CN202485424U - Non-standard hood type furnace with intake air from side plane at bottom - Google Patents
Non-standard hood type furnace with intake air from side plane at bottom Download PDFInfo
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- CN202485424U CN202485424U CN2012200886201U CN201220088620U CN202485424U CN 202485424 U CN202485424 U CN 202485424U CN 2012200886201 U CN2012200886201 U CN 2012200886201U CN 201220088620 U CN201220088620 U CN 201220088620U CN 202485424 U CN202485424 U CN 202485424U
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Abstract
The utility model relates to an improved non-standard hood type furnace with intake air from the side plane at the bottom, belonging to the technical field of heat processing machining equipment. The improved non-standard hood type furnace comprises a furnace base, a hearth cross-shaped support frame and a furnace hood and is characterized in that an air inlet is arranged at the side plane of the furnace base; the furnace base is further provided with a base heating element; a corrugated covering plate covers on the heating element; double layers of sealing rings and water-cooling jackets are arranged between the furnace base and the furnace hood; a convection fan and a U-shaped pressure gauge are arranged on the top of the furnace hood; and a corrugated type inner hood air guide bucket is arranged inside the furnace hood. According to the improved non-standard hood type furnace, the requirements on mechanical performances after the steel strip is annealed are met; the improved non-standard hood type furnace is particularly applicable for steel strip annealing of BSYE-N materials; the blank in such steel strip product in China is filled; and the technical bottleneck which limits the development in such technology is overcome. Compared with the adoption of hydrogen protective atmosphere, the improved non-standard hood type furnace is improved both in economy and security; compared with the atmosphere without protection, heating with a little or without oxygen is realized; and compared with a traditional hood type furnace, the production cost is reduced greatly.
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 heat treatment bell furnace with bottom sides air intake.
Background technology
Anneal of material mainly contains two basic roles, and the one, eliminate the sclerosis and the residual stress that produce in the process, softener material improves plasticity, is convenient to further processing; The 2nd, the institutional framework of change material obtains needed grain size 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 cover, 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 cover on the steel back cover, feed protection gas; Cover is gone up heating mantles again, between heating mantles and protective cover, heats, through flowing the heat transferred steel of protection gas in the protective cover; Be incubated after being heated to the annealing temperature of requirement; Remove heating mantles then, cover is gone up cooling dome 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 cover, heat transfer efficiency is low, causes steel bonding easily; Frequently change cover, operating cost is high, and labour intensity is big, poor stability.
At present, traditional bell furnace is general, and what adopt is the bright annealing that unprotect atmosphere or logical hydrogen carry out, but for the band steel board of new material, its annealing product specification requirement is very high.Such as the steel band of BSYE-N material, this band steel is a kind of raw material of wear-resisting pipe, and wear-resisting pipe is welded through rolling by high-carbon steel, because the solderability of high-carbon steel is very poor, thereby will carry out annealing in process to improve solderability to it.To surperficial quality requirement is to realize low or non oxidizing annealing requirement, but the requirement of product mechanical performance is then required very high, and technical indicator reaches following requirement: 1) yield strength :≤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 reduction, 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 performance 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 bottom sides air intake, thus reach the specification requirement of this product.
The main technical schemes of the utility model: non-standard bell furnace is heated in a kind of bottom, comprises furnace base, furnace bottom cross bearing support and bonnet, it is characterized in that the furnace base side is provided with air inlet.
Usually, be distributed with the base heating element heater on the furnace base of the utility model, be coated with corrugated deck on the heating element heater; Double-layer seal circle, water collar are arranged between furnace base and the bonnet; The bonnet top is provided with convection fan and U type Pressure gauge, 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. 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.
2. 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 uniformity of temperature in the stove greatly, has guaranteed the uniformity of the upper and lower product quality in the stove.
3. traditional bell furnace does not require the seal of bonnet, has adopted asbestos packing and silicon rubber loop two seals between furnace base of the utility model and the bonnet, and furnace pressure has reached 2000Pa when making work.
4. do not have heating element heater under the stove seat of traditional bell furnace, under the stove seat of the utility model heating element heater is arranged.
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 performance 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
Fig. 1 is the structural representation of the utility model bell furnace.
Among the figure, 1-furnace base; 2-heating element heater; 3-corrugated deck; 4-double-layer seal circle; 5-water collar; 6-furnace bottom cross bearing support; 7-bonnet; 8-convection fan; 9-corrugated inner cover wind-guiding bucket; 10-U type Pressure gauge.
The specific 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 bottom sides air intake mainly comprises furnace base 1, furnace bottom cross bearing support 6 and bonnet 7 shown in accompanying drawing 1, and it mainly improves is that furnace base 1 side is provided with air inlet.
Be distributed with base heating element heater 2 on the furnace base 1 of present embodiment, be coated with corrugated deck 3 on the heating element heater 2; Double-layer seal circle 4, water collar 5 are arranged between furnace base 1 and the bonnet 7; Bonnet 7 tops are provided with convection fan 8 and U type Pressure gauge 10, and corrugated inner cover wind-guiding bucket 9 is arranged in the bonnet 7.
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; Air inlet through furnace base 1 side feeds nitrogen, has protected product to realize low or non oxidizing on the one hand, makes furnace temperature further even on the other hand.
Do not have heating element heater on the furnace base of tradition bell furnace, on the furnace base 1 of present embodiment heating element heater 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 uniformity of temperature in the stove greatly, has guaranteed the uniformity of the upper and lower product quality in the stove.
The tradition bell furnace does not require the seal 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.
Claims (4)
1. the non-standard bell furnace of bottom sides air intake comprises furnace base, furnace bottom cross bearing support and bonnet, it is characterized in that the furnace base side is provided with air inlet.
2. bell furnace as claimed in claim 1 is characterized in that being distributed with the base heating element heater on the furnace base, is coated with corrugated deck on the heating element heater.
3. bell furnace as claimed in claim 1 is characterized in that double-layer seal circle, water collar are arranged between furnace base and the bonnet.
4. bell furnace as claimed in claim 1 is characterized in that the bonnet top is provided with convection fan and U type Pressure gauge, has corrugated inner cover wind-guiding bucket in the bonnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200886201U CN202485424U (en) | 2012-03-12 | 2012-03-12 | Non-standard hood type furnace with intake air from side plane at bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200886201U CN202485424U (en) | 2012-03-12 | 2012-03-12 | Non-standard hood type furnace with intake air from side plane at bottom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485424U true CN202485424U (en) | 2012-10-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200886201U Expired - Fee Related CN202485424U (en) | 2012-03-12 | 2012-03-12 | Non-standard hood type furnace with intake air from side plane at bottom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202485424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586582A (en) * | 2012-03-12 | 2012-07-18 | 溧阳市宏大机械设备有限公司 | Bottom side air inlet type non-standard bell-type furnace |
-
2012
- 2012-03-12 CN CN2012200886201U patent/CN202485424U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586582A (en) * | 2012-03-12 | 2012-07-18 | 溧阳市宏大机械设备有限公司 | Bottom side air inlet type non-standard bell-type 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: 20121010 Termination date: 20150312 |
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| EXPY | Termination of patent right or utility model |