CN105842030A - Method for testing wire tensile strength - Google Patents
Method for testing wire tensile strength Download PDFInfo
- Publication number
- CN105842030A CN105842030A CN201610229381.XA CN201610229381A CN105842030A CN 105842030 A CN105842030 A CN 105842030A CN 201610229381 A CN201610229381 A CN 201610229381A CN 105842030 A CN105842030 A CN 105842030A
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- China
- Prior art keywords
- low
- wire
- temperature alloy
- terminal
- tensile strength
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Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Abstract
The invention discloses a method for testing wire tensile strength. The method comprises: striping the insulating layer of the wire end, dispersing a wire connection to be tested the tensile strength, preparing a low-temperature alloy and a casting mould, putting the prepared wire connection into the casting mould, casting the melting low-temperature alloy into the casting mould, taking out the wire connection with low-temperature alloy after cooling molding, performing local melting repair for the wire connection based on the test site, environment and construction installation equipment wherein the repair is not limited by the mold shape, repairing the connection to be conical based on the shape of the test equipment, placing the finished wire on a tensile testing machine to test tensile strength, and collecting the tensile strength data. The method uses the low temperature property of the low-temperature alloy, has wide range of application, can melt the low-temperature alloy without high-temperature furnace and heating equipment, has stable property and accurate tensile strength data, and is easy to promote. Moreover, the connection is easy to repair after molding because of low-temperature alloy.
Description
Technical field
The present invention relates to wire performance detection technique field, relate in particular to a kind of wire-break power test side
Method.
Background technology
In prior art, the most common method that the test of whole pull-off force of wire uses at present is gold utensil crimping
With resin cast method.Gold utensil crimping mainly according to the wire of different size size, selects suitable gold utensil to enter
Row crimping, tests at testing equipment enterprising row conductor pull-off force；Resin cast method, is by resin and terminal
Merge the most again in the test test of experimental facilities enterprising row conductor pull-off force.
But, in both method of testings, gold utensil crimping is relatively costly, and inconvenient operation, crimps process
The large-scale hydraulic means of middle needs crimps；Resin cast method, mechanical strength of resin is inadequate, and is not easily repaired, one
Denier resin joint does not mates with tooling device, and test preliminary preparation need to begin the beguine and it is necessary to will connect
Head cuts off casting resin the most again, during so should test in this way, needs to prepare longer wire, in order to avoid
Occurring that joint is improper, shear wire and exist, the whole pull-off force data of wire causing test are inaccurate, and
Waste of manpower, material resources, financial resources.How to make test result more accurately, how to reduce labor intensity, improve survey
Examination efficiency becomes this area heat subject in recent years.
Summary of the invention
The deficiency existed for prior art, it is an object of the invention to provide a kind of simple to operate, scope of application
Wide wire-break force test method.
The technical scheme realizing the object of the invention is: a kind of wire-break force test method, it is characterised in that: institute
The method of stating comprises the steps:
Step one: by the insulating barrier strip off of conducting wire end, the terminal that will do pull-off force scatters；
Step 2: prepare low-temperature alloy and casting die；
Step 3: put in casting die by off-the-shelf terminal, is cast to the low-temperature alloy of fusing
In casting die, molding to be cooled, take out the terminal with low-temperature alloy；
Step 4: according to test site, environment and tooling device, terminal is carried out local melting reparation,
Reparation can not be limited by mold shape, and according to testing equipment shape, repairs into the joint of vertebral body shape；
Step 5: the wire completed is placed on tensile testing machine and carries out pull-off force test；
Step 6: wire-break force data is collected.
In described step one, a length of mm of terminal.
In described step one, the terminal that will do pull-off force scatters and twists into fist shape, measures fist shape
The size of joint, calculates the approximate weight of described low-temperature alloy.
In described step 2, low-temperature alloy is melted in hot bath plus 10 30% chalybeates, prepare to water mold
Tool.
Described low-temperature alloy mass percent is: Bi 38～50%, Pb 25～31%, Sn 12.5～15%, In
12.5～16%, fusing point is 92 DEG C.
Described method also includes the low-temperature alloy reclaiming and having melted on the terminal of pull-off force test.
Have employed technique scheme, the present invention has following beneficial effect: (1) present invention utilizes low temperature to close
The low temperature properties of gold, applied widely, it is not necessary to low-temperature alloy just can be melted by high-temperature smelting pot and heater, and
Owing to being low-temperature alloy, therefore easily repairing after joint molding, and this experimental performance is stable, pull-off force data are accurate,
The most easily promote.
(2) terminal of the present invention scatters and twists into fist shape, adds the knot of terminal and low-temperature alloy
Making a concerted effort, terminal is simple to operate simultaneously, it is only necessary to the simple tool of vice etc just can be rapidly completed this
Operation.
(3), in the inventive method, the preparation operation of low-temperature alloy only needs water-bath or oil bath heater, will
Water or oil are heated beyond 92 DEG C i.e. fusible low-temperature alloy, are incubated and i.e. can ensure that low-temperature alloy in 35 minutes
Mobility, equipment is simple.
(4) present invention adds 10 30% chalybeates when being melted in hot bath by low-temperature alloy, improve low
The intensity (under room temperature, intensity is more than 30MPa, elongation percentage 3%, hardness 25HBS) of temperature alloy, just may be used after molding
To test immediately, save time.
(5) easily repair after the joint molding of the present invention, it is thus only necessary to a local heating is robbed, and repairs
Time can repair according to different tests equipment and field of employment to use in the way of local melting, repair and be not subject to
Mould limits, and repairs speed soon, is difficult to adhesion, and repairing effect is good, and flawless, fracture phenomenon occur,
Termination, product surface quality is good, bond strength is high.
(6) alloy strength of the present invention is high, is placed on tensile testing machine by the wire completed and carries out pull-off force survey
Examination, joint and low-temperature alloy binding site are stable, fracture is in the middle of wire, it is to avoid the feelings of fracture occurs in joint
Condition.
(7) low-temperature alloy used in the present invention is recyclable low-temperature alloy, and test is low after terminating
Temperature alloy can be cost-effective with efficient recovery.
Detailed description of the invention
(embodiment 1)
A kind of wire-break force test method of the present embodiment, it is characterised in that: described method comprises the steps:
Step one: wire preparation: by the insulating barrier strip off of conducting wire end, a length of mm of terminal,
The terminal that will do pull-off force scatters, and the terminal that will do pull-off force scatters and twists into fist shape, surveys
Measure the size of fist straight coupling, calculate the approximate weight of described low-temperature alloy.Low-temperature alloy mass percent
For: Bi 38～50%, Pb 25～31%, Sn 12.5～15%, In 12.5～16%.
Step 2: low-temperature alloy prepares: utilize heating in water bath or oil bath heater water or oil to be heated beyond
After 92 DEG C, low-temperature alloy ingot is put in container, melts in hot bath or oil bath, be incubated 35 minutes the most fusible
Change low-temperature alloy, add 10 30% chalybeates, prepare casting die.
Step 3: joint prepares: put in casting die by off-the-shelf terminal, by the low temperature of fusing
Alloy casting in casting die, molding to be cooled, take out the terminal with low-temperature alloy；
Step 4: joint reparation: according to test site, environment and tooling device, carries out local to terminal
Fusing is repaired, and reparation can not be limited by mold shape, and according to testing equipment shape, repairs into vertebral body shape
Joint；
Step 5: test: the wire completed is placed on tensile testing machine and carries out pull-off force test；
Step 6: wire-break force data is collected.
Particular embodiments described above, has been carried out the purpose of the present invention, technical scheme and beneficial effect the most in detail
Describe in detail bright, be it should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to
The present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done,
Should be included within the scope of the present invention.
Claims (6)
1. a wire-break force test method, it is characterised in that: described method comprises the steps:
Step one: by the insulating barrier strip off of conducting wire end, the terminal that will do pull-off force scatters；
Step 2: prepare low-temperature alloy and casting die；
Step 3: put in casting die by off-the-shelf terminal, is cast to the low-temperature alloy of fusing in casting die, molding to be cooled, takes out the terminal with low-temperature alloy；
Step 4: according to test site, environment and tooling device, terminal being carried out local melting reparation, reparation can not be limited by mold shape, and according to testing equipment shape, repair into the joint of vertebral body shape；
Step 5: the wire completed is placed on tensile testing machine and carries out pull-off force test；
Step 6: wire-break force data is collected.
2. according to wire-break force test method a kind of described in claim 1, it is characterised in that:
In described step one, a length of 120-150mm of terminal.
3. according to wire-break force test method a kind of described in claim 1, it is characterised in that:
In described step one, the terminal that will do pull-off force scatters and twists into fist shape, measures the size of fist straight coupling, calculates the approximate weight of described low-temperature alloy.
4. according to wire-break force test method a kind of described in claim 1, it is characterised in that:
In described step 2, low-temperature alloy is melted in hot bath plus 10-30% chalybeate, prepare casting die.
5. according to wire-break force test method a kind of described in claim 1, it is characterised in that: described low-temperature alloy mass percent is: Bi 38～50%, Pb 25～31%, Sn 12.5～15%, In 12.5～16%, fusing point is 92 DEG C.
6. according to wire-break force test method a kind of described in claim 1, it is characterised in that: described method also includes the low-temperature alloy reclaiming and having melted on the terminal of pull-off force test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229381.XA CN105842030A (en) | 2016-04-13 | 2016-04-13 | Method for testing wire tensile strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229381.XA CN105842030A (en) | 2016-04-13 | 2016-04-13 | Method for testing wire tensile strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105842030A true CN105842030A (en) | 2016-08-10 |
Family
ID=56597485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610229381.XA Pending CN105842030A (en) | 2016-04-13 | 2016-04-13 | Method for testing wire tensile strength |
Country Status (1)
| Country | Link |
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| CN (1) | CN105842030A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233143A (en) * | 2016-12-15 | 2018-06-29 | 戴尔菲技术公司 | For predicting the method for the intensity of ultrasonic weld joints |
| CN108233144A (en) * | 2016-12-15 | 2018-06-29 | 戴尔菲技术公司 | For predicting the method for the intensity of ultrasonic weld joints |
| CN110967357A (en) * | 2018-09-30 | 2020-04-07 | 浙江大学 | Method for preparing high-entropy alloy in high flux |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233143A (en) * | 2016-12-15 | 2018-06-29 | 戴尔菲技术公司 | For predicting the method for the intensity of ultrasonic weld joints |
| CN108233144A (en) * | 2016-12-15 | 2018-06-29 | 戴尔菲技术公司 | For predicting the method for the intensity of ultrasonic weld joints |
| US10578534B2 (en) | 2016-12-15 | 2020-03-03 | Aptiv Technologies Limited | Method to predict a strength of an ultrasonic weld-joint |
| CN110967357A (en) * | 2018-09-30 | 2020-04-07 | 浙江大学 | Method for preparing high-entropy alloy in high flux |
| CN110967358A (en) * | 2018-09-30 | 2020-04-07 | 浙江大学 | High-flux copper alloy preparation method |
| CN110967358B (en) * | 2018-09-30 | 2021-06-29 | 浙江大学 | High-flux copper alloy preparation method |
| CN110967357B (en) * | 2018-09-30 | 2021-07-09 | 浙江大学 | Method for preparing high-entropy alloy in high flux |
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Application publication date: 20160810 |
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