A method of immersion-plating titanium alloy parts

A technology of titanium alloy and parts, which is applied in the field of immersion plating of titanium alloy parts, can solve the problems of loss of protection effect, failure, easy peeling, etc., and achieve the effect of low material cost, low pollution and simplified production process

Active Publication Date: 2012-02-22
JIANGSU LINLONG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although some achievements have been made in preventing contact corrosion of titanium alloys at home and abroad, there are still some problems in the above-mentioned means at present.
The common problem is that the coating layer obtained by the above-mentioned technical means is easy to peel off and lose the protective effect under the synergy of environment and stress. Therefore, the current treatment method for preventing contact corrosion of titanium alloys is not suitable for the current manufacturing situation in my country. A large number of Titanium alloy fasteners urgently need to solve the failure problem caused by contact corrosion

Method used

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  • A method of immersion-plating titanium alloy parts
  • A method of immersion-plating titanium alloy parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) After degreasing the parts, carry out rust removal treatment by liquid sandblasting, the abrasive particle size is 0.1mm, and the sandblasting time is 20 minutes. After blasting, a fine polish is performed by mechanical grinding, followed by ultrasonic cleaning in acetone solution and rinsing with deionized water.

[0038] (2) Activation treatment in a mixed solution of ethylene glycol 600ml / L, acid ammonium fluoride 45g / L, nickel chloride 30g / L, boric acid 60g / L, lactic acid 35ml / L, acetic acid 230ml / L, temperature 40°C , time 40min, rinse with deionized water, and dry.

[0039] (3) Put the parts treated in (1) to (2) into the atmosphere protection furnace, and preheat at 600°C for 20 minutes.

[0040] (4) In the atmosphere protection melting furnace, immerse the preheated steel parts in the plating solution for 1 minute, and rotate the parts during the immersion process.

Embodiment 2

[0042] (1) After degreasing the parts, carry out rust removal treatment by liquid sandblasting, the abrasive particle size is 0.12mm, and the sandblasting time is 15 minutes. After blasting, a fine polish is performed by mechanical grinding, followed by ultrasonic cleaning in acetone solution and rinsing with deionized water.

[0043] (2) Activation treatment in a mixed solution of ethylene glycol 900ml / L, acidic ammonium fluoride 25g / L, nickel chloride 10g / L, boric acid 20g / L, lactic acid 10ml / L, acetic acid 70ml / L, temperature 50°C , time 35min, rinse with deionized water, and dry.

[0044] (3) Put the parts treated in (1) to (2) into the atmosphere protection furnace, and preheat at 650°C for 15 minutes.

[0045](4) In the atmosphere protection melting furnace, immerse the preheated steel parts in the plating solution for 3 minutes, and rotate the parts during the immersion process.

Embodiment 3

[0047] (1) After degreasing the parts, carry out rust removal treatment by liquid sandblasting, the abrasive particle size is 0.15mm, and the sandblasting time is 10 minutes. After blasting, a fine polish is performed by mechanical grinding, followed by ultrasonic cleaning in acetone solution and rinsing with deionized water.

[0048] (2) Activation treatment in a mixed solution of ethylene glycol 700ml / L, acidic ammonium fluoride 35g / L, nickel chloride 20g / L, boric acid 50g / L, lactic acid 20ml / L, acetic acid 180ml / L, temperature 60°C , time 30min. Rinse with deionized water and dry.

[0049] (3) Put the parts treated in (1) to (2) into the atmosphere protection furnace, and preheat at 700°C for 10 minutes.

[0050] (5) In the atmosphere protection melting furnace, immerse the preheated steel parts in the plating solution for 5 minutes, and rotate the parts during the immersion process.

[0051] Wherein, the composition and content of the plating solution in Examples 1-3 ar...

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Abstract

The present invention involves a method of immersion of titanium alloy parts, including: first step: rust removal treatment of parts on the surface of the parts; second step: surface activation treatment of parts; step 3: Put parts in the protection of the atmosphere protection of the atmosphere protectionPreheating in the furnace; fourth step: immerse the preheated parts into the plating solution, and the parts are applied to the parts during the soaking process. Among them, the plating solution is mainly composed of aluminum, silicon, zinc, rare earth elements, and micro -alloy elements.The micro -alloy elements are selected from one or any of the magnesium, iron, copper, manganese, chromium, and 锆, and each composition of components accounts for the total mass of the total plating solution: silicon content: 8 to 24 %, zinc content:The contact corrosion of steel materials.

Description

technical field [0001] The invention relates to a method for dipping titanium alloy parts. Background technique [0002] With the rapid development of science and technology, titanium alloy has the advantages of high strength and strong corrosion resistance and has become an important aerospace material. The use of titanium alloy is of great significance to reduce the weight of the aircraft and improve the performance of the aircraft. However, titanium alloy itself has good corrosion resistance. However, when it is in contact with aluminum alloy and alloy steel, under the synergistic effect of stress and environment, it is prone to contact corrosion and lead to failure. [0003] Contact corrosion is a kind of galvanic corrosion, that is, dissimilar metals are in contact in the same medium. Due to the different metal potentials, the metal with a lower potential dissolves faster, resulting in localized corrosion at the contact. The fundamental measure to control contact cor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/12C23C2/02
Inventor 冯立新张敏燕张平则
Owner JIANGSU LINLONG NEW MATERIALS CO LTD
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