JPH0533941U - Ladle for spheroidization - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a ladle for spheroidizing treatment that prevents smoke generation, flashing, and molten metal scattering during spheroidizing treatment. [Structure] A main body has a crucible-shaped portion in which a spheroidizing agent is provided, and a partition plate made of a refractory material for partially partitioning the inside of the main body is provided in a lower portion of a lid that covers the main body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a spheroidizing ladle for producing spheroidal graphite cast iron and the like.

[0002]

[Prior Art]

 Castings are often used as parts of automobiles and machines. Among them, spheroidal graphite cast iron is used in the parts requiring particularly high strength. There is a spheroidizing treatment in the process of producing spheroidal graphite cast iron, which includes a sandwich method, a GF converter method, an in-mold method, a plunger method, a tundish method and the like.

The sandwich method is relatively easy and is most widely used among the various spheroidizing methods described above. The spheroidizing treatment by this method generally uses a dedicated spheroidizing ladle as shown in FIG. This ladle for spheroidizing treatment is composed of a crucible-shaped main body 1 having a pocket inside which a spheroidizing agent is placed inside, and a lid covering the main body 1. In addition, there is a method, such as Japanese Utility Model Laid-Open No. 63-62266, in which a weir is provided in the lower part of the crucible body and a spheroidizing agent is provided on one side of the weir.

[0004]

[Problems to be solved by the device]

 During the spheroidizing treatment, a reaction occurs between the molten metal at high temperature and the spheroidizing agent, and there is a risk of the molten metal being scattered during the smoke and flash of magnesium oxide, and during a sudden explosive reaction. The conventional ladle for spheroidizing treatment still had problems due to problems such as smoke generation, flashing light, and molten metal scattering, and environmental deterioration and the effects on the human body.

An object of the present invention is to provide a ladle for spheroidizing treatment, which prevents smoke generation, flash light, and molten metal scattering.

[0006]

[Means for Solving the Problems]

 To achieve the above object, the spheroidizing ladle of the present invention is a crucible type ladle for spheroidizing treatment, which comprises a main body having a portion for installing a spheroidizing agent therein, and a lid covering the main body. A partition plate made of a refractory material for partially partitioning the upper part of the main body is provided.

[0007]

[Action]

 By providing a partition plate made of refractory material, smoke or flash of magnesium oxide is generated only on one side separated by the partition plate during the spheroidizing reaction. Blocking one side prevents smoke and flash from flowing out. It also prevents the molten metal from scattering. Furthermore, the internal pressure in the ladle rises and the yield of magnesium improves.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a plan view of a spheroidizing ladle according to the present invention, and FIG. 2 is a sectional view of FIG. The main body 1 is a crucible-shaped, substantially rectangular parallelepiped, and a tap hole 2 is provided on a part of the outer surface thereof. The outer wall 3 of the main body 1 is made of a steel plate, and the refractory material 4 is provided on the inner surface of the outer wall 3. Further, a weir 5 made of a refractory material is provided in the lower part of the main body 1. The lid 6 covering the main body 1 has a thick plate shape, the outer wall is a steel plate, and the refractory material 4 is provided on the inner surface. The lid 6 is provided with a hot water inlet 9, a slag scraper 10, and a spheroidizing agent inlet 11 with the minimum necessary size. The spheroidizing agent input port 11 is normally closed by a fireproof cloth 13. The partition plate 12 is made of a thick plate refractory material, is vertically attached to the lid 6 so as to project from the lower surface of the lid 6 into the main body 1, and when the lid 6 is put on the main body 1, the partition plate 12 is 12 and the weir 5 are substantially parallel. At this time, the lower surface of the partition plate 12 is above the weir 5, and the distance between the upper surface of the weir 5 and the lower surface of the partition plate 12 in the height direction is the minimum distance that does not prevent reaction diffusion of the spheroidizing agent. To The partition plate 12 may be fixed to the lid 6 or may be detachably installed in the main body 1. If the partition plate 12 can be detached from the main body 1, it is easy to take out the slag attached to the inside of the main body 1 or the lid 6 after removing the partition plate 12.

In the ladle for spheroidizing treatment described above, after the spheroidizing agent is introduced through the spheroidizing agent inlet 11, the spheroidizing agent inlet 11 is closed with a fireproof cloth 13. When the molten metal is received from the inlet 9 into the main body 1, when the molten metal fills up to the lower end of the partition plate 12, smoke of magnesium oxide and flash light are generated only on the side of the spheroidizing agent inlet 11 separated by the partition plate 12. However, since the ladle inlet 11 for the spheroidizing agent is closed with the fireproof cloth 13, smoke and flash can be suppressed without leaking to the outside. Further, by closing the spheroidizing agent charging port 11, there is no fear of the molten metal being scattered during the reaction, and the internal pressure in the ladle is increased, so that the yield of magnesium is improved.

[0010]

[Effect of the device]

 As described above in detail, the present invention is a crucible-type ladle for spheroidizing treatment, which comprises a main body having a portion for installing a spheroidizing agent therein, and a lid for covering the main body. Since a partition plate made of refractory material that partially partitions the spheroidizing material is provided, smoke and flash of magnesium oxide are generated during the spheroidizing reaction only on the sides separated by the partition plate, and the spheroidizing treatment ladle is exposed to the outside. It prevents the smoke and the outflow of flashlight and prevents the molten metal from scattering. Furthermore, the internal pressure in the ladle rises and the yield of magnesium also improves.

[Brief description of drawings]

FIG. 1 is a plan view of a ladle for spheroidizing treatment according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is a bird's-eye view of a conventional ladle for sandwich spheroidizing method.

[Explanation of symbols]

 1: Main body 2: Hot water outlet 3: Outer wall 4: Fireproof material 5: Weir 9: Hot water inlet 10: Scratch opening 11: Spheroidizing agent input port 12: Partition plate 13: Fireproof cloth

Claims (1)

[Scope of utility model registration request] 1. A spheroidizing ladle comprising a crucible-shaped main body having a spheroidizing agent installed therein, and a lid for covering the main body. A refractory material for partially partitioning an upper part of the main body. A ladle for spheroidizing treatment, characterized by having a partition plate made of.