CN201436304U - A Heat Treatment Furnace - Google Patents
A Heat Treatment Furnace Download PDFInfo
- Publication number
- CN201436304U CN201436304U CN2009200750464U CN200920075046U CN201436304U CN 201436304 U CN201436304 U CN 201436304U CN 2009200750464 U CN2009200750464 U CN 2009200750464U CN 200920075046 U CN200920075046 U CN 200920075046U CN 201436304 U CN201436304 U CN 201436304U
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- Prior art keywords
- furnace
- drop
- heat treatment
- bottom board
- supporting seat
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Abstract
The utility model describes a heat treatment furnace, comprising an internal cover of the furnace, a furnace platform, a bottom board of the furnace, and a supporting seat for the bottom board of the furnace. the internal cover of the furnace is covered on the furnace platform, a bottom board of the furnace is provided on the supporting seat, a plurality of convection slots are spacedly provided on the lower surface of the bottom board of the furnace. compared with the prior art, the utility model has beneficial effect is that the convective slot performs convective heat transfer in order to accelerate the heat transfer. a carbon steel bottom board of the furnace with convective slot is used substitution of furnace bottom boards in heat resistant steel or heat resistant alloy in the prior art, a supporting seat in flame retardant material is used in substitution of heat resistant steel cylindrical support in the prior art. the utility model is capable of evidently improving heat conduction contact surface of workpiece, improving temperature uniformity and heating efficiency in the furnace. cost of material can be greatly reduced and energy can be greatly saved by using carbon steel bottom board of the furnace, and life of the furnace bottom board is prolonged.
Description
Technical field
The utility model relates to heat treatment furnace, especially a kind of bell furnace or ring furnace, specifically the supporting seat of this stove adopts refractory materials, and drop-bottom adopts carbon steel material, be processed with the groove of band convection current on drop-bottom, the carbon steel drop-bottom directly places on the supporting seat of refractory materials.
Background technology
In the metallurgical and mechanical industry, existing metallic substance heat treatment furnace can be divided into resistance heading furnace, gas-fired heater, infrared heating furnace, induction heater etc. according to its heating means, can be divided into low temperature oven, moderate oven and High Temperature Furnaces Heating Apparatus according to its use temperature, can realize that thermal treatment process has quenching, normalizing, annealing, tempering, decarburization, carburizing, nitriding (nitrogenize), carbonitriding etc.
In thermal treatment, use metal furnaces base plate or chassis in the gentle High Temperature Furnaces Heating Apparatus usually; can be used to carry workpiece, coil of strip etc. on the one hand; can be used for conducting heat on the other hand; usually be connected with shielding gas or function gaseous media in the stove simultaneously; in order to avoid generation oxidation; to reach the thermal treatment process purpose, gas flow also can play the transmission of heat by convection effect simultaneously.As shown in Figure 1, existing bell furnace or ring furnace comprise inner cover 1, workpiece (coil of strip) 2, high temperature steel furnace hearth plate (or plate) 3, high temperature steel cylindrical support seat 4.Workpiece 2 is annealed, and the requirement heat transfer is fast and temperature is even, normally high temperature steel cylindrical support seat 4 is positioned on the table, place high temperature steel furnace hearth plate 3 on it, workpiece 2 is positioned on the high temperature steel furnace hearth plate 3 then, and inner cover 1 on the cover, inner cover inserts in the sealing sand, feeds nitrogen N from the table bottom
2, N
2With hydrogen H
2Gas mixture, hydrogen H
2Deng shielding gas.The diameter of high temperature steel cylindrical support seat 4 is much smaller than high temperature steel furnace hearth plate 3 diameters, and its main purpose is that heat passes to workpiece 2 lower surfaces by high temperature steel furnace hearth plate 3 workpiece 2 is heated evenly.But high temperature steel furnace hearth plate 3 bears workpiece 2 weight and deforms, ftractures under comparatively high temps; distortion can re-use high temperature steel furnace hearth plate 3 turn-overs when big usually; or remove crushed element with machining process, thus crack propagation is very fast, and 3 work-ing lifes of high temperature steel furnace hearth plate are about 1 year.
The king holds people such as good fortune and has proposed two kinds of heat resisting ferro alloy which stands high temps and high-temperature heat-resisting steel of manganese nitrogen in 1985 in the Chinese patent application numbers 85102472 and 85102469.The heat treatment tank type heating-furnace base plate that can be used for having relatively high expectations, for the austenitic matrix casting forms, heatproof reaches more than 950 ℃.
The yellow generation people proposed a kind of 1200 ℃ of stove austenite heat-resistance cast steels in the Chinese patent application numbers 86100591 in 1986, were used for the heat treatment furnace drop-bottom, and used these high temperature steel all contain more chromium and nickel, cost an arm and a leg.
The Chen Zi peace waited the people to propose compound drop-bottom in 1996 among the Chinese patent publication number CN2290828, and promptly the drop-bottom main part is the Normal Steel Casting material, and composite portion is the metallic substance of heat-and corrosion-resistant, to reduce material cost.
The Yin Dynasty increases people such as natural pond and has reported in 1998 under the high temperature that round kiln base plate work-ing life only is about 1 year among the Chinese patent publication number CN2327696, disperses crackle to concentrate, slow down its expansion by changing over plum blossom shape, reaches the purpose that prolongs its work-ing life.
People such as Ying Hong proposed to add backing plate and avoids crackle to quality influence among the Chinese patent publication number CN2394174 on drop-bottom in 1999, prolonged drop-bottom work-ing life.
In sum, find by literature search that the whole or part of the material of the drop-bottom (dish) that use temperature is higher is high temperature steel or refractory alloy.Drop-bottom in the heat treatment furnace (dish) adopts the high temperature steel manufacturing, the raw materials cost height, and work-ing life is shorter, thereby makes production cost higher.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of heat treatment furnace is provided, and can improve temperature homogeneity and thermo-efficiency in the stove, can reduce manufacturing cost and save energy significantly, improves work-ing life.
Design of the present utility model is: in heat treated bell furnace or ring furnace, refractory brick is directly built on table, made with refractory materials and make supporting form, directly place carbon steel drop-bottom or the dish of band to chute on refractory materials.Drop-bottom or dish are gone up the groove that adopts the band convection current, can increase convection current heat conduction, adopt carbon steel to make drop-bottom or dish, and deflection is little, does not more produce cracking.Make drop-bottom or coil its price lower than high temperature steel furnace hearth plate with carbon steel, and long service life is made with use cost lowlyer, can replace high temperature steel drop-bottom or dish.
In order to achieve the above object, the present invention can be achieved through the following technical solutions: a kind of heat treatment furnace, comprise inner cover in the stove, table, drop-bottom and drop-bottom supporting seat, the lower surface of described drop-bottom be provided with some intervals to chute.
Preferably, described drop-bottom is shaped as rectangular slab or disc-shaped plate.
Preferably, the material of described drop-bottom is a carbon steel.
Preferably, described convection current groove shape be rectangular slot, one or more the combination in trapezoidal, circular, fan-shaped.
Preferably, described drop-bottom supporting seat is a refractory brick, and refractory brick is directly built on table.
Preferably, described drop-bottom supporting seat comprises some feets and a bearing surface that places on the feet.
Preferably, described heat treatment furnace is bell furnace or ring furnace.
The utility model makes it compared with prior art owing to adopted above technical scheme, has the following advantages and positively effect:
Substituted existing high temperature steel or refractory alloy drop-bottom, substituted existing high temperature steel cylindrical support seat with the carbon steel drop-bottom of band with the refractory materials supporting seat to chute.Employing with transmission of heat by convection, is accelerated the heat conduction to chute.Workpiece heat transfer contact face be can obviously improve, temperature homogeneity and thermo-efficiency in the stove improved.Adopt the carbon steel drop-bottom can reduce material cost and save energy significantly, and prolonged the work-ing life of drop-bottom.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.
In the accompanying drawings:
Fig. 1 is existing thermal treatment bell furnace structural representation;
Fig. 2 is thermal treatment bell furnace of the present utility model or ring furnace structural representation;
Fig. 3 is round kiln of the present utility model chassis and refractory materials supporting seat synoptic diagram;
Fig. 4 is A-A, the B-B of Fig. 3, the sectional view of C-C;
Fig. 5 is galley base plate of the present utility model and refractory materials supporting seat synoptic diagram;
Fig. 6 is the sectional view of the D-D of Fig. 5;
Fig. 7 is Fig. 5 enlarged view.
Drawing reference numeral:
Band to the carbon steel drop-bottom 5 of chute, disc furnace hearth plate to chute 5-1, refractory brick supporting seat 6, circular refractory brick upper support seat 6-1, circular refractory brick lower support seat 6-2, rectangle refractory brick supporting seat 10, rectangle to chute 11.
Embodiment
Specifically introduce a kind of preferred embodiment of the present utility model below in conjunction with accompanying drawing.Present embodiment is used for bell furnace or ring furnace.
As shown in Figure 2, be thermal treatment bell furnace of the present utility model or ring furnace structural representation; The structure of stove comprises inner cover 1 in the stove, workpiece (coil of strip) 2, high temperature steel drop-bottom 3, is with carbon steel drop-bottom 5, refractory brick supporting seat 6 to chute.Refractory brick is directly built on table, drop-bottom be shaped as disc, the material of drop-bottom is a carbon steel, is processed with on the drop-bottom chute, the material of supporting seat 6 is a refractory materials, and drop-bottom supporting seat 6 comprises some feets and a bearing surface that places on the feet.The bearing surface diameter is suitable to carbon steel drop-bottom 5 diameters of chute with band, places carbon steel drop-bottom 5 (see figure 3)s of band to chute on it, and vertical workpiece 2 is placed on the carbon steel drop-bottom 5 of band to chute.
As shown in Figure 3, Figure 4, the top of this refractory brick supporting seat 6 is circular real core plane 6-1 (seeing B-B among Fig. 4), and the bottom is circular alternate form 6-2 (seeing C-C among Fig. 4).Refractory brick supporting seat 6 tops are drop-bottom 5, and the upper surface of drop-bottom 5 is circular real core plane, lower surface be disk at interval to chute 5-1 (seeing A-A among Fig. 4).The convection current groove shape is circular, fan-shaped one or more combination, and this routine convection current groove shape be circle and fan-shaped combination.
As Fig. 5, Fig. 6 and shown in Figure 7, be galley base plate of the present utility model and refractory materials supporting seat synoptic diagram; Rectangle refractory brick supporting seat 10 is the rectangle alternate form.The upper surface of galley base plate is shaped as real core plane, lower surface chute 11 is shaped as at interval shape (seeing D-D among Fig. 5).
Lay thermopair and carry out temperature survey in the same distance of distance coil of strip lower surface, the result shows that band only hangs down about 15 ℃ than high temperature steel furnace hearth plate to the carbon steel furnace hearth plate measured temperature of chute, can satisfy bell furnace or ring furnace annealing production requirement.Its price is a high temperature steel furnace hearth plate 1/10 even lower only, and manufacturing cost is lower, long service life, and therefore, band has convection current heat conductivility preferably to the drop-bottom of chute.
Because it is 6 suitable to carbon steel furnace hearth plate 5 diameters of chute with band that refractory materials supports, vertical workpiece 2 weight directly are carried on refractory materials by carbon steel furnace hearth plate 5 and support on 6, and therefore that the carbon steel furnace bottom 5 of chute is produced deflections is very little for band, does not more produce cracking.Even as occur when rough and uneven in surface, available machining process removes and uses repeatedly.
Should be noted that at last: above embodiment only is not intended to limit in order to the explanation the technical solution of the utility model; Although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (7)
1. heat treatment furnace comprises: inner cover, table, drop-bottom and drop-bottom supporting seat in the stove is characterized in that: the lower surface of described drop-bottom be provided with some intervals to chute.
2. heat treatment furnace as claimed in claim 1 is characterized in that: described drop-bottom is shaped as rectangular slab or disc-shaped plate.
3. heat treatment furnace as claimed in claim 2 is characterized in that: the material of described drop-bottom is a carbon steel.
4. heat treatment furnace as claimed in claim 3 is characterized in that: described convection current groove shape is rectangular slot, one or more the combination in trapezoidal, circular, fan-shaped.
5. as any described heat treatment furnace of claim 1-4, it is characterized in that: described drop-bottom supporting seat is a refractory brick, and refractory brick is directly built on table.
6. heat treatment furnace as claimed in claim 5 is characterized in that: described drop-bottom supporting seat comprises some feets and a bearing surface that places on the feet.
7. heat treatment furnace as claimed in claim 6 is characterized in that: described heat treatment furnace is bell furnace or ring furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200750464U CN201436304U (en) | 2009-07-22 | 2009-07-22 | A Heat Treatment Furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200750464U CN201436304U (en) | 2009-07-22 | 2009-07-22 | A Heat Treatment Furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201436304U true CN201436304U (en) | 2010-04-07 |
Family
ID=42372759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200750464U Expired - Lifetime CN201436304U (en) | 2009-07-22 | 2009-07-22 | A Heat Treatment Furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201436304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243018A (en) * | 2011-06-20 | 2011-11-16 | 江苏华东炉业有限公司 | Bell-type movable full fiber resistance furnace |
| CN109321722A (en) * | 2018-10-09 | 2019-02-12 | 嘉兴中茂工业炉有限公司 | A kind of spheroidizing annealing furnace |
-
2009
- 2009-07-22 CN CN2009200750464U patent/CN201436304U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243018A (en) * | 2011-06-20 | 2011-11-16 | 江苏华东炉业有限公司 | Bell-type movable full fiber resistance furnace |
| CN109321722A (en) * | 2018-10-09 | 2019-02-12 | 嘉兴中茂工业炉有限公司 | A kind of spheroidizing annealing furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100407 |
|
| CX01 | Expiry of patent term |