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9538816 Bending collapses behaviour of exturded aluminum beams
JSAE Review 17 (1996) 83-99
Abstracts of technical papers presented at the 1995 JSAE Autumn Convention The following are the abstracts of technical papers which were presented at the 1995 JSAE Autumn Convention held in September, 1995. The original texts were written only in Japanese. Paper number, title, names of authors and their affiliations are shown before each abstract in that order.
9538762 Analytical Setting of The TIG-Remelt Method for The Surface of Camshafts Shinji Kurachi (Toyota Motor Corporation) In the heat hardening treatment for the surface of a cam by TIG (Tungsten Inert Gas) remelting method, the range of the remelting condition is very narrow to achieve its required quality. In this report, we show the relation between the qualities and the control parameters of the machine by function development, and distinguish these parameters by the statistical method. We also conno the quantity of heat input, to arrive at the algorithm realizing the desirable hardening.
9538771 Corrosion Resistance of Electra-Deposition Coated Welds by Gas Shielded Metal Arc Welding - The 1st Report: Investigation of Corrosion Mechanism of Electra-Deposition Coated Weld Part Michiyasu Takahashi, Masato Uchihara, Akito Sakoda (Sumitomo Metal Industries), Mitsuhiko Ueki, Fumiaki Niizato (Honda R&D Co., Ltd. Tochigi R&D Center) Gas shielded metal arc welding is generally applied for automobile chassis parts. However, it is thought that corrosion resistance of the electro-deposition = ED) coated weld part is poor. Therefore, corrosion mechanism and cause were investigated. Corrosion resistance of the ED coated weld part was inferior to that of ED coated substrate because of (1) inferior phosphating and (2) defects of ED coating. After more detailed investigation, the effective cause was found to be (2), defwts of ED coating, formed by slag on the surface of the welding bead.
9538780 Effect of Cu-Ag-0 Electrode on Resistance Spot Welding of Aluminum Alloy Sheets Masaki Kumagai, Hiromichi Sano (Sumitomo Light Metal Industries, Ltd.) The objective of this work is to evaluate Cu-0.1% Ag-O.Ol%O alloy electrode which has high conductivity and optimum heat resistance for resistance spot welding of AI-Mg and AI-Si-Mg alloy sheets. This electrode show above 5 times longer welding life for lubricant coated Al-Mg alloy sheets using a single phase AC welding machine than that of Cu-l%Cr alloy electrode. Erosion, which was caused by melting of Cu-Al eutectic formed by diffusion of copper into aIuminum picked-up on the tip, was controlled because of the high conductivity of Cu-Ag-0 electrode. Welding life was greatly improved by acid cleaning of the aluminum alloy sheets. Using a DC welding machine, the positive polarity electrode was severely damaged by excess heating from the Peltier effect.
9538799 Development of Roll-Forming Technology With Gradual Cross-Sectional Change Norio Nishikawa, Tadahiko Kohama, Mitsuhiro Ozawa, Katsuyoshi Horino (Aisin, Seiki Co., Ltd) 0389-4304/96/$15.00 0 1996 Society of Automotive SSDDI0389-4304(95)00059-3
Engineers
As a process that enables the high-speed and continuous forming of lengthy materials with a constant cross-sectional configuration, roll fonning offers much higher productivity than the stamping process. However, in case a change must be made to the shape of the cross section, the material must normally be joined with a stamped part containing the separate shapes. This affects productivity, increases the number of pieces, and degrades the material’s appearance. This report describes the roll-forming technology that we developed, in which the cross section of the material can be changed gradually.
9538807 Investigation for Evaluation of Windability of Magnet Wires Hiromitsu Asai, Naruhiko Inayoshi (Nippondenso Co., Ltd.), Isao Ueoka, Hiroki Matsuura (Sumitomo Electric Industries, Ltd.) Recently, many kinds of automatic winding machines are being used in the manufacturing of motors and many kinds of coils. When the winding speed increases, the number of layer shorts of the coils also increases. Therefore, magnetic wires having good windability are required. So, we are trying to evaluate the windability by new methods which simulate the equipment for winding machines. In this paper, investigation for evaluation of windability of magnet wires is discussed.
9538816 Bending Collapses Behaviour of Exturded Aluminum beams Xiaug Wan, Masayuki Takahashi, Hironori Suzuki (Kant0 Auto Works, Ltd.) The bending deformation behaviour of extruded aluminum and hybrid beams has been studied theoretically and experimentalIy. Very good agreement was found between the theoretical results for extruded square section tubes with some partitions. The Partition parallel to the direction of load restrains me elastic buckling and contributes to the energy absorption. For seam bending energy absorption, the hybrid beams indicated significant reduction in weight compared with traditional reinforced thin-walled steel beams.
9538825 Ananalysis of Fatigue Mechanism of Weld-Bonded Steel Joints Yusuke Umetani, Osamu Kito, Yoshimi Miyazaki (Toyota Motor Corporation) Weld-Bonding (WBI means the method of using structural adhesive with spot-welding for automotive body panel joints etc. WB gives greater rigidity and durability of joints compared with spot-welding. For further use of WB, it is necessary to study fatigue reliability of WB. In this study, fatigue mechanism of WB was observed by analyzing the transition of static strength of a WB joint through its fatigue life and calculating stress distribution at the WB joint with FEM. Ideas for improving adhesive to prolong fatigue life of WB were also suggested.
of Japan, Inc. and Elsevier Science B.V. All rights reserved
Abstracts of technical papers presented at the 1995 JSAE Autumn Convention The following are the abstracts of technical papers which were presented at the 1995 JSAE Autumn Convention held in September, 1995. The original texts were written only in Japanese. Paper number, title, names of authors and their affiliations are shown before each abstract in that order.
9538762 Analytical Setting of The TIG-Remelt Method for The Surface of Camshafts Shinji Kurachi (Toyota Motor Corporation) In the heat hardening treatment for the surface of a cam by TIG (Tungsten Inert Gas) remelting method, the range of the remelting condition is very narrow to achieve its required quality. In this report, we show the relation between the qualities and the control parameters of the machine by function development, and distinguish these parameters by the statistical method. We also conno the quantity of heat input, to arrive at the algorithm realizing the desirable hardening.
9538771 Corrosion Resistance of Electra-Deposition Coated Welds by Gas Shielded Metal Arc Welding - The 1st Report: Investigation of Corrosion Mechanism of Electra-Deposition Coated Weld Part Michiyasu Takahashi, Masato Uchihara, Akito Sakoda (Sumitomo Metal Industries), Mitsuhiko Ueki, Fumiaki Niizato (Honda R&D Co., Ltd. Tochigi R&D Center) Gas shielded metal arc welding is generally applied for automobile chassis parts. However, it is thought that corrosion resistance of the electro-deposition = ED) coated weld part is poor. Therefore, corrosion mechanism and cause were investigated. Corrosion resistance of the ED coated weld part was inferior to that of ED coated substrate because of (1) inferior phosphating and (2) defects of ED coating. After more detailed investigation, the effective cause was found to be (2), defwts of ED coating, formed by slag on the surface of the welding bead.
9538780 Effect of Cu-Ag-0 Electrode on Resistance Spot Welding of Aluminum Alloy Sheets Masaki Kumagai, Hiromichi Sano (Sumitomo Light Metal Industries, Ltd.) The objective of this work is to evaluate Cu-0.1% Ag-O.Ol%O alloy electrode which has high conductivity and optimum heat resistance for resistance spot welding of AI-Mg and AI-Si-Mg alloy sheets. This electrode show above 5 times longer welding life for lubricant coated Al-Mg alloy sheets using a single phase AC welding machine than that of Cu-l%Cr alloy electrode. Erosion, which was caused by melting of Cu-Al eutectic formed by diffusion of copper into aIuminum picked-up on the tip, was controlled because of the high conductivity of Cu-Ag-0 electrode. Welding life was greatly improved by acid cleaning of the aluminum alloy sheets. Using a DC welding machine, the positive polarity electrode was severely damaged by excess heating from the Peltier effect.
9538799 Development of Roll-Forming Technology With Gradual Cross-Sectional Change Norio Nishikawa, Tadahiko Kohama, Mitsuhiro Ozawa, Katsuyoshi Horino (Aisin, Seiki Co., Ltd) 0389-4304/96/$15.00 0 1996 Society of Automotive SSDDI0389-4304(95)00059-3
Engineers
As a process that enables the high-speed and continuous forming of lengthy materials with a constant cross-sectional configuration, roll fonning offers much higher productivity than the stamping process. However, in case a change must be made to the shape of the cross section, the material must normally be joined with a stamped part containing the separate shapes. This affects productivity, increases the number of pieces, and degrades the material’s appearance. This report describes the roll-forming technology that we developed, in which the cross section of the material can be changed gradually.
9538807 Investigation for Evaluation of Windability of Magnet Wires Hiromitsu Asai, Naruhiko Inayoshi (Nippondenso Co., Ltd.), Isao Ueoka, Hiroki Matsuura (Sumitomo Electric Industries, Ltd.) Recently, many kinds of automatic winding machines are being used in the manufacturing of motors and many kinds of coils. When the winding speed increases, the number of layer shorts of the coils also increases. Therefore, magnetic wires having good windability are required. So, we are trying to evaluate the windability by new methods which simulate the equipment for winding machines. In this paper, investigation for evaluation of windability of magnet wires is discussed.
9538816 Bending Collapses Behaviour of Exturded Aluminum beams Xiaug Wan, Masayuki Takahashi, Hironori Suzuki (Kant0 Auto Works, Ltd.) The bending deformation behaviour of extruded aluminum and hybrid beams has been studied theoretically and experimentalIy. Very good agreement was found between the theoretical results for extruded square section tubes with some partitions. The Partition parallel to the direction of load restrains me elastic buckling and contributes to the energy absorption. For seam bending energy absorption, the hybrid beams indicated significant reduction in weight compared with traditional reinforced thin-walled steel beams.
9538825 Ananalysis of Fatigue Mechanism of Weld-Bonded Steel Joints Yusuke Umetani, Osamu Kito, Yoshimi Miyazaki (Toyota Motor Corporation) Weld-Bonding (WBI means the method of using structural adhesive with spot-welding for automotive body panel joints etc. WB gives greater rigidity and durability of joints compared with spot-welding. For further use of WB, it is necessary to study fatigue reliability of WB. In this study, fatigue mechanism of WB was observed by analyzing the transition of static strength of a WB joint through its fatigue life and calculating stress distribution at the WB joint with FEM. Ideas for improving adhesive to prolong fatigue life of WB were also suggested.
of Japan, Inc. and Elsevier Science B.V. All rights reserved