CN217492625U

CN217492625U - Electromagnetic heating and water cooling dual-function casting mold

Info

Publication number: CN217492625U
Application number: CN202221718162.5U
Authority: CN
Inventors: 王岩
Original assignee: Yantai Fuyao Special Guide New Material Technology Co ltd
Current assignee: Yantai Fuyao Special Guide New Material Technology Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-09-27
Anticipated expiration: 2032-07-06

Abstract

The utility model relates to an electromagnetic heating and difunctional casting die of water-cooling belongs to casting method technical field. The electromagnetic heating and water cooling dual-function casting mold comprises a base, an ingot mold body, a pouring pipe and a riser, wherein the ingot mold body and the pouring pipe are installed on the base, the riser is installed above the ingot mold body, and the electromagnetic heating and water cooling dual-function casting mold is characterized in that a spiral water channel is arranged inside the wall of an ingot mold shell of the ingot mold body, and a spiral copper pipe A heated by electromagnetic induction is arranged on the outer side of the ingot mold shell. Meanwhile, the method for using the electromagnetic heating and water cooling dual-function casting mold is also disclosed. The mold can obtain consistent inner and outer crystal grains, and the size of the crystal grains is controlled within a fine range of 500-1000 microns. The inconsistency and coarseness of the crystal grains of the final product caused by the difference between the inside and the outside of the crystal grains are avoided.

Description

Electromagnetic heating and water cooling dual-function casting mold

Technical Field

The utility model relates to an electromagnetic heating and difunctional casting die of water-cooling and casting method belongs to casting method technical field.

Background

The metal target is one of core materials used in the semiconductor field, in particular to a large-tonnage target (more than 1000 kg), and the current domestic targets have some problems: 1. bulk metal purity problems, typically only up to 4N, with 100ppm impurity levels having greater instability; 2. the oxygen content can not be accurately controlled in the conventional open smelting, and volatile impurities can not be removed; 3. because the size of the cast ingot is huge, the core part is continuously high-temperature after casting, the core part is still in a liquid state within 2 hours after casting of more than 1000kg of cast ingot, and crystal grains are still continuously grown, so that the size of the crystal grains of the core part is huge, the size of the crystal grains can reach centimeter-level crystal grains, and the size difference of the inner crystal grains and the outer crystal grains is huge; 4. the pollution of the crucible body to the material at high temperature.

The casting molds used today have the following problems: 1. before use, the mold needs to be baked, such as copper casting, and the mold needs to be baked to 380-400 ℃ by using a ladle baking device; 2. in the operation of the vacuum furnace, because the mold needs to be dried and a double chamber needs to be arranged, the mold can be hung into an ingot mold chamber for assembly after being dried, time and labor are wasted, and the heat efficiency of a natural gas drying bag is low; 3. the ingot mould body needs to be made very thick, latent heat is increased, and the cooling speed is improved a little; 4. the dead head can not be heated, so that the necking of the spindle is deep, the necking can not be cut off, and the yield is reduced.

In order to solve the problems of the existing casting mold in casting large-tonnage target materials, the skilled person in the art is always researching and improving the casting mold.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the electromagnetic heating and water cooling dual-function casting mold is provided, and a corresponding casting method is designed based on the designed casting mold.

The utility model discloses a through following technical scheme, solve above-mentioned technical problem:

the electromagnetic heating and water cooling dual-function casting mold comprises a base, an ingot mold body, a pouring pipe and a riser, wherein the ingot mold body and the pouring pipe are installed on the base, the riser is installed above the ingot mold body, and the electromagnetic heating and water cooling dual-function casting mold is characterized in that a spiral water channel is arranged inside the wall of an ingot mold shell of the ingot mold body, an inlet and an outlet of the water channel are formed in the ingot mold shell, and a spiral copper pipe A heated by electromagnetic induction is arranged on the outer side of the ingot mold shell.

On the basis of the technical scheme, the application makes the following improvements and improvements on the technical scheme:

further, a spiral copper pipe B heated by electromagnetic induction is arranged on the outer side of the riser shell of the riser.

Furthermore, the outer side wall of the pouring tube is provided with a spiral copper tube heated by electromagnetic induction.

Furthermore, a spiral copper pipe heated by electromagnetic induction is arranged on the outer side wall of the base, and a spiral water channel is arranged in the shell wall of the base.

Further, an ingot mould body mounting groove and a pouring tube mounting groove are formed in the base, and a flow channel is formed between the ingot mould body mounting groove and the pouring tube mounting groove.

The spiral copper pipe heated by electromagnetic induction, the spiral copper pipe A and the spiral copper pipe B are provided with corresponding inlets and outlets.

A casting method using a electromagnetic heating and water cooling dual-function casting mold is characterized by comprising the following steps:

step 1, preheating: when smelting and casting are performed, electromagnetic induction heating is started, a spiral through pipe A on an ingot mould body, a spiral copper pipe B on a riser, a spiral copper pipe on a pouring pipe and a spiral copper pipe on a base are subjected to electromagnetic induction heating, the mould is heated to 0-00 ℃, the surface quality of cast ingots after casting is ensured, and the continuous adjustability and temperature monitoring of electromagnetic heating can accurately control the temperature range to fluctuate within a small range, so that the high quality and consistency of the surface quality of the ingots of different heats are controlled;

step 2, casting, controlling the temperature of the melt to be 80-150 ℃ above the melting point by different materials, controlling the casting speed to be within 10-90s according to different components and capacities, injecting the molten metal from a pouring pipe, injecting the molten metal into the ingot mold body through a flow channel on the base, and facilitating the mold filling of the melt and reducing the defects by the bottom casting process;

the table above is: the temperature of the melt is controlled by different materials.

And 3, finishing casting, solidifying the shell on the surface for 10min, finishing feeding at a riser at the top of the cast ingot, stopping electromagnetic induction heating, continuously flowing the inside of the spiral copper pipe subjected to electromagnetic induction heating, increasing the high flow rate of water pressure (the pressure is increased from 0.2MPa to more than 0.5 MPa), improving the heat exchange and enhancing the cooling temperature gradient, and meanwhile, introducing water into the water channel, wherein the water pressure is more than 0.5MPa, so that a continuous cold source is formed. The double-water-channel high-pressure large-flow cooling channel can provide a temperature gradient of 50-80 ℃/mm from the outer wall to the inner wall of the ingot mold, promote the rapid crystallization inside, ensure that the crystal grains inside are not over-large normally and are consistent inside and outside.

The electromagnetic heating and water cooling dual-function casting mold and the casting method have the advantages that:

1. the riser, the ingot mold body and the base of the mold even comprise casting pipes which are all provided with spiral copper pipes heated by electromagnetic induction, the whole set of mold can be integrally assembled when the furnace is initially charged, and thus, one cavity of the vacuum furnace is enough;

2. when smelting is to be carried out and casting is carried out, the electromagnetic induction heating of the coil is started, the mould is heated to 380-400 ℃, and the surface quality of the cast ingot after casting is ensured. Because the continuous adjustability and the temperature monitoring of the electromagnetic heating can accurately control the temperature range to fluctuate in a small range, the high quality and consistency of the surface quality of the spindles in different heats are controlled;

3. after the surface is solidified 10min after the casting is finished, stopping electromagnetic induction heating, meanwhile, continuously flowing in the induction coil and increasing the water pressure high flow rate to form a continuous cold source, promoting the rapid crystallization in the induction coil, and enabling internal crystal grains to be normal and not to grow too large and to be consistent inside and outside; the internal and external of the crystal grains are consistent, so that the forging and crushing difficulty can be reduced; the obtained inner and outer crystal grains are consistent, and the size of the crystal grains is controlled within a fine range of 500-1000 microns, so that the inconsistency and coarseness of the crystal grains of a final product caused by the difference between the inner and outer crystal grains are avoided.

Drawings

Fig. 1 is a schematic perspective view of a casting mold with electromagnetic heating and water cooling dual functions according to the present application;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional view of the ingot mold body;

fig. 4 is a schematic diagram of the structure of the riser.

The reference numbers are recorded as follows: a base-1, an ingot mould body-2, a pouring tube-3, a riser-4,

2.1 parts of ingot mould shell, 2.2 parts of water channel, 2.3 parts of spiral copper pipe A, 4.1 parts of riser shell and 4.2 parts of spiral copper pipe B.

Detailed Description

The following examples are only for illustrating the technical solutions described in the claims with reference to the drawings, and are not intended to limit the scope of the claims.

With reference to fig. 1-4, an electromagnetic heating and water cooling dual-function casting mold comprises a base 1, an ingot mold body 2 and a casting pipe 3 both mounted on the base 1, and a riser 4 mounted above the ingot mold body 2, wherein a spiral water channel 2.2 is arranged inside a shell wall of an ingot mold shell 2.1 of the ingot mold body 2, and a spiral copper pipe a2.3 heated by electromagnetic induction is arranged outside the ingot mold shell 2.1;

wherein, the outer side of a riser shell 4.1 of the riser 4 is provided with a spiral copper pipe B4.2 heated by electromagnetic induction;

the outer side wall of the pouring tube 3 is provided with a spiral copper tube heated by electromagnetic induction;

the outer side wall of the base 1 is provided with an electromagnetic induction heating spiral copper pipe, and a spiral water channel is arranged in the shell wall of the base 1; and the base 1 is provided with an ingot mould body mounting groove and a pouring tube mounting groove, and a flow channel is arranged between the ingot mould body mounting groove and the pouring tube mounting groove.

The casting method of the electromagnetic heating and water cooling dual-function casting mold comprises the following steps:

step 1, preheating: when smelting and casting are carried out soon, electromagnetic induction heating is started, the spiral through pipe A2.3 on the ingot mould body 2, the spiral copper pipe B4.2 on the riser 4, the spiral copper pipe on the pouring pipe 3 and the spiral copper pipe on the base 1 are subjected to electromagnetic induction heating, the mould is heated to 380-plus-400 ℃, the surface quality of cast ingots after casting is ensured, and the continuous adjustability and the temperature monitoring of electromagnetic heating can accurately control the temperature range to fluctuate in a small range, so that the high quality and the consistency of the surface quality of the ingots of different furnaces are controlled;

step 2, casting, controlling the temperature of the melt to be 80-150 ℃ above the melting point by different materials, controlling the casting speed to be within 10-90s according to different components and capacities, injecting the molten metal from a pouring pipe, injecting the molten metal into the ingot mold body 2 through a flow channel on the base, wherein the bottom casting process is beneficial to mold filling of the melt and defect generation is reduced;

and 3, finishing casting, stopping electromagnetic induction heating after the surface is solidified for 10min, continuously flowing the inside of the spiral copper pipe subjected to electromagnetic induction heating, increasing the high flow rate of water pressure (the pressure is increased from 0.2MPa to more than 0.5 MPa), improving the heat exchange and enhancing the cooling temperature gradient, and meanwhile, introducing water into the water channel, wherein the water pressure is more than 0.5MPa, so that a continuous cold source is formed. The double-water-channel high-pressure large-flow cooling channel can provide a temperature gradient of 50-80 ℃/mm from the outer wall to the inner wall of the ingot mold, promote the rapid crystallization inside, ensure that the crystal grains inside are not over-large normally and are consistent inside and outside.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides an electromagnetic heating and water-cooling difunctional casting die utensil, includes base (1), all installs ingot mould body (2) and pouring tube (3) on base (1) to and installation ingot mould body (2) top rising head (4), its characterized in that, the inside spiral helicine water course (2.2) that is provided with of conch wall of ingot mould casing (2.1) of ingot mould body (2), the outside of ingot mould casing (2.1) sets up electromagnetic induction heating's spiral copper pipe A (2.3).

2. The electromagnetic heating and water cooling dual-function casting mold according to claim 1, characterized in that the outside of the riser shell (4.1) of the riser (4) is provided with a spiral copper tube B (4.2) heated by electromagnetic induction.

3. Electromagnetic heating and water cooling dual-function casting mould according to claim 2, characterized in that the outer side wall of the casting tube (3) is provided with a spiral copper tube heated by electromagnetic induction.

4. The electromagnetic heating and water cooling dual-function casting mold according to claim 3, characterized in that the outer side wall of the base (1) is provided with a spiral copper pipe heated by electromagnetic induction, and a spiral water channel is arranged inside the wall of the base (1).

5. The electromagnetic heating and water cooling dual-function casting mold according to claim 4, characterized in that the base (1) is provided with an ingot mold body installation groove and a pouring tube installation groove, and a flow channel is arranged between the ingot mold body installation groove and the pouring tube installation groove.