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Hello folks Firstly, thanks to everyone who takes the time out on this forums to help out. Really appreciate. Ok bit of a newbie and requesting some help on a true position calculation Attached a sample format, am very clear about the dimension Y (which would help me with delta Y) For the X...

Have never ever seen this symbol. Could someone please explain to me what it means and where I can refer more details of it Example: 1.000 ∠ 0.050 Since there is no datum given, am assuming it is not an angle on its own. Seeking someone's expertise...

thanks everyone, More than anything else right now I would be only interested in theoretically calculating speed and feed data to determine if we indeed are somewhere near those. The suppliers in India are not much useful as they tend to do more trial and error than have any justified...

Everyone, Need some advise on how to calculate the optimum cutting speed, feed and depth of cut for machining: Operation - Facing BUT "NOT single point cutting" - It is "Plunge Facing" with R5 Insert Machine - Vertical Lathe Job Specifications - variable diameters and thickness. How would...

Thanks Ed...Will try the same. btrueblood --No we always use hexane so that cannot be an issue. the process would be as below: 1. Pre-weigh filter paper 2. Pass solvent through the filter paper 3. Oven dry filter paper 4. Dry in a dessicator 5. Post Weigh Am surprised that post weights can be...

need some assistance / technical report with regards to "what causes a filter paper to lose weight"? (standard millipore filter paper of 0.8 microns). Using the same filter papers to filter aqueous based solution and measuring the pre and post weight (after drying at 100 C for 10 mins) of the...

Have a 15 HP motor whose full load current (@ 50 Hz - India norms) is calculated at around 21 Amps. Have added a VFD (Variable Frequency drive) and would like to always run the machine @ 90% of full load current for maximum efficiency. Can anyone assist in helping me calculating full load...

would it be wise to use water on steel parts? besides the operator knowledge here is not that great and we would be vary to leave them to interpret the subjective water test. Any ink tests or colour tests?

Currently using the common Copper sulphate test. Since the part used for the test has to be scrapped am looking at alternative tests. Purpose is to detect residual oil on rolled steel parts after degreasing operation (ultrasonic immersion type). Anyone with any experience or suggestions...

parts are more darker after blasting . They do not have any scale as they go through a degreasing operation before blasting. We use wheel tumblasts. Shots of steel are made from casting with .8-1% carbon and are indeed black. They are not made from SS so they wont be shiny. There is no oxide on...

we have seen a lot of rejection for "in line" rusting during our vibro finish processes. This especially becomes the case when there is a short power failure and the parts in the vibrators become extremely prone to rust...we do have power backup but we do see a lot of rejects ...any expert on...

Thanks Zinov, U mean descale my parts? i would have to go all the way to my material supplier to get it done isnt it? we get material in the form of hot rolled and cold rolled steels...arggg..guess would have to look into that option

i assume the black oxide layer is left back...any solutions for that....i mean to use my machines and run scrap to wear it out doesnt seem to good for us right now...yes the dust collection system has just been renovated and is working fine..but this issue has been there for a long time and need...

Guys, Anyone face this issue before? the parts do tend to be on the blackish side after shot blasting - shots used s110, material shot blasted = hot rolled/ cold rolled steel cages....this especially is an issue when new shots are added... need to run "dummy lots" with scrap parts to lighten...

No infact it is the other way around...water should be pushed up and polymer down(polymer is more lighter)...based on the water table though water density @ 150 C & 600 psi would be 0.91 ----almost equal to that of the polymer melt. Polymer is evenly distributed in water (agglomeration is...

I have water with polymer in it and CO2 is purged @ 600 psi + "so called mixture" is heated to 150 C and saturated for 1 hour. Water is both heat sink & transport agent - favoured for use because of cost and no chemical reactions. No i cannot lower the temp. as the polymer melts @ 150...

and pressure is in the form of CO2(carbon dioxide) @ 600 Psi - CO2 serves as the blowing agent for expansion of polymer.

pressure is 600 psi so water still remains in liquid form.

Yes there is a valve @ the bottom of the tank... No re-filling is done while draining - point is to get an instant release to subject the polymer to a high pressure differential required for expansion. This is batch production system. Polymer tends to agglomerate but we are using surfactants...

wont the archimedes screw pull up my material as well??? The issue is polymer is dispersed in water and I believe the screw will just pull everything up....I want the material to be pushed out(down) - water is secondary : If it comes out after the material = NO ISSUES...but if it sneaks out...