COMPUTER numerical control (CNC) has arrived for black oxide finishing using the patented TRU TEMP low temperature, non-polluting finishing process.
This new CNC line utilises an integrated programmable hoist and tank line to automatically process iron and steel components with a high quality black oxide finish.
Designed to operate as a self-controlled unit that eliminates the labour costs required with manual hoist lines, this CNC system is highly repeatable, eliminates process guesswork, and has large output capabilities.
The system can be sized and configured to accommodate any volume of work or production circumstances.
Hoist and superstructure has a 500 pounds load capacity and operates by Allen Bradley PLC digital control with a manual joystick backup.
Process tanks are extrusion welded, 3/4 inch polypropylene with gusset supports under the top rim and perimeter girthing.
Tanks have setdown saddles for automatically centreing part loads accurately. Tanks can be laid out in two ways; with pickup and drop-off points at opposite ends of the line or with a single load/unload station with the hoist pickup and drop-off at the same point.
The process program can handle up to three loads concurrently, for a maximum throughput of five loads an hour.
The TRU TEMP finish produces a satin black magnetite coating just 0.5 microns thick (20 millionths) with no effect on part dimension or material hardness.
The finish withstands 100-200 hours of neutral salt spray (ASTM B 117) or several hundred hours of humidity (ASTMD1748), (verified by independent testing).
The high level of corrosion protection is important for both part storage and shipment in corrosive atmospheres including ocean shipment.
For more information contact:
Birchwood Casey
www.birchwoodcasey.com