CN112626325A - Tool for heat treatment of special-shaped steel casting and hoisting method - Google Patents
Tool for heat treatment of special-shaped steel casting and hoisting method Download PDFInfo
- Publication number
- CN112626325A CN112626325A CN202011548890.1A CN202011548890A CN112626325A CN 112626325 A CN112626325 A CN 112626325A CN 202011548890 A CN202011548890 A CN 202011548890A CN 112626325 A CN112626325 A CN 112626325A
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- China
- Prior art keywords
- hoisting
- casting
- heat treatment
- assembly
- outer frame
- 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
Links
- 238000005266 casting Methods 0.000 title claims abstract description 68
- 238000010438 heat treatment Methods 0.000 title claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 29
- 239000010959 steel Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000010791 quenching Methods 0.000 claims abstract description 21
- 230000000171 quenching effect Effects 0.000 claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000005422 blasting Methods 0.000 claims description 12
- 206010066054 Dysmorphism Diseases 0.000 claims 1
- 238000007669 thermal treatment Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
-
- 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
- C21D9/0025—Supports; Baskets; Containers; Covers
-
- 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
Abstract
The invention relates to a tool for heat treatment of a special-shaped steel casting and a hoisting method, wherein the tool comprises an outer frame assembly and a hoisting assembly; the outer frame component comprises a bottom plate, a stand column, a cross beam, a lifting lug, a clamping seat, a positioning seat and a liquid discharge hole; the hoisting assembly comprises a hanging rod, a cross rod, a reinforcing rib, a support, a hook and a hanging ring. The invention can ensure the stability of the casting in the heat treatment and hoisting processes, and avoid the direct contact with the casting in the quenching process, thereby preventing the casting from deforming; simultaneously through the perpendicular mode charge, and the frock can pile up, effectively improves furnace space utilization, increase charge volume. In addition, the detachable hoisting system is convenient to load, unload and hoist, and the operation efficiency can be improved.
Description
Technical Field
The invention relates to the technical field of heat treatment, in particular to a tool and a hoisting method for preventing heat treatment deformation of a special-shaped steel casting and facilitating shot blasting.
Background
The heat treatment is a key process for improving the internal structure of the casting, the special-shaped steel casting is a key component on a metro bogie, the whole special-shaped steel casting is a thin-wall special-shaped part, and the casting is very easy to distort and deform in the heat treatment process, so that the size of the casting cannot meet the requirements of a drawing and the casting is scrapped. After thermal nursing, the irregular parts are easy to stack when being hoisted during shot blasting, and the shot blasting on the surface of the casting part is incomplete.
In the prior art, in order to prevent the deformation of a special-shaped part, a furnace charging mode of tiling, flattening and non-stacking and a method for increasing deformation-preventing reinforcing ribs are mostly adopted during heat treatment. Under the condition of not using a tool, when the special-shaped piece is quenched, the special-shaped piece is integrally hoisted to a quenching medium in a row in a beam penetrating mode, and the hoisting tool directly contacts with a casting body, so that the casting is easy to deform at a high temperature state, and the casting is scrapped; the heat treatment is also carried out by adopting a mode of framing and tiling, the lifting hook is hung on the frame during quenching and is not in direct contact with the casting body, and the casting deformation is improved to a certain extent.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the structural characteristics of the special-shaped piece, the vertical furnace charging is adopted, and the detachable heat treatment tool which is easy to load and unload the casting is used for heat treatment, so that the casting is prevented from deforming, the furnace charging efficiency and the furnace charging amount can be improved, the product yield is improved, and the cost is reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows: a tool for heat treatment of a special-shaped steel casting comprises an outer frame assembly and a hoisting assembly, wherein the outer frame assembly comprises a bottom plate, a stand column, a cross beam, a lifting lug, a positioning seat and a liquid discharge hole; the upright posts, the cross beams and the bottom plate are welded to form a frame; the lifting lug is arranged on the side surface of the frame; the positioning seat is arranged in the middle of the bottom plate, and liquid discharge holes are distributed in the bottom plate; the hoisting assembly comprises a hoisting rod, a cross rod, a support, a hook and a hoisting ring; the cross rods are respectively welded at the upper end and the lower end of the suspender, and the support is welded at the bottom of the cross rod at the lower end of the suspender; the bottom of the suspender is inserted into the positioning seat of the bottom plate, and the support is contacted with the bottom plate; the hanging ring is arranged at the top of the hanging rod; the hook is welded below the cross bar at the upper end of the hanging rod.
Furthermore, the outer frame assembly also comprises a clamping seat, and the clamping seat is welded at the top of the upright post.
Furthermore, the cross rod is welded with the hanging rod in a cross shape.
Furthermore, the hoisting assembly further comprises a reinforcing rib, and the reinforcing rib is arranged between the cross rod at the upper end of the hanging rod and the cross rod at the lower end of the hanging rod.
Meanwhile, the invention also provides a hoisting method of the tool for the heat treatment of the special-shaped steel casting, which comprises the following steps,
the first step is as follows: placing the casting on a hoisting assembly in a hoisting mode, and clamping the casting at the position of a hook of the hoisting assembly;
the second step is that: hoisting the hoisting assembly with the casting, placing the hoisting assembly in the outer frame assembly, enabling the bottom of a suspender of the hoisting assembly to fall into a positioning seat of the outer frame assembly, and enabling a support of the hoisting assembly to be in contact with a bottom plate of the outer frame assembly;
the third step: hoisting the whole tool to a trolley on a heat treatment furnace platform through a lifting lug of the outer frame assembly, closing the furnace for heat treatment, opening a furnace door after the heat treatment is finished, and pulling out the trolley;
the fourth step: hoisting the high-position tooling to the quenching medium integrally through the lifting lug of the outer frame assembly, descending and immersing the tooling into the heat treatment medium, and finishing the quenching operation;
the fifth step: after quenching is finished, hoisting the tool and the casting out of the quenching medium in the same way, and draining the quenching medium;
and a sixth step: hoisting the hoisting assembly together with the casting by a hoisting ring of the hoisting assembly, and transferring the hoisting assembly and the casting to a shot blasting machine for shot blasting;
the seventh step: and after the shot blasting is finished, taking down the casting to finish the heat treatment operation.
The invention has the advantages that the defects in the background technology are overcome, the stability of the casting in the heat treatment and hoisting processes can be ensured, the direct contact with the casting in the quenching process is avoided, and the deformation of the casting is prevented; meanwhile, the furnace is charged in a vertical mode, and the tools can be stacked, so that the space utilization rate of a hearth is effectively improved, and the charging amount is increased; in addition, the detachable hoisting system is convenient to load, unload and hoist, and the operation efficiency can be improved.
Drawings
FIGS. 1(a) - (c) are schematic structural diagrams of the tool for heat treatment of the special-shaped steel casting;
FIGS. 2(a) - (c) are schematic structural diagrams of an outer frame in the tool for heat treatment of the special-shaped steel casting according to the invention;
FIGS. 3(a) - (c) are schematic structural diagrams of a hoisting assembly in the tool for heat treatment of the special-shaped steel casting;
in the figure: a-an outer frame component, B-a hoisting component, C-a casting, 1-a bottom plate, 2-a stand column, 3-a cross beam, 4-a lifting lug, 5-a clamping seat, 6-a positioning seat, 7-a liquid drainage hole, 8-a lifting rod, 9-a cross rod, 10-a reinforcing rib, 11-a support, 12-a hook and 13-a lifting ring.
Detailed Description
The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The tool for heat treatment of the special-shaped steel castings shown in the figures 1 to 3 comprises an outer frame component A and a hoisting component B. The outer frame component A comprises a bottom plate 1, a stand column 2, a cross beam 3, a lifting lug 4, a clamping seat 5, a positioning seat 6 and a liquid discharge hole 7. The hoisting assembly B comprises a hanger rod 8, a cross rod 9, a reinforcing rib 10, a support 11, a hook 12 and a hanging ring 13.
The bottom plate 1 is formed by machining a heat-resistant steel plate and aims to bear the weight of a casting and the whole tool.
The upright posts 2 and the cross beams 3 are processed by heat-resistant steel profiles and are connected with the bottom plate in a welding mode, so that a frame for bearing is formed;
the lifting lug 4 is formed by processing heat-resistant steel, is connected to the frame in a welding mode and is of a lifting stress structure.
The clamping seat 5 is formed by processing heat-resistant steel and is connected to the stand column in a welding mode, and the purpose of the clamping seat is to bear and fix the tool on the upper layer when the same tools are stacked.
The liquid discharge hole 7 is formed on the bottom plate in a machining mode and aims to provide a flow passage for a quenching medium to flow out during quenching.
The outer frame component A aims to bear the casting C and provide a lifting stress structure for the transfer in the casting heat treatment process.
The hanger rod 8 is made of heat-resistant steel and aims to fix and bear the surrounding transverse rods.
The cross rod 9 is made of heat-resistant steel and is connected in a welding mode, and the purpose of the cross rod is to fix and bear castings.
The reinforcing ribs 10 are made of heat-resistant steel and are connected in a welding mode, and the purpose of the reinforcing ribs is to increase the rigidity of a hoisting system and prevent the cross rod from deforming.
The support 11 is made of heat-resistant steel and is connected in a welding mode, and the purpose of the support is to bear the weight of a hoisting system and a casting.
The hook 12 is made of heat-resistant steel and is connected to a hoisting system in a welding mode, and the purpose of the hook is to fix a casting.
The hanging ring 13 is made of heat-resistant steel, is embedded into the hanging rod through threads, and aims to provide a stress structure for lifting.
The hoisting component B is of a frame structure and aims to fix and bear the casting C and provide a hoisting stress structure for taking out the casting.
The tool for heat treatment is assembled by an outer frame assembly and a hoisting assembly. The upright columns in the hoisting assembly can be nested and matched with the positioning seat structure in the outer frame assembly, and the support seats in the hoisting assembly fall on the bottom plate of the outer frame assembly to form a complete tool for heat treatment.
The tool for preventing the deformation of the special-shaped steel casting during the heat treatment has the characteristics of convenience in loading, large loading capacity and high loading efficiency, and can effectively prevent the deformation of the casting and improve the production efficiency.
The use method of the tool for the heat treatment deformation of the special-shaped steel casting comprises the following steps:
the first step is as follows: and placing the casting on a lifting device in a lifting mode, and clamping the casting at the position of the hook.
The second step is that: the lifting device with the castings is lifted and placed in the outer frame, the bottom of a lifting rod of the lifting system falls into the outer frame positioning seat, and meanwhile, a support of the lifting system is in contact with the bottom plate.
The third step: the whole tool is hoisted to the trolley of the heat treatment furnace platform through the lifting lugs, the furnace is closed for heat treatment, and after the heat treatment is finished, the furnace door is opened and the trolley is pulled out.
The fourth step: the high-position tool is lifted to the quenching medium through the outer frame lifting lug and is descended and immersed into the heat treatment medium to finish the quenching operation.
The fifth step: after quenching is finished, the quenching medium is lifted out of the tool and the casting in the same way, and the quenching medium is drained.
And a sixth step: and hoisting the hoisting device together with the casting by the hoisting ring, and transferring the hoisting device and the casting into a shot blasting machine for shot blasting.
The seventh step: and after the shot blasting is finished, taking down the casting to finish the heat treatment operation.
While particular embodiments of the present invention have been described in the foregoing specification, various modifications and alterations to the previously described embodiments will become apparent to those skilled in the art from this description without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a frock is used in thermal treatment of dysmorphism steel casting which characterized in that: the device comprises an outer frame assembly and a hoisting assembly, wherein the outer frame assembly comprises a bottom plate, an upright post, a cross beam, a lifting lug, a positioning seat and a liquid discharge hole; the upright posts, the cross beams and the bottom plate are welded to form a frame; the lifting lug is arranged on the side surface of the frame; the positioning seat is arranged in the middle of the bottom plate, and liquid discharge holes are distributed in the bottom plate; the hoisting assembly comprises a hoisting rod, a cross rod, a support, a hook and a hoisting ring; the cross rods are respectively welded at the upper end and the lower end of the suspender, and the support is welded at the bottom of the cross rod at the lower end of the suspender; the bottom of the suspender is inserted into the positioning seat of the bottom plate, and the support is contacted with the bottom plate; the hanging ring is arranged at the top of the hanging rod; the hook is welded below the cross bar at the upper end of the hanging rod.
2. The tooling for heat treatment of the special-shaped steel casting according to claim 1, characterized in that: the outer frame component also comprises a clamping seat, and the clamping seat is welded at the top of the upright post.
3. The tooling for heat treatment of the special-shaped steel casting according to claim 1, characterized in that: the cross rod is welded with the hanging rod in a cross shape.
4. The tooling for heat treatment of the special-shaped steel casting according to claim 1, characterized in that: the hoisting assembly further comprises a reinforcing rib, and the reinforcing rib is arranged between the cross rod at the upper end of the hanging rod and the cross rod at the lower end of the hanging rod.
5. The hoisting method of the tool for the heat treatment of the special-shaped steel casting according to claim 1 is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
the first step is as follows: placing the casting on a hoisting assembly in a hoisting mode, and clamping the casting at the position of a hook of the hoisting assembly;
the second step is that: hoisting the hoisting assembly with the casting, placing the hoisting assembly in the outer frame assembly, enabling the bottom of a suspender of the hoisting assembly to fall into a positioning seat of the outer frame assembly, and enabling a support of the hoisting assembly to be in contact with a bottom plate of the outer frame assembly;
the third step: hoisting the whole tool to a trolley on a heat treatment furnace platform through a lifting lug of the outer frame assembly, closing the furnace for heat treatment, opening a furnace door after the heat treatment is finished, and pulling out the trolley;
the fourth step: hoisting the high-position tooling to the quenching medium integrally through the lifting lug of the outer frame assembly, descending and immersing the tooling into the heat treatment medium, and finishing the quenching operation;
the fifth step: after quenching is finished, hoisting the tool and the casting out of the quenching medium in the same way, and draining the quenching medium;
and a sixth step: hoisting the hoisting assembly together with the casting by a hoisting ring of the hoisting assembly, and transferring the hoisting assembly and the casting to a shot blasting machine for shot blasting;
the seventh step: and after the shot blasting is finished, taking down the casting to finish the heat treatment operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011548890.1A CN112626325A (en) | 2020-12-24 | 2020-12-24 | Tool for heat treatment of special-shaped steel casting and hoisting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011548890.1A CN112626325A (en) | 2020-12-24 | 2020-12-24 | Tool for heat treatment of special-shaped steel casting and hoisting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112626325A true CN112626325A (en) | 2021-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011548890.1A Pending CN112626325A (en) | 2020-12-24 | 2020-12-24 | Tool for heat treatment of special-shaped steel casting and hoisting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112626325A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992019778A1 (en) * | 1991-04-26 | 1992-11-12 | Klefisch Gmbh | Carrier for material to be annealed |
| CN101633977A (en) * | 2009-05-08 | 2010-01-27 | 青岛优耐尔精密织针有限公司 | Method for vacuum hardening of knitting needle of circular knitting machine |
| CN102887292A (en) * | 2012-10-08 | 2013-01-23 | 江苏通光强能输电线科技有限公司 | Foldable combined wire coil bracket and bracket set |
| CN206256105U (en) * | 2016-11-23 | 2017-06-16 | 中原特钢股份有限公司 | A kind of vertical quenching frock of big gauge modules |
| US20190144964A1 (en) * | 2016-04-28 | 2019-05-16 | Arianegroup Sas | Highly modular loading tools |
| CN111041159A (en) * | 2019-12-19 | 2020-04-21 | 陕西宏远航空锻造有限责任公司 | Tool for preventing warping caused by heat treatment and using method thereof |
| CN214142463U (en) * | 2020-12-24 | 2021-09-07 | 江苏朗锐茂达铸造有限公司 | Tool for heat treatment of special-shaped steel casting |
-
2020
- 2020-12-24 CN CN202011548890.1A patent/CN112626325A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992019778A1 (en) * | 1991-04-26 | 1992-11-12 | Klefisch Gmbh | Carrier for material to be annealed |
| CN101633977A (en) * | 2009-05-08 | 2010-01-27 | 青岛优耐尔精密织针有限公司 | Method for vacuum hardening of knitting needle of circular knitting machine |
| CN102887292A (en) * | 2012-10-08 | 2013-01-23 | 江苏通光强能输电线科技有限公司 | Foldable combined wire coil bracket and bracket set |
| US20190144964A1 (en) * | 2016-04-28 | 2019-05-16 | Arianegroup Sas | Highly modular loading tools |
| CN206256105U (en) * | 2016-11-23 | 2017-06-16 | 中原特钢股份有限公司 | A kind of vertical quenching frock of big gauge modules |
| CN111041159A (en) * | 2019-12-19 | 2020-04-21 | 陕西宏远航空锻造有限责任公司 | Tool for preventing warping caused by heat treatment and using method thereof |
| CN214142463U (en) * | 2020-12-24 | 2021-09-07 | 江苏朗锐茂达铸造有限公司 | Tool for heat treatment of special-shaped steel casting |
Non-Patent Citations (1)
| Title |
|---|
| 王国东;: "金属材料热处理变形原因及防止变形的技术措施", 现代制造技术与装备, no. 03, 31 March 2018 (2018-03-31), pages 105 - 106 * |
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