CN103103316A - Progressive electric heating furnace - Google Patents

Progressive electric heating furnace Download PDF

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Publication number
CN103103316A
CN103103316A CN2013100398832A CN201310039883A CN103103316A CN 103103316 A CN103103316 A CN 103103316A CN 2013100398832 A CN2013100398832 A CN 2013100398832A CN 201310039883 A CN201310039883 A CN 201310039883A CN 103103316 A CN103103316 A CN 103103316A
Authority
CN
China
Prior art keywords
furnace
district
temperature
stove
burner hearth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2013100398832A
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Chinese (zh)
Inventor
魏建涛
喻家录
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUOYANG GANGFENG CASTING CO Ltd
Original Assignee
LUOYANG GANGFENG CASTING CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LUOYANG GANGFENG CASTING CO Ltd filed Critical LUOYANG GANGFENG CASTING CO Ltd
Priority to CN2013100398832A priority Critical patent/CN103103316A/en
Publication of CN103103316A publication Critical patent/CN103103316A/en
Pending legal-status Critical Current

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Abstract

The invention provides a progressive electric heating furnace, and relates to the field of heat treatment heating furnace. The heating furnace comprises a furnace body; a hearth of the furnace body is divided into six furnace sections along the axis direction, and the six furnace area sections are sequentially arranged; the section of the six furnace sections, close to the inlet of the hearth, is the first area, and the section close to the outlet of the hearth is the sixth section, wherein the furnace temperature in the first section is identified into 500-600 DEG C, the furnace temperature in the second section is identified into 600-700 DEG C, the furnace temperature in the third section is identified into 700-750 DEG C, the furnace temperature in the fourth section is identified into 750-800 DEG C, the furnace temperature in the fifth section is identified into 800-860 DEG C, and the furnace temperature in the sixth section is identified into 860 DEG C; and electric heaters for thermally processing metal parts are arranged on two sides and the bottom part of the furnace sections. The heating furnace is simple in structure and convenient to operate, and can be used for effectively reducing the energy consumption and improving the yield in hot treatment when in use.

Description

A kind of gradual electrical heater
[technical field]
The present invention relates to the heat treatment heating furnace field, especially relate to a kind of for heat treated gradual electrical heater with multistage body of heater.
[background technology]
Known, heat treatment heating furnace is a kind of stove and accessory for metal parts is heat-treated, now many employing electrically heated are carried out heat temperature raising to the burner hearth of process furnace, make the temperature in burner hearth meet the requirements of thermal treatment temp, thereby metal parts is heat-treated operation, with the mechanical property of corresponding raising metal parts; Yet, find in long-term practical application, what adopt when the thermal treatment due to existing electrical heating type process furnace is after with the uniform heat temperature raising of whole burner hearth entirely, just will need heat treated metal parts to be conveyed into and carry out normal heat treatment operation in burner hearth, namely not only the energy consumption of whole burner hearth is higher in this process, and the metal parts phenomenon that also easily deforms or ftracture because temperature variation is too fast when just entering burner hearth, therefore, it is higher that present thermal treatment electrical heater has production cost, the defective that the thermal treatment qualification rate is lower.
[summary of the invention]
In order to overcome the deficiency in background technology, the invention discloses a kind of gradual electrical heater, described process furnace is not only simple in structure, and is easy to operate, but also can effectively reduce energy consumption and improve the thermal treatment qualification rate in application.
For achieving the above object, the present invention adopts following technical scheme:
A kind of gradual electrical heater, described process furnace comprises the body of heater body; Described body of heater body comprises furnace shell and refractory insulating layer, and the burner hearth of body of heater body is divided into six sections stove districts that are arranged in order along axis direction; What advance fire door near burner hearth in described six sections stove districts is a district, near the burner hearth plug for outlet is 6th district, wherein, the furnace temperature in one district is made as 500~600 ℃, the furnace temperature in 2nd district is made as 600~700 ℃, and the furnace temperature in 3rd district is made as 700~750 ℃, and the furnace temperature in 4th district is made as 750~800 ℃, the furnace temperature in 5th district is made as 800~860 ℃, and the furnace temperature in 6th district is made as 860 ℃; Both sides and the bottom in described stove district are equipped with for the electric heater that metal parts is heat-treated.
Described gradual electrical heater, described furnace shell are the rectangle case structure, and furnace shell two ends are welded with furnace panel; Described furnace panel is equipped with the firedoor frame of gradient.
Described gradual electrical heater, described refractory insulating layer is made by resistant to elevated temperatures high purity ceramic fiber rock wool.
Described gradual electrical heater, described stove is equipped with temperature-control heat couple and overtemperature caution thermopair in the district.
Described gradual electrical heater, described burner hearth bottom is provided with groove, is placed with the brick of putting for the support well heater in groove.
Described gradual electrical heater, described groove notch is provided with the carbonated lime brick stove cover plate.
Described gradual electrical heater, the mouse cage type structure of described well heater for being made by the OCr25A15 B alloy wire.
Owing to adopting technical scheme as above, the present invention has following beneficial effect:
Gradual electrical heater of the present invention is simple in structure, easy to operate, described process furnace employing multi-stage oven district has realized that the progressive of temperature increases, thereby not only effectively reduce the energy consumption of whole burner hearth when using, but also effectively avoided the phenomenon of metal parts contingent distortion or cracking when just entering burner hearth, and then production efficiency and heat treated qualification rate have been improved accordingly.
[description of drawings]
Fig. 1 is schematic diagram of the present invention.
In figure: 1, furnace shell; 2, refractory insulating layer; 3, burner hearth; 4, advance fire door; 5, plug for outlet.
[embodiment]
Can explain in more detail the present invention by the following examples, disclose purpose of the present invention and be intended to protect all changes and improvements in the scope of the invention, the present invention is not limited to the following examples;
1 described gradual electrical heater by reference to the accompanying drawings, described process furnace comprises the body of heater body, described body of heater body comprises furnace shell 1 and refractory insulating layer 2, described furnace shell 1 is made as the rectangle case structure of being convenient to mark off six sections stove districts, simultaneously for ensureing resistance to air loss and the reliability of furnace shell 1 two ends fire door, is welded with furnace panel at furnace shell two ends, and the foundry furnace doorframe of constant slope is installed on furnace panel, for effectively improving the performance of fire resistant heat preserving, described refractory insulating layer 2 is made by resistant to elevated temperatures high purity ceramic fiber rock wool, the burner hearth 3 of described body of heater body marks off six sections stove districts that closely are connected that are arranged in order uniformly along burner hearth 3 axis directions, and what advance fire door near burner hearth in these six sections stove districts is a district, near burner hearth plug for outlet 5 is 6th district, wherein, the furnace temperature in one district is made as 500~600 ℃, the furnace temperature in 2nd district is made as 600~700 ℃, the furnace temperature in 3rd district is made as 700~750 ℃, the furnace temperature in 4th district is made as 750~800 ℃, the furnace temperature in 5th district is made as 800~860 ℃, the furnace temperature in 6th district is made as 860 ℃, be that described process furnace need not whole burner hearth all is heated to the highest temperature when heat treatment operation, thereby reached the purpose of effective reduction energy consumption, in addition, because the heat treated metal parts of needs is entered by a temperature lower district, this phenomenon with regard to effectively having avoided metal parts to deform or ftracture because temperature variation is too fast when just entering burner hearth, simultaneously, to be the preheating zone by front two sections stove districts due to six sections stove districts, middle two sections stove districts are the heating zone, staged temperature that last two sections stove districts are even hot-zone is divided and is arranged, be that metal parts is to enter stove to progressive heating until the such heat treatment process of structural transformation via low temperature, therefore, metal parts is homogeneous heating better, thereby effectively raises heat treated production efficiency and qualification rate,
The both sides in every section stove district in described process furnace and bottom are equipped with well heater, temperature-control heat couple and overtemperature caution thermopair, thereby when utilizing well heater to carry out homogeneous heating to metal parts, can also guarantee that effectively the temperature in every section stove district is normal by temperature-control heat couple and overtemperature caution thermopair; For reducing the energy consumption of whole burner hearth 3 in heat treatment operation, in described process furnace in every adjacent two sections stove districts the corresponding stove district temperature of advancing fire door 4 near burner hearth be made as temperature lower than its adjacent stove district, thereby make need heat treated metal parts in the heating stroke can by transporting mechanism at the uniform velocity by low temperature to high temperature transition gradually, and then effectively avoided the phenomenon of metal parts contingent distortion or cracking when just entering burner hearth 3; For ease of at the interior placement well heater of burner hearth 3, can be provided for card in the bottom of burner hearth 3 and put the groove of putting brick, the brick of putting that card is put in groove is used for the support well heater, namely utilizes the brick of putting that firmly is placed in groove to ensure that effectively the temperature of well heater can not be distributed to the outside by burner hearth 3 bottoms; In addition, can also lay the carbonated lime brick stove cover plate at the groove notch, namely utilize the carbonated lime brick stove cover plate to block the well heater upper side, thereby effectively avoided burner hearth 3 internal cause high temperature and the oxidation cast that produces contacts with well heater after dropping, cause the phenomenon generation of well heater short circuit; Change well heater for ease of quick-detachment, described process furnace has adopted the well heater of the mouse cage type structure of being made by the OCr25A15 B alloy wire, is the purpose of the well heater of replaceable single damage thereby reached in actual applications without blowing out.
Part not in the detailed description of the invention is prior art, therefore the present invention is not described in detail.

Claims (7)

1. gradual electrical heater, described process furnace comprises the body of heater body, it is characterized in that: described body of heater body comprises furnace shell (1) and refractory insulating layer (2), and the burner hearth of body of heater body (3) is divided into six sections stove districts that are arranged in order along axis direction; What advance fire door (4) near burner hearth (3) in described six sections stove districts is a district, near burner hearth (3) plug for outlet (5) in the stove district is 6th district, wherein, the furnace temperature in one district is made as 500~600 ℃, the furnace temperature in 2nd district is made as 600~700 ℃, and the furnace temperature in 3rd district is made as 700~750 ℃, and the furnace temperature in 4th district is made as 750~800 ℃, the furnace temperature in 5th district is made as 800~860 ℃, and the furnace temperature in 6th district is made as 860 ℃; Both sides and the bottom in described stove district are equipped with for the electric heater that metal parts is heat-treated.
2. gradual electrical heater according to claim 1, it is characterized in that: described furnace shell (1) is the rectangle case structure, furnace shell (1) two ends are welded with furnace panel; Described furnace panel is equipped with the firedoor frame of gradient.
3. gradual electrical heater according to claim 1, it is characterized in that: described refractory insulating layer (2) is made by resistant to elevated temperatures high purity ceramic fiber rock wool.
4. gradual electrical heater according to claim 1 is characterized in that: described stove is equipped with temperature-control heat couple and overtemperature caution thermopair in the district.
5. gradual electrical heater according to claim 1, is characterized in that: be provided with groove bottom described burner hearth (3), be placed with the brick of putting for the support well heater in groove.
6. gradual electrical heater according to claim 5, it is characterized in that: described groove notch is provided with the carbonated lime brick stove cover plate.
7. gradual electrical heater according to claim 1, is characterized in that: the mouse cage type structure of described well heater for being made by the OCr25A15 B alloy wire.
CN2013100398832A 2013-02-01 2013-02-01 Progressive electric heating furnace Pending CN103103316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013100398832A CN103103316A (en) 2013-02-01 2013-02-01 Progressive electric heating furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013100398832A CN103103316A (en) 2013-02-01 2013-02-01 Progressive electric heating furnace

Publications (1)

Publication Number Publication Date
CN103103316A true CN103103316A (en) 2013-05-15

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Family Applications (1)

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CN2013100398832A Pending CN103103316A (en) 2013-02-01 2013-02-01 Progressive electric heating furnace

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103695622A (en) * 2013-12-13 2014-04-02 武汉钢铁(集团)公司 Quenching and straightening process for ultrathin high-strength cutting tool
CN105886733A (en) * 2016-06-21 2016-08-24 洛阳市钢峰工程机械制造有限公司 Roller bottom type heat treatment production line

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040063058A1 (en) * 2002-09-26 2004-04-01 Btu International, Inc. Convection furnace thermal profile enhancement
CN200949111Y (en) * 2006-09-07 2007-09-19 章学良 Automatic metal heat treating apparatus
CN101105368A (en) * 2007-08-15 2008-01-16 苏州工业园区华福科技有限公司 Line-frequency induction gradient temperature heating oven
CN102401559A (en) * 2011-11-28 2012-04-04 安徽省宁国新宁实业有限公司 Automatic box-type heat treatment equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040063058A1 (en) * 2002-09-26 2004-04-01 Btu International, Inc. Convection furnace thermal profile enhancement
CN200949111Y (en) * 2006-09-07 2007-09-19 章学良 Automatic metal heat treating apparatus
CN101105368A (en) * 2007-08-15 2008-01-16 苏州工业园区华福科技有限公司 Line-frequency induction gradient temperature heating oven
CN102401559A (en) * 2011-11-28 2012-04-04 安徽省宁国新宁实业有限公司 Automatic box-type heat treatment equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103695622A (en) * 2013-12-13 2014-04-02 武汉钢铁(集团)公司 Quenching and straightening process for ultrathin high-strength cutting tool
CN103695622B (en) * 2013-12-13 2015-06-24 武汉钢铁(集团)公司 Quenching and straightening process for ultrathin high-strength cutting tool
CN105886733A (en) * 2016-06-21 2016-08-24 洛阳市钢峰工程机械制造有限公司 Roller bottom type heat treatment production line

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Application publication date: 20130515

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