CN202519307U - Double-layer sealing non-standard bell type furnace - Google Patents
Double-layer sealing non-standard bell type furnace Download PDFInfo
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- CN202519307U CN202519307U CN2012200886184U CN201220088618U CN202519307U CN 202519307 U CN202519307 U CN 202519307U CN 2012200886184 U CN2012200886184 U CN 2012200886184U CN 201220088618 U CN201220088618 U CN 201220088618U CN 202519307 U CN202519307 U CN 202519307U
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Abstract
The utility model belongs to the technical field of thermal treatment processing equipment, and relates to a non-standard thermal treatment bell type furnace with a double-layer sealing structure. The bell type furnace comprises a furnace base, a furnace bottom crossed supporting frame and a furnace bell, and is characterized in that a double-layer sealing ring is arranged between the furnace base and the furnace bell, an asbestos packing is at the inner layer, a silicon rubber ring is at the outer layer. A base heating element is distributed on the furnace base and provided with a corrugated cover plate in a covering manner; an air inlet is arranged on the side surface of the furnace base; a water cooling jacket is arranged between the furnace base and the furnace bell; and a convection fan and a U-shaped pressure meter are arranged at the top of the furnace bell, and a corrugated inner bell air guide barrel is arranged in the furnace bell. The double-layer sealing non-standard bell type furnace can achieve the requirement of a novel steel belt annealed on mechanical performance, is especially applicable to annealing of steel belts made from BSYE-N materials, and can be used for filling the blank of the steel belts in China, and breaking through the technical bottleneck for restricting the technology development. Compared with the traditional bell type furnace, the non-standard thermal treatment bell type furnace has the advantage that the production cost is greatly lowered.
Description
Technical field
The utility model belongs to the heat treatment process equipment technical field, and relating to is a kind of improved non-standard thermal treatment bell furnace with double-layer sealing structure.
Background technology
Anneal of material mainly contains two basic roles, and the one, eliminate the sclerosis and the unrelieved stress that produce in the course of processing, softener material improves plasticity, is convenient to further processing; The 2nd, the weave construction of change material obtains needed grain fineness number and grain orientation.Cover annealing is one of heat treated major technique of cold rolling steel, is about to a few coil materials and builds up buttress, carries out heat temperature raising after covering with protective guard, and the annealing temperature that reaches regulation is also cooled off after insulation again.
Single buttress formula or multiple-stack are adopted in general cover annealing, have piled up neatly protective guard on the steel back cover, feed protection gas; Cover is gone up heating mantles again, between heating mantles and protective guard, heats, through flowing the heat transferred steel of protection gas in the protective guard; Be incubated after being heated to the annealing temperature of requirement; Remove heating mantles then, cover is gone up cooling cowl again, with wind and/or be water-cooled to normal temperature.
The shortcoming that existing steel cover annealing exists is: bell furnace heating or cooling separately in the annealing process, heat can not recycles, caused the waste of the energy; Utilize heating mantles to steel indirect type heating in the protective guard, heat transfer efficiency is low, causes steel bonding easily; Frequently change cover, running cost is high, and labour intensity is big, poor stability.
At present, traditional bell furnace is general, and what adopt is the clean annealing that unprotect atmosphere or logical hydrogen carry out, but for the band steel board of type material, its annealing product technical requirements is very high.Such as the steel band of BSYE-N material, this band steel is a kind of starting material of wear-resisting pipe, and wear-resisting pipe is welded through rolling by high carbon steel, because the weldability of high carbon steel is very poor, thereby will carry out anneal to improve weldability to it.To surperficial specification of quality is to realize low or non oxidizing annealing requirement, but the requirement of product mechanical property is then required very high, and technical indicator reaches following requirement: 1) ys :≤300MPa; 2) tensile strength :≤300MPa; 3) elongation after fracture:>=25%; 4) steel Decarburized layer :≤0.08mm.
The existing standard bell furnace is generally the perhydro bell furnace, can make full use of the nitrogen atmosphere reductive action, make in the coil annealing process inside and outside temperature distribution more evenly, the surperficial cleaning more of coil of strip.Therefore the perhydro bell furnace has obtained very to use widely in industries such as iron and steel.But its use cost is too high, does not reach the production capacity requirement, and especially for the steel band of BSYE-N material, after carrying out annealing, its mechanical property does not reach requirement, can cracking after the product welding.
Summary of the invention
The problem that the utility model will solve is exactly to propose a kind of extraordinary bell furnace that can reach special material batch annealing conditional request, promptly improved non-standard bell furnace with double-layer sealing structure, thus reach the technical requirements of this product.
The main technical schemes of the utility model: the non-standard bell furnace of a kind of double-layer seal, comprise furnace base, furnace bottom cross resting support and bonnet, it is characterized in that the double-layer seal circle is arranged between furnace base and the bonnet.
Usually, said double-layer seal circle internal layer is an asbestos packing, and skin is a silicon rubber loop.
Also be distributed with the base heating unit on the furnace base of the utility model, be coated with corrugated deck on the heating unit; The furnace base side is provided with inlet mouth; Between furnace base and the bonnet water jacket is arranged; The bonnet top is provided with convection fan and U type tensimeter, and corrugated inner cover wind-guiding bucket is arranged in the bonnet.
Compare with traditional bell furnace, the characteristics of the utility model are following:
1. traditional bell furnace does not require the stopping property of bonnet, and furnace base of the utility model and bonnet time have been adopted asbestos packing and silicon rubber loop two seals, and furnace pressure has reached 2000Pa when making work.
2. do not have heating unit under the stove seat of traditional bell furnace, under the stove seat of the utility model heating unit is arranged.
3. the forced convection air supply motor of traditional bell furnace is under furnace base, and the forced convection air supply motor of the utility model is at the bonnet top.This design has improved the homogeneity of temperature in the stove greatly, has guaranteed the consistence of the upper and lower quality product in the stove.
4. the protection device of air that send of the utility model does not feed protection gas from traditional base bottom, but feeds nitrogen in bottom sides, after high-power fan stirs, has protected product to realize low or non oxidizing on the one hand, makes furnace temperature further even on the other hand.
5. the utility model can be widely used in the neck city that other bell furnace uses.
The improved non-standard bell furnace of the utility model; Can reach the requirement on the mechanical property of new steel belt annealing back; Be particularly useful for the steel band annealing of BSYE-N material, and filled up the blank of this steel band product of China, opened the technical bottleneck that restricts this top technological development.With adopt hydrogen shield property atmosphere to compare economy and security all improves a lot, contrast unshielded atmosphere and then realized the low or non oxidizing heating again.Compare with adopting traditional bell furnace, production cost reduces greatly.
Description of drawings
Figure below is the structural representation of the utility model bell furnace.
Among the figure, 1-furnace base; 2-heating unit; 3-corrugated deck; 4-double-layer seal circle; 5-water jacket; 6-furnace bottom cross resting support; 7-bonnet; 8-convection fan; 9-corrugated inner cover wind-guiding bucket; 10-U type tensimeter.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in detail.
Embodiment: the non-standard bell furnace structure of present embodiment double-layer seal is shown in accompanying drawing 1; Mainly comprise furnace base 1, furnace bottom cross resting support 6 and bonnet 7; It mainly improves is between furnace base 1 and the bonnet 7 double-layer seal circle 4 to be arranged; The internal layer of double-layer seal circle 4 is an asbestos packing, and skin is a silicon rubber loop.
Be distributed with base heating unit 2 on the furnace base 1 of present embodiment, be coated with corrugated deck 3 on the heating unit 2; Furnace base 1 side is provided with inlet mouth; Between furnace base 1 and the bonnet 7 water jacket 5 is arranged; Bonnet 7 tops are provided with convection fan 8 and U type tensimeter 10, and corrugated inner cover wind-guiding bucket 9 is arranged in the bonnet 7.
The tradition bell furnace does not require the stopping property of bonnet, and present embodiment has adopted asbestos packing and silicon rubber loop two seals between furnace base 1 and bonnet 7, and promptly the double-layer seal circle 4, and furnace pressure has reached 2000Pa when making work.
Do not have heating unit on the furnace base of tradition bell furnace, on the furnace base 1 of present embodiment heating unit 2 is arranged; The forced convection air supply motor of tradition bell furnace is under furnace base, and the forced convection air supply motor of present embodiment is at the bonnet top, and promptly convection fan 8.This design has improved the homogeneity of temperature in the stove greatly, has guaranteed the consistence of the upper and lower quality product in the stove.
The protection device of air that send of present embodiment bell furnace does not feed protection gas from traditional furnace base bottom; But in bottom sides; After high-power fan stirs; Feed nitrogen through furnace base 1 lateral inlet mouth, protected product to realize low or non oxidizing on the one hand, make furnace temperature further even on the other hand.
Claims (6)
1. the non-standard bell furnace of double-layer seal comprises furnace base, furnace bottom cross resting support and bonnet, and it is characterized in that has the double-layer seal circle between furnace base and the bonnet.
2. bell furnace as claimed in claim 1 is characterized in that double-layer seal circle internal layer is an asbestos packing, and skin is a silicon rubber loop.
3. bell furnace as claimed in claim 1 is characterized in that the furnace base side is provided with inlet mouth.
4. bell furnace as claimed in claim 1 is characterized in that between furnace base and the bonnet water jacket being arranged.
5. bell furnace as claimed in claim 1 is characterized in that the bonnet top is provided with convection fan and U type tensimeter, has corrugated inner cover wind-guiding bucket in the bonnet.
6. bell furnace as claimed in claim 1 is characterized in that being distributed with the base heating unit on the furnace base, is coated with corrugated deck on the heating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200886184U CN202519307U (en) | 2012-03-12 | 2012-03-12 | Double-layer sealing non-standard bell type furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200886184U CN202519307U (en) | 2012-03-12 | 2012-03-12 | Double-layer sealing non-standard bell type furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202519307U true CN202519307U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200886184U Expired - Fee Related CN202519307U (en) | 2012-03-12 | 2012-03-12 | Double-layer sealing non-standard bell type furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN202519307U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534180A (en) * | 2012-03-12 | 2012-07-04 | 溧阳市宏大机械设备有限公司 | Double-layer sealing non-standard cover furnace |
| CN103757184A (en) * | 2014-01-26 | 2014-04-30 | 万世泰金属工业（昆山）有限公司 | Vacuum electric annealing furnace |
| CN107674969A (en) * | 2017-10-25 | 2018-02-09 | 江苏广盛源科技发展有限公司 | A kind of compound annealing furnace |
-
2012
- 2012-03-12 CN CN2012200886184U patent/CN202519307U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534180A (en) * | 2012-03-12 | 2012-07-04 | 溧阳市宏大机械设备有限公司 | Double-layer sealing non-standard cover furnace |
| CN103757184A (en) * | 2014-01-26 | 2014-04-30 | 万世泰金属工业（昆山）有限公司 | Vacuum electric annealing furnace |
| CN107674969A (en) * | 2017-10-25 | 2018-02-09 | 江苏广盛源科技发展有限公司 | A kind of compound annealing furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150312 |
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| EXPY | Termination of patent right or utility model |