UVEX代理銷售UVEX代理銷售PVC高頻塑料熱合機(jī)熱合焊接塑料塑膠是否需要加溫加熱，我們主要談一下塑料熱合機(jī)熱合焊接塑料塑膠制品的范圍，以及我們?cè)谑褂脽岷蠙C(jī)加工塑料制品在什么情況下需要加熱、加溫。PVC高頻塑料熱合機(jī)，又名，塑料熱合機(jī)，高頻熱合機(jī)，PVC熱合機(jī)，就是我們所說的高周波、高頻機(jī)，所以其塑料焊接熱合原理依然是我們所說的高頻工作原理。即通過高頻能量滲透塑膠塑料材料分子內(nèi)部，同化材料分子，使其自身發(fā)熱，達(dá)到熔接焊接的目的，而且熱合焊接的牢固度與材料本身的牢固度相當(dāng)，甚至更加牢固。

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UVEX代理銷售UVEX

 
UVEX代理銷售UVEX代理銷售
UVEX代理銷售UVEX代理銷售
UVEX代理銷售UVEX代理銷售

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UVEX代理銷售UVEX代理銷售
UVEX代理銷售UVEX代理銷售II變頻水泵相似工況分析水泵變頻運(yùn)行時(shí)，其相似工況點(diǎn)應(yīng)滿足以下關(guān)系：因此得其相似工況曲線方程為：而這恰好與管網(wǎng)綜合阻力系數(shù)為S的管網(wǎng)阻力特征曲線相重合。即：在管網(wǎng)阻力系數(shù)S不變時(shí)，水泵變頻時(shí)不同頻率的運(yùn)行工況點(diǎn)互為相似相似工況點(diǎn)。但是在末端定壓差控制系統(tǒng)中，系統(tǒng)的阻力系數(shù)S是變化的，因此我們也不能簡(jiǎn)單的認(rèn)為水泵變頻后的工況點(diǎn)與設(shè)計(jì)工況點(diǎn)為相似工況點(diǎn)。如圖4所示分別單臺(tái)水泵在轉(zhuǎn)速為時(shí)的流量一揚(yáng)程性能曲38線，即為水泵轉(zhuǎn)速為時(shí)的效率曲線。