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The performance of injection molding machine’s control system, such as reproducibility, repeatability, etc, is widely studied nowadays. Since screw stroke, injection cylinder body pressure and barrel temperature are the most important terms of injection unit, interval linearity and repeatability to each parameter are analyzed here. Barrel temperature is analyzed according to the repeatability of the thermocouple at 150℃, 210℃, 300℃using a precise oven. The result temperature is within ±0.5℃ Through the reliability evaluation of the most important terms of injection unit, the method of evaluating the linearity and repeatability is proposed and verified. Key Words : Injection molding machine(), Injection temperature(), Reproducibility(), Uncertainty() 1.   1946  James Watson Hendry         . 1970         .         .                .  ,          .        .                .        , ,       .

Measurement Uncertainty Estimation of Injection Temperature in Injection Molding Machine