HK UPPERBOND INDUSTRIAL LIMITED
HK UPPERBOND INDUSTRIAL LIMITED
Add to Cart
Magnetite Processed Counter Block Of Molins Cigarette Filter Engaging Machine Mk8 Max 3
Blackened Rolling Block is a casting part of filter assembly machine, placed next to the rolling drum, functioning together to roll the tipping paper and connect the filter and the cigarette.
Hot Black Oxide
Hot baths of sodium hydroxide, nitrates, and nitrites at 141 °C (286 °F) are used to convert the surface of the material into magnetite (Fe3O4). Water must be periodically added to the bath, with proper controls to prevent a steam explosion.
Features:
Hot Black Oxide
Cold Black Oxide
Mid-Temperature Black Oxide
Ferrous Materials
Magnetite processed
conversion coating
copper selenium compound
Surface strengthened
Hardened
Rust-proof
Antirust
Corrosion Resistance
Corrosion proof
Hard and tough
High performance
Brand new
Long functional life
Reliable
High temperature tolerance
High fracture strength
Stainless
High receiving accuracy
Copper-made
Black coating
Ferrous Materials
A standard black oxide is magnetite (Fe3O4), which is more mechanically stable on the surface and provides better corrosion protection than red oxide (rust) Fe2O3. Modern industrial approaches to forming black oxide include the hot and mid-temperature processes described below. The oxide can also be formed by an electrolytic process in anodizing. Traditional methods are described in the article on bluing.
Low temperature oxide, also described below, is not a conversion coating—the low-temperature process does not oxidize the iron, but deposits a copper selenium compound.
