Thank you for that beutiful, informative series. I am sorry if that sounds a bit dumb question but I am trying to understand the fundemental. As far as I understand from those video you are removing the free Fe atoms on the surface. Now the surface has little openings on the oxide layer where below those little openings the alloy metal. Those place became opened becaue you removed some (non oxide-just Fe atomor other things). Please sorry for my English, I am not a native and I am trying to exaggerating some to emphasize better. Now my question is: Are you closing that opening with chromium oxide layer in your bath or it is closed individually immediately after you pull it from the bath. (Natural passivation). I hope I'm not rude to ask your know how.
@@hypertool35In my experience as an engineer in Pharma, no. I generally view it as a finishing process to reduce Ra, achieve a desirable aesthetic or clean welded features after some level of manual polishing.
Speeds up the reaction time, and I've found also decreases the resistance between the electrodes. As a result of this, the material removal rate is increased, and oftentimes the quality of the polish will increase (best to find a balance as well as cost-benefit). EP also doesn't work very well with the standard solutions at RT. I use a salt solution for my polishing as it helps me keep the temperature down significantly with sensitive parts.
The temperature of the electrolyte solution does what the other commentor stated, but I thought I'd emphasize that it can really effect the surface finish and the uniformity of the finish greatly. If you turn off the tank heaters before you go home at night, try electropolishing a panel in an ambient temperature solution and I think you'll see what I mean. I suspect that you already know all this since your questions are quite old now. Good luck.
Thank you for that beutiful, informative series. I am sorry if that sounds a bit dumb question but I am trying to understand the fundemental. As far as I understand from those video you are removing the free Fe atoms on the surface. Now the surface has little openings on the oxide layer where below those little openings the alloy metal. Those place became opened becaue you removed some (non oxide-just Fe atomor other things). Please sorry for my English, I am not a native and I am trying to exaggerating some to emphasize better. Now my question is: Are you closing that opening with chromium oxide layer in your bath or it is closed individually immediately after you pull it from the bath. (Natural passivation). I hope I'm not rude to ask your know how.
Could I use electropolishing on 3d sintered printed stainless steel parts? I'm looking for a matte pink finish for a wrist watch case. -Frank
does it help remove deep scratches ?
no, it doesnt. its a failed technology that companies insist you to buy.
😂😂
@@alishera.2540 what's so funny
@@hypertool35In my experience as an engineer in Pharma, no. I generally view it as a finishing process to reduce Ra, achieve a desirable aesthetic or clean welded features after some level of manual polishing.
@@Haydn-x2v thanks for your valuable comment, I also knew that but in any case wanted to raise this question here if any new development is present.
What is the function of the heater?
Speeds up the reaction time, and I've found also decreases the resistance between the electrodes. As a result of this, the material removal rate is increased, and oftentimes the quality of the polish will increase (best to find a balance as well as cost-benefit). EP also doesn't work very well with the standard solutions at RT. I use a salt solution for my polishing as it helps me keep the temperature down significantly with sensitive parts.
heats it up
The temperature of the electrolyte solution does what the other commentor stated, but I thought I'd emphasize that it can really effect the surface finish and the uniformity of the finish greatly. If you turn off the tank heaters before you go home at night, try electropolishing a panel in an ambient temperature solution and I think you'll see what I mean. I suspect that you already know all this since your questions are quite old now. Good luck.
Did you just say positive and negative current?