CN115491482A - Stainless steel annealing furnace and annealing process - Google Patents
Stainless steel annealing furnace and annealing process Download PDFInfo
- Publication number
- CN115491482A CN115491482A CN202211294520.9A CN202211294520A CN115491482A CN 115491482 A CN115491482 A CN 115491482A CN 202211294520 A CN202211294520 A CN 202211294520A CN 115491482 A CN115491482 A CN 115491482A
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- Prior art keywords
- insulating brick
- heating elements
- brick layer
- stainless steel
- heating element
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- 238000000137 annealing Methods 0.000 title claims abstract description 47
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 22
- 239000010935 stainless steel Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 83
- 239000011449 brick Substances 0.000 claims description 55
- 229920000742 Cotton Polymers 0.000 claims description 15
- 238000004321 preservation Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 18
- 238000009413 insulation Methods 0.000 description 6
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to a stainless steel annealing furnace and an annealing process, which comprises an outer cover and an inner cover arranged on the inner side of the outer cover, wherein heating elements are arranged at the upper end and the lower end of the outer cover, the heating elements at the upper end are higher than the top of the inner cover, the heating elements at the lower end are lower than the bottom of the inner cover, the heating elements at the upper end correspond to the heating elements at the lower end one by one, the heating elements at the three upper end and the heating elements at the three lower end form heating element groups, the heating element groups are arranged at the left end and the right end of the outer cover, the heating element groups at the left end and the right end of the outer cover are mutually distributed in a staggered manner, each heating element group is provided with a fan corresponding to the heating element group, the fan is arranged on the outer cover, the fan is positioned between the heating elements at the upper end and the heating elements at the lower end, through grooves are formed at the left end and the right end of the inner cover, the heating elements heat the furnace, the fan can drive air circulation and circulate inside of the inner cover, so that the heat distribution is more uniform, the stainless steel annealing process is more uniform, and the annealing effect is better.
Description
Technical Field
The invention relates to the field of annealing furnaces, in particular to a stainless steel annealing furnace and an annealing process.
Background
Application No.: the invention patent of CN201721104841.2 discloses a stainless steel annealing furnace, which comprises a furnace wall and a hearth, wherein a temperature sensor is arranged on the furnace wall, a temperature sensing end of the temperature sensor is inserted into the hearth, the tail end of the temperature sensor is connected with a controller, a heating device is fixed in the hearth, the heating device is an upper heating device and a lower heating device, the upper heating device and the lower heating device are both connected with the controller, a heating cavity is formed between the upper heating device and the lower heating device, a furnace opening communicated with the heating cavity is formed in the furnace wall, a furnace cover is arranged at the furnace opening, the upper heating device and the lower heating device are symmetrically arranged up and down, the two heating devices are arranged, and the upper heating device and the lower heating device are silicon carbon rods. Above-mentioned technical scheme is at the during operation, can't promote inside hot-air and carry out the circulation flow, can cause the annealing of annealing stove not enough even, and annealing effect is not enough good.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides the stainless steel annealing furnace, which can circulate air during working, and has uniform annealing and good annealing effect.
The invention adopts the technical scheme for solving the technical problems that: the stainless steel annealing furnace comprises an outer cover and an inner cover arranged on the inner side of the outer cover, wherein heating elements are arranged at the upper end and the lower end of the outer cover, the heating elements at the upper end are higher than the top of the inner cover, the heating elements at the lower end are lower than the bottom of the inner cover, the heating elements at the upper end correspond to the heating elements at the lower end in a one-to-one manner, the heating elements at the three upper end and the heating elements at the three lower end form heating element groups, the heating element groups are arranged at the left end and the right end of the outer cover, the heating element groups at the left end and the right end of the outer cover are distributed in a staggered manner, each heating element group is provided with a fan corresponding to the heating element group, the fans are arranged on the outer cover, the fans are arranged between the heating elements at the upper end and the heating element at the lower end of the inner cover, the heating elements heat the furnace, the fans can drive air to circulate, the through grooves are designed, the air circulate inside of the inner cover, the heat is distributed more uniformly, the annealing effect of stainless steel is better, the heating element is more uniformly distributed in a staggered manner, and the air circulate.
In order to further perfect, the cotton layer of heat preservation is installed to the inboard upper end of dustcoat, and the cotton layer of side heat preservation is installed at both ends about the dustcoat inboard for the heat preservation effect of annealing stove is better, and is more energy-conserving.
Further perfect, the insulating brick layer is installed down to the dustcoat lower extreme for the heat preservation effect of annealing stove is better, and is more energy-conserving, and the insulating brick is current insulating brick.
Further perfect, the cotton layer of side heat preservation is kept away from dustcoat one end and is installed the side insulating brick layer, and side insulating brick layer upper end is passed through the closing plate and is connected, and the closing plate is located the cotton layer lower extreme that keeps warm for the heat preservation effect of annealing stove is better, and is more energy-conserving.
Further perfect, basement insulating brick layer is installed to insulating brick layer upper end down, and basement insulating brick layer equidistance interval sets up, and heating element is located between the basement insulating brick layer for the air cycle effect is better.
Further perfect, basement insulating brick layer upper end is installed and is supported insulating brick layer, supports insulating brick layer equidistance interval setting, and the inner cover is located and supports insulating brick layer upper end for the air cycle effect is better.
Further perfect, support and be connected with between the insulating brick layer and connect the insulating brick layer, connect the insulating brick layer and be connected with side insulating brick layer for heat transfer is even in the annealing stove, makes the heat preservation effect of annealing stove better.
Further perfect, the lower bottom surface of the inner cover is wavy, so that the contact area is increased, the heat absorption effect is good, and the air circulation effect is better.
An annealing process of a stainless steel annealing furnace comprises the following steps:
the method comprises the following steps: preheating, wherein the temperature is set to be 300 ℃, the heating rate is 50 ℃/h, 60 ℃/h, 80 ℃/h, 60 ℃/h and 50 ℃/h in sequence, and the temperature is kept for 1-2h after the preset temperature is reached;
step two: setting the temperature to be 500 ℃, increasing the temperature by 50 ℃/h per hour, and preserving the heat for 6-8h after the preset temperature is reached;
step three: cooling to 220-260 deg.c, taking out and air cooling;
the mechanical property of 500 ℃ annealing is optimal, the plate shape is good, and the internal residual stress is uniformly distributed.
The invention has the beneficial effects that: the heat insulation structure has the advantages that air can circulate when the heat insulation structure works, annealing is uniform, the annealing effect is good, the heating element heats the interior of the annealing furnace, the fan can drive the air to circulate, through grooves are designed, the air inside the inner cover can circulate, heat distribution is more uniform, stainless steel can anneal more uniformly, the annealing effect is better, the heating element is distributed in a staggered mode to heat more uniformly, the fan is distributed in a staggered mode to enable the air circulation effect to be better, the heat insulation cotton layer enables the heat insulation effect of the annealing furnace to be better, the sealing plate enables the heat insulation effect of the annealing furnace to be better and saves more energy, the base insulating brick layer and the support insulating brick layer are arranged at equal intervals, and the air circulation effect is better.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
fig. 3 is a schematic view showing the structure of the lower end of the sealing plate according to the present invention.
Description of the reference numerals: 1. a housing; 11. a side insulating brick layer; 12. a lower insulating brick layer; 121. a base insulating brick layer; 122. connecting the insulating brick layer; 123. supporting the insulating brick layer; 13. an upper heat insulation cotton layer; 131. a side heat-insulating cotton layer; 14. sealing plates; 15. a heating element; 16. a fan; 2. an inner cover; 21. a through groove.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-3: the embodiment of the stainless steel annealing furnace comprises an outer cover 1 and an inner cover 2 arranged on the inner side of the outer cover 1, wherein heating elements 15 are arranged at the upper end and the lower end of the outer cover 1, the heating element 15 at the upper end is higher than the top of the inner cover 2, the heating element 15 at the lower end is lower than the bottom of the inner cover 2, the heating element 15 at the upper end corresponds to the heating element 15 at the lower end one by one, the heating element 15 at the upper end and the heating element 15 at the lower end form a heating element group, heating element groups are arranged at the left end and the right end of the outer cover 1, the heating element groups at the left end and the right end are distributed in a staggered manner, each heating element group is provided with a fan 16 corresponding to the heating element group, the fan 16 is arranged on the outer cover 1, the fan 16 is positioned between the heating element 15 at the upper end and the heating element 15 at the lower end, and an upper heat-insulating cotton layer 13 is arranged at the inner side of the outer cover 1, both ends are installed and are leaned on cotton layer 131 of side heat preservation about dustcoat 1 inboard, insulating brick layer 12 down is installed to 1 lower extreme of dustcoat, cotton layer 131 of side heat preservation keeps away from 1 one end of dustcoat and installs side insulating brick layer 11, side insulating brick layer 11 upper end is passed through the closing plate 14 and is connected, closing plate 14 is located the cotton layer 13 lower extreme that keeps warm, insulating brick layer 121 is installed to lower insulating brick layer 12 upper end, insulating brick layer 121 is installed to basement, insulating brick layer 121 is equidistant to basement, heating element 15 is located between basement insulating brick layer 121, supporting insulating brick layer 123 is installed to basement insulating brick layer 121 upper end, supporting insulating brick layer 123 equidistance interval sets up, be connected with between the supporting insulating brick layer 123 and connect insulating brick layer 122, it is connected with side insulating brick layer 11 to connect insulating brick layer 122, inner cover 2 is located supporting insulating brick layer 123 upper end, logical groove 21 has all been opened at both ends about inner cover 2, inner cover 2 is lower bottom personally submitted the wave.
An annealing process of a stainless steel annealing furnace comprises the following steps:
the method comprises the following steps: preheating, setting the temperature to be 300 ℃, sequentially heating at the speed of 50 ℃/h, 60 ℃/h, 80 ℃/h, 60 ℃/h and 50 ℃/h, and keeping the temperature for 1-2h after reaching the preset temperature;
step two: setting the temperature to be 500 ℃, increasing the temperature by 50 ℃/h per hour, and preserving the heat for 6-8h after the preset temperature is reached;
step three: cooling to 220-260 deg.c, taking out and air cooling.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.
Claims (9)
1. The utility model provides a stainless steel annealing stove, includes dustcoat (1), installs at the inboard inner cover (2) of dustcoat (1), characterized by: heating elements (15) are arranged at the upper end and the lower end of the outer cover (1), the heating elements (15) at the upper end are higher than the top of the inner cover (2), the heating elements (15) at the lower end are lower than the bottom of the inner cover (2), the heating elements (15) at the upper end correspond to the heating elements (15) at the lower end one by one, the heating elements (15) at the three upper end and the heating elements (15) at the three lower end form heating element groups, the heating element groups are arranged at the left end and the right end of the outer cover (1), the heating element groups at the left end and the right end are distributed in a staggered mode, each heating element group is provided with a fan (16) corresponding to the heating element group, the fan (16) is arranged on the outer cover (1), the fan (16) is positioned between the heating elements (15) at the upper end and the heating elements (15) at the lower end, and through grooves (21) are formed at the left end and the right end of the inner cover (2).
2. The annealing furnace for stainless steel according to claim 1, wherein: the cotton layer (13) of keeping warm is installed to dustcoat (1) inboard upper end, and both ends are installed at dustcoat (1) inboard left and right sides and are leaned on cotton layer (131) that keeps warm.
3. The stainless steel annealing furnace according to claim 2, wherein: the lower end of the outer cover (1) is provided with a lower insulating brick layer (12).
4. The stainless steel annealing furnace according to claim 3, wherein: the side heat preservation cotton layer (131) are kept away from one end of the outer cover (1) and are provided with the side heat preservation brick layers (11), the upper ends of the side heat preservation brick layers (11) are connected through the sealing plates (14), and the sealing plates (14) are located at the lower ends of the upper heat preservation cotton layers (13).
5. The stainless steel annealing furnace according to claim 4, wherein: basement insulating brick layer (121) are installed to insulating brick layer (12) upper end down, and basement insulating brick layer (121) equidistance interval sets up, and heating element (15) are located between basement insulating brick layer (121).
6. The stainless steel annealing furnace according to claim 5, wherein: support insulating brick layer (123) are installed to basement insulating brick layer (121) upper end, support insulating brick layer (123) equidistance interval setting, and inner cover (2) are located support insulating brick layer (123) upper end.
7. The stainless steel annealing furnace according to claim 6, wherein: and a connecting insulating brick layer (122) is connected between the supporting insulating brick layers (123), and the connecting insulating brick layer (122) is connected with the side insulating brick layer (11).
8. The annealing furnace for stainless steel according to claim 7, wherein: the lower bottom surface of the inner cover (2) is wavy.
9. The annealing process of a stainless steel annealing furnace according to claim 8, characterized in that: the method comprises the following steps:
the method comprises the following steps: preheating, setting the temperature to be 300 ℃, sequentially heating at the speed of 50 ℃/h, 60 ℃/h, 80 ℃/h, 60 ℃/h and 50 ℃/h, and keeping the temperature for 1-2h after reaching the preset temperature;
step two: setting the temperature to be 500 ℃, increasing the temperature by 50 ℃/h per hour, and preserving the heat for 6-8h after the preset temperature is reached;
step three: cooling to 220-260 deg.c, taking out and air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211294520.9A CN115491482A (en) | 2022-10-21 | 2022-10-21 | Stainless steel annealing furnace and annealing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211294520.9A CN115491482A (en) | 2022-10-21 | 2022-10-21 | Stainless steel annealing furnace and annealing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115491482A true CN115491482A (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211294520.9A Pending CN115491482A (en) | 2022-10-21 | 2022-10-21 | Stainless steel annealing furnace and annealing process |
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| Country | Link |
|---|---|
| CN (1) | CN115491482A (en) |
Citations (11)
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|---|---|---|---|---|
| CN1884593A (en) * | 2006-07-05 | 2006-12-27 | 张家港市先进机电有限公司 | Sheet annealing furnace |
| CN103964679A (en) * | 2014-05-19 | 2014-08-06 | 浙江华尔绝热科技有限公司 | Tunnel type cellular glass annealing kiln |
| CN104071972A (en) * | 2014-07-24 | 2014-10-01 | 景丽 | Quartz glass annealing furnace |
| CN104313275A (en) * | 2014-10-20 | 2015-01-28 | 浙江宇辰工业炉有限公司 | Atmospheric box-type furnace |
| CN204918695U (en) * | 2015-08-27 | 2015-12-30 | 山东蓝天板业有限公司 | Energy -conserving galvanized sheet annealing stove |
| CN206073709U (en) * | 2016-08-12 | 2017-04-05 | 陕西安中机械有限责任公司 | Layering is staggeredly blown circulating industrial furnace |
| CN209276577U (en) * | 2018-09-26 | 2019-08-20 | 浙江华赢特钢科技有限公司 | A kind of silicon steel annealing furnace high pressure-temperature secondary use transfer device |
| CN210657063U (en) * | 2019-10-29 | 2020-06-02 | 浙江国邦钢业有限公司 | High-efficient qxcomm technology adds hot type annealing stove |
| CN212640569U (en) * | 2020-07-27 | 2021-03-02 | 靖江嘉仕德炉业有限公司 | Bell-type furnace |
| CN115044767A (en) * | 2022-07-04 | 2022-09-13 | 山东宏旺实业有限公司 | Annealing furnace structure for stainless steel band processing and annealing process |
| CN115141923A (en) * | 2022-07-05 | 2022-10-04 | 湖北中冶窑炉有限公司 | Argon-shielded anaerobic continuous solid solution furnace for stainless steel pipe and heat treatment method |
-
2022
- 2022-10-21 CN CN202211294520.9A patent/CN115491482A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884593A (en) * | 2006-07-05 | 2006-12-27 | 张家港市先进机电有限公司 | Sheet annealing furnace |
| CN103964679A (en) * | 2014-05-19 | 2014-08-06 | 浙江华尔绝热科技有限公司 | Tunnel type cellular glass annealing kiln |
| CN104071972A (en) * | 2014-07-24 | 2014-10-01 | 景丽 | Quartz glass annealing furnace |
| CN104313275A (en) * | 2014-10-20 | 2015-01-28 | 浙江宇辰工业炉有限公司 | Atmospheric box-type furnace |
| CN204918695U (en) * | 2015-08-27 | 2015-12-30 | 山东蓝天板业有限公司 | Energy -conserving galvanized sheet annealing stove |
| CN206073709U (en) * | 2016-08-12 | 2017-04-05 | 陕西安中机械有限责任公司 | Layering is staggeredly blown circulating industrial furnace |
| CN209276577U (en) * | 2018-09-26 | 2019-08-20 | 浙江华赢特钢科技有限公司 | A kind of silicon steel annealing furnace high pressure-temperature secondary use transfer device |
| CN210657063U (en) * | 2019-10-29 | 2020-06-02 | 浙江国邦钢业有限公司 | High-efficient qxcomm technology adds hot type annealing stove |
| CN212640569U (en) * | 2020-07-27 | 2021-03-02 | 靖江嘉仕德炉业有限公司 | Bell-type furnace |
| CN115044767A (en) * | 2022-07-04 | 2022-09-13 | 山东宏旺实业有限公司 | Annealing furnace structure for stainless steel band processing and annealing process |
| CN115141923A (en) * | 2022-07-05 | 2022-10-04 | 湖北中冶窑炉有限公司 | Argon-shielded anaerobic continuous solid solution furnace for stainless steel pipe and heat treatment method |
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