High-temperature low-pressure steam continuous vulcanization device for rubber wires and cables

Abstract

The invention discloses a high-temperature low-pressure steam continuous vulcanization device for rubber wires and cables, which is characterized in that: low-pressure steam of 0.4MPa or below is input into a vulcanization pipeline, and each section of vulcanization pipe of a vulcanization section of the vulcanization pipeline is in electrified short circuit and is heated. The high-temperature low-pressure steam continuous vulcanization device for the rubber wires and cables comprises the vulcanization section which is connected by a plurality of vulcanization pipes, wherein each vulcanization pipe consists of a high temperature-resistant stainless steel seamless steel tube 7, an asbestos thermal insulation layer 8 coated at the periphery of the steel tube 7, and a thermally insulated fixed layer 9 fixed at the periphery of the asbestos thermal insulation layer 8; a temperature reflecting layer 10 is arranged between the steel tube 7 and the asbestos thermal insulation layer 8; a cavity is formed between the steel tube 7 and the temperature reflecting layer 10; an electric heating pipe 11 is arranged in the cavity; and the thermally insulated fixed layer 9 is made of an aluminum alloy. The device overcomes the defect that the rubber foams and cracks in the prior art, and is particularly suitable for production of cable products for railway traffic locomotives and production of other rubber wires and cables.

Description

technical field [0001] The invention relates to a production method of rubber wire and cable, in particular to a method and device for continuous vulcanization of rubber wire and cable with high-temperature and low-pressure steam. Background technique [0002] Rubber wire and cable is a relatively traditional product in the wire and cable industry. It is widely used in a mobile laying environment and has a wide range of uses. It is a major product in the wire and cable industry. The production of existing rubber wire and cable adopts the method of continuous vulcanization of high temperature and high pressure steam, that is, input high pressure steam above 1.0Mpa into the vulcanization tube, use high pressure steam as the temperature transmission medium, and the movement of high pressure steam in the pipeline plays the role of uniform temperature , so as to avoid the distortion of the rubber performance caused by the change of the vulcanization speed of the cable rubber in t...

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Problems solved by technology

[0004] This high-temperature and high-pressure steam continuous vulcanization method, due to the water content of the mixed rubber, the strength of the insulating rubber, the air in the cable core, the strength of the sheath rubber and Due to the thickness of the insulation or the sheath rubber, etc., when the rubber wire and cable are vulcanized in a high temperature and high pressure environment, the wire and cable change suddenly from the high pressure environment to the ambient pressure, and the rubber is in a negative pressure state, resulting in rubber "bubbling" or " Rupture", resulting in the production failure of rubber wire and cable products

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