CN105063336A - Inner furnace door mechanism of arched heat treatment gas furnace - Google Patents
Inner furnace door mechanism of arched heat treatment gas furnace Download PDFInfo
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- CN105063336A CN105063336A CN201510508579.7A CN201510508579A CN105063336A CN 105063336 A CN105063336 A CN 105063336A CN 201510508579 A CN201510508579 A CN 201510508579A CN 105063336 A CN105063336 A CN 105063336A
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- fire door
- gas furnace
- steel wire
- guide wheel
- ratchet mechanism
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Abstract
The invention discloses an inner furnace door mechanism of an arched heat treatment gas furnace. The inner furnace door mechanism is characterized in that the mechanism comprises an inner furnace door, a guide wheel support, a reversing guide wheel and a ratchet mechanism; the inner furnace door is arranged in a reducing atmosphere area 1 m away from the front of a steel wire quenching outlet in the gas furnace, and a steel wire channel is formed in the threading direction of steel wires; the guide wheel support is arranged on the top of the gas furnace, the reversing guide wheel is arranged on the guide wheel support, and the ratchet mechanism is arranged on one side of the outside of the gas furnace; the inner furnace door, the reversing guide wheel and the ratchet mechanism are communicated through a steel wire rope. The inner furnace door mechanism is simple in structure and convenient to operate. Due to the fact that the inner furnace door is arranged in the gas furnace, communication of the two ends of a hearth can be effectively cut off, the physical barrier action can be generated, the stability of the atmosphere of the inside of the gas furnace is guaranteed to the greatest degree, and the influence on other steel wires is made to be minimal.
Description
Technical field
The present invention relates to a kind of arch thermal treatment gas furnace, particularly relate to a kind of interior door structure mechanism of arch thermal treatment gas furnace, belong to thermal treatment unit technical field.
Background technology
The arch thermal treatment gas furnace used in current row is inner straight, and two ends stove door switch is closed.In use exist and cause furnace atmosphere, air pressure fluctuation when two ends oven door opening can form " wearing thorax wind "; According to existing gas furnace Steel Wire Heat Treatment principle, desirable annealing or austenite steel wire, without Decarburized layer or peroxidation.Common practices: according to the sector number of stove, regulates the combustion gases in the 1st district to make the atmosphere after burning have slight oxidation; The soap shape thing that Steel Wire Surface can be made residual is removed.2nd district keeps neutral burning, and the 3rd, 4th district are adjusted to reservation gas excessive a little, produce the reducing atmosphere favourable to steel wire.When stove so regulates or turnout does not fall to the situation of normal level, combustion line as shown in Figure 1 can be obtained.
Curve shown in Fig. 1 shows: the stable region (reaching a certain temperature) that can be relatively grown, this section is commonly called heat preservation zone, (maintenance specified temp).
Therefore the stable of furnace atmosphere must be ensured in fire door outlet section heat preservation zone.Furnace atmosphere is on the impact of steel wire decarburization: in heat-processed, and due to fuel composition, combustion conditions and temperature are different, to make in products of combustion, containing different gas, thus to form different furnace atmospheres, and oxidizing also have reductibility.They are different to the effect of steel, and oxidizing atmosphere causes oxidation and the decarburization of steel, and the medium that wherein decarburization capacity is the strongest is H
2o(vapour), be secondly CO
2with O
2, be finally H
2; Some atmosphere then makes steel carburetting, as CO and CH
4.Furnace air coefficient of excess α size also has important impact to decarburization: when α is too small, in products of combustion, occur H
2, the decarbonization rate in the hydrogen of humidity increases along with the increase of water content.Therefore, heat in coal gas scale-free heating furnace, when containing H in furnace gas
2when O is more, also decarburization will be caused; When α is excessive, because the oxide skin formed is many, hampers Carbon diffusion, therefore the degree of depth of Decarburized layer can be reduced.When heating in neutral medium, decarburization can be made minimum.Steel wire decarburization in fact namely the carbon atom of Steel Wire Surface burnt, the ferrite on surface will increase, and the hardness on surface will decline, so will cause the overproof and fracture of wire of steel wire in drawing process, therefore fire door is not frequent opens, and protects the steel wire hanging some amount in stove.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide that a kind of structure is simple, fire door mechanism in the arch thermal treatment gas furnace that effectively can solve the drawback brought in door opened process.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
Fire door mechanism in a kind of arch thermal treatment gas furnace, it is characterized in that, comprise interior fire door, wheel bracket, commutation lead and ratchet mechanism, described interior fire door is arranged at the reducing atmosphere district at 1m place before quenching steel wire outlet in gas furnace, and steel wire passage is formed on the threading direction of steel wire, described wheel bracket is arranged on the top of gas furnace, commutation guide wheel is arranged on wheel bracket, described ratchet mechanism is then arranged on the outside side of gas furnace, described interior fire door, commutation guide wheel with ratchet mechanism be communicated with by a wireline.
Further, described interior fire door is that lock formula promotes fire door, and the stroke of described gas furnace inner brake formula lifting fire door is also provided with Lu Nei gate mechanism.
The fire door of described interior fire door is also provided with fire door heat insulation layer.
And described ratchet mechanism is manual ratchet mechanism.
Usefulness of the present invention is: structure of the present invention is simple, easy to operate, by arranging interior fire door in gas furnace, effectively can cut off burner hearth two ends communications and liaison, producing physical barrier effect, at utmost ensure that the stable of combustion gas furnace atmosphere, will drop to minimum on the impact of other steel wires.
Accompanying drawing explanation
Fig. 1 is combustion line schematic diagram of the present invention;
Fig. 2 is the structural representation of one embodiment of the invention.
The implication of Main Reference Numerals in figure:
1, manual ratchet mechanism 2, wireline 3, wheel bracket 4, commutation guide wheel
5, lock formula promotes fire door 6, Lu Nei gate mechanism 7, fire door heat insulation layer.
Embodiment
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the present invention.
Fig. 2 is the structural representation of one embodiment of the invention.
As shown in Figure 2: fire door mechanism in arch thermal treatment gas furnace, comprise interior fire door, wheel bracket 3, commutation guide wheel 4 and manual ratchet mechanism 1, described interior fire door is that lock formula promotes fire door 5, be arranged at the reducing atmosphere district at 1m place before quenching steel wire outlet in gas furnace, and accordingly, the stroke of gas furnace inner brake formula lifting fire door 5 is also provided with Lu Nei gate mechanism 6, lock formula promotes fire door 5 and cooperatively interacts with Lu Nei gate mechanism 6, and steel wire passage is also formed on the threading direction of steel wire, described wheel bracket 3 is arranged on the top of gas furnace, commutation guide wheel 4 is arranged on wheel bracket 3, described Lu Nei gate mechanism 6 is then arranged on the outside side of gas furnace, described lock formula promotes fire door 5, commutation guide wheel 4 with Lu Nei gate mechanism 6 be communicated with by a wireline 2, the top being specially lock formula lifting fire door 5 connects a wireline 2, described wireline 2 walk around commutation guide wheel 4 commutate after around the home on manual ratchet mechanism 1.Open and close lock formula by operation manual ratchet mechanism 1 and promote fire door 5.In addition, in order to ensure thermal effectiveness further, the fire door promoting fire door 5 in lock formula is also provided with fire door heat insulation layer 7.
In the present embodiment, lock formula lifting fire door 5 being installed on front about the 1m combustion atmosphere of quenching outlet is reducing atmosphere district (as arrows place in Fig. 2).Namely its effect produces physical barrier and makes not allow oxygen permeate: can retain at the gas of forefoot area, then separate between oxide regions and neutral region.Heat preservation zone is stablized, and the carbide of steel wire remnants dissolves completely, and austenite obtains homogenizing; This period is very necessary to obtaining desirable austenite, is transferring δ phase to, cementite (Fe by α phase
3c) dissolve completely at grain edge;
When production line just starts driving, lock formula promotes fire door 5 and opens, and is convenient to steel wire and wears stove; Promote fire door 5 in normal production status time gating formula and be in closing condition, only stay steel wire passage area; Add steel wire radical in production process when needing to open fire door operation, lock formula promotes fire door 5 and cuts off burner hearth two ends communications and liaison, at utmost ensure that the stable of furnace atmosphere, will drop to minimum on the impact of other steel wires.
More than show and describe ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the present invention in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection scope of the present invention.
Claims (4)
1. fire door mechanism in an arch thermal treatment gas furnace, it is characterized in that, comprise interior fire door, wheel bracket, commutation lead and ratchet mechanism, described interior fire door is arranged at the reducing atmosphere district at 1m place before quenching steel wire outlet in gas furnace, and steel wire passage is formed on the threading direction of steel wire, described wheel bracket is arranged on the top of gas furnace, commutation guide wheel is arranged on wheel bracket, described ratchet mechanism is then arranged on the outside side of gas furnace, described interior fire door, commutation guide wheel with ratchet mechanism be communicated with by a wireline.
2. fire door mechanism in a kind of arch thermal treatment gas furnace according to claim 1, is characterized in that, described interior fire door is that lock formula promotes fire door, and the stroke of described gas furnace inner brake formula lifting fire door is also provided with Lu Nei gate mechanism.
3. fire door mechanism in a kind of arch thermal treatment gas furnace according to claim 1, it is characterized in that, the fire door of described interior fire door is also provided with fire door heat insulation layer.
4. fire door mechanism in a kind of arch thermal treatment gas furnace according to claim 1, it is characterized in that, described ratchet mechanism is manual ratchet mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508579.7A CN105063336A (en) | 2015-08-19 | 2015-08-19 | Inner furnace door mechanism of arched heat treatment gas furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508579.7A CN105063336A (en) | 2015-08-19 | 2015-08-19 | Inner furnace door mechanism of arched heat treatment gas furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105063336A true CN105063336A (en) | 2015-11-18 |
Family
ID=54492839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510508579.7A Pending CN105063336A (en) | 2015-08-19 | 2015-08-19 | Inner furnace door mechanism of arched heat treatment gas furnace |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201106993Y (en) * | 2007-07-25 | 2008-08-27 | 曾宪泉 | Double door mechanism of aluminum bar heating furnace stick-feeding mouth |
| JP2011080006A (en) * | 2009-10-09 | 2011-04-21 | Nippon Steel Corp | Gas gate valve inside high temperature furnace |
| CN204401070U (en) * | 2014-12-19 | 2015-06-17 | 张家港市东航机械有限公司 | Steel wire heating quenching device |
| CN204898021U (en) * | 2015-08-19 | 2015-12-23 | 江苏兴达钢帘线股份有限公司 | Furnace gate mechanism in arch thermal treatment gas furnace |
-
2015
- 2015-08-19 CN CN201510508579.7A patent/CN105063336A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201106993Y (en) * | 2007-07-25 | 2008-08-27 | 曾宪泉 | Double door mechanism of aluminum bar heating furnace stick-feeding mouth |
| JP2011080006A (en) * | 2009-10-09 | 2011-04-21 | Nippon Steel Corp | Gas gate valve inside high temperature furnace |
| CN204401070U (en) * | 2014-12-19 | 2015-06-17 | 张家港市东航机械有限公司 | Steel wire heating quenching device |
| CN204898021U (en) * | 2015-08-19 | 2015-12-23 | 江苏兴达钢帘线股份有限公司 | Furnace gate mechanism in arch thermal treatment gas furnace |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |