Birchwood Technologies Manufactures Range of Metal Finishing Chemicals
Birchwood Technologies manufactures metal finishing chemicals, including the Tru Temp mid-temperature black oxide, alkaline soak cleaners, rust preventives, Presto Black room-temperature blackeners for iron and steel, antique brown and antique black patina finishes for brass, bronze, copper and other metals. The company also customizes processing equipment for metal finishing.
An alternative product for passivation...
A primer on this inexpensive and highly efficient process.
Masking is employed in most any metal finishing operation where only a specifically defined area of the surface of a part must be exposed to a process. Conversely, masking may be employed on a surface where treatment is either not required or must be avoided. This article covers the many aspects of masking for metal finishing, including applications, methods and the various types of masking employed.