CN110736699B - Device for testing binding force between plastic part and metal insert and testing method thereof - Google Patents
Device for testing binding force between plastic part and metal insert and testing method thereof Download PDFInfo
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- CN110736699B CN110736699B CN201910860065.6A CN201910860065A CN110736699B CN 110736699 B CN110736699 B CN 110736699B CN 201910860065 A CN201910860065 A CN 201910860065A CN 110736699 B CN110736699 B CN 110736699B
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- connecting piece
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a device for testing the bonding force of a plastic part and a metal insert, which is characterized by comprising a first stretcher connecting piece, a second stretcher connecting piece, a heating resistance wire and a workpiece clamp, wherein the first stretcher connecting piece is fixedly connected with the metal insert, and the second stretcher connecting piece is fixedly connected with the workpiece clamp; the workpiece clamp comprises a clamp body, a mounting through hole arranged on the side surface of the clamp body and a mounting hole arranged at the top of the clamp body, wherein the mounting hole is communicated with the mounting through hole; the heating resistance wire is wound on the first stretcher connecting piece. The invention has the beneficial effects that: the device can be used for effectively simulating the working condition that the insert falls off in the connection and use process of the plastic connector with the metal insert and the water heater, can be used for effectively detecting the reliability of a product in the use process, and is beneficial to subsequently improving the production quality of the product.
Description
Technical Field
The invention relates to the technical field of home decoration plastic pipeline system joint testing, in particular to a device for testing the bonding force of a plastic part and a metal insert and a testing method thereof.
Background
With the increasing proportion of plastic pipes in cold and hot water supply systems and industrial pipe work, plastic joints with metal inserts are used in large scale as connecting fittings. In engineering application, the problem that a metal part falls off due to the fact that a plastic part is melted in a cold water pipe of a water heater causes high attention of design and development personnel, so that the structural design of a product is improved by the design and development personnel through a simulated environment drawing test, and the reliability of the product is improved.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a device for testing the bonding force between a plastic part and a metal insert and a test method thereof, which have a reasonable structure.
The technical scheme of the invention is as follows:
the device for testing the bonding force of the plastic part and the metal insert is characterized by comprising a first stretcher connecting piece, a second stretcher connecting piece, a heating resistance wire, a plastic joint with the metal insert and a workpiece clamp, wherein the plastic joint with the metal insert is arranged in the workpiece clamp; the workpiece clamp comprises a clamp body, a mounting through hole arranged on the side surface of the clamp body and a mounting hole arranged at the top of the clamp body, wherein the mounting hole is communicated with the mounting through hole; the heating resistance wire is wound on the first stretcher connecting piece.
The device for testing the bonding force of the plastic part and the metal insert is characterized in that a heating temperature control device is arranged on the heating resistance wire in a circuit connection mode and comprises a temperature detector and a control box, and the temperature detector is arranged at the tail end of a connecting piece of the first stretching machine.
The device for testing the bonding force of the plastic part and the metal insert is characterized in that a threaded head is arranged at the tail end of the first stretcher connecting piece, and the first stretcher connecting piece is fixedly connected with the metal insert through the threaded head.
The device for testing the bonding force of the plastic part and the metal insert is characterized in that a connecting bulge is arranged at the bottom of the clamp body, an inner threaded hole is formed in the center of the connecting bulge, a threaded head is arranged at the top of the second stretcher connecting piece, and the second stretcher connecting piece is fixedly connected with the inner threaded hole of the clamp body through the threaded head.
The hot drawing test method of the device for testing the bonding force of the plastic part and the metal insert is characterized by comprising the following steps of:
1) Arranging the plastic joint with the metal insert in the workpiece fixture, and connecting the plastic joint with the first stretcher connecting piece and the second stretcher connecting piece with the testing machine after the plastic joint with the metal insert is connected with the first stretcher connecting piece;
2) Starting a heating temperature control device, heating the plastic joint with the metal insert through a heating resistance wire, and keeping the constant temperature after the preset temperature is reached;
3) After the constant temperature time is reached, setting the tensile speed of the testing machine to be 1mm/min, starting the testing machine until the metal insert in the plastic joint with the metal insert is pulled off, and stopping the tensile;
4) And finally, recording the pulling-off force value.
The working condition simulation test method of the device for testing the bonding force of the plastic part and the metal insert is characterized by comprising the following steps of:
1) Arranging the plastic joint with the metal insert in the workpiece fixture, and connecting the plastic joint with the first stretcher connecting piece and the second stretcher connecting piece with the testing machine after the plastic joint with the metal insert is connected with the first stretcher connecting piece;
2) Setting the drawing prestress of the testing machine to be 2 times of the internal pressure of the pipeline borne by the joint, starting the testing machine to reach the set prestress, and keeping the tension until the test is finished;
3) Starting a heating temperature control device, heating the plastic joint with the metal insert through a heating resistance wire, and keeping the constant temperature after the preset temperature is reached;
4) And recording the time of falling off, thereby simulating the actual use working condition.
The invention has the beneficial effects that: the device can be used for effectively simulating the working condition that the insert falls off in the connection and use process of the plastic connector with the metal insert and the water heater, can be used for effectively detecting the reliability of a product in the use process, and is beneficial to subsequently improving the production quality of the product.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the clamp of the present invention;
FIG. 3 is a schematic top view of the fixture of the present invention;
in the figure: 1-a first stretcher connecting piece, 2-a heating resistance wire, 3-a temperature detector, 4-a plastic joint with a metal insert, 5-a workpiece clamp, 501-a clamp body, 502-an installation through hole, 503-a connecting bulge, 504-an internal thread hole, 505-an installation hole, 6-a second stretcher connecting piece and 7-a control box.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1-3, the device for testing the bonding force between a plastic part and a metal insert comprises a first stretcher connecting piece 1, a heating resistance wire 2, a temperature detector 3, a plastic joint 4 with a metal insert, a workpiece clamp 5, a clamp body 501, an installation through hole 502, a connecting protrusion 503, an internal threaded hole 504, an installation hole 505, a second stretcher connecting piece 6 and a control box 7.
A device for testing the binding force of a plastic piece and a metal insert comprises a first stretcher connecting piece 1, a second stretcher connecting piece 6, a heating resistance wire 2, a plastic joint 4 with the metal insert and a workpiece clamp 5, wherein a threaded head is arranged at the tail end of the first stretcher connecting piece 1, and the first stretcher connecting piece 1 is fixedly connected with the metal insert in the plastic joint 4 with the metal insert through the threaded head;
the workpiece clamp 5 comprises a clamp body 501, a mounting through hole 502 arranged on the side surface of the clamp body 501 and a mounting hole 505 arranged on the top of the clamp body 501, wherein the mounting hole 505 is communicated with the mounting through hole 502; the bottom of the clamp body 501 is provided with a connecting bulge 503, the center of the connecting bulge 503 is provided with an internal thread hole 504, the top of the second stretcher connecting piece 6 is provided with a thread head, and the second stretcher connecting piece 6 is fixedly connected with the internal thread hole 504 of the clamp body 501 through the thread head.
The plastic connector 4 with the metal insert is placed in the clamp body 501 through the mounting through hole 502, and the first stretcher connecting piece 1 penetrates through the mounting hole 505 to be fixedly connected with the plastic connector 4 with the metal insert.
The working principle is as follows:
the plastic joint with the metal insert is connected with a connecting piece of a first tensile machine through threads, then is connected with a microcomputer-controlled electronic universal tensile testing machine, and is pulled at a specific test temperature through a heating resistance wire, so that the design development and application working conditions of the pipe fitting with the metal insert are evaluated.
The experimental steps are as follows:
a hot drawing test method of a device for testing the bonding force of a plastic part and a metal insert comprises the following specific steps:
1) Placing the plastic joint with the metal insert into the mounting through hole of the workpiece fixture, and connecting the first stretcher connecting piece and the second stretcher connecting piece with the testing machine respectively after the first stretcher connecting piece penetrates through the mounting hole of the workpiece fixture and is in threaded connection with the metal insert of the plastic joint with the metal insert;
2) Starting a heating temperature control device, heating the plastic joint with the metal insert through a heating resistance wire, keeping constant temperature after the preset temperature is reached, and carrying out heating temperature and constant temperature time according to the parameters in the table 1;
3) After the constant temperature time is reached, setting the tensile speed of the testing machine to be 1mm/min, starting the testing machine until the metal insert in the plastic joint with the metal insert is pulled off, and stopping the tensile;
4) And finally, recording the pulling-off force value.
A working condition simulation test method of a device for testing the binding force of a plastic part and a metal insert comprises the following specific steps:
1) Placing the plastic joint with the metal insert into the mounting through hole of the workpiece fixture, and connecting the first stretcher connecting piece and the second stretcher connecting piece with the testing machine respectively after the first stretcher connecting piece penetrates through the mounting hole of the workpiece fixture and is in threaded connection with the metal insert of the plastic joint with the metal insert;
2) Setting the drawing prestress of the testing machine to be 2 times of the internal pressure of the pipeline borne by the joint (if the municipal pipe network pressure is set to be 0.3MPa, and the joint prestress is set to be 0.6 MPa), starting the testing machine to reach the set prestress, and keeping the tension until the test is finished;
3) Starting a heating temperature control device, heating the plastic joint with the metal insert through a heating resistance wire, keeping constant temperature after the preset temperature is reached, and carrying out heating temperature and constant temperature time according to the parameters in the table 1;
4) And recording the falling time, thereby simulating the actual use working condition.
TABLE 1 test temperature and constant temperature time
Claims (3)
1. The test method of the device for testing the bonding force of the plastic part and the metal insert is characterized in that the device comprises a first stretcher connecting piece (1), a second stretcher connecting piece (6), a heating resistance wire (2), a plastic joint (4) with the metal insert and a workpiece clamp (5), wherein the plastic joint (4) with the metal insert is arranged in the workpiece clamp (5), the first stretcher connecting piece (1) is fixedly connected with the plastic joint (4) with the metal insert, and the second stretcher connecting piece (6) is fixedly connected with the workpiece clamp (5); the workpiece clamp (5) comprises a clamp body (501), a mounting through hole (502) arranged on the side surface of the clamp body (501) and a mounting hole (505) arranged at the top of the clamp body (501), wherein the mounting hole (505) is communicated with the mounting through hole (502); the heating resistance wire (2) is wound on the first stretcher connecting piece (1); the heating resistance wire (2) is provided with a heating temperature control device in a circuit connection mode, the heating temperature control device comprises a temperature detector (3) and a control box (7), and the temperature detector (3) is arranged at the tail end of the first stretcher connecting piece (1);
the hot-drawing test method comprises the following steps:
1) Arranging the plastic joint with the metal insert in the workpiece fixture, and connecting the plastic joint with the first stretcher connecting piece, and then connecting the first stretcher connecting piece and the second stretcher connecting piece with the testing machine;
2) Starting a heating temperature control device, heating the plastic joint with the metal insert through a heating resistance wire, and keeping the constant temperature after the preset temperature is reached;
3) After the constant temperature time is reached, setting the tensile speed of the testing machine to be 1mm/min, starting the testing machine until the metal insert in the plastic joint with the metal insert is pulled off, and stopping the tensile;
4) Finally, recording the pulling-out force value;
the working condition simulation test method comprises the following steps:
1) Arranging the plastic joint with the metal insert in the workpiece fixture, and connecting the plastic joint with the first stretcher connecting piece, and then connecting the first stretcher connecting piece and the second stretcher connecting piece with the testing machine;
2) Setting the drawing prestress of the testing machine to be 2 times of the internal pressure of the pipeline borne by the joint, starting the testing machine to reach the set prestress, and keeping the tension until the test is finished;
3) Starting a heating temperature control device, heating the plastic joint with the metal insert through a heating resistance wire, and keeping the constant temperature after the preset temperature is reached;
4) And recording the time of falling off, thereby simulating the actual use working condition.
2. The testing method of the device for testing the bonding force of the plastic part and the metal insert according to claim 1, characterized in that a threaded head is arranged at the tail end of the first stretcher connecting piece (1), and the first stretcher connecting piece (1) is fixedly connected with the plastic joint (4) with the metal insert through the threaded head.
3. The method for testing the device for testing the bonding force of the plastic part and the metal insert according to claim 1, wherein the bottom of the clamp body (501) is provided with a connecting protrusion (503), the center of the connecting protrusion (503) is provided with an internal threaded hole (504), the top of the second stretcher connecting piece (6) is provided with a threaded head, and the second stretcher connecting piece (6) is fixedly connected with the internal threaded hole (504) of the clamp body (501) through the threaded head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910860065.6A CN110736699B (en) | 2019-09-11 | 2019-09-11 | Device for testing binding force between plastic part and metal insert and testing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910860065.6A CN110736699B (en) | 2019-09-11 | 2019-09-11 | Device for testing binding force between plastic part and metal insert and testing method thereof |
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| Publication Number | Publication Date |
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| CN110736699A CN110736699A (en) | 2020-01-31 |
| CN110736699B true CN110736699B (en) | 2022-10-14 |
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| CN201910860065.6A Active CN110736699B (en) | 2019-09-11 | 2019-09-11 | Device for testing binding force between plastic part and metal insert and testing method thereof |
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| CN1340389A (en) * | 2000-08-31 | 2002-03-20 | 贵州凯撒铝业有限公司 | Technology for drawing plastics-lined composite metal pipe with sandwich transition structure material |
| US6550343B2 (en) * | 2001-07-13 | 2003-04-22 | Westinghouse Air Brake Technologies Corporation | Method and apparatus for testing shear strength of rubber bonded to metal insert |
| CN201594067U (en) * | 2010-01-19 | 2010-09-29 | 李晓明 | Building binding tension tensile property detecting instrument |
| DE102011102055B8 (en) * | 2011-05-19 | 2013-04-25 | Eads Deutschland Gmbh | Device for testing a fiber composite component for contamination |
| CN102628790A (en) * | 2012-04-23 | 2012-08-08 | 金陵科技学院 | Testing device and method for bonding performance of fiber and mortar materials |
| CN203993611U (en) * | 2014-07-17 | 2014-12-10 | 浙江伟星新型建材股份有限公司 | A kind of adapter of plastic pull-out test fixture with metal insert |
| CN104111199B (en) * | 2014-07-31 | 2016-06-29 | 浙江伟星新型建材股份有限公司 | The method of testing of a kind of PUR heat resistance and device |
| CN204188508U (en) * | 2014-09-03 | 2015-03-04 | 江阴泰阳成索业有限公司 | Sleeve pipe pull-out force detector |
| CN105626648A (en) * | 2016-03-01 | 2016-06-01 | 银邦金属复合材料股份有限公司 | Connecting device for tensile test of welding connector and tensile method |
| CN105973801A (en) * | 2016-06-23 | 2016-09-28 | 扬州赛尔达尼龙制造有限公司 | Test method for stretching and peeling of plastic-metal composite material |
| CN107478572B (en) * | 2017-07-11 | 2020-05-08 | 浙江大学 | System for measuring viscosity of prepreg, probe device and measuring method thereof |
| CN107884138B (en) * | 2017-10-31 | 2019-09-13 | 无锡市永兴金属软管有限公司 | A kind of detection method of metal hose and connector tension intensity |
| CN108152124B (en) * | 2018-02-06 | 2023-06-27 | 沈阳航空航天大学 | Method and device for detecting tensile failure temperature of material |
| CN108507942B (en) * | 2018-06-22 | 2020-12-01 | 长安大学 | Device and method for testing asphalt cohesion and adhesion |
| CN209027974U (en) * | 2018-09-26 | 2019-06-25 | 天津市塑料研究所有限公司 | Medical tubing and connector adhesive strength detection device |
| CN109556950B (en) * | 2018-12-29 | 2022-02-15 | 广州市白云化工实业有限公司 | Sealant aging and stretching device |
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