| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.26 ( June 1992 ) Artificial Intelligence and Wire Rods and Steel Bars ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Development of Spot Weldable Vibration Damping Steel Sheets for Room Temperature Use Fuminori Mukaihara, Masatsugu Murase, Masazumi Izawa, Takao Kurisu, Yasunobu Uchida, Masatoshi Shinozaki |
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Synopsis : A thermosetting type of polyester resin with a three-dimensional molecular structure cross-linked by an isocyanate hardening agent having three functional groups was developed for use as a viscoelastic resin in vibration damping steel sheets for room temperature application. The vibration damping steel sheet, made by laminating two steel sheets with this new viscoelastic resin and Ni powder, has superior series-spot weldability with no defects such as sparking and ringed cut-off. Vibration damping steel sheets composed of cold-rolled steel sheet and galvanized steel sheet have wide applications with the optimum amount and hardness of Ni powder, and the optimum ratio of Ni powder average diameter to resin thickness. These newly developed vibration damping steel sheets have the same spot weldability and anti-corrosion properties as normal steel sheet for commercial use in the automobile, household electrical appliance and building material industries while providing superior vibration damping capability to satisfy the demand for greater quietness. |
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