Galvanized tightly adhered stainless steel band and stainless steel binding band made of same

Abstract

The invention relates to stainless steel, and discloses a galvanized tightly adhered stainless steel band and a stainless steel binding band made of the same. The stainless steel binding band comprises a band body and a galvanized film layer, wherein the stainless steel binding band comprises a plurality of bent corners, and the band body is made of the galvanized tightly adhered stainless steel band. The galvanized tightly adhered stainless steel band is prepared from the following components in percentage by mass: 0.49-0.65 wt% of C, 14-16 wt% of Cr, 0.35-0.75 wt% of Si, 4.00-5.00 wt% of Al,0.60-1.00 wt% of Mn, 4.00 wt%-5.00 wt% of Ni, 0.01-0.02 wt% of B, 2.00-3.50 wt% of V, 1.00-1.80 wt% of Mo, 0.05-0.08 wt% of W, 0.09-0.15 wt% of N, less than or equal to 0.004 wt% of S, less than or equal 0.014 wt% of P, and the balance of Fe and other unavoidable impurities; and Al is added in form of metallic aluminum and aluminum carbide whisker, and a mass ratio of the metallic aluminum and the aluminum carbide whisker to be added is (1.2-1.3): 1. The obtained stainless steel band has tightly adhered galvanization, the bending process has little influence on the adhesion of the galvanizedfilm layer, the galvanized film layer is not prone to bubbling or peeling off, and the service life of the stainless steel binding band is prolonged.

Description

technical field [0001] The invention relates to stainless steel, in particular to a galvanized closely adhered stainless steel strip and a stainless steel binding strip made of the same. Background technique [0002] as attached figure 1 And attached figure 2 As shown, there is an existing stainless steel binding strap, which includes a stainless steel band body 1 and a zinc coating film attached to the surface of the band body 1 by electroplating. The two ends of the stainless steel strap are connected and fixed into a ring, and the stainless steel strap also has at least four corners 3, where the number of corners 3 is four, and the corners 3 directly pass through the elongated straight connecting part 4 connect. The stainless steel strap is mainly used for new energy vehicle power battery packs and energy storage battery packs, and is used to bind individual battery modules to form a battery pack. At the same time, in order to adapt to the production of stainless ste...

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Problems solved by technology

[0003] During use, it was found that the stainless steel strapping located at the corner part 3 is more prone to zinc coating blistering and zinc coating peeling than the direct connection part 4. Through the test and inspection of galvanizing, it is known that the zinc coating blistering and zinc coating The spalling of the coating is caused by the tensile damage of the zinc coating at the 3 corners and the decrease of the adhesion of the zinc coating. The existing method is to thicken the thickness of the zinc coating, but the effect is limited. After the thickness of the zinc coating is thickened, the electroplating control The difficulty increases, and the surface smoothness of the stainless steel binding strap decreases, so it needs to be improved

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