JPS6015048A - Continuous casting device for thin plate - Google Patents

Abstract

PURPOSE:To eliminate the deformation of a stationary casting mold wall and to eliminate the trouble occurring in sliding of the mold wall with a billet by pressing the stationary mold to the outside circumferences in the projecting parts at both ends of a rotary casting mold and providing an opening through which molten slug flows out to the mold surface of the stationary mold. CONSTITUTION:The molten metal 2 poured into the mold space enclosed of the four sides, i.e., a cylindrical part 3a and projecting parts 3b of a rotary casting mold 3 and the mold surface 4g of a stationary casting mold 4e is cooled and solidified by the above-mentioned walls and is drawn out in the rotating direction of the mold 3. A slit-shaped opening 5b is provided to the surface 4g and the boundary between the surface 4g and a billet 1 is lubricated by the molten slag 5a stored in a hollow part 4f. The mold 4e is positively heated by heating elements 4h to prevent solidification of the metal 2 from the surface 4g side so that the billet 1 is grown from the mold 3 side and is slid when the growth arrives at the surface 4g in the stage of casting a material having a high solidifying point. The trouble occurring in the sliding of the stationary mold wall with the billet is thus eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field of the present invention] The present invention relates to a continuous casting apparatus for thin plates of glass, plastics, gold, etc.

[Conventional thin plate continuous casting equipment]

The conventional thin plate continuous casting equipment is shown in Fig. 1 (plan view) and Fig. 2.
As shown in FIG. 9, a sectional view taken along line II in FIG. 1, a mold space is formed with the cylindrical portion 3a of the rotary mold, the protruding portion 3b, and the mold belt 5 as four sides. The walls forming the mold space poured into this mold space are moved as shown by 3f and 5a by the driving device to help move the slab 1. The slab 1 is pinched.

The cooling water to the N rotation @ type 3 is made to enter and exit through the middle is13B, and the lug l14116C5 of the rotation adjustment type 3 is
3d is connected to a driving device, and one of the driving pulleys 4a and 4C of the mold belt 5 is connected to the driving device.

[Disadvantages of the above conventional device]

When casting wide pieces such as thin plates with this conventional equipment,
Abnormal deformation occurs in the belt part, which forms one side of the mold wall, due to belt tension and thermal expansion9, making it difficult to maintain a predetermined cylindrical concave surface, resulting in short belt life and high maintenance costs. have.

[Object of the present invention]

The object of the present invention is to provide a thin plate casting apparatus which eliminates the drawbacks of the conventional apparatus described above.

That is, the object of the present invention is to prevent deformation t' that is harmful to the mold wall even in continuous casting of wide slabs such as thin plates! As expected,
And short FF like a belt? It is necessary to provide a thin plate continuous casting apparatus that does not use i-members.

[Composition of Kiensu]

In order to achieve the above object, the present invention uses a fixed mold in place of the FA type belt in the conventional apparatus, and provides an opening through which molten slag flows out on the mold surface of the fixed mold. That is, in a thin plate continuous casting apparatus using a rotary mold having protrusions on both edges, a fixed mold # is brought into contact with the outer periphery of the protrusion on both of the rotary molds, and molten slag is applied to the nff1 surface of the solid mold. It is a thin plate continuous casting machine that has an opening for outflow (ll-qdj).

In the present invention, the rotary mold is cylindrical and hv
Both edges of this cylindrical portion protrude at a constant height over the entire circumference, and are rotatably supported around the axis 9 of the cylinder. Furthermore, the inside of this rotary mold can be cooled, and such a rotary mold is the same as the conventional thin plate continuous casting apparatus described above. In the present invention,
The fixed image ffi' is in contact with the outer periphery of the protrusions on both edges of this rotary mold, or this fixed mold has a partially circular biconcave Ifr, and the concave (2) is at least the above-mentioned (b) both edges of the rotary mold. The curvature of the partial cylindrical concave surface is the same as the outer peripheral curved surface of the two protrusions of the rotary mold. In the present invention, the partial cylindrical concave surface of the fixed mold, the cylindrical part of the rotating mold, and the protruding parts (two sides) of both edges of the rotating mold.
The space surrounded by the four sides of is the mold space.

Further, in the present invention, a slit-shaped opening through which molten slag flows out is provided on the @ mold surface of the fixed mold, and molten slag is supplied from the outside to the interface between the fixed mold and the slab. This is to prevent troubles in continuous casting using a fixed mold, which tend to occur due to sticking of slabs to the fixed mold or generation of excessive sliding resistance.

In addition, when a material with a high blooming and hardening point is inserted into the mold, it is preferable to provide a means for heating the fixed mold itself, such as a heating element or a heating rod.

Although the present invention has been described in detail above, the present invention will be explained in more detail with reference to FIGS. 6 and 4.

FIG. 6 is a plan view of a thin plate continuous casting apparatus according to an embodiment of the present invention, and FIG. 4 is a sectional view taken along the line 1--2 in FIG. 6. A mold space is formed with the rotary mold cylindrical part 6a, the protruding part 3b, and the fixed mold mold surface 4g as four sides. The molten metal 2 injected into both mold spaces is mainly placed in the rotary mold 6 (the rotary mold 3 is cooled by cooling water through the entire hollow part 6e) among the four sides forming the mold spaces. Heat is emitted from the cylindrical portion 3a of the rotary mold 3, and it moves in the direction of movement of the rotary mold 3 while solidifying.

4e is a fixed mold 6. ! A slit-shaped opening 5b is provided in the mold surface 4g of this fixed separate mold 4e.

This slit-shaped opening is connected to the hollow s4f. This hollow part 4fK molten slag (reserved) 5a
is stored, and is brought into contact with the piece 1 on the mold direction 4g of the fixed mold 4e through the slit-shaped opening 5b at the bottom thereof.

The fixed mold 4e is not cooled, especially when casting a material with a high freezing point, the heating element 411f is embedded in the fixed mold 4e and heated in a collapsing manner, so that the molten metal 2 flows from the side of the fixed mold itself 4g. Prevents the formation of slabs. Therefore, when the slab 1 grows only from the rotary mold 6 side and reaches the mold surface 4g, it contacts and slides thereon. Molten slag flows out from 5b to the part of the mold surface 4g where the slab 1 comes into contact and slides, and lubricates the interface between the fixed mold surface 4g and the slab 1.

Served.

Since the periphery of the hollow part 4f of the fixed mold 4e is overlapped by the heat generation 4/44h, the molten slag inside is heated and maintains fluidity.

A part of the heating rod 4h also serves to heat the mold surface 4g.

[Effects of the present invention]

As described in detail above, the present invention uses a fixed mold instead of the endless belt that forms one side of the mold wall in the conventional method, thereby achieving the effect of making the entire mold wall strong for $111. arise. -! ,/hi, fixed-j
Continuous casting using molds may cause problems due to sticking of the slab to the fixed mold or generation of excessive sliding resistance, but in the present invention, molten slag is supplied to the interface between the fixed mold and the slab. This prevents sticking and provides lubrication, and eliminates troubles caused by sliding between the fixed mold and the slab. Furthermore, the present invention does not use short-lived parts such as endless belts used in conventional devices, resulting in cost reduction.

[Brief explanation of drawings]

Figure 1 is a half-view of a conventional thin plate continuous casting machine, and the second
The figure is a sectional view of Figure 1 f-1 win. FIG. 6 is a half-view of a thin plate continuous casting apparatus according to an embodiment of the present invention, and FIG. 4 is a sectional view taken along line II-II of FIG. 6. 1: Slab 4a, 4b, 4c: Bouli 2: Bath water 4e° Mukaiya mold 5 double rotation mold 4f: Middle part 6a1 Cylindrical part 4g 2 Mold surface 6b; Protruding part 4h: Heating rod sub-agent inside 1) Meifuku Agent Ryo Hagiwara - Figure 4

Claims (1)

[Claims] In a thin plate continuous casting apparatus using a rotary mold having protrusions on both edges, a fixed mold is brought into contact with the outer periphery of the protrusions on both edges of the rotary mold, and an opening is provided in the mold surface of the fixed mold through which bath molten slag flows out. Continuous thin plate casting equipment featuring: