>>Exactly what do you hope to achieve in your fine process? I hope to achieve void free castings. Pic 602 and 603 show problem area around stator. 623-625 turned out somewhat ok, but molds pushed apart.
>>What issues are you having that make you want to change your process? We are building a pump with cast in place stator. I am still in the prototype stage, just trying to get the process to be repeatable. The stator tends to have residual voids that pop out later. The silicon molds tend to flex or come apart at the wrong times. I have done some experimentation with different injection sites, with mixed success. See pictures here for good overview of parts and problems. http://aercon.net/Public/pumppix/index.php Blue resin is IE-3075, grey rc-82d. >>What brand and number is your silicone and casting resin? Best results with Innovative Polymers RC-82D, also used IE-3075. I am using a dp-400 with 1:1 400ml cartridges and 3/8 static mix tubes. On Fri, Sep 27, 2013 at 1:42 PM, Bill Kenny <bill...@gmail.com> wrote: > I have made tons of molds and castings, ... literately. > > Aluminum isn't a good choice especially with complicated parts. It doesn't > flex to release the molds. Typically with aluminum, it's automated and it > pushes the parts out with pins. > > Exactly what do you hope to achieve in your fine process? > What issues are you having that make you want to change your process? > What brand and number is your silicone and casting resin? > > Bill > > > > > On Fri, Sep 27, 2013 at 8:27 AM, Erik Friesen <e...@aercon.net> wrote: > > > Has anyone here done much polyurethane resin pouring? I have been trying > > to fine tune the process. Current process uses silicon moulds. > > > > #1. Does it work to use aluminum moulds? > > > > #2. Could it work to use high vacuum to eliminate air bubbles? I would > > envision using some type of fill funnel and a pulling a full vacuum, then > > opening the entrance to the funnel with some type of rod/oring seal. > > > > The current material I am using sets in about 10 minutes, the gel time is > > around 50 seconds, so its all static mixed. > > > > > ------------------------------------------------------------------------------ > > October Webinars: Code for Performance > > Free Intel webinars can help you accelerate application performance. > > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most > > from > > the latest Intel processors and coprocessors. See abstracts and register > > > > > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > -- > > > Thanks > Bill > > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most > from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
