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Metal surface treatment method

A technology for metal surface treatment and treatment liquid, applied in the field of heat treatment, can solve the problems of pitting corrosion and secondary rust of passivation film, and the corrosion resistance of passive film is not ideal, so as to save medicines, prevent pitting corrosion and secondary rust , the effect of saving production costs

Inactive Publication Date: 2020-06-23
NANNING UNIV
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  • Application Information

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Problems solved by technology

Among them, hydrogen peroxide belongs to the emerging green environmental protection passivation agent and is being widely used, but in actual implementation, the passivation film on the metal surface is prone to pitting corrosion and secondary rust, therefore, the corrosion resistance of the passivation film is not ideal

Method used

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Embodiment Construction

[0031] An embodiment of the present invention provides a metal surface treatment method, the metal surface treatment method in this embodiment at least includes the following steps;

[0032] First configure the treatment liquid, then heat the alloy steel to 600-680°C; then immerse the alloy steel in the treatment liquid for 10-15 seconds, take it out, and cool it naturally;

[0033] The treatment liquid includes the following components, and the ranges of the parts by mass and the specific gravity of each component are respectively:

[0034] Deionized water: 80-85;

[0035] Hydrogen peroxide: 6-8;

[0036] Triethanolamine: 1.2-1.5;

[0037] Trisodium phosphate: 2-4;

[0038] Citric acid: 1-1.2;

[0039] Potassium aluminum sulfate: 2-2.2;

[0040] Wherein, all the components are placed in an ultrasonic stirrer and stirred and dispersed at a frequency of 20KHz for 3-5 minutes; the temperature is kept at 45-55°C.

[0041] Preferably, wherein, the treatment liquid includes a...

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Abstract

The invention provides a metal surface treatment method, and relates to the field of metal heat treatment. The metal surface treatment method comprises the following steps that first, treatment liquidis prepared, and then alloy steel is heated to 600-680 DEG C; then the alloy steel is immersed in the treatment liquid for 10-15 seconds, and taken out for cooling naturally; the treatment liquid isprepared from the following components in parts by mass: 80-85 of deionized water, 6-8 of hydrogen peroxide, 1.2-1.5 of triethanolamine, 2-4 of trisodium phosphate, 1-1.2 of citric acid and 2-2.2 of aluminum potassium sulfate, wherein all components are put in an ultrasonic stirrer for stirring and dispersing at 20KHz frequency for 3-5 minutes; and the temperature is maintained at 45-55 DEG C. Passivation liquid of the metal surface treatment method takes hydrogen peroxide as the main passivation liquid, and a decisive role is played in the quality of a passivation film. With the consumption of hydrogen peroxide, the trisodium phosphate is used as auxiliary passivation liquid, so that the deficiency of the quality decline of the passivation film caused by the decomposition of the hydrogenperoxide in the passivation process is overcome, and meanwhile drugs are saved.

Description

technical field [0001] The invention relates to metal heat treatment material technology, in particular to a metal surface treatment method, which belongs to the technical field of heat treatment. Background technique [0002] In order to improve the properties of metal materials such as steel, it is necessary to heat treat metal workpieces. The commonly used heat treatment processes include quenching, tempering, annealing, normalizing and other heat treatment methods. [0003] Usually, the solid solution treatment of aluminum alloy, copper alloy, titanium alloy, tempered glass and other materials or the heat treatment process with rapid cooling process is called quenching. After quenching, the strength, hardness, wear resistance, fatigue strength and toughness of steel have been greatly improved, so as to meet the different requirements of various mechanical parts and tools. Quenching can also be used to meet the special physical and chemical properties of some special ste...

Claims

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Application Information

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IPC IPC(8): C23C22/08
CPCC23C22/08
Inventor 陈勇王昊田爽李孜
Owner NANNING UNIV
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