CN111256022A - Large thin-wall part with complex shape and manufacturing process thereof - Google Patents
Large thin-wall part with complex shape and manufacturing process thereof Download PDFInfo
- Publication number
- CN111256022A CN111256022A CN202010044401.2A CN202010044401A CN111256022A CN 111256022 A CN111256022 A CN 111256022A CN 202010044401 A CN202010044401 A CN 202010044401A CN 111256022 A CN111256022 A CN 111256022A
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- China
- Prior art keywords
- thin
- wall part
- hollow pipe
- walled
- part body
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000009987 spinning Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims description 21
- 239000011265 semifinished product Substances 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
- F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a large thin-wall part with a complex shape and a manufacturing process thereof, and relates to the technical field of production and processing of large thin-wall parts with complex shapes. The invention adopts the integral spinning forming process to obtain the large thin-wall part with the complex shape, and the manufacturing time is greatly reduced; the head part is fixed in the spinning process, the spinning machine acts on the outer surface of the hollow pipe all the time, the length of the hollow pipe cannot be increased, and the size precision of the finally obtained product is high; the spinning forming process has fewer steps and saves the manufacturing cost.
Description
Technical Field
The invention relates to the technical field of production and processing of large thin-walled parts with complex shapes, in particular to a large thin-walled part with a complex shape and a manufacturing process thereof.
Background
At present, the requirement on the precision of a large thin-wall part with a complex shape is high, the forging is extremely difficult, a solid iron column is generally utilized to be hollowed from inside and slowly drawn to be thin, the precision is required to be high, so that the large thin-wall part can be operated only a little by a little, and the precision is difficult to master when the large thin-wall part goes to the head direction, so that the manufacturing progress of the large thin-wall part is slow; the large thin-wall part is wide at the back and narrow at the front, so that the shell wall is gradually thinned and advanced during the forging process, the final thickness reaches the requirement, but the length has large deviation.
Disclosure of Invention
The present invention is directed to solving the above problems and providing a large thin-walled member having a complicated shape and a process for manufacturing the same.
The invention realizes the purpose through the following technical scheme:
the large thin-wall part with the complex shape comprises a thin-wall part body, wherein one end of the thin-wall part body is provided with a head, the other end of the thin-wall part body is provided with a tail, and a cavity is formed in the thin-wall part body.
Preferably, the head portion has a thickness greater than a thickness of the tail portion.
Preferably, the head portion has a smaller diameter than the tail portion.
A manufacturing process of a large thin-walled part with a complex shape, which comprises the following steps:
(1) screening, and selecting hollow pipes meeting the requirements;
(2) blanking, namely cutting a hollow pipe with a fixed length according to requirements;
(3) heating treatment, namely putting the hollow pipe into a heating furnace for heating;
(4) spinning forming, namely fixing one end of the hollow pipe, which is planned to be the head, on a spinning machine, spinning by the spinning machine from one end of the hollow pipe, which is not planned to be the tail, wherein the spinning machine is always used on the outer surface of the hollow pipe, the length of the hollow pipe cannot be increased, and spinning by the spinning machine to two ends of the hollow pipe with different thicknesses to obtain a semi-finished product of a thin-wall part body;
(5) isothermal normalizing, namely putting the semi-finished product of the thin-wall part body into a normalizing furnace for heating, then carrying out heat preservation treatment, and finally cooling to normal temperature;
(6) performing rust prevention treatment, packaging and warehousing, performing rust prevention treatment on the cooled semi-finished product of the thin-walled part body to obtain a finished product of the thin-walled part body, and packaging and warehousing the finished product.
Preferably, the heating temperature in the step (3) is 650-680 ℃, and the heating time is 12-16 minutes.
Preferably, the heating temperature in the step (5) is 1020-1050 ℃.
Preferably, the heat preservation temperature in the step (5) is 1020-1050 ℃, and the heat preservation time is 35-42 minutes.
The invention has the beneficial effects that: the invention adopts the integral spinning forming process to obtain the large thin-wall part with the complex shape, and the manufacturing time is greatly reduced; the head part is fixed in the spinning process, the spinning machine acts on the outer surface of the hollow pipe all the time, the length of the hollow pipe cannot be increased, and the size precision of the finally obtained product is high; the spinning forming process has fewer steps and saves the manufacturing cost.
Drawings
Fig. 1 is a front view of the present invention.
Wherein: 1. a head portion; 2. a thin-walled article body; 3. a cavity; 4. and a tail portion.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, the large thin-wall part with a complex shape comprises a thin-wall part body 2, wherein one end of the thin-wall part body 2 is provided with a head part 1, the other end of the thin-wall part body 2 is provided with a tail part 4, and a cavity 3 is arranged in the thin-wall part body 2. The head portion 1 is thicker than the tail portion 4. The diameter of the head portion 1 is smaller than the diameter of the tail portion 4.
A manufacturing process of a large thin-walled part with a complex shape, which comprises the following steps: (1) screening and selecting hollow tubes meeting the requirements. (2) Blanking, and cutting out the hollow pipe with fixed length according to the requirement. (3) And (3) heating, namely putting the hollow pipe into a heating furnace for heating, wherein the heating temperature is 650-680 ℃, and the heating time is 12-16 minutes. (4) And (3) spinning and forming, namely fixing one end of the hollow pipe, which is planned to be the head, on a spinning machine, spinning by using the spinning machine from one end of the hollow pipe, which is not planned to be the tail, as the spinning machine acts on the outer surface of the hollow pipe all the time, the length of the hollow pipe cannot be increased, and spinning by using the spinning machine to perform spinning with different thicknesses on the two ends of the hollow pipe to obtain a semi-finished product of the thin-wall part body. (5) And (3) isothermal normalizing treatment, namely putting the semi-finished product of the thin-wall part body into a normalizing furnace for heating at the heating temperature of 1020-1050 ℃, then performing heat preservation treatment at the heat preservation temperature of 1020-1050 ℃ for 35-42 minutes, and finally cooling to the normal temperature. (6) Performing rust prevention treatment, packaging and warehousing, performing rust prevention treatment on the cooled semi-finished product of the thin-walled part body to obtain a finished product of the thin-walled part body, and packaging and warehousing the finished product.
The above are only preferred embodiments of the present invention, and do not limit the scope of the claims of the present invention. Those skilled in the art will appreciate that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention. The scope of the invention is defined by the claims and their equivalents.
Claims (7)
1. A large thin-walled part with a complex shape is characterized in that: the thin-wall part comprises a thin-wall part body, wherein a head is arranged at one end of the thin-wall part body, a tail is arranged at the other end of the thin-wall part body, and a cavity is formed in the thin-wall part body.
2. A large, complex-shaped, thin-walled part according to claim 1, characterized in that: the head portion has a thickness greater than a thickness of the tail portion.
3. A large, complex-shaped, thin-walled part according to claim 1, characterized in that: the head portion has a diameter smaller than a diameter of the tail portion.
4. A manufacturing process for a large thin-walled complex-shaped member according to claim 1, characterized in that: the manufacturing process comprises the following steps:
(1) screening, and selecting hollow pipes meeting the requirements;
(2) blanking, namely cutting a hollow pipe with a fixed length according to requirements;
(3) heating treatment, namely putting the hollow pipe into a heating furnace for heating;
(4) spinning forming, namely fixing one end of the hollow pipe, which is planned to be the head, on a spinning machine, spinning by the spinning machine from one end of the hollow pipe, which is not planned to be the tail, wherein the spinning machine is always used on the outer surface of the hollow pipe, the length of the hollow pipe cannot be increased, and spinning by the spinning machine to two ends of the hollow pipe with different thicknesses to obtain a semi-finished product of a thin-wall part body;
(5) isothermal normalizing, namely putting the semi-finished product of the thin-wall part body into a normalizing furnace for heating, then carrying out heat preservation treatment, and finally cooling to normal temperature;
(6) performing rust prevention treatment, packaging and warehousing, performing rust prevention treatment on the cooled semi-finished product of the thin-walled part body to obtain a finished product of the thin-walled part body, and packaging and warehousing the finished product.
5. The manufacturing process of a large complex-shaped thin-walled workpiece according to claim 4, wherein: in the step (3), the heating temperature is 650-680 ℃, and the heating time is 12-16 minutes.
6. The manufacturing process of a large complex-shaped thin-walled workpiece according to claim 4, wherein: in the step (5), the heating temperature is 1020-1050 ℃.
7. The manufacturing process of a large complex-shaped thin-walled workpiece according to claim 4, wherein: and (5) keeping the heat preservation temperature at 1020-1050 ℃ and the heat preservation time at 35-42 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010044401.2A CN111256022A (en) | 2020-01-15 | 2020-01-15 | Large thin-wall part with complex shape and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010044401.2A CN111256022A (en) | 2020-01-15 | 2020-01-15 | Large thin-wall part with complex shape and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111256022A true CN111256022A (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010044401.2A Pending CN111256022A (en) | 2020-01-15 | 2020-01-15 | Large thin-wall part with complex shape and manufacturing process thereof |
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| CN (1) | CN111256022A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825878B1 (en) * | 1970-11-26 | 1973-08-01 | ||
| CN1195306A (en) * | 1995-09-07 | 1998-10-07 | 狄纳米特诺贝尔爆炸材料和系统技术股份有限公司 | Method and device for producing pressure-rolled pipes with thickened inner wall sections at ends |
| US20040083595A1 (en) * | 1999-06-30 | 2004-05-06 | Fuji Junkogyo Kabushiki Kaisha | Method of manufacturing a hollow shaft having a flange at one end thereof |
| CN103752707A (en) * | 2014-01-27 | 2014-04-30 | 哈尔滨工业大学 | Die and method for forming straight tube section-expansion section composite titanium alloy equal-wall-thickness curved generatrix thin wall rotation body component |
| CN105170829A (en) * | 2015-10-10 | 2015-12-23 | 安徽工业大学 | Aluminum alloy gas bottle shell nosing method capable of increasing wall thickness of pipe mouth |
| CN106077219A (en) * | 2016-06-15 | 2016-11-09 | 洛阳双瑞特种装备有限公司 | A kind of titanium alloy seamless gas cylinder rotary press modelling method |
| CN107552629A (en) * | 2017-10-31 | 2018-01-09 | 四川达宇特种车辆制造厂 | A kind of multistage depth cylinder depth circular cone combinatorial surface housing part spin forming method |
| CN109158469A (en) * | 2018-08-03 | 2019-01-08 | 华中科技大学 | A kind of circular ring shape plate annular convex platform is progressive to thicken manufacturing process |
| CN109351835A (en) * | 2018-11-13 | 2019-02-19 | 航天特种材料及工艺技术研究所 | Integral spinning forming method with modal circumferential stiffening rib song bus thin-wall case |
| CN110548797A (en) * | 2019-09-16 | 2019-12-10 | 芜湖西诺普汽车零部件科技有限公司 | Coreless spinning processing method for large-proportion multi-time reducing hollow shaft |
| CN110640060A (en) * | 2019-04-30 | 2020-01-03 | 武汉理工大学 | Near-net composite forming process method for large complex basin-shaped ring piece |
-
2020
- 2020-01-15 CN CN202010044401.2A patent/CN111256022A/en active Pending
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| US20040083595A1 (en) * | 1999-06-30 | 2004-05-06 | Fuji Junkogyo Kabushiki Kaisha | Method of manufacturing a hollow shaft having a flange at one end thereof |
| CN103752707A (en) * | 2014-01-27 | 2014-04-30 | 哈尔滨工业大学 | Die and method for forming straight tube section-expansion section composite titanium alloy equal-wall-thickness curved generatrix thin wall rotation body component |
| CN105170829A (en) * | 2015-10-10 | 2015-12-23 | 安徽工业大学 | Aluminum alloy gas bottle shell nosing method capable of increasing wall thickness of pipe mouth |
| CN106077219A (en) * | 2016-06-15 | 2016-11-09 | 洛阳双瑞特种装备有限公司 | A kind of titanium alloy seamless gas cylinder rotary press modelling method |
| CN107552629A (en) * | 2017-10-31 | 2018-01-09 | 四川达宇特种车辆制造厂 | A kind of multistage depth cylinder depth circular cone combinatorial surface housing part spin forming method |
| CN109158469A (en) * | 2018-08-03 | 2019-01-08 | 华中科技大学 | A kind of circular ring shape plate annular convex platform is progressive to thicken manufacturing process |
| CN109351835A (en) * | 2018-11-13 | 2019-02-19 | 航天特种材料及工艺技术研究所 | Integral spinning forming method with modal circumferential stiffening rib song bus thin-wall case |
| CN110640060A (en) * | 2019-04-30 | 2020-01-03 | 武汉理工大学 | Near-net composite forming process method for large complex basin-shaped ring piece |
| CN110548797A (en) * | 2019-09-16 | 2019-12-10 | 芜湖西诺普汽车零部件科技有限公司 | Coreless spinning processing method for large-proportion multi-time reducing hollow shaft |
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Application publication date: 20200609 |
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