Zirconium-manganese-vanadium passive film treating agent for die cast aluminium alloy and treatment method thereof

A technology of casting aluminum alloy and processing method, which is applied in the direction of metal material coating process, etc., can solve the problems of harmfulness to human body, strong carcinogenicity, harm to human health and global biological health, etc., and achieve high corrosion resistance and salt spray resistance Good, good adhesion effect

Active Publication Date: 2016-10-26
广东东明新材科技有限公司
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AI Technical Summary

Problems solved by technology

[0004] However, traditional die-casting aluminum alloy passivation film treatment agents usually contain hexavalent chromium and/or trivalent chromium, and during the treatment process, the discharged wastewater will contain hexavalent chromium and trivalent chromium
Because all chromium compounds are toxic, hexavalent

Method used

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[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, many specific details are explained in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0028] The passivation film treatment agent for die-casting aluminum alloy according to an embodiment includes the following components by mass:

[0029]

[0030] A passivation film treatment agent for die-casting aluminum alloy according to another embodiment includes the following compon

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Abstract

The invention discloses a passive film treating agent for die cast aluminium alloy and a treatment method thereof. The passive film treating agent for die cast aluminium alloy comprises the following components in parts by mass: 1 to 20 parts of inorganic acid, 1 to 20 parts of zirconate, 1 to 20 parts of vanadate, 1 to 20 parts of manganate, 1 to 20 parts of calciate and 0.2 to 10 parts of an activating agent. Relative to a traditional phosphorus-containing chromium-free passive film treating agent for die cast aluminium alloy, which causes pollution to the environment, the passive film treating agent for die cast aluminium alloy can form a phosphorus-free chromium-free Zr-Mn-V passive film on the surface of die cast aluminium alloy, the passive film has the advantages that the adhesive force is good, the corrosion resistance is high, and the salt mist resistance and film forming uniformity are good, and besides, the obtained passive film can be guaranteed to have a silver white metal appearance the same as the die cast aluminium alloy.

Description

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Claims

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Application Information

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Owner 广东东明新材科技有限公司
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