Recent content by Graybags

I regulary use A4-70 fasteners for non pressure containing bolting in salt spray environment. We (in UK) order to BS6105 (superseded by BS EN ISO 3506). A4 is 316 austenitic - 2-3% Moly A2 is 304 stainless - no Moly

As far as I'm aware there are no published P/T ratings for ASTM B148 C95800. There is a method however of calculating P/T ratings for materials not listed in ASME B16.34 - I think the said method lives in the back of ASME B16.34.

Hi, I'm not able to select the rib on the elevation I wish to section - If I try, I exclude the whole component from being sectioned.

Hi, SW 2008 allows me to create a sectional drawing of a part and exclude any rib features from being sectioned. When I apply this to a sectional drawing of an assembly containing the part described above - SW crashes every time. On creating the section SW prompts me to choose rib...

Hi, I'm due to get a new PC next week and would appreciate some advice on re-installing SolidWorks. I have several concerns including licence transfer, saving my settings, service packs (currently running SW2008 SP3.1) etc. Any advice on how to make a smooth transition would greatly...

Hi, Since upgrading to SW2008 my PC is crashing on average twice a week. The error code on the resulting blue screen indicates that the problem lies with the ATI graphics driver. After this happened the first time I immediately updated the relevant graphics driver from the SW web site...

Thanks guys, I went down the route of tools/options/file locations, added some more folders to the list and it worked out fine.

Hi, I have a design folder containing assy, parts and drawings which has been supplied by a third party. I now need to move these files from this temporay folder to the correct directories on our server. My fear is that in transfering the files, assy links will be lost. Any suggestions...

Hi, What do people consider best practice to create a simple cylinder? I have traditionally produced this type of feature by drawing a circle and extruding it. I am now being told by a fellow solidworks user that I should be using revolves. Any comments? Graybags

Hi all, Referring to sketch j in fig UG-34, the calculated flange thickness 't' is shown from the gasket contact face to the back of the cover,however,the thickness of the flange where the bolt holes pass through appears thinner. I have calculated 't' using formula 2 for both operating...

Hi, I'm currently working on a trunnion mounted ball valve, trying to calculate the bearing sizes for the stem and trunnion. Is the bearing load on the trunnion and stem simply the max design pressure multiplied by the seat contact area plus weight of ball etc? If designing the bearings and...

Hi, My application is a bolted cover for a swing check valve. Is there a design code/empirical rule of thumb that dictates maximum bolt spacing. My calcs take into account the y and m factors, however, how can i be sure that the gasket will not leak mid way between bolts? Thanks in advance...

See spec ASME B1.20.1 for NPT info. Regards

Hi, Currently designing a trunnion mounted ball valve for use on seawater. The trunnion locates in a blind hole in the bottom of the ball and is normally sleeved with a nylon bush. Due to the fact that this valve needs to be of a "fire safe" design (client is insistent on it!), i'm looking...

Thanks for your response stanweld. This is my argument exactly for not impact testing copper alloys for -20 deg F service. However, on a recent PED audit, the notified body rep. highlighted to my collegue that the copper alloys should be tested. Is he making his own directive up? I have...