B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 9/04 (2006.01) B22F 1/00 (2006.01) B22F 9/08 (2006.01) C21D 9/00 (2006.01) C22C 38/36 (2006.01)
Patent
CA 2397953
The invention relates to a process for producing a corrosion-resistant blasting agent ( > 60 HRC) with sharp edges based on an Fe-Cr-C alloy. A granulate consisting of an iron-chromium-carbon alloy is hardened in said process to > 60 HRC by subjecting it to a heat treatment at above 900° Celsius under a reducing atmosphere. An oxide-free, hard material is obtained in this way that can be crushed into grains with sharp edges. The result is a blasting agent with excellent properties for the surface treatment of workpieces consisting of corrosion-resistant materials such as, for example stainless steel, nonferrous metals and natural stone.
La présente invention concerne un procédé permettant de réaliser un agent de grenaillage (>60HRC) anguleux inoxydable à base d'un alliage Fe-Cr-C. Un granulat constitué d'un alliage fer-chrome-carbone est pour cela trempé à >60 HRC en le soumettant à un traitement thermique à une température supérieure à 900 DEG C sous atmosphère réduite. Il se forme ainsi un matériau dur inoxydable qui peut être réduit à l'état de grains anguleux. Il en résulte un agent de grenaillage ayant d'excellentes propriétés liées au traitement de surface de pièces à usiner en de matériau inoxydable, tel que l'acier inoxydable, le métal non ferreux, la pierre naturelle.
Saenger Reinhard
Zyto Oliver
Mcfadden Fincham
Vulkan Strahltechnik Gmbh
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