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Latest Inventions  Metallurgy A METHOD AND COMPOUND FOR BOROCHROME-PLATING OF STEEL ITEMS IN A FLUIDIZED BED
A
method and compound for borochrome-plating of steel items in a fluidized bed
A technology applied today
provides for boroning in a mixture containing boron carbide and consecutive
chrome-plating. In accordance with the newly-patented formula,
borochrome-plating is effected in a fluidized bed at temperatures of 650-1,000°
C within 10-90 minutes in a mixture, additionally containing corundum.
Chrome-plating is effected in a mixture containing chrome and corundum at
temperatures of 900-950° C within 20-90 minutes.
The compound typically used so
far for boroning steel items includes boron carbide, ammonium chloride and
corundum, in the new formula is added with sodium tetrafluoroborat. The new
mixture has the following composition, % weight:
|
boron carbide |
10-20 |
|
ammonium chloride |
0.01-0.1 |
|
sodium tetrafluoroborat |
0.02-0.05 |
|
corundum |
the balance |
According to the new method, a
mixture for chrome-plating of steel items consists of (% weight)
|
chrome |
1-10 |
|
ammonium chloride |
0.01-0.1 |
|
corundum |
the balance |
Grachev S. V., etc.
Patent number: 2157859
Publishing date: November 22, 2000
To make the order on reception of the complete information under the invention, interesting for you
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