The Development of a Functional Improvement Technology on Steel with Solid Nitriding by utilizing Waste Plastics
| Project/Area Number |
15560085
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Chubu University |
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Principal Investigator |
KAGAYA Chuji Chubu University, College of Engineering, Professor, 工学部, 教授 (90097668)
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| Project Period (FY) |
2003 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2005: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2004: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2003: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Keywords | Surface Creation / Solid Nitriding / Thermosetting waste Plastic / Recycling / Ferrous Materials / Wear Resistance / Fatigue Resistance / Corrosion Resistance / Surface Modification / Waste Plastic / Punch and Cutter / Life Extension / Waste plastic / Waste Plastics |
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| Research Abstract |
1.In a normal nitriding process at temperature of 565℃, the nitrogen component of the waste melamine resin powder was found to be approximately 30 percent larger than that of the raw material powder of melamine resin, and the decomposition point was also higher by 57℃.
2.In the process for 1 to 3 hour at a temperature of 565℃ with the waste melamine, a compound layer was formed on the surface of the SUS 304 steel plate and diffusion layer was formed underneath the compound layer. Irrespective of the processing conditions, however, the thickness of the compound layer was found to be less than that of the diffusion layer.
3.On the surface of the SUS 304 steel plate, CrN or Fe_3C was identified to read a high hardness of at least 1000HV. In element analysis in the depth direction from the surface, nitrogen and carbon elements were found to be high density in the compound layer and its degree was remarkable in the nitrogen.
4.With the SUS 304 steel oil lubricated, its seizure resistance and wear resistance characteristics were drastically improved by waste melamine nitriding.
5.The fatigue strength of the SUS 304 steel nitrided with waste melamine was improved by approximately 1.5 times than the non-treated material.
6.Nitriding with waste melamine is available at low temperature treatment and a diffusion layer alone can be produced in the case of treatment at 420℃.
7.Punches and roll cutters treated with the waste melamine nitriding process indicated at least twice as much service life as the case of quenched and tempered materials.
8.Waste melamine resin has high nitriding performance to nitride the steel easily regardless of the type, and can be recycled effectively as resources for the solid nitriding.
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Report
(4 results)
Research Products
(10 results)
