TWM645815U - Mold for casting steel ingot - Google Patents

Abstract

A mold for casting steel ingots includes two outer frames that are detachably aligned with each other, and two casting mold bodies that are respectively connected to the outer frames and detachably aligned with each other. The cross section of each outer frame is U-shaped and has a front inner ring surface. The front inner ring surface has two bends with an included angle of 95 degrees. The front inner annular surfaces of the outer frames cooperate to define an opening. Each mold body extends rearwardly along a depth direction from a corresponding outer frame. The mold body has a rear inner ring surface connected to the front inner ring surface. The rear inner ring surfaces of the mold bodies cooperate to define a A mold hole. Through the design of these 95-degree bends, the problem of the traditional mold being retracted and dented and then clamping the steel ingot making it impossible to remove the mold can be overcome, and the smoothness of the mold removal operation can be maintained.

Description

Molds for casting steel ingots

The invention relates to a mold, in particular to a mold for casting steel ingots.

The mold generally used for casting steel ingots consists of two parts that can be combined. The mold is used to contain high-temperature molten steel for casting steel ingots at normal temperature. Since the molten steel often reaches temperatures above 1500 degrees Celsius during casting, When the molten steel gradually cools in the mold, severe thermal expansion and contraction will occur. When the mold is new, it can be withstood through structural strength. However, under repeated operations of the same mold, its openings are prone to rigid fatigue. The concave phenomenon makes it difficult to dismantle the mold and eject the steel ingot, and also further reduces the service life of the mold. In addition, the mold has been eroded by molten steel for a long time, and the liquid has produced small corrosion holes on its smooth surface. This makes it more difficult to remove the mold after the molten steel penetrates and cools.

Therefore, the purpose of the present invention is to provide a mold that can avoid internal shrinkage due to thermal expansion and cold contraction, making it difficult to remove the mold.

Therefore, the new mold for casting steel ingots includes two outer frames that are detachably aligned with each other, and two casting mold bodies that are respectively connected to the outer frames and detachably aligned with each other. The cross section of each outer frame is U-shaped and has a front inner ring surface. The front inner ring surface has two bends with an included angle of 95 degrees. The front inner annular surfaces of the outer frames cooperate to define an opening. Each mold body extends rearwardly along a depth direction from a corresponding outer frame. The mold body has a rear inner ring surface connected to the front inner ring surface. The rear inner ring surfaces of the mold bodies cooperate to define a A mold hole.

The function of this new model is that through the 95-degree design of the bends, it can overcome the problem of the traditional mold being retracted and concave and then clamping the steel ingot, which makes it impossible to remove the mold, so that the mold can withstand 3 more casting heats than the traditional mold. to 5 times, effectively extending the service life of the mold, reducing costs and maintaining the smoothness of the mold removal operation.

Referring to Figure 1, an embodiment of the new mold for casting steel ingots includes two outer frames 1 and two casting mold bodies 2 respectively connected to the outer frames 1. Each outer frame 1 has a U-shaped cross section in a depth direction A and has a front inner annular surface 11 . The front inner annular surface 11 has two side end edges 111 spaced apart from each other along a width direction B perpendicular to the depth direction A, and a front end edge 112 connecting the side end edges 111 . Each side end edge 111 extends in an arc along a length direction C perpendicular to the depth direction A and the width direction B. The front end edge 112 can also extend in an arc along the width direction B as required. The side end edge 111 and the The front edge 112 cooperates to define a bend D with an included angle α of 95 degrees. Each mold body 2 extends rearwardly from the corresponding outer frame 1 along a depth direction A, and has a rear inner ring surface 21 connected to the front inner ring surface 11 . The outer frames 1 are provided with mutually fitting or abutting structures, so that the outer frames 1 can be aligned and close to each other, and the mold bodies 2 will also be close to each other. At this time, the front inner annular surfaces 11 cooperate to define an opening 12 opened outward along the depth direction A, and the rear inner annular surfaces 21 cooperate to define a mold cavity 22 connected to the opening 12 .

When casting, the outer frames 1 and the casting mold bodies 2 are first brought together, and then high-temperature molten steel is poured into the mold cavity 22 through the opening 12 . During the cooling of the molten steel into the steel ingot, the angle α of the four bends D is designed to be 95 degrees, so that the mold will not shrink excessively and clamp the steel ingot located in the mold cavity 22, thereby maintaining the subsequent Smoothness during mold removal. This new model can overcome the problem that the traditional mold shrinks to the point where it cannot be removed after using about 30 casting furnaces. Compared with the traditional mold, this new model can outlast the original casting furnace by 3 to 5 times, greatly extending the service life and reducing the cost of the mold. consumption, achieving the effect of reducing overall costs and improving process smoothness.

To sum up, in this new model, the angle α of the bends D is designed to be 95 degrees, thereby preventing the mold from excessive shrinkage due to thermal expansion and contraction, extending the life of the mold and maintaining the reliability of the mold removal operation. Smoothness, so it can indeed achieve the purpose of this new model.

However, the above are only examples of the present invention, and should not be used to limit the scope of the present invention. All simple equivalent changes and modifications made based on the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by this new patent.

1: Outer frame 11: Front inner ring surface 111: Side edge 112:Front edge 12: Open your mouth 2: Casting mold body 21: Rear inner ring surface 22:Mold cavity A: Depth direction B: Width direction C:Length direction D: bend α: included angle

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a bottom view illustrating an embodiment of the new mold for casting steel ingots; and FIG. 2 is a side cross-sectional view to assist in explaining the side cross-sectional aspect of FIG. 1 .

1: Outer frame

11: Front inner ring surface

111: Side edge

112:Front edge

12: Open your mouth

B: Width direction

C:Length direction

D: bend

α: included angle

Claims (2)

A mold for casting steel ingots, containing: Two outer frames are detachably coupled to each other. The cross section of each outer frame is U-shaped and has a front inner annulus. The front inner annulus has two bends with an included angle of 95 degrees. The front inner annular surfaces of the outer frame cooperate to define an opening; and Two casting mold bodies are respectively connected to the outer frames and detachably coupled with each other. Each casting mold body extends backward from the corresponding outer frame body in a depth direction. The casting mold body has a connecting surface to the front inner ring. The rear inner annular surfaces of the mold bodies cooperate to define a mold cavity. The mold for casting steel ingots as described in claim 1, wherein the front inner ring surface of each outer frame body has two side end edges spaced apart from each other along a width direction perpendicular to the depth direction, and a connecting side end edge. Each side edge extends in an arc along a length direction perpendicular to the depth direction and the width direction, and the side edge and the front edge cooperate to define one of the bends.

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