CN101225522B - Metal deoiling cleaning agent and deoiling method thereof - Google Patents
Metal deoiling cleaning agent and deoiling method thereof Download PDFInfo
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- CN101225522B CN101225522B CN2008100693654A CN200810069365A CN101225522B CN 101225522 B CN101225522 B CN 101225522B CN 2008100693654 A CN2008100693654 A CN 2008100693654A CN 200810069365 A CN200810069365 A CN 200810069365A CN 101225522 B CN101225522 B CN 101225522B
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Abstract
The invention relates to a metal degreasing and cleaning agent, comprising pretreatment fluid and degreasing powder; wherein, the pretreatment fluid and the degreasing powder comprise sodium hydroxide, sodium carbonate, sodium phosphate, builder, antifreeze and various surface-active materials. The degreasing method comprises following steps: first, mixing degreasing powder and water to prepare degreasing liquid with 5% mass concentration, and adding the builder; second, spraying the pretreatment fluid on the metal surface to be degreased, and washing the metal surface; third, putting into the degreasing liquid prepared in the first step for cleaning; fourth, taking out the cleaned metal, rinsing with hot water and drying. The metal degreasing and cleaning agent has the advantages of low application temperature with actual application temperature of -5 to 100 DEG C, ability to removing over 99% oil on metal surface within two minutes at normal temperature, slight emulsification, long life cycle, low cost, less environmental pollution, and high-efficient and fast degreasing.
Description
Technical field
The present invention relates to the metallic surface electroplate, before phosphatization, plastic-blasting, the operation such as spray paint, the clean-out system and the method thereof of its surface being carried out pre-treatment.
Background technology
Every field in production and industrial processes all needs to clean the oil removing operation, all needs to clean as surfaces such as metal, glass, enamel, plastics and coating.The character on the various surfaces that are cleaned is very inequality, but the purpose of cleaning is consistent, all is to remove degrease, organic residue and pigment dirt and tectum and oxidizing substance, utilizes alkaline solution to greasy saponification, to remove the saponification quasi-grease; Utilize the emulsifying effect of tensio-active agent, to remove non-saponification quasi-grease.All vegetables oil and animal grease all belong to the saponification quasi-grease, and the mineral oil that the mixture of all hydrocarbon polymers is formed as gasoline, Vaseline, paraffin, various lubricated wet goods, all is non-saponification quasi-grease.
The quality of metallic surface deoiling effect, the decision metal is an important link in the metal finishing in the quality quality of application layers such as electroplating, spray paint.At present, industrial normally used be alkaline degreasing technology, how with sodium hydroxide, yellow soda ash and sodium phosphate as oil-removing cleaning agent.And these oil-removing cleaning agents to remove speed oil very slow, generally metal need be placed in the oil-removing cleaning agent solution and soak for a long time---usually greater than 5min, and need higher temperature.Therefore, efficient is very low, and it is not good to clean deoiling effect, and cost is very high, influences follow-up suface processing quality.In addition, owing to the emulsive reason, the life cycle of existing oil-removing cleaning agent is also shorter.
Summary of the invention
At the deficiencies in the prior art, first purpose of the present invention provides a kind of can in the short period of time the greasy dirt on the metallic surface being removed and metal degreasing clean-out system that life cycle is long.
Second purpose of the present invention provides a kind of method of metal being carried out oil removal treatment.
For realizing first goal of the invention, provide a kind of like this metal degreasing clean-out system.Aspect same as the prior art is that this clean-out system includes sodium hydroxide, yellow soda ash and sodium phosphate.Its improvements are that this clean-out system is divided into pretreatment liquid and removes oil-bound distemper two portions:
The component of its pretreatment liquid is: sodium hydroxide 3～100g/L, sodium phosphate 30～50g/L, yellow soda ash 25～40g/L, trisodium phosphate 10～15g/L, water glass 5～10g/L, tripoly phosphate sodium STPP 5g/L, sodium sulfate 1g/L, EDTA disodium 1g/L, paregal O-15 has 3～5g/L, and OP-10 has 2～3g/L, JFC 5g/L, sodium lauryl sulphate 10g/L, washing assistant 20mL/L, all the other are water;
Its component of removing oil-bound distemper is: sodium hydroxide 25～250g/kg, sodium phosphate 300～320g/kg, yellow soda ash 210～300g/kg, trisodium phosphate 40～55g/kg, water glass 30～50g/kg, tripoly phosphate sodium STPP 12～20g/kg, sodium sulfate 6～10g/kg, EDTA disodium 5～10g/kg, paregal O-15 has 25～30g/kg, and OP-10 has 10～15g/kg, JFC 30～40g/kg, sodium lauryl sulphate 80～120g/kg, urotropine 1～2g/kg, polyethers 2020 has 1～3g/kg.
Further, the washing assistant among the present invention is a butyl glycol ether.
For realizing second goal of the invention, provide a kind of like this method of metal being carried out oil removal treatment.In this oil removal treatment method, with the metal degreasing clean-out system of the first goal of the invention scheme of realization; Its step is as follows:
1. earlier to be mixed into mass concentration be 5% solution with removing oil-bound distemper and water; Then, in this solution, add washing assistant again to be mixed with stand-by degreasing fluid.Washing assistant is 2: 5 with the ratio of removing oil-bound distemper.
2. the metallic surface for the treatment of oil removing with the pretreatment liquid spray is scrubbed the metallic surface then.
3. the metal that will spray, scrub with pretreatment liquid is placed in the degreasing fluid that step prepares in 1. and cleans.
4. the metal after will cleaning takes out, and is last with the water rinse that is not less than 50 ℃, eliminates metallic surface moisture.
In the present invention, except that having comprised verified sodium hydroxide, yellow soda ash and the sodium phosphate that certain oil removing cleaning performance arranged, also have various additives, as tensio-active agent, washing assistant, stablizer, inhibiter, solubilizing agent, defoamer, frostproofer etc., wherein, JFC, sodium lauryl sulphate and paregal O the-the 15th, tensio-active agent.And tensio-active agent JFC is the main active ingredient in the metal degreasing clean-out system of the present invention, is a kind of amphiphile, amphiphilic molecule.When this amphiphile, amphiphilic molecule was attached to oil-water interface, its water-wet side stretched in water, formed a skim, reduced the interfacial tension of oil-water, made oil droplet be easy to break away from the metallic surface and entered in the aqueous solution; Secondly when this amphiphile, amphiphilic molecule is attached to oil-metal interface, its hydrophobic end is adsorbed on the greasy dirt surface easily, and stretching to greasy dirt inside, the polarity water-wet side then is adsorbed on the metallic surface, forms the surfactant molecule film that one deck aligns closely between oil-metal interface.This film can weaken the sticking power of oil-metal interface, increases the wettability of metallic surface; Last this amphiphile, amphiphilic molecule can reduce water-metal interface tension force.Therefore in the process of aqueous solution soaking, bump metallic surface, the activeconstituents of tensio-active agent permeates along the interface of oil and metal, oil reservoir detachment metallic surface with the metallic surface, make oil droplet enter into the aqueous solution fast, it is not to form o emulsion that oil enters into the aqueous solution, but floats on the surface.Simultaneously because the existence of washing assistant butyl glycol ether is arranged, the metallic surface can not be difficult to clean up because of the adsorption surface promoting agent, and it can further reduce the interfacial tension between water, oil and the metallic surface three, and simultaneously, butyl glycol ether can also play solubilising and antifreeze effect.Therefore, it can also use at a lower temperature, and the temperature range during actual the use is between-5 ℃～100 ℃.
The present invention can remove the oil reservoir of metallic surface more than 99% within two minutes at normal temperatures, and it is very fast to remove speed oil.Test shows, when processing contained the iron and steel metalloid surface of slushing oil, every liter of manageable surface-area of degreasing fluid was not less than 50 square metres, because its emulsification is few, thus can be not former thereby cause deoiling effect bad because of emulsification, even lost efficacy and emit.Therefore life cycle of the present invention is long, cheap, and environmental pollution is little, efficiently, metal degreasing clean-out system fast.
The present invention is further illustrated below in conjunction with embodiment.
Embodiment
A kind of metal degreasing clean-out system, this clean-out system includes sodium hydroxide, yellow soda ash and sodium phosphate.Clean-out system of the present invention is divided into pretreatment liquid and removes oil-bound distemper two portions:
The component of its pretreatment liquid is: sodium hydroxide 3～10Og/L, sodium phosphate 30～50g/L, yellow soda ash 25～40g/L, trisodium phosphate 10～15g/L, water glass 5～10g/L, tripoly phosphate sodium STPP 5g/L, sodium sulfate 1g/L, EDTA disodium 1g/L, paregal O-15 has 3～5g/L, and OP-10 has 2～3g/L, JFC 5～8g/L, sodium lauryl sulphate 10～12g/L, washing assistant 20mL/L, all the other are water;
Its component of removing oil-bound distemper is: sodium hydroxide 25～250g/kg, sodium phosphate 300～320g/kg, yellow soda ash 210～300g/kg, trisodium phosphate 40～55g/kg, water glass 30～50g/kg, tripoly phosphate sodium STPP 12～20g/kg, sodium sulfate 6～10g/kg, EDTA disodium 5～10g/kg, paregal O-15 has 25～30g/kg, and OP-10 has 10～15g/kg, JFC 30～40g/kg, sodium lauryl sulphate 80～120g/kg, urotropine 1～2g/kg, polyethers 2020 has 1～3g/kg.
Further, used washing assistant is a butyl glycol ether in this embodiment, but does not get rid of the pharmaceutical chemicals that other help the effect of washing.
Further say the sodium hydroxide proportioning in the pretreatment liquid component: when cleaning iron and steel class workpiece, it is better to get 80～100g/L; When cleaning aluminium and alloy type workpiece thereof, it is better to get 3～5g/L; When cleaning copper and alloy type workpiece thereof, it is better to get 10～15g/L.Sodium hydroxide proportioning in the oil removing powder component: when cleaning iron and steel class workpiece, it is better to get 150～250g/kg; When cleaning aluminium and alloy type workpiece thereof, it is better to get 25～50g/kg; When cleaning copper and alloy type workpiece thereof, get 50～80g/kg.
According to above-mentioned disclosure, in conjunction with the introduction of the principle of the invention and superiority thereof, those skilled in the art can make the different metal degreasing clean-out system of various proportionings in conjunction with particular case fully from the guidance of this embodiment.
Embodiment in this embodiment sees the following form:
A kind of method of metal being carried out oil removal treatment.Present method is used is metal degreasing clean-out system among the present invention, and its step is as follows:
1. earlier to be mixed into mass concentration be 5% solution with removing oil-bound distemper and water, and then, (this example is: butyl glycol ether) to be mixed with stand-by degreasing fluid to add washing assistant again in this solution; (this example is washing assistant: be 2: 5 with the ratio of removing oil-bound distemper butyl glycol ether);
2. (can use the cylinder nylon brush) scrubbed to the metallic surface then in the metallic surface for the treatment of oil removing with the pretreatment liquid spray;
3. the metal that will spray, scrub with pretreatment liquid is placed in the degreasing fluid that step prepares in 1. and cleans;
4. the metal after will cleaning takes out, and is last with the water rinse that is not less than 50 ℃, eliminates metallic surface moisture.
Step 1. in, preparation during degreasing fluid initial temperature be 40 ℃～70 ℃ can dissolve fast fully so that remove oil-bound distemper, reach better cleaning effect, can under the arbitrary temp between-5～100 ℃, carry out during cleaning.
Checking example 1:
With the metal degreasing clean-out system of the foregoing description 1 to 9, under 25 ℃ of conditions, with the mode oil removing experiment of single-piece, periodical operation, its effect such as following table:
As said in this specification sheets superiority part, degreasing fluid among the present invention " because its emulsification is few; so can be not former thereby cause deoiling effect bad because of emulsification; in addition lost efficacy and emitted " problem, just its life cycle is long, can use repeatedly under batch, the serialization condition of production.
Under batch, the serialization condition of production, degreasing fluid is contained in degreasing tank or the grease removal tank.When the washing assistant in this degreasing fluid is reduced to 3: 10 with the ratio of removing oil-bound distemper, add washing assistant to it be 2: 5 with the ratio of removing oil-bound distemper.Under inconvenience or situation because of the production task tension, also can according to handle amount of metal what, duration of service length, observe the emulsification situation, regularly or aperiodically add washing assistant, for example: adding for the first time in degreasing tank or the grease removal tank, is to add in 40 kilograms of washing assistant/100 kilogram ratio except that oil-bound distemper.Later just can add 10 kilograms of washing assistants weekly.
When metallic substance is the iron and steel time-like, the pH of this degreasing fluid remains between 12～14; During for aluminium and alloy thereof, the pH of degreasing fluid remains between 9～10; During for copper and alloy thereof, the pH of degreasing fluid remains between 11～12.
Checking example 2:
With the metal degreasing clean-out system of the foregoing description 1 to 9, under batch, the serialization condition of production, volume is rolled thin plate remove oil test, its effect such as following table.
Claims (5)
1. metal degreasing clean-out system, this clean-out system includes sodium hydroxide, yellow soda ash and sodium phosphate, it is characterized in that, and this clean-out system is divided into pretreatment liquid and removes oil-bound distemper two portions:
The component of its pretreatment liquid is: sodium hydroxide 3～100g/L, sodium phosphate 30～50g/L, yellow soda ash 25～40g/L, trisodium phosphate 10～15g/L, water glass 5～10g/L, tripoly phosphate sodium STPP 5g/L, sodium sulfate 1g/L, EDTA disodium 1g/L, paregal O-15 has 3～5g/L, and OP-10 has 2～3g/L, JFC 5～8g/L, sodium lauryl sulphate 10～12g/L, washing assistant 20mL/L, all the other are water;
Its component of removing oil-bound distemper is: sodium hydroxide 25～250g/kg, sodium phosphate 300～320g/kg, yellow soda ash 210～300g/kg, trisodium phosphate 40～55g/kg, water glass 30～50g/kg, tripoly phosphate sodium STPP 12～20g/kg, sodium sulfate 6～10g/kg, EDTA disodium 5～10g/kg, paregal O-15 has 25～30g/kg, and OP-10 has 10～15g/kg, JFC 30～40g/kg, sodium lauryl sulphate 80～120g/kg, urotropine 1～2g/kg, polyethers 2020 has 1～3g/kg.
2. metal degreasing clean-out system according to claim 1 is characterized in that, described washing assistant is a butyl glycol ether.
3. one kind is carried out the method for oil removal treatment to metal, it is characterized in that, in this oil removal treatment method, with claim 1 or 2 described metal degreasing clean-out systems; Its step is as follows:
1. earlier remove oil-bound distemper and water to be mixed into mass concentration be 5% solution with described, then, again in this solution the described washing assistant of adding to be mixed with stand-by degreasing fluid; Washing assistant is 2: 5 with the ratio of removing oil-bound distemper;
2. the metallic surface for the treatment of oil removing with described pretreatment liquid spray is scrubbed the metallic surface then;
3. the metal that will spray, scrub with pretreatment liquid is placed in the degreasing fluid that step prepares in 1. and cleans;
4. the metal after will cleaning takes out, and is last with the water rinse that is not less than 50 ℃, eliminates metallic surface moisture.
4. according to claim 3 is described metal is carried out the method for oil removal treatment, it is characterized in that, in batches, under the serialization condition of production, described degreasing fluid is contained in degreasing tank or the grease removal tank; When the washing assistant in this degreasing fluid is reduced to 3: 10 with the ratio of removing oil-bound distemper, add washing assistant to it be 2: 5 with the ratio of removing oil-bound distemper; When metallic substance is the iron and steel time-like, the pH of this degreasing fluid remains between 12～14; During for aluminium and alloy thereof, the pH of degreasing fluid remains between 9～10; During for copper and alloy thereof, the pH of degreasing fluid remains between 11～12.
5. described metal is carried out the method for oil removal treatment according to claim 3 or 4, it is characterized in that, step 1. in, the initial temperature when preparing described degreasing fluid is 40～70 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2008100693654A CN101225522B (en) | 2008-02-15 | 2008-02-15 | Metal deoiling cleaning agent and deoiling method thereof |
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| CN2008100693654A CN101225522B (en) | 2008-02-15 | 2008-02-15 | Metal deoiling cleaning agent and deoiling method thereof |
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| CN101225522A CN101225522A (en) | 2008-07-23 |
| CN101225522B true CN101225522B (en) | 2010-04-14 |
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