CN1329143C - Hot-blast furnace for casting mold and its baking method - Google Patents
Hot-blast furnace for casting mold and its baking method Download PDFInfo
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- CN1329143C CN1329143C CNB2005100609862A CN200510060986A CN1329143C CN 1329143 C CN1329143 C CN 1329143C CN B2005100609862 A CNB2005100609862 A CN B2005100609862A CN 200510060986 A CN200510060986 A CN 200510060986A CN 1329143 C CN1329143 C CN 1329143C
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- blast furnace
- heating
- casting mold
- casting
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- 238000005266 casting Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 239000004576 sand Substances 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000010425 asbestos Substances 0.000 claims description 5
- 230000009970 fire resistant effect Effects 0.000 claims description 5
- 229910052895 riebeckite Inorganic materials 0.000 claims description 5
- 230000001413 cellular effect Effects 0.000 claims description 4
- 244000035744 Hura crepitans Species 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract 6
- 238000009413 insulation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000002283 diesel fuel Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000003110 molding sand Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- -1 lute Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention discloses a moulding hot-blast furnace which belongs to cast industry. The present invention is particularly a hot-blast furnace of hot airflow output which is formed in a mode that continuous airflow which is generated by a high pressure blower is heated by an electric heating element. The present invention also relates to a baking method of the moulding hot-blast furnace, which is used for baking a casting mold, maintaining a moulding hot state, eliminating humidity, drying and baking. The present invention has the technical scheme that the right end of the moulding hot-blast furnace is provided with a high pressure blower; the high pressure blower outputs continuous airflow under the drive of a motor; after the continuous airflow passes through a pipeline to be pressed into a heating chamber which is composed of electric heating elements, and the airflow is heated by the electric heating elements, high temperature and high pressure hot airflow from 50 DEG to 350DEG is generated. The hot airflow forcibly conveys hot air in a mold cavity of a casting sand mould by four air outlet flanges which are arranged at the left side of the moulding hot-blast furnace and connected by metal hoses, so that the aims for baking the casting mold, maintaining a moulding hot state, eliminating humidity, drying and baking are achieved.
Description
Technical field
Hot-blast furnace for casting mold of the present invention relates to casting industry, and especially a kind of continuous flow that is produced by high pressure blower also forms the hot-blast stove that thermal current is exported through the heating heating,
The invention still further relates to hot-blast furnace for casting mold is used to cast mould drying, keeps that casting mold is hot, dehumidifying is dried and makes a kind of baking method of the usefulness of dry baking.
Background technology
At present, traditional foundry industry is continued to use chamber type electric resistance furnace or diesel oil oven for the method for casting mold mould drying always, and chamber type electric resistance furnace is at cabinet wall heating to be housed, and the heat that produces with heating toasts casting sand type.The diesel oil oven then is that employing diesel oil is that the heat that fuel produces by burning is dried casting sand type through baking oven again.The baking method of these two kinds of industrial furnaces is casting sand type to be placed in baking oven or the mould drying stove heat, make heat penetrate internal layer drying gradually by the sand mold outer wall, because the part that this mode of heating makes casting mold appearance and sandbox etc. not need to heat must get heating simultaneously, both wasted heat time heating time, wasted energy consumption again, this heating means can't make in the casting sand type die cavity simultaneously, each several part loam core and back-up sand, lute, asbestos cords etc. are fully dry, because the exhaust in casting sand type and loam core is not smooth, casting sand type and loam core are easy to generate crackle, thereby have influenced the quality of casting pouring.Above-mentioned this heating means can't solve heavy castings after branch mailbox divides core to advance in the mould drying stove baking, and the technical barrier of in joining the case process, lowering the temperature and making moist once more, particularly above-mentioned this heating means need be kept preference temperature for casting sand type when pouring into a mould, can't satisfy its pouring technology requirement especially.
Summary of the invention
In order to overcome the defective that the conventional cast industry exists for casting mould drying mode, a kind of hot-blast stove provided by the invention is air-flow that is produced by blower fan and the thermal current that forms through the heating heating, be transported to by force by pipeline in the chamber of casting sand type, outwards obtain drying gradually by casting sand type inside, both saved the time, more saved the energy.
The technical solution adopted for the present invention to solve the technical problems is: the right-hand member at hot-blast furnace for casting mold is provided with a high pressure blower, high pressure blower is under the driving of motor, export one continuous air stream, the continuous circulation of air piping of this strand is pressed into the heating clamber of being made up of heating, air stream promptly produces 50-350 ℃ HTHP thermal current through after the heating of heating.This strand thermal current is by being arranged on four air outlet flanges on the hot-blast furnace for casting mold left side, and under the connection of metal hose, hot-air is transported in the die cavity of casting sand type forcibly, to reach the casting mould drying, keep that casting mold is hot, dehumidifying is dried and to make the purpose of dry baking.
The present invention realizes that the principle of technical scheme is: added a continuous high pressure draught in the outside of heating heating clamber, arrived under the operation control of control panel electrical equipment interlock system reaches simultaneously.Hot-blast furnace for casting mold is provided with rated power 110kw, power-adjustable scope 30kw, 40kw, 60kw, 80kw, 110kw, and the connecting mode of its heating and operate power and the scope of application are as showing:
| Sequence number | Connecting mode | The connection group of heating | Power output | The scope of application |
| 1 | *Shape and △ shape | Two groups of series connection | 30kw | Smallclothes low temperature baking film or insulation |
| 2 | Y shape and Y shape | Two groups of series connection | 40kw | In, smallclothes bakings film or insulation |
| 3 | △ shape | One group of series connection | 60kw | Part baking film big or middle or insulation |
| 4 | △ shape and Y shape | Two groups of series connection | 80kw | Big part baking film or insulation |
| 5 | △ shape and △ shape | Two groups of series connection | 110kw | High-temperature baking film or especially big piece insulation |
The present invention realizes that the basic principle of technical scheme is: interlocked control is carried out in complete machine operation promptly limit temperature control, overtemperture control, operation control and time-delay control, the method of hot blast output temperature control is: when the temperature of hot blast reaches the predetermined temperature of technology, temperature control system can be indicated by temperature, the power supply of automatic disconnection heating, make it stop the system operation, when the hot blast temperature of output is lower than the technology predetermined temperature, temperature system also can be connected the power supply of being connected heating by delay cell time-delay 0-60 branch (regulating according to technological requirement) automatically by the temperature indication, it is put into operation, and Shu Chu hot blast temperature can remain in the predetermined temperature range like this.The limiting temperature value of control method when surpassing to(for) the hot blast temperature of exporting is: in a single day control malfunctioning automatically when the heating operating temperature; or when heating will surpass the limiting temperature of work permissible load; the automatic control of overtemperature prote circuit can be cut off the power supply of each grade operate power of heating immediately, guarantees the safety of heating.The method of blower fan and heating interlocking operation control is: when blower fan puts into operation when making pressure feedback signal reach predetermined value, the work loop and the control system thereof of heating just can be connected working power, later hot-blast stove ability normal operation input, if blower fan does not drop into, then can not put into operation the separately method of its interlocking of heating is irreversible.The know-why of time-delay control is: when hot-blast furnace for casting mold need be delayed time operation, whole hot-blast furnace for casting mold moves when the automatic control of delay circuit is downward, as long as regulate the temperature value in the hot-blast stove this moment, and set must time expand value, in case the hot-blast stove power supply is jumped automatically and is stopped when time expand arrives setting value.The present invention realizes that the baking method of technical scheme is: at first calculate the time of determining casting mold mould drying drying, its calculating with reference to formula is
In the formula: drying time---hour; The oven dry coefficient---get 50
The oven dry area---square metre; Operate power---kilowatt
The calculating of drying time should disagree because of the sand mold different in kind that adopts in actual mechanical process, simultaneously also different and different with the former dry condition of casting mold, being about to hot-blast furnace for casting mold after determining drying time hangs near the casting mold that moves to the needs oven dry, and joining power just can toast on the spot to casting mold, hot-blast furnace for casting mold of the present invention can be simultaneously to 4 independently casting mold toast on the spot, the method of baking is, end with metal hose connects the four air outlet flanges in the hot-blast furnace for casting mold left side, the other end inserts in the casting sand type, start hot-blast furnace for casting mold, the thermal current of hot-blast furnace for casting mold output is pressed in the die cavity of casting sand type forcibly, to reach the purpose of baking, it is not smooth that such baking method can solve the exhaust in casting sand type and loam core, can make each several part loam core and back-up sand in the sand mold die cavity, lute, thereby the fully dry casting quality that improved such as asbestos cord.Simultaneously also can be to single 300---1000 tons heavy castings toast on the spot or are incubated, heavy castings so both can have been solved after branch mailbox divides core to advance in the mould drying stove baking, and the technical barrier of in joining the case process, lowering the temperature and making moist once more, can satisfy the technological requirement that heavy castings needs when cast are kept preference temperature again.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is an overall construction drawing of the present invention.
Fig. 2 is the A of Fig. 1---the A profile.
Fig. 3 is the circuit theory diagrams of hot-blast furnace for casting mold.
Fig. 4 is each flow system figure of hot-blast furnace for casting mold.
Fig. 5 be hot-blast furnace for casting mold with the connection layout of casting mould drying.
Wherein, 1. drive motors, 2. high pressure blower, 3. blower fan seat, 4. blower fan hose connection, 5. air inlet, 6. instrument operation panel, 7. cooling window, 8. heating clamber, 9. air outlet, 10. air outlet adpting flange, n. thermocouple, 12. suspension ring, 13. casings.Among Fig. 2,8 heating clambers, the fire-resistant housing of cellular through hole in 13 casings, 14. heating clambers, 15. heatings.51. the hot blast input pipe, 52. casting mould drying upper boxes, 53. casting mould drying lower boxes, 54. loam cores, 55. molding sand, 56. thermal currents, 57. cover plates, 58. sealing asbestos.
The specific embodiment
At Fig. 1, among Fig. 2, drive motors 1, high pressure blower 2, be installed on the blower fan seat 3, blower fan hose connection 4, air inlet 5, heating clamber 8, air outlet 9, the employing screw connects, air outlet flexible pipe adpting flange 10 adopts and is welded to connect on air outlet 9, thermocouple 11 employings are revolved mouth and are threaded in the air outlet 9, to obtain the data of output hot blast temperature, and in time feed back to the electrical equipment interlocked control that control instrument is convenient to hot-blast furnace for casting mold, cooling window 7, instrument operation panel 6 adopts hinge to be connected with casing 13, suspension ring 12 adopt with casing 13 and are welded to connect, be convenient to lift and move and the integral body of large-scale casting mold after joining case is toasted on the spot, be installed on the electrical equipment on the instrument operation panel 6, thermocouple 11 adopts electrical equipment to connect with heating 15 in being installed in the fire-resistant housing 14 of the cellular through hole in heating clamber the inside.
At Fig. 1, in embodiment illustrated in fig. 2, the air communication that drive motors 1 drive high pressure blower 2 produces crosses blower fan connection flexible pipe 4 and air inlet 5 is pressed in the heating clamber 8, after the heating of the cold airflow heat that electric heating unit 15 is produced in the fire-resistant housing 14 of the cellular through hole in heating clamber 8 the insides, export one continuous thermal current, the continuous thermal current of this strand is connected 10 outputs of flexible pipe flange by air outlet 9 with air outlet, temperature control in the heat outputting air-flow, the signal of telecommunication that is produced by the thermocouple 11 that gos deep in the air outlet 9 feeds back to control instrument, controls the temperature value that sets by the circuit theory of Fig. 3 by control instrument.
In the embodiment shown in fig. 5, to casting pattern on the spot during dry mould drying, hot-blast furnace for casting mold moved to be fit to metal hose near the casting pattern and connect in the length range, one end of metal hose and hot-blast furnace for casting mold air outlet flexible pipe adpting flange are fixed, 51 of the other end hot blast input pipes of metal hose insert in the casting pattern sandbox, and with sealing asbestos 58 with the gap packing of hot blast input pipe 51 with casting pattern top box 52, use cover plate 57 with on the ventilator hole cover on the casting pattern top box 52 then, to prevent that thermal current 56 runs off at ventilating opening, start hot-blast furnace for casting mold high pressure blower power supply and set the hot blast power output this moment, determine hot blast output time (or manual control time), the thermal current 56 of hot-blast furnace for casting mold output is injected in the casting pattern nowel 53 by hot blast input pipe 51, make thermal current 56 to loam core 54 simultaneously, molding sand 55 diffusions, finally make loam core 54, moisture content in the sand mold 55 and wet gas are discharged from its surface, thereby reach drying gradually from inside to outside.
Claims (5)
1. a continuous flow that produces by high pressure blower and forms the hot-blast furnace for casting mold that thermal current is exported through the heating heating, it is characterized in that: this hot-blast stove also comprises drive motors (1), high pressure blower (2) is installed on the blower fan seat (3), air outlet flexible pipe adpting flange (10) adopts and is welded to connect on air outlet (9), thermocouple (11) employing is revolved mouth and is threaded in the air outlet (9), cooling window (7), instrument operation panel (6) adopts hinge to be connected with casing (13), suspension ring (12) adopt with casing (13) and are welded to connect, and are installed on the electrical equipment on the instrument operation panel (6), thermocouple (11) heating (15) interior with being installed in the heating clamber the inside fire-resistant housing of cellular through hole (14) adopts electrical equipment to connect.
2. the baking method of hot-blast furnace for casting mold according to claim 1, it is characterized in that: high pressure blower (2) is under the driving of motor (1), export one continuous air stream, the continuous circulation of air of this burst is crossed blower fan hose connection (4) and is pressed into the heating clamber of being made up of heating (8), after the heating of air stream through heating (15), promptly produce 50-350 ℃ HTHP thermal current, and the big I of this burst Continuous Heat air-flow realizes by the control circuit on the instrument operation panel (6), the continuous thermal current of this strand goes out one's intention as revealed in what one says flange (10) by being arranged on four of the hot-blast furnace for casting mold left side, and under the connection of metal hose, hot-air is transported to forcibly in the die cavity of casting sand type, one end of metal hose is fixed on cast form hot air outlet of still wind and connects by on the flange, other end hot blast input pipe (51) then inserts in the casting pattern sandbox, and with sealing asbestos (58) with the gap packing of hot blast input pipe (51) with casting pattern top box (52), use cover plate (57) with on the ventilator hole cover on the casting pattern top box (52) then, the thermal current (56) of hot-blast furnace for casting mold output is injected in the casting pattern nowel (53) by hot blast conveying pipe (51), make thermal current (56) to loam core (54) simultaneously, sand mold (55) diffusion, finally make loam core (54), moisture content in the sand mold (55) and wet gas are discharged from the outer surface of casting pattern, to reach drying gradually from inside to outside.
3. the baking method of hot-blast furnace for casting mold according to claim 2, it is characterized in that: the continuous air flow that high pressure blower (2) is produced under the driving of motor (1) is pressed in the heating clamber (8) by blower fan hose connection (4) and air inlet (5), forms thermal current after the heating of the cold air heat that heating (15) produces in heating clamber (8) the inside fire-resistant housing of cellular-shaped through hole (14).
4. the baking method of hot-blast furnace for casting mold according to claim 2, it is characterized in that: hot blast temperature is adjustable, the thermal current that hot-blast furnace for casting mold forms is when air outlet (9) is exported, automatically control for the control circuit on the instrument operation panel (6) by the signal of telecommunication immediate feedback that the thermocouple (11) that is installed in the air outlet (9) produces, or manually control.
5. the baking method of hot-blast furnace for casting mold according to claim 2, it is characterized in that: complete machine rated power 110kw, but its power output is adjustable, when the hot-blast furnace for casting mold power output is set in 30kw, hot-blast furnace for casting mold will be according to the operation of feedback circuit principle, and the power output of complete machine can be switched between 30kw, 40kw, 60kw, 80kw, 110kw mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100609862A CN1329143C (en) | 2005-09-29 | 2005-09-29 | Hot-blast furnace for casting mold and its baking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100609862A CN1329143C (en) | 2005-09-29 | 2005-09-29 | Hot-blast furnace for casting mold and its baking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1748902A CN1748902A (en) | 2006-03-22 |
| CN1329143C true CN1329143C (en) | 2007-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100609862A Expired - Fee Related CN1329143C (en) | 2005-09-29 | 2005-09-29 | Hot-blast furnace for casting mold and its baking method |
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| CN (1) | CN1329143C (en) |
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| CN102563860A (en) * | 2012-02-29 | 2012-07-11 | 李兰廷 | Electric heating hot blast stove for mine wellhead |
| CN105215292B (en) * | 2015-11-05 | 2017-12-29 | 浙江汉声精密机械有限公司 | A kind of sandbox baking mechanism of sand mold molding machine |
| CN106270380B (en) * | 2016-08-16 | 2018-04-20 | 东风汽车有限公司 | Foamed plastic model drying room |
| CN107588543A (en) * | 2017-11-03 | 2018-01-16 | 邹城市东基新热力管道防腐保温有限公司 | A kind of far infrared heater of wellhead anti-freezing |
| CN109985783A (en) * | 2019-04-09 | 2019-07-09 | 安徽应流集团霍山铸造有限公司 | Resin self-setting sand sand mold mold cavity surface drying oven |
| CN113333683A (en) * | 2021-05-21 | 2021-09-03 | 共享智能铸造产业创新中心有限公司 | Drying device and drying method for casting mold cavity |
| CN115235116A (en) * | 2022-08-05 | 2022-10-25 | 北京巨恒芯展环保科技有限公司 | Explosion-proof industrial air heating equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87211558U (en) * | 1987-08-04 | 1988-03-02 | 天津动力机厂 | Coal-combusting hot-air furnace unit |
| JPH074845A (en) * | 1993-06-11 | 1995-01-10 | Mayekawa Mfg Co Ltd | Method and device for drying mold for coating by use of heat pump |
| CN2233297Y (en) * | 1995-06-12 | 1996-08-21 | 机械工业部第六设计研究院 | Movable mould face drying device |
| CN2389029Y (en) * | 1999-09-06 | 2000-07-26 | 于基圃 | Carbon dioxide heater |
| JP2001179399A (en) * | 1999-12-24 | 2001-07-03 | Daido Steel Co Ltd | Drying method for casting mold |
| JP2001205395A (en) * | 2000-01-19 | 2001-07-31 | Kubota Corp | Casting mold drying device |
-
2005
- 2005-09-29 CN CNB2005100609862A patent/CN1329143C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87211558U (en) * | 1987-08-04 | 1988-03-02 | 天津动力机厂 | Coal-combusting hot-air furnace unit |
| JPH074845A (en) * | 1993-06-11 | 1995-01-10 | Mayekawa Mfg Co Ltd | Method and device for drying mold for coating by use of heat pump |
| CN2233297Y (en) * | 1995-06-12 | 1996-08-21 | 机械工业部第六设计研究院 | Movable mould face drying device |
| CN2389029Y (en) * | 1999-09-06 | 2000-07-26 | 于基圃 | Carbon dioxide heater |
| JP2001179399A (en) * | 1999-12-24 | 2001-07-03 | Daido Steel Co Ltd | Drying method for casting mold |
| JP2001205395A (en) * | 2000-01-19 | 2001-07-31 | Kubota Corp | Casting mold drying device |
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|---|---|
| CN1748902A (en) | 2006-03-22 |
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Owner name: ZHONGJIAN REFRACTORY PLANT, CHANGXING COUNTY Free format text: FORMER OWNER: ZHU XIAOMING Effective date: 20081114 |
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Effective date of registration: 20081114 Address after: General Tong Bridge, Hongxing Town, Changxing County, Zhejiang Patentee after: Changxing County Zhongjian refractory material factory Address before: Zhejiang province Changxing County Hong Xing Qiao Zhen Zhou tou village natural Village No. 10 Patentee before: Zhu Xiaoming |
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