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Hi All, I understand that commercially available products are being manufactured in the USA with outstanding strength to weight ratios (if you'd call it that). Where would a humble Bachelor of Mechanical Engineering start to learn of such advances when he has only become accustomed to Grade 9 in...

Valuable post unclesid now we are talking... I thought a hex socket was a 6 point tool though??? being a hexagon with 6 sides. For the record guys, in the back blocks of africa only a select few carry allen keys and sorry I cant choose our clients, they choose us. Unclesid might be onto it...

Black is as quenched so good for me. Its the zinc processing after manufacture that needs the mitigation. Youll see in my link that the yellow zinc coating is specified with a post heat at 300 and something degrees to burn off all the hydrogen supposedly. I just want black and paint it as Ive...

fyi http://www.f911.com/fore2b.html They offer in black Ill call and see if they are readily available and get back to you all.

Nice, Ill have a look! Thx. Just had a look and their zinc plated. Anyone know if you can get them in black. Hydrogen embrittlement is a killer!! Great to know of the grade 9 (which is approx 12.9) though!

Thanks for the feed back guys but grade 8 is the approx equivalent to 10.9 and mcmaster only has grade 10.9. See this guys http://www.americanfastener.com/technical/grade_markings_steel.asp american fasteners fabricates bolts only up to 150000 psi or grade 8. I need 12.9 which has approx 20%...

Hi, We are currently searching a fastener, that is readily available in the USA in quantities of 50 maximum say, with a hex head and nut that has a 12.9 or equivalent tensile strength. I come from an Australian engineering background and am unfamiliar with the USA market. I am only familiar with...

Cheers UncleSyd, Do you make your own terminations or buy them from renold direct?

Hi, I need as much good advice on Leaf Chain Design as can be mustered. Competitors in my industry are utilising leaf chain as a means of transferring a cylinders push/pull into a lift with a doubling of speed and distance (everybody has made use of rope conventionally for exactly the same...

MLamping, Thankyou for your reply, this is what I have been doing up until now. Creating perpendicular shell elements at, where I believe, the welding is physically possible (this approach is the most efficient and I can control all aspects easily as it is very clear visually). You say you've...

Thanks for some good feedback guys, Cheers Steve I didnt even try that to see if it works.

Thanks Spongebob, The weld stress is not my concern, does the NX user face have convenient, user friendly tools for midsurfacing, extending and adding 2D elements? There are hints Ansys Workbench may have but they are illuding me. I just dont want to go backwards from the GUI of ansys which is...

My situation is: I am using solidworks to generate designs for manufacture and exporting these designs into Ansys Workbench 12. The designs are weldments made up of common structural grade steel profile and plate. I can successfully extract the midplanes of all profiles in Design Modeller and I...

Thankyou for a reply Jspisich, I found in the meantime an interesting and simple formula from manufacturer Martin: "Hardened teeth on the smaller sprocket of a roller chain drive are recommended if the drive ratio is four to one or greater or if the smaller sprocket has 24 teeth or less and is...

Can anybody assist me or point me in the direction of some good literature regarding the selection of the hardness that the tooth faces of a sprocket used for roller chain should be? The Sprockets we are designing are used with ANSI 1/2" #40 Chain if that helps narrow the scope. Id like to...