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The Development Of New Materials And The Behavior Of Corrosion-abrasion Of The Liner Of Wet-grinding Machine In Metallurgical Industry

Posted on:2004-09-12Degree:MasterType:Thesis
Country:ChinaCandidate:S Y LuFull Text:PDF
GTID:2121360092492817Subject:Materials science
Abstract/Summary:PDF Full Text Request
The costs associated with wear processes place a significant burden upon many sectors of industry and the community. Several studies have indicated that the abrasion and corrosion in the coal and mineral processing industries are areas for research priority owing to their significant impact on metal wastage and maintenance costs. It was against this background that the present study was initiated, which had as its aim an evaluation of the methods currently used in the mining and mineral processing industries for determining the wear performance of plant and equipment components.In this study, the resistance to high impact, corrosion and abrasive wear was determined for low carbon high alloy steel, and for comparison, the high manganese steel and the medium carbon alloy steel are also tested. The test was carried out using a modified MLD-10 tester. The test methodology very well simulates the working condition of metallurgical industry. And four mediums were used for comparison.We discussed the behavior of corrosion-abrasion of the liner of wet-grinding machine in simulated metallurgical conditions. The results show that under the simulated slurry, the corrosion rate and the wear loss of the low carbon high alloy steel is better than the high manganese steel and the medium carbon alloy steel. And with the increased test time, the superiority of the low carbon high alloy steel was well illuminated. The worn surfaces of the three steels show that the mechanism of the low carbon high alloy steel is impact abrasion, the high manganese steel is impact-corrosion, and the medium carbon alloy steel is the heaviest impact-corrosion. Under the quartzite slurry, the low carbon high alloy steel is better than the other two steels at 2 hours, but at 8 hours, the manganese steel has a lower wear loss. We think that in quartzite slurry, the impact abrasion plays an important role. The manganese steel has a excellent ductility, so the wear loss of the manganese is lower.
Keywords/Search Tags:impact corrosion and abrasion, wear loss, worn surface
PDF Full Text Request
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