CN108220582B - Anti-corrosion ceramic roller for automobile high-strength plate heating furnace - Google Patents
Anti-corrosion ceramic roller for automobile high-strength plate heating furnace Download PDFInfo
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- CN108220582B CN108220582B CN201810188190.2A CN201810188190A CN108220582B CN 108220582 B CN108220582 B CN 108220582B CN 201810188190 A CN201810188190 A CN 201810188190A CN 108220582 B CN108220582 B CN 108220582B
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- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- 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
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0012—Rolls; Roll arrangements
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention relates to an anti-erosion ceramic roller for an automobile high-strength plate heating furnace, which comprises: the ceramic roller rod is connected with iron heads at two ends of the ceramic roller rod, and is sleeved with a steel sleeve outside the ceramic roller rod, one end of the steel sleeve is fixedly arranged with the ceramic roller rod, and the other end of the steel sleeve can freely stretch out and draw back. According to the invention, the surface of the ceramic roller for the conventional automobile high-strength plate heating furnace is wrapped with a thin heat-resistant oxidation-resistant steel sleeve, so that an Al-Si coating on a thermal forming part is prevented from directly contacting with the ceramic roller, the roller breakage caused by the surface nodulation of the ceramic roller is avoided, the service life of the ceramic roller is prolonged, the maintenance cost of equipment is reduced, and the productivity of the equipment is improved.
Description
Technical Field
The invention relates to an anti-erosion ceramic roller for an automobile high-strength plate heating furnace.
Background
The automobile brings convenience to life of people, and exhaust emission also causes heavy burden to urban environment. The ultra-high strength steel hot stamping technology is a novel manufacturing technology which can reduce the weight of a vehicle body and improve the collision safety, and is applied and developed rapidly in the automobile manufacturing industry at home and abroad.
The ceramic roller is one of the main vulnerable parts which are frequently replaced in the high-strength steel hot stamping production equipment of the automobile, and the quality of the ceramic roller directly influences the normal operation of the heat treatment furnace and the yield and quality of the produced hot stamping parts. The hot-formed parts of the car are large in batch and reach millions, the raw material is mainly 22MnB5, and most of the surface of the raw material steel plate is provided with an Al-Si coating with the thickness of about 0.3mm, so that the surface oxidation is prevented during high-temperature heating; the width of the blank of the hot forming part is small or narrow, the thickness is very thin, generally about 1-2 mm, and the blank is transferred at high temperature in the production process by a ceramic roller. The patent with publication number CN203080024U of ceramic roller for heating furnace of high-strength plate of automobile introduces a ceramic roller conventionally used on a hot stamping forming production line, two ends of the ceramic roller are respectively connected with iron heads, the outer ends of the iron heads are provided with shaft heads, the shaft heads at the two ends are respectively connected with bearing seat components at two sides of the heating furnace, a sealing element is arranged between the shaft heads and the side wall of the heating furnace, and the shaft heads are cold-rolled sections. In the actual production process of the ceramic roller in contact with a large batch of Al-Si coating blanks, siO2 on the surface reacts with the Al-Si coating to form nodules, and the nodules penetrate into the surface of the ceramic roller by several millimeters, so that the strength of the ceramic roller is reduced, and brittle fracture is caused. The roll breakage rate of a thermal forming production line adopting the conventional ceramic roll rod reaches more than 30% every year, which is a great equipment maintenance cost, and simultaneously, the roll breakage halt also causes great equipment resource waste invisibly.
Disclosure of Invention
The invention aims to solve the technical problem that the ceramic roller in the existing automobile high-strength plate heating furnace is easy to react with an Al-Si coating in a blank to form nodules, so that the strength of the ceramic roller is reduced to cause the defect of brittle fracture.
In order to solve the technical problems, the technical scheme of the invention is as follows: an anti-erosion ceramic roll for an automotive high-strength-plate heating furnace, comprising: the ceramic roller comprises a ceramic roller rod, iron heads connected to two ends of the ceramic roller rod, and a steel sleeve sleeved outside the ceramic roller rod, wherein one end of the steel sleeve is fixedly arranged with the ceramic roller rod, the other end of the steel sleeve can freely stretch, one end of the ceramic roller rod is connected with a first iron head, and the other end of the ceramic roller rod is connected with a second iron head; one end of the steel sleeve is fixedly connected with the first iron head; and a guide block is arranged on the second iron head, a long groove matched with the guide block is formed in the other end of the steel sleeve, and the extending direction of the long groove is parallel to the axial direction of the ceramic roller rod.
Further, the guide block and the long groove are respectively a plurality of guide blocks and long grooves which are uniformly arranged around the circumference.
Furthermore, one end of the steel sleeve and the ceramic roller rod can be detachably arranged.
Furthermore, the thickness of the steel sleeve is 0.8 mm-1.5 mm.
Furthermore, the gap between the steel sleeve and the ceramic roller is 0.1 mm-1 mm.
An anti-erosion ceramic roll for an automotive high-strength-plate heating furnace, comprising: the ceramic roller rod is connected with the iron heads at the two ends of the ceramic roller rod and further comprises a steel sleeve which is sleeved outside the ceramic roller rod, one end of the steel sleeve is fixedly arranged on the ceramic roller rod, the other end of the steel sleeve can freely stretch out and draw back, two steel sleeves which are coaxially arranged are sleeved outside the ceramic roller rod, one ends of the steel sleeves are respectively fixedly connected with the iron heads at the two ends of the ceramic roller rod, and the distance is reserved between the other ends of the steel sleeves.
Further, the distance is larger than the sum of the high-temperature expansion elongation distances of the two steel sleeves.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. according to the invention, a very thin heat-resistant oxidation-resistant steel sleeve is wrapped on the surface of the ceramic roller for the conventional automobile high-strength plate heating furnace, so that an Al-Si coating on a thermal forming part is prevented from directly contacting with the ceramic roller, roller breakage caused by surface nodulation of the ceramic roller is avoided, the service life of the ceramic roller is prolonged, the maintenance cost of equipment is reduced, and the productivity of the equipment is improved.
2. The heat-resistant oxidation-resistant steel sleeve can be disassembled and replaced, and the ceramic roller rod is not limited by the service life of the heat-resistant oxidation-resistant steel sleeve, so that the service life of the ceramic roller is further prolonged.
Drawings
FIG. 1 is a schematic view showing the structure of the ceramic roll according to the first embodiment;
FIG. 2 is a perspective view of FIG. 1;
FIG. 3 is an enlarged cross-sectional view of the ceramic roll bar segment of FIG. 1;
FIG. 4 is a perspective view showing the structure of the ceramic roller according to the second embodiment.
Shown in the figure: 1. the device comprises a ceramic roller rod 2, a steel sleeve 3a, a steel sleeve 3b, an iron head 4, a guide block 5 and a long groove.
Detailed Description
To facilitate an understanding of the above-described objects, features and advantages of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Example one
Referring to fig. 1 to 3, a ceramic roller includes: the ceramic roller comprises a ceramic roller rod 1, iron heads 3a and 3b connected to two ends of the ceramic roller rod 1, and a heat-resistant oxidation-resistant steel sleeve 2 sleeved outside the ceramic roller rod 1. The ceramic roller 1 is made of solid or hollow fused quartz, and the iron heads 3a and 3b are used as supporting pieces to realize the connection of the ceramic roller 1 and bearing seat assemblies on two sides of the heating furnace.
One end 2a of the heat-resistant oxidation-resistant steel sleeve 2 is fixedly arranged with the ceramic roller rod 1, and the other end 2b can freely stretch and retract.
The specific implementation mode is as follows: one end 1a of the ceramic roller 1 is connected with a first iron head 3a with a conventional structure, the other end 1b of the ceramic roller 1 is connected with a second iron head 3b, and a guide block 4 is fixedly embedded in the second iron head 3 b; the other end 2b of the heat-resistant oxidation-resistant steel sleeve 2 is provided with a long groove 5 matched with the guide block 4, and the extending direction of the long groove 5 is parallel to the axial direction of the ceramic roller rod 1. Inserting said first iron head 3a together with one end 1a of the ceramic roller bar 1 from the other end 2b of the heat-resistant oxidation-resistant steel sleeve 2 until the guide block 4 engages with the elongated slot 5, and then fixedly connecting the first iron head 3a with one end 2a of the heat-resistant oxidation-resistant steel sleeve 2, such as: such as spot welding, riveting, or detachable modes such as threaded connection and clamping hook connection, at the moment, the other end 2b of the heat-resistant and oxidation-resistant steel sleeve 2 can freely stretch and retract relative to the ceramic roller rod 1 by means of the matching of the long groove 5 and the guide block 4.
The heat-resisting anti-oxidation steel sleeve 2 adopts the structure that one end and the ceramic roller stick 1 are fixedly arranged and the other end can freely stretch out and draw back, and is very beneficial: in the production and processing process, the extension distance of the thermal expansion of the heat-resistant oxidation-resistant steel sleeve 2 is greater than that of the ceramic roller rod 1, and when the other end of the heat-resistant oxidation-resistant steel sleeve 2 can freely stretch, the extension distance of the expansion is prevented from generating a tensile force on the ceramic roller rod 1, and the damage to the ceramic roller rod 1 is prevented. Meanwhile, the guide block 4 generates the constraint of the circumferential direction to the heat-resistant oxidation-resistant steel sleeve 2, when the Al-Si coating steel plate is produced in large scale, one end 2a and the other end 2b of the heat-resistant oxidation-resistant steel sleeve 2 rotate along with the ceramic roller 1 under the fixed connection force and the action of the guide block 4 respectively, and the Al-Si coating steel plate does not contact with SiO2 in the ceramic roller 1 through the heat-resistant oxidation-resistant steel sleeve 2 on the surface of the ceramic roller 1, so that the ceramic roller 1 is not corroded by forming nodules, and the service life of the ceramic roller 1 is greatly prolonged. If the heat-resistant oxidation-resistant steel sleeve 2 has problems, only the new heat-resistant oxidation-resistant steel sleeve 2 needs to be replaced, and the ceramic roller rod 1 with much higher cost does not need to be replaced, so that the cost is effectively saved.
The composite structure of the heat-resistant oxidation-resistant steel sleeve 2 and the ceramic roller rod 1 has remarkable advantages compared with the roller directly made of heat-resistant steel. If the heat-resistant steel roller is directly adopted to replace a ceramic roller, the deformation of the steel roller at the high temperature of 900 ℃ can occur, so that the obstacle and the deviation of materials in the feeding process can be caused. The thin-wall heat-resistant oxidation-resistant steel sleeve sleeved outside the ceramic roller rod is adopted, and the small gap between the thin-wall heat-resistant oxidation-resistant steel sleeve and the ceramic roller rod ensures that the thermal deformation of the steel sleeve is limited within an acceptable range by the ceramic roller rod.
The arrangement of the guide block 4 and the elongated slot 5 may be one or more, for example, 4 evenly arranged around the circumference in the present embodiment.
The selection of the wall thickness of the heat-resistant oxidation-resistant steel sleeve 2 needs to balance the deformation stress and the oxidation resistance, and the steel sleeve with the thicker wall thickness generates larger distortion stress at high temperature and can break the ceramic roller rod; steel sleeves with too thin a wall thickness have poor oxidation resistance and are prone to rust-through. Comprehensively, the thickness of the heat-resistant oxidation-resistant steel sleeve 2 is selected to be thin and is 0.8-1.5 mm, balance of various factors can be realized, the temperature resistance is higher than 950 ℃, and the service life of the ceramic roller is optimized.
The diameter of the steel sleeve is customized according to the outer diameter of the ceramic roller 1, the inner diameter is slightly larger than the outer diameter of the ceramic roller 1, the assembling clearance is between 0.1mm and 1mm, and the range is selected in consideration of assembling: if the clearance is too small, the assembly difficulty is high; on the other hand also transmission is considered: if the clearance is too large, the rotating jumping error is large, the conveying of materials is influenced, and the balance of various factors is also realized.
Example two
Referring to fig. 4, another ceramic roller includes: ceramic roller stick 1 is connected the iron heads 3a, 3b at the both ends of ceramic roller stick 1 to and the cover is established heat-resisting oxygen resistant steel bushing 21, 22 of two coaxial arrangements in the ceramic roller stick 1 outside, two the one end of heat-resisting oxygen resistant steel bushing 21, 22 is in the free state of releasing with the iron heads 3a, 3b fixed connection, the other end at the both ends of ceramic roller stick 1 respectively, and two be provided with interval d between the other end of heat-resisting oxygen resistant steel bushing 21, 22.
The function of sleeving two heat-resistant oxidation-resistant steel sleeves 21 and 22 on the ceramic roller rod 1 is the same as that of the first embodiment, and the heat-resistant oxidation-resistant steel sleeves 21 and 22 are Al-Si coatings on the isolation steel plates and can be detached and replaced. The difference lies in that the length of two steel jackets is shorter, and the dismouting is changed and is compared the embodiment first easily, and one end only needs to be connected with the iron head is fixed, and the other end is released freely. The distance d between the two heat-resistant oxidation-resistant steel sleeves 21, 22 needs to be selected to be greater than the sum of the high-temperature expansion elongation distances of the two heat-resistant oxidation-resistant steel sleeves 21, 22.
Claims (7)
1. An erosion-resistant ceramic roll for an automotive high-strength panel heating furnace, comprising: the ceramic roller comprises a ceramic roller rod and iron heads connected to two ends of the ceramic roller rod, and is characterized by further comprising a steel sleeve sleeved outside the ceramic roller rod, wherein one end of the steel sleeve is fixedly arranged with the ceramic roller rod, the other end of the steel sleeve can freely stretch, one end of the ceramic roller rod is connected with a first iron head, and the other end of the ceramic roller rod is connected with a second iron head; one end of the steel sleeve is fixedly connected with the first iron head; and a guide block is arranged on the second iron head, a long groove matched with the guide block is formed in the other end of the steel sleeve, and the extending direction of the long groove is parallel to the axial direction of the ceramic roller rod.
2. The ceramic roll for preventing erosion in a heating furnace for a high-strength plate of an automobile as set forth in claim 1, wherein said guide blocks and said elongated grooves are respectively provided in plural numbers which are arranged uniformly around the circumference.
3. The ceramic roll for an automotive high-strength panel heating furnace according to claim 1, wherein one end of said steel sleeve is detachably provided to said ceramic rod.
4. The erosion-resistant ceramic roll for a heating furnace of a high-strength plate of an automobile as set forth in claim 1, wherein said steel bushing has a thickness of 0.8mm to 1.5 mm.
5. The erosion-resistant ceramic roll for the heating furnace of the high-strength plate of the automobile as claimed in claim 1, wherein the gap between the steel sleeve and the ceramic roll rod is 0.1mm to 1 mm.
6. An erosion-resistant ceramic roll for an automotive high-strength panel heating furnace, comprising: the ceramic roller comprises a ceramic roller rod and iron heads connected to two ends of the ceramic roller rod, and is characterized by further comprising a steel sleeve sleeved outside the ceramic roller rod, wherein one end of the steel sleeve is fixedly arranged on the ceramic roller rod, the other end of the steel sleeve can freely stretch out and draw back, two steel sleeves which are coaxially arranged are sleeved outside the ceramic roller rod, one ends of the steel sleeves are respectively fixedly connected with the iron heads at two ends of the ceramic roller rod, and the distance is reserved between the other ends of the steel sleeves.
7. The ceramic roll for an automotive high-strength panel heating furnace according to claim 6, wherein said distance is greater than the sum of the high-temperature expansion elongation distances of said steel sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188190.2A CN108220582B (en) | 2018-03-07 | 2018-03-07 | Anti-corrosion ceramic roller for automobile high-strength plate heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188190.2A CN108220582B (en) | 2018-03-07 | 2018-03-07 | Anti-corrosion ceramic roller for automobile high-strength plate heating furnace |
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| Publication Number | Publication Date |
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| CN108220582A CN108220582A (en) | 2018-06-29 |
| CN108220582B true CN108220582B (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810188190.2A Active CN108220582B (en) | 2018-03-07 | 2018-03-07 | Anti-corrosion ceramic roller for automobile high-strength plate heating furnace |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07173524A (en) * | 1993-12-17 | 1995-07-11 | Nippon Steel Corp | Hearth roll of continuous annealing furnace for steel sheet |
| JP2002285229A (en) * | 2001-03-28 | 2002-10-03 | Ngk Insulators Ltd | Carrying roll |
| JP2003193175A (en) * | 2001-12-25 | 2003-07-09 | Kubota Corp | Single layer sleeve roll for rolling |
| CN201983614U (en) * | 2010-12-29 | 2011-09-21 | 佛山市南海金刚新材料有限公司 | External reinforced ceramic roller |
| CN203559075U (en) * | 2013-09-30 | 2014-04-23 | 南阳汉冶特钢有限公司 | No-accretion non-water-cooling roller-hearth type heat treatment furnace roller |
| CN206204381U (en) * | 2016-10-27 | 2017-05-31 | 烟台开发区蓝鲸金属修复有限公司 | A kind of steel ceramic combination CSP hearth rolls |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201713429U (en) * | 2010-06-22 | 2011-01-19 | 艾能赛克机械设备(江苏)有限公司 | Ceramic roller bed with telescopic elastic bearing |
| CN101983904A (en) * | 2010-11-29 | 2011-03-09 | 维苏威赛璐珂陶瓷(苏州)有限公司 | Fused quartz metallurgic roller |
| CN202925060U (en) * | 2012-11-16 | 2013-05-08 | 黄石山力兴冶薄板有限公司 | Novel ceramic roller device for silicon steel annealing furnace |
| CN203923309U (en) * | 2014-04-29 | 2014-11-05 | 苏州福瑞德陶瓷有限公司 | For the Quartz Ceramic Roller of electrical steel continuous annealing stove heat section |
| CN104651577B (en) * | 2015-03-17 | 2016-09-07 | 江苏南山冶金机械制造有限公司 | The processing method of hollow ceramic furnace roller |
| CN105861808A (en) * | 2016-05-18 | 2016-08-17 | 无锡华精新材股份有限公司 | Furnace roller for tunnel type furnace kiln |
| CN208008853U (en) * | 2018-03-07 | 2018-10-26 | 苏州普热斯勒先进成型技术有限公司 | The LP blades ceramic roller of automotive high intensity plate heating furnace |
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2018
- 2018-03-07 CN CN201810188190.2A patent/CN108220582B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07173524A (en) * | 1993-12-17 | 1995-07-11 | Nippon Steel Corp | Hearth roll of continuous annealing furnace for steel sheet |
| JP2002285229A (en) * | 2001-03-28 | 2002-10-03 | Ngk Insulators Ltd | Carrying roll |
| JP2003193175A (en) * | 2001-12-25 | 2003-07-09 | Kubota Corp | Single layer sleeve roll for rolling |
| CN201983614U (en) * | 2010-12-29 | 2011-09-21 | 佛山市南海金刚新材料有限公司 | External reinforced ceramic roller |
| CN203559075U (en) * | 2013-09-30 | 2014-04-23 | 南阳汉冶特钢有限公司 | No-accretion non-water-cooling roller-hearth type heat treatment furnace roller |
| CN206204381U (en) * | 2016-10-27 | 2017-05-31 | 烟台开发区蓝鲸金属修复有限公司 | A kind of steel ceramic combination CSP hearth rolls |
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| CN108220582A (en) | 2018-06-29 |
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