Plating solution suitable for plating high tin bronze coating on bead wire surface in chemical replacement mode

A surface chemical, high-tin bronze technology, applied in liquid chemical plating, coating, metal material coating technology and other directions, can solve the problems of metastannate turbidity in the plating solution, unstable coating performance, and increased production costs. Achieve the effect of preventing metastannate turbidity, low cost, and meeting production needs

Inactive Publication Date: 2010-09-08
ZHANGJIAGANG SHENGDA STEEL ROPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when chemically displacing tin-plated bronze, due to the presence of Sn in the plating solution 2+ The problem of oxidation and hydrolysis of ions makes the plating solution prone to metastannate turbidity and premature failure, resulting in unstable coating performance, poor surface quality and increased production costs, and this problem increases with the Sn in the plating solution. 2+ The greater the content, the more serious
The chemical replacement tin-plating method reported in the literature is mainly for the production of low-tin bronze bead wire, and the stability of the plating solution is low [Song Wei, Wang Baoyu

Method used

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  • Plating solution suitable for plating high tin bronze coating on bead wire surface in chemical replacement mode
  • Plating solution suitable for plating high tin bronze coating on bead wire surface in chemical replacement mode
  • Plating solution suitable for plating high tin bronze coating on bead wire surface in chemical replacement mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add copper sulfate pentahydrate, stannous sulfate, 98% concentrated sulfuric acid, stabilizers and auxiliary agents according to the ratio in Table 2 and add water to prepare 5m 3 Bath solution, the temperature of the bath solution is controlled within the range of 30±3°C.

[0025] Table 2 bath composition

[0026]

[0027] After the pre-plated bead steel wire with a diameter of 0.95mm is washed with alkali, acid and water, it is plated in the plating tank at a speed of 380m / min, and the plating time is about 1.9s. After cleaning, test the performance of the steel wire coating according to the industry standard method as shown in Table 3.

[0028] Table 3 Bead Wire Coating Properties

[0029]

[0030] Take another 5L of the plating solution and place it in a workshop environment at 30±3°C. The plating solution can remain clear within 60 days and still have plating ability, indicating that the plating solution has good stability.

Embodiment 2

[0032] Add copper sulfate pentahydrate, stannous sulfate, 98% concentrated sulfuric acid, stabilizers and auxiliary agents according to the composition in Table 4 and add water to form a 5m 3 Bath solution, the temperature of the bath solution is controlled within the range of 30±3°C.

[0033] Table 4 bath composition

[0034]

[0035] After the pre-plated bead steel wire with a diameter of 1.55mm is washed by alkali, pickling and water, it is plated in the plating tank at a speed of 220m / min. The plating time is about 3.3s. The performance of the test steel wire is shown in Table 5.

[0036] Table 5 Bead Wire Coating Properties

[0037]

[0038] Take another 5L of the plating solution and place it in a workshop environment at 30±3°C. The plating solution can remain clear within 60 days and still have plating ability, indicating that the plating solution has good stability.

Embodiment 3

[0040] Add copper sulfate pentahydrate, stannous sulfate, 98% concentrated sulfuric acid, stabilizers and auxiliary agents according to the composition in Table 6 and add water to form a 5m 3 Bath solution, the temperature of the bath solution is controlled within the range of 30±3°C.

[0041] Table 6 bath composition

[0042]

[0043] After the pre-plated bead steel wire with a diameter of 1.60mm is washed by alkali, pickling and water, it is plated in the plating tank at a speed of 190m / min. The plating time is about 3.6s. The performance of the test steel wire coating is shown in Table 7.

[0044] Table 7 Bead Wire Coating Properties

[0045]

[0046] Take another 5L of the plating solution and place it in a workshop environment at 30±3°C. The plating solution can remain clear within 60 days and still have plating ability, indicating that the plating solution has good stability.

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PUM

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Abstract

The invention relates to a plating solution suitable for plating a high tin bronze coating on a bead wire surface in a chemical replacement mode, which mainly comprises main salts, an activator, a stabilizer, an assistant and water, wherein the main salts comprise chalcanthite and stannous sulfate, the content of the chalcanthite is 10-30 g/L, the content of the stannous sulfate is 5-20 g/L, and the mass ratio of the chalcanthite to the stannous sulfate is 1.0-2.5; the activator is 98% concentrated sulfuric acid the content of which is 100-160 g/L; the stabilizer is prepared by mixing isonicotinic acid, aspartic acid, tartaric acid, citric acid and ascorbic acid in the mass ratio of 0.1-0.2:0.5-1:0.5-1:0.5-1:0.01_0.05, and the content of the stabilizer is 20-40 g/L; and the assistant is prepared by mixing sodium dodecyl benzene sulfonate, hydroquinone, catechol, resorcin and polyethylene glycol in the mass ratio of, and the content of the assistant is 1-10 g/L. The plating solution of the invention has the advantage of high stability.

Description

(1) Technical field [0001] The invention relates to a plating solution suitable for chemical displacement plating of high-tin bronze coating on the surface of bead steel wire. It belongs to the field of radial tire bead steel wire production. (2) Background technology [0002] Bead wire has high strength, good toughness, excellent fatigue performance and good linearity. It is mainly used for the edge of tires as a reinforcing skeleton material, and is usually drawn from high-carbon steel wire rod. In order to further improve the antirust performance, heat aging resistance and bonding force between the bead wire and the rubber, the surface of the bead wire usually needs to be plated. The international standard for bead wire (ISO / TC17 / SC17) proposes three coating components, including red copper, low-tin bronze (tin content≤3%) and high-tin bronze (tin content≥3%). Among them, tin bronze coating has gradually replaced copper coating due to its better performance. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/48
Inventor 徐一铭徐胜良陆海邱利斌程杰喻杰
Owner ZHANGJIAGANG SHENGDA STEEL ROPE
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