CN217551132U - Low-pressure casting pipe with heating device - Google Patents
Low-pressure casting pipe with heating device Download PDFInfo
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- CN217551132U CN217551132U CN202221569879.8U CN202221569879U CN217551132U CN 217551132 U CN217551132 U CN 217551132U CN 202221569879 U CN202221569879 U CN 202221569879U CN 217551132 U CN217551132 U CN 217551132U
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- 238000005266 casting Methods 0.000 title claims abstract description 204
- 238000010438 heat treatment Methods 0.000 title claims abstract description 93
- 238000005485 electric heating Methods 0.000 claims abstract description 63
- 238000003825 pressing Methods 0.000 claims description 24
- 239000000919 ceramic Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 229910010293 ceramic material Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 21
- 229910052782 aluminium Inorganic materials 0.000 abstract description 21
- 239000007788 liquid Substances 0.000 abstract description 19
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 17
- 239000004411 aluminium Substances 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 3
- 238000010924 continuous production Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000004321 preservation Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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Abstract
The utility model relates to an aluminum alloy low pressure casting equipment accessories field discloses a low pressure casting pipe with heating device, including casting pipe casing, the fixed tile of heating pipe, casting pipe body, electric heating pipe, thermocouple and temperature control module, casting pipe casing cover is established on the casting pipe body, electric heating pipe has been placed in casting pipe casing's the periphery recess, and is a plurality of the fixed tile annular parcel of heating pipe lives electric heating pipe passes through the screw fixation on the casting pipe casing, electric heating pipe with the thermocouple respectively with temperature control module connects, the thermocouple sets up casting pipe casing upper portion. The utility model discloses an electric heating pipe, thermocouple and control by temperature change heating module heat and keep invariable temperature to low pressure casting machine casting tube body to can not reduce the temperature when making aluminium liquid flow through the casting tube body, avoided aluminium liquid to solidify and block up the inlet pipe on the casting tube, extension mould continuous production class practices thrift and maintains and retooling cost.
Description
Technical Field
The utility model relates to a low pressure casting equipment accessory field, concretely relates to low pressure casting pipe with heating device.
Background
The low-pressure aluminum alloy wheel hub casting is that compressed air is introduced into the heat preservation furnace through a pressurization control system of the low-pressure casting machine to pressurize the upper surface of the aluminum alloy solution in the heat preservation furnace, so that the aluminum alloy solution in the heat preservation furnace rises through a liquid lifting pipe and a casting pipe and enters a mould cavity from a feed inlet at the lower end of the mould, and then pressure is maintained for a period of time until the aluminum alloy solution in the whole wheel hub mould cavity is completely solidified. After the aluminum alloy solution in the die cavity is completely solidified, a pressurization control system of the low-pressure casting machine releases pressure according to the program setting requirement, and stably discharges compressed air in the heat preservation furnace, so that the aluminum alloy solution which is not solidified in the casting pipe and the liquid lifting pipe flows back into the heat preservation furnace under the action of gravity. In the continuous casting production process of the low-pressure casting machine, in order to ensure that the aluminum alloy solution can stably rise and flow back in each casting process, the casting pipe and the riser pipe are required to be always kept at higher temperature, and the casting machine is suitable for the up-and-down reciprocating flow of aluminum liquid.
At present, the casting pipe for casting the low-pressure aluminum alloy hub is coated with passive heat insulation materials such as ceramics, heat insulation cotton and the like. Because the casting pipe is arranged between the liquid lifting pipe of the heat preservation furnace and the feeding hole at the bottom of the mould, the casting pipe is easy to radiate heat after being exposed in an air environment for a long time, and meanwhile, the heat energy loss of the aluminum liquid can be caused in the process of the up-and-down reciprocating flow of the aluminum liquid, so that the surface of the aluminum liquid is solidified and crusted. In practice, after 5~6 shifts of continuous casting production, the wall hanging aluminum in the casting tube and the solidification and crusting are serious, particularly after the production is suspended for a period of time when abnormal problem treatment is carried out on the casting of the mold or workers are handed over, the temperature of the mold and the temperature of the casting tube are both greatly reduced, after the continuous recovery production, the aluminum alloy solution rises to the filling type circulation tube diameter and is cooled, the fluidity of the aluminum liquid is reduced or the aluminum liquid is partially solidified, the tube diameter is reduced, the feeding deficiency of the solidified aluminum liquid in the cavity of the aluminum mold in the casting tube is caused, the shrinkage defect is easily generated near the casting pouring port, and the casting is scrapped. Therefore, the temperature and the heat preservation effect of the casting pipe are needed to be improved, so that the molten aluminum in the casting pipe is always kept in the optimal temperature range, and the excellent fluidity and feeding capacity of the molten aluminum in the whole production process are ensured.
Disclosure of Invention
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
For this, the utility model provides a low pressure casting tube with heating device, including casting tube shell, the fixed tile of heating pipe, casting tube body, electric heating pipe, thermocouple and temperature control module, casting tube shell cover is established the surface of casting tube body, be equipped with a plurality of recesses in the periphery of casting tube shell, place in the recess electric heating pipe, it is a plurality of the fixed tile annular parcel of heating pipe is lived electric heating pipe passes through the screw fixation on the casting tube shell, electric heating pipe with the thermocouple respectively with temperature control module connects, the thermocouple sets up casting tube shell upper portion.
The utility model provides a low pressure casting tube with heating device, adopt the thermocouple to gather the temperature value of casting tube casing upper portion department, after feeding back temperature control module, heat/stop heating through temperature control program control electric heating pipe circular telegram/outage, the temperature of guaranteeing the casting tube body through self-heating is in controllable within range, make aluminium liquid fill the type through casting tube body department be unlikely to reduce more temperature, the temperature that keeps aluminium liquid and mobility are in better technological range, and then the temperature of guarantee aluminum alloy wheel hub casting technology.
Preferably, the casting pipe body is made of ceramic materials, the center of the casting pipe body is a circular truncated cone-shaped through hole, and the upper end of the casting pipe body is provided with an annular table.
In the scheme, the inner surface of the casting pipe body is in contact with the molten aluminum alloy, the ceramic material is heat-resistant and corrosion-resistant and does not chemically react with the molten aluminum alloy, the caliber of the upper end of the truncated cone-shaped through hole of the casting pipe body is matched with a pouring gate of the mold, and the annular table at the upper end of the casting pipe body is used for placing annular heat-insulating materials, so that the connection part of the casting pipe body and the mold has a better heat-insulating effect, and the heat loss is reduced.
Preferably, the casting pipe shell is made of a steel material, the casting pipe shell and the casting pipe body are equal in height, a concave platform is arranged at the upper end of the casting pipe shell and is flush with an annular platform of the casting pipe body, a wavy inward concave portion is arranged in the middle of the periphery of the casting pipe shell, a semicircular wave trough is arranged on the wavy inward concave portion, the electric heating pipe can be placed in the semicircular wave trough, the inner surface of the semicircular wave trough is attached to the cylindrical outer surface of the electric heating pipe, and the casting pipe shell is heated through the electric heating pipe so as to heat the casting pipe.
In this scheme, the casting tube casing is formed by the preparation of steel material, the heat conductivity is good, its inner surface is circular, the inseparable cover is established at the casting tube surface, the surface of casting tube casing is the wave, can set up electric heating pipe in the semi-circular trough of surface, and the semi-circular surface of the electric heating pipe who makes hugs closely at semi-circular trough internal surface, the heat that electric heating pipe circular telegram produced is partly direct to conduct whole casting tube casing through semi-circular trough internal surface, thermal another part of heat is then through heat radiation heating casting tube casing, the casting tube casing is with heat conduction to the casting tube body again after generating heat, the temperature that keeps the casting tube body maintains in the uniform temperature within range.
Preferably, the two sides of the semicircular wave trough of the casting pipe shell are provided with V-shaped wave troughs, wave crest circular arcs connected with the semicircular wave troughs are smoothly connected with the V-shaped wave troughs, a boss is further arranged between the two V-shaped wave troughs, a plurality of threaded holes are further formed in the boss, and one V-shaped wave trough is arranged between the semicircular wave trough and the boss.
In this scheme, the semi-circular trough both sides of casting pipe casing are equipped with the V-arrangement trough, reduce the thickness at the position of casting pipe casing except the semi-circular trough, be favorable to electric heating pipe's heat to pass through radiant heating V-arrangement trough, make the better conduction of heat to the casting pipe on, the boss that sets up between two V-arrangement troughs, then be used for the fixed tile of fixed heating pipe, make the reliable fixing of electric heating pipe between casting pipe casing and the fixed tile of heating pipe, the internal surface of the fixed tile of heating pipe then can the heat of reflection to the casting pipe casing.
Preferably, 90-degree V-shaped wave troughs are arranged on two sides of the semicircular wave trough of the casting pipe shell for mounting the electric heating pipe.
In this scheme, semi-circular trough both sides are equipped with 90 degrees V-arrangement troughs, make the internal surface of the fixed tile of heating pipe can be better the reflection heat to the casting tube casing on, and then improve the heating effect of casting tube department.
Preferably, the electric heating pipes are distributed along the same circumference with at least 10.
In the scheme, at least 10 electric heating pipes are distributed along the same circumference, so that the power of a single electric heating pipe is reduced, the failure rate of the electric heating pipe is reduced, and the heating effect is more uniform.
Preferably, the cross section of the heating pipe fixing tile is a plurality of circular equal parts, the plurality of heating pipe fixing tiles circularly surround the periphery of the casting pipe shell, a plurality of obtuse-angle pressing grooves and reflecting surfaces are arranged on the inner surface of each heating pipe fixing tile, the obtuse-angle pressing grooves correspond to the semicircular wave troughs one to one, a plurality of screw holes are arranged at positions, opposite to the reflecting surfaces, of the bosses, and the heating pipe fixing tiles are fixed on the bosses through screws.
In this scheme, a plurality of heating pipe fixed tiles become a circular around casting pipe casing after gathering together, fix the boss department at casting pipe casing and compress tightly electric heating pipe through the screw, the obtuse angle shape pressure tank of heating pipe fixed tile can reduce with electric heating pipe's contact surface and reduce calorific loss, obtuse angle shape pressure tank sets up with semi-circular trough one-to-one, the arc plane of reflection has more reflection area, and can more even reflection heat, make the heat by the better surface of reflection to casting pipe casing of plane of reflection, can more effectual improvement casting pipe casing's temperature.
Preferably, the two sides of the obtuse-angle pressing groove on the heating pipe fixing tile are provided with W-shaped infrared reflecting surfaces, and the surface roughness Ra of the W-shaped infrared reflecting surfaces is less than 0.8 μm.
In the scheme, the obtuse-angle-shaped pressing groove on the inner surface of the heating pipe fixing tile enables the obtuse-angle-shaped pressing groove to have a stable pressing angle with the electric heating pipe, and the obtuse-angle-shaped pressing groove has a gentle transition area with the arc-shaped reflecting surfaces on two sides of the obtuse-angle-shaped pressing groove, the obtuse-angle-shaped pressing groove can be angled between 100 degrees and 150 degrees, the phenomenon that more wall thickness is occupied due to the fact that the angle of the pressing groove is small is avoided, the thickness of the heating pipe fixing tile can be reduced, the surface roughness Ra value of the W-shaped infrared ray arc-shaped reflecting surface is smaller than 0.8 mu m, and the smooth reflecting surface can better reflect infrared ray heat.
Preferably, the outer surface of the heating pipe fixing tile is coated with a 1~2 mm ceramic heat insulation layer, so that the heating pipe fixing tile has excellent heat insulation characteristics.
In the scheme, in order to reduce heat dissipation from the outer surface of the heating pipe fixing tile, a 1~2 mm ceramic heat-insulating layer is arranged outside the heating pipe fixing tile, so that the heat-insulating performance of the heating pipe fixing tile is improved.
Preferably, a plurality of thermocouples are arranged on the cylindrical surface of the upper part of the casting pipe shell, and the thermocouple mounting bottom holes are 5~7 mm away from the inner surface of the casting pipe shell.
In the scheme, a thermocouple is arranged on the cylindrical surface of the upper part of the casting tube shell, the temperature value at the casting tube is monitored in real time and is used for being fed back to the temperature control module, and the electric heating tube is controlled to be powered on/off for heating/stopping heating through a temperature control program.
By adopting the low-pressure casting pipe with the heating device provided by any technical scheme, the thermocouple and the temperature control module work cooperatively, and the electric heating pipe is controlled to heat through the setting of the temperature control program of the low-pressure casting machine, so that the temperature of the casting pipe body is kept at 670-700 ℃.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the low-pressure casting pipe with the heating device is characterized in that a casting pipe shell, a heating pipe fixing tile and an electric heating pipe are arranged outside a casting pipe body between a riser pipe and a wheel hub die feeding port in a heat preservation furnace of a low-pressure casting machine, the temperature of the casting pipe shell is detected in real time through a thermocouple and a temperature control module, and the electric heating pipe is automatically controlled to heat and preserve heat according to the detected temperature, so that the casting pipe body is always kept in the optimal temperature range required by the flowing of molten aluminum. The aluminum liquid always keeps stable back and forth flow in the continuous production of the low-pressure casting machine, particularly, the accident that the feeding pipe is blocked due to the cooling of the casting pipe body after the production is suspended for a period of time is avoided, the continuous on-machine production shift of the die is effectively prolonged, the maintenance and die change cost of the casting machine is saved, and the shift production efficiency is improved.
Drawings
FIG. 1 is a sectional view of an autonomous heating device for a casting pipe of an aluminum alloy hub low-pressure casting machine of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 2;
FIG. 4 is a schematic diagram of a heating circuit of the temperature control module;
wherein: the device comprises a casting pipe shell 1, a semicircular wave trough 11, a V-shaped wave trough 13, a boss 15, a heating pipe fixing tile 2, an obtuse-angle-shaped pressing groove 22, a reflecting surface 24, a ceramic heat-insulating layer 26, a casting pipe body 3, an electric heating pipe 4, a thermocouple 5 and a temperature control module 6.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.
The utility model discloses a low pressure casting pipe with heating device described below with reference to fig. 1-4, including casting pipe body 3, casting pipe casing, the fixed tile 2 of heating pipe, electric heating pipe 4, thermocouple 5 and temperature control module 6, casting pipe casing cover is established the surface of casting pipe body 3, be equipped with a plurality of recesses in the periphery of casting pipe casing, place in the recess electric heating pipe 4, it is a plurality of 2 annular parcels of the fixed tile of heating pipe are lived electric heating pipe 4 and pass through the screw fixation on the casting pipe casing, electric heating pipe 4 with thermocouple 5 respectively with temperature control module 6 connects, thermocouple 5 sets up casting pipe casing upper portion.
The utility model discloses the low pressure casting pipe with heating device that the device provided, adopt thermocouple 5 to gather the temperature value of casting pipe casing upper portion department, feed back to temperature control module 6 after, heat/stop heating through 4 circular telegrams of temperature control program control electric heating pipe/outage, the temperature of guaranteeing casting pipe body 3 through self-heating is in controllable within range, make aluminium liquid fill the type through casting pipe body 3 be located to be unlikely to reduce more temperature, the temperature that keeps aluminium liquid and mobility are in better technological range, and then the temperature of guarantee aluminum alloy wheel hub casting technology.
Preferably, the casting tube body 3 is made of a ceramic material, the center of the casting tube body 3 is a circular truncated cone-shaped through hole, and an annular table is arranged at the upper end of the casting tube body 3.
In this scheme, 3 internal surfaces of casting pipe body contact with the aluminium alloy melt, and ceramic material is heat-resisting corrosion-resistant, does not take place chemical reaction with the aluminium alloy melt, and the upper end bore of the round platform shape through-hole of casting pipe body 3 matches with the runner of mould, and the annular platform of casting pipe body 3 upper end is used for placing annular insulation material, makes casting pipe body 3 and mould junction have better heat preservation effect, reduces thermal loss.
Preferably, the casting pipe shell is made of a steel material, the casting pipe shell and the casting pipe body 3 are equal in height, a concave platform is arranged at the upper end of the casting pipe shell and is flush with the annular platform of the casting pipe body 3, a wavy concave part is arranged in the middle of the periphery of the casting pipe shell, a semicircular wave trough 11 is arranged on the wavy concave part, the electric heating pipe 4 can be placed in the semicircular wave trough 11, the inner surface of the semicircular wave trough 11 is attached to the cylindrical outer surface of the electric heating pipe 4, and the casting pipe shell is heated through the electric heating pipe 4 so as to heat the casting pipe.
In this scheme, the casting tube casing is formed by the preparation of steel material, the heat conductivity is good, its inner surface is circular, the inseparable cover is established at the casting tube surface, the surface of casting tube casing is the wave, can set up electric heating pipe 4 in the semi-circular trough 11 of surface, and the semi-circular surface of the electric heating pipe 4 who makes hugs closely at semi-circular trough 11 internal surface, the heat partly direct conduction of the circular trough 11 internal surface of the circular trough of electricity production of electric heating pipe 4 conducts whole casting tube casing, thermal another part is then through heat radiation heating casting tube casing, the casting tube casing is conducted heat to casting tube body 3 after generating heat, the temperature that keeps casting tube body 3 maintains in certain temperature range.
Preferably, V-shaped wave troughs 13 are arranged on two sides of a semicircular wave trough 11 of the casting tube shell, wave crest circular arcs connected with the V-shaped wave troughs 13 and the semicircular wave troughs 11 are smoothly connected, a boss 15 is further arranged between the two V-shaped wave troughs 13, a plurality of threaded holes are further formed in the boss 15, and one V-shaped wave trough 13 is arranged between the semicircular wave trough 11 and the boss 15.
In this scheme, 11 both sides of the semi-circular trough of casting pipe casing are equipped with V-arrangement trough 13, reduce the thickness at the position of casting pipe casing except semi-circular trough 11, be favorable to electric heating pipe 4's heat to pass through radiant heating V-arrangement trough 13, make the better conduction of heat on the casting pipe, boss 15 that sets up between two V-arrangement troughs 13, then be used for the fixed tile 2 of fixed heating pipe, make the reliable fixing of electric heating pipe 4 between casting pipe casing and the fixed tile 2 of heating pipe, the internal surface of the fixed tile 2 of heating pipe then can the heat of reflection to the casting pipe casing on.
Preferably, 90-degree V-shaped wave troughs 13 are arranged on two sides of the semicircular wave trough 11 of the casting pipe shell for mounting the electric heating pipe 4.
In this scheme, semi-circular trough 11 both sides are equipped with 90 degrees V-arrangement troughs 13, make the heating pipe fixed tile 2's the internal surface can be better the reflection heat to the casting pipe casing on, and then improve the heating effect of casting pipe department.
Preferably, the electric heating pipes 4 are distributed along the same circumference with at least 10.
In the scheme, at least 10 electric heating pipes 4 are distributed along the same circumference, so that the power of a single electric heating pipe 4 is reduced, the failure rate of the electric heating pipe 4 is reduced, and the heating effect is more uniform.
Preferably, the cross section of the heating pipe fixing tile 2 is a plurality of equal parts of a circle, the plurality of heating pipe fixing tiles 2 circularly surround the periphery of the casting pipe shell, a plurality of obtuse-angle pressing grooves 22 and reflecting surfaces 24 are arranged on the inner surface of the heating pipe fixing tile 2, the obtuse-angle pressing grooves 22 correspond to the semicircular wave troughs 11 one by one, a plurality of screw holes are formed in positions, opposite to the reflecting surfaces 24, of the bosses 15, and the heating pipe fixing tiles 2 are fixed on the bosses 15 through screws.
In this scheme, become a circular around casting pipe casing after a plurality of heating pipe fixed tile 2 gather together, fix at casting pipe casing's boss 15 department and compress tightly electric heating pipe 4 through the screw, the obtuse angle shape pressure slot 22 of the fixed tile 2 of heating pipe can reduce with electric heating pipe 4's contact surface and reduce calorific loss, obtuse angle shape pressure slot 22 sets up with 11 one-to-one of semi-circular trough, arc plane of reflection 24 has more plane of reflection 24 long-pending, and can more even reflection heat, make the heat by the better surface of reflection of plane of reflection 24 to casting pipe casing, can more effectual improvement casting pipe casing's temperature.
Preferably, the W-shaped infrared reflecting surfaces 24 are arranged at two sides of the obtuse-angle pressing groove 22 on the heating pipe fixing tile 2, and the surface roughness Ra of the W-shaped infrared reflecting surfaces 24 is less than 0.8 μm.
In the scheme, the obtuse-angle-shaped pressing groove 22 on the inner surface of the heating pipe fixing tile 2 enables the obtuse-angle-shaped pressing groove 22 to have a stable top pressing angle with the electric heating pipe 4, and the obtuse-angle-shaped pressing groove 22 has a gentle transition area with the arc-shaped reflecting surfaces 24 on two sides of the obtuse-angle-shaped pressing groove 22, the obtuse-angle-shaped pressing groove 22 can have an angle of 100-150 degrees, the phenomenon that the wall thickness is large due to the fact that the angle of the pressing groove is small and occupied is avoided, the thickness of the heating pipe fixing tile 2 can be reduced, the surface roughness Ra value of the W-shaped infrared ray arc-shaped reflecting surface 24 is smaller than 0.8 mu m, and the smooth reflecting surface 24 can better reflect infrared ray heat.
Preferably, the outer surface of the heating pipe fixing tile 2 is coated with a layer of 1~2 mm ceramic heat insulation layer 26, so that the heating pipe fixing tile 2 has excellent heat insulation characteristics.
In the scheme, in order to reduce heat dissipation from the outer surface of the heating pipe fixing tile 2, a layer of 1~2 mm ceramic heat-insulating layer 26 is arranged outside the heating pipe fixing tile 2, so that the heat-insulating performance of the heating pipe fixing tile 2 is improved.
Preferably, a plurality of thermocouples 5 are arranged on the cylindrical surface of the upper part of the casting pipe shell, and the installation bottom holes of the thermocouples 5 are 5~7 mm away from the inner surface of the casting pipe shell.
In the scheme, a thermocouple 5 is arranged on the cylindrical surface of the upper part of the casting tube shell, the temperature value at the casting tube is monitored in real time and is used for being fed back to a temperature control module 6, and the electric heating tube 4 is controlled to be powered on/off for heating/stopping heating through a temperature control program.
By adopting the low-pressure casting pipe with the heating device provided by any technical scheme, the thermocouple 5 and the temperature control module 6 work cooperatively, and the electric heating pipe 4 is controlled to heat through the setting of a temperature control program of the low-pressure casting machine, so that the temperature of the casting pipe body 3 is kept at 670-700 ℃.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the low-pressure casting pipe with the heating device is characterized in that a casting pipe shell, a heating pipe fixing tile 2 and an electric heating pipe 4 are arranged outside a casting pipe body 3 between a liquid rising pipe in a heat preservation furnace of a low-pressure casting machine and a feeding hole of a hub die, the temperature of the casting pipe shell is detected in real time through a thermocouple 5 and a temperature control module 6, the electric heating pipe 4 is automatically controlled to heat and preserve heat according to the detected temperature, and the casting pipe body 3 is always kept in the optimal temperature range required by the flowing of molten aluminum. The aluminum liquid always keeps stable back and forth flow in the continuous production of the low-pressure casting machine, particularly, the accident that the feeding pipe is blocked due to the cooling of the casting pipe body 3 after the production is suspended for a period of time is avoided, the continuous on-machine production shift of the die is effectively prolonged, the maintenance and die change cost of the casting machine is saved, and the shift production efficiency is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a low pressure casting tube with heating device, includes casting tube casing (1), the fixed tile of heating pipe (2), casting tube body (3), electric heating pipe (4), thermocouple (5) and temperature control module (6), a serial communication port, casting tube casing (1) cover is established the surface of casting tube body (3), be equipped with a plurality of recesses in the periphery of casting tube casing (1), place in the recess electric heating pipe (4), it is a plurality of the fixed tile of heating pipe (2) annular parcel is lived electric heating pipe (4) are fixed through the screw on casting tube casing (1), electric heating pipe (4) with thermocouple (5) respectively with temperature control module (6) are connected, thermocouple (5) set up casting tube casing (1) upper portion.
2. The low-pressure cast casting tube with heating device according to claim 1, characterized in that the casting tube body (3) is made of ceramic material, the center of the casting tube body (3) is a circular truncated cone shaped through hole, and the upper end of the casting tube body (3) is provided with an annular table.
3. The low-pressure casting pipe with the heating device according to claim 2, wherein the casting pipe shell (1) is made of steel material, the casting pipe shell (1) has the same height as the casting pipe body (3), the upper end of the casting pipe shell (1) is provided with a concave platform which is flush with the annular platform of the casting pipe body (3), the middle of the periphery of the casting pipe shell (1) is provided with a wavy concave part, the wavy concave part is provided with a semicircular wave trough (11), the electric heating pipe (4) can be placed in the semicircular wave trough (11), the inner surface of the semicircular wave trough (11) is attached to the cylindrical outer surface of the electric heating pipe (4), and the casting pipe shell (1) is heated through the electric heating pipe (4) so as to heat the casting pipe.
4. The low-pressure casting tube with the heating device according to claim 3, characterized in that V-shaped troughs (13) are arranged on two sides of the semicircular trough (11) of the casting tube shell (1), the V-shaped troughs (13) are smoothly connected with the circular arc of the wave crest connected with the semicircular trough (11), a boss (15) is further arranged between the two V-shaped troughs (13), a plurality of threaded holes are further arranged on the boss (15), and one V-shaped trough (13) is arranged between the semicircular trough (11) and the boss (15).
5. The low-pressure casting pipe with the heating device according to claim 1, wherein the cross section of the heating pipe fixing tile (2) is a plurality of equal parts of a circle, a plurality of heating pipe fixing tiles (2) surround the periphery of the casting pipe shell (1) in a circular manner, a plurality of obtuse-angle pressing grooves (22) and reflecting surfaces (24) are arranged on the inner surface of the heating pipe fixing tile (2), the obtuse-angle pressing grooves (22) correspond to the semicircular wave troughs (11) in a one-to-one manner, a plurality of screw holes are formed in positions, opposite to the reflecting surfaces (24), of the bosses (15), and the heating pipe fixing tiles (2) are fixed on the bosses (15) through screws.
6. The low-pressure cast casting tube with heating device according to claim 5, characterized in that the obtuse pressing grooves (22) on the heating tube fixing tile (2) are provided with W-shaped infrared reflecting surfaces (24) at both sides, and the surface roughness Ra of the W-shaped infrared reflecting surfaces (24) is less than 0.8 μm.
7. The low-pressure casting pipe with a heating device according to claim 6, wherein the outer surface of the heating pipe fixing tile (2) is coated with a 1~2 mm ceramic insulation layer (26), so that the heating pipe fixing tile (2) has excellent insulation characteristics.
8. The low-pressure cast casting pipe with heating device according to claim 1, characterized in that a plurality of thermocouples (5) are arranged on the cylindrical surface of the upper part of the casting pipe shell (1), and the installation bottom holes of the thermocouples (5) are 5~7 mm away from the inner surface of the casting pipe shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221569879.8U CN217551132U (en) | 2022-06-22 | 2022-06-22 | Low-pressure casting pipe with heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221569879.8U CN217551132U (en) | 2022-06-22 | 2022-06-22 | Low-pressure casting pipe with heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217551132U true CN217551132U (en) | 2022-10-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221569879.8U Active CN217551132U (en) | 2022-06-22 | 2022-06-22 | Low-pressure casting pipe with heating device |
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| Country | Link |
|---|---|
| CN (1) | CN217551132U (en) |
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2022
- 2022-06-22 CN CN202221569879.8U patent/CN217551132U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG JINTAI AUTO PARTS MANUFACTURING CO.,LTD. Assignor: ZHEJIANG JINFEI KAIDA WHEEL Co.,Ltd. Contract record no.: X2024980004380 Denomination of utility model: A low-pressure casting pipe with heating device Granted publication date: 20221011 License type: Common License Record date: 20240412 |