KR101867717B1 - Uniform annealing apparatus and uniform reduction apparatus - Google Patents

Uniform annealing apparatus and uniform reduction apparatus Download PDF

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Publication number
KR101867717B1
KR101867717B1 KR1020160169523A KR20160169523A KR101867717B1 KR 101867717 B1 KR101867717 B1 KR 101867717B1 KR 1020160169523 A KR1020160169523 A KR 1020160169523A KR 20160169523 A KR20160169523 A KR 20160169523A KR 101867717 B1 KR101867717 B1 KR 101867717B1
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KR
South Korea
Prior art keywords
heat treatment
groove
bent portion
conveyor
workpiece
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KR1020160169523A
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Korean (ko)
Inventor
김용찬
Original Assignee
주식회사 포스코
재단법인 포항산업과학연구원
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Priority to KR1020160169523A priority Critical patent/KR101867717B1/en
Application granted granted Critical
Publication of KR101867717B1 publication Critical patent/KR101867717B1/en

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/12—Travelling or movable supports or containers for the charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F27D2005/0081—Details

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Tunnel Furnaces (AREA)

Abstract

According to one embodiment of the present invention, provided is a uniform thermal processing apparatus, which can comprise: a furnace having a thermal processing space; a conveyor having a bent portion or a groove to form a space in which at least a portion of a material can be inserted and disposed to enable the material to enter the thermal processing space; and a supporter disposed to come in contact with the material by the conveyor in the thermal processing space.

Description

[0001] The present invention relates to a uniform annealing apparatus and a uniform reduction apparatus,

The present invention relates to a uniform heat treatment apparatus and a uniform reduction apparatus.

The material may be heat treated or reduced while entering the furnace through the conveyor. After the material has entered the furnace, the top of the material is directly exposed to heat or gas and is sufficiently heat treated or reduced, but the bottom of the material may not be sufficiently heat treated or reduced.

Conventionally, the amount of heat or gas in the furnace is increased, or the time for staying in the furnace is extended, so that the furnace is uniformly heat-treated or reduced, but this is inefficient in terms of economy and productivity.

Published Patent Application No. 10-2011-0058371

An embodiment of the present invention provides a uniform heat treatment apparatus and a uniform reduction apparatus capable of efficiently performing uniform heat treatment / reduction on a work.

A uniform heat treatment apparatus according to an embodiment of the present invention includes: a furnace having a heat treatment space; A conveyor having a bent portion or a groove so as to form a space into which at least a part of the material is inserted and the material being arranged to enter the heat treatment space; And a support disposed in contact with the workpiece by transfer of the conveyor in the heat treatment space such that at least a portion of the workpiece enters the bent portion or the groove or emerges from the bent portion or groove; . ≪ / RTI >

According to an embodiment of the present invention, there is provided a uniform reduction apparatus comprising: a processing unit for compressing a powder to process a pellet having a predetermined shape; A furnace in which a gas oxidized by interaction with the pellets is distributed; A conveyor having a bent portion or groove corresponding to the predetermined shape and arranged so that the pellet enters the interior of the furnace; A support disposed inside the furnace to push the pellet into the bent portion or groove or to withdraw the pellet from the bent portion or groove; . ≪ / RTI >

According to the present invention, the uniform heat treatment / reduction for the work can be performed efficiently, so that the amount of heat, gas, or time required for uniform heat treatment / reduction can be saved.

According to an embodiment of the present invention, even if an additional power unit is not provided in the furnace, the material can be uniformly heat-treated or reduced, thereby reducing cost or space required for uniform heat treatment / reduction.

According to an embodiment of the present invention, since the material can be rotated without receiving a large force, uniform heat treatment / reduction can be stably performed on a material having a low durability.

According to an embodiment of the present invention, the uniform heat treatment / reduction of the material can be performed while minimizing the movement of the material, and uniform heat treatment / reduction can be stably performed.

1 is a view showing a uniform heat treatment apparatus according to an embodiment of the present invention.
2 is a view illustrating the shape of a work.
FIG. 3 is a view showing a state of a blank according to a heat treatment time. FIG.
Fig. 4 is a view showing the rotation of the material by the support. Fig.
5 is a view showing a uniform reduction apparatus according to an embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The shape and the size of the elements in the drawings may be exaggerated for clarity and the same elements are denoted by the same reference numerals in the drawings.

1 is a view showing a uniform heat treatment apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the uniform heat treatment apparatus according to an embodiment of the present invention includes a furnace 110, a conveyor 120, and a support base 130 to uniformly heat the workpiece 10.

The furnace 110 may have a heat treatment space. For example, the furnace 110 may include a housing surrounding the heat treatment space, a heating unit disposed inside the furnace 110 to generate heat, a temperature sensing unit 110 for sensing the internal temperature of the furnace 110, A temperature control unit for controlling the heating unit so that the internal temperature of the furnace 110 falls within a predetermined temperature range based on the detection result of the temperature sensing unit, . For example, the predetermined temperature range may be 850 to 950 degrees, but is not limited thereto.

In the furnace 110, a gas oxidized by interaction with the material 10 may be distributed. Accordingly, the material 10 can be reduced together with the heat treatment.

The conveyor 120 may be arranged so that the workpiece 10 has a bent portion or groove so as to form an insertion space 121 into which at least a part of the workpiece 10 is inserted so as to enter the heat treatment space of the furnace 110 have. The conveyor 120 may be embodied as a conveyor belt that conveys the material 10 lying on one side by its circulation operation.

The position of the bent portion or the groove may be moved together with the workpiece 10 by the conveying operation of the conveyor 120, but it may be fixed according to the design. For example, the curved portion or groove may have a concavo-convex relationship with a portion of the shape of the material 10, and may have a thickness that is less than or equal to the thickness of the planar portion of the conveyor 120.

The support 130 may be arranged to contact the workpiece 10 by the conveyor 120 in the heat treatment space of the furnace 110. For example, the support 130 may be spaced from the conveyor 120 and secured to the furnace 110. When the distance between the support base 130 and the conveyor 120 is shorter than the length of one side of the workpiece 10, the support base 130 can contact the conveyed workpiece 10 without moving. For example, the supporter 130 may be embodied as a plurality of members arranged side by side in the width direction so as to stably push the workpiece 10 therebetween.

The material 10 may be inserted into the insertion space 121 of the conveyor 120 by contacting the support 130 in the course of the transfer. Here, the workpiece 10 can be rotated.

The material 10 inserted into the insertion space 121 can be released from the insertion space 121 by contacting the support 130 in the course of the transfer. Here, the material 10 may rotate in the same direction as the rotation direction when the material 10 is inserted into the insertion space 121.

Therefore, the direction in which each surface of the workpiece 10 faces may be different from that before the contact with the supporter 130. That is, the surface of the material 10, which is not directly exposed to heat, may be directly exposed to heat by the supporter 130. Thus, each surface of the workpiece 10 can be heat treated quickly and uniformly.

2 is a view illustrating the shape of a work.

2, the ceramic or metal powder 1 is formed of at least one of a first material 11, a second material 12, a third material 13, a fourth material 14 and a fifth material 15 It can be compression molded into one. The first to fifth materials 11, 12, 13, 14, and 15 may be processed into pellets.

Further, the conveyor may have a bent portion or a groove having a shape corresponding to the shape of at least one of the first to fifth materials 11, 12, 13, 14, 15.

For example, the conveyor may have a plurality of curved portions or grooves having different shapes to transport all the various types of materials. Here, the first to fifth materials 11, 12, 13, 14, and 15 may be designated at different positions of the conveyor when they are placed on one side of the conveyor.

On the other hand, the second and fourth materials (12, 14) can be placed in the bent portion or groove of the conveyor. Here, the support can roll the second and fourth materials 12, 14 to move to the second bent portion or the second groove of the conveyor. For example, the distance between the second curved portion or the second groove and the curved portion or groove may be set to a length of one half of the circumference of the second and fourth materials (12, 14). Accordingly, the second and fourth materials 12 and 14 can be rotated by about 180 degrees.

FIG. 3 is a view showing a state of a blank according to a heat treatment time. FIG.

Referring to FIG. 3, the blank 16, which has not been heat-treated, may be a heat-treated material 17 about half of the heat-treated space of the furnace, and the rotated material 18 may be completely heat-treated.

When half of the heat-treated material 17 is rotated, the time required for the heat-treated material 17 to be completely heat-treated may be shorter than when the material 17 is not rotated.

That is, the uniform heat treatment apparatus according to an embodiment of the present invention can efficiently perform the uniform heat treatment on the material, thereby saving heat or time required for uniform heat treatment.

On the other hand, the time required until the heat-treated material 16 is completely heat-treated may vary depending on the size or the temperature of the material. If the length of one side of the material is 10 mm and the temperature of the furnace is 850 to 950 degrees, the required time may be about 80 minutes. If the length of one side of the blank is 30 mm and the temperature of the furnace is 850 to 950 degrees, the time required may be about 102 minutes.

Meanwhile, when the uniform heat treatment apparatus according to an embodiment of the present invention performs the reduction together with the heat treatment, the color of the reduced portion of the work may vary. For example, the color of the unreduced portion of the heat treated material 17 may be close to black due to iron oxide. In addition, the color of the reduced part of the heat treated material 17 may be close to gray by the reduction of iron oxide.

Fig. 4 is a view showing the rotation of the material by the support. Fig.

The vertex of the material 10a placed on one side of the conveyor 120 can be inserted into the bent portion or groove 121 by the support 130. [

The bent portion or the vertex of the workpiece 10b inserted into the groove 121 can escape from the bent portion or the groove 121 by the support 130. [

The second vertex of the workpiece 10c deviating from the bent portion or the groove 121 can be inserted into the second bent portion or the second groove 122 by the support 130. [

The second vertex of the material 10d inserted into the second bent portion or the second groove 122 can be released from the second bent portion or the second groove 122 by the support 130. [

The workpiece 10e deviating from the second bent portion or the second groove 122 can be rotated about 180 degrees from the workpiece 10a placed on one side of the conveyor 120. [

The support 130 can rotate the workpiece to a minimum using a reaction to the force that the conveyor conveys the workpiece. That is, even if no additional power unit is provided in the furnace 110, the support 130 can rotate the workpiece to the minimum, thereby reducing cost or space required for uniform heat treatment / reduction.

In addition, since the support 130 can rotate the workpiece without applying a large force to the workpiece, uniform heat treatment / reduction can be stably performed on the workpiece having a low durability.

In addition, since the support 130 can rotate the material only for a specific time after entering the interior of the furnace 110, the movement of the material is minimized, and the heat treatment / reduction action of the material is not greatly affected Uniform heat treatment / reduction of the material can be performed.

5 is a view showing a uniform reduction apparatus according to an embodiment of the present invention.

5, a uniform reduction apparatus according to an embodiment of the present invention may include a furnace 210, a conveyor 220, a support 230, a processing unit 240, and a support control unit 250 , The pellets can be uniformly reduced.

The gas which is oxidized by the interaction with the pellets may be distributed inside the furnace 210. For example, the gas may comprise hydrogen or carbon monoxide. If iron oxide is included in the pellet, the gas may be a hydrogen gas that reduces the iron oxide.

The conveyor 220 may be arranged to have a curved portion or groove 221 corresponding to the shape of the pellet so that the pellet enters the interior of the furnace.

The support 230 may be disposed within the furnace 210 to push the pellet into the bent portion or groove 221 or to withdraw the pellet from the bent portion or groove 221. In this process, the pellet can be rotated.

Water vapor may be generated in the pellet by oxidation / reduction action. The water vapor may interfere with the reducing action of the inside of the pellet. The support 230 may rotate the pellet so that each side of the pellet is uniformly exposed to the gas. Accordingly, uniform reduction of the pellets can be efficiently performed.

The machining unit 240 can process the pellets having a predetermined shape by compression-molding the powder. The predetermined shape may correspond to the shape of the bent portion or groove 221.

If the machining portion 240 processes a pellet having a hexahedral shape, the bent portion or groove 221 may provide a space in which the two vertexes of the pellet are inserted.

Support support control 250 can move support 230 in a direction opposite to the direction in which pellets are conveyed by conveyor 220. [ If the internal space of the furnace 210 is small, the feed rate of the pellets may be slow. If the transfer speed of the pellets is slow, the reaction size of the support table 230 to the pellets may be small. The supporter control unit 250 may increase the reaction size using a force to move the supporter 230.

The supporter control unit 250 controls the supporter 230 to pellet the supporter 230 at a predetermined time so that the supporter 230 rotates the pellet for a predetermined time even if the curved portion or the groove 221 of the conveyor 220 is not moved. .

In addition, the supporter control unit 250 may control the separation distance of the supporter 230 with respect to the conveyor 220. For example, the supporter control unit 250 moves the supporter 230 downward before the pellet contacts the supporter 230, and after a predetermined time has elapsed after the pellet abuts against the supporter 230 The support base 230 can be moved upward. Thus, the pellet can be stably rotated as needed.

The present invention is not limited to the above-described embodiments and the accompanying drawings. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be self-evident.

10: Material
110, 210:
120, 220: Conveyor
121, 221: Space to be inserted
130, 230: Support
240:
250:

Claims (9)

A furnace having a heat treatment space;
A conveyor having a bent portion or a groove so as to form a space into which at least a part of the material is inserted and the material being arranged to enter the heat treatment space; And
A support which is in contact with the workpiece by transfer of the conveyor in the heat treatment space and at least a part of the workpiece is introduced into the bent portion or the groove or out of the bent portion or groove; Wherein the heat treatment apparatus comprises:
The method according to claim 1,
Further comprising a processing unit for processing the shape of the workpiece into a predetermined shape before the workpiece enters the heat treatment space,
Wherein the shape of the bent portion or groove corresponds to the predetermined shape.
3. The method of claim 2,
Wherein the machining portion is formed by compression-molding powder to process the material.
The method according to claim 1,
The conveyor further has a second bent portion or a second groove,
Wherein the workpiece has a vertex inserted into the bent portion or the groove and a second vertex inserted into the second bent portion or the second groove.
A furnace having a heat treatment space;
A conveyor having a bent portion or a groove so as to form a space into which at least a part of the material is inserted and the material being arranged to enter the heat treatment space; And
A support disposed in the heat treatment space in contact with the workpiece by the conveyor; Lt; / RTI >
Wherein the support pushes the workpiece to the bent portion or groove and pulls the workpiece out of the bent portion or groove.
A furnace having a heat treatment space;
A conveyor having a bent portion or a groove so as to form a space into which at least a part of the material is inserted and the material being arranged to enter the heat treatment space;
A support disposed in the heat treatment space in contact with the workpiece by the conveyor; And
And a support table control part for moving the support table in a direction opposite to a direction in which the workpiece is conveyed by the conveyor.
A furnace having a heat treatment space;
A conveyor having a bent portion or a groove so as to form a space into which at least a part of the material is inserted and the material being arranged to enter the heat treatment space;
A support disposed in the heat treatment space in contact with the workpiece by the conveyor; And
And a supporter control unit for controlling a distance of the supporter to the conveyor.
The method according to claim 1,
Wherein the gas is distributed in the heat treatment space and oxidized by interaction with the material.
A processing unit for processing a pellet having a predetermined shape by compression-molding the powder;
A furnace in which a gas oxidized by interaction with the pellets is distributed;
A conveyor having a bent portion or groove corresponding to the predetermined shape and arranged so that the pellet enters the interior of the furnace;
A support disposed inside the furnace to push the pellet into the bent portion or groove or to withdraw the pellet from the bent portion or groove; . ≪ / RTI >
KR1020160169523A 2016-12-13 2016-12-13 Uniform annealing apparatus and uniform reduction apparatus KR101867717B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970001137B1 (en) * 1992-11-19 1997-01-29 가부시끼가이샤 도요다 지도우 쇼끼 세이사꾸쇼 Piston type compressor with a rotary suction valve
KR20110058371A (en) 2009-11-26 2011-06-01 주식회사 포스코 A cold bonnded pellet and method for preparing thereof
KR20110058340A (en) * 2009-11-26 2011-06-01 이근상 Rotating feed device of bar and heat treatment equipment of bar using the that
JP2013181230A (en) * 2012-03-02 2013-09-12 Nippon Steel & Sumikin Engineering Co Ltd Cooling bed for steel material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970001137B1 (en) * 1992-11-19 1997-01-29 가부시끼가이샤 도요다 지도우 쇼끼 세이사꾸쇼 Piston type compressor with a rotary suction valve
KR20110058371A (en) 2009-11-26 2011-06-01 주식회사 포스코 A cold bonnded pellet and method for preparing thereof
KR20110058340A (en) * 2009-11-26 2011-06-01 이근상 Rotating feed device of bar and heat treatment equipment of bar using the that
JP2013181230A (en) * 2012-03-02 2013-09-12 Nippon Steel & Sumikin Engineering Co Ltd Cooling bed for steel material

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