A method for improving t-peel strength of self-adhesive coating on oriented silicon steel
A self-adhesive coating, oriented silicon steel technology, applied in chemical instruments and methods, lamination, lamination devices, etc., can solve the problems of poor coating uniformity, unsatisfactory use requirements, low peel strength, etc., to achieve consistent thickness Good performance and the effect of improving T-peel strength
Active Publication Date: 2021-11-26
武汉钢铁有限公司
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Problems solved by technology
[0005] Since the surface state, grain structure, and mechanical strength of oriented silicon steel on the substrate are greatly different from those of non-oriented electrical steel, the two-roll or three-roll reverse coating process used in the above invention is used to produce self-adhesive products on oriented silicon steel. Peel strength is low , Coating uniformity is poor, does not meet the use requirements
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Embodiment 1
[0029] like figure 1 As shown, the oriented silicon steel substrate 1 with a very thin and loose vitreous magnesium silicate bottom layer obtained by a special process enters the water scrubbing chamber 2, then passes through the pickling chamber 3, and then passes through the hot water cleaning chamber 4; the steel strip is dried in the hot air chamber 5 Finally, the self-adhesive coating is applied by the six-roller coating system 6 (6.1 is the coating liquid spray pipe, 6.2 is the coating liquid tray, and 6.3 is the coating roller), and the surface state is uniform and good, and the coating thickness is 3-6um. Bond-Coated Grain-Oriented Silicon Steel Strip 1 . Then, the oriented silicon steel substrate is sintered in three stages in the sintering furnace 7 at temperatures of 180°C, 270°C, and 300°C for 17 seconds, 17 seconds, and 17 seconds respectively; the steel strip is then cooled to ambient temperature, and finally coiled into a finished product. The finished steel pl...
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Abstract
The invention proposes a method for improving the T-peel strength of the self-adhesive coating of oriented silicon steel. After the oriented silicon steel is subjected to strong scrubbing, pickling and hot water spray washing, it is then dried with hot air and coated with six rollers to obtain self-adhesive coating. Coating oriented silicon steel strips, followed by three-stage gradient temperature sintering and cooling, and finally solidification and bonding to complete the bonding of electrical steel sheets. The present invention can obtain excellent surface conditions, and the peel strength of the finished coating can reach 1.5N / Oriented silicon steel self-adhesive coating products above mm.
Description
technical field [0001] The invention belongs to the technical field of oriented silicon steel self-adhesive coatings, in particular to a method for improving the T-type peel strength of oriented silicon steel self-adhesive coatings. Background technique [0002] In order to improve the power generation efficiency of large generator sets, a large number of motor manufacturers choose high magnetic induction oriented silicon steel to manufacture stator cells of motors, which can be widely used in large thermal power, nuclear power, wind power and other generator sets. In the manufacturing process of the stator core, self-adhesive coated oriented silicon steel is required. The surface of this oriented silicon steel is coated with an organic binder. The connection strength needs to reach a certain value to ensure the firmness and mechanical strength of the stator core. [0003] Chinese patent application number CN201810707321.3 discloses a production method of self-adhesive coat...
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IPC IPC(8): B32B37/06B32B37/10B32B37/12B32B38/16
CPCB32B37/06B32B37/10B32B37/1284B32B38/162
Inventor 田文洲马文超陈博向平李海波陶利
Owner 武汉钢铁有限公司