| 玻璃钢风管手糊工艺 |
| 添加时间：2019/8/20 10:31:53 浏览次数： |
| 手糊工艺 Hand lay-up 1) 首先在模具成型面上涂抹脱模剂（或在模具外表面包上一层透明的玻璃纸），待充分干燥后，将加有引发剂（或固化剂）、促进剂等添加剂均匀涂刷在模具成型面上，随之在其上铺放裁剪好的玻璃布。然后在铺好的玻璃布上再涂刷氯氧镁水泥，并注意驱除气泡。涂刷好氯氧镁水泥浆后再铺上剪好的玻璃布，如此重复上述操作，直到达到设计和规范厚度。 1) Apply release agent (or coat transparent cellophane on the exterior surface of the mould) on the surface of the mould first. After fully drying, add initiator (or curing agent), accelerator and other additives to the surface of the mould evenly, and then lay the cut glass cloth on it. Then brush magnesium oxychloride cement on the glass cloth, and pay attention to the removal of bubbles. After brushing the magnesium oxychloride cement slurry, the sheared glass cloth is laid, and the above operation is repeated until the design and specification thickness are reached. 2) 风管表层浆料厚度以压平玻璃纤维网格布纹理为宜（可见布纹）。管壁表面不允许有密集气孔和漏浆，以避免承受弯曲拉应力（正风压）、弯曲压应力（负风压）时的应力集中。 2) It is advisable to flatten the texture of fiberglass mesh (visible texture) for the thickness of slurry on the surface of air duct. Dense air holes and slurry leakage are not allowed on the pipe wall surface to avoid stress concentration under bending tensile stress (positive wind pressure) and bending compressive stress (negative wind pressure). 3) 管体与法兰转角处应有过渡圆弧，过渡圆弧半径应为壁厚的0.8～1.2倍，才能提高悬臂状态法兰承载能力和避免应力集中。要求风管法兰处的玻璃纤维网格布应延伸至风管管体上。 3) There should be transition arc at the corner of pipe and flange, and the radius of transition arc should be 0.8-1.2 times of wall thickness, so as to improve the bearing capacity of flange in cantilever state and avoid stress concentration. It is required that the fiberglass mesh at the flange of the air duct should be extended to the air duct body. |
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