Stainless-steel roll welding band-leading method

Abstract

The invention relates to stainless steel coiling welding leader tape method. It includes the following steps: material annealing acid cleaning line tail welding tape steel head leader tape, digging edge for the welding seam; material annealing acid cleaning line coiler coiling; steam transferring steel coil; unfolding the steel coil outer ring and straightening; welding the outer ring leader tape and digging edge for the welding steam; unreeling the steel coil; coil stripping. The invention can be used in stainless steel leader tape or other steel leader tape, has little device investment, high correlate device utilization factor, and only needs part of unreeling to realize stainless steel coil two ends welding.

Description

Technical field [0001] The invention relates to a method for welding and leading a stainless steel coil. Background technique [0002] In the production of cold rolling of stainless steel strip, a single-stand reversible cold rolling mill is generally used for rolling. Due to the large distance between the coilers on both sides and the center of the roll, a total of 14m-16m of raw stainless steel strip cannot be produced on both sides. Rolling seriously affects the yield rate. In order to make full use of this part of the raw materials and increase the yield rate, generally a lead strip smaller than the thickness of the base material is welded at both ends of the stainless steel raw material strip to increase the rollable length and increase the yield rate of stainless steel. [0003] There are two existing methods for welding and leading stainless steel coils. One is to use a complete preparation machine to weld the leading strips on the black coils. The steps of the method are:...

AI Technical Summary

Problems solved by technology

[0003] There are two existing methods for welding the leaders of stainless steel coils. One is to use a complete preparation machine to weld the leaders on the black coils. Coiler, tail cutting and welding leader to realize welding leader at both ends. This method must uncoil the whole coil to the coiler, and then weld the tail leader. The disadvantage is that a complete preparation unit is required, and the investment is large. , the whole roll needs to be uncoiled when adding the leader tape, which takes a long time for the equipment, the utilization rate of the equipment is low, and it is easy to damage the surface of the steel coil. Because the leader tape is directly welded on the black coil, the tension will be pressed in the production of the raw material annealing and pickling line in the future. It is difficult to control, and it is easy to cause serious consequences such as broken belts in the furnace. At the same time, because the leader belt itself passes through the heating production line with the steel coil, it occupies the capacity of the unit and affects the production capacity of the raw material annealing and pickling line. In addition, because it needs to pass through the production line with stainless steel , the leader must be made of 300 series austenitic stainless steel

Another method is to add a head leader on the simple preparation unit (only coiler, welding machine without coiler), the steps of this method are: uncoiling, head cutting, welding leader, steel coil return coiling Although this method has a small investment in equipment and does not need to unwind the entire coil, it can also weld the leader on the white belt, but it can only be added to one end of the steel coil, and the other end cannot be added to the leader, which cannot fully meet the requirements of stainless steel production. Need, in the process of rolling, the consumption of raw materials is large

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