CN111793737A - Annealing device and annealing process for large-diameter tungsten bar - Google Patents
Annealing device and annealing process for large-diameter tungsten bar Download PDFInfo
- Publication number
- CN111793737A CN111793737A CN202010210467.4A CN202010210467A CN111793737A CN 111793737 A CN111793737 A CN 111793737A CN 202010210467 A CN202010210467 A CN 202010210467A CN 111793737 A CN111793737 A CN 111793737A
- Authority
- CN
- China
- Prior art keywords
- diameter tungsten
- annealing
- hydrogen
- protection box
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to the technical field of metal heat treatment, and discloses a large-diameter tungsten bar annealing device and an annealing process. The annealing device and the annealing process for the large-diameter tungsten bar can effectively eliminate the internal stress of the large-diameter tungsten bar, avoid the phenomena of splitting, edge breakage, surface microcrack and the like which can occur in subsequent processing, improve the processing performance of the tungsten bar, prolong the service life of consumables such as a machining cutter and the like, improve the service performance of the tungsten bar, and effectively improve the high-temperature service life of the tungsten bar.
Description
Technical Field
The invention relates to the technical field of metal heat treatment, in particular to a large-diameter tungsten bar annealing device and an annealing process.
Background
Tungsten alloy is widely applied to various fields such as national defense and military industry, electronics, electric light sources, chemical engineering, medical treatment, machinery and the like due to the characteristics of extremely high melting point, low vapor pressure, low expansibility and dimensional stability at high temperature, excellent electron emission performance, high-temperature mechanical property and the like. After the large-diameter tungsten bar sintered at high temperature is forged and beaten by multiple passes and large compression ratio, the bar with qualified density can be used as a bar with deformation of more than 60 percent, and the bar can be used as a raw material for further machining.
Under the action of alternating stress, the internal stress of the tungsten rod is rapidly accumulated, and when the stress of a partial area is excessively concentrated, the tungsten rod can be split and unstable in size during pressure processing; problems such as edge chipping, surface (micro) cracking, too fast consumption of machining tools and the like of parts can occur during machining; the tungsten rod is applied to the related field, and the tungsten rod parts have insufficient service life at high temperature and even cannot be used. The above problems are mainly caused by the stress existing inside the large-diameter tungsten rod, which causes the reduction of the processing performance and the service performance of the large-diameter tungsten rod.
Therefore, how to effectively eliminate the internal stress of the large-diameter tungsten rod is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide an annealing device and an annealing process for a large-diameter tungsten bar, which can effectively eliminate the internal stress of the large-diameter tungsten bar, improve the processing performance and the service performance of the large-diameter tungsten bar and improve the high-temperature service life of the large-diameter tungsten bar.
According to an aspect of the present invention, there is provided a large-diameter tungsten rod annealing apparatus, including: first silo, feed arrangement, hydrogen protection box, induction coil, IGBT high frequency induction power, discharging device, second silo, motor, automatically controlled cabinet and cooling system, wherein:
the first material groove is arranged in front of the feeding device and used for placing the large-diameter tungsten bar to be annealed, and the second material groove is arranged behind the discharging device and used for placing the large-diameter tungsten bar subjected to annealing;
the hydrogen protection box is arranged between the feeding device and the discharging device, the induction coil is fixed in the hydrogen protection box and is connected to the IGBT high-frequency induction power supply, the front end of the hydrogen protection box is provided with a feeding hole, the rear end of the hydrogen protection box is provided with a discharging hole, the front side of the hydrogen protection box is provided with an observation hole, and a hydrogen pipe communicated with a hydrogen supply source is connected below the hydrogen protection box;
the feeding device and the discharging device respectively comprise a driving wheel, a driven wheel, an air cylinder and a supporting plate, the output end of the motor is fixedly provided with a chain wheel, the driving wheel of the feeding device is connected with the chain wheel through a chain, the driving wheel of the feeding device and the driving wheel of the discharging device are mutually connected through the chain, the driven wheel is arranged above the driving wheel and mutually meshed, the supporting plate is connected with the driven wheel, and the air cylinder is fixed on the supporting plate;
a frequency converter for controlling the rotating speed of the motor is arranged in the electric control cabinet, and an IGBT high-frequency induction power supply power adjusting knob, an equipment power switch, a motor switch and an emergency stop button are arranged on a panel of the electric control cabinet;
the cooling system comprises a cooling circulating water supply source, a water separator connected to the cooling circulating water supply source and a cooling pipe connected to the water separator, wherein the cooling pipe comprises a first cooling pipe, a second cooling pipe and a third cooling pipe, the first cooling pipe is connected to a discharge hole in the rear end of the hydrogen protection box, the second cooling pipe is welded on the outer surface of the box body of the hydrogen protection box, and the third cooling pipe is welded on the surface of a copper plate connecting the induction coil to the IGBT high-frequency induction power supply.
Preferably, in the large-diameter tungsten rod annealing device, an inlet guide is arranged in a feed hole at the front end of the hydrogen protection box, and an outlet guide is arranged in a discharge hole at the rear end of the hydrogen protection box.
Preferably, in the large-diameter tungsten rod annealing device, the inlet guide and the outlet guide are made of tungsten alloy.
Preferably, in the large-diameter tungsten rod annealing device, the inlet angles of the inlet guide and the outlet guide are both 120 ± 10 °.
Preferably, in the large-diameter tungsten rod annealing device, the induction coil has an inner diameter of 30 to 40mm and a length of 80 to 100 mm.
According to another aspect of the present invention, there is provided a large-diameter tungsten rod annealing process performed by using the large-diameter tungsten rod annealing apparatus, including:
step 1: introducing cooling circulating water into the large-diameter tungsten bar annealing device by a cooling system, and introducing hydrogen into a hydrogen protection box by a hydrogen pipe, wherein the hydrogen introducing time is controlled to be 5 min;
step 2: placing a large-diameter tungsten bar to be annealed in a first trough, starting a power supply of equipment and starting a motor, wherein the motor drives a driving wheel of a feeding device through a chain wheel, after the front end of the large-diameter tungsten bar to be annealed is placed on the driving wheel of the feeding device, an electric control cabinet controls the action of an air cylinder of the feeding device and enables a driven wheel of the feeding device to be pressed down onto the large-diameter tungsten bar to be annealed through a supporting plate of the feeding device, the large-diameter tungsten bar to be annealed is guided into a hydrogen protection box under the action of the driving wheel and the driven wheel of the feeding device, and an induction coil protected by hydrogen in the hydrogen protection box anneals the large-diameter tungsten bar;
and step 3: the hydrogen protection box is released by feed arrangement to the major diameter tungsten rod after the annealing is accomplished, via the cooling of first cooling tube, and the major diameter tungsten rod after the annealing is accomplished the front end of major diameter tungsten rod put on discharging device's action wheel after, by discharging device's action wheel and follow driving wheel with the major diameter tungsten rod after the annealing is accomplished lead out to the second silo on.
Preferably, in the large-diameter tungsten rod annealing process, in step 1, the pressure range of the cooling circulating water is controlled to be 0.15-0.25 MPa.
Preferably, in the annealing process of the large-diameter tungsten rod, in step 1, the flow rate of hydrogen is controlled to be 15-20L/min.
Preferably, in the annealing process of the large-diameter tungsten rod, in step 2, the power adjusting knob of the IGBT high-frequency induction power supply is adjusted to adjust the power of the IGBT high-frequency induction power supply, and the annealing temperature of the large-diameter tungsten rod passing through the induction coil is controlled to be 1400-1600 ℃.
Preferably, in the annealing process of the large-diameter tungsten rod, in step 2, the frequency of the frequency converter is adjusted so as to control the rotating speed of the motor, and the annealing speed of the large-diameter tungsten rod is controlled to be 0.2-0.5 m/min.
The annealing device and the annealing process for the large-diameter tungsten bar can effectively eliminate the internal stress of the large-diameter tungsten bar, avoid the phenomena of splitting, edge breakage, surface (micro) cracks and the like which possibly occur in subsequent processing, improve the processing performance of the tungsten bar, prolong the service life of consumables such as a machining cutter and the like, improve the service performance of the tungsten bar and effectively improve the high-temperature service life of the tungsten bar.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic structural diagram of a large-diameter tungsten bar annealing device of the invention.
FIG. 2 is a schematic structural diagram of a feeding device in the annealing device for large-diameter tungsten rods according to the present invention.
FIG. 3 is a schematic structural diagram of an induction coil in the annealing apparatus for large-diameter tungsten rods according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2 and 3, the annealing apparatus for a large-diameter tungsten rod according to the present invention includes: the device comprises a first trough 1, a feeding device 2, a hydrogen protection box 4, an induction coil 5, an Insulated Gate Bipolar Transistor (IGBT) high-frequency induction power supply 7, a discharging device 9, a second trough 1', a motor 10 and an electric control cabinet 12.
The first trough 1 is arranged in front of the feeding device 2, the second trough 1 'is arranged behind the discharging device 9, the first trough 1 is used for placing large-diameter tungsten bars to be annealed, and the second trough 1' is used for placing large-diameter tungsten bars to be annealed.
The hydrogen protection box 4 is arranged between the feeding device 2 and the discharging device 9, and the induction coil 5 is fixed in the hydrogen protection box 4 and connected to the IGBT high-frequency induction power supply 7.
The feeding device 2 and the discharging device 9 both comprise a driving wheel, a driven wheel, an air cylinder and a supporting plate, fig. 2 shows the driving wheel 21, the driven wheel 22, the air cylinder 23 and the supporting plate 24 which are included in the feeding device 2 as an example, a chain wheel (not shown) is fixed at the output end of the motor 10, the driving wheel 21 is fixed on the table top of the annealing device and is connected to the chain wheel through a chain, the driven wheel 22 is arranged above the driving wheel 21 and is meshed with the driving wheel 21, the supporting plate 24 is connected to the driven wheel 22, and the air cylinder 23. Furthermore, the driving wheel 21 of the feeding device 2 is connected to the driving wheel of the discharging device 9 via a chain. The structure of the discharging device 9 is the same as that of the feeding device 2, and the illustration and description are not repeated here.
A frequency converter (not shown) is arranged in the electric control cabinet 12, and the rotating speed of the motor 10 can be controlled by adjusting the frequency of the frequency converter, so that the operating speeds of the feeding device 2 and the discharging device 9, namely the annealing speed of the large-diameter tungsten bar, can be adjusted. The panel of the electric control cabinet 12 is provided with an IGBT high-frequency induction power supply power adjusting knob, an equipment power switch, a motor switch and an emergency stop button. The power of the IGBT high-frequency induction power supply 7 can be adjusted by adjusting the power adjusting knob of the IGBT high-frequency induction power supply, so that the annealing temperature of the large-diameter tungsten bar can be adjusted.
Preferably, in the large-diameter tungsten rod annealing device, a feed hole is formed in the front end of the hydrogen protection box 4, an inlet guide 3 is arranged in the feed hole, a discharge hole is formed in the rear end of the hydrogen protection box 4, an outlet guide (not shown) is arranged in the discharge hole, an observation hole 6 is formed in the front surface of the hydrogen protection box 4, and a hydrogen pipe 11 communicated with a hydrogen supply source (not shown) is connected below the hydrogen protection box 4.
Preferably, the inlet guide 3 and the outlet guide of the hydrogen protection box 4 are both made of tungsten alloy, and the inlet angles of the inlet guide 3 and the outlet guide are both 120 ± 10 °.
Preferably, in the large-diameter tungsten rod annealing apparatus, the induction coil 5 has an inner diameter of 30 to 40mm and a length of 80 to 100 mm.
Preferably, in the large-diameter tungsten rod annealing device, a cooling system for cooling the hydrogen protection box 4, the induction coil 5 and the annealed large-diameter tungsten rod is provided, the cooling system is composed of a cooling circulating water supply source (not shown), a water separator 13 connected to the cooling circulating water supply source, and a cooling pipe connected to the water separator 13, wherein the cooling pipe includes a first cooling pipe 8, a second cooling pipe and a third cooling pipe, the first cooling pipe 8 is connected to a discharge hole at the rear end of the hydrogen protection box 4, the inner diameter of the first cooling pipe is the same as the diameter of the discharge hole, cooling circulating water is introduced into the first cooling pipe 8, and the annealed large-diameter tungsten rod is cooled by the cooling circulating water in the first cooling pipe 8 after being led out from the discharge hole, so as to avoid the surface oxidation; a second cooling pipe (not shown) is welded on the outer surface of the hydrogen protection box 4, and cooling circulating water is introduced into the second cooling pipe to cool the hydrogen protection box 4; a third cooling pipe (not shown) through which cooling circulation water is passed is welded to the surface of a copper plate (not shown) connecting the induction coil 5 to the IGBT high-frequency induction power supply 7, and the induction coil 5 can be cooled.
In another aspect, the large-diameter tungsten rod annealing process implemented by using the large-diameter tungsten rod annealing device comprises the following steps:
step 1: introducing cooling circulating water into the large-diameter tungsten bar annealing device by a cooling system, and introducing hydrogen into the hydrogen protection box 4 through a hydrogen pipe 11, wherein the hydrogen introducing time is controlled to be 5 min;
step 2: placing a large-diameter tungsten bar to be annealed in a first trough 1 in front of a feeding device 2, starting a device power supply through a device power switch and starting a motor 10 through a motor switch and an emergency stop button, wherein the motor 10 drives a driving wheel 21 of the feeding device 2 through a chain wheel, after the front end of the large-diameter tungsten bar to be annealed is placed on the driving wheel 21 of the feeding device 2, an electric control cabinet 12 controls an air cylinder 23 to act and a driven wheel 22 is pressed down onto the large-diameter tungsten bar to be annealed through a supporting plate 24, so that the large-diameter tungsten bar to be annealed is guided into a hydrogen protection box 4 under the combined action of the driving wheel 21 and the driven wheel 22, and the large-diameter tungsten bar is annealed by an induction coil 5 protected by hydrogen in the hydrogen protection box 4;
and step 3: the hydrogen protection box is released by feed arrangement 2 to the major diameter tungsten rod after the completion of annealing, via the cooling of first cooling tube 8, and the front end of the major diameter tungsten rod after the completion of annealing is put on discharging device 9's action wheel after, by discharging device 9's action wheel and follow driving wheel with the major diameter tungsten rod after the completion of annealing derive to discharging device 9 after on second silo 1 '.
Preferably, in the large-diameter tungsten rod annealing process, in step 1, the pressure range of the cooling circulating water is controlled to be 0.15-0.25 MPa.
Preferably, in the annealing process of the large-diameter tungsten rod, in step 1, the flow rate of hydrogen is controlled to be 15-20L/min.
Preferably, in the large-diameter tungsten rod annealing process, in step 2, the IGBT high-frequency induction power supply power adjusting knob is adjusted to adjust the power of the IGBT high-frequency induction power supply 7, thereby controlling the annealing temperature of the large-diameter tungsten rod passing through the induction coil 5 to be 1400-1600 ℃.
Further preferably, in the annealing process of the large-diameter tungsten rod, in step 2, according to the diameter of the large-diameter tungsten rod to be annealed, the power adjusting knob of the IGBT high-frequency induction power supply is adjusted so as to adjust the power of the IGBT high-frequency induction power supply, thereby controlling the annealing temperature of the large-diameter tungsten rod passing through the induction coil 5 to be between 1400 ℃ and 1600 ℃.
Preferably, in the large-diameter tungsten bar annealing process, in step 2, the annealing temperature is measured through the observation hole 6, and if the annealing temperature is lower than 1400 ℃, the power of the IGBT high-frequency induction power supply 7 is increased through the IGBT high-frequency induction power supply power adjustment knob, thereby increasing the annealing temperature of the large-diameter tungsten bar passing through the induction coil 5; if the annealing temperature is higher than 1600 ℃, the power of the IGBT high-frequency induction power supply 7 is turned down by an IGBT high-frequency induction power supply power adjusting knob, thereby reducing the annealing temperature of the large-diameter tungsten bar passing through the induction coil 5.
Preferably, in the large-diameter tungsten rod annealing process, in step 2, the frequency of the frequency converter is adjusted so as to control the rotating speed of the motor 10, thereby adjusting the operating speeds of the feeding device 2 and the discharging device 9, so as to control the annealing speed of the large-diameter tungsten rod to be 0.2-0.5 m/min.
The annealing effect of large diameter tungsten rods is generally evaluated in terms of the hardness of the material after annealing. By utilizing the annealing device and the annealing process for the large-diameter tungsten bar, the microstructure of the annealed large-diameter tungsten bar is not changed, and the hardness is reduced by about 10%, so that the internal stress of the large-diameter tungsten bar can be effectively eliminated, the phenomena of splitting, edge breakage, surface (micro) cracks and the like which can possibly occur in subsequent processing can be avoided, the processing performance of the tungsten bar can be improved, the service life of consumables such as a machining cutter and the like can be prolonged, the service performance of the tungsten bar can be improved, and the high-temperature service life of the tungsten bar can be effectively improved.
The annealing apparatus and the annealing process for large-diameter tungsten rods according to the present invention will be described in detail with reference to the following embodiments.
Example 1
In example 1, the annealing apparatus and the annealing process for large-diameter tungsten rods according to the present invention were used to anneal tungsten rods having a diameter of
The tungsten bar containing potassium is annealed.
In the large-diameter tungsten rod annealing apparatus according to embodiment 1, the inlet angles of the inlet guide and the outlet guide are both 120 °, and the inner diameter and the length of the induction coil are 35mm and 90mm, respectively.
The large-diameter tungsten rod annealing process of example 1 comprises: introducing cooling circulating water into the large-diameter tungsten bar annealing device by a cooling system, controlling the pressure of the cooling circulating water to be 0.2Mpa, and then introducing hydrogen into a hydrogen protection box through a hydrogen pipe, wherein the flow rate of the hydrogen is controlled to be 16L/min, and the ventilation time of the hydrogen is controlled to be 5 min; starting a motor, driving a feeding device and a discharging device, and adjusting the frequency of a frequency converter so as to control the rotating speed of the motor, so that the large-diameter tungsten bar to be annealed is guided into and out of a hydrogen protection box at an annealing speed of 0.35m/min, and the large-diameter tungsten bar is annealed by an induction coil protected by hydrogen in the hydrogen protection box; and adjusting the power adjusting knob of the IGBT high-frequency induction power supply in the annealing process so as to adjust the power of the IGBT high-frequency induction power supply, thereby controlling the annealing temperature to be 1500 ℃.
The diameter after annealing by the annealing apparatus and the annealing process of example 1 was
The microstructure of the tungsten bar containing potassium is not changed, the hardness is reduced by 8 percent, the tungsten bar has uniform structure, the processing performance is obviously improved, and the tungsten bar is completely suitable for subsequent processing.
Example 2
In example 2, the annealing apparatus and the annealing process for large-diameter tungsten rods according to the present invention were used to anneal tungsten rods having a diameter of
The rare earth doped tungsten alloy bar is annealed.
In the large-diameter tungsten rod annealing apparatus according to example 2, the inlet angle of each of the inlet guide and the outlet guide is 125 °, and the inner diameter and the length of the induction coil are 40mm and 90mm, respectively.
The large-diameter tungsten rod annealing process of example 2 includes: introducing cooling circulating water into the large-diameter tungsten bar annealing device by a cooling system, controlling the pressure of the cooling circulating water to be 0.2Mpa, and then introducing hydrogen into a hydrogen protection box through a hydrogen pipe, wherein the flow rate of the hydrogen is controlled to be 20L/min, and the ventilation time of the hydrogen is controlled to be 5 min; starting a motor, driving a feeding device and a discharging device, and adjusting the frequency of a frequency converter so as to control the rotating speed of the motor, so that the large-diameter tungsten bar to be annealed is guided into and out of a hydrogen protection box at the annealing speed of 0.3m/min, and the large-diameter tungsten bar is annealed by an induction coil protected by hydrogen in the hydrogen protection box; and adjusting the power adjusting knob of the IGBT high-frequency induction power supply in the annealing process so as to adjust the power of the IGBT high-frequency induction power supply, thereby controlling the annealing temperature to be 1500 ℃.
The diameter after annealing by the annealing apparatus and the annealing process of example 2 was
The microstructure of the rare earth doped tungsten alloy bar does not change, the hardness is reduced by 12 percent, the tungsten bar has uniform structure, the processing performance is obviously improved, and the rare earth doped tungsten alloy bar is completely suitable for subsequent processing.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be further noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or alterations do not depart from the spirit of the invention.
Claims (10)
1. A large diameter tungsten rod annealing apparatus comprising: first silo, feed arrangement, hydrogen protection box, induction coil, IGBT high frequency induction power, discharging device, second silo, motor, automatically controlled cabinet and cooling system, its characterized in that:
the first material groove is arranged in front of the feeding device and used for placing the large-diameter tungsten bar to be annealed, and the second material groove is arranged behind the discharging device and used for placing the large-diameter tungsten bar subjected to annealing;
the hydrogen protection box is arranged between the feeding device and the discharging device, the induction coil is fixed in the hydrogen protection box and is connected to the IGBT high-frequency induction power supply, the front end of the hydrogen protection box is provided with a feeding hole, the rear end of the hydrogen protection box is provided with a discharging hole, the front side of the hydrogen protection box is provided with an observation hole, and a hydrogen pipe communicated with a hydrogen supply source is connected below the hydrogen protection box;
the feeding device and the discharging device respectively comprise a driving wheel, a driven wheel, an air cylinder and a supporting plate, the output end of the motor is fixedly provided with a chain wheel, the driving wheel of the feeding device is connected with the chain wheel through a chain, the driving wheel of the feeding device and the driving wheel of the discharging device are mutually connected through the chain, the driven wheel is arranged above the driving wheel and mutually meshed, the supporting plate is connected with the driven wheel, and the air cylinder is fixed on the supporting plate;
a frequency converter for controlling the rotating speed of the motor is arranged in the electric control cabinet, and an IGBT high-frequency induction power supply power adjusting knob, an equipment power switch, a motor switch and an emergency stop button are arranged on a panel of the electric control cabinet;
the cooling system comprises a cooling circulating water supply source, a water separator connected to the cooling circulating water supply source and a cooling pipe connected to the water separator, wherein the cooling pipe comprises a first cooling pipe, a second cooling pipe and a third cooling pipe, the first cooling pipe is connected to a discharge hole in the rear end of the hydrogen protection box, the second cooling pipe is welded on the outer surface of the box body of the hydrogen protection box, and the third cooling pipe is welded on the surface of a copper plate connecting the induction coil to the IGBT high-frequency induction power supply.
2. The large-diameter tungsten rod annealing device according to claim 1, wherein the inlet guide and guard are provided in the feed hole at the front end of the hydrogen shield box, and the outlet guide and guard are provided in the discharge hole at the rear end of the hydrogen shield box.
3. The large diameter tungsten rod annealing device according to claim 2, wherein the inlet guide and the outlet guide are made of tungsten alloy.
4. The large-diameter tungsten rod annealing apparatus according to claim 2 or 3 wherein the inlet angle of the inlet guide and the outlet guide are both 120 ± 10 °.
5. The annealing apparatus for large-diameter tungsten rods according to claim 1, wherein the induction coil has an inner diameter of 30 to 40mm and a length of 80 to 100 mm.
6. A large-diameter tungsten rod annealing process performed by using the large-diameter tungsten rod annealing apparatus according to any one of claims 1 to 5, wherein the large-diameter tungsten rod annealing process comprises:
step 1: introducing cooling circulating water into the large-diameter tungsten bar annealing device by a cooling system, and introducing hydrogen into a hydrogen protection box by a hydrogen pipe, wherein the hydrogen introducing time is controlled to be 5 min;
step 2: placing a large-diameter tungsten bar to be annealed in a first trough, starting a power supply of equipment and starting a motor, wherein the motor drives a driving wheel of a feeding device through a chain wheel, after the front end of the large-diameter tungsten bar to be annealed is placed on the driving wheel of the feeding device, an electric control cabinet controls the action of an air cylinder of the feeding device and enables a driven wheel of the feeding device to be pressed down onto the large-diameter tungsten bar to be annealed through a supporting plate of the feeding device, the large-diameter tungsten bar to be annealed is guided into a hydrogen protection box under the action of the driving wheel and the driven wheel of the feeding device, and an induction coil protected by hydrogen in the hydrogen protection box anneals the large-diameter tungsten bar;
and step 3: the hydrogen protection box is released by feed arrangement to the major diameter tungsten rod after the annealing is accomplished, via the cooling of first cooling tube, and the major diameter tungsten rod after the annealing is accomplished the front end of major diameter tungsten rod put on discharging device's action wheel after, by discharging device's action wheel and follow driving wheel with the major diameter tungsten rod after the annealing is accomplished lead out to the second silo on.
7. The large-diameter tungsten rod annealing process according to claim 6, wherein in the step 1, the pressure of the cooling circulating water is controlled to be 0.15 to 0.25 MPa.
8. The large-diameter tungsten rod annealing process according to claim 6, wherein in the step 1, the flow rate of hydrogen is controlled to be 15 to 20L/min.
9. The large-diameter tungsten rod annealing process according to claim 6, wherein in the step 2, the power of the IGBT high-frequency induction power supply is adjusted by adjusting a power adjusting knob of the IGBT high-frequency induction power supply, and the annealing temperature of the large-diameter tungsten rod passing through the induction coil is controlled to be 1400-1600 ℃.
10. The large-diameter tungsten rod annealing process according to claim 6, wherein in the step 2, the frequency of the frequency converter is adjusted so as to control the rotation speed of the motor, and the annealing speed of the large-diameter tungsten rod is controlled to be 0.2-0.5 m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010210467.4A CN111793737A (en) | 2020-03-24 | 2020-03-24 | Annealing device and annealing process for large-diameter tungsten bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010210467.4A CN111793737A (en) | 2020-03-24 | 2020-03-24 | Annealing device and annealing process for large-diameter tungsten bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111793737A true CN111793737A (en) | 2020-10-20 |
Family
ID=72806422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010210467.4A Pending CN111793737A (en) | 2020-03-24 | 2020-03-24 | Annealing device and annealing process for large-diameter tungsten bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111793737A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114015850A (en) * | 2021-11-03 | 2022-02-08 | 赣州虹飞钨钼材料有限公司 | Double-tungsten-rod simultaneous annealing equipment and annealing process thereof |
| CN117286310A (en) * | 2023-10-07 | 2023-12-26 | 昆山市力格自动化设备有限公司 | Tungsten rod high-temperature annealing box |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2910964Y (en) * | 2006-06-07 | 2007-06-13 | 西部钛业有限责任公司 | Continuous and quick-action annealing apparatus for titanium tube |
| CN201342456Y (en) * | 2008-12-14 | 2009-11-11 | 天水锻压机床有限公司 | Synchronous following lifting mechanism of retaining roll table |
| CN101649437A (en) * | 2008-08-11 | 2010-02-17 | 洛阳高科钼钨材料有限公司 | Medium frequency induction annealing process of molybdenum wire rods |
| CN201648501U (en) * | 2010-04-13 | 2010-11-24 | 北京建莱机电技术有限公司 | High-speed continuous induction annealing device for copper pipes |
| CN102409150A (en) * | 2011-10-16 | 2012-04-11 | 浙江康盛股份有限公司 | Induction heating multi-pipeline steel tube continuous annealing process line |
| CN103740923A (en) * | 2014-01-23 | 2014-04-23 | 浙江五洲新春集团股份有限公司 | High-frequency annealing device of semi-automatic bearing |
| CN104607499A (en) * | 2014-12-18 | 2015-05-13 | 杜伟 | Automatic straightening equipment for steel pipes |
| CN104999008A (en) * | 2015-07-13 | 2015-10-28 | 十堰万恒锻压有限公司 | Bar material heating system |
| CN205008430U (en) * | 2015-10-09 | 2016-02-03 | 西部钛业有限责任公司 | Tubular product thermal treatment straightener |
| CN105506261A (en) * | 2014-09-26 | 2016-04-20 | 洛阳新火种节能技术推广有限公司 | Bright annealing apparatus for inner wall of pipe |
| CN105499317A (en) * | 2016-02-04 | 2016-04-20 | 镇江市黄墟锚链有限公司 | Straightening and conveying device of hoisting chain |
| CN107974651A (en) * | 2017-12-22 | 2018-05-01 | 烟台孚信达双金属股份有限公司 | A kind of online rotary inductive method for annealing of Copper-Aluminum compound pole and equipment |
| CN108315546A (en) * | 2018-05-14 | 2018-07-24 | 应达工业（上海）有限公司 | A kind of 500 ms/min of online copper pipe annealing devices |
| CN109440034A (en) * | 2018-12-19 | 2019-03-08 | 中国科学院金属研究所 | A kind of heat treatment process of the long conducting wire of high-strength high-conductivity copper-chromium-zirconium |
-
2020
- 2020-03-24 CN CN202010210467.4A patent/CN111793737A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2910964Y (en) * | 2006-06-07 | 2007-06-13 | 西部钛业有限责任公司 | Continuous and quick-action annealing apparatus for titanium tube |
| CN101649437A (en) * | 2008-08-11 | 2010-02-17 | 洛阳高科钼钨材料有限公司 | Medium frequency induction annealing process of molybdenum wire rods |
| CN201342456Y (en) * | 2008-12-14 | 2009-11-11 | 天水锻压机床有限公司 | Synchronous following lifting mechanism of retaining roll table |
| CN201648501U (en) * | 2010-04-13 | 2010-11-24 | 北京建莱机电技术有限公司 | High-speed continuous induction annealing device for copper pipes |
| CN102409150A (en) * | 2011-10-16 | 2012-04-11 | 浙江康盛股份有限公司 | Induction heating multi-pipeline steel tube continuous annealing process line |
| CN103740923A (en) * | 2014-01-23 | 2014-04-23 | 浙江五洲新春集团股份有限公司 | High-frequency annealing device of semi-automatic bearing |
| CN105506261A (en) * | 2014-09-26 | 2016-04-20 | 洛阳新火种节能技术推广有限公司 | Bright annealing apparatus for inner wall of pipe |
| CN104607499A (en) * | 2014-12-18 | 2015-05-13 | 杜伟 | Automatic straightening equipment for steel pipes |
| CN104999008A (en) * | 2015-07-13 | 2015-10-28 | 十堰万恒锻压有限公司 | Bar material heating system |
| CN205008430U (en) * | 2015-10-09 | 2016-02-03 | 西部钛业有限责任公司 | Tubular product thermal treatment straightener |
| CN105499317A (en) * | 2016-02-04 | 2016-04-20 | 镇江市黄墟锚链有限公司 | Straightening and conveying device of hoisting chain |
| CN107974651A (en) * | 2017-12-22 | 2018-05-01 | 烟台孚信达双金属股份有限公司 | A kind of online rotary inductive method for annealing of Copper-Aluminum compound pole and equipment |
| CN108315546A (en) * | 2018-05-14 | 2018-07-24 | 应达工业（上海）有限公司 | A kind of 500 ms/min of online copper pipe annealing devices |
| CN109440034A (en) * | 2018-12-19 | 2019-03-08 | 中国科学院金属研究所 | A kind of heat treatment process of the long conducting wire of high-strength high-conductivity copper-chromium-zirconium |
Non-Patent Citations (1)
| Title |
|---|
| 何涛: ""钨丝生产技术浅析"", 《有色金属加工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114015850A (en) * | 2021-11-03 | 2022-02-08 | 赣州虹飞钨钼材料有限公司 | Double-tungsten-rod simultaneous annealing equipment and annealing process thereof |
| CN117286310A (en) * | 2023-10-07 | 2023-12-26 | 昆山市力格自动化设备有限公司 | Tungsten rod high-temperature annealing box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111793737A (en) | Annealing device and annealing process for large-diameter tungsten bar | |
| CN111074185B (en) | Heat treatment method capable of effectively reducing anisotropy of titanium alloy manufactured by laser additive | |
| CN1064276C (en) | Method of manufacturing seamless steel pipes and manufacturing equipment therefor | |
| CN113593766B (en) | Preparation method of NbTi/CuNi superconducting switch wire with high Ni content | |
| CN111575612A (en) | Toughening method of non-ferrous metal material | |
| CN117960814A (en) | Drawing process for cutting bus fine tungsten wire | |
| CN108441613A (en) | A kind of anti-white point control method of age-hardening plastic mould steel | |
| CN114015850A (en) | Double-tungsten-rod simultaneous annealing equipment and annealing process thereof | |
| CN105913900A (en) | Hard copper busbar and preparation method thereof | |
| CN102108477A (en) | Heat treatment method of aluminum material | |
| CN111349760A (en) | Quick-change planer tool heat treatment processing technique | |
| CN106363307A (en) | Novel machining method for NdFeB | |
| CN115584410B (en) | High-purity oxygen-free copper tube and preparation method and application thereof | |
| RU2681040C1 (en) | METHOD FOR MANUFACTURE OF (α+β)-TITANIUM ALLOY WIRE FOR ADDITIVE TECHNOLOGY WITH INDUCTION HEATING | |
| CN113462923A (en) | High-strength high-conductivity copper-magnesium alloy and wire for dropper and preparation method thereof | |
| CN108754371B (en) | Preparation method of refined α -close high-temperature titanium alloy grains | |
| CN108486512B (en) | Tissue orientation method without transverse grain boundary copper wire | |
| CN108465787A (en) | A kind of manufacturing process of asynchronous traction motor rotor chromium-bronze conducting bar | |
| CN206375958U (en) | A kind of aluminium section bar Quick annealing device | |
| CN114381594A (en) | Continuous rapid annealing process for brass-coated pure copper stranded wire high-speed rail through ground wire | |
| CN106521131B (en) | A kind of aluminium section bar rta technique and its device | |
| CN101649437A (en) | Medium frequency induction annealing process of molybdenum wire rods | |
| CN102719651A (en) | Rapid induction heating and air cooling heat treatment process for steel wire | |
| CN103667617A (en) | Heat treatment process for improving impact toughness of 1Cr12Ni3Mo2VN turbine blade | |
| CN103911572B (en) | A kind of production technology of copper alloy with high strength and high conductivity contact net lines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201020 |
|
| RJ01 | Rejection of invention patent application after publication |