我厂从1971年开始潮型铸造,现在汽车起重机一百四十多种铸件全部实现了潮型潮芯生产。其中有重170公斤,有5个复杂芯子的箱体;有壁厚110毫米,重260公斤的铸件。滑轮铸件改为新工艺后,滑轮绳槽部分可直接铸出,不需机加工,光洁度可达(?)3。该工艺简单易行、效率较高、粉尘降低、铸件精度和光洁度较高,废品率稳定在4%左右。我厂还用此工艺铸出2.5吨重的导轨磨床床身和10吨大平台铸件,无缺陷,质量良好。现将潮型铸造工艺简介如下。一、型砂在潮型铸造中,铸件质量在很大程度上取决于型砂性能,因此对型砂要加强管理和控 Our factory began tide-casting in 1971. Nowadays, more than 140 kinds of castings for truck cranes have all achieved the production of tide-type wave cores. There are boxes with a weight of 170 kilograms and 5 complex cores; castings with a wall thickness of 110 mm and a weight of 260 kilograms. After the pulley casting is changed to a new process, the part of the pulley rope groove can be cast directly without machining, and the finish can reach (?)3. The process is simple and easy, high efficiency, dust reduction, casting accuracy and finish is high, the scrap rate is stable at about 4%. Our factory has also used this process to cast 2.5 tons of rail grinding machine bed and 10 tons of large platform castings, no defects, good quality. The following is a brief introduction of the tide casting process. First, sand In the tide-type casting, casting quality depends to a large extent on sand performance, so it is necessary to strengthen management and control of sand