It looks to me like the section is correctly cut at it's centerline as intended. I would guess that the broken out section is simply cutting the material beyond it's limit, i.e. think of doing an excessive blind extrude cut vs. a through all extrude cut. Your property manager shows no...
dhengr is spot on with this reply. If these "conceptual" answers aren't immeadiately apparent, I'd be very hesitant to trust my own ANSYS results. In reality this is rather basic algebra, just needs some manipulation to be applied to your application. No worries this isn't a gang up, instead...
We regularly spec anodized threads through our machine shop when we want to electrically isolate or protect from the ocean, and they always come back fitting fine. I simply put "(.005 OVERSIZE)" under my normal UNC-2B, depth, etc. callout. I believe they may be using a high H tap, but in...
I take it only the outer surface on the cylinder is being coated then?
I think your two options here would be a material change (out of curiosty what drove the decision of S355 instead of 316L?) or else trust your zincs to do their jobs as the components will be electrically linked. A cursory...
Afternoon all,
Looking for some insight. I’m making some revs to this old part, but I can’t find where the previous designers racked it for anodizing. Is it common for a plater to have the appropriate hardware (oversized stud?) to use one of the STI helicoil tapped holes to rack the part? This...
Hi Smokes,
Is the Ti being used for corrosion resistance or because of loading requirements? If the contact point isn't under any high load, I find thin walled nylon 6/6 or equivalent plastic bearings solve the problem outright by isolating dissimilar metals from each other. Even if your...
Hi Bob,
I take it the aluminum pads are not designed yet. I would open up the mounting holes by one standard increment before anodizing, then simply use a plastic isolation shoulder washer at the connect points. This way you can use your SS or galvanized hardware with no risk of galvanic...
I heard back from the Loctite representative and he confirmed that there were no extraneous issues involved with corrosion. I'm going to use the medium strength (blue) primer-less 243 for this application. Thanks to Mike and Mint for your replies and hopefully the thread will help someone else...
Thanks for the reply Mike, I did put an e-mail out to there customer service but no answer as of yet. I'm take your wording as saying any Loctite product won't make a difference beyond what the general conditions would dictate? I threw my question up on here on the chance that someone may say...
Hi all,
I am having some trouble with 316SS 10-24 FH screws backing out of their 316SS housing during system deployment. Looking to implement some sort of thread locking, but unsure of Loctite's performance in an open marine environment, and also if it arises any corrosion concerns (he housing...
According to my other engineers in the building, CPVC exhibits this higher ductility in the form of higher compressibility without fracture, which would be disastrous in an underwater environment.
Didn't take the time to do a research search to my standards, but for these purposes, it would...
Hello All,
A new rev of a product is using a 3" Schedule 80 CPVC pipe as a pressure tube and solid stock for 2 endcaps, instead our the typical anodized/painted aluminum. The product is for a long term (1-3 year) deployment in ocean water at depths up to 200m. From a sellers perspective, this...
Hi All,
Always had great help in these forums, so here's another topic I hope can help someone else too.
We are experimenting with abandoning the traditional hard assembly drawings (exploded view, fastener lines, etc.) and replacing them with an eDrawings file to be displayed on the assemblers...
Here's another image zoomed out. Maybe it better shows how the "hump" could be considered significant enough to be at least addressed. http://files.engineering.com/getfile.aspx?folder=8bf558bd-2a5a-4705-a0d1-842e0df23e54&file=Assembly2.JPG
First off, thank you all so much for your prompt replies.
I've attached a JPEG of the hook as it appears in the assembly.
I made my first post rather hastily, and I see how it came across a little misleading. I can't find how to turn off the scaling in SW, but the image was indeed scaled is...
Hello all,
I've inherited a project designed by a previous engineer (which we all love!) and am taking a second look at it, attempting to streamline some geometry. I've attached some images of a clevis hook used to gain a mechanical advantage by use of its lever arm. The hole shown is for a...
Am I incorrect in feeling a marine grade adhesive (epoxy? polymer based?) would keep this in place since it's not experincing a true shear load? I am indeed looking at thermosets, preferably one with a higher hardness than the glass filled nylon covering on the pin. Any cradling could compromise...
The current idea would be have them machined, then apply the adhesive (not settled upon yet) on our assembly floor. Somebody brought up that machining could restrict our material choices since certain glass filled polymers like G10 experience water retention problems once the external seal is...
Ahh Sabic is the manufacturer of "Ultem" brand PEI. I was under the impression it was a regional polymer supplier.
One other thought. I can't imagine I need more than a 0.1" thick inert (low load version) to accomplish what I'm looking to do. Perhaps someone could point me towards an...
Excellent Pat, thank you. I was leaning towards Ultem since I can't get over this hang up that the acetal will begin to cradle the glass filled nylon after being under load for 6 months. I will see what I can dig up with regards to abrasion and creep resistance of these materials, these are...
