CN87103015A - Rust-removing and-preventing liquid for iron and steel - Google Patents
Rust-removing and-preventing liquid for iron and steel Download PDFInfo
- Publication number
- CN87103015A CN87103015A CN87103015.2A CN87103015A CN87103015A CN 87103015 A CN87103015 A CN 87103015A CN 87103015 A CN87103015 A CN 87103015A CN 87103015 A CN87103015 A CN 87103015A
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- rust
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- cleaning
- iron
- derusting
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- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention relates to a kind of steel derusting rust-proofing method.
It is antirust that the present invention adopts the formulated rust-removing and antirusting agent of phosphoric acid, silicate cement and water glass to carry out steel derusting, and rust cleaning speed is fast, effective.Can generate one deck stable " priming paint " at steel surface after the rust cleaning, the steel and iron member after rust cleaning, the rust-proofing time under the condition is 2 months in the open, indoor be 6-12 months when not making moist.Cost is low, simple and easy to do, pollution-free, compare with hand cleaning and improve 30 times of work efficiency.And having multiple function, is a kind of ideal rust-removing and-preventing liquid for iron and steel.
Description
The present invention relates to a kind of steel derusting rust-proofing method, be applicable to the derusting rust-proofing of steel and iron member, be specially adapted to boats and ships, machinery, vehicle, pipeline, bridge are carried out in the technology of secondary rust removal.
The rust cleaning of derusting by sandblast and strong acid pickling was mainly adopted in the steel surface rust cleaning in the past.The derusting by sandblast investment is big, cost height, big, the contaminate environment of labour intensity; And strong acid pickling easily produces excessive erosion.Often generate the secondary rust after the pickling.A large amount of steel equipment long-term exposure are in air, at a terrific speed by corrosion.At present, resemble the secondary rust removal of boats and ships, pipeline, bridge etc., still rest on the hand cleaning stage, not only work efficiency is low, and it is of poor quality to eliminate rust.
" steel derusting, the passivation novel process " in the CN85104742 of Patent Office of the People's Republic of China, announced adopt hydrochloric, urotropine, 12 or the liquid of Sodium palmityl sulfate, TX-10, materials such as 6501 as rust cleaning liquid, be passivating solution with the liquid that contains unslaked lime, Sodium Nitrite, urotropine.Rust cleaning liquid can eliminate the rusty scale of steel surface in 3-5 minute, can generate one deck passive film at steel surface again after the passivating solution effect, and the rust cleaning quality is good, can under room temperature (10 °-40 ℃) condition of any humidity, use, labour intensity is low, and is free from environmental pollution, and the rust cleaning expense is 0.2 yuan/meter
2But, must prepare rust cleaning liquid and passivating solution respectively, also need shape according to steel derusting goods member, size needs, set up corresponding rust cleaning pond, clean water basin, passivation pond, and only can deposit in air through the steel product of rust cleaning Passivation Treatment and promptly to begin long secondary in tens days and become rusty.
A kind of B205-derusting phosphating treatment agent (seeing this factory's specification sheets) that adopts Guangdong Jiangmen system lacquer factory to produce carry out the antirust method of steel derusting with the rust remover that contains phosphoric acid and an amount of organic acid, dihydrogen phosphate, high-efficient corrosion inhibitor, membrane-forming agent, tensio-active agent and anti-sagging agent, the corrosion of steel surface hardening oxidation skin and various degree is removed.And the excellent cured film of formation, three-waste free pollution.But rust cleaning was about 5 minutes-3 hours at the after drying time, and steel product after treatment only has 3-7 days antirust power outdoor, indoor be about 2 months.
The object of the present invention is to provide a kind of more cost-effective, the iron rust and rapid oxidation of zone of oxidation that can make steel surface.Generate one deck " priming paint " stable, that the rust-proofing ability is strong simultaneously, and simple to operate, convenient-to-running derusting rust-proofing method.
The present invention adopts the rust-removing and antirusting agent that contains phosphoric acid, silicate cement and water, and its proportioning is: phosphoric acid 50～70%, and silicate cement 10～15%, surplus is a water.
Phosphoric acid is poured in the container of a heatproof, oozed clear water, this moment, temperature raise, when treating that temperature drops to below 50 ℃, slowly put into silicate cement, park after 48 hours and can obtain rust-removing and antirusting agent, but also need before use suitably to add clear water according to the corrosion situation of steel and iron member.
With hairbrush rust-removing and antirusting agent is brushed to the surface of being with the rust goods, iron rust is oxidized to water and another kind of inorganic salt, and after the water evaporates, remaining inorganic salt then stick to steel surface securely, become one deck ideal " priming paint ".This layer " priming paint " sturdy construction, good insulation preformance, stability is strong, and high temperature resistant, acid and alkali-resistance makes steel surface no longer form " microbattery ".So can shield to iron and steel.
In order to increase the thickness of this layer " priming paint ", add water glass again in the rust-removing and antirusting agent and can make effect better, its proportioning is: phosphoric acid 50～70%, silicate cement 10～15%, water glass 10%, surplus is a water.
Major advantage of the present invention is that rust cleaning speed is fast, and is effective.With hairbrush rust-removing and antirusting agent is coated in the rusty scale surface, (dry up fully and be no more than 1 hour) rust is promptly melted only to need 15-30 minute.Because the surface generates stable " priming paint " of one deck, can not get rusty again in 2-3 month in the time of can making steel product in the open.Under indoor moisture free situation, can not get rusty again in 6～12 months.Can be widely used in the preceding pre-treatment of steel and iron member spraying and the secondary rust removal of various steel equipments just in use, also can be used for various steel part (pulling material, section bar and tubing) warehouse-in preceding " phosphatize phosphate coat " and handle.Also can be used to remove the rust spot on verdigris and the chromium coating, and can when soldering, replace hydrochloric acid and solder paster.Equipment is simple, easy to use, and handling except that " phosphatize phosphate coat " needs the heated pool, and other all only need directly be brushed with brush and get final product, and cheap, only 0.15 yuan/meter of rust cleaning expense can be carried out under normal temperature (0-50 ℃).Pollution-free, can lower labour intensity greatly, compare with hand cleaning and improve 30 times of work efficiency.
Embodiment 1:
Add clear water 25 grams with phosphoric acid 60 grams, put into 15 gram silicate cements more slowly, deposit and to obtain 100 gram rust-removing and antirusting agent after 48 hours.
With hairbrush rust-removing and antirusting agent is brushed to the rust face, rust promptly melts voluntarily after 15 minutes, the time that the surface is dry fully: when room temperature is 40 minutes in time more than 20 ℃, room temperature is 60 minutes in time below 10 ℃.Temperature limitation is in 0 ℃～50 ℃ during operation.
Embodiment 2:
Phosphatize phosphate coat is handled.With 50 kilograms of phosphoric acid, add 25 kilograms in clear water after, put into 15 kilograms of silicate cements slowly, add 10 kilograms of water glass again, can obtain 100 kilograms of rust-removing and antirusting agent.
With pending steel and iron member brushing one deck rust-removing and antirusting agent, after 5～10 minutes, its surface oxide layer and rust all melt, and then steel part are placed 80 ℃ warm water to clean.With rust-removing and antirusting agent brushing one deck equably, processed surface will be iron gray after about 30 minutes, and be smooth smooth, can put preservation in storage, can not get rusty in moisture free situation next year again.
Embodiment 3:
The processing on metallizing top layer with phosphoric acid 70 grams, adds clear water 20 grams, puts into 10 gram silicate cements more slowly, deposits and can get 100 gram rust-removing and antirusting agent after 48 hours.
With hairbrush rust-removing and antirusting agent is painted on plating piece, with 80～100 ℃ warm water cleaning,, must or be coated with rust-removing and antirusting agent with the perching knife cleaning and removes the assorted dirt in surface clean after 15 minutes as also having the blackspot pit this moment.Brushed rust-removing and antirusting agent again one time before dropping into the dissolving metal groove, treat the not dried dissolving metal groove that drops into immediately, copper facing, tin or chromium plating all can.
Claims (2)
1, a kind of usefulness rust-removing and antirusting agent of containing phosphoric acid carries out the antirust method of steel derusting, it is characterized in that its proportioning is: phosphoric acid 50～70% with the rust-removing and antirusting agent that contains silicate cement.Silicate cement 10～15%.Surplus is a water.
2,, it is characterized in that with the rust-removing and antirusting agent that contains water glass by the described steel derusting rust-proofing method of claim 1.Its proportioning is: phosphoric acid 50～70%, and silicate cement 10～15%, water glass 10%, surplus is a water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87103015.2A CN1003126B (en) | 1987-06-09 | 1987-06-09 | Rust-removing and-preventing liquid for iron and steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87103015.2A CN1003126B (en) | 1987-06-09 | 1987-06-09 | Rust-removing and-preventing liquid for iron and steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87103015A true CN87103015A (en) | 1988-11-30 |
| CN1003126B CN1003126B (en) | 1989-01-25 |
Family
ID=4814224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87103015.2A Expired CN1003126B (en) | 1987-06-09 | 1987-06-09 | Rust-removing and-preventing liquid for iron and steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1003126B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560512A (en) * | 2011-12-30 | 2012-07-11 | 大连三达奥克化学股份有限公司 | Chariot body forged steel part cleaning skin treating agent and production method thereof |
-
1987
- 1987-06-09 CN CN87103015.2A patent/CN1003126B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560512A (en) * | 2011-12-30 | 2012-07-11 | 大连三达奥克化学股份有限公司 | Chariot body forged steel part cleaning skin treating agent and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1003126B (en) | 1989-01-25 |
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