TWI630365B - Radon device with temperature control design and temperature control method thereof - Google Patents

Abstract

A crucible device having a temperature control design, the crucible device comprising: a crucible body; an induction coil unit surrounding the crucible body and providing a heat source during use for melting a metal material and generating a melting shell a nozzle flange body and a molten soup delivery conduit, the melt delivery conduit is connected to the bottom of the crucible body via the nozzle flange body for conveying the melt in the crucible body; and a temperature control unit The method includes a microprocessor coupled to each other, a heater and a temperature sensor for controlling the curve of the fuse to descend to a predetermined position.

Description

Radon device with temperature control design and temperature control method thereof

The invention relates to a crucible device with temperature control design and a temperature control method thereof, in particular to a crucible device with temperature control design suitable for a molten shell and a temperature control method thereof.

As shown in Fig. 1, it has been conventionally known that the water-cooled copper beryllium 9 has a problem of shelling, and the melted melt 92 above the melted shell 91 is a fine grain region 93; and the melted unmelted melt below the melted shell 91 92 is a coarse grain area 94 and causes the melted melt 92 to fail to flow smoothly.

In order to solve the problem of the shell of the water-cooled copper crucible 9, as shown in FIG. 2, the water-cooled copper crucible 9 is provided with a ceramic heat insulating ring 95, which is located in the body of the water-cooled copper crucible 9 and a nozzle flange body. Between 97, to avoid the loss of heat from the nozzle flange body 97 to the water-cooled crucible body, so that the curve of the shell 91 is lowered to the sides of the nozzle flange body 97, thereby melting the melted soup 92 smoothly flowed out.

While solving the problem of shelling of conventional water-cooled matte, excessively high melt temperatures may cause the nozzle flange to react with the molten compound. For example, the reaction temperature of the nozzle flange body made of graphite and the titanium metal melting compound is about 1050 degrees Celsius, and if the temperature of the melt near the flange body of the nozzle exceeds 1050 degrees Celsius, graphite and titanium metal are caused. The reaction forms a titanium carbide (TiC) compound, which in turn affects the quality of the titanium metal melt. Moreover, the temperature of the melt is not controlled within an ideal temperature range, and even in different smelting processes, the temperature of the melt may vary greatly. For example, the temperature difference of the molten titanium alloy in different melting processes may be greater than 300. Above the degree. As a result, the curve of the molten shell of the melt will become uncontrollable, thereby affecting the subsequent process. Casting quality.

In view of this, there is a need to provide a temperature control method for a crucible having a temperature-controlled design and a temperature control method for the shell to solve the aforementioned problems.

The main object of the present invention is to provide a crucible device with a temperature control design and a temperature control method thereof for controlling the melting of the shell curve to a predetermined position, so as to break the shell while maintaining the quality of the melt and improving the utilization of the melt.

In order to achieve the above object, the present invention provides a crucible device having a temperature control design, the crucible device comprising: a crucible body; an induction coil unit surrounding the crucible body and providing a heat source for use in a metal material during use Melting and forming a melted melted soup; a nozzle flange body and a molten soup delivery conduit, the melt delivery conduit is connected to the bottom of the crucible body via the nozzle flange body for transporting the crucible body And a temperature control unit comprising a microprocessor coupled to each other, a heater and a temperature sensor, wherein: the temperature sensor is configured to measure the boundary of the nozzle flange body adjacent to the melt Temperature, the heater is used for inductively heating the nozzle flange body, and the microprocessor adjusts the power of the heater according to the boundary temperature of the nozzle flange body to control the boundary temperature of the nozzle flange body A predetermined temperature is reached, thereby controlling the melting of the melting shell to a predetermined position.

When the melting temperature of the melt (for example, titanium metal) is greater than the reaction temperature of the nozzle flange body (for example, graphite) and the molten material generating compound, preferably the predetermined temperature is less than and close to the nozzle flange body and the The melt gives the reaction temperature of the compound. Since the boundary temperature of the nozzle flange body (controlled to a predetermined temperature) is controlled to be less than a reaction temperature of the nozzle flange body and the melt-generating compound, the predetermined temperature of the nozzle flange body can avoid causing the nozzle flange The body reacts with the melt to form a compound, thereby ensuring the quality of the melt.

When the temperature of the shell of the melt (for example, titanium metal) is less than the reaction temperature of the nozzle flange body (for example, tungsten steel) and the melt-generating compound, preferably the predetermined temperature is less than and close to the melt shell of the melt. temperature. Due to the predetermined temperature The degree is less than and close to the melt shell temperature of the melt, so that the curve of the melt shell of the melt can be closer to both sides of the nozzle flange body. When the curve of the melt shell of the melt is closer to both sides of the nozzle flange body, the utilization of the melt is improved.

The above and other objects, features, and advantages of the present invention will become more apparent from the accompanying drawings.

1‧‧‧坩埚 device

1'‧‧‧坩埚 device

1"‧‧‧坩埚 device

10‧‧‧ molten soup delivery catheter

11‧‧‧Flame shell

12‧‧‧ molten soup

13‧‧‧ Fine grain area

14‧‧‧Rough grain area

15‧‧‧Insulation ring

16‧‧‧坩埚Ontology

161‧‧‧ bottom

17‧‧‧Nozzle flange body

18‧‧‧Induction coil unit

19‧‧‧temperature control unit

19”‧‧‧temperature control unit

191‧‧‧Microprocessor

192‧‧‧heater

193‧‧‧temperature sensor

194‧‧‧Cooling waterway

8‧‧‧ casting mould

9‧‧‧Water-cooled copper

91‧‧‧Flame shell

92‧‧‧ molten soup

93‧‧‧ Fine grain area

94‧‧‧Rough grain area

95‧‧‧Ceramic insulation ring

96‧‧‧坩埚Ontology

97‧‧‧Nozzle flange body

1 is a schematic cross-sectional view of a conventional water-cooled copper crucible; FIG. 2 is a schematic cross-sectional view of another conventional water-cooled copper crucible, which is shown with a ceramic thermal insulation ring; FIG. 3 is a fusion of the first embodiment of the present invention. FIG. 4 is a cross-sectional view of a crucible device with temperature control design of the shell; FIG. 4 is a comparison diagram of a melting shell curve with temperature control design (left image) and no temperature control design (right image) according to the first embodiment of the present invention; A schematic cross-sectional view of a crucible device having a temperature-controlled design of a frit according to a second embodiment of the present invention; FIG. 6 is a temperature-controlled design (left image) and a temperature-free design (right image) according to a second embodiment of the present invention; A comparison diagram of a melting shell curve; and FIG. 7 is a schematic cross-sectional view of a crucible device having a temperature-controlled design of a molten shell according to a third embodiment of the present invention.

Referring to Figure 3, there is shown a crucible apparatus 1 having a temperature controlled design of a frit according to a first embodiment of the present invention. The crucible device 1 is used to manufacture a melt 12 that can be applied to a casting process, such as to a casting mold 8. In the present embodiment, the molten stone 12 is exemplified by a titanium molten metal.

The cymbal device 1 includes a cymbal body 16, an induction coil unit 18, a temperature control unit 19, a nozzle flange body 17, and a melt delivery conduit 10.

The crucible body 16 is a water-cooled crucible body. The induction coil unit 18 surrounds the crucible body 16 and, when in use, provides a heat source for melting a metal material and producing a melted melt. For example, the induction coil unit 18 inductively heats a rod of metal material located within the crucible body 16 to produce a melt soup 12. In the present embodiment, the melt 12 in the crucible body 16 can be produced by inductively heating an active metal material rod (for example, a rod of titanium metal material) by an induction coil of a high-frequency coil (for example, 30 kW, 8 kHz). Since the crucible body 16 is of a water-cooled design, the molten stone 12 is formed with a frit 11 in which the melted melt 12 above the frit 11 is a fine grain region 13 and which is not melted under the frit 11 The soup 12 is a rough grain area 14.

The melt delivery conduit 10 communicates with the bottom portion 161 of the crucible body 16 via the nozzle flange body 17 for conveying the melt 12 in the crucible body 16. The melt transfer conduit 10 can be made of a heat resistant material such as graphite or tungsten steel. In the present embodiment, the nozzle flange body 17 is made of a heat-resistant material of graphite.

The temperature control unit 19 includes a microprocessor 191, a heater 192 and a temperature sensor 193 coupled to each other. For example, the microprocessor 191 is electrically connected to the heater 192 and the temperature sensor 193. The temperature sensor 193 is configured to measure the boundary temperature of the nozzle flange body 17 near the melt 12. The heater 192 is used to inductively heat the nozzle flange body 17. The microprocessor 191 adjusts the boundary temperature of the nozzle flange body 17 and adjusts the power of the heater 192 to control the boundary temperature of the nozzle flange body 17 to a predetermined temperature, thereby controlling the fuse shell. The curve of 12 is lowered to a predetermined position to break the shell while maintaining the quality of the melt 12 and increasing the utilization of the melt 12. For example, the temperature sensor 193 can be a thermo couple, which is directly embedded in the nozzle flange body 17 for measuring the edge of the nozzle flange body 17. Boundary temperature. The heater 192 is an adjustable power induction coil for inductively heating the boundary temperature of the nozzle flange body 17 to the predetermined temperature. For example, the power of the induction coil is 5 KW, the boundary temperature of the nozzle flange body 17 reaches 1000 degrees Celsius; the power of the induction coil is 6 KW, the boundary temperature of the nozzle flange body 17 reaches 1100 degrees Celsius, and the like. The induction coil is a high frequency coil, for example 400 KHz. The microprocessor 191 may further include a proportional integral derivative (PID) controller for outputting the power of the induction coil according to the predetermined temperature, and inductively heating the boundary temperature of the nozzle flange body 17 to the predetermined temperature.

The lower limit value of the predetermined temperature T ₀ of the nozzle flange body 17 is greater than or equal to the base temperature T ₁ of the shell of the melted shell 11 of the melt 12, and the base temperature T ₁ means less than the melted shell 11 of the melt 12 The temperature T ₂ is a temperature drop gradient of about 200 degrees (for example, the melting point temperature of the titanium metal is about 1680 degrees Celsius, and the temperature T ₂ of the shell 11 of the titanium melting furnace is about 1200 degrees Celsius, when the nozzle flange body 17 has a predetermined temperature. When T ₀ exceeds the base temperature T ₁ by 1000 degrees Celsius, the center of the curve of the melted shell 11 moves downward to cause a shell break. Therefore, the predetermined temperature T0 of the nozzle flange body 17 is greater than the temperature T _{2 of the} shell 11 of the melt 12 minus 200 degrees (ie, T ₀ ≧T ₁ =T ₂ -200), so that the shell 11 can be broken. shell. 4 is a comparison diagram of a melting shell curve having a temperature control design (left image) and a temperature control design (right image) according to a first embodiment of the present invention, and the left diagram shows a temperature control design such that the nozzle flange body 17 exceeds the predetermined temperature T ₀ of the basic temperature T _1, except that the center of the curve of the fuse housing 11 moves downwardly generated outside the shell breaking, and a right half and curves Zhizuo portion of the fuse housing 11 is also lowered to close Both sides of the nozzle flange body, thereby allowing the melted melt 12 to flow smoothly; and the right figure shows that the prior art shell 91 does not produce a shell. In another embodiment, if the melt 12 is changed to a molten metal material other than the titanium metal melt, the lower limit of the predetermined temperature T ₀ is adjusted depending on the molten material, mainly based on the temperature gradient. The experimental results are used to calculate the lower limit.

However, when the temperature of the shell 11 of the melt 12 is greater than the reaction temperature of the nozzle flange body 17 and the compound produced by the melt 12, the nozzle flange The upper limit of the predetermined temperature of the body 17 is the reaction temperature at which the nozzle flange body 17 and the melt 12 produce a compound (for example, the reaction temperature of the nozzle flange body 17 made of graphite and the titanium metal melt-generating compound is about Above 1050 degrees Celsius). Preferably, the predetermined temperature is less than and close to a reaction temperature at which the nozzle flange body 17 and the melt 12 produce a compound, for example, the predetermined temperature is less than and close to 1050 degrees Celsius. Since the boundary temperature of the nozzle flange body 17 (controlled to a predetermined temperature) is controlled to be smaller than the reaction temperature of the nozzle flange body 17 and the titanium metal melting compound, the predetermined temperature of the nozzle flange body 17 can be avoided. The graphite is reacted with titanium metal to form a titanium carbide (TiC) compound, thereby ensuring the quality of the melt 12.

Moreover, due to the boundary temperature of the nozzle flange body 17 (controlled to a predetermined temperature), and thus the melting temperature is also controlled within an ideal temperature range, the melt temperature change may be very different in different smelting processes. Small, for example, the temperature difference of the titanium molten steel in the different melting process will be less than 50 degrees. In this way, the curve of the melt shell of the melt 12 will be made controllable, thereby improving the casting quality of the subsequent process.

Referring to FIG. 3 again, in another embodiment, the nozzle flange body 17 is made of a heat resistant material of tungsten steel. When the temperature of the shell of the melt 12 is less than the reaction temperature of the nozzle flange body 17 made of the tungsten steel and the compound produced by the melt 12, the upper limit of the predetermined temperature of the nozzle flange body 17 may be the melting Soup 12's shell 11 temperature. Preferably, the predetermined temperature is less than and close to the temperature of the shell 11 of the melt 12. For example, the temperature of the shell of the titanium frit (about 1200 degrees Celsius) is less than the reaction temperature of the nozzle flange body 17 made of the tungsten steel and the compound produced by the melt 12. Since the predetermined temperature is less than and close to the shell temperature of the titanium frit (about 1200 degrees Celsius), the left and right halves of the curve of the shell 11 of the titanium frit may be closer to the nozzle flange. On both sides of 17. When the left and right halves of the curve of the shell 11 of the melt 12 are closer to the sides of the nozzle flange body 17, the fine grain region 13 of the molten melt 12 that has melted above the shell 11 is 13 The larger, the thicker melt 12 that is not melted below the shell 11 The smaller the rough grain region 14 is, the more the utilization of the melt 12 is increased, but the shell 11 is still required as a protective layer.

Referring to Figure 5, there is shown a schematic view of a crucible apparatus having a temperature controlled design of a frit according to a second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that the crucible device 1' of the second embodiment further includes an insulating ring 15 between the crucible body 16 and the nozzle flange body 17 for relieving the nozzle. The heat of the flange body 17 is lost to the crucible body 16. The insulating ring 15 can be made of a ceramic material. The temperature control unit 19 also includes a microprocessor 191, a heater 192, and a temperature sensor 193. The temperature sensor 193 is configured to measure the boundary temperature of the nozzle flange body 17 near the melt 12. The heater 192 is used to inductively heat the nozzle flange body 17. The microprocessor 191 adjusts the boundary temperature of the nozzle flange body 17 and adjusts the power of the heater 192 to control the boundary temperature of the nozzle flange body 17 to a predetermined temperature to ensure the melt. The quality of 12 and assist in achieving the shell of the melted soup. Since the heat of the nozzle flange body 17 is slowed down to the crucible body, the boundary temperature of the nozzle flange body 17 can be heated to a predetermined temperature with a small power. 6 is a comparison diagram of a melting shell curve having a temperature control design (left image) and a temperature control design (right image) according to a second embodiment of the present invention, which shows a temperature control design such that the curve of the molten shell 11 is left The half and right halves can be lowered closer to the sides of the nozzle flange body 17.

Referring to Figure 7, there is shown a schematic view of a crucible device 1" having a temperature-controlled design of a frit according to a third embodiment of the present invention. The difference between the third and second embodiments is that the temperature control unit 19" of the third embodiment Further, a cooling water path 194 is included for removing heat of the nozzle flange body, wherein the temperature control unit 19" having the cooling water path 194 and the heater 192 can more quickly and accurately make the boundary of the nozzle flange body 17 The temperature reaches the predetermined temperature.

In addition, the present invention further provides a temperature control method for a molten shell, comprising the steps of: providing a body, a nozzle flange body, and a molten steel delivery conduit, wherein the melt delivery conduit is connected to the nozzle flange body via the nozzle flange body The 坩 a bottom of the body; inductively heating a rod of active metal material in the body to produce a melt, the melt forming a shell; measuring the temperature of the nozzle flange adjacent to the boundary of the melt; Measure the boundary temperature of the nozzle flange body to inductively heat the nozzle flange body and control the boundary temperature of the nozzle flange body to a predetermined temperature, wherein: when the melt shell temperature is greater than the nozzle protrusion The predetermined temperature is less than and close to a reaction temperature of the nozzle flange body and the molten material generating compound, and the predetermined temperature is greater than the melt shell temperature of the melt minus 200 degrees. And when the melt shell temperature of the melt is less than a reaction temperature of the nozzle flange body and the melt-generating compound, the predetermined temperature is less than a melting shell temperature of the melt, and the predetermined temperature is greater than a melting shell of the melt The temperature is reduced by 200 degrees.

When the melting temperature of the melt (for example, titanium metal) is greater than the reaction temperature of the nozzle flange body (for example, graphite) and the molten material generating compound, preferably the predetermined temperature is less than and close to the nozzle flange body and the The melt gives the reaction temperature of the compound. Since the boundary temperature of the nozzle flange body (controlled to a predetermined temperature) is controlled to be less than a reaction temperature of the nozzle flange body and the melt-generating compound, the predetermined temperature of the nozzle flange body can avoid causing the nozzle flange The body reacts with the melt to form a compound, thereby ensuring the quality of the melt.

When the temperature of the shell of the melt (for example, titanium metal) is less than the reaction temperature of the nozzle flange body (for example, tungsten steel) and the melt-generating compound, preferably the predetermined temperature is less than and close to the melt shell of the melt. temperature. Since the predetermined temperature is less than and close to the melt shell temperature of the melt, the curve of the melt shell of the melt may be closer to both sides of the nozzle flange body. When the curve of the melt shell of the melt is closer to both sides of the nozzle flange body, the utilization of the melt is improved.

In the above, it is merely described that the present invention is an embodiment or an embodiment of the technical means for solving the problem, and is not intended to limit the scope of implementation of the present invention. That is, the equivalent changes and modifications made in accordance with the scope of the patent application of the present invention or the scope of the invention are covered by the scope of the invention.

Claims (10)

A crucible device having a temperature control design, the crucible device comprising: a crucible body; an induction coil unit surrounding the crucible body and providing a heat source during use for melting a metal material and generating a melting shell a nozzle flange body and a molten soup delivery conduit, the melt delivery conduit is connected to the bottom of the crucible body via the nozzle flange body for conveying the melt in the crucible body; and a temperature control unit The method includes a microprocessor, a heater, and a temperature sensor coupled to each other, wherein: the temperature sensor is configured to measure a temperature of a boundary of the nozzle flange body adjacent to the melt, and the heater is used for induction heating The nozzle flange body, the microprocessor adjusts the boundary temperature of the nozzle flange body and adjusts the power of the heater to control the boundary temperature of the nozzle flange body to reach a predetermined temperature, thereby controlling the The melt shell curve is lowered to a predetermined position; when the melt shell temperature is greater than a reaction temperature of the nozzle flange body and the melt-generating compound, the predetermined temperature is less than the nozzle flange body and the The reaction temperature soup generating compound; and when the molten metal is less than the melting temperature of the nozzle housing flange body temperature of the compound reacts with the molten metal when the molten metal is less than the predetermined temperature is the melting temperature of the shell. A tamping device with a temperature control design as described in claim 1, wherein the nozzle flange body is made of graphite or tungsten steel. The temperature control design of the crucible device according to claim 1, further comprising: an insulation ring located between the crucible body and the nozzle flange body for relieving heat of the nozzle flange body Lost to the body. The enthalpy device with temperature control design according to claim 3, wherein the temperature control unit further comprises a cooling water passage for removing heat of the nozzle flange body. The temperature control design of the crucible device according to claim 1, wherein the temperature sensor is a thermocouple directly embedded in the nozzle flange body; and the heater is an adjustable induction coil . A temperature control method for a crucible device, comprising the steps of: providing a crucible body, a nozzle flange body and a molten soup delivery conduit, wherein the melt delivery conduit communicates with the bottom of the crucible body via the nozzle flange body; Inductively heating a rod of active metal material in the body to produce a melt, the melt forming a shell; measuring the temperature of the nozzle flange adjacent to the boundary of the melt; and according to the measurement a boundary temperature of the nozzle flange body to inductively heat the nozzle flange body and control a boundary temperature of the nozzle flange body to a predetermined temperature, thereby controlling a curve of the melt shell to drop to a predetermined position, wherein: The melted shell temperature is greater than a reaction temperature of the nozzle flange body and the melt-generating compound, the predetermined temperature being less than a reaction temperature of the nozzle flange body and the melt-generating compound; and when the melted shell is melted When the temperature is less than the reaction temperature of the nozzle flange body and the melt-generating compound, the predetermined temperature is less than the melt shell temperature of the melt. The temperature control method of the device according to claim 6, wherein the nozzle flange body is made of graphite, and the melt shell temperature is greater than a reaction temperature of the nozzle flange body and the molten material generating compound. And the predetermined temperature is less than and close to a reaction temperature of the nozzle flange body and the molten material generating compound. The temperature control method of the device according to claim 7, wherein the molten soup is a titanium metal melting soup, and the melting shell temperature is 1200 degrees Celsius, The reaction temperature of the nozzle flange body made of graphite and the titanium metal melt-generating compound is 1050 degrees Celsius or more, and the predetermined temperature is less than and close to 1050 degrees Celsius. The temperature control method of the device according to claim 6, wherein the nozzle flange body is made of tungsten steel, and the melt shell temperature is less than the reaction between the nozzle flange body and the molten material generating compound. Temperature, and the predetermined temperature is less than and close to the shell temperature. The temperature control method of the device according to claim 9, wherein the molten soup is a titanium metal melting soup, the melting shell temperature is 1200 degrees Celsius, and the melting temperature of the titanium metal melting soup is less than the tungsten steel. The temperature at which the nozzle flange body is formed and the titanium metal melt to produce a compound, and the predetermined temperature is less than and close to 1200 degrees Celsius.