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我厂大批鑄造各种法兰水管和管件,由于設备的限制,都是采用地坑造型法。鑄出的管子和管件的法兰盘,都要进行車光平面,鑽孔等加工手續。后来我們采用了一种新的“鉄胎鑄造法”連同眼子一同鑄出。这样,省去了所有加工工序。木型結构和操作过程也大大簡化。用这种方法鑄出的管子,經长期使用并未发現任何缺陷,現在把它介绍出来供各兄弟厂参考: 一、鉄胎的結构,鉄胎做成圓柱形,从中心线把它分成二半,二半面鉄胎合拢时,用鋼销子定位。在鉄胎上、按照管件法兰的尺寸,車出阴型,并鑽上装法兰眼子泥芯的眼孔。
I plant a large number of casting all kinds of flanged pipes and fittings, due to equipment limitations, are used pit modeling method. Forged pipes and fittings of the flange, to be car light plane, drilling and other processing procedures. Later, we adopted a new “tire mold” together with the eyes cast. In this way, eliminating all processing operations. Wood structure and operation is also greatly simplified. Pipe cast in this way, after long-term use did not find any defects, and now it is introduced to the brothers for reference: First, the structure of the tire, the tire made of cylindrical, it is divided into the center line Two and a half, two half face 鉄 tire closed, with steel pin positioning. In the tire on the tire, according to the size of the pipe flange, the car out of the negative, and drilling flange hole eyeshadow muddy eye.