What are the three kinds of molds for mining control cables?

One. What are the three kinds of molds for mining control cable? Mining control cable is mainly composed of cast iron terminal box body, insulating porcelain casing, cap and hood type wire clamp, sealing lead and grounding lead wire, cable. Applicable to AC rated voltage u0/u for 450/750V and below control and monitoring circuits and protection lines and power distribution devices in the electrical instrumentation connection line. Mining control cable production in the use of molds (including die core and die sets) there are three main forms: extrusion, extrusion tube type, half extrusion type (or half extrusion tube type). Extruded mold: mining control cable is to achieve product molding by pressure, so extrusion molding products dense. The angle difference between the die core and the die set decides the size of the pressure later, affecting the quality of the rubber layer and the amount of extrusion; the size of the die core and the die set decides the geometry of the extruded product and the surface quality. Extruded mold selection size requirements are very strict, high cost, low extrusion, so in addition to the requirements of dense insulation structure and extrusion tensile ratio of small, most of the extruded tube instead of extruded.

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