SU1348057A1 - Method of continuous horizontal casting of billets - Google Patents

Abstract

This invention relates to the field of metallurgy, in particular to the continuous casting of metals. The goal is to increase the quality of the ingot surface and reduce energy consumption. The essence of the method lies in the fact that the metal through the metal pipe is fed into the mold. An inert gas or lubricant is fed under pressure into the gap between the metal and the crystallizer. In the inductor mounted on the metal wire, a magnetic field is created to release the metal in the gap. At the same time, gas is additionally supplied under the level of the metal in the metal receiver, and the difference in the levels of gas supply in the metal receiver and the crystallizer maintains 0.05 ... O, 15 m. This allows a significant reduction in energy consumption during continuous casting of the blanks. 1 hp f-ly, 2 ill. (L oo 4i) 00 about sd

Description

H -iiiiii-h- and: g. (1 gp1ch: it:. To metallurgy, iTdfi -..noch lche r i ii: ir): inu j: i4bnoMy 11ep)). N.: U pp metal aop

Ht - and descriptions - rioBLiuienne kache With rot iiojicipyaiocTK and e e5) gh.ch; j paT,

 fi.g. I 11: and 6p; kepo device for wasps1 | 1 sac |; In the course of the installation and installation of the ipductier and the crystallizer, the cut; in fig. 2 - the same with the installation of a thiopkg tp of the duct of the sword of the allo-wire.

The device for the method of balancing contains r-iei with a liquid receiver 1 with liquid metal) - 2,; chotalloprovod 3, crystallizer D,) and; 1uktor 3, mohs, 1P 1zm 6 kacha-1-1 gallium. 1tog; a, tlpuni-e set poi iCTHo 7,. |, 11 ng1 / g11papi zagotoz-1SI 8 ,, and 1 (5: kst also 7 on; och t1, pipe-pro / g U p. L under, water an inert gas of 10 and an MO of ha.) and 10 and a gap between the crystal 113a and oor vi - steelloopod. .az)) from the side of П (:),; .1ач 1 бшдкого MCTattjt; -jaiuicneH from aTMOC () seals ,, and; 1 example, tii; .1 bellows 11, s; on c (h) ntMipeiK.itnTor o burns it tal jntTi.H-prepared go dry)) C; 1 unit | : P1; 1 way.

P, gployiloim; 1 stop 2 of metal-ZO shade with a minimum expenditure of energy to power the inductor, with continuous drawing with a swing of the mold, ingots with high surface quality are obtained.

Example. The casting is carried out on a machine of the horizontal type with the following technical characteristics:

iriemnpkm 1 g is supplied through metal 3 i; -: p} u: T.- |, (sp. hr. (lp, temporarily, insta gas or lubricant under daples ism ij, the gap between the metal line 3 (and. gt) | 11, m 1 storom , installed in ms. 1;, AOI1, diode 5) and 1; p1 s: stallion A, (1 r1kl 5e -: sicho include the inductor 5 and created .RS T magnetic field, which: m. if (iiei:., h yr. About hundred POCHI OS-fer) is about static;, Ui ..- ni-se and otsypigot smelted metal 1 in p; ii io, e of the joint of the metal wire and j) istal: and the chator. when the pinch1c1p is installed on the crystal; lizathoorc (; | 1ig. I), G1t - ,; с1) is small liquid glass from the radial mpliplepia from the inner surface of the crystallizer And kogd.a indukg op mounted on metal- pronodr (FIG, 2) of liquid methane otlmmayut och hh yes inductor. Thus, the combined action of a lubricant or a glove h, supplied under pressure, and a mat of a nitroc floor prevent the ingress of liquid mela-alla into the gap between the crimper 4 and the metal conductor 3 (inductors. M, installed on me- tanlopiovascular}, With the help of the mechanism 6 Kg 1H, pn.11 nr1-1 for: - BO3iip crystallizer; ii: o-incT -na Heavy movement and with П; Г 1: 1; m. I jiiiyr.ret ri device 7 not u

45

50

55

Diameter of cast billets, m0.05

Drawing speed} w blanks, m / s0.05

Mold swing oscillation amplitude, m tO, 004 Swing frequency, 1 / s 1-4 Power supply of inductor, kW / h100

Poured metal - steel with a density of y, kg / m 7000

Gas pressure or grease P,

The difference in levels of inert gas supply h-b, m1,0

The amount of metal displacement, m0,0008

The crystallized, ingot 8 is continuously pulled out of the crystallizer 4.

In order to automatically maintain the pressure inert in the gap between the mold and the metal conductor (or inductor), simultaneously with the gas supply 10, this gap is fed into the liquid metal 2 of the metal receiver through the connecting gas line 9, and the level of gas supply to the metal receiver 1 is , 05-0.15 m above the level of the metal in the mold. Excess gas in the form of bubbles is removed from the metal reservoir.

The value of 05-0.15 m is chosen experimentally. At, 05 liquid bubbles of gas may enter the ingot, while, 15 m, the cost of feeding the inductor increases significantly. Thus, the supply of gas or lubricant under pressure (b-b) provides for the balancing of the pressure of a significant part of the h-b column of liquid metal in the metal reservoir without clogging up the metal of the workpiece with these products.

As a result of using the image

Diameter of cast billets, m0.05

Drawing speed} w blanks, m / s0.05

Mold swing oscillation amplitude, m tO, 004 Swing frequency, 1 / s 1-4 Power supply of inductor, kW / h100

Poured metal - steel with a density of y, kg / m 7000

Gas pressure or grease P,

The difference in levels of inert gas supply h-b, m1,0

The amount of metal displacement, m0,0008

Billets with high surface quality are obtained with a low power source of the inductor.

The technical and economic advantages of the method consist in increasing the surface quality of the workpieces and reducing energy consumption, which provides an increase in the yield by 5-10%.

Claims (1)

1. Method for continuous horizontal casting of workpieces, including supplying metal from a metal receiver through a metal pipe to a mold installed with a gap — relative to a metal wire, telling the crystallizer reciprocating movement relative to a metal wire, squeezing the liquid metal in the gap between the metal wire and the mold using an electromagnetic field and pulling out crystallizer 0 ingot, which, in order to improve the quality of the ingot surface and reduce energy consumption, gas or lubricant under pressure P is fed into the gap between the metal conduit and the mold in accordance with the dependency: (hb) where is the density of the metal, t / m; h is the height of the metal column in the metal receiver above the upper level of the metal in the crystallizer, m; b 0.05 - 0.15 m. 2, the method according to claim 1, characterized in that in addition 0 gas is supplied under the metal level in the metal receiver, wherein the difference in the gas supply levels in the metal receiver and the crystallizer is 0.05 - 0.15 m. ten / ir /// (t, Z