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环缝深坡口焊接是制造多层式高压容器的关键问题之一。因为高压容器在化学反应过程中需承受很高的压力(130～320大气压力),因此容器的壁很厚(61～205毫米)。在没有大型锻冶设备的条件下,一般采用多层钢板包扎焊成长2～2.4米的厚壁节筒,再用环焊缝联接起来,并在两端焊上锻钢封头,组成7～28米长的多层式高压容器。深坡口焊接可以采用自动焊或手工焊,但手工焊接的生产率很低,劳动量大,生产周期长,并要求高级电
Girth deep bevel welding is one of the key issues in manufacturing multi-layer high pressure vessels. Because the pressure vessel is subjected to high pressures (130-320 atmospheres) during the chemical reaction, the walls of the vessel are very thick (61-205 mm). In the absence of large forging equipment conditions, the general use of multi-layer steel banding welding growth of 2 to 2.4 meters thick section of the cylinder, and then connect the ring weld, welded ends and forged steel head, composed of 7 ~ 28 meters long multi-layer pressure vessel. Deep bevel welding can be automatic or manual welding, but the low productivity of manual welding, labor-intensive, long production cycle, and requires high-level electricity