CN110306031B - Method for reducing heat treatment deformation of sheet metal type angle part - Google Patents
Method for reducing heat treatment deformation of sheet metal type angle part Download PDFInfo
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- CN110306031B CN110306031B CN201910501231.3A CN201910501231A CN110306031B CN 110306031 B CN110306031 B CN 110306031B CN 201910501231 A CN201910501231 A CN 201910501231A CN 110306031 B CN110306031 B CN 110306031B
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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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Resistance Welding (AREA)
Abstract
The invention belongs to the technical field of heat treatment, and particularly relates to a method for reducing heat treatment deformation of sheet metal angle parts. The sheet metal angle part is easy to generate large deformation (such as warping and twisting) after heat treatment, and has large elasticity and difficult correction after heat treatment; the surface of the part has no machining allowance, and the correction trace remained on the surface of the part cannot be removed, so that the appearance quality of the part is influenced. The invention relates to a method for reducing heat treatment deformation of sheet metal angle parts, which comprises the steps of symmetrically welding/temporarily welding the same preformed pieces on two sides of a reinforcing plate, integrally carrying out heat treatment, separating and processing to obtain the final part. The deformation of the parts after heat treatment is greatly reduced, the shape correction workload is reduced, and the production efficiency is improved; the rejection rate of parts is reduced; meanwhile, the surface quality of the part can be improved. The surface quality of the parts can be improved, the difficulty and the workload of part shape correction are reduced, the parts are prevented from being scrapped, and the material consumption is saved.
Description
Technical Field
The invention belongs to the technical field of heat treatment, and particularly relates to a method for reducing heat treatment deformation of sheet metal angle parts.
Background
Sheet metal angle parts are generally low in rigidity, are easy to generate large deformation (such as warping and twisting) after heat treatment, are large in elasticity after heat treatment and are difficult to correct; on the other hand, the surface of the part has no machining allowance, and the correction trace left on the surface of the part cannot be removed, so that the appearance quality of the part is influenced.
Disclosure of Invention
The invention provides a method for reducing heat treatment deformation of sheet metal angle parts, which solves the problem of excessive manual intervention treatment caused by disordered heat treatment deformation in the prior art.
The invention relates to a method for reducing heat treatment deformation of sheet metal angle parts, which comprises the steps of symmetrically welding/temporarily welding the same preformed pieces on two sides of a reinforcing plate, carrying out heat treatment on the whole, and separating and processing to obtain the final part.
The pre-forming piece comprises a first pre-forming piece and a second pre-forming piece, and the first pre-forming piece and the second pre-forming piece are obtained by bending a square plate according to the actual bending angle of the part.
The first preformed piece and the second preformed piece are welding/temporary welding edges at the edges opposite to the opening, and the size of the welding/temporary welding edges is larger than 5mm of the maximum external dimension of the part.
The size of the reinforcing plate is larger than the opening size of the first and second preformed pieces.
And respectively welding/temporarily welding the first preformed piece and the second preformed piece on two sides of the reinforcing plate to form an intermediate configuration.
The weld/tack spot is removed during separation.
And respectively processing the separated first preform and the second preform into the shape of the part and correcting the shape.
The middle configuration comprises two symmetrical triangular structures, so that the rigidity of the whole structure is increased, and the respective quenching stress is mutually counteracted, thereby achieving the purpose of reducing the heat treatment deformation.
Has the advantages that: the deformation of the parts after heat treatment is greatly reduced, the shape correction workload is reduced, and the production efficiency is improved; the rejection rate of parts is reduced; meanwhile, the surface quality of the part can be improved. Can improve the surface quality of parts, reduce the difficulty and workload of part shape correction, avoid part scrapping and save material consumption
Drawings
FIG. 1 is a schematic diagram of an intermediate configuration of the present invention.
In the figure: 1-a first preform; 2-a reinforcing plate; 3-second preform
Detailed Description
The invention discloses a method for reducing heat treatment deformation of sheet metal angle parts, which comprises the following steps:
the first step is as follows: processing two preformed pieces with the same shape, wherein the two preformed pieces comprise a first preformed piece 1 and a second preformed piece 3, the edges opposite to the openings of the first preformed piece and the second preformed piece are welding/temporarily welding edges, and the size of the welding/temporarily welding edges is larger than the maximum outline size of a part by 5 mm; during processing, bending the square plate according to the actual bending angle of the part to respectively form a first preformed piece 1 and a second preformed piece 3;
the second step is that: processing a reinforcing plate 2, wherein the size of the reinforcing plate is larger than the opening size of the first preformed piece 1 and the second preformed piece 3;
the third step: as shown in fig. 1, the preform is symmetrically welded/temporarily welded on both sides of the reinforcing plate to form an intermediate configuration comprising two triangular structures; the triangular stable form can increase the rigidity of the part, and the two triangular components can play a role in mutually eliminating the stress of heat treatment when being welded together and then being subjected to heat treatment, thereby achieving the purpose of reducing the deformation of the heat treatment;
the fourth step: carrying out heat treatment on the whole welded piece/temporary welded piece;
the fifth step: removing the welding seam/temporary welding spot;
and a sixth step: and machining the appearance of the part and correcting the shape.
Claims (4)
1. A method for reducing heat treatment deformation of sheet metal type angle parts is characterized by comprising the following steps: the method comprises the steps that the same preformed pieces are symmetrically welded/temporarily welded on two sides of a reinforcing plate (2) to form an intermediate configuration, the intermediate configuration comprises two symmetrical triangular structures, the rigidity of the whole structure is improved, and the respective quenching stress is mutually counteracted, so that the purpose of reducing heat treatment deformation is achieved; after the whole body is subjected to heat treatment, separating and processing to obtain a final part;
the pre-forming piece comprises a first pre-forming piece (1) and a second pre-forming piece (3), and the first pre-forming piece and the second pre-forming piece are obtained by bending a square plate according to the actual bending angle of the part; the edges of the first preformed piece (1) and the second preformed piece (3) opposite to the opening are welding/temporary welding edges, and the size of the welding/temporary welding edges is more than 5mm than the maximum outline size of the part; the size of the reinforcing plate (2) is larger than the opening size of the first preformed piece (1) and the second preformed piece (3); the weld/tack spot is removed during separation.
2. The method for reducing the heat treatment deformation of the sheet metal type angle part according to claim 1, characterized in that: the size of the welding/temporary welding edge is 8mm larger than the maximum external dimension of the part.
3. The method for reducing the heat treatment deformation of the sheet metal type angle part according to claim 1, characterized in that: the size of the welding/temporary welding edge is 10mm larger than the maximum external dimension of the part.
4. The method for reducing the heat treatment deformation of the sheet metal type angle part according to claim 1, characterized in that: and respectively processing the separated first preform (1) and the second preform (3) into the shapes of parts and correcting the shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501231.3A CN110306031B (en) | 2019-06-11 | 2019-06-11 | Method for reducing heat treatment deformation of sheet metal type angle part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501231.3A CN110306031B (en) | 2019-06-11 | 2019-06-11 | Method for reducing heat treatment deformation of sheet metal type angle part |
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| Publication Number | Publication Date |
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| CN110306031A CN110306031A (en) | 2019-10-08 |
| CN110306031B true CN110306031B (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910501231.3A Active CN110306031B (en) | 2019-06-11 | 2019-06-11 | Method for reducing heat treatment deformation of sheet metal type angle part |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB793364A (en) * | 1954-12-01 | 1958-04-16 | Ici Ltd | Method of making sheet metal elements with expanded passages therein |
| JPH08120658A (en) * | 1994-07-19 | 1996-05-14 | Technip Geoprod Sa | Assembling method of long-sized section of boom of saddle support for platform for petroleum excavation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059466A (en) * | 2010-12-13 | 2011-05-18 | 天津工程机械研究院 | Machining method for preventing welding deformation of plate-type metallic workpieces |
| CN102672435A (en) * | 2012-05-28 | 2012-09-19 | 北京航星机器制造公司 | Integral forming method for thin-walled titanium alloy part with irregularly-shaped curved surface and die |
| CN104213059B (en) * | 2014-06-27 | 2016-08-03 | 中航飞机股份有限公司西安飞机分公司 | Titanium alloy bilayer curved surface wing plate part method for controlling heat treatment deformation |
| CN104439977A (en) * | 2014-12-03 | 2015-03-25 | 北京航星机器制造有限公司 | Rapid manufacturing method of symmetric apron board type casting aluminum alloy parts |
| CN108588358B (en) * | 2018-05-23 | 2020-03-27 | 山东南山铝业股份有限公司 | Forced aluminum alloy shaping device and aluminum alloy heat treatment method |
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2019
- 2019-06-11 CN CN201910501231.3A patent/CN110306031B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB793364A (en) * | 1954-12-01 | 1958-04-16 | Ici Ltd | Method of making sheet metal elements with expanded passages therein |
| JPH08120658A (en) * | 1994-07-19 | 1996-05-14 | Technip Geoprod Sa | Assembling method of long-sized section of boom of saddle support for platform for petroleum excavation |
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| CN110306031A (en) | 2019-10-08 |
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