cable news: key technology of flame retardant cable for coal mine
from：guichao author：admin click： 325 addtime：2017-04-07 12:10:00
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
(more than 0.03mm impurities can be filtered);
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
the requirement of extrusion temperature is 80 deg c, and the temperature control precision is up to 1,
screw pressure greater than 200mpa).