A kind of production technology of frp closed stirrup
A production process and closed hoop technology, which is applied in the field of FRP closed hoop production technology, can solve the problems of easy fiber discount, material waste and time-consuming, etc., and achieve the effects of improving production efficiency, saving raw materials, and improving the retention rate of inflection point strength
Active Publication Date: 2020-08-11
沈锋
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Problems solved by technology
[0005] Purpose of the invention: The purpose of the present invention is to provide a production process for FRP closed stirrups, which can solve the problems that the fibers at the corners of the closed stirrups are prone to discounts and time-consuming problems in the production process of the current closed stirrups
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[0025] The present invention will be further explained below in conjunction with the accompanying drawings.
[0026] A kind of production technique of FRP closed stirrup of the present invention, this production technique comprises the following steps:
[0027] 1) Prepare the mold: prepare the upper mold 1 and the lower mold 2 according to the external dimensions of the FRP closed stirrup; the upper mold 1 and the lower mold 2 are made of steel, such as figure 1 As shown, the upper mold 1 has a rectangular plate body 1-1, and a rectangular groove 1-2 of the upper mold is arranged on the bottom surface of the rectangular plate body 1-1. Die arc chamfering 1-3, on the inner side of each upper die arc chamfering 1-3 is a through hole 1-4 penetrating through the rectangular plate body 1-1, the radius of the through hole 1-4 is the same as that of the upper mold Arc chamfering 1-3 have the same radius; such as figure 2 As shown, the lower mold 2 has a rectangular table 2-1, and ...
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The invention discloses a production technology of an FRP (fiber reinforced polymer / plastic) sealed stirrup. The production technology of the FRP sealed stirrup comprises the following steps that (1)molds are manufactured, specifically, the upper mold and the lower mold are manufactured according to the boundary dimension of the FRP sealed stirrup; (2) a preformed fiber bundle is formed by winding operation, specifically, a plurality of strands of fiber yarn soaked with resin are continuously and evenly wound around the outer sides of four auxiliary cylinders of the lower mold, so that the preformed continuous fiber bundle is formed; (3) the molds are assembled to conduct mold press, specifically, the upper mold and the lower mold are combined together in a press fit mode by a tight pressmechanism from top to bottom, and the preformed continuous fiber bundle is pressed into a sealed mold cavity which is formed by the upper mold and the lower mold; (4) the preformed bundle is heated and solidified, specifically, the preformed continuous fiber bundle is heated and solidified by heating pipes, so that the FRP sealed stirrup is formed; and (5) mold withdrawal is conducted, specifically, the FRP sealed stirrup is taken out through a mold withdrawal device. The production technology of the FRP sealed stirrup solves the problems that fibers at the corners of a sealed stirrup in theproduction process are prone to being broken at present, and materials and time are wasted.
Description
technical field [0001] The invention relates to the field of composite material production, in particular to a production process of FRP closed stirrups. Background technique [0002] Fiber Reinforced Polymer / Plastic (FRP for short) is a high-performance material formed by mixing fiber material and matrix material (resin) in a certain proportion. It has the advantages of light and hard, non-conductive, high mechanical strength, less recycling and corrosion resistance, and has a wide range of applications. FRP stirrups can be used in new concrete structures instead of steel bars, and have the advantages of good corrosion resistance, which can meet the use in harsh environmental conditions. [0003] The closed stirrup is a more common type of FRP stirrup, which connects the two ends of the stirrup to form a closed rectangular ring. Closed stirrups are generally used in the production of steel cages to fix the main reinforcement and bear shear loads. The current production p...
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IPC IPC(8): B29C70/34
CPCB29C70/345
Inventor 金双华沈锋
Owner 沈锋