What is Black Oxided finishing for Precision CNC Machining Parts
Precision CNC machining parts made from stainless steel and steel can specify black oxide as a surface finish treatment to provide additional protection for the component parts.Black oxide is a common chemical surface finishafter oxide, there will be a layer of oxide film on the metal product surface, in order to isolate the air, to achieve thepurpose of rust.
What is Black Oxide?
The black oxide process is a chemical conversion coating. This means that the black oxide is not deposited on the surface of the substrate like nickel or zinc electroplating. Instead, the black oxide coating is produced by a chemical reaction between the iron on the surface of the ferrous metal and the oxidizing salts present in the black oxide solution. These oxidizing salts include penetrates, catalysts, activators and proprietary additives which all take part in the chemical reaction. The result of this chemical reaction is the formation of black iron oxide, magnetite (Fe3O4), on the surface of the metal being coated. Black oxide has a range of unique properties and benefits that can be applied to a variety of industries.
What is the advantages for Black Oxide?
1.Black Oxide process can be applied in cold, room temperature or hot processing methods, and may require pre-treatment of the components, depending on the component requirements.
2.Another advantage of black oxide is that the process only creates an extremely thin layer of magnetite to create the moisture barrier. Typical thickness is 5-10 millionths of an inch (.000005” – .000010”). This means that the process does not affect the dimensional stability of the part.
3.Another advantage is that no metal is removed or deposited from the component surface during processing. And unlike painting or plating surface treatments, black oxide will not chip or flake.
How to make the black Oxide?
Clamping Workpiece → Oil Removal → Washing → Pickling → Washing → Oxide → Washing → Saponification → Boiling and Washing → inspection.
Are you ready to make your CNC Machining Parts with Black oxide with Worthy Hardware ?
Worthy Hardware clients in a wide variety of industries specify black oxide for a number of their precision machining parts and components, including: Appliance/White Goods, Automotive, Firearms, Military/Dept of Defense, Aerospace, Oilfield/Energy Distribution, Hardware/Fastener, Equipment Manufacturers and Medical.We work with a variety of qualified partners to complete the black oxide treatment of precision machining parts and components in our facility.
For any questions about black oxide and the use of the finish on your next precision CNC machining and CNC milling and CNC turning parts or project, please contact our team at [email protected]
Worthy Hardware is a CNC manufacturing and sheet metal fabrication company,including CNC machining services,CNC milling services, CNC turning services, laser cutting services and stamping services.Call us +86-76989919645 or email us [email protected] for more discounts for your projects.