1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER...
-
Upload
ambrose-gilmore -
Category
Documents
-
view
212 -
download
0
Transcript of 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER...
![Page 1: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/1.jpg)
1/13
EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF
COATED DIES WITH DIFFERENT GEOMETRIES
AFTER HOT AND COLD EXTRUSION OF ALUMINUM
BSc in Mechanical Engineering
PROJECT TITLE:
Submitted by: GEORGE GEORGIOU
Supervisor: Dr.-Eng. Antonios Lontos
NICOSIA, 12/09/2014
![Page 2: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/2.jpg)
2/13
1. INTRODUCTION
2. HOT EXTRUSION EXPERIMENTAL PROCEDURE
3. COLD EXTRUSION EXPERIMENTAL PROCEDURE
4. CONCLUSIONS
TABLE OF CONTENTS
![Page 3: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/3.jpg)
3/13
1. INTRODUCTION
Coating Material Hardness (HV pl)
Aluspeed 3200
Supernitride (SN) 2600
DLC 2500
![Page 4: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/4.jpg)
4/13
Extrusion equipment - Pressing Load Measurement
![Page 5: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/5.jpg)
5/13
Aluminum billets (AA6061)
![Page 6: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/6.jpg)
6/13
Hot extrusion – aluminum product roughness
2. HOT EXTRUSION EXPERIMENTAL PROCEDURE
![Page 7: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/7.jpg)
7/13Cold extrusion tests
Billets for cold
extrusion
Billets for hot
extrusion
3. COLD EXTRUSION EXPERIMENTAL PROCEDURE
![Page 8: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/8.jpg)
8/13Pressing load and mandrel movement
![Page 9: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/9.jpg)
9/13
Dies and products after cold extrusion
![Page 10: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/10.jpg)
10/13
Experimental results after cold extrusion
![Page 11: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/11.jpg)
11/13
• Dies with no coating demonstrate earlier and worst damage. The critical area that was damaged is the circumference of the hole.
• For the same case the uncoated die with 8o extrusion angle appear better performance and better quality roughness of the extruded aluminum.
• The best behavior from all the applied coating types was demonstrated from the aluspeed coating.
• The coated dies with the supernitride and DLC coatings, in the beginning of the experiments appear to have a good behavior. After a number of tests both coatings were slightly detached from the inside area oh the hole. Probably the geometry of the dies prevents the good coating adhesion with the material of the dies.
4. CONCLUSIONS
![Page 12: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/12.jpg)
12/13
• New and more suitable coatings will be investigated on extrusion dies.
• Further simulations and research for most promising die geometry.
• Large scale of extrusion tests with various coated dies and new geometries.
• The simulating and experimental work will expand to other processes such as forging, drawing, casting, punching and polymer processing.
FUTURE WORK
![Page 13: 1/13 EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF COATED DIES WITH DIFFERENT GEOMETRIES AFTER HOT AND COLD EXTRUSION OF ALUMINUM BSc in Mechanical.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697c0121a28abf838ccbf70/html5/thumbnails/13.jpg)
13/13
Thank You
for your attention