CYNO COPPER PLATING PROCESS – 1150 

It is a general purpose cyanide copper plating process  developed for industrial & domestic use, as it produces dull, smooth & finegrained copper deposits with excellent throwing power.

Cyno  is  recommended  for resisting case  hardening  to  preventcarburisation  and  for bearings to prevent  creep  in  aluminium Housings.  

This  process can be used as   an under coat to nickel  &  chrome plating  of steel, aluminium & zinc base diecastings. Buffing  of the deposit is essential to get good brightness.cyno  is  sutitable for barrel or rack process and  or  light  or heavy deposits.  

Make up quantity & working condition 

Light deposits  or   barrel   plating         heavy deposits

Cyno copper salt 1150      75 gm/lit.       125 gm/lit.

Temperature                    room               55*

Cathode c.d.                   1-1.5 a/sq.dm   3-4 a/sq.dm

Anode c.d.                      1-2 a/dm2        3-4 b/dm2

                                      2                     2

Voltage vat                      2-3 volts           3-4 volts

Barrel                             6-10 volts          6-10 volts

Agitation                         not necessary    preferred

Filteration                        occasionally      occasionally

Copper as metal               10 gm/lit.          18 gm/lit.

Free sodium cyanide         6-8 gm/lit.              14-18 gm/lit.  

Equipment :

A  plain welded steel tank is suitable, rubber or  plastic  lined tank is prefered as it avoids stray current etc. M.s. steam  pipe for heating is satisfactory. 

Anodes  rolled  oval  type copper anodes of  highest  putity  are recommended. 

Solution preperation :  

Fill  the  clean tank half the volume with soft  water.  Add  th calculated  quantity and stir it vigorously to dissolve it.  Heat the solution to working temparature and operate the bath.