Machining paremeters for everybody - Page 4

utabintarbo · 11-18-2002, 07:08 AM

No ideas?

bigben2k · 11-18-2002, 12:32 PM

For those interested (me!) here are the NPT thread specs (along with a few more).

Click me

Maybe someone else can post the european counterpart?

bigben2k · 11-18-2002, 06:43 PM

Can anyone make sense of this gibberish?

I'm trying to figure out how much flexing polycarbonate will have, under different thickness, and different pressure.

From:
http://www.bayplastics.co.uk/data%20...20111sheet.htm

Limiting flexural stress

Typical values
90-95

Units
N/mm²

Test method
DIN 53452

BTW: here's an interesting link:
http://www.machinist-materials.com/c...r_plastics.htm

bigben2k · 11-18-2002, 07:11 PM

Still searching...

but I found something interesting: the machinist guide to the US Army!

Fundamentals:
http://155.217.58.58/cgi-bin/atdl.dll/tc/9-524/toc.htm

The tables, all the tables, it's all there:
http://155.217.58.58/cgi-bin/atdl.dl...4/Appa.htm#top

bigben2k · 11-18-2002, 07:12 PM

If that's not enough... Here' s a page to more links:

http://www.machinist-materials.com/links.htm

bigben2k · 11-20-2002, 03:30 PM

Ok, still having problems here... Still trying to find out how much polycarbonate will bend. (and copper, for that matter!)

I found a lot of material data sheets, that have a reference to a "Flexural Modulus", as per ASTM D790 testing methodology, measured in Kg/cm^2. I have no idea what the result means!

Does anyone know what it means?

Nick C · 12-07-2002, 01:48 AM

we can tell already that the fin size can go to 1 mm, as cathar demonstrated... but ususally the hiegh dictates the minimum thicknewss

11-18-2002, 07:08 AM	#46
utabintarbo Cooling Savant Join Date: Jul 2002 Location: Sterling Hts., MI Posts: 496	bump No ideas? __________________ Sarcasm is yet another of the free services we offer!

11-18-2002, 12:32 PM	#47
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	NPT thread specs For those interested (me!) here are the NPT thread specs (along with a few more). Click me Maybe someone else can post the european counterpart? __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

11-18-2002, 06:43 PM	#48
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Can anyone make sense of this gibberish? I'm trying to figure out how much flexing polycarbonate will have, under different thickness, and different pressure. From: http://www.bayplastics.co.uk/data%20...20111sheet.htm Limiting flexural stress Typical values 90-95 Units N/mm² Test method DIN 53452 BTW: here's an interesting link: http://www.machinist-materials.com/c...r_plastics.htm __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

11-18-2002, 07:11 PM	#49
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Still searching... but I found something interesting: the machinist guide to the US Army! Fundamentals: http://155.217.58.58/cgi-bin/atdl.dll/tc/9-524/toc.htm The tables, all the tables, it's all there: http://155.217.58.58/cgi-bin/atdl.dl...4/Appa.htm#top __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

11-18-2002, 07:12 PM	#50
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	If that's not enough... Here' s a page to more links: http://www.machinist-materials.com/links.htm __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

11-20-2002, 03:30 PM	#51
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Ok, still having problems here... Still trying to find out how much polycarbonate will bend. (and copper, for that matter!) I found a lot of material data sheets, that have a reference to a "Flexural Modulus", as per ASTM D790 testing methodology, measured in Kg/cm^2. I have no idea what the result means! Does anyone know what it means? __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

12-07-2002, 01:48 AM	#52
Nick C Cooling Neophyte Join Date: Sep 2002 Location: OREGON Posts: 62	we can tell already that the fin size can go to 1 mm, as cathar demonstrated... but ususally the hiegh dictates the minimum thicknewss

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