I am looking for a reference on allowable strain on a tie bar and allowable variation between all four bars. I would not think it could be more than a couple .001" but is there a reference. I looked in my machine manual and strain gauge sites, no help. The machine is a nissei 360.
possible sources of rust on stainless steel components?
Wear.
Gassing from material or poor vents.
electolosis from poor gronding?? for real?
Am i missing somthing. we are having a rust problem and we cant use any sprays beacuse of medical/FDA.
Hello Stainless Guru's
I am an injection molder in the medical industry. We are having a rust problem on some of our 420&440 SS molds. I am trying to identify the source of the rust. the molds are cooled with 70F water and the plastic melt temps are around 400F-460F.The material is...
Hello all,
I am looking for a replacement material to use for cavity blocking in injection molding. I currently use a metal product similar to dental amalgum. I have been looking at master bond and devcon but have not found anything. The new material would have to thick enough not to run and...
hello all,
I am interested in a table or data for the chemical resistance of mica. The mica will be used as a filler in a polypropylene part in 40% concentration. any links or tips would be greatly appreciated.
thank you for you time
hello everyone,
I have been searching for some time but can't seem to find what i need.
basically i would like to use some type of cross-head extrusion die to caot .180-.220 steel rods to an final OD of .375. I have found some products that i believe are made with this process but they are...
hello everyone,
First i would like to apolozize for my ignorance, i am a plastics guy. At my company we etch .062 alluminum sheet on one side. Removing material from one side causes the sheet to bow and roll.
I was wondering what would happen if i clamped the sheet flat and annealed it. I...
i have two parts the first is for simplicictys sake a CPVC bar and the second is a teflon 3/4 in rod. The bar has notches machines and the rod has a hole drilled through its length. The bar and the rod come out of the machine op with around a 1/32 bow. Some co-workers have suggested annealing...
what steel or other material (ceramic??) can be used for 10-20% HF with 5% nitric?
i am currently using inconel but with recent price hikes a material change is required.
For this aplication i cannot go plastic, i need strength for a 50 in 3/8 rod.
Anyone out there had sucess with PP hotmelts? Whats the skinny? Do the have temperature and chemical resistance?
Are they expensive? Do the beat hand welding?
Basically i make Polypro(hand weld) and PVC(glue) boxes out of 1/4 and 1/2 sheet. What takes me a week in PVC takes 1.5-2 in PP, i...
Hello i recently began working at a company that makes aluminum molds in house to make a large arrangement of parts for use in our machine. Material include PVC, 25% glass filled PE, 30% glass filled, PP, PVDF and a few others.
A lot of the molds run thick parts up to 1/2 with little or no...
Hello All,
I am looking for injection moldable LDPE with the lowest possible durometer. So far i have located a 41D but i would like lower. Let me know what you think or even if you know some big PE suppliers to check out.
Thanks
MJH
I am currently machining UHMW sheet into bushings at a high cost. I make the same bushings out of PVDF, PP , PE in a injection mold. I have recently heard of a injection moldable UHMW from Ticona (GUR 5113 & hostaloy). Does anyone know anything about quality/processing of these materials?
