CS259222B1 - A method of continuously hydrophilizing steel for the production of aerated concrete - Google Patents
A method of continuously hydrophilizing steel for the production of aerated concrete Download PDFInfo
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- CS259222B1 CS259222B1 CS857523A CS752385A CS259222B1 CS 259222 B1 CS259222 B1 CS 259222B1 CS 857523 A CS857523 A CS 857523A CS 752385 A CS752385 A CS 752385A CS 259222 B1 CS259222 B1 CS 259222B1
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Abstract
Účelom rešenia je vytvornie vhodného povrchu ocele 11 373 ťahanej za studená na aplikáciu antikoróznych vodou rieditelných nátěrových hmót. Uvedeného účelu sa dosiahne mechanickým rozrušením filmu mastiva, hydrolýzou mastiva kyselinou zo skupiny zahrňujúcej kyselinu citrónovú, kyselinu šťavělovú, kyselinu vinnú, kyselinu fosforečnú, alebo ich zmesami a termickým rozkladom produktov hydrolýzy mastiva.The purpose of the solution is to create a suitable surface of cold-drawn steel 11 373 for the application of anti-corrosion water-based coatings. The stated purpose is achieved by mechanical disruption of the lubricant film, hydrolysis of the lubricant with an acid from the group including citric acid, oxalic acid, tartaric acid, phosphoric acid, or mixtures thereof and thermal decomposition of the products of hydrolysis of the lubricant.
Description
I Vynález sa týká hydrofilizácie povrchu ocele ťahanej za studená, používanej na výrobuThe invention relates to the hydrophilization of the surface of a cold-drawn steel used for production
I pórobetonu. Hydrofilizácia sa uskutoční pomocou mechanického rozrušenia povrchu mastiva, chemickou hydrolýzou kyselinami a tepelným rozkladom produktov hydrolýzy mastiva.I aerated concrete. Hydrophilization is accomplished by mechanical disruption of the lubricant surface, chemical hydrolysis by acids and thermal decomposition of the hydrolysis products of the lubricant.
V súčasnosti sa na výrobu výstuži do pórobetonu používá prevážne ocel 10 216 válcovaná za tepla. Před aplikáciou protikoróznej ochrany výstuži je podía ČSN 03 8221 a ČSN 73 1343 potřebné túto ocel očistit. Kontinuálně mechanické čistenie nie je vyriešené pre celý sortiment vyrábaných ocelí. Nie je k dispozícii ani vhodné kontinuálně chemické čistenie ocele. Morenie hotových zvarovaných sieti nepripúšťa ČSN 03 8221.At present, mainly hot rolled steel 10 216 is used for the production of aerated concrete reinforcement. According to ČSN 03 8221 and ČSN 73 1343, it is necessary to clean this steel before applying corrosion protection of the reinforcement. Continuously mechanical cleaning is not solved for the entire range of manufactured steels. There is also no suitable continuous chemical steel cleaning. The pickling of finished welded mesh is not permitted by ČSN 03 8221.
Vzhíadom na to, že čistenie ocele 10 216 je technicky aj ekonomicky náročné, uvažuje sa nahradit ju ocelou 11 373 tahanou za studená. Povrch tejto ocele je bez okují a koróznych splodín. Pri jej výrobě sa však používajú mastivá (priemyslové mýdlo, stearan vápenatý, profil S, atd.), ktoré spósobujú hydrofóbnosť povrchu. Pretože na protikoróznu ochranu výstuži do pórobetonu sa používajú vodou rieditelné disperzně nátěrové hmoty, je potřebné zabezpečit zmáčatelnost povrchu ocele vodou. Bežne používané spósoby hydrofilizácie nie sú na tieto účely dostatočne účinné a rýchle. Uvedené nevýhody odstraňuje predmet tohto vynálezu.Since cleaning of 21616 steel is both technically and economically demanding, it is contemplated to replace it with cold drawn steel 11,373. The surface of this steel is free of scale and corrosive fumes. However, lubricants (industrial soap, calcium stearate, S profile, etc.) are used to make the surface hydrophobic. Since water-borne dispersion paints are used for the corrosion protection of the aerated concrete reinforcement, it is necessary to ensure the wettability of the steel surface with water. Commonly used methods of hydrophilization are not sufficiently effective and fast for this purpose. These disadvantages are overcome by the present invention.
Podlá vynálezu sa hydrofilizácia ocele 11 373 ťahanej za studená dosiahne kontinuálnym spósobom tak, že vrstva mastiva na povrchu ocelového drótu sa mechanicky naruší, potom sa pri teplotách od 40 do 90 °C pósobi 5 až 22 %-nou kyselinou zo skupiny zahrňujúcej kyselinu citrónová, kyselinu štavelovú, kyselinu vinnú, kyselinu fosforečnú, alebo ich zmesami. Ďalej drót prechádza zónou vyhrievanou horúcimi spalinami o teplote 600 až 1 200 °C. Výhodou tohto postupu je podstatné urýchlenie rozkladu mastiva a v dósledku toho zníženie spotřeby energie.According to the invention, the hydrophilization of the cold-drawn steel 11 373 is achieved in a continuous manner such that the lubricant layer on the surface of the steel wire is mechanically disrupted, then treated at temperatures between 40 and 90 ° C with 5-22% citric acid. oxalic acid, tartaric acid, phosphoric acid, or mixtures thereof. Further, the wire passes through a hot-gas heated zone of 600 to 1200 ° C. The advantage of this process is a substantial acceleration of lubricant decomposition and consequently a reduction in energy consumption.
Využitie predmetu vynálezu je zřejmé z nasledujúcich príkladoch.The use of the subject matter of the invention is apparent from the following examples.
Postup hydrofilizácie ocele znázorňuje schéma, vid obr. 1.The process of hydrophilizing the steel is shown in FIG. First
PřikladlEXAMPLE
Drót, ktorý sa odvíja zo zvitku 2 prechádza predrovnávacím zariadením 2 cez systém ocelových rotačných kief 2» ktoré mechanicky porušia povlak mastiva na jeho povrchu. Hydrolýza mastiva prebieha pósobením 10 až 15 %-nej kyseliny fosforečnej. Kyselina sa nanáša na drót v postrekovaoej komoře 2· K tepelnému rozrušeniu produktov hydrolýzy mastiva dochádza v prúde horúcich spalin pósobiacich na drót, ktorý sa posúva rýchlosťou 0,5 až 1 m.s-^ v osi válcového priestoru 5 vyhrievaného systému plynových horákov. Takto upravený .drót sa po rovnaní a střihaní použije na výrobu výstuži do pórobetonu. Jeho povrch je dokonale zmáčaný vodou v zmysle požiadaviek ČSN 73 1343, teda vhodný pre nanášanie vodou rieditelných antikoróz nych disperzných farieb.The wire which is unwound from the roll 2 passes through the pre-balancing device 2 through a system of steel rotary brushes 2 which mechanically break the coating of lubricant on its surface. The hydrolysis of the lubricant is effected by the action of 10-15% phosphoric acid. The acid is applied to the wire in the chamber postrekovaoej 2 · K thermal disruption of hydrolysis of lubricant takes place in a stream of hot combustion gases acting on the wire that is moving at a rate of 0.5 to 1 ms - ^ in the axis of the cylindrical space 5 of the heated gas burners. After the straightening and shearing, the treated wire is used for the production of aerated concrete reinforcement. Its surface is perfectly wetted with water according to the requirements of ČSN 73 1343, ie suitable for application of water-dilutable anticorrosive dispersion paints.
Přiklad 2Example 2
Drót, ktorý sa odvíja zo zvitku 2 prechádza predrovnávacím zariadením 2 qez systém rotačných kief 2» ktoré mechanicky porušia povlak mastiva na jeho povrchu. Hydrolýza mastiva prebieha pósobením 10 %-nej kyseliny šťavelovej pri teplote 60 °C. Kyselina sa nanáša na drót v postrekovaoej komoře 2· K tepelnému rozrušeniu produktov hydrolýzy mastiva dochádza v prúde horúcich spalin pósobiacich na drót, ktorý sa posúva rýchlosťou 0,5 až 1 m.s-^ v osi válcového priestoru 2 vyhrievaného systémom plynových horákov. Takto upravený drót sa po rovnaní a střihaní použije na výrobu výstuži do pórobetonu. Jeho povrch je dokonale zmáčavý vodou v zmysle požiadaviek ČSN 73 1343, teda vhodný pre nanášanie vodou rieditelných antikoróznych disperzných farieb.The wire which is unwound from the coil 2 passes through a pre-alignment device 2 through a rotating brush system 2 which mechanically breaks the coating of lubricant on its surface. The lubricant is hydrolyzed by multiplying 10% oxalic acid at 60 ° C. The acid is applied to the wire in the chamber postrekovaoej 2 · K thermal disruption of hydrolysis of lubricant takes place in a stream of hot combustion gases acting on the wire that is moving at a rate of 0.5 to 1 ms - ^ in the axis of the cylindrical chamber 2 of the heated gas burner system. The wire thus treated is used for the production of aerated concrete reinforcement after straightening and shearing. Its surface is perfectly wettable with water according to the requirements of ČSN 73 1343, ie suitable for application of water-dilutable anticorrosive dispersion paints.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS857523A CS259222B1 (en) | 1985-10-21 | 1985-10-21 | A method of continuously hydrophilizing steel for the production of aerated concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS857523A CS259222B1 (en) | 1985-10-21 | 1985-10-21 | A method of continuously hydrophilizing steel for the production of aerated concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS752385A1 CS752385A1 (en) | 1988-02-15 |
| CS259222B1 true CS259222B1 (en) | 1988-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS857523A CS259222B1 (en) | 1985-10-21 | 1985-10-21 | A method of continuously hydrophilizing steel for the production of aerated concrete |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS259222B1 (en) |
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1985
- 1985-10-21 CS CS857523A patent/CS259222B1/en unknown
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| Publication number | Publication date |
|---|---|
| CS752385A1 (en) | 1988-02-15 |
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