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名称：保定模具制造有限公司
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圆形混凝土检查井的成型
圆形混凝土检查井的成型：无论是带底井室还是调节块均采用芯模振动成型。在试生产带底检查井的过程中，脱内模时井底塌落。起初受到一假山制作 不锈钢铸件 铝箔真空袋 七孔梅花管 hdpe硅芯管 液压钢坝 PVC软管 飞行激光打标机 沥青保温泵些似乎理论（强调脱内膜产生的负压）的影响，脱模时井底塌落，经过反复的试验，排除了原来的错误理论的干扰，我们找到了原因，改进了生产工艺，彻底解决带底井室井底不塌落现象。相继又解决养护期间井底与井壁接触处出现环形开裂等现象
3. The molding of round concrete inspection well: both the bottom chamber and the regulating block are formed by core mold vibration. In the process of trial production of inspection well with bottom, the bottom of well collapses when the internal mold is removed. At first, influenced by some seemingly theories (emphasizing the negative pressure produced by the stripping), the bottom hole collapsed when demoulding. After repeated tests, the interference of the original wrong theory was eliminated. We found out the reason, improved the production process, and completely solved the problem of no collapse at the bottom of the well chamber with bottom. The problem of annular cracking at the contact between the bottom hole and the shaft wall during the maintenance period was solved
3. The molding of round concrete inspection well: both the bottom chamber and the regulating block are formed by core mold vibration. In the process of trial production of inspection well with bottom, the bottom of well collapses when the internal mold is removed. At first, influenced by some seemingly theories (emphasizing the negative pressure produced by the stripping), the bottom hole collapsed when demoulding. After repeated tests, the interference of the original wrong theory was eliminated. We found out the reason, improved the production process, and completely solved the problem of no collapse at the bottom of the well chamber with bottom. The problem of annular cracking at the contact between the bottom hole and the shaft wall during the maintenance period was solved
