http://www.finishingtalk.com/community/topic313$2.html The most recent posts in Susan. Fri, 11 May 2007 14:15:13 +0000 PunBB http://www.finishingtalk.com/community/post684.html#p684 I am glad to see the problem was fixed. A freeze out unit will definitely help, as long as you are using sodium cyanide instead of potassium cyanide. Potassium Carbonates will not freeze out since it is much more soluble than sodium carbonates. info@finishingtalk.com (Labrat) Fri, 11 May 2007 14:15:13 +0000 http://www.finishingtalk.com/community/post684.html#p684 http://www.finishingtalk.com/community/post683.html#p683 Thank you Very much for your reply. We have found the main culprate last night. Instead of the ususal round rods that we use in the baskets, we used flat bars which got stuck and did not fill the baskets to the bottom. When we fixed that, the amps went up immediately. Our Rochelle Salts are also low, we are waiting for some from the supplier. And our filtration system cannot handle the high carbonates any more. This will be fixed over time as we have built in a freezing unit which will start to work by tomorrow. We have also added some filters. The time is shorter, though not at optimum yet. But I believe we will get there. Thank you once again. Susan info@finishingtalk.com (susan) Thu, 10 May 2007 06:34:50 +0000 http://www.finishingtalk.com/community/post683.html#p683 http://www.finishingtalk.com/community/post681.html#p681 Check concentration of Rochelle Salts. Should be 4-6 ounces per gallon. This helps corrode the anodes to prevent a passive film from coating the surface of the anodes. Also make sure pH is within parameters. Check all electrical connections (busbar connections, rack connections, any copper to copper connection)for oxide building. This will insulate the connection, causing resistance in the flow of electricity. Check for possible electrical grounds (steam coil touching anode, anode touching dropped parts in bottom of tank, busbar touching any metal structure, etc). If rack application, check rack tips and strip or sand if necessary. info@finishingtalk.com (Labrat) Wed, 09 May 2007 21:20:03 +0000 http://www.finishingtalk.com/community/post681.html#p681 http://www.finishingtalk.com/community/post679.html#p679 Somebody, please help! We are struggling with slow plating. Our analysis tells us that (cyanide copper plating) the copper is good, the cyanide is high and the carbonates are high. (we have diluted the tanks, the carbonates are on levels where we did not have these problems before). However, our amps on the rectifiers refuse to go up and the plating remains very slow. Anybody with suggestions? info@finishingtalk.com (susan) Tue, 08 May 2007 19:22:45 +0000 http://www.finishingtalk.com/community/post679.html#p679