<xmp id="6crja"><form id="6crja"></form><ins id="6crja"><button id="6crja"><form id="6crja"></form></button></ins><form id="6crja"><button id="6crja"><button id="6crja"></button></button></form>
<xmp id="6crja"><form id="6crja"><button id="6crja"></button></form>
<button id="6crja"></button>
<button id="6crja"><form id="6crja"><ins id="6crja"></ins></form></button><ins id="6crja"></ins>
<xmp id="6crja"><xmp id="6crja"><button id="6crja"></button>
<xmp id="6crja"><form id="6crja"></form><ins id="6crja"></ins><xmp id="6crja"><xmp id="6crja"><form id="6crja"></form>
<xmp id="6crja"><form id="6crja"><form id="6crja"></form></form>
<xmp id="6crja"><form id="6crja"></form>
<form id="6crja"></form>
<xmp id="6crja"><form id="6crja"><form id="6crja"></form></form>
<button id="6crja"></button>
<xmp id="6crja"><form id="6crja"><button id="6crja"></button></form><xmp id="6crja"><form id="6crja"><form id="6crja"></form></form>
<xmp id="6crja"><form id="6crja"><button id="6crja"></button></form>
<xmp id="6crja"><form id="6crja"><button id="6crja"></button></form><ins id="6crja"></ins>

真空泵石墨轉子

描述


石墨轉子工作原理為:旋轉的轉子將吹入鋁熔體中的氮氣(或氬氣)破碎成大量的彌散氣泡,并使其分散在金屬液中。氣泡在熔體中靠氣體分壓差和表面吸附原理,吸收熔體中的氫,吸附氧化夾渣,并隨氣泡上升而被帶出熔體表面,使熔體得以凈化。由于氣泡細小彌散,與旋轉熔體均勻混合,并隨之轉動呈螺旋形緩慢上浮,與熔體接觸時間長,不會形成連續直線上升產生的氣流,從而去除鋁熔體中的有害氫,顯著提高了凈化效果。  

国产女人叫床高潮视频在线观看
<xmp id="6crja"><form id="6crja"></form><ins id="6crja"><button id="6crja"><form id="6crja"></form></button></ins><form id="6crja"><button id="6crja"><button id="6crja"></button></button></form>
<xmp id="6crja"><form id="6crja"><button id="6crja"></button></form>
<button id="6crja"></button>
<button id="6crja"><form id="6crja"><ins id="6crja"></ins></form></button><ins id="6crja"></ins>
<xmp id="6crja"><xmp id="6crja"><button id="6crja"></button>
<xmp id="6crja"><form id="6crja"></form><ins id="6crja"></ins><xmp id="6crja"><xmp id="6crja"><form id="6crja"></form>
<xmp id="6crja"><form id="6crja"><form id="6crja"></form></form>
<xmp id="6crja"><form id="6crja"></form>
<form id="6crja"></form>
<xmp id="6crja"><form id="6crja"><form id="6crja"></form></form>
<button id="6crja"></button>
<xmp id="6crja"><form id="6crja"><button id="6crja"></button></form><xmp id="6crja"><form id="6crja"><form id="6crja"></form></form>
<xmp id="6crja"><form id="6crja"><button id="6crja"></button></form>
<xmp id="6crja"><form id="6crja"><button id="6crja"></button></form><ins id="6crja"></ins>