The invention relates to a cable production method, discloses a horizontal vulcanized rubber sleeve cable and a manufacturing process as well as a manufacturing device thereof, and particularly relates to a horizontal vulcanized rubber sleeve cable of 35kv or above and a manufacturing process as well as a manufacturing device thereof. An 
insulation layer of the cable comprises the following materials in parts weight: 34-38 parts of CPE13513J, 4-6 parts of 
magnesium oxides, 8-12 parts of talcum 
powder, 0.8-1.2 parts of TA, 18-22 parts of light 
calcium carbonate, 0.8-1.2 parts of MT, 18-22 parts of kaolin, 0.7-0.9 part of 
silane, 0.1-0.22 part of RD, 0.1-0.22 part of A-150, 0.8-1.2 parts of paraffin waxes, 0.8-1.2 parts of ZD, 10-12 parts of dioctyl fat and 0.7-0.9 part of MM. The cable, process and device thereof disclosed by the invention have the beneficial effects that the cable is short in 
extrusion sizing time; 
silicone oil is taken as a medium, so that the cable has extremely small harmomegathus; the density of the 
silicone oil is close to that of the cable, so that the extension of the cable is stable, and a conductor is not eccentric, therefore, the cable is applicable to horizontal vulcanized pipelines; no building and no 
tower are used, thereby reducing the construction cost; no steam is used, related equipment is omitted, the 
energy consumption is low, and no emission are caused; the 
silicone oil is high in 
thermal efficiency, and the 
operating temperature is below 150 DEG C, so that no aging phenomenon is caused; and an effect of vulcanized crosslinking application is achieved, high-
voltage cables above 35kv and extra-high-tension cables of 110-500kv are produced by using a horizontal 
production line, so that the production capability and level of cables are greatly enhanced.