CN104250777A

CN104250777A - Normal temperature multifunctional phosphating solution for highway guardrails

Info

Publication number: CN104250777A
Application number: CN201310268243.9A
Authority: CN
Inventors: 高忠清
Original assignee: WUXI LUOSHE TECHNOLOGY VENTURE Co Ltd
Current assignee: WUXI LUOSHE TECHNOLOGY VENTURE Co Ltd
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2014-12-31

Abstract

The present invention discloses a normal temperature multifunctional phosphating solution for highway guardrails. The normal temperature multifunctional phosphating solution comprises 135-145 g/L of 85% phosphoric acid, 35-45 g/L of zinc oxide, 30-40 g/L of magnesium oxide, 20-24 g/L of calcium hypophosphite, 8-12 g/L of triethanolamine, 3-5 g/L of sodium nitrite, 5-7 g/L of sodium fluoride, 2-4 g/L of sodium chlorate, 2.5-3.5 g/L of citric acid, 1.5-2.5 g/L of ammonium molybdate, 5-7 g/L of peregal, 6.5-7.5 g/L of OP-10, and the balance of water.

Description

A kind of freeway guardrail normal temperature multifunction phosphide liquid

Technical field

The present invention relates to technical field of surface, particularly relate to a kind of freeway guardrail normal temperature multifunction phosphide liquid.

Background technology

Traditional phosphating process is that pickling, after neutralization, then carries out bonderizing on metallic matrix by the oil on metallic surface and rust (oxide skin) alkali cleaning before phosphatization.Phosphatization forms one deck chemical conversion membrane process, and this layer of phosphatize phosphate coat mainly plays antirust and bottoming effect, has the sticking power and solidity to corrosion that improve paint film significantly.At present, what phosphating process was with the most use is middle temperature (45-80 DEG C) and low temperature (30-40 DEG C) phosphatization, and Chinese patent CN1057681A and CN1066894A has reported room temperature (12-35 DEG C) Phosphating Solution respectively, but all must heat during the work of these Phosphating Solutions, maintain certain temperature, facility investment is large, has a large amount of bubble to produce, cause acid mist during phosphatization, work under bad environment, not only energy consumption is high, has three-waste pollution, is difficult to the operation that links.Low temperature (below 18 DEG C) phosphatization polyphyly crystallite phosphatization, the middle temperature phosphating film that the character such as sticking power are more traditional is good, but this film formation at low temp speed is slow, and film is too thin, poor stability, both at home and abroad still in the Study and Development stage.

In recent years, another problem of phosphating process research is multi-functional or claims comprehensive Phosphating Solution, traditional phosphating process is comprised oil removing, rust cleaning (descaling), and the operation such as phosphatization, passivation simplifies, and shortens operation, reduces facility investment, alleviates labor strength.Therefore; there is the report of so-called " two-in-one ", " three-in-one ", " four-in-one " Phosphating Solution novel process; this new phosphide liquid has multi-functional; the function that particularly descales is very important; it is exactly sand-blast that traditional rust cleaning descales except pickling, and labour intensity is large, and workpiece deformation is large; noise is large, and operator are easy to get tin lung disease; Have and adopt micro-oxygen or anaerobic method for annealing, make workpiece surface not easily form thicker oxide skin, also have and adopt Phosphating with High Acidity Bath Solution liquid to descale, but according to the deposition theory of the people such as Machu, film forming is difficult to, so the freeness of phosphating solution at room temperature should be low as far as possible under highly acidity.Therefore, phosphating solution at room temperature does not have the function descaled substantially.

Freeway guardrail steel plate length is longer, if carry out middle high temperature phosphorization to it, then needs larger container to hold Phosphating Solution, and needs heating.Therefore, cost is comparatively large, and efficiency is lower.And if the operation it once being eliminated rust before phosphatization again, descales, then adds additional cost again, therefore, for the bonderizing of freeway guardrail, need one badly to carry out at normal temperature, and with rust cleaning and the Phosphating Solution of the function that descales, also make rust cleaning, to descale and phosphating process carries out in a step, thus save cost.

Summary of the invention

The object of the invention is to propose a kind of freeway guardrail normal temperature multifunction phosphide liquid, this Phosphating Solution, by the adjustment to component, makes it with rust cleaning, descales function, thus simplify the treatment process of freeway guardrail.

For reaching this object, the present invention by the following technical solutions:

A kind of freeway guardrail normal temperature multifunction phosphide liquid, consisting of of this Phosphating Solution: 85% phosphatase 11 35-145g/L, zinc oxide 35-45g/L, magnesium oxide 30-40g/L, Lime Hypophosphate 20-24g/L, trolamine 8-12g/L, Sodium Nitrite 3-5g/L, Sodium Fluoride 5-7g/L, sodium chlorate 2-4g/L, citric acid 2.5-3.5g/L, ammonium molybdate 1.5-2.5g/L, peregal 5-7g/L, OP-106.5-7.5g/L, surplus is water.

Preferably, consisting of of this Phosphating Solution: 85% phosphatase 11 40g/L, zinc oxide 40g/L, magnesium oxide 35g/L, Lime Hypophosphate 22g/L, trolamine 10g/L, Sodium Nitrite 4g/L, Sodium Fluoride 6g/L, sodium chlorate 3g/L, citric acid 3.0g/L, ammonium molybdate 2.0g/L, peregal 6g/L, OP-107.0g/L, surplus is water.

Beneficial effect of the present invention is:

1) select different additives, promotor, the working temperature that can reduce Phosphating Solution does not need heating, a large amount of conserve energy, simplifies operation, shortens the production cycle, improve production efficiency.

2) this Phosphating Solution possesses rust cleaning and the function that descales, and makes without the need to carrying out sandblasting, the operations such as pickling before bonderizing, thus saves operation, saves cost, improves production efficiency, be suitable for the bonderizing of freeway guardrail.

Embodiment

Embodiment one

A kind of freeway guardrail normal temperature multifunction phosphide liquid, consisting of of this Phosphating Solution: 85% phosphatase 11 35g/L, zinc oxide 45g/L, magnesium oxide 30g/L, Lime Hypophosphate 24g/L, trolamine 8g/L, Sodium Nitrite 5g/L, Sodium Fluoride 5g/L, sodium chlorate 4g/L, citric acid 2.5g/L, ammonium molybdate 2.5g/L, peregal 5g/L, OP-107.5g/L, surplus is water.

Embodiment two

A kind of freeway guardrail normal temperature multifunction phosphide liquid, consisting of of this Phosphating Solution: 85% phosphatase 11 45g/L, zinc oxide 35g/L, magnesium oxide 40g/L, Lime Hypophosphate 20g/L, trolamine 12g/L, Sodium Nitrite 3g/L, Sodium Fluoride 7g/L, sodium chlorate 2g/L, citric acid 3.5g/L, ammonium molybdate 1.5g/L, peregal 7g/L, OP-106.5g/L, surplus is water.

Embodiment three

A kind of freeway guardrail normal temperature multifunction phosphide liquid, consisting of of this Phosphating Solution: 85% phosphatase 11 40g/L, zinc oxide 40g/L, magnesium oxide 35g/L, Lime Hypophosphate 22g/L, trolamine 10g/L, Sodium Nitrite 4g/L, Sodium Fluoride 6g/L, sodium chlorate 3g/L, citric acid 3.0g/L, ammonium molybdate 2.0g/L, peregal 6g/L, OP-107.0g/L, surplus is water.

Claims

1. a freeway guardrail normal temperature multifunction phosphide liquid, is characterized in that, consisting of of this Phosphating Solution: 85% phosphatase 11 35-145g/L, zinc oxide 35-45g/L, magnesium oxide 30-40g/L, Lime Hypophosphate 20-24g/L, trolamine 8-12g/L, Sodium Nitrite 3-5g/L, Sodium Fluoride 5-7g/L, sodium chlorate 2-4g/L, citric acid 2.5-3.5g/L, ammonium molybdate 1.5-2.5g/L, peregal 5-7g/L, OP-106.5-7.5g/L, surplus is water.

2. a kind of freeway guardrail normal temperature multifunction phosphide liquid as claimed in claim 1, is characterized in that, consisting of of this Phosphating Solution: 85% phosphatase 11 40g/L, zinc oxide 40g/L, magnesium oxide 35g/L, Lime Hypophosphate 22g/L, trolamine 10g/L, Sodium Nitrite 4g/L, Sodium Fluoride 6g/L, sodium chlorate 3g/L, citric acid 3.0g/L, ammonium molybdate 2.0g/L, peregal 6g/L, OP-107.0g/L, surplus is water.