KR101902177B1 - Glass beads Welding Method of Detonate Apparatus for Removal of Fixtures in Vacuum environments - Google Patents

Abstract

The present invention discloses a method of glass bead welding an ignition device for fixture separation in a vacuum atmosphere, wherein the method is capable of preventing a surface blackening phenomenon or a glass bead heterogeneity solidifying phenomenon by removing various inert gases generated from a metal surface and glass beads in the process of glass bead melting an ignition device in a high temperature furnace. To this end, the method of glass bead welding the ignition device for fixture separation of the present invention comprises: assembling the ignition device so that a rubber washer, a rubber moisture-proof plate, a radio-frequency attenuator and a rubber support are combined between a frame and a pin; injecting the assembled ignition device into the high temperature furnace; and heating the assembled ignition device injected into the high temperature furnace to melt glass beads inserted between the pin and the frame to achieve the purposes of electrical insulation, sealing and fixing, wherein the heating process in the high temperature furnace is continuously performed through a pre-high vacuum heating section (STEP1), a low vacuum heating section (STEP1), and a post-high vacuum heating section (STEP1). Therefore, the method according to the present invention has useful effects that the method not only can prevent blackening contamination of the ignition device by discharging a total amount of inert gases generated from the metal surface and glass beads in a high temperature atmosphere in spite of operation of the high temperature furnace for melting the glass beads, but also enables a high quality ignition device to be manufactured by completely removing up to gases generated from an inner layer of the glass beads.

Description

Technical Field [0001] The present invention relates to a glass beads deposition method, and more particularly,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass bead welding method for ignition of a fixture in a vacuum atmosphere, and more particularly, to a glass bead welding method for ignition fixture for fixation in a vacuum atmosphere in which the vacuum degree is varied in a time-

Conventionally, an ignition device for separating a fixed material has been proposed, and a representative example thereof can be found in Korean Patent Laid-Open Publication No. 10-2011-0010915 (entitled "Ball Type Low-Impact Separator" have.

As shown in FIG. 1, this reference is made up of a rubber bead 1121h, a high frequency attenuator 1120m, a rubber base 1121d, a header 1121d, and the like, with the glass bead 1121i sandwiched between the pins 1121g. And the glass beads 1121i shown in Fig. 2 are melted to be electrically insulated, bonding the pin 1121g to the main body of the ignition device, and securing the airtight state Respectively. The ignition device that has undergone such a high temperature treatment process is inevitably contaminated with the surface of the product partly by black due to contact with the inert gas in a high temperature atmosphere. Therefore, a post-machining process for sanding and nickel plating should be added.

As a result, not only the productivity is lowered but also the product dimension becomes unstable during the surface treatment by such sanding and nickel plating. In addition, as shown in the photograph of FIG. 4, Resulting in problems such as a reduction in internal pressure.

Further, in order to perform the melting process using the high-temperature furnace, the equipment cost and the electric power cost are added, and the glass beads 1121i are melted and the bubbles are partially generated to lower the electrical characteristics. And the glass beads 1121i are melted at the same time.

Korean Patent Laid-Open No. 10-2011-0010915 (entitled "Ball Type Low Impact Separation Device")

In order to solve this problem, various inert gases generated from the metal surface and the glass beads in the process of melting the glass bead in the ignition device at a high temperature are introduced into a vacuum pump The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of fusing a glass bead of an ignition device for fixing a fixture in a vacuum atmosphere so that surface blackening phenomenon or glass bead heterogeneity solidification phenomenon can be prevented.

In order to achieve the above object, according to the present invention, an outer connector is connected to one end of a pin, and the other end of the pin is provided with a gunpowder accommodating chamber accommodating a heating wire and an assisting agent, , A rubber damping plate, a high frequency attenuator, and a rubber base are assembled so as to be combined with each other, and then heated in a high temperature furnace so that the insulated glass beads are melted for electrical insulation and sealing between the fin and the frame,

A method of fusing a glass bead for a fixation device for fixing a fixture in a vacuum atmosphere in which an electric high vacuum heating section, a low vacuum heating section, and a late high vacuum heating section are continuous in the heating process in the high temperature furnace.

Accordingly, in spite of the operation of the high temperature furnace for melting the glass beads, the present invention allows the inert gas generated from the metal surface and the glass bead to be discharged in the high temperature atmosphere by controlling the pressure in the high temperature furnace by the vacuum pump The blackening contamination of the ignition device can be prevented and the gas generated in the inner layer of the glass bead can be completely removed. Thus, the sanding process and the nickel plating process for peeling the blackening surface are omitted, Can be greatly improved,

Since the surface post-treatment process such as sanding and nickel plating process is unnecessary, the dimensional stability of the product can be maintained, the physical properties of the melted glass beads become uniform, and the problem of degradation of electrical characteristics, So that it is possible to provide a high-quality ignition device.

1 is a longitudinal sectional view showing a conventional ignition device for detaching fixtures.
2 is a photograph showing a glass bead used in an ignition device;
3 is a photograph showing a carbonized state of a frame which has been subjected to conventional high-temperature treatment.
FIG. 4 is a photograph showing the state of a conventional sand-processed pin, a glass bead, and a frame. FIG.
5 is a diagram showing all the steps of a glass bead welding method for ignition device for fixture separation in a vacuum atmosphere according to the present invention.
6 is a photograph showing the appearance of the ignition device according to the present invention.
7 is a photograph showing a state in which a pin is fixed by a glass bead in a defect-free state according to the present invention.
8 is a photograph showing a state in which a glass bead and a pin are separated due to excessive pressure in a pressure test process.
9 is a pressure resistance test result table that withstands the force which the glass screw is hardened after being welded and hardened by the hydraulic equipment in the second low vacuum heating section (STEP5).
Fig. 10 is a table of the internal pressure test result of the ignition device. Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the melting process of the glass bead, in which the plurality of fins of the ignition device are insulated from the main body of the ignition device and are fixed in a hermetic state, a vacuum is applied together with a high temperature atmosphere to discharge the inert gas, By varying the degree of vacuum according to the time series, the gas generated from the metal surface and the glass beads in the melted state is smoothly discharged, and the shape stability is achieved.

FIG. 2 shows a glass bead for explaining the present invention, and FIG. 1 shows a state where such a glass bead is bound between a pin and a frame. As can be seen from this figure, a pin is connected at one end to an external connector, and a gunpowder accommodating chamber is disposed at the other end of the pin to accommodate a heating wire and an assisting drug, and a frame A glass bead is inserted between the pin and the frame for sealing and a glass bead is melted by inserting the glass bead into a high temperature melting furnace,

In the heating process in the high-temperature furnace, the high-vacuum heating period, the low-vacuum heating period, and the late high-vacuum heating period are continued in a time-series manner, The gas causing bubbles of the glass beads is discharged to prevent the blackening phenomenon on the metal surface and to homogenize the glass beads during curing.

FIG. 5 is a graph showing the degree of vacuum, the temperature, and the treatment time in the high temperature furnace according to the present invention.

As can be seen from the above, according to the present invention, the heating temperature and the degree of vacuum are controlled by dividing the high-temperature heating period (STEP1) and the first stable period (STEP2) in the high temperature furnace.

That is, in the present invention, the inner temperature and the degree of vibration of the high-temperature furnace are set to a specific range in a state where the internal parts are assembled and the glass screws are filled between the fin and the frame.

To this end, the present invention first activates the vacuum pump after the ignition device is turned on so that the degree of vacuum of the high-temperature furnace is in the range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr.

In this state, an electric high-vacuum heating section (STEP 1) is performed in which the surface of the ignition device frame surface is heated from room temperature to 400 ° C. to 500 ° C. while gradually raising the temperature for 25 minutes to 35 minutes. In this process, an inert gas is generated on the frame surface of the ignition device, and the inert gas is exhausted to the outside by the vacuum pump, so that blackening of the frame metal surface is prevented.

In the present invention, while the vacuum pump is operated so that the vacuum degree of the high temperature furnace is maintained in the range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr, the surface temperature of the ignition device frame is the temperature of the electric high vacuum heating section STEP 1 Heating is carried out so as to maintain the temperature at 400 to 500 DEG C, and an inactive gas generated on the frame metal surface of the ignition device is subjected to an electric first stable period STEP2 in which this state is maintained for 15 minutes to 25 minutes by a vacuum pump To be discharged.

In this way, a single high-vacuum heating section (STEP1) is performed for the sake of convenience in performing the electric high-vacuum heating section. However, it may be further divided into a plurality of temperature sections. In this case, And it is preferable to set a stable section for stabilizing the metal structure by maintaining the temperature of the previous section between the sections.

In the present invention, the glass beads are melted by further increasing the heating temperature in a state of lowering the internal vacuum degree of the high temperature furnace, so that the gas generated in the glass beads is discharged in a low vacuum state while maintaining the shape stability of the melted glass beads .

That is, in the present invention, since the inert gas generated from the metal surface of the frame is largely removed by the electric high-vacuum heating period STEP1, the amount of gas to be discharged is not large. In this state, The molten glass beads may be unstable due to the suction force of the vacuum if they are kept in a high vacuum state as in the case of the glass beads. Therefore, only the inert gas of the glass beads is discharged by converting the high vacuum state to the low vacuum state.

In the present invention, the temperature of the conventional 400 ° C to 500 ° C is increased to 600 ° C to 700 ° C while the vacuum degree of the high temperature furnace is maintained in the range of 150 Torr to 675 Torr, , A first low-vacuum heating section (STEP3)

A second low-vacuum heating section STEP5 for heating the substrate at a temperature ranging from 600 DEG C to 700 DEG C to a temperature of 920 DEG C to 1020 DEG C for 25 minutes to 35 minutes while maintaining the vacuum within a range of 150 Torr to 675 Torr, (STEP 7) in which the temperature of 920 ° C to 1020 ° C is lowered to a temperature of 550 ° C to 650 ° C for 4 minutes to 8 minutes while maintaining the temperature in the range of 675 to 675 Torr.

In the present invention, since the glass beads are melted in the second low-vacuum heating section (STEP 5) and the degree of vacuum is maintained in the range of 150 Torr to 675 Torr, the negative pressure applied to the glass beads in the molten state is not large, The gas generated during the melting and molding process is discharged to the outside by the low vacuum pressure of the vacuum pump.

In the present invention, in order to obtain the melting state of the glass beads in such a low vacuum heating section, a high temperature of about 1000 DEG C is applied in the second low vacuum heating section STEP5, and in the first low vacuum heating section STEP3 before and after the second low vacuum heating section STEP5, (STEP3) and the second low vacuum heating section (STEP3) so that the stress distribution of the frame metal structure is stabilized even in the case of such abrupt temperature change, (STEP 5) and the third low vacuum heating section STEP 7 while maintaining the previous temperature in the second stable section STEP 4 between the vacuum heating section STEP 5 and the low- Which is heated for 4 minutes to 6 minutes while maintaining the previous temperature after the third low vacuum heating section (STEP7), while maintaining the previous temperature in the third stable section (STEP6) A stable period STEP8 is formed.

In the present invention, the high-temperature state is maintained while the temperature of the high-temperature furnace is maintained, and the residual gas which has not been sufficiently removed in the first, second, and third low-vacuum heating sections STEP1, STEP5, and STEP7 is discharged So that the ideal state of the glass beads is obtained and the blackening phenomenon of the metal surface is completely prevented.

That is, in the present invention, while the vacuum degree of the high temperature furnace is lowered again to the range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr, the heating temperature in the range of 550 ° C. to 650 ° C. is maintained at 350 ° C. to 650 ° C. for 30 seconds to 1 minute 30 seconds, (STEP 9) in which the temperature is lowered to a temperature in the range of 450 to 450 ° C.

Next, the present invention is characterized in that the degree of vacuum of the high temperature furnace is maintained in the range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr while the temperature of 350 ° C. to 450 ° C., which is the temperature of the previous section (STEP 9) STEP 10) for 3 to 6 minutes.

Subsequently, while the vacuum degree of the high temperature furnace is maintained in the range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr, the heating temperature in the range of 350 ° C. to 450 ° C. is maintained in the range of 50 ° C. to 70 ° C. for 30 seconds to 1 minute 30 seconds The second high-vacuum heating period (STEP 11) is performed.

After this, the sixth stable section (STEP 12) maintaining the temperature in the range of 50 ° C to 70 ° C for 7 minutes to 13 minutes while maintaining the vacuum degree of the high temperature furnace within the range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr, A series of ignition device glass bead welding methods according to the present invention is completed.

In addition, the electric high-vacuum heating section STEP1 of the present invention according to the present embodiment provides one time series section (corresponding to STEP1), the low vacuum heating sections STEP3, 5 and 7 give three time series sections, In the high vacuum heating section, two time series (STEP9 and STEP11)

The number of STEP1, STEP9 and STEP9, and the number of time series STEP3, STEP7 of the low vacuum heating section STEP3, STEP7, STEP7 are set appropriately according to the situation, considering the balance of productivity and quality of the process. And the present invention is an embodiment.

Although the first, second, third, fourth, and fifth stable sections STEP2, STEP4, STEP6, STEP8, STEP10 and STEP12 are disposed in all the heating sections, this is not an indispensable step, Therefore, some or all of them may be omitted.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Example 1:

After the ignition device is put into the high temperature furnace, the vacuum pump is operated so that the degree of vacuum of the high temperature furnace is 2.0 × 10 ^-5 Torr.

In this state, an electric high-vacuum heating section (STEP1) for heating the surface of the ignition device frame for 30 minutes while gradually increasing the temperature from room temperature to 450 DEG C is performed,

The vacuum pump is operated so that the vacuum degree is maintained at 2.00 x 10 < ^-8 > Torr while the surface temperature of the ignition device frame is heated to 450 DEG C, and the second stable section STEP2 is performed to maintain this state for 20 minutes.

A first low-vacuum heating section (STEP3) for lowering the degree of vacuum of the high-temperature furnace to 150 Torr and heating it to reach a temperature of 650 DEG C for 10 minutes,

A second stabilization period (STEP4) in which the vacuum degree is maintained at 150 Torr and the temperature of 650 DEG C is maintained for 30 minutes,

A second low-vacuum heating section STEP5 for heating the temperature of 650 DEG C to reach 970 DEG C over 30 minutes while maintaining the vacuum degree at 150 Torr,

A third stable section STEP 6 in which the vacuum degree is maintained at 150 Torr and maintained at 970 DEG C for 20 minutes,

A third low vacuum heating section STEP7 for lowering the temperature of 970 deg. C to 600 deg. C while maintaining the vacuum degree at 150 Torr,

A fourth stable period STEP8 in which the temperature is maintained at 600 DEG C for 5 minutes while maintaining the vacuum degree at 150 Torr,

A first high vacuum heating period (STEP 9) in which the vacuum degree is lowered to 2.0 × 10 ^-5 Torr and then the temperature is lowered from 600 ° C. to 400 ° C. for 1 minute,

(STEP 10) in which the temperature is maintained at 400 캜 for 5 minutes while maintaining the vacuum degree at 2.0 × 10 ^-5 Torr,

A second high vacuum heating period STEP 11 in which the temperature is lowered from 400 ° C. to 60 ° C. for 1 minute while maintaining the vacuum degree at 2.0 × 10 ^-5 Torr,

And a sixth stable section (STEP 12) in which the temperature of 60 ° C was maintained for 10 minutes while maintaining the vacuum degree at 2.0 × 10 ^-5 Torr.

The appearance of the ignition device thus obtained is illustrated in the photograph of Fig. As can be seen from the above, the ignition device according to the present invention does not require any post-treatment such as sanding because no blackening phenomenon is found on the surface of the frame metal, and in the second low-vacuum heating section (STEP 5) As shown in FIG. 9, which shows the results of the pressure resistance test against the force exerted by the hydraulic equipment after curing, it reached 2,666.48 kg / cm ² (37,9262 psi) The results of this study are as follows.

The red graph in FIG. 9 maintains the stable binding state as shown in FIG. 7 by applying the hydraulic pressure in the state where the pin of the glass bead is fixed to the frame by the hydraulic device, and when it exceeds the internal pressure, The pin and glass beads are separated from each other, and the state where the pressure is zero can be observed after the hydraulic pressure is applied to the ignition device to record 2,666.48 kg / cm ² . have.

These test results are a pressure resistance performance test that can withstand the pressure that the pin receives when the explosion of the explosive device and the explosive device is actually caused by the heating line of the ignition device. The above mentioned 2,666.48 kg / cm ² (37,9262 psi) It is confirmed that it is an excellent level that can satisfy the withstand pressure performance, and that a reliable operation is possible.

Example 2:

After introducing the ignition device into the high temperature furnace, the vacuum pump is operated to set the vacuum degree of the high temperature furnace to 1.5 × 10 ^-5 Torr.

In this state, an electric high-vacuum heating section (STEP 1) is carried out in which the temperature of the frame surface of the ignition device is increased from 430 ° C. to room temperature,

The vacuum pump is operated so that the vacuum degree is maintained at 1.5 x 10 < ^-8 > Torr while the surface temperature of the ignition device frame is heated to 450 DEG C, and a second stable section STEP2 is carried out for 20 minutes.

 A first low-vacuum heating section (STEP3) for lowering the vacuum degree of the high-temperature furnace to 350 Torr and heating the furnace to reach a temperature of 700 DEG C for 9 minutes,

A second stabilization period (STEP4) in which the degree of vacuum is set to 350 Torr and the temperature of 700 DEG C is maintained for 25 minutes,

A second low-vacuum heating section (STEP 5) in which the vacuum degree is set to 350 Torr and the temperature of 700 DEG C is heated to 950 DEG C over 35 minutes,

A third stable section (STEP6) in which the vacuum is maintained at 350 Torr and the temperature is maintained at 950 DEG C for 18 minutes,

A third low vacuum heating section STEP7 for lowering the temperature of 950 deg. C to 600 deg. C in a vacuum state at 350 Torr,

A fourth stable section STEP8 in which the vacuum degree is set to 350 Torr and the temperature is kept at 600 DEG C for 4 minutes,

A first high vacuum heating period (STEP 9) in which the vacuum degree is lowered to 1.5 × 10 ^-5 Torr and then the temperature is lowered from 600 ° C. to 350 ° C. for 1 minute,

A fifth stable section (STEP 10) in which the temperature is maintained at 350 캜 for 6 minutes while the vacuum degree is maintained at 1.5 × 10 ^-5 Torr,

To 1.5 × 10 ^-5 Torr to 1 while maintaining the state bun reviews lowering the temperature at 350 ℃ to 65 ℃ during a second heating zone in a high vacuum degree of vacuum (STEP11) and,

And a sixth stable section (STEP 12) in which the temperature of 65 ° C was maintained for 12 minutes while maintaining the vacuum degree at 1.5 × 10 ^-5 Torr.

The appearance of the ignition device thus obtained was the same as in Fig. 6,

As can be seen from the above, the ignition device according to the present invention does not require any post-treatment such as sanding because no blackening phenomenon is found on the surface of the frame metal, and in the second low-vacuum heating section (STEP 5) As in Example 1, after the curing, the pressure resistance test withstanding the force exerted by the hydraulic equipment resulted in 2,618.51 kg / m ³ (37244.10 psi), which was obtained by homogenizing without any defects occurring in the case of sandblasting with glass beads The results are as shown in Fig.

As shown in FIG. 10, as a result of the internal pressure test of the ignition device manufactured by repeating the first and second embodiments 5 times, the minimum value of 35,866 psi and the maximum value of 38,890 psi were observed, As shown in Fig.

Comparative Example:

In the comparative example, the electric high vacuum heating period STEP1 and the first stable period STEP2, the first low vacuum heating period STEP3, the second stable period STEP4, the second low vacuum heating period STEP5, , The third stable section STEP6, the third low vacuum heating section STEP7, the fourth stable section STEP8, the first high vacuum heating section STEP9, the fifth stable section STEP10, (STEP3), the second stable section STEP4, the second low vacuum heating section STEP5, the second low vacuum heating section STEP3, and the sixth stable section STEP13 are the same as the conditions of the heating section STEP11 and the sixth stabilization section STEP12, The vacuum degree of the third stable period STEP6, the third low vacuum heating period STEP7, and the fourth stable period STEP8 was set to 5 x ^10-3 Torr,

Since the appearance of the ignition device obtained by varying the degree of vacuum is not different from that of FIG. 5, the sanding process for healing the blackening phenomenon due to the inactive gas is unnecessary in this case, but the second low- In the stable zone 3 (STEP 6), the shape of the glass beads in the molten state is deformed, causing structural defects,

As a result, the comparative example was only 22,500 psi when the internal pressure test of the pin was performed in the same manner as the first and second embodiments, and was less than the reference internal pressure of 30,000 psi.

While the present invention has been described in connection with what is presently considered to be preferred embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

1120: Ignition device 1120m; Rubber feet
1121d: header 1121f: heating line
1121g: pin 1121h: high frequency attenuator
1121i: glass bead 112l: rubber moisture-proof plate
1122:

Claims (11)

A pin to which an external connector is connected at one end, and a gunpowder accommodating chamber in which a heating wire and a gunpowder are held at the other end of the pin, and the pin is assembled to be coupled to the frame together with the glass bead, So that the inserted glass bead is melted for electrical insulation and sealing between the pin and the frame,
And a vacuum pump for discharging the gas of the high-temperature furnace to the outside. In the heating process in the high-temperature furnace, the electric high-vacuum heating section, the low-vacuum heating section and the late high- The vacuum degree in the heating section is maintained in the range of 1 x 10 ^-5 Torr to 3 x 10 ^-5 Torr and the vacuum degree in the low vacuum heating section is maintained in the range of 150 Torr to 675 Torr,
The high vacuum heating section is heated at a temperature in the range of from room temperature to 500 ° C, the low vacuum heating section is heated to a temperature of 1020 ° C at the high vacuum heating section, and the high vacuum heating section is heated at a temperature of the low vacuum heating section And then lowering the temperature of the glass bead to a temperature of 50 ° C. delete The method according to claim 1,
Wherein the electric vacuum heating section, the low vacuum heating section, and the late high vacuum heating section are provided with a stabilizing section for maintaining the immediately preceding temperature for a preset time period. The method according to claim 1,
The nonvolatile gas generated from the metal surface of the ignition device heated in the electric high vacuum heating period and the latter high vacuum heating period during the heating process in the high temperature furnace is discharged by the vacuum pump installed in the high temperature furnace, Wherein the bead is melted at a high temperature so that the gas in the glass bead inner layer is discharged by the vacuum pump at a high temperature. The method according to claim 1,
In the electric high vacuum heating section, the vacuum pump is operated so that the vacuum degree of the high temperature furnace is maintained in the range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr, and the temperature is gradually increased from 400 ° C. to 500 ° C. (STEP 1) in which the heating is performed for 25 minutes to 35 minutes while the temperature is raised, and the degree of vacuum of the high temperature furnace is maintained in the range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr for 15 minutes to 25 minutes. And an electrical first stable zone (STEP2) heated to maintain the surface temperature at a temperature in the range of 400 deg. C to 500 deg. C. The method according to claim 1,
The low vacuum heating section is provided with a first low vacuum state in which the temperature of the previous 400 ° C to 500 ° C is raised from 600 ° C to 700 ° C for 5 minutes to 15 minutes while the vacuum degree of the high temperature furnace is maintained in the range of 150 Torr to 675 Torr, A heating section STEP3,
A second low-vacuum heating section (STEP 5) in which the vacuum degree is maintained in the range of 150 Torr to 675 Torr and is started at 600 ° C. to 700 ° C. and is heated to a temperature of 920 ° C. to 1020 ° C. for 25 minutes to 35 minutes,
And a third low-vacuum heating section (STEP7) for lowering the temperature of 920 DEG C to 1020 DEG C to a temperature of 550 DEG C to 650 DEG C for 4 minutes to 8 minutes while maintaining the vacuum degree in the range of 150 Torr to 675 Torr (EN) METHOD FOR WELDING GLASS - BEAD IN IGNITION APPARATUS FOR SETTING - DEPARTMENT. The method according to claim 1,
Wherein the heating temperature of the low vacuum heating zone is higher than the heating temperature of the electric high vacuum heating zone and is raised to a temperature higher than the glass bead melting temperature. The method according to claim 6,
In order to stabilize the metal structure, the temperature of the first low vacuum heating section is maintained for a period of from 25 minutes to 20 minutes while the temperature of the first low vacuum heating section is maintained in the second stable section STEP4 between the first low vacuum heating section STEP3 and the second low vacuum heating section STEP5. Heating for 35 minutes and heating for 15 minutes to 25 minutes while maintaining the temperature of the second low vacuum heating section in the third stable section STEP6 between the second low vacuum heating section STEP5 and the third low vacuum heating section STEP7 , And a fourth stable section (STEP8) in which the temperature is maintained for 4 minutes to 6 minutes while the temperature of the third low vacuum heating section is maintained after the third low vacuum heating section (STEP7) Glass bead deposition method. The method according to claim 1,
And the heating temperature of the latter high vacuum heating zone is lower than the heating temperature of the low vacuum heating zone. The method according to claim 1,
The second high vacuum heating period is performed in a range of 550 ° C. to 650 ° C. for 30 seconds to 1 minute and 30 seconds while lowering the vacuum degree of the high temperature furnace to a range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr by the vacuum pump (STEP 9) for lowering the heating temperature of the first high vacuum heating section to a temperature in the range of 350 ° C. to 450 ° C.,
The heating temperature in the range of 350 ° C to 450 ° C is maintained at 50 ° C to 450 ° C for 30 seconds to 1 minute and 30 seconds while the vacuum degree of the high temperature furnace is maintained in the range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr by the vacuum pump, And a second high vacuum heating period (STEP11) in which the temperature of the glass bead is lowered to 70 DEG C. 11. The method of claim 10,
The vacuum degree of the high temperature furnace is maintained between 1 × 10 ^-5 Torr and 3 × 10 ^-5 Torr by the vacuum pump between the later first high vacuum heating period STEP 9 and the second high vacuum heating period STEP 11 (STEP 10) in which the temperature in the range of 350 ° C to 450 ° C, which is the temperature of the first high vacuum heating section (STEP 9), is maintained for 3 minutes to 6 minutes,
After the second high-vacuum heating period STEP 11, the vacuum degree of the high-temperature furnace is maintained at 50 ° C. to 70 ° C. for 7 minutes to 13 minutes while the vacuum pump is maintained in the range of 1 × 10 ^-5 Torr to 3 × 10 ^-5 Torr And a sixth stable period STEP12 is performed in the sixth stable period STEP12.

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