CN102095309B - Vertical smelting furnace for continuously casting tungsten carbide - Google Patents
Vertical smelting furnace for continuously casting tungsten carbide Download PDFInfo
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- CN102095309B CN102095309B CN201110005040A CN201110005040A CN102095309B CN 102095309 B CN102095309 B CN 102095309B CN 201110005040 A CN201110005040 A CN 201110005040A CN 201110005040 A CN201110005040 A CN 201110005040A CN 102095309 B CN102095309 B CN 102095309B
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Abstract
The invention relates to a vertical smelting furnace for continuously casting tungsten carbide, which is of a vertical structure and consists three parts, namely a feeding part, a heating part and a cooling part, wherein the feeding part is used for providing a mixture of tungsten powders and tungsten carbide powders for the heating part; an inner step is arranged in a heating pipe of the heating part; a graphite funnel is arranged on the inner step and is provided with a lining with exhaust holes; the mixture is heated in the funnel to form a cast tungsten carbide solution in a WC+W2C eutectic structure, and the solution continuously drops to the cooling part; the cooling part is of a double-cooling structure consisting of a cooling air pipe and a bucket-type water cooling jacket or is in a direct water cooling structure; and the cooling part is used for quickly cooling the solution dropping from the heating part to a process temperature and conveying the solution outside the furnace. The smelting furnace has the advantages of high cooling speed, low degree of oxidation for materials, low energy consumption, high yield and continuous production and operation. In addition, the graphite funnel is provided with the lining with the exhaust holes, so that the heating pipe is prevented from being adhered with the graphite funnel, and the graphite funnel is convenient to be disassembled from the heating pipe.
Description
Technical field
The present invention relates to a kind of vertical casting wolfram varbide continuous smelting stove, the particularly a kind of vertical casting wolfram varbide continuous smelting stove that can realize continuous production cast tungsten carbide technology in cemented carbide industry.
Technical background
At present, cemented carbide industry generally all adopts horizontal carbon tube furnace at the production cast tungsten carbide, and tungsten powder and tungsten carbide powder compound are contained in the boat; Adopt the mode of a boat of each heating; Boat is placed horizontal carbon tube furnace, and compound forms cast tungsten carbide solution after being heated to liquid state, then boat is released outside the stove; In cooling vessel, obtain the cast tungsten carbide product by the high temperature cast tungsten carbide solution casting of operator about following 2800 degree of atmospheric environment after the cooling.There are shortcomings such as labor condition is poor, the material oxidation is serious in obvious this heating at intermittence, the outer pouring type of stove.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, provide that a kind of labor condition is good, the material degree of oxidation is little, energy consumption is low, output is high, can realize the vertical casting wolfram varbide continuous smelting stove of continuous production operation.
Technical scheme of the present invention: a kind of vertical casting wolfram varbide continuous smelting stove; Comprise vapor pipe, go up that stove is chewed, tremie pipe, top cover, upper shell, heat-generating pipe, funnel, let slip a remark, interior supporting seat, lower shell and refrigerating unit; Characteristic is to be provided with circular graphite funnel in the heat-generating pipe in this upper shell; Promptly be provided with interior step in this heat-generating pipe and form up big and down small heat tunnel; Step top is provided with circular graphite funnel in this heat tunnel, and this graphite funnel top is provided with and prevents that furnace charge from splashing and the lining of sidewall band venting hole, and this lining upper end extends in stove chews; The purpose that the lining of sidewall band venting hole is set on graphite funnel top is in order to prevent that furnace charge splash in blanking and boiling process from bonding together heat-generating pipe and graphite funnel; Guarantee the dismounting from heat-generating pipe of graphite funnel; Simultaneously, also through venting hole is set on the lining sidewall draining into outside the stove in the waste gas introducing vapor pipe.
The graphite funnel bottom is provided with removable leting slip a remark, and this center of leting slip a remark is provided with the aperture that communicates with the funnel bottom small opening.
The top cover of upper shell is provided with on vapor pipe and the circular cylinder body formula stove and chews, and stove is chewed and is provided with tremie pipe on this; The upper shell flange in the bottom is the flange in the bottom of supporting seat in the band, and the interior supporting seat of this flange in the bottom is provided with centre hole, and heat-generating pipe is set in this centre hole, and promptly the heat-generating pipe lower end is arranged in the interior supporting seat centre hole of flange in the bottom; Upper shell is connected with lower shell through the flange in the bottom with interior supporting seat, and this lower shell perisporium is respectively equipped with the following vapor pipe of observation tube and band valve;
Refrigerating unit comprise the cooling tracheae, down stove chew, bottom and cooling vessel, this cooling tracheae is uniformly distributed with and is arranged on the lower shell perisporium, following stove is chewed to sandwich-type water-cooled stove and is chewed; Following stove is chewed with lower shell and is connected; Stove was chewed outlet under its cooling tracheae outlet was pointed to, and bottom is an interbedded water cold type bottom, and this bottom is provided with flexible push rod; The bottom of the flexible push rod of this band is chewed suit with following stove and is formed bucket formula water jacket, and cooling vessel is arranged in this barrel formula water jacket.
The another kind of technical scheme of refrigerating unit; It comprises Lu Zui under cooling tracheae, the sandwich-type water-cooled, adds long bushing and the cooling vessel that is filled with water; This time stove is chewed the upper end and is connected with lower shell, and following Lu Zui lower end and add the long bushing suit is cooled off tracheae and is uniformly distributed with and is arranged on the lower shell perisporium; Stove was chewed outlet under its cooling tracheae outlet was pointed to, and the cooling vessel that is filled with water places and adds under the long bushing.
The one-piece construction of this continuous smelting stove is a vertical structure, and production work is made as continuously-running duty, and maximum operation (service) temperature is 3000 ℃, and type of heating is induction heating or resistive heating.Smelting furnace is divided into charging, heating, cooling three parts from top to down.That feeding part is responsible for is controlled, the compound of tungsten powder and tungsten carbide powder is provided to hot spots equably; Hot spots is responsible for making its formation have WC+W this compound heating
2The cast tungsten carbide solution of C eutectic structure, and solution continuously dropped to cooling segment; Cooling segment is responsible for the fallen solution of hot spots is quickly cooled to technological temperature and sees off outside the stove.
This continuous smelting stove production process: tungsten powder and tungsten carbide powder mixture charge continuously, evenly, controllably drop in the funnel through tremie pipe, in funnel, are heated and form to have WC+W
2The cast tungsten carbide solution of C eutectic structure, solution flows out from the bottom aperture of leting slip a remark and falls through lower shell with the freely falling body form, falls into container; Cooling gas is forced cooling through the cooling tracheae to the solution in the container, and through the two cooling effects to solution of bucket formula water jacket and cooling gas, solution is quickly cooled to technological temperature formation cast tungsten carbide product; Accomplishing cooled gas delivers to gas recovery system or directly enters atmosphere through following vapor pipe; Can observe what of cast tungsten carbide product in the container through observation tube, when product was fast full, feed mechanism stopped blanking; Treat that the wolfram varbide solution in the funnel has all fallen; Push rod drives bottom and container descends, and changes the work of an empty receptacle continued, and the waste gas that from funnel, produces drains into outside the stove through venting hole, upper shell, the last vapor pipe of lining;
The another kind of type of cooling is removed bottom, packs into during time stove chews adding long bushing, the water container that water coolant is housed is placed add under the long bushing; Close down the valve on the vapor pipe; Cooling gas discharges to water container through adding long bushing; Prevent that the outer atmosphere of stove from getting in the stove, wolfram varbide solution directly falls into the outer water container of stove, and other technology is the same; The purpose that adopts direct water-cooling is the speed of cooling that further quickening falls into the solution of container, to improve cast tungsten carbide product hardness and wear resistance; Compound continuously, evenly, controllably gets into funnel through tremie pipe; In funnel, constantly melt and form cast tungsten carbide solution sequentially; Solution constantly flows out from the bottom aperture of leting slip a remark, and falls in container or the water container, has realized the continuous production operation.
This smelting furnace is provided with the lining of sidewall band venting hole on the graphite funnel; Prevented that furnace charge splash and boiling splash from bonding together heat-generating pipe and graphite funnel; Guarantee the dismounting from heat-generating pipe of graphite funnel, speed of cooling is fast, the material degree of oxidation is little, energy consumption is low, output is high, can realize the continuous production operation.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a direct water-cooling structural representation of the present invention;
Among the figure: the last vapor pipe of 1-, the last stove of 2-is chewed, 3-tremie pipe, 4-lining, 5-top cover, 6-upper shell, 7-heat-generating pipe; The 8-funnel, 9-cast tungsten carbide solution, 10-lets slip a remark, supporting seat in the 11-, vapor pipe under the 12-, 13-valve; The 14-lower shell, 15-cools off tracheae, and stove is chewed under the 16-, 17-cooling vessel, 18-bottom, the 19-push rod that stretches; The 20-observation tube, 21-adds long bushing, the 22-cooling vessel that is filled with water, step in the 401-lining venting hole, 701-, 101-aperture.
Embodiment:
Referring to above-mentioned accompanying drawing; A kind of vertical casting wolfram varbide continuous smelting stove; Comprise vapor pipe 1, go up that stove chews 2, tremie pipe 3, top cover 5, upper shell 6, heat-generating pipe 7, funnel 8, let slip a remark 10, interior supporting seat 11, lower shell 14 and refrigerating unit; It is characterized in that being provided with in the heat-generating pipe 7 in this upper shell 6 circular graphite funnel 8, step 701 and form up big and down small heat tunnel in promptly being provided with in this heat-generating pipe 7, step 701 tops are provided with circular graphite funnel 8 in this heat tunnel; These funnel 8 tops are provided with and prevent that furnace charge from splashing and the lining 4 of sidewall band venting hole 401 in blanking and boiling process; These lining 4 upper ends extend stove and chew in 2, and funnel 8 bottoms are provided with one and removablely let slip a remark 10, and these 10 centers of leting slip a remark are provided with the aperture 101 that communicates with funnel 8 bottom small openings;
The top cover 5 of described upper shell is provided with on vapor pipe 1 and the circular cylinder body formula stove and chews 2, and stove is chewed 2 and is provided with tremie pipe 3 on this;
Described upper shell 6 flange in the bottom are the flange in the bottom of supporting seat 11 in the band, and the interior supporting seat 11 of this flange in the bottom is provided with centre hole, and heat-generating pipe 7 is set in this centre hole, and promptly the heat-generating pipe lower end is arranged in interior supporting seat 11 centre holes of flange in the bottom;
Described upper shell 6 is connected with lower shell 14 through the flange in the bottom with interior supporting seat 11, and these lower shell 14 perisporiums are respectively equipped with the following vapor pipe 12 of observation tube 20 and band valve 13;
Described refrigerating unit comprise cooling tracheae 15, down stove chew 16, bottom 18 and cooling vessel 17,
This cooling tracheae 15 is uniformly distributed with and is arranged on lower shell 14 perisporiums; Following stove is chewed 16 and is chewed for sandwich-type water-cooled stove, and following stove is chewed 16 and is connected with lower shell 14, and its cooling tracheae 15 outlets are pointed to down stove and chewed 16 outlets; Bottom 18 is an interbedded water cold type bottom; This bottom 18 is provided with flexible push rod 19, and the bottom 18 of the flexible push rod 19 of this band is chewed 16 suits with following stove and formed bucket formula water jacket, and cooling vessel 17 is arranged in this barrel formula water jacket.
The another kind of scheme of refrigerating unit is the direct water-cooling structure; It comprises that stove is chewed 16, added long bushing 21 and the cooling vessel 22 that is filled with water under cooling tracheae 15, the sandwich-type water-cooled; This time stove is chewed 16 upper ends and is connected with lower shell 14, and following stove is chewed 16 lower ends and added long bushing 21 suits, and cooling tracheae 15 is uniformly distributed with and is arranged on lower shell 14 perisporiums; Stove was chewed 16 outlets under its cooling tracheae 15 outlets were pointed to, and the cooling vessel 22 that is filled with water places and adds under the long bushing 21.
This smelting furnace production process (shown in Figure 1): tungsten powder and tungsten carbide powder mixture charge continuously, evenly, controllably drop in the funnel 8 through tremie pipe 3, in funnel 8, are heated and form to have WC+W
2The cast tungsten carbide solution 9 of C eutectic structure; Solution 9 flows out from the 10 bottom apertures 101 of leting slip a remark and falls through lower shell 14 with the freely falling body form, falls into container 17, and cooling gas is forced cooling through the solution in 15 pairs of containers 17 of cooling tracheae; Through the two cooling effects of bucket formula water jacket and cooling gas to solution; Solution is quickly cooled to technological temperature and forms the cast tungsten carbide product, accomplishes cooled gas and delivers to gas recovery system or directly enter atmosphere through vapor pipe 12 down, can observe what of cast tungsten carbide product in the container 17 through observation tube 20; When product is fast full; Stop blanking, treat that the solution 9 in the funnel 8 has all fallen, push rod 19 drives bottom 18 and descends with container 17; Change the work of an empty receptacle continued, the waste gas that from funnel 8, produces drains into outside the stove through venting hole 401, upper shell 6, the last vapor pipe 1 of lining 4;
When adopting the direct water-cooling mode (shown in Figure 2), remove bottom 18, chew in 16 adding the long bushing 21 time stove of packing into, the cooling vessel 22 that is filled with water that water coolant is housed is placed add under the long bushing 21; Close down the valve 13 on the vapor pipe 12; Cooling gas is through adding long bushing 21 to cooling vessel 22 dischargings that are filled with water; Prevent that the outer atmosphere of stove from getting in the stove; Solution 9 directly falls into the stove cooling vessel 22 that is filled with water outward, and the purpose that adopts direct water-cooling is further to accelerate to fall into the speed of cooling of the solution of container, to improve cast tungsten carbide product hardness and wear resistance;
Compound continuously, evenly, controllably gets into funnel 8 from tremie pipe 3; In funnel 8, constantly melt and form cast tungsten carbide solution 9 sequentially; Solution 9 constantly flows out from the 10 bottom apertures 101 of leting slip a remark; Fall container 17 or the cooling vessel 22 that is filled with water in, realized the continuous production operation.
Claims (1)
1. vertical casting wolfram varbide continuous smelting stove; Comprise vapor pipe (1), go up stove and chew (2), tremie pipe (3), top cover (5), upper shell (6), heat-generating pipe (7), funnel (8), let slip a remark (10), interior supporting seat (11), lower shell (14) and refrigerating unit, it is characterized in that:
Be provided with circular graphite funnel (8) in the heat-generating pipe (7) in the described upper shell (6); Promptly be provided with interior step (701) in this heat-generating pipe (7) and form up big and down small heat tunnel; Step in this heat tunnel (701) top is provided with circular graphite funnel (8); This funnel (8) top is provided with and prevents that furnace charge from splashing and the lining of sidewall band venting hole (401) (4); This lining (4) upper end extends stove and chews in (2), and funnel (8) bottom is provided with removable leting slip a remark (10), and this (10) center of leting slip a remark is provided with the aperture (101) that communicates with funnel (8) bottom small opening;
The top cover of described upper shell (5) is provided with on vapor pipe (1) and the circular cylinder body formula stove and chews (2), and stove is chewed (2) and is provided with tremie pipe (3) on this;
Described upper shell (6) flange in the bottom is the flange in the bottom of supporting seat (11) in the band; The interior supporting seat (11) of this flange in the bottom is provided with centre hole; Heat-generating pipe (7) is set in this centre hole, and promptly the heat-generating pipe lower end is arranged in interior supporting seat (11) centre hole of flange in the bottom;
Described upper shell (6) is connected with lower shell (14) through the flange in the bottom of supporting seat (11) in the band, and this lower shell (14) perisporium is respectively equipped with the following vapor pipe (12) of observation tube (20) and band valve (13);
Described refrigerating unit comprises cooling tracheae (15), stove is chewed (16), bottom (18) and cooling vessel (17) down,
This cooling tracheae (15) is uniformly distributed with and is arranged on lower shell (14) perisporium; Following stove is chewed (16) and is chewed for sandwich-type water-cooled stove, and following stove is chewed (16) and is connected with lower shell (14), and stove was chewed (16) outlet under its cooling tracheae (15) outlet was pointed to; Bottom (18) is an interbedded water cold type bottom; This bottom (18) is provided with flexible push rod (19), and stretch bottom (18) and the following stove of push rod (19) of this band chewed (16) suit and formed a barrel formula water jacket, and cooling vessel (17) is arranged in this barrel formula water jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110005040A CN102095309B (en) | 2011-01-12 | 2011-01-12 | Vertical smelting furnace for continuously casting tungsten carbide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110005040A CN102095309B (en) | 2011-01-12 | 2011-01-12 | Vertical smelting furnace for continuously casting tungsten carbide |
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| Publication Number | Publication Date |
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| CN102095309A CN102095309A (en) | 2011-06-15 |
| CN102095309B true CN102095309B (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110005040A Active CN102095309B (en) | 2011-01-12 | 2011-01-12 | Vertical smelting furnace for continuously casting tungsten carbide |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB890757A (en) * | 1959-01-06 | 1962-03-07 | Gen Electric | Improvements in or relating to the production of tungsten and molybdenum carbides |
| US5427761A (en) * | 1991-11-21 | 1995-06-27 | Pechiney Recherche | Process for the production of metal carbides having a large specific surface under atmospheric pressure inert gas scavenging |
| CN2603085Y (en) * | 2003-02-25 | 2004-02-11 | 株洲科泰感应加热设备有限公司 | Vertical intermediate frequency carbonizing furnace |
| CN101912974A (en) * | 2010-08-27 | 2010-12-15 | 株洲弗拉德科技有限公司 | Vertical superhigh-temperature continuous balling furnace |
| CN201917201U (en) * | 2011-01-12 | 2011-08-03 | 株洲弗拉德科技有限公司 | Vertical cast carbonized tungsten continuous melting furnace |
-
2011
- 2011-01-12 CN CN201110005040A patent/CN102095309B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB890757A (en) * | 1959-01-06 | 1962-03-07 | Gen Electric | Improvements in or relating to the production of tungsten and molybdenum carbides |
| US5427761A (en) * | 1991-11-21 | 1995-06-27 | Pechiney Recherche | Process for the production of metal carbides having a large specific surface under atmospheric pressure inert gas scavenging |
| CN2603085Y (en) * | 2003-02-25 | 2004-02-11 | 株洲科泰感应加热设备有限公司 | Vertical intermediate frequency carbonizing furnace |
| CN101912974A (en) * | 2010-08-27 | 2010-12-15 | 株洲弗拉德科技有限公司 | Vertical superhigh-temperature continuous balling furnace |
| CN201917201U (en) * | 2011-01-12 | 2011-08-03 | 株洲弗拉德科技有限公司 | Vertical cast carbonized tungsten continuous melting furnace |
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| Publication number | Publication date |
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| CN102095309A (en) | 2011-06-15 |
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Denomination of invention: Vertical smelting furnace for continuously casting tungsten carbide Effective date of registration: 20160316 Granted publication date: 20120912 Pledgee: Zhuzhou SDIC innovation venture investment Co., Ltd. Pledgor: Fullad Technology (Zhuzhou) Co., Ltd. Registration number: 2016980000024 |
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Date of cancellation: 20180528 Granted publication date: 20120912 Pledgee: Zhuzhou SDIC innovation venture investment Co., Ltd. Pledgor: Fullad Technology (Zhuzhou) Co., Ltd. Registration number: 2016980000024 |