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\r大馬力密煉機(jī) 75升密煉機(jī)  液壓式密煉機(jī)工作時(shí)，兩轉(zhuǎn)子相對回轉(zhuǎn)，將來自加料口的物料夾住帶入輥縫受到轉(zhuǎn)子的擠壓和剪切，穿過輥縫后碰到下頂拴尖棱被分成兩部分，分別沿前后室壁與轉(zhuǎn)子之間縫隙再回到輥隙上方。在繞轉(zhuǎn)子流動的一周中，物料處處受到剪切和摩擦作用，使膠料的溫度急劇上升，粘度降低，增加了橡膠在配合劑表面的濕潤性，使橡膠與配合劑表面充分接觸。配合劑團(tuán)塊隨膠料一起通過轉(zhuǎn)子與轉(zhuǎn)子間隙、轉(zhuǎn)子與上、下頂拴、密煉室內(nèi)壁的間隙，受到剪切而破碎，被拉伸變形的橡膠包圍，穩(wěn)定在破碎狀態(tài)。同時(shí)，轉(zhuǎn)子上的凸棱使膠料沿轉(zhuǎn)子的軸向運(yùn)動，起到攪拌混合作用，使配合劑在膠料中混合均勻。配合劑如此反復(fù)剪切破碎，膠料反復(fù)產(chǎn)生變形和恢復(fù)變形，轉(zhuǎn)子凸棱的不斷攪拌，使配合劑在膠料中分散均勻，并達(dá)到一定的分散度。由于密煉機(jī)混煉時(shí)膠料受到的剪切作用比開煉機(jī)大得多，煉膠溫度高，使得密煉機(jī)煉膠的效率大大高于開煉機(jī)。\r<\/p>\r
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