In the process, we will find that 304 stainless steel capillary tube
willhave surface defects such as edge cracks, inclusions, and scars. These defects are mainly caused by transverse cracks in the lower corner of the outer slab, fine impurities mixed in the mould, the failure to clean the oxide slag on the surface of stainless steel tubes during finishing, and the roll-over of the slab to the surface of stainless steel tubes during rolling treatment. These defects not only reduce the surface quality of stainless steel tubes but also have an impact on product quality. Therefore, it is very important to prevent and treat the surface defects of 304 stainless steel capillary tube
The deep scratches on the slab surface are caused by the non-rotation of local rollers in the sector section. In order to prevent this situation, the fan section should be maintained in time, and the equipment should not serve beyond the age limit. Small impurities in the mould will cause changes in water quality, so water samples in the mould should be checked regularly. The width of the edge crack of stainless steel plate should be weakened. Reduce the inhomogeneous deformation of the rolling edge of wide steel plate. It is the best way to reduce the width of the steel plate when rolling, that is to say, to produce a large width steel plate with wide end slab as far as possible.
Prevent the temperature of slab angle to a Brittle Zone during bending. Therefore, it is necessary to dynamically control the temperature of the slab angle with different widths, and use zone control to achieve water distribution in the bending section. To lessen the inhomogeneous deformation of the rolled parts, it is necessary to reduce the difference between the upper and lower deformation resistance of the rolled parts, optimize the slab heating process, and reduce the temperature difference between the upper and lower slabs. What`s more, in order to prevent local deep burns and clean up the secondary defects such as oxide slag on the surface of the finished slab, it is necessary to improve the finishing ability of304 stainless steel capillary tube.