Adopting the temperature sensor made by ourselves

using different specifications

the extrusionscrewtap of different structure

under different work piece materials

prefabricated bore diamater

differentspeed

and different experiment conditions that cut through liquid differently

the temperature of processingand changing rule of the internal whorl has been carried out experiment research.From reducing thetemperature of processing

optimization measures of proposing quality of the whorl and lengthening the life-span of screwtaps have been improved.