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目前生产波纹管的单位较多,而且波纹管的品种也繁多,尺寸由小到大,规格有几十种。但有一个共同的特点,剖面都是圆形的。现在,我厂在生产圆形波纹管的基础上,用液压成形方法试制了一种矩形的波纹管(见图1)。此种波纹管是作为热处理气体保护炉上一种密封件,使用到现在已有六年左右,性能仍然良好。矩形波纹管是选用0.5mm厚的1Cr18Ni9Ti不锈钢板,采用不熔化钨极氩弧焊工艺,将钢板焊接成筒形,焊后进行温度达1050℃的热处理。由于生产量较少,我们不增添新设备,仅采用现成的一只三十吨机械式千斤顶,一只柴油机上的高压
The current production of bellows more units, but also a wide range of bellows, size from small to large, dozens of specifications. But there is a common feature, the sections are circular. Now, I plant in the production of circular bellows, based on the use of hydroforming a prototype of a rectangular bellows (see Figure 1). This kind of bellows is used as a kind of seal on the heat treatment gas protection furnace, it has been used for about six years and the performance is still good. Rectangular bellow is selected 0.5mm thick 1Cr18Ni9Ti stainless steel plate, the use of non-melting TIG welding process, the plate welded into a tube, welded to a temperature of 1050 ℃ heat treatment. Due to the small amount of production, we do not add new equipment, using only a ready-made 30 tons mechanical jack, a diesel engine on the high pressure