Cone phenolic resin composites structural parts whole-blank precast-products lapping forming technique
A composite material and molding process technology, applied in the field of composite material processing, can solve the problems of irregular and uneven shrinkage of rubber sleeves, waste of raw materials, uneven thickness, etc., to reduce the difficulty of loading and labor intensity, and reduce production costs. The effect of uniform thickness
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Embodiment 1
[0025] Processing flow such as figure 1 Shown.
[0026] A product has a large end diameter of 900mm, a small end of 700mm, a height of 1200mm, a thickness of 10mm, a machining allowance of 10mm, and a product density of 1.65g / cm 3 , The lap width is 200mm, and the whole blank is divided into 2 halves. Based on this, the flat pre-compression mold is designed. The cavity size of the flat pre-compression mold is 1620mm at the big end, 1300mm at the small end, 1200mm in width, and 150mm in depth. The calculation formula s*(d+I)*g for the loading quantity of each piece is calculated to use 58kg of phenolic premix for each preform; install the flat plate pre-compression mold on the hydraulic press, and the flat plate pre-compression mold and the integral molding female mold are simultaneously Preheat to 60℃; evenly load 58kg of phenolic premix into the flat pre-compression mold, close the mold by hydraulic press, press 1MPa, keep heat for 15min, open the mold, take out the preform, and ...
Embodiment 2
[0028] A product has a large end diameter of 1200mm, a small end of 1000mm, a height of 1600mm, a thickness of 12mm, a machining allowance of 10mm, and a product density of 1.65g / cm 3 , The lap width is 200mm, and the whole blank is divided into 4 parts. Based on this, the flat plate pre-compression mold is designed. The cavity size of the flat plate pre-compression mold is 1140mm at the big end, 1000mm at the small end, 1600mm in width, and 150mm in depth. The calculation formula s*(d+l)*g for the loading amount of each piece is calculated to use 62kg of phenolic premix for each preform; install the flat plate pre-compression mold on the hydraulic press, and the flat plate pre-compression mold and the integral forming female mold are simultaneously Preheat to 70℃; evenly load 62kg of phenolic premix into the flat pre-compression mold, close the mold by hydraulic press, press 2MPa, keep the temperature for 20 minutes, open the mold and take out the preform, and manually apply forc...
Embodiment 3
[0030] A product has a large end diameter of 600mm, a small end of 500mm, a height of 600mm, a thickness of 10mm, a machining allowance of 10mm, and a product density of 1.65g / cm 3 , The lap width is 200mm, and the unevenness of the whole blank can be divided into 2 halves. Based on this, two flat plate pre-compression molds are designed. The size of the first flat plate pre-compression mold cavity is 1100mm at the big end, 943mm at the small end, and 600mm wide. 150mm in depth, the size of the second flat plate pre-compression model cavity is 1185mm at the big end, 1028mm at the small end, 600mm in width, and 150mm in depth. According to the preform loading calculation formula s*(d+l)*g, the first one is calculated Use 20kg phenolic premix for the preform, and 22kg phenolic premix for the second preform; install the first flat pre-compression mold on the hydraulic press, and preheat the flat pre-compression mold and the integral molding female mold to 50 at the same time ℃; Load ...
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