| Project/Area Number |
16360359
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Material processing/treatments
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
MOHRI Naotake The University of Tokyo, School of Engineering, Department of Precision Engineering, Professor, 大学院・工学系研究科, 教授 (90126186)
|
|---|
| Project Period (FY) |
2004 – 2005
|
| Project Status |
Completed (Fiscal Year 2005)
|
| Budget Amount *help |
¥15,000,000 (Direct Cost: ¥15,000,000)
Fiscal Year 2005: ¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 2004: ¥9,100,000 (Direct Cost: ¥9,100,000)
|
|---|
| Keywords | SEM / Wire EDM / Specimen Preparation / WEDG / Elemental Analysis / 3-D materials distribution / 走査型電子顕微鏡 |
|---|
| Research Abstract |
In this research, we developed a multi functional wire feeding device for combined machining of electrical discharge machining (EDM) and surface abrasive machining. By using a feeding wire as a tool, a sample for SEM observation can be shaped by EDM under small reaction force and can be finished by abrasive machining on the same machine. Machining accuracy is guaranteed since the work-piece is not removed from the initial stage. This machine equips a movable wire guide in the center of two pulleys which enables wire abrasive machining. By using the wire guide, surface abrasive machining can be performed without wire vibration. The wire guide for wire abrasive machining withdraws in the process of wire EDM and it is used to set the cut of depth when the abrasive machining is in process. The influence of the electrode wear can be disregarded because a new wire is always supplied, thus accuracy can be guaranteed. After five sides machining to the materials being observed was carried out by wire EDM, abrasive machining was used to remove the electrical discharge craters formed on the surface.
Repetitive surfacing leads to 3 dimensional observation of materials distribution of a specimen by energy dispersion X-ray spectrometry (EDS). We applied abrasive surface machining to tungsten-copper (W-Cu) and cast iron. We discuss the feasibility of 3-D materials distribution by SEM through the repetitive grinding process.
|
