SU1581468A1 - Method of continuous casting of quick-hardened band - Google Patents

Abstract

The invention relates to metallurgy. The aim of the invention is to improve the quality of the tape by separating it from the substrate using centrifugal forces. A thin layer of melt is deposited on the moving metal substrate, which, when cooled, forms a ribbon (L). Together with the metal substrate, L enters the drum, the radius of which is determined by the expression R * 98V 2 (ρ .T / Q), where V is the speed of movement of the substrate

ρ is the density of material L

T - thickness L

Q is the specific adhesion force between A and the substrate. L is separated by centrifugal force from the substrate and is fed to the winding. 1 hp ff, 4 ill.

Description

1

The invention relates to metallurgy, namely to the continuous casting of rapidly quenched tape.

The aim of the invention is to improve the quality of the tape by separating it from the substrate using centrifugal forces.

Figure 1 shows an embodiment of the method; figure 2 - section aa in figure 1; on fig.Z - node I in figure 1.

Melt tank 1 is installed above cooled drum 2, metal cloth 3 (substrate) covers drum 2 and drum 4, the radius of which r, tension roller 5 and grinding substrate 3, roller 6 are designed to increase the angle of coverage of canvas 3 of surface 7 of drum 2 A guide 8 is mounted around the drum 4, and the core 9 of the viewing device is pressed against the blade 3 on the drum 4 by means of its own weight. At the same time, the core at the expense of the lever 10 in the process of winding the tape into the roll 11 rises above the drum 4. The fast-hardened tape 12 is in contact with the substrate 3 on the path from the tank 1 to the drum 4.

The radius of the drum 4 corresponds to

expression

r.v f-,

and the radius of the cooled drum 2 corresponds to the expression:

where r

q;

and R

V and t q

respectively, the radii of the drum 4 and drum 2; the speed of movement of the metal sheet 3, and therefore the tape 12; respectively, the density of the material and the thickness of the fast-hardened tape I2; specific (per unit area) adhesion force of the tape 12 to the web 3.

The method is implemented as follows.

From the vessel 1, a thin layer of the melt is applied to the moving metal substrate 3, which, cooling on the substrate 3, turns into a tape 12.

The cooled drum 2 contributes to the effective cooling of the tape 12, after which the substrate 3 together with the tape 12 cooled on it enters the drum 4 and bends along the radius g

drum 4, which leads to the action of centrifugal forces F ,, larger than the force of adhesion of the tape 12 to the blade 3. As a result, the tape 12 separates from the substrate 3 and, supported by the guide 8, is fed to the coiling to the core 9. By known means the tape 12 is gripped on the core 9 and is rolled into the roll 11. In this case, the coiling speed is controlled by the tape 12 itself on the substrate 3, as the roll 11 is pressed against the drum 4. The substrate 3 is tensioned by the roller 5, and the roller 6 provides the gripping 3 reels 2 at the angle of application on the base 3 ku new melt layer of the container 1. In the area with the angle Cf substrate 3 is further cooled.

The use of the invention makes it possible to reliably separate the tape from the cooling surface in the absence of knives or powerful air jets due to the effect of centrifugal forces, which are evenly distributed to the tape and act on each particle of the tape. As a result, the quality of the tape is improved, and conditions are created for its effective winding into a roll.

Claims (2)

1. A method of continuously casting a fast-encapsulated tape, comprising feeding melt onto a moving cooling substrate, forming a tape on it and separating it from the substrate, characterized in that, in order to improve the quality of the tape by separating it from the substrate using centrifugal forces, the substrate separation section of the substrate is given a curvature of radius r, determined from the expression 2 × iV 50 55 where V is the substrate moving speed; P is the density of the tape material; t is the tape thickness; q - specific adhesion force between tape and backing. 2. The method according to claim 1, characterized in that a closed metal web is used as the cooled substrate. 2 FCU