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A kind of galvanized closely attached stainless steel strip and the stainless steel binding strap made of it

A stainless steel strip and stainless steel technology, applied in the field of stainless steel, can solve the problems of reduced surface flatness of stainless steel binding strips, increased difficulty in electroplating control, peeling off of zinc coating, etc., and achieves less blistering or peeling, tight bonding, and little influence on adhesion. Effect

Active Publication Date: 2021-06-18
宁波德致五金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • A kind of galvanized closely attached stainless steel strip and the stainless steel binding strap made of it
  • A kind of galvanized closely attached stainless steel strip and the stainless steel binding strap made of it
  • A kind of galvanized closely attached stainless steel strip and the stainless steel binding strap made of it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A galvanized tightly adhered stainless steel strip, the production steps are as follows:

[0050] S1: In the converter with molten iron and scrap steel, carry out conventional top-bottom combined blowing to control the blowing oxygen pressure to 0.85-0.88MPa. When the tapping temperature is 1645-1650°C, detect the carbon content in the molten steel, and control the carbon at the end of the converter to be 0.05-0.08wt%, and then tap steel into the ladle;

[0051] S2: Argon is blown from the converter to the ladle during the whole process. When the molten steel in the ladle reaches 1 / 4 of the maximum capacity of the molten steel in the ladle, add aluminum carbide whiskers, aluminum ingots, silicon-manganese alloys, and high-carbon ferrochrome to the ladle. , vanadium-iron alloy powder, nickel-iron alloy, cobalt alloy, etc., the mass ratio of aluminum ingots and aluminum carbide whiskers is 1.25-1.28:1, and the above-mentioned additions are completed before the molten stee...

Embodiment 2

[0080] A stainless steel binding strap and a galvanized closely adhered stainless steel strip, based on the basis of Example 1B, the difference is that the mass ratio of metal aluminum and aluminum carbide whiskers added is 1.2:1, and the molten steel of S2 is kept The content of other elemental components except C is close to that of Example 1B.

Embodiment 3

[0082] A stainless steel binding strap and a galvanized closely adhered stainless steel strip, based on the basis of Example 1B, the difference is that the mass ratio of metal aluminum and aluminum carbide whiskers added is 1.3:1, and the molten steel of S2 is kept The content of other elemental components except C is close to that of Example 1B.

[0083] The stainless steel strip is obtained according to the above production method, and the composition of the obtained stainless steel strip is as follows.

[0084]

[0085]

[0086] The stainless steel strips obtained in Comparative Example 1 to Comparative Example 6, Embodiment 2 and Embodiment 3 were tested, and the test results are as follows.

[0087] Comparative example one Comparative example two Comparative example three Comparative example four Comparative example five Comparative example six Embodiment two Embodiment three C / wt% 0.52 0.08 0.39 0.52 0.65 0.52 0.54 0.52 C...

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Abstract

The invention relates to stainless steel, and discloses a galvanized stainless steel strip and a stainless steel binding strip made of it. The stainless steel binding strip includes a strip body and a galvanized film layer. The stainless steel binding includes a plurality of corners. The strip body consists of A kind of galvanized closely adhered stainless steel strip is made; a kind of galvanized closely adhered stainless steel strip is made up of components comprising the following mass fractions, C: 0.49‑0.65wt%, Cr: 14‑16wt%, Si: 0.35‑0.75wt%, Al: 4.00‑5.00wt%, Mn: 0.60‑1.00wt%, Ni: 4.00‑5.00wt%, B: 0.01‑0.02wt%, V: 2.00‑3.50wt%, Mo: 1.00‑1.00wt% 1.80wt%, W: 0.05‑0.08wt%, N: 0.09‑0.15wt%, S≤0.004wt%, P≤0.014wt%, the rest is Fe and other unavoidable impurities, and the Al addition method is metal aluminum and Aluminum carbide whiskers, the mass ratio of metal aluminum and aluminum carbide whiskers is 1.2-1.3:1, the resulting stainless steel strip, galvanized adhesion is tight, the bending process has little effect on the adhesion of the galvanized film, and the galvanized film The layer is not easy to blister or peel off, which prolongs the service life of the stainless steel strapping.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/54C22C38/46C22C38/44C22C33/04B21C37/04
Inventor 冯国挺褚华波
Owner 宁波德致五金科技有限公司
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