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Fast and efficient grinding technology for improvement of aluminum sectional bar

A high-efficiency technology for aluminum profiles, which is applied in the field of improving the fast and efficient sanding process of aluminum profiles, can solve the problems of adding sandblasting equipment, long time consumption, and complicated process flow, so as to speed up the oxidation speed, reduce aluminum consumption, and reduce the surface pretreatment process Effect

Inactive Publication Date: 2018-01-05
TIANJIN SHENGHAI YUANDA ALUMINUM IND CO LTD
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AI Technical Summary

Problems solved by technology

Although the effect of sand surface can be obtained, sandblasting equipment needs to be added, the process is complicated and time-consuming

Method used

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Embodiment Construction

[0018] Embodiments of the present invention will be described in detail below. An improved fast and efficient grinding process for aluminum profiles, characterized in that it includes the following steps:

[0019] Step 1: Alkaline etching treatment of aluminum profiles, using alkaline etchant to react with aluminum profiles to remove surface grease, dirt and natural oxide film. The composition of the alkali etching agent is Na2CO3 90 / L, NaOH 9g / L, Na2SO4 28g / L, Na3PO4 20g / L, sodium dodecylsulfonate 0.8g / L, glycerol 8g / L. The pretreatment temperature is 58°C, and the pretreatment time is 12 minutes.

[0020] Step 2: neutralize the aluminum profile; use an acid neutralizer to remove the lye remaining on the surface of the aluminum profile that has undergone alkali etching treatment;

[0021] Step 3: aluminum profile oxidation treatment; the aluminum profile is used as an anode and placed in a sulfuric acid electrolyte containing additives for electrolytic oxidation, and an art...

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Abstract

The invention relates to a production process for surface treatment of aluminum profiles, in particular to an improved rapid and high-efficiency sanding process for aluminum profiles. An improved fast and efficient sanding process for aluminum profiles disclosed by the present invention has the following beneficial effects: the aluminum profiles are pretreated with an alkali etching agent mainly composed of Na2CO3, and the anodic oxidation adopts a sulfuric acid electrolyte added with an organic acid to widen the oxidation temperature range , to speed up the oxidation rate. While not reducing the sand surface treatment effect of aluminum profiles, it reduces the surface pretreatment process of aluminum profiles and reduces aluminum consumption.

Description

technical field [0001] The invention relates to a production process for surface treatment of aluminum profiles, in particular to an improved rapid and high-efficiency sanding process for aluminum profiles. Background technique [0002] Aluminum profiles are prone to corrosion when they are in use. In order to improve the corrosion resistance of the aluminum profile surface, it is necessary to carry out surface treatment on the aluminum profile. Most of the existing aluminum profiles use acid etching for surface pretreatment to eliminate defects such as metallic luster and surface lines. However, the hydrogen fluoride in the etchant is relatively harmful to the environment. The old-fashioned alkali etching treatment method has high aluminum consumption and a lot of alkali slag. A sandblasting process for aluminum profiles is proposed. Before the pretreatment, the aluminum profiles are sandblasted, and the glass sand is driven by high-pressure gas to impact the surface of ...

Claims

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Application Information

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IPC IPC(8): C23G1/22C23F1/36C25D11/10C25D11/08C25D11/18C23F17/00
Inventor 刘焕明
Owner TIANJIN SHENGHAI YUANDA ALUMINUM IND CO LTD
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