Electroplating slot size and average loading capacity, cathodic current density, volume current density, and so the relationship between;
Generally speaking, the plating slot size means plating slot electrolyte volume L, say again effective volume, namely electroplating slot cavity length X internal cavity width X electrolyte depth;
General but according to electroplating manufactured or existing dc plating equipment conditions to calculate matching;
Choose appropriate electroplating slot size to prepare production plan, estimation capacity and ensure electroplating quality have very important sense;
Determine the plating slot size three note:
1. Meet processing parts size requirement;
2. Prevent electrolyte happen overheating;
3. Can maintain electroplating production cycle electrolyte components certain stability;
Yin and Yang, extremely current density according to actual immersed electrolyte, all the area to calculate the current efficiency because of Yin and Yang very different, and a slightly different;
DA = I always/S Yin (A/dm2)
DA = I always/S Yang (A/dm2)
Average loading capacity d: electroplating parts needed per unit area of electrolytic liquid product
Namely d = V/S (L/dm2)
Volume current density DV:
The unit volume through which the current strength namely: DV = I always/V (A/L)
Electroplating process important appropriate control volume current density, because the current through the electrolyte solution resistance are born hot because, killing electrolytic temperature, and electrolyte warming and height screw with volume are directly related to the current density. To prevent the electrolyte warming too fast, there must be a more volume to reduce the electrolyte volume current density;
Such as acid bright craft: appropriate copper the volume of the current density of 0.3-0.4 A/L, namely when the total current as 1000A, should match 2500-3000L electrolyte;
Experience data:
The following data of various common of plating for the cathodic current density and average load some experience related data:
Plating kind of cathodic current density range DK, A/dm2 average loading capacity d, L/dm2
Sulfate plating copper 1.0-3.0 7-9
Acidic tin 1.0-3.0 7-9
Bright nickel 2.0-4.0 6-8
The nickel 1.0-1.5 6-8
Generally speaking, the plating slot size means plating slot electrolyte volume L, say again effective volume, namely electroplating slot cavity length X internal cavity width X electrolyte depth;
General but according to electroplating manufactured or existing dc plating equipment conditions to calculate matching;
Choose appropriate electroplating slot size to prepare production plan, estimation capacity and ensure electroplating quality have very important sense;
Determine the plating slot size three note:
1. Meet processing parts size requirement;
2. Prevent electrolyte happen overheating;
3. Can maintain electroplating production cycle electrolyte components certain stability;
Yin and Yang, extremely current density according to actual immersed electrolyte, all the area to calculate the current efficiency because of Yin and Yang very different, and a slightly different;
DA = I always/S Yin (A/dm2)
DA = I always/S Yang (A/dm2)
Average loading capacity d: electroplating parts needed per unit area of electrolytic liquid product
Namely d = V/S (L/dm2)
Volume current density DV:
The unit volume through which the current strength namely: DV = I always/V (A/L)
Electroplating process important appropriate control volume current density, because the current through the electrolyte solution resistance are born hot because, killing electrolytic temperature, and electrolyte warming and height screw with volume are directly related to the current density. To prevent the electrolyte warming too fast, there must be a more volume to reduce the electrolyte volume current density;
Such as acid bright craft: appropriate copper the volume of the current density of 0.3-0.4 A/L, namely when the total current as 1000A, should match 2500-3000L electrolyte;
Experience data:
The following data of various common of plating for the cathodic current density and average load some experience related data:
Plating kind of cathodic current density range DK, A/dm2 average loading capacity d, L/dm2
Sulfate plating copper 1.0-3.0 7-9
Acidic tin 1.0-3.0 7-9
Bright nickel 2.0-4.0 6-8
The nickel 1.0-1.5 6-8