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8856&title=heat-exchanger-heads#8856 Author: tulip3D
Subject: 3303
Posted: 10.Mar.2010 at 15:40

If thats the case, and help solves everything, then why post?

And what sir, would you like to be called?
Novice? Tenderfoot? Greenhorn? Neophyte? Shocked
]]> Wed, 10 Mar 2010 15:40:47 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8856&title=heat-exchanger-heads#8856 <![CDATA[Heat Exchanger Heads : correct me if I&#039;m wrong pal,...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8855&title=heat-exchanger-heads#8855 Author: ilovecad
Subject: 3303
Posted: 10.Mar.2010 at 15:35

correct me if I'm wrong pal, but I usually use the help button when I need help.  I don't know about you, just a suggestion!  And about 8 more posts and I'm a groupie, so I don't appreciate being called a noob!  Thanks]]> Wed, 10 Mar 2010 15:35:06 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8855&title=heat-exchanger-heads#8855 <![CDATA[Heat Exchanger Heads : ilovecad wrote:AutoCAD makes...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8837&title=heat-exchanger-heads#8837 Author: Castor63
Subject: 3303
Posted: 10.Mar.2010 at 00:03

Originally posted by ilovecad ilovecad wrote:

AutoCAD makes a help button for a reason!
If you dont have anything to contribute then dont comment. Your assistance is not what anyone wants]]> Wed, 10 Mar 2010 00:03:21 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8837&title=heat-exchanger-heads#8837 <![CDATA[Heat Exchanger Heads : Boy, this ilovecad noob gotta...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8829&title=heat-exchanger-heads#8829 Author: tulip3D
Subject: 3303
Posted: 09.Mar.2010 at 16:55

Boy, this ilovecad noob gotta solution for everything!]]> Tue, 09 Mar 2010 16:55:03 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8829&title=heat-exchanger-heads#8829 <![CDATA[Heat Exchanger Heads : AutoCAD makes a help button for...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8819&title=heat-exchanger-heads#8819 Author: ilovecad
Subject: 3303
Posted: 09.Mar.2010 at 16:04

AutoCAD makes a help button for a reason!]]> Tue, 09 Mar 2010 16:04:44 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8819&title=heat-exchanger-heads#8819 <![CDATA[Heat Exchanger Heads : Knuckle radius of any fabricated...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8773&title=heat-exchanger-heads#8773 Author: Tankman
Subject: 3303
Posted: 07.Mar.2010 at 22:06

Knuckle radius of any fabricated steel project, needs to be at least the thickness of the material.
 
A knuckle radius for 3/8" thick material should be minimum 3/8".
 
Am I missin' the point?  Sleepy
]]> Sun, 07 Mar 2010 22:06:52 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8773&title=heat-exchanger-heads#8773 <![CDATA[Heat Exchanger Heads : I do have a drawing but all I...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8772&title=heat-exchanger-heads#8772 Author: Castor63
Subject: 3303
Posted: 07.Mar.2010 at 17:14

I do have a drawing but all I dont have is the radius of the knuckle to put the arc in. I thought there may have been something in the details I listed that I was not understanding or something. I am thinking that the arc should just be proportionate to the other dimensions maybe]]> Sun, 07 Mar 2010 17:14:54 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8772&title=heat-exchanger-heads#8772 <![CDATA[Heat Exchanger Heads : I know what a heat exchanger is...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8767&title=heat-exchanger-heads#8767 Author: Tankman
Subject: 3303
Posted: 07.Mar.2010 at 12:59

I know what a heat exchanger is but, I think you need a bit more information to design/draw this one.
 
Can the requester give you a simple sketch? Confused
]]> Sun, 07 Mar 2010 12:59:08 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8767&title=heat-exchanger-heads#8767 <![CDATA[Heat Exchanger Heads : The following is the data I have...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8762&title=heat-exchanger-heads#8762 Author: Castor63
Subject: 3303
Posted: 06.Mar.2010 at 16:24

The following is the data I have been given for the head of a Heat Exchanger but the problem I have is, I am not seeing a knuckle radius. This is being done in 3D

40" ID x 1/2"PL NOM
2:1 SE W/2" SF
SA-516 GR70

Can anyone help me make this head please? The other end of the Heat exchanger is:

16" OD (.375") NOM.
STD Wall Weld Cap
SA-234 WPB]]> Sat, 06 Mar 2010 16:24:23 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=3303&PID=8762&title=heat-exchanger-heads#8762