Recovery and Refining of Precious Metals by C.W. Ammen

328 Pages $50.00

This book uses a very basic approach to introduce the subject of precious metals refining from primary and secondary sources. Working examples for recovery of clean scrap, silver from sterling silver scrap, and gold from “yellow gold” scrap are given using step-by-step procedures. The book is a practical guide to recover- ing, testing, extracting, and refining precious metals.

Zinc Plating by H. Geduld

360 Pages $100.00

This book contains 15 chapters including a history, cleaning proce- dures, equipment and plant layout, cyanide, zincate and acid baths, post-plate treatments, trouble shooting, special operations such as mechanical and strip wire continuous processing, control of solu- tions and waste treatment. It is a practical volume written for the practitioner and chemist.

Send Orders to: METAL FINISHING,

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Smart-Coat system precisely controls Ultrasonic Isopropyl Alcohol the powder coating process by moni- Cleaning System toring and automatically adjusting gun Sonicor lnstrumenf Corp. powder flow, atomizing air pressure, gun voltage, and gun trigger points based on the type and shape of the parts. The Smart series of process controls includes Smart-Coat compo- nents, Versa Screen ,486 computer, and specialized software. Other options include Air-Flow Management system controls and gun triggering/movement and booth control functions.

Circle 420 on reader information card

Copiague, N. Y

The ClJR2R2-610PX Cstage ultra- sonic isopropyl alcohol processing sys- tem features two heated ultrasonic wash chambers with 200 W/40 Khz sweep frequency with power control and two static-dip rinse chambers. The system is engineered for meticulous cleaning of a wide variety of contami- nants and utilizes a range of flammable

solvents with low flash points or aqueous cleaning chemicals. This ad- vanced cleaning system is designed to operate in a Class 1, Div. 1 hazardous environment. It is equipped with a Type X purging system for electrical enclosures and ultrasonic immersibles, explosion-proof conduit for nonpurged electrical wiring, and intrinsically safe control devices. Sonicor systems in- clude ultrasonic or agitation cleaning, rinsing, and drying with load and unload stations and automatic parts handling. The automated computer- programmable robotic transporter not only provides unattended transfer of parts through a multistage process, but also operates and monitors the various functions of the cleaning, rinsing, and drying operation. To further enhance the systems, oil removal and ultrafiltra- tion options are available to meet the needs of critical cleaning requirements and minimize waste disposal.

Circle 421 on reader information card

Aluminum Soak Cleaner Benchmark Products Inc. Indianapolis

Benchmark A-1031, a liquid soak cleaner for aluminum, has excellent performance characteristics for remov- ing oils, drawing compounds, and some buffing compounds from alumi- num substrates. A-1031 contains a combination of biodegradable surfac- tants and a mild inhibited acid, which permits the product to be used in operations where soil types vary. Be- cause of its rinsing capabilities, Bench- mark A-1031 will not cause drying stains, even on large sheets and lengthy hoist transfer operations. Silicate free, A-103 1 does not leave a residue on parts, which might adversely effect

94 METAL FINISHING . FEBRUARY 1995