Application Development of Al-Si Coated Material to Direct Resistance Heating in the Steel Tube Air Forming Process (Second Report)

Masashi Kawakami･Ryohei Ikeda･Kimihiro Nogiwa･Norieda Ueno･Hiroyuki Kan･Hiroyuki Kumeno (Sumitomo Heavy Industries)

STAF (Steel Tube Air Forming) is a hot blow forming process for steel tubes which can form car body frames with high strength and continuously varied cross sections in length. In the first report, we reported on the avoidance of hot-dip coating bias of Al-Si coated steel pipes heated by resistance heating. We report the results of optimizing the heating process and evaluating the plating quality.

Establishing Technology to Enhance Stability of Press Production of Titanium Fuel Tanks for Motorcycles

Motoaki Takashima･Satoshi Akiniwa･Yuta Shimada (Honda Motor)

Our titanium fuel tanks for motorcycles have higher requirements in terms of shape, airtightness, and appearance quality than general titanium stamped parts. This has resulted in a narrow control range of manufacturing conditions. Therefore, in order to improve the stability of production, we clarified the appropriate material properties and the optimum conditions for lubrication and forming for the titanium fuel tank. As a result, the degree of freedom in the design and shape of the product has also been increased.

A Study on Bonding Force of Laser-Patterned Metals and Thermoplastic Composite using Automated Fiber Placement

Junyeong Jeong･Youn Il Jung (Hyundai Motor)･Haengseon Choi (SECO)･Changkyoo Park (Seoul National University of Science and Technology)･Maruo Kaznobu (GLOBAL POLYACETAL)･Yasunari Kuratani (KADO)･Jeongseok Kang (Korea Carbon Industry Promotion Agency)

To achieve a weight reduction goal in automotive industry, applications of reinforced plastic with glass or carbon fiber composites to a car body has been actively considered due to its lightweight compared to structural metals such as steels and aluminium alloys. However, high materials price and low productivity of the fiber-reinforced plastic (FRP) composite limit its applications in the car body. Therefore, we studied hybrid technologies of laser texturing of metal surface and bonding technology using automated fiber placement (AFP) that can locally apply FRP composite to existing steel or aluminium car body parts

Mechanism Elucidation of Appearance Defects in Interior Resin Part by “Simulation Coupling Fluid Analysis and Thermal Elastoplastic Structural Analysis”

Akihide Nakata･Tatsumi Onishi･Lihao Shu (Kasai Kogyo)

In automotive interior resin parts, the appearance defects are chronic problems. Conventional approach has been made mainly by focusing on resin flow and behavior after demolding, but unresolved problems still remains　. This research focus on the solidification behavior inside mold after resin filled and analyze the behavior by “simulation coupling fluid analysis and thermal elastoplastic structural analysis”. As a result, the white defects occurred in actual parts are reproduced on the co-simulation and elucidate the mechanism.

Spiral Cutter for Motor Housing to Promote EV
-DX for Tool Development Contributing to Carbon Neutrality and Its Application-

Shosei Goto (Kyocera)

Currently, the EV shift is accelerating in the auto industry. In this paper, the process in the development of cutting tools for the processing of motor housings specific to EVs is summarized by introducing design examples using DX, and the development toward carbon neutrality, which has recently become a social issue by contributing to the improvement of productivity.