CN113699354A - Heat treatment pit furnace single part built-in quenching tool and assembly method - Google Patents
Heat treatment pit furnace single part built-in quenching tool and assembly method Download PDFInfo
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- CN113699354A CN113699354A CN202111133643.XA CN202111133643A CN113699354A CN 113699354 A CN113699354 A CN 113699354A CN 202111133643 A CN202111133643 A CN 202111133643A CN 113699354 A CN113699354 A CN 113699354A
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- lifting
- tool
- heat treatment
- shaft
- furnace
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 26
- 238000010791 quenching Methods 0.000 title claims abstract description 22
- 230000000171 quenching effect Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 19
- 210000000078 claw Anatomy 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000009434 installation Methods 0.000 claims abstract 2
- 239000000725 suspension Substances 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
-
- 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
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
-
- 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
- C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The utility model provides a heat treatment pit furnace single part built-in quenching frock, includes jib, lifting seat, brace rod and a pair of lifting claw, the lifting seat is discoid, through brace rod above that and the jib fixed connection of cup jointing in centre of a circle department, a pair of lifting claw of bottom installation of jib sets up concentric horizontal pin hole on the lifting claw respectively, the horizontal pin alternates in the concentric horizontal pin hole, it is inboard to lie in position overlap joint rings apex angle between two lifting claws on the horizontal pin, rings weld on the axle part, the lifting seat is arranged in pit furnace bearing on the circle. The tool is simple in structure, convenient to machine and simple and rapid to operate. The assembling method of the tool comprises the steps of manufacturing the tool, installing shaft parts, placing the tool and the like. By adopting the structure, the quenching device is suitable for quenching a single large shaft part in a shaft furnace, and the part is suspended and hung in the air, so that the occurrence of heat treatment distortion is reduced; the assembly method can improve the adaptability of the tool to heat treatment and improve the stability of the tool in the process of hanging the workpiece.
Description
Technical Field
The invention belongs to the technical field of heat treatment lifting tool tools, and particularly relates to a heat treatment pit furnace single-part built-in quenching tool and an assembly method.
Background
Quenching is an important content of a heat treatment process, a large-scale pit furnace is generally used for quenching heat treatment of the shaft parts, the processed workpieces are generally heavy, and higher heating temperature and longer heating time are required. At present, most of tools are used by an external-bearing type suspension pit furnace, the external-bearing type suspension pit furnace cannot be provided with a circulating fan, and the uniformity of furnace temperature is not high. The precision of the current manufacturing production to equipment is higher and higher, the shaft furnace is provided with the circulating fan to become a normal state, the shaft furnace provided with the circulating fan requires that a workpiece is loaded in an internal bearing type furnace loading mode, and the requirement for quenching a larger part in the built-in shaft furnace is met.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a heat treatment pit furnace single-part built-in quenching tool and an assembly method, wherein a workpiece suspension hanging mode is adopted, so that the occurrence of heat treatment distortion is reduced; the adaptability of the tool to heat treatment and the stability of the hanging process are improved, the operation is simple and convenient, and the labor is saved.
The invention provides a heat treatment pit furnace single part built-in quenching tool, which comprises a hanging rod (1), a hanging seat (2), a supporting rib (4) and a pair of hanging claws (3), wherein the hanging seat (2) is disc-shaped, the hanging rod (1) sleeved at the circle center is fixedly connected with the supporting rib (4) on the hanging seat, the pair of hanging claws (3) are arranged at the bottommost part of the hanging rod, concentric transverse pin holes are respectively formed in the hanging claws (3), transverse pins (6) are inserted in the concentric transverse pin holes, the positions of the transverse pins (6) between the two hanging claws (3) are lapped on the inner side of the vertex angle of a hanging ring (5), the hanging ring (5) is welded on a shaft part (7), and the hanging seat (2) is arranged on a bearing ring in a pit furnace.
As a further technical scheme of the invention, the top of the suspender (1) is provided with a step for a hanging tong to grab in and out of the furnace, the hanging seat (2) is connected with the suspender (3) through a supporting rib (4), and the supporting rib (4) is provided with a notch for installing a shaft furnace air duct.
Furthermore, the lower part of the hanging ring (5) is welded and fixed with the shaft part (7), and the length of a welding line is 120-200 mm.
Furthermore, a transverse pin (6) is inserted into a concentric transverse pin hole of the lifting claw (3), the inner side of the vertex angle of the lifting ring (5) is lapped on the transverse pin, and the inner side of the vertex angle of the lifting ring (5) is matched with the outer surface of the transverse pin (6).
The invention also provides an assembly method of the built-in quenching tool for single large parts of the heat treatment pit furnace, which comprises the following steps,
step S1, manufacturing a tool: the tool is formed by integral casting, and is subjected to normalizing treatment after casting, wherein the normalizing process comprises the following steps: air cooling at 930 deg.C for 3.5H;
step S2, mounting shaft parts: preheating a shaft part, welding a hanging ring at the top of the shaft part after preheating, inserting the hanging ring between a pair of hanging claws, inserting a transverse pin into a transverse pin hole of the hanging claw, and lapping the inner side of the vertex angle of the hanging ring on the transverse pin;
step S3, tool placement: and lifting the whole tool with the shaft part installed by using a lifting clamp, and placing the whole tool in the shaft furnace to enable the lifting seat to be located on a bearing ring in the shaft furnace.
Furthermore, the preheating temperature of the shaft part (7) is 450 ℃, and the time is 2-4 hours.
The tool has the advantages of simple structure, convenience in processing and simplicity and rapidness in operation. The assembling method of the tool comprises the steps of manufacturing the tool, installing shaft parts, placing the tool and the like. By adopting the structure, the quenching device is suitable for quenching a single large shaft part in a shaft furnace, and the part is suspended and hung in the air, so that the occurrence of heat treatment distortion is reduced; the assembly method can improve the adaptability of the tool to heat treatment and improve the stability of the tool in the process of hanging the workpiece.
Drawings
FIG. 1 is a first schematic view of a tooling structure of the present invention;
FIG. 2 is a schematic view of a tooling structure of the present invention;
FIG. 3 is a schematic view of a shaft part hanging structure according to the present invention;
fig. 4 is a top view of the tooling structure of the present invention.
Detailed Description
Referring to fig. 1-4, the present embodiment provides a heat treatment pit furnace single-component built-in quenching tool, including a suspension rod 1, a suspension seat 2, a supporting rib 4 and a pair of suspension claws 3, wherein the suspension seat 2 is disc-shaped, and is fixedly connected with the suspension rod 1 sleeved at the center of a circle through the supporting rib 4 thereon, the pair of suspension claws 3 is installed at the bottommost portion of the suspension rod, the suspension claws 3 are respectively provided with concentric transverse pin holes, transverse pins 6 are inserted into the concentric transverse pin holes, the transverse pins 6 are positioned between the two suspension claws 3 and overlap the inner sides of the vertex angles of suspension rings 5, the suspension rings 5 are welded on a shaft component 7, and the suspension seat 2 is arranged on a bearing ring in the pit furnace.
The top of the suspender 1 is provided with a step for gripping the furnace inlet and outlet by a hanging tong, the hanging seat 2 is connected with the suspender 3 by a supporting rib 4, and the supporting rib 4 is provided with a notch for installing a wind guide cylinder of the shaft furnace.
The lower part of the lifting ring 5 is welded and fixed with the shaft part 7, and the length of the welding line is 120-200 mm.
The transverse pin 6 is inserted into the concentric transverse pin hole of the lifting claw 3, the inner side of the top angle of the lifting ring 5 is lapped on the transverse pin, and the inner side of the top angle of the lifting ring 5 is matched with the outer surface of the transverse pin 6.
Thickness d of the suspension ring 51In mm; the mass G of the shaft part is in unit kg, and the relationship between the mass G and the unit kg satisfies the following conditions: g =2 k · pi · d1 2And/4, wherein k is a safety coefficient and takes a value of 0.85.
An assembly method of a built-in quenching tool for a single large part of a heat treatment pit furnace comprises the following steps,
step S1, manufacturing a tool: the tool is formed by integral casting, and is subjected to normalizing treatment after casting, wherein the normalizing process comprises the following steps: air cooling at 930 deg.C for 3.5H;
step S2, mounting shaft parts: preheating a shaft part, welding a hanging ring at the top of the shaft part after preheating, inserting the hanging ring between a pair of hanging claws, inserting a transverse pin into a transverse pin hole of the hanging claw, and lapping the inner side of the vertex angle of the hanging ring on the transverse pin;
step S3, tool placement: and lifting the whole tool with the shaft part installed by using a lifting clamp, and placing the whole tool in the shaft furnace to enable the lifting seat to be located on a bearing ring in the shaft furnace.
The preheating temperature of the shaft part 7 is 450 ℃, and the preheating time is 2-4 hours.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is intended to be protected by the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (6)
1. The utility model provides a heat treatment shaft furnace single part built-in quenching frock, its characterized in that, includes jib (1), hanger seat (2), brace rod (4) and a pair of lifting claw (3), hanger seat (2) are discoid, through brace rod (4) and the jib (1) fixed connection who cup joints in the centre of a circle department above that, the installation of the bottommost of jib is a pair of lifting claw (3), set up concentric horizontal pinhole on lifting claw (3) respectively, alternate horizontal round pin (6) in the concentric horizontal pinhole, it is inboard to lie in position overlap joint rings (5) apex angle between two lifting claws (3) on horizontal round pin (6), rings (5) weld on axle part (7), hanger seat (2) are arranged in shaft furnace bearing ring.
2. The heat treatment shaft furnace single-part built-in quenching tool according to claim 1, wherein the top of the suspension rod (1) is provided with a step for a lifting tong to grab in and out of the furnace, the lifting seat (2) is connected with the suspension rod (3) through a supporting rib (4), and the supporting rib (4) is provided with a notch for mounting a shaft furnace air duct.
3. The built-in quenching tool for single parts of a heat treatment pit furnace as claimed in claim 1, wherein the lower part of the lifting ring (5) is fixed with the shaft part (7) by welding, and the length of the welding seam is 120-200 mm.
4. The heat treatment shaft furnace single-part built-in quenching tool as claimed in claim 1, wherein the top of the lifting ring (5) is in an inverted V shape, the vertex angle of the lifting ring is inserted between a pair of the lifting claws (3), the transverse pin (6) is inserted into the concentric transverse pin hole of the lifting claw (3), the inner side of the vertex angle of the lifting ring (5) is lapped on the transverse pin, and the inner side of the vertex angle of the lifting ring (5) is matched with the outer surface of the transverse pin (6).
5. An assembly method of a built-in quenching tool for a single large part of a heat treatment pit furnace is characterized by comprising the following steps,
step S1, manufacturing a tool: the tool is formed by integral casting, and is subjected to normalizing treatment after casting, wherein the normalizing process comprises the following steps: air cooling at 930 deg.C for 3.5H;
step S2, mounting shaft parts: preheating a shaft part, welding a hanging ring at the top of the shaft part after preheating, inserting the hanging ring between a pair of hanging claws, inserting a transverse pin into a transverse pin hole of the hanging claw, and lapping the inner side of the vertex angle of the hanging ring on the transverse pin;
step S3, tool placement: and lifting the whole tool with the shaft part installed by using a lifting clamp, and placing the whole tool in the shaft furnace to enable the lifting seat to be located on a bearing ring in the shaft furnace.
6. The assembling method of the internally-installed quenching tool for the single large part of the heat treatment pit furnace according to claim 5, characterized in that the preheating temperature of the shaft part (7) is 450 ℃ and the time is 2-4 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111133643.XA CN113699354A (en) | 2021-09-27 | 2021-09-27 | Heat treatment pit furnace single part built-in quenching tool and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111133643.XA CN113699354A (en) | 2021-09-27 | 2021-09-27 | Heat treatment pit furnace single part built-in quenching tool and assembly method |
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| Publication Number | Publication Date |
|---|---|
| CN113699354A true CN113699354A (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111133643.XA Pending CN113699354A (en) | 2021-09-27 | 2021-09-27 | Heat treatment pit furnace single part built-in quenching tool and assembly method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005073413A1 (en) * | 2004-01-30 | 2005-08-11 | Rodolfo Napoli | Pit furnace closing system |
| KR101639348B1 (en) * | 2015-06-17 | 2016-07-22 | 이희영 | Hollowshafts heat treat method |
| CN106319170A (en) * | 2016-10-20 | 2017-01-11 | 南京中船绿洲机器有限公司 | Pit furnace quenching tool for heat treatment and assembling method thereof |
| CN110129533A (en) * | 2019-05-15 | 2019-08-16 | 南京中船绿洲机器有限公司 | A kind of heat treatment pit-type furnace built-in type quenching tooling and its assembly method |
| CN216688248U (en) * | 2021-09-27 | 2022-06-07 | 南京中船绿洲机器有限公司 | Heat treatment pit furnace single part built-in quenching tool |
-
2021
- 2021-09-27 CN CN202111133643.XA patent/CN113699354A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005073413A1 (en) * | 2004-01-30 | 2005-08-11 | Rodolfo Napoli | Pit furnace closing system |
| KR101639348B1 (en) * | 2015-06-17 | 2016-07-22 | 이희영 | Hollowshafts heat treat method |
| CN106319170A (en) * | 2016-10-20 | 2017-01-11 | 南京中船绿洲机器有限公司 | Pit furnace quenching tool for heat treatment and assembling method thereof |
| CN110129533A (en) * | 2019-05-15 | 2019-08-16 | 南京中船绿洲机器有限公司 | A kind of heat treatment pit-type furnace built-in type quenching tooling and its assembly method |
| CN216688248U (en) * | 2021-09-27 | 2022-06-07 | 南京中船绿洲机器有限公司 | Heat treatment pit furnace single part built-in quenching tool |
Non-Patent Citations (2)
| Title |
|---|
| 朱华新: "销―轴型热处理吊挂工装优化设计", 合肥工业大学学报(自然科学版), no. 03, pages 353 * |
| 柴畅: "大型轴类件吊挂攀和横销轴的强度设计", 安徽工学院学报, no. 04, pages 28 * |
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