CN114959228A - Anti-deformation method for V-shaped belt plate part through heat treatment - Google Patents
Anti-deformation method for V-shaped belt plate part through heat treatment Download PDFInfo
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- CN114959228A CN114959228A CN202210616815.7A CN202210616815A CN114959228A CN 114959228 A CN114959228 A CN 114959228A CN 202210616815 A CN202210616815 A CN 202210616815A CN 114959228 A CN114959228 A CN 114959228A
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- heat treatment
- plate part
- belt plate
- shaped belt
- base
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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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- 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
- C21D1/26—Methods of annealing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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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 Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention belongs to the technical field of deformation prevention of machined parts during heat treatment, and relates to a deformation prevention method for V-shaped belt plate parts during heat treatment. The invention can solve the problems of deformation and safety of the V-shaped belt plate part in heat treatment, and the deformation of the V-shaped belt plate part in the heat treatment can be reduced by the method. The heat treatment fixture has the advantages of simple and practical structure, accurate positioning, firm clamping, easy processing and manufacturing, safe and reliable use by an operator, low labor intensity of the operator for clamping parts, small deformation of the parts after heat treatment, and meeting the requirements of the sizes of all parts.
Description
Technical Field
The invention belongs to the technical field of deformation prevention of machined parts during heat treatment, and relates to a deformation prevention method for V-shaped belt plate parts during heat treatment.
Background
Fig. 1 shows a V-belt plate component according to the invention, which in practice is designed to be symmetrical from side to side. The V-shaped belt plate part is made of TC21 material, has the length of 885mm, the width of 660mm and the thickness of 60mm, and consists of a web plate, a head lug and a hole, and the part is required to be deformed little after heat treatment, so that the flatness of the web plate on the left side and the right side is ensured. At present, the parts are generally placed on a bottom plate of a heat treatment furnace or in a charging basket in a free placement mode for heat treatment, the deformation of the heat treatment is large due to the fact that a large amount of machining stress is released in the heat treatment process, the flatness of a web plate cannot be guaranteed, the web plate is subjected to level difference in the assembling process with other parts, the rejection rate is high, and potential safety hazards exist in the heat treatment process.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for preventing the deformation of a V-shaped belt plate part during heat treatment, which ensures that the shape of the part is effectively controlled during the heat treatment processing process by carrying out heat treatment in different processes and positioning, fixing and clamping by using a heat treatment clamp. The technical problems that parts are directly placed in a heat treatment furnace and the size and position requirements of each part after heat treatment cannot be guaranteed in the prior art are solved.
The purpose of the invention is realized by the following technical scheme:
a V-shaped belt plate part heat treatment anti-deformation method comprises the following steps:
the first step is as follows: cleaning fixture and parts
The parts and heat treatment fixture were scrubbed with alcohol soaked white cotton cloth until the traces of oil, emulsion and other dirt were completely removed, and no traces of contamination were left on the wiped white cotton cloth.
The second step is that: bolt and wedge block on disassembling clamp
The third step: mounting the V-shaped belt plate part on a heat treatment fixture
As shown in fig. 2 and 3, the V-shaped strip plate part is placed on the base, the head lug of the V-shaped strip plate part is placed on the bracket, and the positioning is performed by using the positioning latch.
And (3) penetrating the head hole of the V-shaped belt plate part through the support column, placing the circular pressing plate on the V-shaped belt plate part, and placing a wedge iron on the support column for fixing.
The pressing plate is placed on the V-shaped belt plate part, and a wedge iron is placed to clamp and fix the part as shown in figure 5.
Repeating the above operation, and installing the symmetrical part of the V-shaped belt plate part on the other surface of the tool.
The fourth step: after the device is installed, a clearance between the V-shaped belt plate part and the base is measured by using the feeler gauge, and the clearance is ensured to be less than 0.1 mm.
And a clearance between the V-shaped belt plate part and the base is measured by using the feeler gauge, so that the clearance is ensured to be less than 0.1 mm.
The fifth step: and placing the V-shaped belt plate part which is firmly clamped and the heat treatment fixture into a vacuum furnace together for heat treatment.
The stress relief annealing is annealing performed at a temperature lower than the recrystallization temperature. The method aims to eliminate the internal stress formed by machining, stamping, welding and the like of a workpiece, stabilize the size of the part and meet the assembly requirement.
Annealing is carried out in the environment of lower than one atmosphere pressure, so that the part has certain surface brightness while being annealed.
The specific operation is as follows:
5.1: and (3) stably placing the firmly clamped V-shaped part and the heat treatment fixture into a horizontal vacuum furnace at room temperature, heating to 450 ℃ along with the furnace, and preserving heat for 30 min.
5.2: and (3) placing the heat treatment clamp with the mounted parts in a vacuum furnace for heat treatment, and vacuumizing the vacuum furnace to less than or equal to 6.6 multiplied by 10 < -2 > Pa.
5.3: continuously heating to 530-560 ℃, and keeping the temperature for 90-240 min.
5.4: and (3) furnace cooling or introducing argon to below 100 ℃, discharging and air cooling, and unloading the parts when the temperature is below 50 ℃.
The heat treatment fixture is shown in figure 2 and comprises a base, a support, a positioning bolt, a circular pressing plate, a support column, a wedge, a pressing plate, a lifting lug and a clamping support column.
The heat treatment fixture is designed to be symmetrical on two sides, a support is arranged on the base, and the positioning bolt is used for positioning lug holes in the head of the V-shaped belt plate part. The base is a large-area plane, and in order to reduce the weight of the tool, a weight-reducing fabrication hole is designed on the base. For the frock hoist and mount removal convenience, 2 lugs are designed above the base, make things convenient for the frock hoist and mount to remove. The V-shaped belt plate part is characterized in that a hole of the head part penetrates through a support column, the circular pressing plate is placed on the V-shaped belt plate part, and the support column is fixed through a wedge iron.
The invention has the advantages that:
the invention can solve the problems of deformation and safety of the V-shaped belt plate part in heat treatment, and the deformation of the V-shaped belt plate part in the heat treatment can be reduced by the method. The heat treatment fixture has the advantages of simple and practical structure, accurate positioning, firm clamping, easy processing and manufacturing, safe and reliable use by an operator, low labor intensity of the operator for clamping parts, small deformation of the parts after heat treatment, and meeting the requirements of the sizes of all parts.
Drawings
FIG. 1 is a schematic view of a V-belt plate component;
FIG. 2 is a schematic view of a method for solving deformation of a V-belt plate part by heat treatment;
FIG. 3 is a perspective view of a heat treatment deformation method for a V-belt plate part;
FIG. 4 is a cross-sectional view A-A of a heat treatment deformation process of a V-belt plate part;
FIG. 5 is a schematic view B-B of the heat treatment deformation process of the V-shaped belt plate part.
Reference numerals: 1, a base; 2, a bracket; 3, positioning a bolt; 4, a circular pressing plate; 5 a support post; 6, wedge iron; 7, pressing a plate; 8, lifting lugs; 10 grip the stanchion.
Detailed Description
The invention will now be further described with reference to the accompanying drawings
A V-shaped belt plate part heat treatment anti-deformation method comprises the following steps:
the first step is as follows: cleaning fixture and parts
The parts and heat treatment fixture were scrubbed with alcohol soaked white cotton cloth until the traces of oil stain, emulsion and other dirt were completely removed, and no traces of contamination should be left on the white cotton cloth after scrubbing.
The second step is that: disassembling inserted pin and wedge block on clamp
The third step: mounting the V-shaped belt plate part on a heat treatment fixture
As shown in fig. 2 and 3, the V-shaped band plate 9 is placed on the base 1, the head lug of the V-shaped band plate 9 is placed on the bracket 2, and the positioning is performed by the positioning pin 3.
The head hole of the V-shaped belt plate part 9 penetrates through the support post 5, the circular pressing plate 4 is placed on the V-shaped belt plate part 9, and the wedge 6 is placed on the support post 5 for fixing.
The pressing plate 7 is placed on the V-shaped belt plate part 9, and the wedge 6 is placed to clamp and fix the part as shown in figure 5.
Repeating the above operation, and installing the symmetrical piece of the V-shaped belt plate part 9 on the other surface of the tool.
The fourth step: after the device is installed, a clearance between the V-shaped belt plate part 9 and the base 1 is measured by using a feeler gauge, and the clearance is ensured to be less than 0.1 mm.
The clearance between the V-shaped belt plate part 9 and the base 1 is measured by using a feeler gauge, and the clearance is ensured to be less than 0.1 mm.
The fifth step: and placing the V-shaped belt plate part 9 which is firmly clamped and the heat treatment fixture into a vacuum furnace together for heat treatment.
5.1: and (3) stably placing the firmly clamped V-shaped part and the heat treatment fixture into a horizontal vacuum furnace at room temperature, heating to 450 ℃ along with the furnace, and preserving heat for 30 min.
5.2: and (3) placing the heat treatment clamp with the mounted parts in a vacuum furnace for heat treatment, and vacuumizing the vacuum furnace to less than or equal to 6.6 multiplied by 10 < -2 > Pa.
5.3: continuously heating to 530-560 ℃, and preserving the heat for 90-240 min.
5.4: and (3) furnace cooling or introducing argon to below 100 ℃, discharging and air cooling, and unloading the parts when the temperature is below 50 ℃.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (3)
1. A V-shaped belt plate part heat treatment anti-deformation method is characterized by comprising the following steps:
the first step is as follows: cleaning fixture and parts
Scrubbing parts and a heat treatment fixture by white cotton cloth soaked by alcohol until traces of oil stains, emulsion and other dirt are completely removed, wherein the white cotton cloth after being scrubbed is free from traces of pollution;
the second step is that: bolt and wedge block on disassembling clamp
The third step: mounting the V-shaped belt plate part on a heat treatment fixture
The V-shaped belt plate part (9) is placed on the base (1), the lug at the head of the V-shaped belt plate part (9) is placed on the bracket (2), and the positioning is carried out by using the positioning bolt (3);
the head hole of the V-shaped belt plate part (9) penetrates through the support column (5), the circular pressing plate (4) is placed on the V-shaped belt plate part (9), and a wedge iron (6) is placed on the support column (5) for fixing;
placing a pressing plate (7) on a V-shaped belt plate part (9), and placing a wedge iron (6) to clamp and fix the part;
repeating the operation above, and installing a symmetrical piece of a V-shaped belt plate part (9) on the other surface of the tool;
the fourth step: after the device is installed, a clearance between the V-shaped belt plate part (9) and the base (1) is measured by using a feeler gauge, and the clearance is ensured to be less than 0.1 mm;
measuring the gap between the V-shaped belt plate part (9) and the base (1) by using a clearance gauge, and ensuring that the gap is less than 0.1 mm;
the fifth step: placing the V-shaped belt plate part (9) which is firmly clamped and the heat treatment clamp into a vacuum furnace together for heat treatment;
the stress relief annealing is annealing performed at a temperature lower than the recrystallization temperature; the method aims to eliminate the internal stress formed by machining, stamping, welding and the like of a workpiece, stabilize the size of the part and meet the assembly requirement;
annealing is carried out in an environment of lower than one atmospheric pressure, so that the surface of the part has certain brightness while annealing.
2. A method for preventing deformation of a V-belt plate part by heat treatment according to claim 1, characterized by the steps of:
in the fifth step, the specific operations are as follows:
5.1: stably placing the firmly clamped V-shaped part and the heat treatment fixture into a horizontal vacuum furnace at room temperature, heating to 450 ℃ along with the furnace, and preserving heat for 30 min;
5.2: placing the heat treatment clamp with the mounted parts in a vacuum furnace for heat treatment, and vacuumizing the vacuum furnace to less than or equal to 6.6 multiplied by 10 < -2 > Pa;
5.3: continuously heating to 530-560 ℃, and preserving the heat for 90-240 min;
5.4: and (3) furnace cooling or introducing argon to below 100 ℃, discharging and air cooling, and unloading the parts when the temperature is below 50 ℃.
3. A method for preventing deformation of a V-belt plate part by heat treatment according to claim 1 or 2, characterized by the steps of:
the heat treatment clamp comprises a base (1), a support (2), a positioning bolt (3), a circular pressing plate (4), a support pillar (5), a wedge (6), a pressing plate (7), a lifting lug (8) and a clamping support pillar (10);
the heat treatment fixture is designed symmetrically on two sides, a support (2) is arranged on the base (1), and a positioning bolt (3) is used for positioning lug holes at the head of the V-shaped belt plate part; the base (1) is a large-area plane, and in order to reduce the weight of the tool, a weight-reducing fabrication hole is designed on the base (1); in order to facilitate the hoisting and moving of the tool, 2 lifting lugs (8) are designed above the base (1) to facilitate the hoisting and moving of the tool; the V-shaped belt plate part (9) is characterized in that a head hole penetrating part hole penetrates through the supporting column (5), the circular pressing plate (4) is placed on the V-shaped belt plate part (9), and the supporting column (5) is fixed through the wedge iron (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210616815.7A CN114959228A (en) | 2022-06-01 | 2022-06-01 | Anti-deformation method for V-shaped belt plate part through heat treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210616815.7A CN114959228A (en) | 2022-06-01 | 2022-06-01 | Anti-deformation method for V-shaped belt plate part through heat treatment |
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| Publication Number | Publication Date |
|---|---|
| CN114959228A true CN114959228A (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210616815.7A Pending CN114959228A (en) | 2022-06-01 | 2022-06-01 | Anti-deformation method for V-shaped belt plate part through heat treatment |
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| CN (1) | CN114959228A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2155235C1 (en) * | 1999-03-24 | 2000-08-27 | Комсомольское-на-Амуре авиационное производственное объединение | Apparatus for thermal stabilizing of sheet parts |
| CN104109747A (en) * | 2014-06-27 | 2014-10-22 | 中航飞机股份有限公司西安飞机分公司 | Control method and control fixture for heat treatment distortion of airplane lower edge strip component |
| CN105274285A (en) * | 2015-12-07 | 2016-01-27 | 沈阳飞机工业（集团）有限公司 | Heat treatment anti-deformation jig for boot-shape welded part and using method thereof |
| CN110331269A (en) * | 2019-08-07 | 2019-10-15 | 沈阳飞机工业（集团）有限公司 | A kind of machine adds frame parts heat treatment control clamp and clamping method |
| CN110331270A (en) * | 2019-08-07 | 2019-10-15 | 沈阳飞机工业（集团）有限公司 | A kind of lath part heat treatment control clamp and clamping method |
| CN212655837U (en) * | 2019-12-05 | 2021-03-05 | 江西洪都航空工业集团有限责任公司 | TA15 titanium alloy middle and lower beam part stress relief annealing clamp |
| CN113510167A (en) * | 2021-04-19 | 2021-10-19 | 北京航空航天大学 | Multi-pass thermal shape correction tool and method for Y-shaped large-section titanium alloy curved frame |
-
2022
- 2022-06-01 CN CN202210616815.7A patent/CN114959228A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2155235C1 (en) * | 1999-03-24 | 2000-08-27 | Комсомольское-на-Амуре авиационное производственное объединение | Apparatus for thermal stabilizing of sheet parts |
| CN104109747A (en) * | 2014-06-27 | 2014-10-22 | 中航飞机股份有限公司西安飞机分公司 | Control method and control fixture for heat treatment distortion of airplane lower edge strip component |
| CN105274285A (en) * | 2015-12-07 | 2016-01-27 | 沈阳飞机工业（集团）有限公司 | Heat treatment anti-deformation jig for boot-shape welded part and using method thereof |
| CN110331269A (en) * | 2019-08-07 | 2019-10-15 | 沈阳飞机工业（集团）有限公司 | A kind of machine adds frame parts heat treatment control clamp and clamping method |
| CN110331270A (en) * | 2019-08-07 | 2019-10-15 | 沈阳飞机工业（集团）有限公司 | A kind of lath part heat treatment control clamp and clamping method |
| CN212655837U (en) * | 2019-12-05 | 2021-03-05 | 江西洪都航空工业集团有限责任公司 | TA15 titanium alloy middle and lower beam part stress relief annealing clamp |
| CN113510167A (en) * | 2021-04-19 | 2021-10-19 | 北京航空航天大学 | Multi-pass thermal shape correction tool and method for Y-shaped large-section titanium alloy curved frame |
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