CN115717820A - Heating furnace for hot-pressing compounding of metal blanks with ultra-large specifications - Google Patents
Heating furnace for hot-pressing compounding of metal blanks with ultra-large specifications Download PDFInfo
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- CN115717820A CN115717820A CN202211412921.XA CN202211412921A CN115717820A CN 115717820 A CN115717820 A CN 115717820A CN 202211412921 A CN202211412921 A CN 202211412921A CN 115717820 A CN115717820 A CN 115717820A
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Abstract
The invention relates to a heating furnace for hot-pressing compounding of an oversized metal blank, and relates to the technical field of metal processing. Comprises a pressure-bearing base, a furnace shell arranged in sections, a cooling water circulation system and a temperature control device; the furnace shells are arranged at the top end of the pressure-bearing base, and the cooling water circulating system is arranged on one side of the pressure-bearing base and communicated with the pressure-bearing base; the metal blanks are placed above the pressure-bearing base in a stacked manner; a plurality of electric heating wires which are longitudinally distributed are uniformly arranged in the furnace shell, and the electric heating wires are electrically connected with a temperature control device and used for adjusting the heating temperature of the metal blank. The invention can heat metal blanks with different heights by adjusting the number of the furnace shells, and heat the blanks in a stepped heating and heat preservation mode according to different types of metal materials; the pressurizing circular truncated cone is slowly pressurized by a large-scale press, and the metal blanks are pressurized to carry out hot-pressing diffusion compounding, so that the blanks are combined, and the components of the metal material containing the elements easy to segregate are more uniform.
Description
Technical Field
The invention relates to the technical field of metal processing, in particular to a heating furnace for hot-pressing compounding of ultra-large metal blanks.
Background
The fields of ocean, nuclear power, chemical industry and the like put forward urgent demands on super-large-specification processing materials, and due to the poor quality of forge welding, the super-large processing materials can reduce welding seams during manufacturing of large equipment, so that the performance of the equipment is effectively improved, and the service life of the equipment is prolonged. The traditional preparation method of the 'big and small' material needs to firstly prepare an ingot with a specification larger than that of a processed material, but when an alloy containing elements easy to segregate is smelted, the larger the ingot type is, the more serious the component segregation is, and meanwhile, due to the limitation of the smelting tonnage, the obtainment of the oversized ingots of titanium, steel, nickel and the like is also limited. The idea of 'from small to large' of obtaining an ultra-large specification processing material by using a relatively small-sized metal blank for hot-pressing compounding is an important route for preparing the ultra-large specification metal blank at present, and a key device in the route is a matched heating device.
The hot-pressing composite preparation method needs to heat a metal blank to a certain temperature and then keep the temperature for a period of time, then realizes thermal diffusion composite under the pressure of a large-scale press, and the metal blank needs to be continuously heated in a furnace to keep the temperature constant in the pressing process, so that dozens of tons or even hundreds of tons of super-large-specification metal blanks can be prepared. At present, aiming at metal blanks with ultra-large specifications, the existing heating furnace is difficult to meet the requirements in production, cannot be combined with a large-sized press for use, and particularly cannot be flexibly heated when the height of the metal blanks is changed, so that uneven heating and resource waste are easily caused. For example, the conventional hot isostatic pressing equipment is expensive, the furnace chamber is limited, and the hot isostatic pressing equipment cannot be transported to a large press to press, so that the production process is more complicated.
How to provide a heating furnace for hot-pressing and compounding ultra-large specification metal blanks becomes a technical problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention mainly aims to provide a heating furnace for hot-pressing and compounding of metal blanks with ultra-large specifications, so as to solve the problems.
In order to achieve the above object, the present invention provides a heating furnace for hot pressing and compositing ultra-large specification metal blanks, comprising: the furnace comprises a pressure-bearing base, a furnace shell arranged in sections, a cooling water circulation system and a temperature control device;
the furnace shells are arranged at the top end of the pressure-bearing base, and the cooling water circulation system is arranged on one side of the pressure-bearing base and communicated with the pressure-bearing base; the metal blanks are placed above the pressure-bearing base in a stacked manner;
and a plurality of longitudinally distributed heating wires are uniformly arranged in the furnace shell, and the heating wires are electrically connected with the temperature control device and used for adjusting the heating temperature of the metal blank.
Furthermore, the furnace further comprises a furnace cover, and during heating, the furnace cover is arranged at the top end of the furnace shell.
Furthermore, the device also comprises a pressurizing circular table, and when the pressurizing circular table is used for pressurizing, the pressurizing circular table covers the top end of the metal blank.
Furthermore, the temperature control device comprises a wiring bin, a temperature sensor and an electric control cabinet, wherein the wiring bin is installed on one side outside the furnace shell, a movable plug capable of sliding up and down is installed at the bottom of the wiring bin, and three jacks matched with the movable plug are arranged at the top of the wiring bin; a bottom jack matched with the movable plug is arranged above the pressure-bearing base, and the bottom jack is connected with the electric control cabinet through a power line; the pressure-bearing base is provided with a placing table at the central position, the temperature sensor is installed on the inner side of the upper part of the placing table, and the temperature sensor is electrically connected with the electric control cabinet.
Furthermore, the front of the electric control cabinet is respectively provided with an ammeter, a voltmeter, a temperature setter and a button of the three-phase power supply.
Furthermore, the top of the furnace shell is provided with a convex ring, and the bottom of the furnace shell is provided with a groove matched with the convex ring.
Furthermore, heat insulation materials are filled on the pressure-bearing base, in the furnace shell and in the furnace cover.
Further, the cooling water circulation system comprises a cooling water tank, a water inlet pipe, a water outlet pipe and an air cooler, wherein one end of the water inlet pipe is connected with the cooling water tank, the other end of the water inlet pipe is connected with a water inlet of the pressure-bearing base, and a water pump is mounted on the water inlet pipe; one end of the water outlet pipe is connected with a water outlet of the pressure-bearing base, and the other end of the water outlet pipe is connected with the cooling water tank; and an air cooler is installed on the cooling water tank, and a water changing port is arranged on the cooling water tank.
Furthermore, the furnace shell is externally provided with longitudinal and transverse reinforcing ribs, so that the strength in the hoisting process is ensured.
Furthermore, lifting lugs are connected above the pressure-bearing base, around the furnace shell and above the furnace cover.
The invention has the beneficial effects that:
the invention has simple structure and convenient assembly, can heat metal blanks with different heights by adjusting the number of the furnace shells, and heats the blanks in a stepped heating and heat preservation mode according to different types of metal materials; the pressurizing circular truncated cone is slowly pressurized by a large-scale press, and the metal blank is pressurized to carry out hot-pressing diffusion compounding, so that the metal material containing the easily segregated elements is more uniform in composition while the combination of the blanks is realized, the defects of local small holes, looseness and the like can be eliminated, and dozens to hundreds of tons of ultra-large-sized homogeneous and heterogeneous metal blanks can be constructed. In addition, the heating furnace also has the advantages of convenient lifting, simple structure, low cost and the like, and blanks with any height can be heated by combining a plurality of same furnace shells.
Drawings
FIG. 1 is a schematic assembly diagram of a heating furnace for hot-pressing and compounding oversized metal blanks according to the invention;
FIG. 2 is a front sectional view of a heating furnace for hot pressing and compounding oversized metal blanks in combination with a large die forging press according to the present invention;
FIG. 3 is a schematic structural diagram of a pressure-bearing base of a heating furnace for hot-pressing and compounding oversized metal blanks according to the invention;
FIG. 4 is a schematic structural diagram of a furnace shell of a heating furnace for hot-pressing and compounding oversized metal blanks according to the invention;
FIG. 5 is a schematic structural diagram of an electric control cabinet of a heating furnace for hot-pressing compounding of oversized metal blanks according to the invention;
fig. 6 is a schematic structural diagram of a cooling water circulation system for hot-pressing and compounding an oversized metal blank according to the invention.
Wherein, in the figure: 1-a pressure-bearing base, 101-a placing table, 102-a temperature sensor, 103-a bottom jack, 104-a power line, 105-a water inlet, 106-a water outlet and 107-a cooling cavity; 2-furnace shell, 201-heating wire, 202-convex ring, 203-groove, 204-wiring bin, 205-movable plug and 206-three jacks; 3-furnace cover; 4-an electric control cabinet, 401-an ammeter, 402-a voltmeter, 403-a temperature setter and 404-a button; 5-a cooling water circulation system, 501-a water outlet pipe, 502-a cooling water tank, 503-an air cooler, 504-a water changing port, 505-a water inlet pipe and 506-a water pump; 6-lifting lugs; 7-a metal blank; 8-a pressurizing circular table; 9-anvil mounting on press.
Detailed Description
To achieve the above objects and advantages, the present invention provides a technical means and a structure, which will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, the present invention provides a heating furnace for hot-pressing and compositing an oversized metal blank, comprising: the furnace comprises a pressure-bearing base 1, a furnace shell 2 arranged in sections, a cooling water circulation system 5 and a temperature control device; the furnace shells 2 are arranged at the top end of the pressure-bearing base 1, and the cooling water circulation system 5 is arranged at one side of the pressure-bearing base 1 and communicated with the pressure-bearing base 1; the metal blanks 7 are placed above the pressure-bearing base 1 in a stacked manner; a plurality of heating wires 201 are uniformly arranged in the furnace shell 2, and the heating wires 201 are electrically connected with the temperature control device and used for adjusting the heating temperature of the metal blank 7.
The furnace also comprises a furnace cover 3, and during heating, the furnace cover 3 is arranged at the top end of the furnace shell 2 for heat preservation.
The invention also comprises a pressurizing circular table 8, and when in pressurizing, the pressurizing circular table 8 covers the top end of the metal blank. A plurality of heating wires 201 are longitudinally and uniformly arranged on the inner side of the furnace shell 2, two adjacent heating wires 201 are connected in series, and the furnace shell 2 on the uppermost layer is not provided with the heating wires 201 and a junction box and is convenient to combine with the pressurizing circular table 8.
The temperature control device comprises a wiring bin 204, a temperature sensor 102 and an electric control cabinet 4, wherein the wiring bin 204 is installed at one side outside the furnace shell 2, a movable plug 205 capable of sliding up and down is installed at the bottom of the wiring bin 204, and three jacks 206 matched with the movable plug 205 are arranged at the top of the wiring bin; a bottom jack 103 matched with the movable plug 205 is arranged above the pressure-bearing base 1, the bottom jack 103 is connected with the electric control cabinet 4 through a power line 104, and the adjacent furnace shells 2 can be connected and electrified through the movable plug 205 and the three jacks 206; a placing table 101 is arranged at the central position on the pressure-bearing base 1, the temperature sensor 102 is installed on the inner side of the upper part of the placing table 101, and the temperature sensor 102 is electrically connected with the electric control cabinet 4.
In this embodiment, the front surface of the electric control cabinet 4 is respectively provided with an ammeter 401, a voltmeter 402, a temperature setter 403 and a button 404 of a three-phase power supply.
In this embodiment, a convex ring 202 is disposed on the top of the furnace shell 2, and a groove 203 is disposed on the bottom of the furnace shell and is matched with the convex ring 202. The groove 203 below the furnace shell 2 is combined with the placing table 101, the groove 203 between the adjacent furnace shells 2 is combined with the convex ring 202 to realize sealing connection, and the movable plug 205 is inserted into the jack to realize the electrification of the furnace shell 2.
In this embodiment, the pressure-bearing base 1, the furnace shell 2 and the furnace cover 3 are filled with heat-insulating materials, and the heat-insulating materials are made of high-temperature-resistant inorganic refractory materials, preferably aluminum silicate module heat-insulating materials, so that the purpose of energy conservation and heat insulation is achieved. The pressure-bearing base 1, the furnace shell 2 and the furnace cover 3 are separately designed, the furnace shell 2 is installed by section combination according to the height of a metal blank 7, and all the furnace shells 2 have the same specification; on one hand, the furnace shell is low in cost, simple in matching and convenient to hoist, on the other hand, the heating requirements of metal blanks 7 with different height specifications are met by adjusting the number of the furnace shells 2, and the blanks with any height can be theoretically heated and forged. The pressure-bearing base 1 can be designed to be round or square, and the corresponding placing platform 101, furnace shell 2 and furnace cover 3 can be designed to be round or square, so as to finally form a round or square heating device, preferably a round design. The pressure-bearing base 1 and the pressurizing circular truncated cone 8 are made of heat-resistant alloy steel.
The cooling water circulation system 5 comprises a cooling water tank 502, a water inlet pipe 505, a water outlet pipe 501 and an air cooler 503, wherein one end of the water inlet pipe 505 is connected with the cooling water tank 502, the other end of the water inlet pipe 505 is connected with a water inlet of the pressure-bearing base, and a water pump 506 is arranged on the water inlet pipe 505; one end of the water outlet pipe 501 is connected with a water outlet of the pressure-bearing base, the other end of the water outlet pipe is connected with the cooling water tank 502, a cooling cavity 107 is arranged in the pressure-bearing base, and the cooling cavity 107 is communicated with the water outlet and the water inlet; an air cooler 503 is installed on the cooling water tank 502, and a water change opening 504 is provided on the cooling water tank 502. The cooling water circulation system 5 cools the pressure-bearing base through water cooling, and prevents high temperature from damaging an electrical system and influencing external operation.
In this embodiment, the furnace shell 2 is externally provided with longitudinal and transverse reinforcing ribs to ensure the strength in the lifting process.
In the embodiment, the lifting lugs 6 are connected above the pressure-bearing base 1, around the furnace shell 2 and above the furnace cover 3, so that the lifting is convenient.
Placing stacked metal blanks 7 on the upper portion of the placing table 101, lifting the furnace shell 2 by a crane through a lifting lug 6 to be installed on the pressure-bearing base 1, combining the groove 203 with the placing table 101 to realize sealing connection, inserting the movable plug 205 into the bottom jack 103 to realize electrification of the furnace shell 2, determining the number of the furnace shells 2 to be installed according to the height of the metal blanks 7 until the height of the blanks is just covered, then covering the furnace cover 3, pressing a button 404 to start a power supply, and starting heating. Setting temperature and time on an electric control cabinet 4, heating the blank by adopting a step temperature rise and heat preservation mode, wherein the final heat preservation temperature of the titanium alloy is 950-1150 ℃, the final heat preservation temperature of the nickel and nickel alloy, the carbon steel and the alloy steel is 1000-1250 ℃, keeping the temperature and pressure for 2-24 h, then hanging a furnace cover 3 away, putting a pressurizing circular table 8, applying very slow pressure to the blank from the upper part by adopting a large-scale press machine to realize heat diffusion compounding of stacked metal blanks 7, finally removing an upper anvil 9 and the pressurizing circular table 8 of the press machine, hanging each layer of furnace shell 2 away in sequence, and taking out the processed blank.
The invention has simple structure and convenient assembly, can heat metal blanks with different heights by adjusting the number of the furnace shells, and heats the blanks in a stepped heating and heat preservation mode according to different types of metal materials; the final heat preservation temperature of the titanium alloy is 950-1150 ℃, the final heat preservation temperature of the nickel and nickel alloy, the carbon steel and the alloy steel is 1000-1250 ℃, the furnace cover is lifted away after 2-24 h of heat preservation and pressure maintaining, the upper part of the furnace cover is arranged in a pressurizing circular table, the pressurizing circular table is slowly pressed by a large-scale press, the metal blank is pressed for hot pressing, diffusion and compounding, the combination between the blanks is realized, simultaneously, the components of the metal material containing the elements easy to segregate are more uniform, the defects of local small holes, looseness and the like can be eliminated, and dozens to hundreds of tons of super-large-size homogeneous and heterogeneous high-quality metal blanks can be constructed. In addition, the heating furnace also has the advantages of convenient lifting, simple structure, low cost, wide application space and the like, and blanks with any height can be heated by combining a plurality of same furnace shells.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (10)
1. The utility model provides a heating furnace that is used for super large specification metal blank hot pressing to compound which characterized in that includes: the furnace comprises a pressure-bearing base, a furnace shell arranged in sections, a cooling water circulation system and a temperature control device;
the furnace shells are arranged at the top end of the pressure-bearing base, and the cooling water circulating system is arranged on one side of the pressure-bearing base and communicated with the pressure-bearing base; the metal blanks are placed above the pressure-bearing base in a stacked manner;
and a plurality of longitudinally distributed heating wires are uniformly arranged in the furnace shell, and the heating wires are electrically connected with the temperature control device and used for adjusting the heating temperature of the metal blank.
2. The furnace of claim 1, further comprising a furnace cover, wherein said furnace cover is mounted on top of said furnace shell during heating.
3. The furnace of claim 1, further comprising a pressing table, wherein the pressing table covers the top end of the metal billet during pressing.
4. The heating furnace for hot-pressing compounding of ultra-large specification metal blanks as claimed in claim 1, wherein the temperature control device comprises a wiring bin, a temperature sensor and an electric control cabinet, the wiring bin is mounted on one side of the outer part of the furnace shell, a movable plug capable of sliding up and down is mounted at the bottom of the wiring bin, and three jacks matched with the movable plug are arranged at the top of the wiring bin; a bottom jack matched with the movable plug is arranged above the pressure-bearing base, and the bottom jack is connected with the electric control cabinet through a power line; a placing table is arranged at the central position on the pressure bearing base, the temperature sensor is installed on the inner side of the upper portion of the placing table, and the temperature sensor is electrically connected with the electric control cabinet.
5. The heating furnace for hot-pressing compounding of ultra-large specification metal blanks as claimed in claim 4, wherein the front face of the electric control cabinet is respectively provided with an ammeter, a voltmeter, a temperature setter and a button of a three-phase power supply.
6. The furnace of claim 1, wherein the furnace shell has a raised ring on the top and a groove on the bottom for engaging the raised ring.
7. The heating furnace for the hot pressing compounding of the oversized metal blank as claimed in claim 2, wherein heat insulating materials are filled on the pressure-bearing base, in the furnace shell and in the furnace cover.
8. The heating furnace for hot-pressing compounding of ultra-large specification metal blanks as claimed in claim 1, wherein the cooling water circulation system comprises a cooling water tank, a water inlet pipe, a water outlet pipe and an air cooler, one end of the water inlet pipe is connected with the cooling water tank, the other end of the water inlet pipe is connected with a water inlet of the pressure-bearing base, and a water pump is mounted on the water inlet pipe; one end of the water outlet pipe is connected with a water outlet of the pressure-bearing base, and the other end of the water outlet pipe is connected with the cooling water tank; and an air cooler is installed on the cooling water tank, and a water changing port is arranged on the cooling water tank.
9. The heating furnace for hot pressing and compounding the ultra-large metal blank according to claim 1, wherein longitudinal and transverse reinforcing ribs are arranged outside the furnace shell to ensure the strength in the lifting process.
10. The heating furnace for hot-pressing compounding of oversized metal blanks as recited in claim 2, wherein lifting lugs are connected above the pressure-bearing base, around the furnace shell and above the furnace cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211412921.XA CN115717820A (en) | 2022-11-11 | 2022-11-11 | Heating furnace for hot-pressing compounding of metal blanks with ultra-large specifications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211412921.XA CN115717820A (en) | 2022-11-11 | 2022-11-11 | Heating furnace for hot-pressing compounding of metal blanks with ultra-large specifications |
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| Publication Number | Publication Date |
|---|---|
| CN115717820A true CN115717820A (en) | 2023-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211412921.XA Pending CN115717820A (en) | 2022-11-11 | 2022-11-11 | Heating furnace for hot-pressing compounding of metal blanks with ultra-large specifications |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115717820A (en) |
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- 2022-11-11 CN CN202211412921.XA patent/CN115717820A/en active Pending
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