CS268563B1 - Steel ’for enamelling - Google Patents

Steel ’for enamelling Download PDF

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Publication number
CS268563B1
CS268563B1 CS872095A CS209587A CS268563B1 CS 268563 B1 CS268563 B1 CS 268563B1 CS 872095 A CS872095 A CS 872095A CS 209587 A CS209587 A CS 209587A CS 268563 B1 CS268563 B1 CS 268563B1
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Czechoslovakia
Prior art keywords
steel
enamelling
manganese
titanium
enamel
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CS872095A
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Czech (cs)
Slovak (sk)
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CS209587A1 (en
Inventor
Ondrej Ing Csc Kozar
Arpad Ing Csc Simon
Alojz Ing Csc Holly
Original Assignee
Kozar Ondrej
Simon Arpad
Holly Alojz
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Application filed by Kozar Ondrej, Simon Arpad, Holly Alojz filed Critical Kozar Ondrej
Priority to CS872095A priority Critical patent/CS268563B1/en
Publication of CS209587A1 publication Critical patent/CS209587A1/en
Publication of CS268563B1 publication Critical patent/CS268563B1/en

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Abstract

0cel' pre smaltovanie, vyráběná najma kontinuálnym odlievaním, o cheaickom zložení v haotnostnom vyjádření do 0,04 % uhlíka, do 0,04 % hliníka, 0,15 až 0,35 % mangánu, do 0,030 % fosforu, do 0,025 % síry, do 0,06 % meči, do 0,03 % arzénu, do 0,025 % cínu, do 0,06 % chrómu a do 0,15 % titanu aa vyznačuje tým, že obsah titanu v oceli je najmenej polovice hodnoty zodpovedajúcej poměru obsahu síry k mangénu v oceli.Enamelling steel, produced mainly by continuous casting, with a chemical composition in terms of volume of up to 0.04% carbon, up to 0.04% aluminium, 0.15 to 0.35% manganese, up to 0.030% phosphorus, up to 0.025% sulphur, up to 0.06% copper, up to 0.03% arsenic, up to 0.025% tin, up to 0.06% chromium and up to 0.15% titanium, characterised in that the titanium content in the steel is at least half the value corresponding to the ratio of sulphur to manganese in the steel.

Description

Vynález nn týká ocelo pre smáltovnnie, vyrábanej najma kontinuálnym odliovaním a rieši znbezpočonio dobrých povrchových vlastností plechov pre vypalovanie smaltu pri vyššej smaltovacej teplote, β možnoetou predúpravy a jednovrstvého smaltu a bez ovplyv nenina tržnosti a pevnosti pře lisovanie.The invention relates to steel for enamelling, produced in particular by continuous casting, and solves the poor surface properties of enamel firing sheets at a higher enamel temperature, β can be pretreated and single-layer enamel, and without affecting the marketability and compression strength.

Běžné hlbokothžné ocele určené pre smaltovanie sposobujú pri výrobnom procese smaltovania povrchové chyby, ktoré ea prejavujú aj po smaltovaní. Spoločnou příčinou chýb smaltu eú perlitické hnlezda při povrchu plechu. Uhlík pri vypalovaní emaltu sa uvolňuje z miest obohatených na obsah perlitickej zložky, reaguje s kyslíkom a tvoří CO, ktorý difunduje do smaltu a tým dochédza ku vzniku opisaných chýb. Zvýšené obsahy uhlíka v blízkosti rozhrania kov-smalt sú potenciálnymi zložkami aj chýb typu rybích Supin.Conventional deep-enamel steels intended for enamelling cause surface defects in the enamel production process, which are manifested even after enamelling. A common cause of enamel defects eu is a pearlitic look at the sheet surface. The carbon during the firing of the emalt is released from the sites enriched for the content of the pearlitic component, reacts with oxygen and forms CO, which diffuses into the enamel and thus the described errors occur. Increased carbon contents near the metal-enamel interface are potential constituents of Fish Supin errors.

Úlohou vynálezu je vytvoriť podmienky pre to, aby sa zabránilo zhlukovaniu perlitickej zložky do ostrovčekov, a to najma pri zvýženom obsahu uhlíka. Tieto podmienky by čiastočne plnili ocele upokojené; nepoužívajú sa vjak najmá pře nepripravenosť vhodných smaltov. Napriek niektorým nedostatkom hlbokoťažných neupokojených oceli, je úlohou tieto vlastnosti obmeziť a to najmá znížením podielu a vztahov medzi jednotlivými prvkami v oceli, najmá zníženie obsahu uhlíka a poměru titanu k ostatným zložkám, a to s využitím možnosti technologií pri kontinuálnom odlievaní oceli.SUMMARY OF THE INVENTION It is an object of the present invention to provide conditions for preventing aggregation of the pearlitic component into islets, particularly at elevated carbon content. These conditions would partially satisfy the calm steels; however, they are not used in particular because of the unpreparedness of suitable enamels. Despite some shortcomings of deep-drawn, unsettled steel, the task is to limit these properties, notably by reducing the proportion and relationships between the elements in the steel, not least by reducing the carbon content and the ratio of titanium to other components, using the possibility of continuous steel casting technologies.

Uvedené nedostatky odstraňuje a vytýčený problém rieši ocel pře smaltovanie vyróbaná najmá kontinuálnym odlievanim o základnom chemickom zložení v hmotnostnom vyjádření do 0,04 % uhlíka, do 0,04 % hliníka, do 0,030 % fosforu, do 0,025 % síry,The above-mentioned deficiencies are eliminated and the problem is solved by steel pre-enamelling made mainly by continuous casting with basic chemical composition up to 0,04% carbon, 0,04% aluminum, 0,030% phosphorus, 0,025% sulfur,

0,15 až 0,35 % mangánu, ako aj stopových prvkov ako médi, arzénu, cínu a chrómu a na báze do 0,15 % titanu podlá vynálezu. Podstata vynálezu spočívá v tom, že obsah titanu v oceli je najmenej polovica hodnoty, zodp‘ovedajúcej poměru obsahu síry ku mangánu.0.15 to 0.35% of manganese as well as trace elements such as media, arsenic, tin and chromium and based on up to 0.15% of titanium according to the invention. The principle of the invention is that the titanium content of the steel is at least half the value corresponding to the ratio of sulfur to manganese.

Výhody ocele podlá vynálezu sú hlavně v zabezpečení dobrej smaltovatelhosti, vysokej ťažnosti a v nízkej anízotrópií pevnostných a plastických vlastností plechov z nej. Plechy možno smaltovat! pri vySSích teplotách a kratších časoch ako u neupokojených ocelí ostatných, pre možnosť vyššej smaltovacej teploty bez vzniku uvedených vád. Vytvorenie jemných, rovnoměrně rozložených precipitátov, umožňuje kvalitně nanášanie jednovrstvých smaltov, připadne v kombinácii a predúpravou plechov nořením a chemickým niklováním.The advantages of the steel according to the invention are mainly in ensuring good enamelling properties, high ductility and low anisotropy of the strength and plastic properties of the sheet metal. Plates can be enameled! at higher temperatures and shorter times than the restless steels of other steels, because of the possibility of higher enamel temperature without the occurrence of the mentioned defects. The formation of fine, evenly distributed precipitates allows for high-quality application of single-layer enamels, possibly in combination and pre-treatment of sheets by dipping and chemical nickel plating.

Příklad uskutočnenia ocele podťa vynálezu:Example of steel according to the invention:

Ocel' odliata na zariadení pře plynulé odlievanie má hmotnostně zloženie:The steel cast on the continuous casting machine has a mass composition of:

C 0,03 %, Mn 0,23 %, P 0,019 %, S 0,016 %, 0,025 %, Ti 0,11 %, poměr S:Mn = 0,07, poměr (Ti:pomeru S:Mn)=l,57. Ocel' vykazovala nasledujúce mechanické vlastnosti a to medza sklzu Re 205 MPa, medza pevnosti Rm 338 MPa a óažnosť 32,2 %.C 0.03%, Mn 0.23%, P 0.019%, S 0.016%, 0.025%, Ti 0.11%, S: Mn = 0.07, (Ti: S: Mn) = 1, (57) The steel exhibited the following mechanical properties, namely yield strength Re 205 MPa, yield strength Rm 338 MPa and ductility 32.2%.

Claims (1)

PREDMET VYNÁLEZUOBJECT OF THE INVENTION Ocel’ pře smaltovanie, vyrábaná najmá kontinálnym odlievanim o chemickom zložení v hmotnostnom vyjádření do 0,04 % uhlíka, do 0,04 % hliníka, 0,15 až 0,35 % mangánu, do 0,030 % fosforu, do 0,025 % síry, do 0,06 % médi, do 0,03 % arzénu, do 0,025 % cínu, do 0,06 % Chrómu a do 0,15 % titanu vyznačujúca sa tým, že obsah titanu v oceli je najmenej polovica hodnoty zodpovedájúcej poměru síry ku mangánu v oce-Steel for enamelling, produced mainly by continuous casting of a chemical composition, by weight, up to 0,04% carbon, up to 0,04% aluminum, 0,15 to 0,35% manganese, up to 0,030% phosphorus, up to 0,025% sulfur, to 0,06% medium, 0,03% arsenic, 0,025% tin, 0,06% chromium and 0,15% titanium, characterized in that the titanium content in the steel is at least half the value corresponding to the sulfur to manganese ratio ocel-
CS872095A 1987-03-26 1987-03-26 Steel ’for enamelling CS268563B1 (en)

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CS872095A CS268563B1 (en) 1987-03-26 1987-03-26 Steel ’for enamelling

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Application Number Priority Date Filing Date Title
CS872095A CS268563B1 (en) 1987-03-26 1987-03-26 Steel ’for enamelling

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CS209587A1 CS209587A1 (en) 1989-08-14
CS268563B1 true CS268563B1 (en) 1990-03-14

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