CN103712862A - Device for testing expansion performance of magnesium alloy tubular product - Google Patents
Device for testing expansion performance of magnesium alloy tubular product Download PDFInfo
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- CN103712862A CN103712862A CN201310746245.4A CN201310746245A CN103712862A CN 103712862 A CN103712862 A CN 103712862A CN 201310746245 A CN201310746245 A CN 201310746245A CN 103712862 A CN103712862 A CN 103712862A
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- magnesium alloy
- alloy pipe
- tubular product
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Abstract
The invention discloses a device for testing the expansion performance of a magnesium alloy tubular product. The device comprises a pair of punches, a displacement sensor and a pressure sensor, wherein the punches are used for extruding and sealing the magnesium alloy tubular product, the displacement sensor is used for measuring the displacement of a deformation zone of the magnesium alloy tubular product, and the pressure sensor is used for measuring the pressure on an inner wall of the deformation zone of the magnesium alloy tubular product; a high pressure passage communicated with the interior of the magnesium alloy tubular product is formed in the middle of one punch, a high pressure air pump device is connected with the other end of the high pressure passage, and sealing elements for sealing the magnesium alloy tubular product are arranged at the end parts of the punches. According to the device, a to-be-tested tubular product is filled with high pressure gas, the pressure of the high pressure gas and the expanded height of the to-be-tested tubular product are recorded in real time in an expansion process of the to-be-tested tubular product, and then the expansion performance coefficient of the magnesium alloy tubular product can be calculated conveniently. The device is low in test cost and free of pollution.
Description
Technical field
The invention belongs to the general metering field of power or stress, specifically relate to a kind of for testing the proving installation of magnesium alloy pipe expansion character.
Background technology
Magnesium alloy pipe warm hydroforming is to realize the advanced manufacturing technology that light material and two kinds of loss of weight approach of hollow light body structure combine, have broad application prospects, such as in automobile industry, internal high pressure forming is an advanced manufacturing technology that is in rising situation and has good development prospect, the method of test magnesium alloy pipe expansion character is mainly in the middle of tubing, to place elastic body at present, by drift, at two ends, extruding is expanded tubing, thereby test its expansion character, another kind method is that tubing is sealed at both ends, by be filled with high-pressure liquid medium in tubing to be tested, pressure and the bulging height of the high-pressure liquid medium in real time record tube bulge process to be tested, until tubing to be tested breaks, thereby the expansion character of test tubing, the shortcoming of a kind of front method is the inhomogeneous easy precision that affects test result of elastic body distortion, the shortcoming of a kind of rear method is to break moment at test tubing, will cause a large amount of liquid mediums to spray, liquid medium not only can pollute experimental situation, can pollute test tubing, affect follow-up Port detecting, and cannot reclaim after liquid medium injection, waste is serious, cost is high.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of proving installation of magnesium alloy pipe expansion character, the proving installation of this magnesium alloy pipe expansion character is by be filled with gases at high pressure in tubing to be measured, high-pressure gas pressure and bulging height in real time record tubing expansion process to be measured, can conveniently calculate magnesium alloy pipe expansion character coefficient, experimentation cost is low, pollution-free.
For achieving the above object, the proving installation of a kind of magnesium alloy pipe expansion character of the present invention, comprise the drift of a pair of crush seal magnesium alloy pipe, for measuring the displacement transducer of magnesium alloy pipe distorted area displacement and for measuring the pressure transducer of magnesium alloy pipe distorted area inner wall pressure, described in one of them, in the middle of drift, be provided with the high-pressure channel with magnesium alloy pipe internal communication, the described high-pressure channel other end is connected with high-pressure pump device, and a pair of described nose of punch is provided with for sealing the seal of magnesium alloy pipe.
Further, also comprise the assembling die that is arranged on two ends, magnesium alloy pipe distorted area, described assembling die comprises for wrapping up mold and the bed die of magnesium alloy pipe, is provided with for the heating arrangement to magnesium alloy pipe heating in described mold and bed die.
Further, described nose of punch is provided with seal groove, and described seal groove cross section is set to trapezium structure, and described seal is set to U-shaped O-ring seal and is arranged in seal groove, and described magnesium alloy pipe end is wrapped in the U-shaped groove that is arranged on U-shaped O-ring seal.
Further, in the middle of described another drift, be provided with sleeve pipe, sleeve pipe extends to place, magnesium alloy pipe internal modification district, and described pressure transducer is arranged on the end of sleeve pipe.
Further, described drift is set to tapered punch, and described extrusion magnesium alloy tubing is sealedly connected on the conical surface of tapered punch.
Beneficial effect of the present invention is:
The proving installation of a kind of magnesium alloy pipe expansion character of the present invention is by be filled with gases at high pressure in tubing to be measured, high-pressure gas pressure and bulging height in real time record tubing expansion process to be measured, can conveniently calculate magnesium alloy pipe expansion character coefficient, experimentation cost is low, pollution-free.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearer, the invention provides following accompanying drawing and describe:
Fig. 1 is the structural representation of the proving installation of a kind of magnesium alloy pipe expansion character of the present invention;
Fig. 2 is the structural representation of drift in the proving installation of a kind of magnesium alloy pipe expansion character of the present invention.
Accompanying drawing explanation 1-magnesium alloy pipe; 2-drift; 3-high-pressure channel; 4-mold; 5-bed die; 6-computing machine; 7-pressure transducer; 8-displacement transducer; 9-seal groove.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Be illustrated in figure 1 the structural representation of the proving installation of a kind of magnesium alloy pipe expansion character of the present invention; The proving installation of a kind of magnesium alloy pipe expansion character of the present invention comprises the drift 2 of a pair of extrusion magnesium alloy tubing 1, for measuring the displacement transducer 8 of magnesium alloy pipe 1 distorted area displacement and for measuring the pressure transducer 7 of magnesium alloy pipe distorted area inner wall pressure, described in one of them, in the middle of drift 2, be provided with the high-pressure channel 3 with magnesium alloy pipe 1 internal communication, described high-pressure channel 3 other ends are connected with high-pressure pump device, and 1 pair of described drift 2 end is provided with for sealing the seal of magnesium alloy pipe 1.
The present embodiment is by drift extrusion magnesium alloy tubing, make the inner seal cavity that forms of magnesium alloy pipe, by high-pressure channel 3 phase magnesium alloy pipe delivered inside gases at high pressure, tubing to be measured is expanded, until tubing to be measured breaks, and by displacement transducer 8 and pressure transducer 7, high-pressure gas pressure and bulging height in real time record tubing expansion process to be measured, finally calculate by computing machine 6 the equivalent stress strain curve that obtains magnesium alloy pipe.
Further, the preferred assembling die that is arranged on two ends, magnesium alloy pipe distorted area that also comprises, described assembling die comprises for wrapping up mold 4 and the bed die 5 of magnesium alloy pipe 1, in described mold 3 and bed die 5, be provided with for the heating arrangement to magnesium alloy pipe heating, the present embodiment is by being arranged on the assembling die at two ends, magnesium alloy pipe distorted area, simulation magnesium alloy pipe 1 carries out the test of mechanics expansion character under hot conditions, is conducive to understand the specified stressing conditions of tubing to be measured under working environment.
Further, preferred described drift 2 ends are provided with seal groove 9, described seal groove 9 cross sections are set to trapezium structure, described seal is set to U-shaped O-ring seal and is arranged in seal groove 9, described magnesium alloy pipe 1 end is wrapped in the U-shaped groove 9 that is arranged on U-shaped O-ring seal, this structure is conducive to make tapered punch 2 and magnesium alloy pipe 1 to seal, simple in structure, reliably, cost is low, this structure of the present embodiment can also be another structure, as as described in drift be set to tapered punch, described extrusion magnesium alloy tubing is sealedly connected on the conical surface of tapered punch, this structure in use, need tapered punch to push magnesium alloy pipe, easy tubing final test data to be measured.
Further, in the middle of preferred described another drift 1, be provided with sleeve pipe, sleeve pipe extends to place, magnesium alloy pipe internal modification district, and described pressure transducer 7 is arranged on the end of sleeve pipe, and this structure is conducive to measure magnesium alloy pipe 1 distorted area inner wall pressure.
Finally explanation is, above preferred embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can to it, make various changes in the form and details, and not depart from the claims in the present invention book limited range.
Claims (5)
1. the proving installation of a magnesium alloy pipe expansion character, comprise the drift of a pair of crush seal magnesium alloy pipe, for measuring the displacement transducer of magnesium alloy pipe distorted area displacement and for measuring the pressure transducer of magnesium alloy pipe distorted area inner wall pressure, it is characterized in that: described in one of them, in the middle of drift, be provided with the high-pressure channel with magnesium alloy pipe internal communication, the described high-pressure channel other end is connected with high-pressure pump device, and a pair of described nose of punch is provided with for sealing the seal of magnesium alloy pipe.
2. the proving installation of a kind of magnesium alloy pipe expansion character as claimed in claim 1, it is characterized in that: also comprise the assembling die that is arranged on two ends, magnesium alloy pipe distorted area, described assembling die comprises for wrapping up mold and the bed die of magnesium alloy pipe, is provided with for the heating arrangement to magnesium alloy pipe heating in described mold and bed die.
3. the proving installation of a kind of magnesium alloy pipe expansion character as claimed in claim 2, it is characterized in that: described nose of punch is provided with seal groove, described seal groove cross section is set to trapezium structure, described seal is set to U-shaped O-ring seal and is arranged in seal groove, and described magnesium alloy pipe end is wrapped in the U-shaped groove that is arranged on U-shaped O-ring seal.
4. the proving installation of a kind of magnesium alloy pipe expansion character as claimed in claim 3, is characterized in that: in the middle of described another drift, be provided with sleeve pipe, sleeve pipe extends to place, magnesium alloy pipe internal modification district, and described pressure transducer is arranged on the end of sleeve pipe.
5. the proving installation of a kind of magnesium alloy pipe expansion character as claimed in claim 1, is characterized in that: described drift is set to tapered punch, and described extrusion magnesium alloy tubing is sealedly connected on the conical surface of tapered punch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310746245.4A CN103712862A (en) | 2013-12-30 | 2013-12-30 | Device for testing expansion performance of magnesium alloy tubular product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310746245.4A CN103712862A (en) | 2013-12-30 | 2013-12-30 | Device for testing expansion performance of magnesium alloy tubular product |
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| Publication Number | Publication Date |
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| CN103712862A true CN103712862A (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310746245.4A Pending CN103712862A (en) | 2013-12-30 | 2013-12-30 | Device for testing expansion performance of magnesium alloy tubular product |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634665A (en) * | 2014-09-12 | 2015-05-20 | 北京航空航天大学 | Pipe liquid filling bulging test method and device |
| CN109596432A (en) * | 2018-11-27 | 2019-04-09 | 保隆(安徽)汽车配件有限公司 | A kind of Measurement die of tube forming limiting figure |
| CN113624602A (en) * | 2021-07-29 | 2021-11-09 | 中国科学院金属研究所 | Experimental device and construction method for right area curve of pipe forming limit diagram |
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| CN2515670Y (en) * | 2001-12-07 | 2002-10-09 | 承德市金建检测仪器有限公司 | Pressure-resisting demolition test clamping device for plastic pipe |
| CN101520388A (en) * | 2009-04-02 | 2009-09-02 | 哈尔滨工业大学 | Device for testing bulge performance of tubular products |
| CN201464290U (en) * | 2009-08-19 | 2010-05-12 | 师振铎 | Pressure resistant test clamp for multi-size plastic pipes |
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| CN103528899A (en) * | 2013-11-01 | 2014-01-22 | 哈尔滨工业大学 | Tube forming performance testing device and method under combined action of internal and external pressure |
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| CN102641936A (en) * | 2012-05-08 | 2012-08-22 | 哈尔滨工业大学 | Tubing bulging device and method using internal heating and pressing |
| CN202674695U (en) * | 2012-05-28 | 2013-01-16 | 南京联塑科技实业有限公司 | PE (polyethylene) pipe end air blocking device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634665A (en) * | 2014-09-12 | 2015-05-20 | 北京航空航天大学 | Pipe liquid filling bulging test method and device |
| CN109596432A (en) * | 2018-11-27 | 2019-04-09 | 保隆(安徽)汽车配件有限公司 | A kind of Measurement die of tube forming limiting figure |
| CN113624602A (en) * | 2021-07-29 | 2021-11-09 | 中国科学院金属研究所 | Experimental device and construction method for right area curve of pipe forming limit diagram |
| CN113624602B (en) * | 2021-07-29 | 2022-07-15 | 中国科学院金属研究所 | Experimental device and construction method for right area curve of pipe forming limit diagram |
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Application publication date: 20140409 |