这里指的表面缺陷是多角形(波纹)、拉毛划伤、螺旋形和烧伤这四个方面。虽然这些缺陷在图纸上无明确标注,但在实际使用时是有影响的。如轴承厂生产的轴承,即使轻度烧伤也直接影响到它的使用寿命,滚道上的波纹将会使噪音增大和降低寿命。液压阀体由于槽与槽之间距离短,拉毛划伤将会造成压力油的互通。又如轧制微米级薄带的轧辊表面,不允许有拉毛划伤和波纹,这些缺陷将会在轧制过程中引起薄带断裂,轧辊表面的波纹也会复 Here refers to the surface defects are polygonal (ripple), razor scratches, spiral and burn these four areas. Although these defects in the drawings are not clearly marked, but in actual use are influential. Such as the bearing factory bearings, even mild burns also directly affect its service life, raceway ripple will make the noise increase and reduce life expectancy. Hydraulic valve body due to the short distance between groove and groove, scratching scratches will cause pressure oil interoperability. Another example is rolling micron-scale roll roll surface, does not allow razor scratches and ripples, these defects will cause the strip in the rolling process of fracture, the surface of the roll ripples will be complex