Furnace building mold for vacuum melting furnace

Abstract

The utility model discloses a vacuum melting furnace building mold, which comprises a lower mold, an upper mold and a lower mold, a mounting shell is mounted on the inner side of the lower mold, an induction coil is mounted in the mounting shell, and an iron mold is mounted on the inner side of the mounting shell; the sealing green mud is arranged at the upper end of the lower mold; a mounting groove is formed in the inner side of the sealing green mud, and a storage cup is mounted on the inner side of the mounting groove. The utility model belongs to the technical field of metal powder preparation, and aims to solve the problem of short service life of a smelting crucible in the prior art. The method has the technical effects that the crucible material filled in the induction coil can be shaped through the iron mold, the furnace lining is sintered into the crucible at high temperature in a heat preservation manner, after the crucible is shaped, the iron mold is heated by the induction coil, after the iron mold is subjected to hot melting, the iron mold is melted into molten steel and poured out, and the strength of the crucible wall formed after the furnace lining is sintered is remarkably improved; the problem that a smelting crucible is short in service life is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal powder preparation, in particular to a vacuum melting furnace building mold. Background Art

[0002] Gas atomization is widely used in the preparation of metal powders, especially spherical metal powders. In the gas atomization powder making process, the molten metal liquid needs to flow through the heat-insulating crucible pot body and the guide tube in the tundish first, and then be atomized by the atomizing nozzle.

[0003] During the heating and cooling process of the crucible, the volume of the crucible will expand and contract, which will cause cracks in the crucible used for molten metal. The crucible is not durable and its service life is affected. The existing gas atomization powder making process basically uses corundum crucible for melting and building furnaces. However, the corundum crucible is prone to cracking in a melting environment above 1600℃ for a long time, and its service life is basically around 40 furnaces. Utility Model Content

[0004] To this end, the utility model provides a vacuum melting furnace building mold to solve the above problems in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] According to a first aspect of the utility model, a vacuum melting furnace mold comprises:

[0007] A lower mold, an installation shell is installed inside the lower mold, an induction coil is installed inside the installation shell, and an iron mold is installed inside the installation shell;

[0008] Sealing green mud is arranged at the upper end of the lower mold.

[0009] Furthermore, a mounting groove is provided on the inner side of the sealing green mud, and a storage cup is installed on the inner side of the mounting groove.

[0010] Furthermore, an ejection mechanism is installed on the inner side of the lower end of the lower mold.

[0011] Furthermore, the ejection mechanism includes a top ring, a mounting bracket is installed at the lower end of the top ring, a limiting block is fixed at the upper end of the mounting bracket, and a pressing column is fixed at the lower end of the mounting bracket.

[0012] Furthermore, the upper side of the limit block is elastically connected to the inner cavity of the lower mold via a spring.

[0013] Furthermore, the lower end of the pressing column protrudes from the lower end of the lower mold, and the pressing column and the lower mold form a sliding connection.

[0014] The utility model has the following advantages:

[0015] 1. The crucible material filled in the induction coil can be shaped by the iron mold, and the furnace lining is sintered into a crucible under high temperature. After the crucible is shaped, the iron mold is heated by the induction coil to melt the iron mold. The iron mold is melted into molten steel and poured out. The crucible wall formed after the furnace lining is sintered has significantly improved strength, so as to solve the problem of short service life of the melting crucible;

[0016] 2. The lower end of the pressing column protrudes from the lower end of the lower mold, and the pressing column and the lower mold are slidably connected. After pressing the pressing column, the top ring can be lifted up, thereby facilitating the demoulding of the crucible. The upper side of the limit block is elastically connected to the inner cavity of the lower mold through a spring, so that the limit block can be subjected to elastic force and remain stored downward, thereby preventing the top ring from protruding from the inner wall of the lower mold; BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A front cross-sectional view of a vacuum melting furnace mold provided in some embodiments of the utility model.

[0018] In the figure: 1. lower mold, 2. mounting shell, 3. induction coil, 4. iron mold, 5. sealing green mud, 6. storage cup, 7. mounting groove, 8. top ring, 9. mounting bracket, 10. limit block, 11. pressing column. DETAILED DESCRIPTION

[0019] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] like Figure 1 As shown, a vacuum melting furnace mold in the embodiment of the first aspect of the utility model comprises: a lower mold 1, an installation shell 2 is installed on the inner side thereof, and an induction coil 3 is installed inside the installation shell 2, and an iron mold 4 is installed on the inner side of the installation shell 2. The iron mold 4 can be used to shape the crucible material filled in the induction coil 3, and the furnace lining is sintered into a crucible at a high temperature. After the crucible is shaped, the iron mold 4 is heated by the induction coil 3 to melt the iron mold 4. The iron mold 4 is melted into molten steel and poured out. The crucible wall formed after the furnace lining is sintered has significantly improved strength and a service life of more than 100 furnaces, so as to solve the problem of short service life of the melting crucible;

[0021] The sealing green mud 5 is arranged at the upper end of the lower mold 1. A mounting groove 7 is provided on the inner side of the sealing green mud 5, and a receiving cup 6 is installed on the inner side of the mounting groove 7, so that the molten steel can be directly poured into the receiving cup 6 for recycling, thereby preventing the molten steel from flowing to the outer side of the sealing green mud 5 to cause waste, or the overheated molten steel from causing damage to the operator;

[0022] The ejection mechanism is installed on the inner side of the lower end of the lower mold 1. The ejection mechanism includes a top ring 8. A mounting bracket 9 is installed at the lower end of the top ring 8, and a limit block 10 is fixed to the upper end of the mounting bracket 9. The upper side of the limit block 10 is elastically connected with the inner cavity of the lower mold 1 through a spring, so that the limit block 10 can be subjected to elastic force and remain retracted downward, thereby preventing the top ring 8 from protruding from the inner wall of the lower mold 1. A pressing column 11 is fixed at the lower end of the mounting bracket 9, and the lower end of the pressing column 11 protrudes from the lower end of the lower mold 1, and the pressing column 11 is slidably connected to the lower mold 1, so that the top ring 8 can be lifted up after pressing the pressing column 11, thereby facilitating the demolding of the crucible.

Claims

1. A vacuum melting furnace mold, characterized in that: include: A lower mold (1) having a mounting shell (2) mounted on its inner side, an induction coil (3) mounted inside the mounting shell (2), and an iron mold (4) mounted on the inner side of the mounting shell (2); The sealing green mud (5) is arranged at the upper end of the lower mold (1), a mounting groove (7) is provided on the inner side of the sealing green mud (5), and a storage cup (6) is installed on the inner side of the mounting groove (7).

2. A vacuum melting furnace mold according to claim 1, characterized in that: An ejection mechanism is also installed on the inner side of the lower end of the lower mold (1), and is installed on the inner side of the lower end of the lower mold (1).

3. A vacuum melting furnace mold according to claim 2, characterized in that: The ejection mechanism comprises a top ring (8), a mounting bracket (9) is mounted on the lower end of the top ring (8), a limiting block (10) is fixed on the upper end of the mounting bracket (9), and a pressing column (11) is fixed on the lower end of the mounting bracket (9).

4. A vacuum melting furnace mold according to claim 3, characterized in that: The upper side of the limit block (10) is elastically connected to the inner cavity of the lower mold (1) via a spring.

5. The vacuum melting furnace mold according to claim 3, characterized in that: The lower end of the pressing column (11) protrudes from the lower end of the lower mold (1), and the pressing column (11) and the lower mold (1) are slidably connected.

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