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Electrolyte Mixing Unit

IP.com Disclosure Number: IPCOM000087437D
Original Publication Date: 1977-Jan-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Bell, DL: AUTHOR [+3]

Abstract

It is necessary at times to prepare electrolytes for a plating operation that is performed in another building for safety reasons. Fig. 1 shows a recirculating system wherein an electrolyte mixing unit is enclosed in one section and connected to the plating cell section by double-walled umbilical lines, a cross-section of one such line being shown in Fig. 2.

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Electrolyte Mixing Unit

It is necessary at times to prepare electrolytes for a plating operation that is performed in another building for safety reasons. Fig. 1 shows a recirculating system wherein an electrolyte mixing unit is enclosed in one section and connected to the plating cell section by double-walled umbilical lines, a cross- section of one such line being shown in Fig. 2.

The electrolyte mixing unit includes a mix tank, a constant temperature circulator, a circulating and mixing pump 1, a filter, and various control valves V1 - V6. The plating cell area includes a holding tank together with a return pump 2.

The electrolyte is prepared by metering the required liquids into the mix tank via a liquid meter and control valve V1. The necessary dry chemicals are placed into the mix tank. The pump 1 is activated and control valves V3 and V4 are opened to initially mix the solution. A jet action nozzle 7 in the mix tank provides sufficient turbulence to mix the solution and to prevent any precipitation of chemicals over a period of time. The mixing tank has a double-wall jacket through which is circulated a constant temperature solution for temperature control purposes.

Cleanliness of the entire system is enhanced by a built-in cleaning cycle, which drains and flushes the entire system in preparation for mixing a new batch by activating control valve V2. After initial mixing, the solution can be recirculated through the filter by closing valve V4 and opening c...