CN111375691B - Preforming device and preforming method for titanium alloy thin-wall cylindrical part - Google Patents
Preforming device and preforming method for titanium alloy thin-wall cylindrical part Download PDFInfo
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- CN111375691B CN111375691B CN201811622337.0A CN201811622337A CN111375691B CN 111375691 B CN111375691 B CN 111375691B CN 201811622337 A CN201811622337 A CN 201811622337A CN 111375691 B CN111375691 B CN 111375691B
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- titanium alloy
- preforming
- mandrel
- alloy thin
- cylindrical part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/008—Bending sheet metal along straight lines, e.g. to form simple curves combined with heating or cooling of the bends
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
Abstract
The invention provides a preforming device and a preforming method for a titanium alloy thin-wall cylindrical part, belongs to the technical field of titanium alloy preforming, and particularly relates to the preforming device and the preforming method for the titanium alloy thin-wall cylindrical part. The method solves the problems that the existing preforming method of the titanium alloy thin-wall cylindrical part has long production period, low efficiency and high production cost and can not meet the requirement of batch production. It includes staple bolt, dabber, pressure head and heating pipe. It is mainly used for the preforming production of titanium alloy thin-wall cylindrical parts.
Description
Technical Field
The invention belongs to the technical field of titanium alloy preforming, and particularly relates to a preforming device and a preforming method for a titanium alloy thin-wall cylindrical part.
Background
The titanium alloy thin-wall barrel part has the excellent characteristics of light weight, no magnetism, corrosion resistance, high temperature resistance and the like, can reduce the mass of an aircraft in the fields of aviation, aerospace and the like, improves the transportation load, can replace stainless steel and alloy steel barrel parts in severe working environments containing corrosive media such as navigation, atomic energy, chemical engineering and the like, and reduces the maintenance cost. Therefore, the research on the preforming method of the thin-wall cylindrical part made of the titanium alloy has important significance for reducing the industrial production cost and improving the development level of corrosion-resistant materials.
At present, two methods for preforming the titanium alloy thin-wall cylindrical part are mainly used, wherein the rolling forming belongs to a cold processing mode, and only a large-thickness large-diameter plate can be preformed, but the preforming of the thin-wall small-diameter part cannot be met. In the existing thermal expansion forming method, a preformed plate is placed between a mandrel and an anchor ear, the anchor ear is screwed by a bolt, and the preformed plate is placed in a vacuum furnace for thermal forming. A large amount of manpower is wasted, only one tool can be used, and the production cycle is long and the efficiency is low. The tooling limits production efficiency, increases tooling, and results in increased cost. After the bolts enter the furnace once, more than half of the bolts are wasted, and the bolts cannot be used continuously, so that the cost is wasted. Mass production cannot be satisfied, and thus the technique has not been applied to a large area.
Disclosure of Invention
The invention provides a preforming device and a preforming method for a titanium alloy thin-wall cylindrical part, which aim to solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a titanium alloy thin wall cylinder forming piece preforming device, it includes staple bolt, dabber, pressure head and heating pipe, the staple bolt is semi-circular structure, quantity is two, two staple bolts are along dabber axis symmetrical arrangement and link to each other with the pneumatic cylinder, the pressure head is located the dabber upper end, the pressure head passes through the rocking arm and the arm that stretches out and draws back links to each other with the equipment end, swing motion is along the revolving axle to the rocking arm drive ram, the arm that stretches out and draws back drive ram is the concertina movement along the axial, the heating pipe is located inside the dabber.
Furthermore, the number of the heating pipes is four, and the heating pipes are uniformly distributed along the circumferential direction of the mandrel.
The invention also provides a preforming method of the titanium alloy thin-wall cylindrical part, which comprises the following steps:
the method comprises the following steps: connecting the heating pipe with a power supply to enable the heating pipe to generate heat, and heating the mandrel to the preforming process temperature through the heating pipe;
step two: performing graphite coating treatment on the titanium alloy plate, and placing the titanium alloy plate between two hoops and a mandrel;
step three: the hoops are pushed by the hydraulic cylinders on the two sides, so that the plates are tightly held by the mandrel under the pushing of the hoops, and then heat preservation is carried out;
step four: after the heat preservation is finished, the hydraulic cylinders on the two sides drive the anchor ear to return, the pressure head on the upper end of the mandrel is moved away, and the preformed cylindrical part is taken out from the upper end.
Furthermore, the thickness of the titanium alloy plate is 0.3-1.5mm, the height is 200-1500mm, and the diameter of the preformed cylindrical part is 50-250 mm.
Furthermore, the heating pipe in the first step heats the mandrel to 730-.
Furthermore, the heat preservation time in the third step is 25-30 minutes.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an efficient forming method for a preforming production process of a titanium alloy thin-wall cylindrical part, and a set of tool is adopted to realize the preforming of the titanium alloy thin-wall cylindrical part. The preforming method adopts a heating mandrel, a hydraulic cylinder pushes a hoop, and a plate to be preformed is tightly attached to the heating mandrel under the pressure of the hoop, so that the purpose of performing the plate is achieved. The defect that a plurality of sets of tools are needed and the heating period is long is overcome, the technical problems of low-efficiency production, high product cost and long production period of the titanium alloy thin-wall cylindrical part preforming are successfully solved, the blank of the low-efficiency production application field of the titanium alloy thin-wall cylindrical part preforming is filled, and the titanium alloy thin-wall cylindrical part preforming has great prospect. Through measurement of the preformed thin-wall cylindrical part produced by the invention, the thin-wall cylindrical part obtained by the manufacturing device and the method has high forming precision, no indentation on the surface, no residual stress and multiple adaptation varieties, and can be used for preforming all brands of titanium alloy thin-wall cylindrical parts. The invention has good application prospect in the preforming manufacture of the titanium alloy thin-wall cylindrical part by comprehensively considering the factors of forming efficiency, cost control, part forming quality and the like.
Drawings
FIG. 1 is a schematic structural diagram of a titanium alloy thin-wall cylindrical part preforming device according to the invention;
FIG. 2 is a schematic diagram of a method for preforming a titanium alloy thin-walled cylindrical part according to the invention;
FIG. 3 is a schematic view of a titanium alloy thin-wall cylindrical part preform product according to the present invention.
1-hydraulic cylinder, 2-anchor ear, 3-mandrel, 4-pressure head, 5-rocker arm, 6-telescopic arm, 7-equipment end, 8-foundation, 9-power supply, 10-heating pipe, 11-titanium alloy plate and 12-revolving shaft.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely explained below with reference to the drawings in the embodiments of the present invention.
Referring to fig. 1-3 to illustrate the present embodiment, a titanium alloy thin-walled cylindrical part preforming device includes two hoops 2, a mandrel 3, two press heads 4 and a heating pipe 10, where the hoops 2 are in a semicircular structure, the two hoops 2 are symmetrically arranged along a central axis of the mandrel 3 and are connected to a hydraulic cylinder 1, the press heads 4 are located at an upper end of the mandrel 3, the press heads 4 are connected to an equipment end 7 through a rocker arm 5 and a telescopic arm 6, the rocker arm 5 drives the press heads 4 to make a rotary motion along a rotary shaft 12, the telescopic arm 6 drives the press heads 4 to make a telescopic motion along an axial direction, and the heating pipe 10 is located inside the mandrel 3.
The heating pipes are four in number and are uniformly distributed along the circumferential direction of the mandrel, so that the mandrel 3 is uniformly heated.
The invention also provides a preforming method of the titanium alloy thin-wall cylindrical part, which comprises the following steps:
the method comprises the following steps: connecting the heating pipe 10 with a power supply 9, so that the heating pipe 10 generates heat, and heating the mandrel 3 to the preforming process temperature through the heating pipe 10;
step two: performing graphite coating treatment on the titanium alloy plate 11, and placing the titanium alloy plate between the two hoops 2 and the mandrel;
step three: the hoops 2 are pushed by the hydraulic cylinders 1 on the two sides, so that the plates 11 are tightly held on the core shaft 3 under the pushing of the hoops 2, and then heat preservation is carried out;
step four: after the heat preservation is finished, the hydraulic cylinders 1 on the two sides drive the anchor ear 2 to return, the pressure head on the upper end of the mandrel 3 is moved away, and the preformed cylindrical part is taken out from the upper end.
In the embodiment of the invention, the thickness of the titanium alloy plate 11 is 1.0mm, the height is 800mm, the diameter of the preformed cylindrical part is 150mm, the mark is TA15, the hoop 2 and the mandrel 3 are manufactured by matching the size of the cylindrical part, the mandrel 3 is heated to 750 ℃ by the heating pipe 10 in the first step, and the heat preservation time in the third step is 25-30 minutes. And taking out the preformed cylindrical part from the upper end, replacing the titanium alloy plate 11, and repeating the steps from the second step to the fourth step to realize the continuous preformed production of the titanium alloy thin-wall cylindrical part. The method can be used for producing products, can efficiently produce a large amount of titanium alloy thin-wall cylindrical parts in a short period, and breaks through the situation that only small-batch production can be realized in the market.
The titanium alloy thin-wall cylindrical part preforming device and the preforming method provided by the invention are described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (5)
1. A titanium alloy thin-wall cylindrical part preforming method is characterized in that: the preforming device comprises hoops (2), a mandrel (3), pressure heads (4) and heating pipes (10), the hoops (2) are of a semicircular structure, the number of the hoops is two, the two hoops (2) are symmetrically arranged along the central axis of the mandrel (3) and are connected with a hydraulic cylinder (1), the pressure heads (4) are located at the upper end of the mandrel (3), the pressure heads (4) are connected with an equipment end (7) through rocker arms (5) and telescopic arms (6), the rocker arms (5) drive the pressure heads (4) to do rotary motion along a rotary shaft (12), the telescopic arms (6) drive the pressure heads (4) to do telescopic motion along the axial direction, and the heating pipes (10) are located inside the mandrel (3);
the preforming method comprises the following steps:
the method comprises the following steps: connecting the heating pipe (10) with a power supply (9) to enable the heating pipe (10) to generate heat, and heating the mandrel (3) to the temperature of the pre-forming process through the heating pipe (10);
step two: carrying out graphite coating treatment on the titanium alloy plate (11), and placing the titanium alloy plate between two anchor ears (2) and a mandrel;
step three: the anchor ear (2) is pushed by the hydraulic cylinders (1) at the two sides, so that the titanium alloy plate (11) is tightly held on the mandrel (3) under the pushing of the anchor ear (2), and then heat preservation is carried out;
step four: after heat preservation is finished, the hydraulic cylinders (1) on the two sides drive the anchor ear (2) to return, the pressure head at the upper end of the mandrel (3) is moved away, and the preformed cylindrical part is taken out from the upper end.
2. The method for preforming a titanium alloy thin-walled cylindrical member according to claim 1, wherein: the number of the heating pipes (10) is four, and the heating pipes are uniformly distributed along the circumferential direction of the mandrel (3).
3. The method for preforming a titanium alloy thin-walled cylindrical member according to claim 1, wherein: the thickness of the titanium alloy plate (11) is 0.3-1.5mm, the height is 200-1500mm, and the diameter of the preformed cylindrical part is 50-250 mm.
4. The method for preforming a titanium alloy thin-walled cylindrical member according to claim 1, wherein: in the first step, the heating pipe (10) heats the mandrel (3) to 730 ℃ and 750 ℃.
5. The method for preforming a titanium alloy thin-walled cylindrical member according to claim 1, wherein: and the heat preservation time in the third step is 25-30 minutes.
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| CN201811622337.0A CN111375691B (en) | 2018-12-28 | 2018-12-28 | Preforming device and preforming method for titanium alloy thin-wall cylindrical part |
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| CN201811622337.0A CN111375691B (en) | 2018-12-28 | 2018-12-28 | Preforming device and preforming method for titanium alloy thin-wall cylindrical part |
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| CN111375691B true CN111375691B (en) | 2022-04-12 |
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| CN101065197A (en) * | 2004-09-24 | 2007-10-31 | 蒂森克虏伯钢铁股份公司 | Method and device for production of a longitudinal seam welded hollow profile |
| CN202097282U (en) * | 2011-04-15 | 2012-01-04 | 江苏超力电器有限公司 | One-step curling die |
| CN103801596A (en) * | 2013-10-22 | 2014-05-21 | 北京航星机器制造有限公司 | Overall hot circle rolling method and mold for large-size titanium alloy cylinder parts |
| CN204108115U (en) * | 2014-08-07 | 2015-01-21 | 浙江兄弟之星汽配有限公司 | A kind of sheet material shaping round tube mould |
| CN104624765A (en) * | 2014-12-03 | 2015-05-20 | 哈尔滨工业大学 | Rotary heating and temperature control device in combined spinning process of dissimilar metal |
| CN205851664U (en) * | 2016-06-22 | 2017-01-04 | 佛山市顺德区赛恩特实业有限公司 | A kind of automobile silencing circle_curling die of system pipe fitting straight tube |
| CN206779202U (en) * | 2017-04-19 | 2017-12-22 | 西安泵阀总厂有限公司 | One kind rolls the pump shaft covering device such as SKW for being cold-pressed titanium plate |
| CN108160815A (en) * | 2017-12-27 | 2018-06-15 | 揭阳市汇宝昌电器有限公司 | A kind of punching edge rolling mold of full-automatic no waste mine high quality |
-
2018
- 2018-12-28 CN CN201811622337.0A patent/CN111375691B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101065197A (en) * | 2004-09-24 | 2007-10-31 | 蒂森克虏伯钢铁股份公司 | Method and device for production of a longitudinal seam welded hollow profile |
| CN202097282U (en) * | 2011-04-15 | 2012-01-04 | 江苏超力电器有限公司 | One-step curling die |
| CN103801596A (en) * | 2013-10-22 | 2014-05-21 | 北京航星机器制造有限公司 | Overall hot circle rolling method and mold for large-size titanium alloy cylinder parts |
| CN204108115U (en) * | 2014-08-07 | 2015-01-21 | 浙江兄弟之星汽配有限公司 | A kind of sheet material shaping round tube mould |
| CN104624765A (en) * | 2014-12-03 | 2015-05-20 | 哈尔滨工业大学 | Rotary heating and temperature control device in combined spinning process of dissimilar metal |
| CN205851664U (en) * | 2016-06-22 | 2017-01-04 | 佛山市顺德区赛恩特实业有限公司 | A kind of automobile silencing circle_curling die of system pipe fitting straight tube |
| CN206779202U (en) * | 2017-04-19 | 2017-12-22 | 西安泵阀总厂有限公司 | One kind rolls the pump shaft covering device such as SKW for being cold-pressed titanium plate |
| CN108160815A (en) * | 2017-12-27 | 2018-06-15 | 揭阳市汇宝昌电器有限公司 | A kind of punching edge rolling mold of full-automatic no waste mine high quality |
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| CN111375691A (en) | 2020-07-07 |
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