Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd – 8 th 2014; Prof.C.Y.Wang, GDUT Tool Wear in Ti-6Al-4V Alloy Turning under Oils on Water Cooling Comparing with Cryogenic Air mixed with Minimal Quantity Lubrication Prof. Chengyong Wang Institute of Manufacturing Technology (IMT)Guangdong University of Technology, China International conference on sustainable manufacturing (ICSM) Advanced Manufacturing Technology Center AMTC, Tongji University October 23 –October 24, 2014
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Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd– 8th 2014; Prof.C.Y.Wang, GDUT
Tool Wear in Ti-6Al-4V Alloy Turning under Oils on Water Cooling Comparing with Cryogenic Air mixed with Minimal Quantity Lubrication
Prof. Chengyong Wang
Institute of Manufacturing Technology
(IMT)Guangdong University of Technology,
China
International conference on sustainable manufacturing (ICSM)
Advanced Manufacturing Technology Center AMTC, Tongji University
October 23 –October 24, 2014
Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd– 8th 2014; Prof.C.Y.Wang, GDUT
GDUT
Guangdong University of Technology, GDUT
Guangdzhou
Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd– 8th 2014; Prof.C.Y.Wang, GDUT
Guangdong University of Technology, GDUT
Established in 1958
Total full-time students: 47,000
Undergraduate students:43,000
Postgraduate students: 4000;
Faculty: 19
Employers: 3100
Professors: 300
Associate Professors:700;
Campus: 4
73 bachelor programs
100 master and doctoral programs
73% Engineering
R&D Fund: 3.5 Billion RMB;
Budge: 15 Billion RMB
Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd– 8th 2014; Prof.C.Y.Wang, GDUT
4
Guangdong University of Technology, GDUT
Total full-time students: 4143
Undergraduate students: 3223
Postgraduate students: 822;
Employers: 153
Professors: 47
Associate Professors:49;
Professors: 10
Associate Professors:12;
Postgraduate students: 822;
Research field:
High speed machining, polishing and
lapping
Cutting tool (PVD/CVD coated / Ceramic/
Diamond)
Micro machining and Laser machining;
Machine tool design and automation
Medical surgery tool and biomechanical
design;
Low carbon manufacturing technology;
Research field:
Material processing
technology
Machine tool and automation
Robotics,Logistic and CIMEs
Design theory and methods
Automobile manufacturing
Industrial management
Director:
Prof.C.Y.Wang
International Conference on Sustainable Manufacturing, October 23th–24th, 2014; Prof.C.Y.Wang,GDUT
Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd– 8th 2014; Prof.C.Y.Wang, GDUT
Guangdong University of Technology, GDUT
Professors: 5
Associate Professors:3;
Postgraduate students:80;
Postdoctors: 10
Advanced Cutting Tool and Ceramic Center
Research field:
High speed machining; polishing and lapping of crystal materials;
PVD/CVD/Ceramic Cutting tools;
Medical surgery tools and biomechanical design;
Low carbon manufacturing technology (using of new energy, MQL.. ). 2 μm 2 μm
International Conference on Sustainable Manufacturing, October 23th–24th, 2014; Prof.C.Y.Wang,GDUT
Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd– 8th 2014; Prof.C.Y.Wang, GDUT
In EOoW, water and cryogenic air, and oils play roles in heat
transfer and lubricating respectively. In IOoW, water is used for heat
transfer and oils are used for lubricating. Cryogenic air and oils play
roles in heat transfer and lubricating respectively in CAMQL.
The media of IOoW can spray deeply into the cutting zone, making
more oils penetrate to the cutting zone. Meanwhile, with a small
amount of water, oils in the form of oils on water would bond to the
surface of cutting tool and workpiece, then penetrate deeply into the
cutting zone and form the oil film.
Conclusions
International Conference on Sustainable Manufacturing, October 23th–24th, 2014; Prof.C.Y.Wang,GDUT
Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd– 8th 2014; Prof.C.Y.Wang, GDUT
The chip of EOoWf is much shorter than EOoWr for single spaying
direction of air from down to up making the chip much easier to
break. EOoWf has the lowest surface roughness, while EOoWrf has
the slowest flank wear rate. The bareness area of cutting tool
substrate-zone A is only absent from EOoWrf due to a better
lubricating effect. Lubricants have no inflence on surface roughness
and flank wear rate in EOoW.
Chip morphology of IOoW with different amounts of water is
continuous spiral. IOoW with less water will be better in lowering
surface roughness and reducing flank wear rate. The chip bulk and
bareness area of cutting tool substrate are absent when less water
is adopted due to better lubrication. Lubricants have a significant
effect in IOoW.
Conclusions
International Conference on Sustainable Manufacturing, October 23th–24th, 2014; Prof.C.Y.Wang,GDUT
Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd– 8th 2014; Prof.C.Y.Wang, GDUT
CAMQL with different air temperatures have the similar chip morphology with wet cutting. The surface roughness of CAMQL(-16℃) was slightly lower compared to CAMQL(-26℃), and they had almost the same flank wear rate. CAMQL has the lower surface roughness and slower flank wear rate compared to wet and dry cutting. CAMQL with -16℃ and -26℃ both have bareness area of cutting tool substrate due to insufficient lubrication.
The flank wear rates of cutting tools with different coating films have
the same sequence under EOoW, IOoW and CAMQL cooling, indicating that it is need to select suitable coated cutting tool in order to gain the best cutting performance under these cooling methods in turing Ti-6Al-4V.
Among EOoW, IOoW and CAMQL cooling, IOoW with lower quantity
of water has the best performance in lowering surface roughness and reducing flank wear in turning Ti-6Al-4V process.
Conclusions
International Conference on Sustainable Manufacturing, October 23th–24th, 2014; Prof.C.Y.Wang,GDUT
Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd– 8th 2014; Prof.C.Y.Wang, GDUT
Future Works
Internal cooling tunnel to avoid the transfer the heat much faster;
Nozzle structure design – forming much better oil mist, oil on water mist ;
Botanic or ester oil;
Mixed methods of coolant - cooled air/ oil mist (MQL)/ OoW for different material machining
Optimization of machining parameters for different material and machining method.
The project is funded by:
Guangdong-NSFC Jointed Major Project (U1201245)
International Conference on Sustainable Manufacturing, October 23th–24th, 2014; Prof.C.Y.Wang,GDUT
Sino-German Center on Sustainable Manufacturing 2014, Germany, August 3rd– 8th 2014; Prof.C.Y.Wang, GDUT
谢谢
International Conference on Sustainable Manufacturing, October 23th–24th, 2014; Prof.C.Y.Wang,GDUT