Method for improving salt spray corrosion resistance of german silver

A corrosion-resistant, zinc-white-copper technology, applied in metal rolling, abrasives, manufacturing tools, etc., can solve the problems of many corrosion points of zinc-white-copper, high product surface roughness, serious corrosion conditions, etc., to meet the salt spray corrosion resistance performance. requirements, improve the effect of salt spray corrosion resistance

Inactive Publication Date: 2013-10-23
ANHUI XINKE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, the manganese content is less than 0.1%; the roll Ra is greater than 0.2 μm; the abrasive material of the grinding roll is alumina. The disadvantages of the prior art are the low content of manganese in the material, the high surface roughness of the product, and inadequate surface grinding treatment. In the salt spray corrosion test, zinc white copper has many corrosion points and serious corrosion conditions, such as Figure 4 shown

Method used

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  • Method for improving salt spray corrosion resistance of german silver
  • Method for improving salt spray corrosion resistance of german silver
  • Method for improving salt spray corrosion resistance of german silver

Examples

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Embodiment 1

[0014] This example provides a method for improving the salt spray corrosion resistance of zinc-nickel-nickel copper. The production process of zinc-nickel-nickel copper is: smelting and casting→face milling→rough rolling blanking→thick trimming→intermediate annealing→degreasing and cleaning→pre-finishing rolling → Intermediate annealing → Degreasing cleaning → Finished product rolling → Finished product annealing → Stretch bending straightening → Finished product cleaning → Slitting into storage. In the smelting process, the content of manganese is controlled, and manganese is used to slow down the occurrence of materials in the salt spray environment. The reaction speed of the original battery, the weight percentage of manganese element is 0.1%; in the rolling process of the finished product, the roll with roughness Ra=0.21μm is used to reduce the surface roughness of the material, and reduce the contact between the material surface and the salt spray corrosion medium The con...

Embodiment 2

[0017] This example provides a method for improving the salt spray corrosion resistance of zinc-nickel-nickel copper. The production process of zinc-nickel-nickel copper is: smelting and casting→face milling→rough rolling blanking→thick trimming→intermediate annealing→degreasing and cleaning→pre-finishing rolling → intermediate annealing → degreasing cleaning → finished product rolling → finished product annealing → stretch bending straightening → finished product cleaning → strip storage, in the smelting process, the content of manganese element is controlled, and the weight percentage of manganese element is 0.2%; During the manufacturing process, rolls with roughness Ra=0.19 μm are used for rolling; during the cleaning process of finished products, grinding rolls with silicon carbide abrasives are used, and the mesh number of the grinding rolls is 1500 mesh.

[0018] After the produced zinc-nickel-nickel copper is treated in 5% NaCl salt spray environment for 8 hours, the st...

Embodiment 3

[0020] This example provides a method for improving the salt spray corrosion resistance of zinc-nickel-nickel copper. The production process of zinc-nickel-nickel copper is: smelting and casting→face milling→rough rolling blanking→thick trimming→intermediate annealing→degreasing and cleaning→pre-finishing rolling → Intermediate annealing → Degreasing cleaning → Finished product rolling → Finished product annealing → Stretch bending straightening → Finished product cleaning → Strip storage. In the smelting process, the content of manganese element is controlled, and the weight percentage of manganese element is 0.5%; During the manufacturing process, rolls with roughness Ra=0.15 μm are used for rolling; during the cleaning process of finished products, grinding rolls with silicon carbide as the abrasive material are used, and the mesh number of the grinding rolls is 800 mesh.

[0021] After the produced zinc-nickel-nickel copper is treated in 5% NaCl salt spray environment for 8...

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Abstract

The invention discloses a method for improving salt spray corrosion resistance of german silver, wherein the salt spray corrosion resistance of german silver is improved by increasing the manganese content of the material, reducing the surface roughness of the material, removing erodible substance on the surface and blocking or slowing down the galvanic reaction of the german silver material in a NaCl mist environment with concentration of 5%.

Description

technical field [0001] The invention belongs to the field of metal material pressure processing, and in particular relates to a method for improving the salt spray corrosion resistance of zinc white copper. Background technique [0002] Since the salt spray corrosion resistance of zinc-nickel-nickel copper strip was proposed for the first time in the domestic market, it is required that the product has no corrosion on the surface in 5% NaCl salt spray environment for 8 hours, so there is not enough production experience and related technical means. In the prior art, the manganese content is less than 0.1%; the roll Ra is greater than 0.2 μm; the abrasive material of the grinding roll is alumina. The disadvantages of the prior art are the low content of manganese in the material, the high surface roughness of the product, and inadequate surface grinding treatment. In the salt spray corrosion test, zinc white copper has many corrosion points and serious corrosion conditions, s...

Claims

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Application Information

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IPC IPC(8): C22F1/08C22C1/02B21B27/02B24D3/04B23P15/00
Inventor 宣夕文张玲俐左悦铭
Owner ANHUI XINKE NEW MATERIALS
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