CN103017539B - The manufacture method of continuous-type furnace and fire door and this fire door - Google Patents
The manufacture method of continuous-type furnace and fire door and this fire door Download PDFInfo
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- CN103017539B CN103017539B CN201310014244.0A CN201310014244A CN103017539B CN 103017539 B CN103017539 B CN 103017539B CN 201310014244 A CN201310014244 A CN 201310014244A CN 103017539 B CN103017539 B CN 103017539B
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Abstract
The invention provides the manufacture method of a kind of continuous-type furnace and fire door and this fire door, this fire door comprises stove door plant and hanger, described stove door plant is installed on the stove gate of continuous-type furnace by described hanger, described stove door plant is an overall structure, and described stove door plant and described hanger are heat-resistance stainless steel Cr28Ni48 material, a part for described hanger is by being fixedly welded on described stove door plant.Stove door plant is designed to an overall structure by the present invention, and use heat-resistance stainless steel Cr28Ni48 material, it not only can be high temperature resistant, and intensity increases greatly, not easily scaling loss, be out of shape, break down, thus to increase the service life, reduce article consumption and reduce risk, save production cost, enhance productivity.
Description
Technical field
The present invention relates to a kind of continuous-type furnace, particularly relate to a kind of fire door and manufacture method thereof of continuous-type furnace, belong to technical field of metallurgical equipment.
Background technology
Continuous-type furnace is widely used in each enterprise of metallurgy industry, and such as, for steel mill, the object of steel heating has several as follows:
Improve the plasticity of steel, to reduce the resistance of deformation of steel when hot-working, thus reduce the plant equipment accidents such as the wearing and tearing box roll breakage of roll in rolling.
Make blank internal and external temperature even, to avoid the major defect or the waste product that cause finished product because temperature stress is excessive.
The crystalline structure or the elimination that improve metal add the internal stress formed man-hour.
In a word, the heating of steel has direct relation for the quality of steel, output, energy consumption and mechanical life etc.
Along with improving constantly of output of steel and rising steadily of fuel price, and the accounting of enterprises benefit-cost is deeply further, technical requirement for steel rolling continuous-type furnace is also more and more higher, need constantly to adopt various technology to improve heating efficiency to heating furnace transformation, improve heating quality, reduce energy consumption, improve effects.
At present, continuous-type furnace is all furnished with fire door, and object obtains good sealing property, minimizing heat loss.In continuous-type furnace fire door many employings water-cooling structure, steel construction upper refractory material or steel construction, parcel is containing structures such as zirconium tapetum fibrosums.The fire door of this structure, in production application process, due to temperature distortion, mainly has the following disadvantages:
Heating furnace in-furnace temperature is high, is in high-temperature district for a long time inside fire door, and oxidization burning loss is fast, and service life is not long, consumes larger;
In fire door, the outside temperature difference is comparatively large, and temperature distortion is inconsistent, the easy sealing-off in welding position;
Fire door refractory material scaling loss, vibrate when adding that stove is tapped, refractory material comes off, and exacerbates the scaling loss of fire door;
Water-cooling furnace door is once welding portion sealing-off is leaked, very big on whole stove impact;
Fire door is changed also inconvenient in production, dangerous large.
Summary of the invention
The object of the present invention is to provide a kind of continuous-type furnace and fire door thereof, solving the easy scaling loss of fire door that prior art exists, when being out of shape and breaking down on producing, the larger problem of safety of workers impact.
In order to solve the problem, the invention provides a kind of continuous-type furnace fire door, it comprises stove door plant and hanger, described stove door plant is installed on the stove gate of continuous-type furnace by described hanger, it is characterized in that, described stove door plant is an overall structure, and described stove door plant and described hanger are heat-resistance stainless steel Cr28Ni48 material, and a part for described hanger is by being fixedly welded on described stove door plant.
According to a kind of preferred embodiment of above-mentioned continuous-type furnace fire door, wherein, described hanger is paired adjacent layout.
According to a kind of preferred embodiment of above-mentioned continuous-type furnace fire door, wherein, also comprise the reinforcement gusset for increasing bonding strength between described stove door plant and described hanger, described reinforcement gusset is all connected by welding with described stove door plant, adjacent often pair described hanger.
According to a kind of preferred embodiment of above-mentioned continuous-type furnace fire door, wherein, one end of described hanger is provided with earhole, and described earhole is used for through bearing pin so that described stove door plant is installed to described stove gate.
According to a kind of preferred embodiment of above-mentioned continuous-type furnace fire door, wherein, the weld of described stove door plant and described hanger has groove, and the weld seam between described stove door plant and described hanger is groove weld.
In addition, in order to solve the problem, the present invention also provides a kind of continuous-type furnace, and it comprises fire door, and wherein, described fire door is above-mentioned arbitrary described continuous-type furnace fire door.
In order to solve the problem, the invention provides a kind of manufacture method of continuous-type furnace fire door, it is characterized in that, comprising following operating procedure successively: step one, respectively the welding position of the stove door plant cast in advance and hanger is polished level and smooth; Step 2, continuous welding is carried out with special welding rod after stove door plant step one obtained and hanger are heated to predetermined temperature, under described predetermined temperature, the scheduled time is incubated after welding, then cooling obtains described continuous-type furnace fire door, described welding rod is A407 welding rod, and described predetermined temperature is 150 ~ 200 ° of C.
According to a kind of preferred embodiment of the manufacture method of above-mentioned continuous-type furnace fire door, wherein, in described step one, be also included in the sub-step that groove is offered in described welding position.
According to a kind of preferred embodiment of the manufacture method of above-mentioned continuous-type furnace fire door, wherein, in described step 2, also comprise following sub-step: strengthen gusset placing between hanger described in a pair before welding after the heating, and described reinforcement gusset and described stove door plant and described hanger are welded together.
According to a kind of preferred embodiment of the manufacture method of above-mentioned continuous-type furnace fire door, wherein, the described scheduled time is 6 ~ 8h.
Stove door plant is designed to an overall structure by the present invention, and use heat-resistance stainless steel Cr28Ni48 material, it not only can be high temperature resistant, and intensity increases greatly, not easily scaling loss, be out of shape, break down, thus to increase the service life, reduce article consumption and reduce risk, save production cost, enhance productivity.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of fire door preferred embodiment of the present invention;
Fig. 2 is the side-looking structural representation of fire door preferred embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Fig. 1 and Fig. 2 schematically illustrates the structure of fire door preferred embodiment of the present invention, center distance stove door plant 1 is symmetrically arranged with between two couples of hanger 2(, two pairs of hangers selects the distance of regulation according to actual conditions, be such as 900mm), it will be appreciated by those skilled in the art that quantity and the position of hanger 2 can change according to actual needs.
As shown in Figure 1, when this fire door preferred embodiment comprises stove door plant 1(practical application, the size of this stove door plant can up to long 1720mm × wide 400mm), hanger 2 and strengthen gusset 3.Hanger 2 is fixed on the top of stove door plant 1, and especially, stove door plant 1 is an overall structure, and stove door plant 1 and hanger 2 are heat-resistance stainless steel Cr28Ni48 material, and hanger 2 is welded on stove door plant 1 and (such as 2/3 of ear length all can be welded on stove door plant 1).The stove door plant 1 not easily deformed damaged of Integral-structure type, heat-resistance stainless steel Cr28Ni48 material makes stove door plant 1 can be high temperature resistant, not easily scaling loss.
In order to increase the intensity between stove door plant 1 and hanger 2, this preferred embodiment is provided with strengthens gusset 3, and hanger 2 is adjacent paired layout.Adjacent paired hanger 2 be arranged in parallel, is welded with one and strengthens the quantity that gusset 3(strengthens gusset 3 and can design as required between often pair of hanger 2, be such as 2 or more than 2), meanwhile, strengthen gusset 3 and also directly weld with stove door plant 1.In addition, the weld of stove door plant 1 and hanger 2 is groove weld 10, and utilize A407 welding rod to carry out continuous welding, weld bead height can reach 15mm.
For the ease of application, this preferred embodiment also comprises bearing pin 4, in the earhole of bearing pin 4 through adjacent often pair of hanger 2.
Shown in shop drawings 1 during fire door preferred embodiment, stove door plant 1 and hanger 2 are first all cast, then by the welding position of the two with grinder buffing smoothly, offer groove.During welding, stove door plant 1 and hanger 2 are heated to certain temperature, such as 150 ~ 200 DEG C (can be 155 DEG C, 160 DEG C, 165 DEG C, 170 DEG C, 175 DEG C, 180 DEG C, 185 DEG C, 190 DEG C, 195 DEG C), groove weld 10 is formed during welding, postwelding is incubated the regular hour again, such as 6 ~ 8h, such as, can be 6.5h, 7h, 7.5h, then cool to room temperature, as for the concrete type of cooling, air cooling mode can be adopted, naturally cool.
After suitably changing according to actual needs, the fire door preferred embodiment shown in Fig. 1 can be used as various types of continuous-type furnace fire door.
To sum up, fire door provided by the invention is monolithic construction, adopts heat-resistance stainless steel Cr28Ni48 material, heat-resisting, not easily scaling loss, intensity are high, can greatly reduce fire door consumption.Test shows, applies traditional fire door, and the moon consumes two pairs, fire door, is worth 5000 yuan, changes the once 30 minutes time used.Apply fire door provided by the invention, reach 3 years average life, year reduces spare parts consumption more than 60,000 yuan; Meanwhile, save the replacing fire door time, improve production efficiency, reduce the labour intensity of workman.In addition, the present invention can also avoid water-cooling furnace door owing to leaking on the impact of continuous-type furnace.
As known by the technical knowledge, the present invention can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (5)
1. a continuous-type furnace fire door, comprises stove door plant and hanger, and described stove door plant is installed on the stove gate of continuous-type furnace by described hanger, it is characterized in that,
Described stove door plant is an overall structure of casting in advance, and described stove door plant and described hanger are heat-resistance stainless steel Cr28Ni48 material, and a part for described hanger is by being fixedly welded on described stove door plant;
Described hanger is adjacent in pairs and is arranged in parallel; Described stove door plant is symmetrically arranged with two pairs of hangers, one end of described hanger is provided with earhole;
Described fire door also comprises the reinforcement gusset for increasing bonding strength between described stove door plant and often pair of described hanger, and described reinforcement gusset is all connected by welding with described stove door plant, adjacent often pair described hanger;
Described fire door also comprises bearing pin, and described bearing pin passes the earhole of often pair of adjacent described hanger, so that described stove door plant is installed to described stove gate.
2. continuous-type furnace fire door according to claim 1, is characterized in that,
The weld of described stove door plant and described hanger has groove, and the weld seam between described stove door plant and described hanger is groove weld.
3. a continuous-type furnace, comprises fire door, it is characterized in that,
Described fire door is the arbitrary described continuous-type furnace fire door of claim 1-2.
4. the manufacture method of continuous-type furnace fire door described in claim 1, is characterized in that, comprises following operating procedure successively:
Step one, polishes level and smooth by the welding position of the stove door plant cast in advance and hanger respectively;
Step 2, after stove door plant step one obtained and hanger are heated to predetermined temperature, reinforcement gusset is being placed between hanger described in a pair, continuous welding is carried out with special welding rod, so that described reinforcement gusset and described stove door plant and described hanger are welded together, under described predetermined temperature, be incubated the scheduled time after welding, then cooling obtains described continuous-type furnace fire door
Described welding rod is A407 welding rod,
Described predetermined temperature is 150 ~ 175 DEG C,
The described scheduled time is 6 ~ 8h.
5. manufacture method according to claim 4, is characterized in that,
In described step one, be also included in the sub-step that groove is offered in described welding position.
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| CN201310014244.0A CN103017539B (en) | 2013-01-15 | 2013-01-15 | The manufacture method of continuous-type furnace and fire door and this fire door |
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| CN201310014244.0A CN103017539B (en) | 2013-01-15 | 2013-01-15 | The manufacture method of continuous-type furnace and fire door and this fire door |
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| CN103017539A CN103017539A (en) | 2013-04-03 |
| CN103017539B true CN103017539B (en) | 2016-01-20 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107312A (en) * | 2011-01-13 | 2011-06-29 | 安徽跨宇钢结构网架工程有限公司 | Butt welding and T-shaped welding construction method for thick steel plate in normal temperature state |
| CN202337633U (en) * | 2011-11-09 | 2012-07-18 | 中国一冶集团有限公司 | Lifting appliance for furnace door |
| CN102607276A (en) * | 2012-04-01 | 2012-07-25 | 中冶南方(武汉)威仕工业炉有限公司 | Furnace door lifting lug device and lifting method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3039808A1 (en) * | 1980-10-22 | 1982-05-19 | Carl Dan. Peddinghaus Gmbh & Co Kg, 5828 Ennepetal | Industrial furnace door with lifting eyes - has frame formed by steel strip in peripheral groove in firebrick |
| CN101301714B (en) * | 2008-06-17 | 2010-08-11 | 南京工业大学 | Stainless steel plate fin type heat exchanger core body high-temperature brazing jig and manufacturing process thereof |
| CN102009256B (en) * | 2010-12-01 | 2012-12-26 | 武昌船舶重工有限责任公司 | Butt welding process for high strength steel for ship structure |
| CN202304426U (en) * | 2011-09-24 | 2012-07-04 | 天津市金桥焊材集团有限公司 | Furnace door device of tunnel baking furnace |
| CN102618716B (en) * | 2012-04-18 | 2013-04-17 | 武汉钢铁(集团)公司 | High-temperature furnace roller for CSP (Compact Strip Production) heating furnace |
| CN203037078U (en) * | 2013-01-15 | 2013-07-03 | 湖北新冶钢有限公司 | Continuous heating furnace and furnace door thereof |
-
2013
- 2013-01-15 CN CN201310014244.0A patent/CN103017539B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107312A (en) * | 2011-01-13 | 2011-06-29 | 安徽跨宇钢结构网架工程有限公司 | Butt welding and T-shaped welding construction method for thick steel plate in normal temperature state |
| CN202337633U (en) * | 2011-11-09 | 2012-07-18 | 中国一冶集团有限公司 | Lifting appliance for furnace door |
| CN102607276A (en) * | 2012-04-01 | 2012-07-25 | 中冶南方(武汉)威仕工业炉有限公司 | Furnace door lifting lug device and lifting method |
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Effective date of registration: 20171227 Address after: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Patentee after: Hubei Xinyegang Special Steel Tube Co., Ltd. Address before: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Patentee before: Hubei Xinyegang Steel Co., Ltd. |
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Address after: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Patentee after: Daye Special Steel Co., Ltd Address before: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Patentee before: Hubei Xinyegang Special Steel Tube Co., Ltd. |