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Two-acid yellow-fume-free polishing additive and polishing solution

A technology without yellow smoke and additives, applied in the field of metal surface processing, can solve the problems of unevenness, large human injury, high energy consumption, etc., and achieve the effects of uniform gloss, good mirror effect and low temperature requirements.

Active Publication Date: 2015-12-09
FOSHAN HAIHUA SURFACE TREATMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional polishing additives require three-acid chemical polishing formula, which contains nitric acid, nitrate or nitrite, and its ingredients cause serious harm to the environment, and when polishing operations produce smoke, odor, and even toxic gases, it is very harmful to the human body. The production process needs to increase the purification equipment, the production cost is high, the temperature required for the polishing operation is high, and the energy consumption is large
At present, most of the domestic and foreign research formulas for smokeless chemical polishing agents used for aluminum alloy surface polishing use the combination of phosphoric acid, sulfuric acid and polishing additives, or use phosphoric acid, sulfuric acid, Al 3+ However, there are still some shortcomings and deficiencies in the prior art polishing additives, such as complicated maintenance of the bath solution of polishing additives, low or uneven polishing gloss, etc.

Method used

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  • Two-acid yellow-fume-free polishing additive and polishing solution
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  • Two-acid yellow-fume-free polishing additive and polishing solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A two-acid non-yellow smoke polishing additive, its composition is calculated by weight, comprising:

[0018]

[0019] Among them, ethylene thiourea acts as a corrosion inhibitor in the polishing additive of the present invention, that is, it can be adsorbed on the metal surface, and on the one hand change the charge distribution and interface properties of the metal surface, stabilize the energy state of the metal surface, and reduce the corrosion rate. On the other hand, its non-polar group forms a protective film on the metal surface, which prevents the metal surface from being further oxidized and corroded, thus acting as a corrosion inhibitor. Benzotriazole also acts as a corrosion inhibitor in the polishing additive of the present invention. It combines with metal atoms through covalent bonds and coordination bonds to form an insoluble composite film on the metal surface, preventing metal ions from dissolving into water and slowing down the corrosion rate. . T...

Embodiment 2 to Embodiment 5

[0022] The composition and content of the two-acid no-yellow smoke polishing additive of embodiment 2 to embodiment 5 and the product gloss performance after polishing are as shown in table 1. In embodiment 2 to embodiment 5, the polishing liquid of the two-acid no-yellow smoke polishing additive The composition of the matching groove and the polishing process conditions are the same as those in Example 1.

[0023] Table 1 Composition content and polishing performance of two acid-free yellow smoke polishing additives

[0024]

[0025] The appearance of the two-acid non-yellow smoke polishing additive obtained by the invention is light yellow to red mixed solid powder; the bulk density at 25°C is in the range of 0.8-1.2g / mL. As can be seen from Table 1, the average gloss of the polished product obtained by using the two-acid yellow smoke-free polishing additive of the present invention is more than 700 degrees, the gloss is uniform, and the mirror effect is very good, especi...

Embodiment 6 to Embodiment 9

[0027] The composition and content of the matching tank of the two-acid no-yellow-smoke polishing solution and the gloss performance of the product after polishing are shown in Table 2, wherein the composition and content of the two-acid no-yellow smoke polishing additive used are the same as in Example 1, and the phosphoric acid used The concentration is 80-85%, the concentration of sulfuric acid is 95-98%, and the polishing process conditions are the same as those in Example 1.

[0028] Table 2 Composition content and polishing performance of two-acid non-yellow smoke polishing fluid

[0029]

[0030] As can be seen from Table 2, the average gloss of the polished product obtained by using the matching tank of the two-acid yellow smoke-free polishing solution of the present invention is more than 700 degrees, the gloss is uniform, and the mirror effect is very good, especially when the weight ratio of phosphoric acid / sulfuric acid When it is 7 / 3, the gloss is the best and ...

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Abstract

The invention discloses a two-acid yellow-fume-free polishing additive. The polishing additive comprises 15-35 parts of ethylene thiourea, 25-45 parts of benzotriazole, 10-15 parts of ferric sulfate, 1-5 parts of nickel sulfate, 20-40 parts of ammonium molybdate and 5-15 parts of sodium molybdate. By adopting a polishing process with the two-acid yellow-fume-free polishing additive, yellow fume of nitric oxide and other gaseous pollutants cannot be produced, and the components of the polishing additive are environmentally friendly; the surface glossiness of a polished product is more than 700 degrees, the glossiness is uniform, and the mirror effect is quite good; the requirement for the polishing temperature is low, little energy is consumed, energy is saved, and the environment is protected.

Description

technical field [0001] The invention relates to the technical field of metal surface processing, in particular to a two-acid yellow-smoke-free polishing additive and a polishing liquid based thereon. Background technique [0002] Polishing agent, commonly known as brightener, light yellow or yellow transparent liquid preparation, suitable for polishing various metal or alloy products. According to market demand, preparations for different materials have been continuously evolved, such as stainless steel polishing agent, magnesium alloy polishing agent, copper polishing agent Agent, aluminum alloy polishing agent, glass polishing powder, research polishing powder, etc. As metals or alloys are more and more widely used in daily life, metal or alloy products need to be treated to obtain a more beautiful appearance, and in the automatic production process, surface treatment methods such as chemical polishing are generally used. Traditional polishing additives require three-acid...

Claims

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Application Information

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IPC IPC(8): C23F3/00
Inventor 夏良文王相刚
Owner FOSHAN HAIHUA SURFACE TREATMENT TECH CO LTD
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