CN209802054U - heating device of aluminum bar - Google Patents
heating device of aluminum bar Download PDFInfo
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- CN209802054U CN209802054U CN201920369978.3U CN201920369978U CN209802054U CN 209802054 U CN209802054 U CN 209802054U CN 201920369978 U CN201920369978 U CN 201920369978U CN 209802054 U CN209802054 U CN 209802054U
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- aluminum bar
- heating furnace
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 160
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 108
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 16
- 239000007921 spray Substances 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims 1
- 239000004411 aluminium Substances 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 12
- 238000004321 preservation Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 85
- 235000012438 extruded product Nutrition 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of aluminum product processing, in particular to a heating device for an aluminum bar; the structure that the heating furnace liner of the electromagnetic power frequency heating furnace is in butt joint with the furnace chamber of the gas furnace is adopted, so that the aluminum bar is efficiently heated by the electromagnetic power frequency heating furnace to quickly reach the set heating temperature; because the electromagnetic coil is used for heating the aluminum bar by the electromagnetic power frequency heating furnace, and the electromagnetic coil in partial area needs to avoid the temperature measurement even needle, the uniform heating of all parts of the aluminum bar cannot be achieved; this scheme is through addding small-size gas furnace, and the part aluminium bar after electromagnetism power frequency heating furnace high efficiency heating continues to be carried to the furnace chamber of gas furnace in, through gas even heating furnace chamber, makes the aluminium bar obtain keeping warm, at the heat preservation in-process, makes the aluminium bar obtain even geothermy transmission, makes each position of aluminium bar obtain heating evenly to effectively improve the quality of the follow-up processing of aluminium bar.
Description
Technical Field
The utility model relates to an aluminum product processing technology field, in particular to heating device of aluminium bar.
background
The length of the raw material aluminum bar reaches 6 meters, and the raw material aluminum bar is generally cut or sawed into short bars with the length of less than 1 meter and then sent to the next procedure; before the aluminum bar is sawed or cut, the aluminum bar needs to be heated, and the heated aluminum bar can be directly sent into an extruder for extrusion.
in the prior art, a natural gas furnace or a line frequency furnace is generally adopted for heating in a heating process before aluminum bar extrusion. The natural gas furnace has the advantages of low heating efficiency, long preheating time, large furnace volume, troublesome alloy replacement in production, need of withdrawing the aluminum bar in the furnace and reheating a new aluminum bar, and influence on the production efficiency. The heating principle of the power frequency furnace is that the aluminum bar is heated by utilizing the electromagnetic eddy current effect, the heating speed of the scheme is high, but the stability is poor, the temperature difference of the aluminum bar core, the meter and two ends is large, the temperature measuring part cannot be heated by arranging an electromagnetic coil, the heating uniformity is poor, and the requirement of high-quality sectional materials is difficult to meet.
SUMMERY OF THE UTILITY MODEL
the utility model discloses the technical problem that will solve is: how to provide an aluminum bar heating device with rapid and uniform heating.
In order to solve the technical problem, the utility model discloses a technical scheme be:
a heating device for an aluminum bar comprises an electromagnetic power frequency heating furnace and a gas furnace;
the gas furnace comprises a furnace chamber, a gas spray pipe and a gas flow valve;
The gas spray pipe comprises a plurality of gas nozzles, and the gas nozzles are distributed on two sides of the furnace chamber;
the gas flow valve is arranged on the gas spray pipe;
The electromagnetic power frequency heating furnace comprises a heating furnace liner;
The discharge end of a heating furnace liner of the electromagnetic power frequency heating furnace is connected with the feed end of a furnace chamber of the gas furnace;
The length of the heating furnace pipe is longer than that of the furnace chamber.
Furthermore, in the heating device structure of the aluminum bar, the discharge end of the heating furnace pipe of the electromagnetic power frequency heating furnace extends into the furnace chamber of the gas furnace.
Furthermore, in the heating device structure of the aluminum bar, the discharge end of the heating furnace liner of the electromagnetic power frequency heating furnace extends to the outside of the extending part of the furnace chamber of the gas furnace and is coated with the heat insulation cotton layer.
Furthermore, in the structure of the heating device for the aluminum bar, each gas spray pipe is provided with a gas flow valve.
Furthermore, in the heating device structure of the aluminum bar, a temperature measurement even needle is arranged at the upper part of the furnace chamber of the gas furnace.
Furthermore, in the heating device structure of the aluminum bar, a through hole is formed in the upper portion of the furnace chamber, and the temperature measurement thermocouple needle penetrates through the through hole.
Furthermore, in the heating device structure of the aluminum bar, the heating device structure further comprises a conveying roller, wherein one part of the conveying roller is arranged at the feeding end of the heating furnace liner of the electromagnetic power frequency heating furnace, and the other part of the conveying roller is arranged at the discharging end of the furnace chamber of the gas furnace.
the beneficial effects of the utility model reside in that: the utility model provides a heating device structure of aluminum bar, which adopts a butt joint structure of a heating furnace liner of an electromagnetic power frequency heating furnace and a furnace chamber of a gas furnace, so that the aluminum bar is efficiently heated by the electromagnetic power frequency heating furnace and rapidly reaches a set heating temperature; because the electromagnetic coil is used for heating the aluminum bar by the electromagnetic power frequency heating furnace, and the electromagnetic coil in partial area needs to avoid the temperature measurement even needle, the uniform heating of all parts of the aluminum bar cannot be achieved; this scheme is through addding small-size gas furnace, and the part aluminium bar after electromagnetism power frequency heating furnace high efficiency heating continues to be carried to the furnace chamber of gas furnace in, through gas even heating furnace chamber, makes the aluminium bar obtain keeping warm, at the heat preservation in-process, makes the aluminium bar obtain even geothermy transmission, makes each position of aluminium bar obtain heating evenly to effectively improve the quality of the follow-up processing of aluminium bar.
Drawings
Fig. 1 is a schematic structural view of a heating device for an aluminum bar according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a gas furnace of a heating device for aluminum bars according to embodiment 1 of the present invention;
Fig. 3 is a sectional view of a gas furnace of a heating device for aluminum bars according to embodiment 1 of the present invention in the direction of a;
FIG. 4 is a schematic diagram showing the grain structure of an extruded product obtained by a line-frequency furnace heating method only;
fig. 5 is a schematic view of a grain structure of an extruded product obtained by a method of heating an aluminum rod according to embodiment 2 of the present invention;
description of reference numerals:
1. An electromagnetic power frequency heating furnace; 11. heating the furnace pipe; 2. a gas furnace; 21. a furnace chamber; 211. a through hole; 22. a gas nozzle; 221. a gas nozzle; 23. a gas flow valve; 3. a heat insulation cotton layer; 4. a temperature measurement thermocouple needle; 5. a conveying roller; 6. an aluminum bar.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: the structure that the heating furnace liner of the electromagnetic power frequency heating furnace is in butt joint with the furnace chamber of the gas furnace is adopted, part of the aluminum bars which are efficiently heated by the electromagnetic power frequency heating furnace are continuously conveyed into the furnace chamber of the gas furnace, and the furnace chamber is uniformly heated by gas, so that the aluminum bars are insulated.
Referring to fig. 1 to 5, the present invention relates to a heating device for aluminum bars, which comprises an electromagnetic power frequency heating furnace 1 and a gas furnace 2;
The gas furnace 2 comprises a furnace chamber 21, a gas nozzle 22 and a gas flow valve 23;
the gas nozzle 22 comprises a plurality of gas nozzles 221, and the gas nozzles 221 are distributed on two sides of the furnace chamber 21;
The gas flow valve 23 is arranged on the gas spray pipe 22;
The electromagnetic power frequency heating furnace 1 comprises a heating furnace pipe 11;
the discharge end of a heating furnace pipe 11 of the electromagnetic power frequency heating furnace 1 is connected with the feed end of a furnace chamber 21 of the gas furnace 2;
the length of the heating furnace pipe 11 is longer than that of the furnace chamber 21.
In the structure of the heating device of the aluminum bar, a structure that the heating furnace liner 11 of the electromagnetic power frequency heating furnace 1 is butted with the furnace chamber 21 of the gas furnace 2 is adopted, so that the aluminum bar 6 is efficiently heated by the electromagnetic power frequency heating furnace 1 to quickly reach the set heating temperature; because the electromagnetic coil is used for heating the aluminum bar 6 in the electromagnetic power frequency heating furnace 1, and the electromagnetic coil in a partial region needs to avoid the temperature measurement even needle 4, uniform heating of each part of the aluminum bar 6 cannot be achieved; this scheme is through addding small-size gas furnace 2, and the part aluminium bar 6 after 1 high-efficient heating of electromagnetism power frequency heating furnace continues to carry to the furnace chamber 21 of gas furnace 2 in, through gas even heating furnace chamber 21, makes aluminium bar 6 obtain keeping warm, and at the in-process of keeping warm, makes aluminium bar 6 obtain even geothermal transfer, makes 6 each parts of aluminium bar obtain evenly heating to effectively improve the quality of 6 subsequent processing of aluminium bar.
Further, in the above heating device structure of the aluminum bar, the discharge end of the heating furnace pipe 11 of the electromagnetic power frequency heating furnace 1 extends to the inside of the furnace chamber 21 of the gas furnace 2.
as can be seen from the above description, by extending the discharge end of the heating furnace chamber 11 of the electromagnetic power frequency heating furnace 1 into the furnace chamber 21 of the gas furnace 2, the heat energy loss caused by the transfer of the aluminum bar 6 between the electromagnetic power frequency heating furnace 1 and the gas furnace 2 is avoided, and the temperature of the workshop is increased; effectively saving energy and improving the workshop environment.
further, in the heating device structure of the aluminum bar, the outer part of the extending part of the discharge end of the heating furnace pipe of the electromagnetic power frequency heating furnace 1 extending to the furnace chamber 21 of the gas furnace 2 is coated with the heat preservation cotton layer 3.
as can be seen from the above description, the thermal insulation cotton layer 3 is coated outside the extension part extending from the discharge end of the heating furnace chamber of the electromagnetic power frequency heating furnace 1 to the furnace chamber 21 of the gas furnace 2, so that the heat energy loss caused by the transfer of the aluminum rod 6 between the electromagnetic power frequency heating furnace 1 and the gas furnace 2 is further avoided, and the temperature of the workshop is increased; effectively saving energy and improving the workshop environment.
Further, in the structure of the heating device for aluminum bars, each gas nozzle 22 is provided with a gas flow valve 23.
As can be seen from the above description, by providing one gas flow valve 23 per gas nozzle 22, the opening of each gas flow valve 23 can be adjusted according to the surface temperature of the aluminum bar 6, thereby making the temperature of the aluminum bar 6 more uniform.
Further, in the above heating device structure of the aluminum bar, a temperature measurement even needle 4 is arranged at the upper part of the furnace chamber 21 of the gas furnace 2.
As can be seen from the above description, the temperature measurement thermocouple needle 4 is arranged on the upper portion of the furnace chamber 21 of the gas furnace 2, and the temperature in the furnace chamber 21 is monitored in real time, so that the opening of each gas flow valve 23 is controlled, and the temperature in the furnace chamber 21 is controlled at the set temperature (the temperature measurement thermocouple needle 4 can be driven by a cylinder to be inserted downwards, contacts the surface of an aluminum rod, measures the temperature of the aluminum rod, is automatically withdrawn after the measurement is finished, and is pushed by another cylinder to cover a small cover plate on a temperature measurement hole, and is opened when the temperature measurement is needed).
Further, in the heating device structure of the aluminum bar, the upper portion of the furnace chamber 21 is provided with a through hole 211, and the temperature measurement thermocouple needle 4 penetrates through the through hole 211.
further, in the heating device structure of the aluminum bar, the heating device structure further comprises a conveying roller 5, wherein one part of the conveying roller 5 is arranged at the feeding end of the heating furnace pipe 11 of the electromagnetic power frequency heating furnace 1, and the other part of the conveying roller is arranged at the discharging end of the furnace chamber 21 of the gas furnace.
as can be seen from the above description, the conveying rollers 5 are provided for conveying the aluminum rods 6 between the industrial induction cooker and the gas furnace 2.
example 1
A heating device of an aluminum bar comprises an electromagnetic power frequency heating furnace 1 and a gas furnace 2; the gas furnace 2 comprises a furnace chamber 21, a gas nozzle 22 and a gas flow valve 23; the gas nozzle 22 comprises a plurality of gas nozzles 221, and the gas nozzles 221 are distributed on two sides of the furnace chamber 21; the gas flow valve 23 is arranged on the gas spray pipe 22; the electromagnetic power frequency heating furnace 1 comprises a heating furnace pipe 11; the discharge end of a heating furnace pipe 11 of the electromagnetic power frequency heating furnace 1 is connected with the feed end of a furnace chamber 21 of the gas furnace 2; the length of the heating furnace pipe 11 is longer than that of the furnace chamber 21.
The discharge end of the heating furnace pipe 11 of the electromagnetic power frequency heating furnace 1 extends into the furnace chamber 21 of the gas furnace 2. The outer part of an extension part of a heating furnace liner discharge end of the electromagnetic power frequency heating furnace 1 extending to a furnace chamber 21 of the gas furnace 2 is coated with a heat insulation cotton layer 3. Each gas nozzle 22 is provided with a gas flow valve 23. The upper part of the furnace chamber 21 of the gas furnace 2 is provided with a temperature measurement even needle 4. The upper part of the furnace chamber 21 is provided with a through hole 211, and the temperature measurement even needle 4 penetrates through the through hole 211. The heating device of the aluminum bar further comprises a conveying roller 5, one part of the conveying roller 5 is arranged at the feeding end of a heating furnace pipe 11 of the electromagnetic power frequency heating furnace 1, and the other part of the conveying roller is arranged at the discharging end of a furnace chamber 21 of the gas furnace.
example 2
a heating method of an aluminum bar comprises the following steps:
S1: conveying the aluminum bar into a heating furnace liner of an electromagnetic power frequency heating furnace, and heating to a first temperature through an electromagnetic coil;
S2: and conveying the aluminum bar heated to the set temperature into a furnace chamber of a gas furnace, and keeping the temperature of the gas heating furnace chamber in the gas furnace at a second temperature for 14min so as to uniformly heat the aluminum bar, wherein the second temperature is 5 ℃ higher than the first temperature.
the specific set temperature of the industrial frequency furnace and the set temperature of the gas furnace are determined according to different product processes, the set temperature of the existing rapid furnace is basically 0-10 ℃ higher than the set temperature of the industrial frequency furnace, for example, the industrial frequency furnace is set to heat to 523 ℃ and the rapid furnace is set to 525 ℃, and the process conditions are specifically seen. The heat preservation time is changed along with the length of the aluminum bar and is generally within 10-18 min. The short heat preservation time of the aluminum bar is relatively longer, and because a certain time is needed for producing and consuming a section of aluminum bar, and more aluminum bars are arranged in the short aluminum bar furnace, the heat preservation time can be naturally longer.
For example, the furnace body is assumed to be 2800mm long and 900mm long, three sections can be placed, and if the furnace body is 600mm long, 4 sections can be placed, and one section of aluminum rod is generally consumed for production for 4 minutes, and the temperature is estimated to be kept for at least 10-18 min.
The heating device for the aluminum bar in the embodiment 1 and the heating method for the aluminum bar 6 in the embodiment 2 are adopted to heat the aluminum bar 6, and technical indexes of an extruded product of the aluminum bar 6 are detected (namely, technical indexes of a product after equipment modification), and compared with technical indexes of an extruded product of a traditional aluminum bar 6 heated by only adopting a power frequency furnace (namely, technical indexes of a product before equipment modification), comparative data are shown in the following table:
TABLE 1 technical index table for extrusion products under different heating processes of aluminum bar 6
As can be seen from the above table and fig. 4 and 5, the extruded product obtained from the aluminum bar heated by the modified apparatus has no obvious agglomeration of the grain structure, the difference between the maximum grain and the minimum grain is small, the grain uniformity is greatly improved compared with the extruded product obtained by the conventional heating method, which indicates that the quality of the aluminum bar 6 in the subsequent processing is effectively improved.
to sum up, in the structure of the heating device for the aluminum bar provided by the utility model, the heating furnace liner of the electromagnetic power frequency heating furnace is butted with the furnace chamber of the gas furnace, so that the aluminum bar is efficiently heated by the electromagnetic power frequency heating furnace and rapidly reaches the set heating temperature; because the electromagnetic coil is used for heating the aluminum bar by the electromagnetic power frequency heating furnace, and the electromagnetic coil in partial area needs to avoid the temperature measurement even needle, the uniform heating of all parts of the aluminum bar cannot be achieved; this scheme is through addding small-size gas furnace, and the part aluminium bar after electromagnetism power frequency heating furnace high efficiency heating continues to be carried to the furnace chamber of gas furnace in, through gas even heating furnace chamber, makes the aluminium bar obtain keeping warm, at the heat preservation in-process, makes the aluminium bar obtain even geothermy transmission, makes each position of aluminium bar obtain heating evenly to effectively improve the quality of the follow-up processing of aluminium bar. The discharge end of the heating furnace liner of the electromagnetic power frequency heating furnace extends into the furnace chamber of the gas furnace, so that the heat energy loss caused by the transfer of an aluminum bar between the electromagnetic power frequency heating furnace and the gas furnace is avoided, and the temperature of a workshop is increased; effectively saving energy and improving the workshop environment.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (7)
1. a heating device of an aluminum bar is characterized by comprising an electromagnetic power frequency heating furnace and a gas furnace;
the gas furnace comprises a furnace chamber, a gas spray pipe and a gas flow valve;
The gas spray pipe comprises a plurality of gas nozzles, and the gas nozzles are distributed on two sides of the furnace chamber;
The gas flow valve is arranged on the gas spray pipe;
the electromagnetic power frequency heating furnace comprises a heating furnace liner;
The discharge end of a heating furnace liner of the electromagnetic power frequency heating furnace is connected with the feed end of a furnace chamber of the gas furnace;
The length of the heating furnace pipe is longer than that of the furnace chamber.
2. The heating device of the aluminum bar as claimed in claim 1, wherein the discharge end of the heating furnace pipe of the electromagnetic industrial frequency heating furnace extends to the inside of the furnace chamber of the gas furnace.
3. The heating device of the aluminum bar as claimed in claim 2, wherein the extension part of the discharge end of the heating furnace pipe of the electromagnetic industrial frequency heating furnace extending to the furnace chamber of the gas furnace is coated with a heat insulation cotton layer.
4. An apparatus for heating aluminum bars as defined in claim 1 wherein each gas nozzle is provided with a gas flow valve.
5. The apparatus for heating aluminum bar as claimed in claim 1, wherein a temperature measuring needle is provided at an upper portion of the furnace chamber of the gas furnace.
6. The heating apparatus for aluminum bar as claimed in claim 5, wherein the upper portion of the furnace chamber is provided with a through hole, and the temperature measurement probe is inserted into the through hole.
7. The heating apparatus for aluminum bar according to claim 1, further comprising a feeding roller, wherein a portion of the feeding roller is disposed at a feeding end of the heating furnace chamber of the electromagnetic industrial frequency heating furnace, and another portion of the feeding roller is disposed at a discharging end of the furnace chamber of the gas furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920369978.3U CN209802054U (en) | 2019-03-21 | 2019-03-21 | heating device of aluminum bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920369978.3U CN209802054U (en) | 2019-03-21 | 2019-03-21 | heating device of aluminum bar |
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| Publication Number | Publication Date |
|---|---|
| CN209802054U true CN209802054U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920369978.3U Active CN209802054U (en) | 2019-03-21 | 2019-03-21 | heating device of aluminum bar |
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| CN (1) | CN209802054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570638A (en) * | 2020-11-24 | 2021-03-30 | 浙江瑞朗锻造有限公司 | Roll forging die preheating device of roll forging machine |
-
2019
- 2019-03-21 CN CN201920369978.3U patent/CN209802054U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570638A (en) * | 2020-11-24 | 2021-03-30 | 浙江瑞朗锻造有限公司 | Roll forging die preheating device of roll forging machine |
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