ize the slurry, the process further comprising maintaining an air to slurry mass ratio of generally at least 0.05.

ABRASIVE ARTICLE U.S. Patent 5,827,337. Oct. 27, 1998 E.B. Keil, assignor to Norton Co., Worcester, Mass.

An uncured, molded abrasive ar- ticle comprising a granular abra- sive mater ia l uniformly coated with at least one phenol-novolac resin; an effective amount of at least one curing agent; and an amount of water effective to bind the abrasive article prior to cur- ing; wherein the abrasive article comprises less t h a n 0.5%, by weight, volatile organic chemi- cals.

RECYCLING OF CLEANING SOLUTION U.S. Patent 5,827,374. Oct. 27, 1998 P.G. Mansur, assignor to Mansur Industries Inc., Miami

A process for recycling cleaning solution in an industr ia l wash- ing appara tus comprising pro- viding a wash basin including an at least part ial ly surround- ing wall s t ructure and a floor having a drain means there in for draining the solution from the wash basin; and providing a disti l lation chamber s t ructured and d i sposed to rece ive the cha rge of c l e a n i n g so lu t ion therein.

SPUTIrERING DEVICE U.S. Patent 5,827,408. Oct. 27, 1998 I. Raaijmakers, assignor to Applied Materials Inc., Santa Clara, Calif.

A method and apparatus for im- proving the conformality of sput- ter deposited films.

ELECTROLYTIC TREATMENT OF P L A T l l S N A p E D WORKPIECES U.S. Patent 5,827,410. Oct. 27, 1998 D. Hosten, assignor to Siemens S.A., Bruxelles, Belgium

An apparatus for the electrolytic t r ea tmen t of plate-shaped work- pieces par t icular ly printed cir- cuit boards, comprising contact- ing and conveying means tha t are adapted for anodically or ca- thodically contacting the work- pieces through at least one treat- ment bath; a t r ea tmen t cell for the acceptance of the t r ea tmen t bath; vertical slots in the end walls of the t r ea tment cell for the passage of the workpieces; a col- lecting t ank for the bath liquid

WEC310 Series Electrode-less Dual Input

Conductivity Controller

W A L C H E M Sensors, Pumps, Controls

DUAL INPUT TOROIDAL CONDUCTIVITY CONTROL

Save Money, Save Space, Save Time

Great for alkaline cleaner & electrocleaner or multiple rinse tanks

Microprocessor based. Takes control of your clean- ers, chromates, phosphates, pickling baths and rinse tanks

Non-contacting sensor resists foul- ing, provides longer unattended ser- vice, especia//y for oi/y solutions

Single or dual input; one unit moni- tors 2 baths with control output & alarm for each

Electrode-less sensor design measures accurately over a wide dynamic range in applications from 50 pS/cm to 1000 mS/cm

Provides excellent chemical compatibility and withstands high temperature solutions

Pre-wired, wall mount NEMA 4X enclosure for simple, plug-in installation & reduced cost

Five Boynton Road Holliston, MA 01746 USA tel 508-429-1110 Fax 508-429-7433 www.walchem.com

Circle 103 on reader information card

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Circle 035 on reader information card

March 1999 101

emerging from the t r ea tmen t cell with at least one pump for the continuous re turn of ba th liquid from the collecting t ank into the t r ea tmen t cell; character ized by means for re turning bath liquid into the t r ea tmen t cell at both s ides of the c o n v e y i n g p a t h within an at least largely verti- cal flow direction; and by guide devices ar ranged at both sides of the conveying path in the treat- ment cell.

A P P A R A T U S FOR ELECTROLYTIC TREATMENT U.S. Patent 5,827,411. Oct. 27, 1998 J.I. Bishara et al., assignors to Eltech Systems Corp., Chardo~, Ohio

An electroplating, anodizing, or e tch ing a p p a r a t u s compr i s ing means defining an electrolytic

cell including an anode chamber and an anode therein; a cathode chamber and a cathode therein; an i o n - p e r m e a b l e d i a p h r a g m separa tor be tween the cathode chamber and the anode chamber comprising a fibrous mat; means for c i r cu la t ing r inse so lu t ion from a rinse t ank through the c a t h o d e c h a m b e r p r o d u c i n g catholyte/rinse; means for circu- lating the bath of an electroplat- ing, anod iz ing , or e t ch cell through the anode chamber pro- duc ing an a n o l y t e / b a t h , sa id ano ly te /ba th conta in ing meta l cations; means ibr impressing a cur ren t across the anode and cathode causing the migration of acid anions from the catholyte/ r inse to the anolyte/bath; and the migration of metal cations from the a n o l y t e / b a t h to the

catholyte/rinse, with there being precipitat ion of the metal cations as m e t a l h y d r o x i d e s in the catholyte rinse.

SPUTTERING TARGET U.S. Patent 5,827,414. Oct. 27, 1998 J.D. Westwood, assignor to IBM Corp., Armonk, N.Y.

A single-piece slotted ferromag- netic sputtering target and sput- tering apparatus.

ELECTROCOATING PROCESS U.S. Patent 5,827,416. Oct. 27, 1998 S.M. Brown et al., MiIlbury, Mass.

A process for control of elec- t rodeposi t ion utilizing cathodic and anodic flushable electrodes such that the pH and electrocon- ductivity of the solution is con- trolled by removing excess anions

HE EST

SMD SERIES MAGNETIC PUMP PRIMES 13 FEET IN UNDER MINIflES! Innovative internal design reduces priming times NOT just a standard pump with an addect volume tank Dry run capabilily with patented pinpoint thrust bearing system Sealless design eliminates mechanical seal problems

. Reduce maintenance costs and downtime

For information on SMD or any of our non-metallic, sealless, magnetic drive pumps, call or write:

IWAKI W A L C H E M C o r p o r a t i o n 5 Boynton Road, Holliston, MA 01746, USA Tel: 508-429-1440, Fax: 508-429-1386, or visit or web site at:

Circle 102 on reader information card

* c o n s i s t e n t p l a t i n g q u a l i t y , r e d u c i n g r e j e c t s .

* c o n s i s t e n t barrel e f f i c i e n c y , incre - a s i n g p r o d u c t i o n .

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" ~ , ~ ~Z~"; 4" x 6" model is available for evaluation upon firm purchase order.

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~ 4 ~ Rosedale NY 718-481-8741 Fax 718-481-9859 See us on ~¢ [ntcnlct http://www.Edi.ne@letewor~

Circle 051 on reader information card

102 Metal Finishing