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  • Users: cmwatson78
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  1. cmwatson78

    removing oil from metal plates

    What is the best way of removing FUCS oil from plates that have just been through a fine blanking process? My company is starting this process and we are needing to know the best way to remove the oil from the plates. Is there a need for an alkiline wash? Or can we just fine blast the plates...
  2. cmwatson78

    pro's and cons of pc-dmis vs camio studio

    what are the differences between pc-dmis and camio studio. can someone also tell me which is recommended? We are looking into camio and we need to see if it is worth the investment.
  3. cmwatson78

    concnetration

    How can i find the acutal amount of mg/L after i titrate? I know how much NaOH I am suppose to add to get the correct titration. But how do I find mg/L? I have a tank with water. I am adding phoshpate and I test the concnetration with a hand titrator. I use a indicator. I get an amount of NaOH...
  4. cmwatson78

    I need to test for rust

    Is there a company that checks metal parts? I need to test for rust. We are having trouble determining if our parts are rusting or just over phosphating(too much iron phophate). So my boss wants to send some parts off and see if someone can tell me which one it is. Thanks
  5. cmwatson78

    Phosphate color change

    I am still over phosphating parts. I cant give too much detail but I can give this much. My pre-rinse is at a pH of 5.93 and a temp of 47C my pre-phosphate is at a pH of 5.23 and a temp of 49.3C my phosphate is at a pH of 5.13 and temp of 50.7 my cold rinse is at a pH of 5.76 and a temp of 51.5C...
  6. cmwatson78

    Significant Figures applied to GD&T

    Thank you so much for your replys, it has really helped me. Im new at all this forum stuff so Im sorry if I keep asking questions wrong. The reason for the question of significant figures was because, I was asked was to find out what the term was for when you divide two numbers with different...
  7. cmwatson78

    significant figures

    Should you apply the law of significant figures to GD&T?
  8. cmwatson78

    significant figures

    Should significant figures apply to GD&T? What do you do when dividing decimals with different decimal places.
  9. cmwatson78

    Bromocresol Green

    I need to know how much of a difference there is between Bromocresol Green .1% and Bromocresol Green .2%. How much does it matter. I know it indicates a differnce of .2 in pH, but does that really matter? I am titrating phosphate with sulfuric acid using Bromocresol Green as the indictor. And I...
  10. cmwatson78

    n10 sulfuric acid

    Is n10 sulfuric acid the same as .1N? I need to order n10 sulfuric acid and all I can find in the book is 10N or 10%. thanks
  11. cmwatson78

    free acid test

    Why would someone do a free acid test on phoshate? What is a free acid test? What happens in the reacion and what web site can I go to, so I can get more info on determination of free acid using a sulfuric acid titration.
  12. cmwatson78

    Over Phosphating Metal Parts

    We are phosphating metal parts to apply an ahesive and primer. I cant give to much info. Is the pH of the phosphate an issue? We are ok with the concentration, but we are thinking its the metal of the parts. can that be the case? The tops of the parts are fine, but the bottoms are being over...
  13. cmwatson78

    im over phosphating parts

    how do you keep from over phosphating?
  14. cmwatson78

    Phosphate

    How am i over PHOSPHATING my metal?

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