机械5

技术要求 TECHNICAL REQUIREMENTS 1.不锈钢复合钢板按GB/T8165-1997《不锈钢复合钢板和钢带》Ⅰ级或JB4733-1996《压力容器用爆炸不锈钢复合钢板》B1级选用。 STAINLESS STEEL CLAD PLATE SHALL BE USED GRADE I IN ACCORDANCE WITH GB/T8165-1997《STAINLESS STEEL CLAD PLATE》 OR GRADE B1 IN ACCODANCE WHIT JB4733-1996 《EXPLOSIVE STAINLESS CLAD STEEL PLATE FOR PRESSURE VESSELS》. 2.管板密封面应与轴线垂直,其垂直度允差为0.4mm。管孔应严格垂直于密封面,其垂直度允差为0.08mm。 TUBESHEET FACE SHALL BE PERPENDICULAR TO THE AXIS LINE.TOLERANCE OF PERPENDICULARITY SHALL BE 0.4mm.TUBE HOLE BE PERPENDICVLAR TO TUBE SHEET FACE,TOLERANCE OF PERPENDICULARITY SHALL BE 0.08mm. 3.管板钻孔后大于或等于96%的孔桥宽度必须大于或等于5.25mm,允许有小于或等于4%且不超过5个最小孔桥宽度为3.175mm。 NO LESS THAN 96% OF LIGAMENT WIDTH BETWEEN CONTINOUS HOLES SHALL BE MORE THAN 5.25mm,THE MINIMUM WIDTH SHALL BE 3.175mm. THE NUMBER OF CONTINOUS HOLES SHALL BE NOT EXCEEDED 5 (4%). 4.螺柱孔中心圆直径和相邻两螺柱孔弦长公差为%%p0.6mm,任意两螺柱孔弦长公差为%%p1.5mm。 TOLERANCE OF BOLT OR HOLE CIRCLE DIAMETER SHALL BE %%P0.6mm. TOLERANCE OF CHORD BETWEEN TWO RANDOM BOLT HOLES SHALL BE %%P1.5mm. 5.除注明者外,加工面未注公差尺寸的极限偏差按GB/T1804-2000《一般公差未注公差的线性和角度尺寸的公差》中m级进行验收。 THE UNNOTED TOLERANCE OF MACHINED SURFACE SHALL BE INSPECTED IN ACC -ORDANCE WITH GB/T 1804-2000 OTHERWISE NOTED.THE ACCEPTABLE QUALITY SHALL BE CLASS m. 6.图中未注尖角倒钝。 SHARP CORNERS SHALL BE CHAMFERED.