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Device for detecting, during welding, variation in the physical state of the plastic material in a coupling piece of joining pipes
Device for detecting, during welding, variation in the physical state of the plastic material in a coupling piece of joining pipes
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机译:用于在焊接期间检测连接管的连接件中的塑料材料的物理状态变化的装置
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摘要
The invention concerns a device for detecting variations in the physical state of the plastic material in a coupling piece used for welding pipes and incorporating a heating resistor, cavities which the softened material can enter and sensors for detecting the state of the material within the cavities. According to the invention, in order to obtain a weld of high quality, it is necessary for the distance between the bottom of the cavities and the part of the resistor nearest this bottom on the one hand, and for the linear dimension in the cross-section of these same cavities near their bottom on the other, to be less than or equal to the thickness of the material which is softened during the heating of the pieces. The invention applies to the control of the welding of sections of piping, particularly for the gas industry.
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