Cable extrusion test run technology

Abstract

The invention discloses a cable extrusion test run technology. The technology comprises the steps that (1) a mold core and a mold sleeve are selected according to the cable extrusion thickness, a wedge-shaped ruler is inserted into the gap between the mold core and the mold sleeve for measurement after the mold core and the mold sleeve are installed, and meanwhile the coaxiality of the mold core and the mold sleeve are precisely adjusted; (2) technology traction and extension are achieved for the cable extrusion technology, concretely, optimal technological parameters are set for the cable type, cable materials and indoor temperature, in other words, glue output amount, the traction speed and indoor temperature are set as fixed values, the plastifying temperature which is a variable is adjusted, five kinds of finished products plastified at different temperatures are manufactured in a trial mode, insulation voltage, tensile strength, elongation at break and hot extending tests are carried out, test results are compared, the plastifying temperature value with the best electric performance and mechanical performance is taken as the optical parameter value for the processing technology of the cable type, and the standard technological process is formed. According to the cable extrusion test run technology, a mold is precisely adjusted before cable extrusion, the structural precision is ensured, using is easy and convenient, the maneuverability is high, and the rate of rejected products produced in the cable manufacturing process can be effectively lowered.

Description

technical field [0001] The invention relates to a cable extrusion test run process. Background technique [0002] The extrusion process in cable manufacturing is a special process, the processing quality is not easy or cannot be fully verified through product inspection, and once a problem is found, the product quality cannot be guaranteed through rework, repair and other means. During the cable extrusion process, in order to prevent the problems of out-of-tolerance concentricity and plasticization of the cable insulation layer, it is necessary to adjust the distance between the mold core and the mold sleeve, the amount of glue output, the pulling speed, and the heating in the extruder before production. A series of parameters such as the temperature of the area and the nose, that is, the test run. During the test run, due to the uneven technical level of the operators and the backward processing technology, a large amount of waste will inevitably be generated, resulting in...

AI Technical Summary

Problems solved by technology

Due to the uneven technical level of the operators and the backward processing technology during the test run, a large amount of waste will inevitably be generated, resulting in an increase in product costs and a decrease in production efficiency

What's more serious is that in order to reduce costs, some enterprises crush waste materials and reuse them, which poses a huge hidden danger to the quality and safety of cables.

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