CN202482389U - Nonstandard cover type furnace with top forced convection structure - Google Patents
Nonstandard cover type furnace with top forced convection structure Download PDFInfo
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- CN202482389U CN202482389U CN2012200886057U CN201220088605U CN202482389U CN 202482389 U CN202482389 U CN 202482389U CN 2012200886057 U CN2012200886057 U CN 2012200886057U CN 201220088605 U CN201220088605 U CN 201220088605U CN 202482389 U CN202482389 U CN 202482389U
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Abstract
The utility model belongs to the technical field of heat treatment processing devices and relates to an improved nonstandard cover type furnace with a top forced convection structure. The improved nonstandard cover type furnace comprises a furnace base, a furnace base cross-shaped bearing frame and a furnace cover and is characterized in that a convection fan is arranged at the top of the furnace cover, and a corrugated inner cover air guiding barrel is arranged in the furnace cover. Base heating elements are further distributed on the furnace base, and a corrugated cover plate is covered on the heating elements. An air inlet is arranged on the lateral side of the furnace base. A double-layer seal ring and a water-cooling jacket are arranged between the furnace base and the furnace cover. A U-shaped pressure meter is arranged at the top of the furnace cover. The improved nonstandard cover type furnace can meet the requirement for mechanical performance of annealed novel steel belts, is especially suitable for steel belt annealing of BSYE-N materials, fills the blank of national steel belt products and opens the technical bottleneck restricting technology development. Compared with furnaces adopting hydrogen protective atmosphere, the economical efficiency and the safety are both improved greatly, and compared with furnaces adopting unprotected atmosphere, non-oxidation heating is achieved. Compared with traditional cover type furnaces, 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 thermal treatment bell furnace with top forced convection 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 top forced convection 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 top forced convection, comprise furnace base, furnace bottom cross resting support and bonnet, it is characterized in that the bonnet top is provided with convection fan, has corrugated inner cover wind-guiding bucket in the bonnet.
Usually, 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; Double-layer seal circle, water jacket are arranged between furnace base and the bonnet, and said double-layer seal circle internal layer is an asbestos packing, and skin is a silicon rubber loop; The bonnet top is provided with U type tensimeter.
Compare with traditional bell furnace, the characteristics of the utility model are following:
1. 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.
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. 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.
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: forced convection non-standard bell furnace structure in present embodiment top mainly comprises furnace base 1, furnace bottom cross resting support 6 and bonnet 7 shown in accompanying drawing 1, and it mainly improves is that bonnet 7 tops are provided with convection fan 8, and corrugated inner cover wind-guiding bucket 9 is arranged in the bonnet 7.
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 U type tensimeter 10; Between furnace base 1 and the bonnet 7 double-layer seal circle 4 is arranged, the internal layer of double-layer seal circle 4 is an asbestos packing, and skin is a silicon rubber loop.
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 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.
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 top forced convection comprises furnace base, furnace bottom cross resting support and bonnet, it is characterized in that the bonnet top is provided with convection fan, has corrugated inner cover wind-guiding bucket in the bonnet.
2. bell furnace as claimed in claim 1 is characterized in that the double-layer seal circle is arranged between furnace base and the bonnet.
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 U type tensimeter.
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 |
|---|---|---|---|
| CN2012200886057U CN202482389U (en) | 2012-03-12 | 2012-03-12 | Nonstandard cover type furnace with top forced convection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200886057U CN202482389U (en) | 2012-03-12 | 2012-03-12 | Nonstandard cover type furnace with top forced convection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202482389U true CN202482389U (en) | 2012-10-10 |
Family
ID=46956826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200886057U Expired - Fee Related CN202482389U (en) | 2012-03-12 | 2012-03-12 | Nonstandard cover type furnace with top forced convection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202482389U (en) |
-
2012
- 2012-03-12 CN CN2012200886057U patent/CN202482389U/en not_active Expired - Fee Related
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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 |