cable news: key technology of flame retardant cable for coal mine
from：guichao author：admin click： 422 addtime：2017-04-06 10:23:34
there are seven key requirements for the technical requirements of flame retardant cable for coal mine.
first, the use of ultra clean insulation material, and has a corresponding impurity detection device;
two, the use of high efficiency filter device of the three layer co extrusion equipment (filter can be greater than 0.03mm impurities);
three, with the conductor preheating device (to increase production and change the thermal mechanical stress);
four, the use of ultra smooth inside and outside semiconductive shielding material;
five, there are super net material automatic feeding device (eliminate environmental pollution);
six, with pre twisted cage winch and winch disc;
seven, high temperature control precision and screw pressure extruder (low extrusion temperature of 80 degrees c),
the temperature control precision is as high as 1 deg c, the screw pressure is greater than 200mpa.