CN212264472U

CN212264472U - Graphite pouring pipe for vertical continuous casting

Info

Publication number: CN212264472U
Application number: CN202020429909.XU
Authority: CN
Inventors: 王云龙; 周俊芳; 傅海东
Original assignee: Shanghai Hailiang Copper Co ltd
Current assignee: Shanghai Hailiang Copper Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2021-01-01
Anticipated expiration: 2030-03-30

Abstract

The utility model provides a vertical continuous casting is with graphite pipe of watering belongs to metal casting technical field. The graphite casting pipe for vertical continuous casting comprises a pipe body. A straight pouring gate is arranged in the pipe body, and two ends of the straight pouring gate are respectively communicated with the upper surface and the lower surface of the pipe body; the sprue comprises a feed through hole positioned at the top end of the pipe body and a discharge through hole positioned at the tail end of the pipe body; the feeding through hole is communicated with the discharging through hole; six oblique pouring channels are arranged inside the side wall of the pipe body; one end of the inclined pouring gate is communicated with the feeding through hole, and the other end of the inclined pouring gate is communicated with the bottom surface of the pipe body. The utility model discloses a can make the heat distribution in the vertical pouring solidification process of molten metal even.

Description

Graphite pouring pipe for vertical continuous casting

Technical Field

The utility model belongs to the technical field of the metal casting, concretely relates to vertical continuous casting is with graphite pipe of watering.

Background

The large metal cast ingot is produced by adopting a vertical continuous casting mode, and is basically characterized in that a connecting device matched with a furnace end is arranged at the top end of a graphite pouring pipe, the graphite pouring pipe is connected and locked with the furnace end through the connecting device, a metal melt is uniformly guided into a crystallizer cooled by water through the graphite pouring pipe, and the metal melt in the crystallizer is cooled by the wall and the base of the crystallizer and is rapidly solidified and crystallized to form a layer of solidified shell. When the level of the metal melt in the crystallizer reaches a certain height, the traction mechanism of the ingot casting machine drives the base and the solidified shell solidified on the base to continuously and uniformly move downwards at a certain speed. When the portion solidified into a cast slab leaves the mold, it is immediately subjected to direct cooling by the secondary cooling water from the lower edge of the mold, and the solidified layer of the ingot is continuously advanced toward the central region and completely solidified and crystallized. And stopping casting and unloading the cast ingot after the length of the cast ingot reaches the specified size, and returning the base of the casting machine to the original position to finish one casting time.

However, in the prior art, the graphite casting pipe adopted by the vertical continuous casting has the problems of uneven heat distribution in the process of vertical casting and solidification of molten metal, serious sudden change of a high-temperature area, uneven heat distribution, easy generation of defects such as surface cracks, internal pores, central cracks and the like of an ingot.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a vertical continuous casting is with graphite pouring pipe can make the vertical pouring of metal liquid solidify the heat distribution in-process even, reduces the high temperature zone sudden change, eliminates because of defects such as uneven ingot casting surface crack, inside gas pocket and the central crackle that produces of heat distribution.

A graphite pouring pipe for vertical continuous casting comprises a pipe body. A straight pouring gate is arranged in the pipe body, and two ends of the straight pouring gate are respectively communicated with the upper surface and the lower surface of the pipe body; the sprue comprises a feed through hole positioned at the top end of the pipe body and a discharge through hole positioned at the tail end of the pipe body; the feeding through hole is communicated with the discharging through hole; six oblique pouring channels are arranged inside the side wall of the pipe body; one end of the inclined pouring gate is communicated with the feeding through hole, and the other end of the inclined pouring gate is communicated with the bottom surface of the pipe body.

Furthermore, the included angle between the inclined pouring channel and the straight pouring channel is 30 degrees.

Further, the lengths of the six oblique pouring channels are consistent.

Further, the diameter of the discharge through hole is smaller than that of the feed through hole.

Further, the diameter of the inclined pouring channel is the same as that of the discharging through hole.

Further, the graphite casting pipe for vertical continuous casting is of a centrosymmetric structure.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a mode that one divide into seven (molten metal flows in from a feed through hole, flows from a discharging hole and six oblique runners), has following advantage:

1. the outlet pressure of the inclined pouring gate and the outlet pressure of the discharging through hole can be ensured to be the same, and the flowing speed of outlet metal can be greatly reduced, so that the depth of a liquid cavity is reduced, the heat distribution in the vertical pouring and solidification process of molten metal is uniform, the mutation of a high-temperature area is reduced, and the defects of surface cracks, internal air holes, central cracks and the like of cast ingots, which are generated due to uneven heat distribution, are eliminated.

2. 7 high-temperature hot spots are formed on the cooling cross section in the cooling process, and the 7 high-temperature hot spots are positioned on the same cross section area, so that gas in the middle parts of different ingot sections can be smoothly discharged conveniently in the cooling forming process of molten metal, and casting structure grains are refined to the maximum extent.

Drawings

Fig. 1 is a cross-sectional view of a graphite pouring tube for vertical continuous casting according to the present invention.

Description of reference numerals:

the drawing comprises a pipe body 1, a feed through hole 2, a discharge through hole 3 and an inclined pouring gate 4.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

Referring to the attached drawing 1 of the specification, the utility model relates to a graphite casting pipe for vertical continuous casting, which comprises a pipe body 1. A straight pouring gate is arranged in the pipe body 1, and two ends of the straight pouring gate are respectively communicated with the upper surface and the lower surface of the pipe body 1; the sprue comprises a feed through hole 2 positioned at the top end of the pipe body 1 and a discharge through hole 3 positioned at the tail end of the pipe body 1; the feeding through hole 2 is communicated with the discharging through hole 3; six oblique pouring channels 4 are arranged in the side wall of the pipe body 1; one end of the inclined pouring gate 4 is communicated with the feeding through hole 2, and the other end of the inclined pouring gate 4 is communicated with the bottom surface of the pipe body 1.

Preferably, but not limited to, the included angle between the oblique pouring channel 4 and the straight pouring channel is 30 degrees.

Preferably, but not limited to, the lengths of the six oblique pouring channels 4 are uniform.

Preferably, but not limited to, the diameter of the tapping through hole 3 is smaller than the diameter of the feed through hole 2.

Preferably, but not exclusively, the diameter of the oblique pouring channel 4 is the same as the diameter of the tapping through hole 3.

Preferably, but not limited to, the graphite casting pipe for vertical continuous casting has a centrosymmetric structure.

In this example, the diameter of the feed-through 2 is selected to be 17mm, and the diameters of the feed-through 3 and the cross runners 4 are selected to be 10 mm.

The utility model discloses a use method does:

will the utility model provides a vertical continuous casting is connected and is locked with the furnace end with the top of body 1 that the graphite watered pipe, and the molten metal in the furnace body will follow feed through hole 2 inflow, and 4 inflow crystallizers of pouring water to one side along discharge through hole 3 and six carry out subsequent vertical continuous casting to solidify.

The above embodiments are merely preferred embodiments of the present disclosure, which are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present disclosure, should be included in the scope of the present disclosure.

Claims

1. The utility model provides a vertical continuous casting is with graphite pipe of watering, includes the body, its characterized in that: a straight pouring gate is arranged in the pipe body, and two ends of the straight pouring gate are respectively communicated with the upper surface and the lower surface of the pipe body; the sprue comprises a feed through hole positioned at the top end of the pipe body and a discharge through hole positioned at the tail end of the pipe body; the feeding through hole is communicated with the discharging through hole; six oblique pouring channels are arranged inside the side wall of the pipe body; one end of the inclined pouring gate is communicated with the feeding through hole, and the other end of the inclined pouring gate is communicated with the bottom surface of the pipe body.

2. The graphite pour tube for vertical continuous casting according to claim 1, characterized in that: the inclined pouring channel and the straight pouring channel form an included angle of 30 degrees.

3. The graphite pour tube for vertical continuous casting according to claim 2, characterized in that: the lengths of the six oblique pouring channels are consistent.

4. The graphite pour tube for vertical continuous casting according to claim 1, characterized in that: the diameter of the discharge through hole is smaller than that of the feed through hole.

5. The graphite pour tube for vertical continuous casting according to claim 1, characterized in that: the diameter of the inclined pouring gate is the same as that of the discharging through hole.

6. The graphite pour tube for vertical continuous casting according to claim 1, characterized in that: the graphite casting pipe for vertical continuous casting is of a centrosymmetric structure.