CN103146903B - Finishing method of hollow circular ring member - Google Patents
Finishing method of hollow circular ring member Download PDFInfo
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- CN103146903B CN103146903B CN201110401353.9A CN201110401353A CN103146903B CN 103146903 B CN103146903 B CN 103146903B CN 201110401353 A CN201110401353 A CN 201110401353A CN 103146903 B CN103146903 B CN 103146903B
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Abstract
The invention discloses a finishing method of a hollow circular ring member, belonging to the technical field of finishing. The method comprises performing a die loading process for a cold-processed hollow circular ring member, putting a heat treatment tool with the hollow circular ring member into a heat treatment furnace for annealing, cooling to a room temperature, opening the heat treatment tool and removing the hollow circular ring member. The method solves problems that destressing dimensional accuracy cannot meet processing requirements if the hollow circular ring member is subjected to heat treatment after cold forming, thereby ensuring that destressing and geometric dimension of the hollow circular ring member can meet design requirements, and improving qualified rate of products.
Description
Technical field
The invention belongs to finishing technical field, particularly a kind of finely finishing method of open circles ring.
Background technology
Due to some particular requirements to structural part shape, open circles ring is widely used in the fields such as Aeronautics and Astronautics, naval vessel, automobile, but because of features such as its thin-walled, manufacturing procedure are complicated, amount of finish is large, the course of processing easily produces larger stress.In the course of processing, due to factors such as extruding, rolling, drawing and bendings, cause piece surface to produce tensile stress or stress.In long-term placement or use procedure, stress discharges gradually, part generation buckling deformation, and machining deformation and dimensional precision become one of key issue of restriction open circles ring production.
It is cold-formed that traditional open circles ring adopts more, then heat-treats, and eliminates internal stress stable dimensions, though can eliminate stress, solves the problem of machining deformation in the long-term placement of part or use procedure, to parts size precision, requires to improve little.Therefore traditional open circles ring moulding and the method that eliminates stress can not meet the processing request of some high precision open circles rings.
Summary of the invention
The object of the invention is: the finely finishing method that proposes a kind of open circles ring, after cold-formed with solution open circles ring, heat-treat again the difficult problem that destressing dimensional precision cannot meet processing request, destressing and the geometrical dimension of guaranteeing open circles ring can meet design requirement, and improve working (machining) efficiency and the qualification rate of open circles ring.
The finely finishing method that the invention provides a kind of open circles ring, is characterized in that, the step of finishing is as follows:
(1) cold working open circles ring being filled to mould processes: pending open circles ring is carried out to surface cleaning, guarantee that open circles ring surface is without spot, heat treatment tooling is combined by upper die and lower die, the circular profile that heat treatment tooling upper die and lower die die face is same size, counterdie is with the annulus die cavity of several different diameters, annulus height is design requirements part height, annulus width is design requirements part width, circle diameter is design requirements diameter of part, the open circles ring of different diameter is packed in the die cavity in heat treatment tooling counterdie, and will on heat treatment tooling upper mould cover, overlap with heat treatment tooling counterdie,
(2) finishing thermal treatment: the heat treatment tooling that open circles ring is housed is put into the heat treatment furnace thermal treatment of annealing;
(3) be cooled to room temperature;
(4) open heat treatment tooling, take out open circles ring.
The present invention gives the preferred concrete steps of annealing thermal treatment in step (2), as follows:
(1) in heat treatment tooling upper and lower surface, respectively place a thermopair;
(2) locking fire door, preparation heats up;
(3) temperature rise rate with 10～15 ℃/min is warming up to annealing temperature by heat treatment tooling, and insulation.
In step (2), heat-treatment of annealing temperature and annealing time are depending on material.
Depending on material, determine the processing parameters such as heat treated holding temperature, soaking time, be conducive to improve stability, the annulus part dimensional precision of tissue and reduce unrelieved stress.
Step (3), can stove mode cold or air cooling be cooled to room temperature by heat treatment tooling, depending on material and heat treatment requirements.
Advantage of the present invention is: adopt method of the present invention can reduce manufacturing cost, improve dimensional stability and precision.Solved open circles ring and heat-treated again the difficult problem that destressing dimensional precision cannot meet processing request after cold-formed, guaranteed that the destressing of open circles ring and geometrical dimension can meet design requirement, and have improved the conforming product rate of open circles ring.Experiment showed, that conforming product rate of the present invention 0 brings up to more than 90% from being almost of traditional thermal treatment method for removing stress.
Accompanying drawing explanation
Heat treatment tooling counterdie schematic diagram in Fig. 1 embodiment of the present invention 1;
Fig. 2 embodiment of the present invention 1 open circles ring thermal treatment process schematic diagram;
Fig. 3 embodiment of the present invention 1 hollow core annulus part finished product schematic diagram; Wherein, (a) being annulus part vertical view, is (b) Box Section figure;
Heat treatment tooling counterdie schematic diagram in Fig. 4 embodiment of the present invention 2;
Fig. 5 embodiment of the present invention 2 open circles ring thermal treatment process schematic diagram;
Fig. 6 embodiment of the present invention 2 hollow core annulus part finished product schematic diagram wherein, are (a) that annulus part vertical view (b) is circular hollow section figure.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation, so that those skilled in the art is more fully understood the present invention, but do not limit the present invention in any way.
A finely finishing method for open circles ring, the step of finishing is as follows:
1 pair of cold working open circles ring fills mould and processes: pending open circles ring is carried out to surface cleaning, guarantee that open circles ring surface is without spot, heat treatment tooling is combined by upper die and lower die, the circular profile that heat treatment tooling upper die and lower die die face is same size, counterdie is with the annulus die cavity of several different diameters, annulus height is design requirements part height, annulus width is design requirements part width, circle diameter is design requirements diameter of part, open circles ring is packed in the die cavity in heat treatment tooling counterdie, and will on heat treatment tooling upper mould cover, overlap with heat treatment tooling counterdie.
2 finishing thermal treatments: heat treatment tooling is put into the heat treatment furnace thermal treatment of annealing, and step is as follows:
2.1 respectively place a thermopair in heat treatment tooling upper and lower surface;
2.2 locking fire doors, preparation heats up;
2.3 heat up, and with the speed of 10～15 ℃/min, heat treatment tooling temperature are warming up to annealing temperature, insulation certain hour;
2.4 turn off heat treatment furnace, carry out cooling preparation;
2.5 is cooling, and mode cold with stove or air cooling is cooled to room temperature by heat treatment tooling, depending on material and heat treatment requirements;
2.6 open heat treatment tooling, take out open circles ring.
The present invention is applicable to dimensional stabilizing and the finishing treatment process of the open circles ring of high-precision requirement.
Embodiment 1
A kind of open circles ring of the present embodiment, cross section is square, and its material is 5A02 aluminium alloy, is a kind of rust-preventing aluminum alloy, and state is semi-finishing state annulus part.Complete after semi-finishing, need process the destressing of annulus part and finishing, eliminate unrelieved stress and size is carried out to finishing stabilization treatment.The design requirements of part is that wall thickness is 3.3mm, and sectional dimension is 14.1mm*14.1mm, and circle diameter requires as 130mm, 100mm, 70mm, be ± 0.1mm of size tolerance requirements.Whole finishing all carries out in heat treatment tooling, and as shown in Figure 1, thermal treatment process as shown in Figure 2 for heat treatment tooling counterdie.
Concrete process steps is as follows:
1.1 pairs of cold working open circles rings fill mould and process: the open circles ring to three pending different diameters is carried out surface cleaning, guarantee that hollow aluminium alloy annulus part surface is without spot, then the open circles ring of three different diameters is respectively charged in the heat treatment tooling counterdie annulus die cavity of corresponding diameter, and will on heat treatment tooling upper mould cover, overlaps with heat treatment tooling counterdie.
1.2 pack heat treatment tooling in box resistance heat treatment furnace into, in heat treatment tooling upper and lower surface, respectively place a thermopair;
1.3 locking fire doors, preparation heats up;
1.4 heat up, and with the speed of 10 ℃/min, heat treatment tooling temperature are warming up to 160 ℃, insulation 100min;
1.5 turn off heat treatment furnace, carry out cooling preparation;
1.6 open fire door, cooling, in the mode of air cooling, heat treatment tooling are cooled to room temperature;
1.7 open heat treatment tooling, take out open circles ring.
As shown in Figure 3, product is qualified for 1.8 processed finished products parts.
Embodiment 2
A kind of open circles ring of the present embodiment, cross section is circular, and its material is TC4, is a kind of alpha+beta titanium alloys, and state is semi-finishing state annulus part.Complete after semi-finishing, need process the destressing of annulus part and finishing, eliminate unrelieved stress and size is carried out to finishing stabilization treatment.The design requirements of part is that wall thickness is 3.1mm, and sectional dimension is Φ 14.2mm, and circle diameter requires as 130mm, 100mm, be ± 0.1mm of size tolerance requirements.Whole finishing heat treatment process is all carried out in heat treatment tooling, and as shown in Figure 4, thermal treatment process as shown in Figure 5 for heat treatment tooling counterdie.
Concrete process steps is as follows:
2.1 pairs of cold working open circles rings fill mould and process: the open circles ring to two pending different diameters is carried out surface cleaning, guarantee that open circles ring surface is without spot, then the open circles ring of two different diameters is respectively charged in the heat treatment tooling counterdie annulus die cavity of corresponding diameter, and will on heat treatment tooling upper mould cover, overlaps with heat treatment tooling counterdie.
2.2 pack heat treatment tooling in vacuum heat treatment furnace into, in heat treatment tooling upper and lower surface, respectively place a thermopair;
2.3 locking fire doors, vacuumize, and in stove, vacuum is evacuated to 6 * 10
-2pa;
2.4 heat up, and with the speed of 15 ℃/min, heat treatment tooling temperature are warming up to 600 ℃, insulation 80min;
2.5 turn off heat treatment furnace, carry out cooling preparation;
2.6 open fire door, in the mode of air cooling, heat treatment tooling are cooled to room temperature;
2.7 open heat treatment tooling, take out open circles ring.
As shown in Figure 6, product is qualified for 2.8 processed finished products parts.
The above; be only the present invention's embodiment preferably, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (4)
1. a finely finishing method for open circles ring, is characterized in that, the step of the method is as follows:
(1) cold working open circles ring being filled to mould processes: pending open circles ring is carried out to surface cleaning, guarantee that open circles ring surface is without spot, heat treatment tooling is combined by upper die and lower die, the circular profile that heat treatment tooling upper die and lower die die face is same size, counterdie is with the annulus die cavity of several different diameters, annulus height is design requirements part height, annulus width is design requirements part width, circle diameter is design requirements diameter of part, the open circles ring of different diameter is packed in the die cavity in heat treatment tooling counterdie, and will on heat treatment tooling upper mould cover, overlap with heat treatment tooling counterdie,
(2) finishing thermal treatment: the heat treatment tooling that open circles ring is housed is put into the heat treatment furnace thermal treatment of annealing; Wherein, the heat treated concrete steps of annealing are as follows:
In heat treatment tooling upper and lower surface, respectively place a thermopair;
Locking fire door, preparation heats up;
Temperature rise rate with 10～15 ℃/min is warming up to annealing temperature by heat treatment tooling, and insulation;
(3) be cooled to room temperature;
(4) open heat treatment tooling, take out open circles ring.
2. finely finishing method according to claim 1, is characterized in that: in step (2), heat-treatment of annealing temperature is depending on material.
3. finely finishing method according to claim 1, is characterized in that: in step (2), the heat-treatment of annealing time is depending on material.
4. finely finishing method according to claim 1, is characterized in that: in step (3), mode cold with stove or air cooling is cooled to room temperature by heat treatment tooling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110401353.9A CN103146903B (en) | 2011-12-06 | 2011-12-06 | Finishing method of hollow circular ring member |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110401353.9A CN103146903B (en) | 2011-12-06 | 2011-12-06 | Finishing method of hollow circular ring member |
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| CN103146903A CN103146903A (en) | 2013-06-12 |
| CN103146903B true CN103146903B (en) | 2014-08-27 |
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| CN111760981A (en) * | 2020-07-07 | 2020-10-13 | 宜兴市启晖磁业科技有限公司 | Bonded magnet ring shaping method, shaping device and bonded magnet ring prepared by method |
| CN113305234B (en) * | 2021-04-29 | 2023-01-17 | 杭州临安培富机车部件有限公司 | Method for finishing circle for producing sliding bearing bush |
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| CN101353716B (en) * | 2007-07-24 | 2010-09-15 | 中煤张家口煤矿机械有限责任公司 | Novel mining single ring tempering method |
| CN101264564A (en) * | 2008-05-08 | 2008-09-17 | 谢鸿刚 | Manufacturing method for quick-release type hoisting connection ring body |
| CN101684519B (en) * | 2009-06-29 | 2011-05-04 | 洛阳Lyc轴承有限公司 | Method for improving heat treatment deformation of thin-wall light narrow series bearing ring |
| CN101775480B (en) * | 2010-03-01 | 2011-07-13 | 洛阳轴研科技股份有限公司 | Control method for preventing deformation in quenching process of 9Cr18 thin-wall bearing ring |
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Effective date of registration: 20190226 Address after: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: Research Institute of engineering and Technology Co., Ltd. Address before: No. 2, Xinjie street, Xicheng District, Beijing, Beijing Patentee before: General Research Institute for Nonferrous Metals |
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