CS224915B1 - The equipment for the semi-continuous casting - Google Patents

The equipment for the semi-continuous casting Download PDF

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Publication number
CS224915B1
CS224915B1 CS356382A CS356382A CS224915B1 CS 224915 B1 CS224915 B1 CS 224915B1 CS 356382 A CS356382 A CS 356382A CS 356382 A CS356382 A CS 356382A CS 224915 B1 CS224915 B1 CS 224915B1
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Czechoslovakia
Prior art keywords
casting
crystallizer
semi
continuous casting
mold
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CS356382A
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Czech (cs)
Slovak (sk)
Inventor
Ladislav Gabor
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Ladislav Gabor
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Priority to CS356382A priority Critical patent/CS224915B1/en
Publication of CS224915B1 publication Critical patent/CS224915B1/en

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Description

Vynález sa týká zariadenia pre poloplynulé odlievanie odliatkov.The invention relates to a device for semi-continuous casting of castings.

Doteraz používané zariadenia pre poloplynulé odlievanie odliatkov pozostáva z otvoreného komorového kryštalizátora s možnostou diskontinuálnehe nastavenie velkosti štrbiny výstupu vody z primárného do sekundárného okruhu ohladenia a tažnej zátky s rovným dnom. Toto zariadenie má niekolko nedostat kov. Na kryštalizátore je možné velkost štrbiny výstupu vody z primárného do sekundárného okruhu ohladenia měnit pomocou sústavy podložiek, čo si vyžaduje niekolko pracovných operácií, pri ktorýoh je zariadenie mimo prevádzky. Velmi obtiažne a pracná je nastavenie rovnako velkej štrbiny po celom obvode kryštalizátora tak, aby bolo zabezpečené rovnoměrné chladenle odliatku po obvode. Rozdielna velkost štrbiny po obvode spósobuje nerovnoměrný výtok vody z primárného do sekundárného okruhu ohladenia, čo má za následek nerovnoměrná kryštalizáciu a velké pnutia, ktoré spósobujú pevrchová vady na odliatku·The hitherto used semi-continuous casting device consists of an open chamber crystallizer with the possibility of discontinuously adjusting the size of the water outlet gap from the primary to the secondary smoothing circuit and the flat-bottomed duct plug. This device has several metal deficiencies. On the crystallizer, the size of the water outlet gap from the primary to the secondary smoothing circuit can be varied by means of a set of washers, requiring several operations in which the device is out of order. It is very difficult and laborious to set up an equally large slit over the entire perimeter of the crystallizer so as to ensure uniform cooling of the casting over the perimeter. The different size of the gap around the perimeter causes uneven outflow of water from the primary to the secondary smoothing circuit, resulting in uneven crystallization and high stresses causing casting defects on the casting ·

Vyššie uvedené nedostatky sa odétránia zariadením pre poloplynulé odlievanie odliatkov s kryštalizátorom, ktorý má menitelnú štrbinu výtoku vody z primárného do sekundárného okruhu ohladenia s tažnou zátkou s otvormi pre uchytenie odliatku podlá vynálezu, kterého podstata spočívá v tom, že kokila má v hornej časti na vonkajšej plocho závit a je uložená na prírube, ktorá má na vnútornej ploché protizávit·The above-mentioned drawbacks are removed by a semi-continuous casting machine with a crystallizer having a variable water outlet slot from the primary to the secondary smoothing circuit with a draw-through plug for receiving the casting according to the invention, characterized in that the ingot mold has an upper part on the outer flat thread and is mounted on a flange that has a counter-thread on the inner ·

Pri odlievaní odliatkov na zariadení podlá vynálezu je možná měnit intenzitu ohladenia v sekundárnom okruhu ohladenia pri konštantnej intenzitě ohladenia v primárnom okruhu plynulou reguláciou velkosti štrbiny výtoku vody z primárného do sekundárného okruhu ohladenia bez demontáže. Zníži sa tým pracnost pri výměněWhen casting castings on a device according to the invention, it is possible to vary the smoothing intensity in the secondary smoothing circuit at a constant smoothing intensity in the primary circuit by continuously adjusting the size of the water outlet gap from the primary to the secondary smoothing circuit without disassembly. This will reduce replacement effort

224 915 kokily kryštalizátora a pri nastavení velkosti štrbiny, pričom sa zabezpečí centricita kokily a rovnoměrnost výtoku chladiacej vody z primárného do sekundárného okruhu chladenia po celom obvode odliatku·224 915 mold crystallizer and at the slot size setting, ensuring centricity of the mold and uniformity of cooling water flow from the primary to the secondary cooling circuit around the casting circumference ·

Na pripojenom výkrese je znázorněný příklad vyhotovenia zariadenia pre poloplynulé odlievanie odliatkov s kryštalizátorom a tažnou zátkou·The attached drawing shows an exemplary embodiment of a semi-continuous casting machine with a crystallizer and a pull plug.

Zariadenie pozostáva z kryštalizátora 1 a tažnéj zátky 2.The apparatus consists of a crystallizer 1 and a pull plug 2.

V dolnej časti kryštalizátora 1 medzi spodkem kokily 2 a štrbinovou přírubou £ je plynule nastavitelná štrbina výtoku vody z primárného do sekundárného okruhu chladenia* Vertikálny posuv kekily 2 3® zabezpečený tým, že kokila 2 v hornej časti na vonkajšej straně má závit a príruba 2» na ktorej je kokila 2 držaná, má na vnútornej ploché protizávit. Regulácicy velkosti štrbiny sa uskutečňuje podlá tvaru odliatku otáčaním príruby 2» alebo ©táčaním samotnéj kokily 2· ®ažná zátka 2 je zhora vybavená kuželem s otvormi 2, ktorý tvoří posuvné dno 6 kokily 2 kryštalizátora 1. Chladiaca voda do kryštalizátora 1 sa privádza z kruhového potrubia 8 cez štyri prívodné vetvy*At the bottom of the crystallizer 1 between the bottom mold 2 and £ slot flange is infinitely adjustable slit outflow of water from the primary to the secondary cooling circuit * Vertical movement kekily 2 3® ensured that mold 2 in the upper part of the outer side of the thread and flange 2 » on which the ingot mold 2 is held has a counter-thread on the inner flat. The slot size control is effected according to the shape of the casting by turning the flange 2 »or by twisting the mold 2 itself. piping 8 through four supply lines *

Před liatim sa zasunie posuvné dno 6. do kokily 2 kryštalizátora 1 tak, aby vrchol kužela posuvného dna 6 bol asi 50 mm od vrchu kokily 2· P® začatí liatia sa zaplnia ©tvory 2 v kůžele posuvného dna 6 kovem, ktorý ihned stuhne a zabezpečí tak pevné spoj enie odliatku s posuvným dnem 6.. Vzhladom na velký povrch kužela posuvného dna 6 sa takmer okamžité vytvoří bezpečná kóra, ktorá umožní dodržet technologické podmienky liatia·Before the casting, the sliding bottom 6 is inserted into the mold 2 of the crystallizer 1 so that the top of the sliding bottom cone 6 is about 50 mm from the top of the mold 2. thus ensuring a firm connection of the casting with the sliding bottom 6. Due to the large surface of the sliding bottom cone 6, a safe crust is created almost immediately, allowing the casting technological conditions to be maintained ·

Zariadenie podlá vynálezu sa odskúšalo pri poloplynulom odlievaní měděných čapov, kde velkost štrbiny výtoku vody z primárného do sekundárného okruhu chladenia sa nastavovala otáčaním kokily 2» ktorá má v hornej časti vytvořený závit v prírube 2» ktorá má na vnútornej straně protizávit· Na tomto zariadení sa odlialo 60 čapov· Po odliatí každých dvadsiatich čapov sa měnila velkost štrbiny bez demontáže kryštalizátora· Vyhodnotenie vzoriek u odliatyoh čapov ukázalo na rovnomernú kryštalizáciu po obvode v dósledku rovnoměrného chladenia, vysoků reprodukovatelThe device according to the invention has been tested in semi-continuous casting of copper pins, where the size of the water outlet gap from the primary to the secondary cooling circuit is adjusted by rotating the ingot mold 2 having a threaded flange 2 in the upper part. 60 studs cast · After casting every twenty studs, the slot size changed without disassembling the crystallizer · Sample evaluation on cast studs showed uniform crystallization around the circumference due to uniform cooling, high reproducibility

- 3 224 915 nosť technologických parametrov a tiež na vplyv intenzity chladenia se změnou velkosti štrbiny· So změnou velkosti ětrbiny sa měnil poměr radiálnej k osovej kryštalizáoli· V priebehu odlievania všetkých 60 čapov nedošlo ani raz k porucho a hmotnost nábehovej časti čapov* tzv· pSty* která jo vratná,sa oproti liatiu na pdvednom zariadení znížila o 2/3·- 3 224 915 technological parameters and also the effect of cooling intensity with the change in the slot size · With the change in the slot size the ratio of the radial to the axial crystallization changed · During the casting of all 60 pins no failure occurred and * which is reversible, decreased by 2/3 compared to the casting on the double device ·

Na zariadení bola odskúšaná aj výměna kokily kryštalizátora bez demontáže kryštalizátora a čas,potřebný na túto výměnu a nastavenie velkosti štrbiny výtoku vody z primárného do sekundárného okruhu chladenia a centricity kokily, bel o 90 % kratší ako u póvodného zariadenia·The device has also been tested to replace the crystallizer mold without disassembling the crystallizer and the time required to replace it and adjust the size of the water outlet slot from the primary to the secondary cooling circuit and the centricity of the mold, by 90% shorter than the original equipment.

Claims (1)

Zariadenie pre peloplynulé cdlievanie odliatkov s kryštalizátorem, který ma měnitelnú ětrbinu vyteku vody z primárného de sekundárného okruhu chladeniáy^ ťažneu zátkeu s otvormi pre uohytenie odliatku, vyznačené tým, že kokila /3/ má v hornej časti na vonkajšej ploché závit a je uležená na prírube /5/, která má na vnútornéj plocho protizávit.Apparatus for the pelletizing of castings with a crystallizer having a variable water leakage from the primary secondary secondary circuit of the cooling plug with holes for receiving the casting, characterized in that the ingot mold (3) has an outer flat thread at the top and fits on the flange (5), which is to be counter-threaded on the inner surface.
CS356382A 1982-05-17 1982-05-17 The equipment for the semi-continuous casting CS224915B1 (en)

Priority Applications (1)

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CS356382A CS224915B1 (en) 1982-05-17 1982-05-17 The equipment for the semi-continuous casting

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CS356382A CS224915B1 (en) 1982-05-17 1982-05-17 The equipment for the semi-continuous casting

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