从法国引进生产化纤产品的成套大型设备,经过一年多时间的连续使用,在首次检修中,发现醋酸精馏塔的40块T40钛材(板厚3毫米)塔板中的三块塔板边缘紧靠固定螺栓处,有五处穿透性裂纹,最长达370毫米,短的145毫米。裂纹是由于塔板上残余应力和设备组装时受力不均而产生的。我们 From the introduction of a complete set of large-scale equipment for the production of chemical fiber products from France, after more than one year of continuous use, in the first overhaul, three of the 40 T40 titanium plates (3 mm plate thickness) of the acetic acid rectifying tower were found Edge close to the fixing bolt, there are five penetrating cracks, up to 370 mm, short 145 mm. Cracks are due to residual stress on the trays and uneven loading of the equipment during assembly. we