A kind of preparation method of high and low temperature resistant, high pressure rubber corrugated hose
A corrugated hose, high and low temperature resistant technology, applied in the direction of rubber layered products, chemical instruments and methods, tubular objects, etc., can solve the problems of corrugated hose pressure hidden danger, no fiber fabric, cracking, etc., to prevent corrugated hose Effects of cracking, enhancing toughness and strength, and prolonging service life
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Embodiment 1
[0030] The preparation method of a kind of high and low temperature resistant, high pressure rubber corrugated hose of this embodiment comprises the following steps:
[0031] (1) Put the silicone rubber material into the first preforming mold and carry out semi-vulcanization to form the innermost preform C1, that is, the first silicone layer 1;
[0032] (2) Cover the surface of the preform C1 with a fiber fabric to obtain a preform C2, that is, the first silica gel layer 1 whose surface is covered with the fiber fabric layer 2;
[0033] (3) Semi-vulcanize the silicone rubber material in the second preforming mold to form the outermost preform C3, that is, the third silicone layer 3;
[0034] (4) Put the preform C2 into the preform C3, put it into the final forming mold, carry out complete vulcanization, and then demold to obtain the preform C4;
[0035] (5) Trim the edge of the preform C4, and then carry out two-stage vulcanization. After the two-stage vulcanization, the fina...
Embodiment 2
[0038] In this embodiment, on the basis of the above embodiments, it is further defined that the first preforming mold, the second preforming mold, and the final forming mold have the same structure, and are all composed of an inner core and an outer outer mold of corresponding size.
[0039] Among them, the first preforming mold is composed of a core A1 and an outer mold B2, the outer diameter of the core A1 is designed according to the inner diameter of the corrugated hose, and the inner diameter of the outer mold B2 is based on the inner diameter of the corrugated hose plus the thickness of the preform C1 Design; the second preforming mold is composed of core A2 and outer mold B1. The outer diameter of core A2 is designed according to the inner diameter of the corrugated hose plus the thickness of preform C1, plus the thickness of the fiber fabric layer. The outer mold B1 The inner diameter of the corrugated hose is designed according to the outer diameter of the corrugated ...
Embodiment 3
[0041] In this embodiment, on the basis of the above-mentioned embodiments, it is further defined that the cores are all six-lobe combined core molds, and the outer molds are composed of an upper mold and a lower mold.
[0042] The specific structure of the forming mold is as follows: figure 2 As shown, the forming mold is composed of the core 4, the upper mold 5, the lower mold 6, the overflow / exhaust groove 7, the guide pin 8, the handle 9, and the outer mold formed by the combination of the upper mold 5 and the lower mold 6, The inner diameter cavity is the profile that forms the shape of the preform, the outer diameter profile of the core 4 is the profile that forms the inner cavity of the preform, the upper mold 5 and the lower mold 6 are connected by guide pins 8, and the forming mold The mold opening and closing is operated with handle 9.
[0043] Among them, the upper mold 5, the lower mold 6, and the core 4 of the molding die are made of 45# carbon steel, the guide ...
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