Abstract
The joining phenomena during the friction process and the joint tensile strength of ABS resin friction welded joint were investigated. When the joint was made with a friction pressure of 0.5MPa or lower, the temperatures at the weld interface during the friction process exceeded 130 ℃. This temperature was higher than that of the glass transition temperature of ABS resin. That is, the temperature at the weld interface of the ABS resin friction welding exceeded the glass transition temperature, of which was differed with the friction welding of various metals. When the joint was made with a friction speed of 4.2s^<-1> and a friction pressure of 0.3MPa or a friction speed of 3.3s^<-1> and a friction pressure of 0.5MPa, it was obtained about 67% joint efficiency. However, the joint efficiency decreased with increasing friction time, and that also decreased with decreasing friction time. The joint efficiencies with other friction pressures were showed with similar change although the friction speed differed. In conclusion, to obtain the higher joint efficiency, the joint should be made with opportune friction speed and friction pressure.
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