DEVICE AND METHOD FOR PREPROCESSING METALLIC MAGNESIUM

• Main Authors: ZHANG XINDI, WU TSUNGYUAN, ZOU QINGHUA
• Format: Patent
• Language: English
• Published: 03.09.2015
• Subjects: BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; HEATING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; KILNS; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; OPEN SINTERING OR LIKE APPARATUS; OVENS; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; RETORTS; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

The present invention provides a device and a method for preprocessing metallic magnesium. The device includes a chamber (20), a heating device (22) mounted in the chamber (20), a gas inlet port (24) mounted on the chamber (20), and a gas evacuation port (26) mounted on the chamber (20). The gas inlet port (24) is connected to and in communication with an external inert gas supply equipment for supplying an inert gas into the chamber (20). The gas evacuation port (26) is connected to and in communication with an external vacuum evacuation device to evacuate the chamber (20) to vacuum. The heating device (22) functions to heat metallic magnesium having an oxidized surface so as to sublimate a layer of magnesium oxide formed on the surface of the metallic magnesium in a vacuum environment to thereby obtain pure metallic magnesium. The present invention can remove magnesium oxide from surfaces of particles of metallic magnesium, reduce the content of magnesium oxide, allowing it possible to handle an extremely minor amount of magnesium oxide in a coating chamber so as to prevent the coating chamber from being contaminated by a large amount of magnesium oxide and thus greatly reduce the chance of defect products resulting from magnesium oxide.