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Aluminium alloy surface electric plating iron machining process

A technology of aluminum alloy surface and processing technology, which is applied in the field of processing technology for electroplating iron on the surface of aluminum alloy, which can solve the problems of rough surface of the coating, uneven thickness of the iron coating, complicated processing procedures, etc., and achieve uniform thickness of the coating and bright appearance of the coating , to achieve the effect of mass production

Inactive Publication Date: 2008-09-17
薛玉田
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current processing technology of electroplating iron on the surface of aluminum alloy has uneven thickness and rough surface of the coating, which cannot meet the final processing accuracy requirements. Therefore, after electroplating iron on the surface of aluminum alloy, electroplating The parts are mechanically processed to meet the high-precision requirements, and the processing procedures are complicated. Moreover, the thickness of the plating layer of the electroplated parts cannot be consistent each time, and the requirements for mass production cannot be achieved.

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  • Aluminium alloy surface electric plating iron machining process
  • Aluminium alloy surface electric plating iron machining process
  • Aluminium alloy surface electric plating iron machining process

Examples

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Embodiment Construction

[0073] Best practice:

[0074] This example takes iron plating on the surface of the cast aluminum alloy piston as an example. The iron plating on the surface of the aluminum piston requires that the thickness of the coating on the working surface of the piston skirt is 6.5 μm to 33 μm, and it meets the requirements before electroplating: ring groove width = 1.651 0 +0.025 , after electroplating: the width of the ring groove ≥ 1.639; the coating is uniform and dense, without burrs; the adhesion of the coating meets the thermal shock method or the grid method, and the coating is not allowed to fall off; the internal combustion engine bench test is 300 hours, and the coating is not allowed to fall off; the corrosion resistance of the coating Meet the damp heat test for 96 hours without rust. Aluminum piston electroplating process, including the following sequential steps:

[0075] 1. Degreasing, provide an ultrasonic cleaning machine, add cleaning agent in the cleaning tank of...

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Abstract

A process for galvanizing iron on an aluminum alloy surface includes the following steps: (1) glaring, an aluminum alloy galvanized component is provided and carries out glaring treatment; (2) washing, the galvanized component after glaring treatment is washed; (3) zincing, the galvanized component after washing carries out zinc impregnation; (4) galvanizing, a plating bath is provided, electroplating solution mixed by ferrous chloride of 350g / L, sodium chloride of 10g / L, manganese chloride of 3g / L and boric acid of 5g / L is added into the plating bath, the pH value of the electroplating solution is 1.2, the galvanized component is put in the plating bath and carries out electrolytic reaction for 8 min at the temperature of 45 DEG C, the current density is 4A / dm<2>; (5) neutralizing the electroplating solution, the galvanized component after galvanization carries out the treatment of neutralizing the electroplating solution; (6) the galvanized component carries out rust-proofing treatment and natural airing to obtain a finished product. The plating formed on the surface of the aluminum alloy galvanized component has even thickness and glaring appearance, and mass production can be realized.

Description

technical field [0001] The invention relates to electroplating, a plating solution used in it, in particular to a processing technology for electroplating iron on the surface of an aluminum alloy. technical background [0002] Electroplating is the use of electrolysis to deposit metal coatings with good adhesion on mechanical products, but with different properties and base materials. Generally, it is used to obtain decorative protective and various functional surface layers on mechanical products, and can also repair wear and tear. and workpieces with machining errors. However, in the current processing technology of electroplating iron on the surface of aluminum alloy, the thickness of the iron plating layer is uneven, and the surface of the coating layer is rough, which cannot meet the requirements of final processing accuracy. The parts are mechanically processed to meet the requirements of high precision, and the processing procedures are complicated. Moreover, the thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/20C25D5/30C25D5/44
Inventor 薛玉田
Owner 薛玉田
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