DE1771677B2 - METHOD AND DEVICE FOR APPLYING AN ENAMEL-LIKE COATING LAYER, WHICH MAY CONTAIN AN CORROSION PROTECTION AGENT, AS AN CORROSION PROTECTION LAYER ON METALLIC ROLLED MATERIAL - Google Patents

Description

j cu firriiirhf- roller groove 3 like a tunnel

with a reducing agent, ζ. B. reducing the dar ^a ^ J ^ Sammer 4 with a Einrich gases to treat. f ^be f 1 SSn from EioaUHerungsmitteui and

According to a further teaching of the invention, t ^ g ^^ fSionsschutz- and / or Redukauf the rolling stock reducing substances, preferably ^ f ^^ hSdlungskammer 4 is preferably metals, or metal oxides together only 5 öonsmitte \ ^ ι ™ ^ ^ j _treckler

The enamel-forming substances in fine distribution are given to P ^ ^. ^ _{Wakgm 3} brought and brought to the rolling stock through its warm ^box ^ ⁿ ^^ SVer device for applying Ln melts, wherefrom d »over- ^^ tooddt ^ fc ^, _{if necessary, K} traction layer is formed. · _Β «3Τ and / or reducing agent, according to

As far as the email-like coating layer is not ^'51 P ⁰⁵⁵⁰ ^ Jf' J ^^ ut indicated cooling section 5. special corrosion protection agent contains, it may ^ "" f ^ EScLe 6 downstream, be advantageous behind that immediately behind the occurring eme ^ "^ ρ ^ ^ η mechanical descaling of conventional Korroden applied email- ⁵ ° ^ "^ Λ ^ ΐη (plastics, paints, lacquers) similar coating layer only for the time as corrosion protection agents ^ u

sion protection layer, during which the 15 betaue η _to apply the enamel

Rolled stock still tends to scaling, but after that it is hard to perform. ^ _Us anti-corrosion

the coating layer - e.g. B. with the help of Richt- ^^^ dÄuktoSSS consists of on the rolling machines, through which the rolling stock «^ carried out ^^^ S ^ sen 8 for the up aerosol fine, is - to be removed from the rolling stock and, in place of ^^^ ^^ aaü and possibly the removed enamel-like coating layer, mog- * ° J ^md ^^ "^ unoV or reducing agent with at least immediately after removing the email- ^" ^^ 75 ^ 9 10, the carrier gas _e 'n similar coating layer on the Rolling stock has to apply a corrosion protection layer known to itself to g ^ g ^^^ uzerendes gas or air. inert gas, a reauz

The enamel-like coating layer that can be inventive. ^ _{ms in particular the} F i g. 2

according to the rolling stock as close as possible behind »5 Im euizanra '' _{n for the} enamelling

the me- occurring in a rolling stand already shows a Vormsc _{t osionsschutz. and} / _or

mechanical descaling is applied, ^m '«™ can be provided, which is via a trigger. B. formed from a fine powdery mixture fjJ ^ g ^ X ^ blower 9 is connected. those made up of SiO ₂ , Al ₂ O ₃ , Fe O Cf>, M *> «mje line ^ 2 to ^ J ^{6 of} _the loosening of the

There are compounds of Na, K and B, e.g. B. at 30 The first u_eo ™ enamelling agent and

5.47 parts by weight of SiO _2, 1.24 Gewichtsantcilen mixture ^au V ^'nk ° _r ™ J _nsschutz. Und'oder reductive-Al ₂ O ,, 0:48 parts by weight Fe ₂ O _3, 24.1 wt% ^ f ^^ SSSntac 9 downstream is "anteiffening CaO, 1.71 parts by weight MgO, oil Ge °" ™ _G S; _which serves to promote the weight parts Na, 0.42 parts by weight K and ^^ <* $ ££ I _n fine distribution , 8 parts by weight B. 35 gj ^ chΐΐ treatment chamber 4 is a

Incidentally, the composition of the oriented * ß ^ * ^ T ^ & a compressed air supply 14 ^ starting material is "13 _anges to ^ d 'e ^ chlossen to form the emailähnhchen FJrderl. Coating layer according to the respective conditions. ™ _r ^ ^r ^ / Ä _usg e3tung the delivery line 13 is In the following, the inventive encryption ^D _p ^u J ^ch _p. ^ F _u ^ agents and optionally the drive to hand of a device for carrying 40 the _m ^E ™ is ^^ f ™ _or reducing agents that explain this process in more detail; in the ^^^^ f ^ ^ ffg chvdndigkeit imparted, so drawing that contains merely an exemplary embodiment of ^Ta ^ ^ K ^C ™ 3L rolling acted upon on all sides 3 - - ■ "." the """"

^M iig ^ei a pre- f perspective Daisvellung Shlagt

correct to carry out the inventive 45 ^^ jj ^ ffi ^^ hwnÄiichlich «you

Procedure on a rolling mill and. ^ ί Metals in fine powder form in question.

Fig. 2 is a side view of the device after «^^^ bSfebetn measures

"^ Ιη the device shown in the figures is used F ^^^^ fXJj ^ SäSZ ^ to apply eh.er email-like if necessary 50 m the day ^ l ^ n _Verunderun g

a coating layer containing an anti-corrosive agent to be applied as an anti-corrosive layer on a metallic layer; ^h ^ ernde ^^ ^ _Walzgu f _{es 3} , _{at which the}

Rolling stock. δ "Ξηηο the coating layer takes place, is about

In the case of a rolling formation of the uoenniB ^. ^ ^^^

road is behind the last roll stand 1 55 between _f 800 and "W ^ ¹ e ne the means of transport 2 for the rolling stock 3 and final rolling temperatures.

1 sheet of drawings

Claims (7)

The invention relates to a method for applying patent claims: supplying an enamel-like coating layer, optionally containing a corrosion protection agent, as a 1. Process for applying an enamel-like corrosion protection layer to metallic rolling stock, borrowed, optionally a corrosion protection agent 5, in particular on wire containing coating layer as a corrosion method for applying an enamel-like, Protective layer on metallic rolling stock, in particular - possibly containing a corrosion protection putty - the other on wire, characterized by the coating layer as a corrosion protection layer net that the coating layer on the rolled metal are known in different variants, Immediately behind the in one, pre- io When bright annealing or other heat treatment preferably the last roll stand anyway due to metals it is z. B. known (see. The occurring mechanical descaling - German patent specification 312947 and the USA. is brought. script 3 037 878), to prevent corrosion 2. The method according to claim 1, characterized in applying an enamel-like coating layer, indicates that the rolling stock is known according to the mechanical 15 it is also known (cf. the German Auslegeschrift niche descaling and before application 1 266 101), for protective surface treatment of the coating layer with a reducing agent, of continuously cast products during continuous casting - ζ. B. reducing gases is treated. after cooling - the still hot strand with 3. The method according to claim 1 or 2, characterized in that an enamel-like coating layer, characterized in that on the rolling stock reduction 20 it is also known (see. The USA.-Patent medium, preferably metals or metal oxides 3 181 326), drawn Wire, which is used for electrical purposes together with the enamelling agents and consequently has to be insulated.
and the coating layer is formed therefrom 35 Incidentally, it has long been known to use metal. Iisches rolling stock as a corrosion protection layer 4. Device for carrying out the process coating layer made of zinc or plastic according to one of claims 1 to 3, marked. First, the one on the rolling stock is referred to through a layer of scale that can be found behind a roll stand (1) through pickling or sand, the means of transport (2) for the 30 blasting is removed and then the coating is rolled (3) and the rolling stock thereon is a layer of zinc or plastic applied. That is (3) a tunnel-like surrounding treatment chamber complex and can be used during operation of a (4) Do not perform with a device for applying rolling mills, rather make enamelling agents and, if necessary, corrosion protection and / or reducing agents at special workplaces. 35 required. 5. The device according to claim 4, characterized in that the invention is based on the object, that the treatment chamber (4) admit, as the method described above is designed as a tube or box. is to be carried out in detail so that the 6. Apparatus according to claim 4 or 5, brought along similar to email, possibly a corrodurch characterized in that the device has a coating layer containing an anti-ionic agent Application of enamelling agents and the rolling stock adheres particularly well. optionally corrosion protection and / or Reduk- The invention consists mainly in that the from the coating layer directed at the rolling stock (3) onto the rolling stock as directly as possible. Nozzles (8) for the up to aerosol-fine, fluidized bar behind the in one, preferably the last Enamelling agent and possibly Kor- 45 roll stand anyway occurring mechanical en- anti-corrosion and / or reducing agent with scaling is applied. The invention uses the ordered fans (9,10) consists. Fact that in a roll stand in general 7. Device according to one of claims 4 easily a mechanical descaling einbis 6, characterized in that an occurrence and, as it were, conserves the in this state advice container (11) for the enamelling agent and 50 rolling stock with the enamel-like coating layer that if necessary, anti-corrosion and / or reductive agents immediately following this descaling is brought via a drain line (12). The coating layer thus applied First blower (9) for loosening the adheres to the rolling stock particularly well, which presumably enamels and possibly corro- Hch is due to the fact that the one new anti-sion protection or reducing agent and a coating layer that prevents scaling Second blower (10) for the promotion of the enamel is applied the moment in which the lierungsmittcl and possibly corrosion-mechanical descaling has taken place, of protective and / or reducing agent in fine form this mechanical descaling ago the division through a conveying line (13) to the surface of the rolling stock is relatively rough, which leads to the action chamber (4) are connected downstream and 60 good adhesion between the coating layer and that leads in the area of the treatment chamber (4) in the rolling stock. the delivery line (13) a Venturi nozzle. (15) with As far as the enamel-like coating layer is a Compressed air supply (14) is arranged, which contains the special anti-corrosion agent, this can Enamelling agents and optionally the Kor- z. B. be zinc, especially in the form of zinc anti-corrosion and / or reducing agents the 65 borate. gives the required impact speed. In special cases it can be useful the rolling stock after mechanical descaling and before the coating is applied