CN106501100A - Electric power pylon tower material toughness appraisal procedure and device - Google Patents
Electric power pylon tower material toughness appraisal procedure and device Download PDFInfo
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- CN106501100A CN106501100A CN201610821590.3A CN201610821590A CN106501100A CN 106501100 A CN106501100 A CN 106501100A CN 201610821590 A CN201610821590 A CN 201610821590A CN 106501100 A CN106501100 A CN 106501100A
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- 239000000463 material Substances 0.000 title claims abstract description 204
- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000007704 transition Effects 0.000 claims abstract description 77
- 238000009863 impact test Methods 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 238000012360 testing method Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 10
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- 230000035939 shock Effects 0.000 description 8
- 238000004080 punching Methods 0.000 description 5
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- 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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
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Abstract
The invention provides a kind of electric power pylon tower material toughness appraisal procedure and device.Wherein the method comprises the steps：Impact test will be carried out under different preset temperatures from the multiple samples of electric power pylon tower material identical, and calculate the sample mean ballistic work under each preset temperature；According to the ductile-brittle transiton curve that the sample mean ballistic work under each preset temperature determines electric power pylon tower material；Ductile-brittle transiton curve according to electric power pylon tower material determines the ductile-brittle transition temperature value of electric power pylon tower material；By the ductile-brittle transition temperature value of electric power pylon tower material be compared using temperature value, if the ductile-brittle transition temperature value of electric power pylon tower material is less than using temperature value, it is determined that electric power pylon tower material toughness at a temperature of the use is qualified.The toughness appraisal procedure that the present invention is provided can carry out toughness assessment to electric power pylon tower material at low temperature.
Description
Technical field
The present invention relates to T ＆ D Technology field, in particular to a kind of electric power pylon tower material toughness appraisal procedure and
Device.
Background technology
Extra-high voltage technology is to build global energy internet, realize the basis that energy resources are planned as a whole exploitation, configure and utilize,
Because only that the extra-high voltage AC and DC electrical network that electric pressure is high, transmission capacity is big, fed distance is remote could realize global each continent
Between, the energy conveying in continent between Energy Base and load center.
At present, China is actively developing UHV Transmission Engineering.Compared with mid low latitude region, part UHV transmission
Engineering is in high latitude area, and winter temperature is very low, and the lowest temperature is reachable less than -40 DEG C.Under -40 DEG C of cryogenic conditions, commonly use
Transmission tower angle steel toughness and plasticity be all greatly lowered, easily occur angle steel fracture phenomenon, and then affect transmission of electricity iron
The stability of tower.Therefore, application of the toughness assessment of electric power pylon tower material for electric power pylon tower material in low temperature environment has weight
Want meaning.But, at present, therefore the method that also do not carry out toughness assessment to electric power pylon tower material at low temperature is unfavorable for defeated
The application at low ambient temperatures of electric tower material of iron tower.
Content of the invention
In consideration of it, the present invention proposes a kind of electric power pylon tower material toughness appraisal procedure and device, it is intended to solve at present not
The problem that electric power pylon tower material toughness under low temperature can be estimated.
On one side, the present invention proposes a kind of electric power pylon tower material toughness appraisal procedure, and the method comprises the steps：
Average impact work(determines step, will carry out impact examination from the multiple samples of electric power pylon tower material identical under different preset temperatures
Test, and calculate the sample mean ballistic work under each preset temperature；Ductile-brittle transiton curve determines step, according to each preset temperature
Under sample mean ballistic work determine the ductile-brittle transiton curve of electric power pylon tower material；Ductile-brittle transition temperature value determines step, according to
The ductile-brittle transiton curve of electric power pylon tower material determines the ductile-brittle transition temperature value of electric power pylon tower material；Toughness appraisal procedure, will be defeated
The ductile-brittle transition temperature value of electric tower material of iron tower be compared using temperature value, if the ductile-brittle transition temperature of electric power pylon tower material
Value is less than and uses temperature value, it is determined that electric power pylon tower material toughness at a temperature of the use is qualified.
Further, in above-mentioned electric power pylon tower material toughness appraisal procedure, average impact work(is in each preset temperature
Under carry out impact test each sample ballistic work and divided by sample number.
Further, in above-mentioned electric power pylon tower material toughness appraisal procedure, ductile-brittle transiton curve determines that step is further wrapped
Include：The ductile-brittle transiton curve of electric power pylon tower material is defined as ductile-brittle transition temperature-average impact work(curve, electric power pylon tower material
The ordinate of ductile-brittle transiton curve represents that sample mean ballistic work, the abscissa of the ductile-brittle transiton curve of electric power pylon tower material are represented
Each preset temperature.
Further, in above-mentioned electric power pylon tower material toughness appraisal procedure, toughness appraisal procedure is further included：Will transmission of electricity
The peak of tower material of iron tower ductile-brittle transiton curve is defined as upper mounting plate value a, by the ductile-brittle transiton curve of electric power pylon tower material most
Low spot is defined as lower platform value b；According to the ordinate value c that formula c=b+k (a-b) calculates ductile-brittle transiton point, wherein, k is toughness
Coefficient；Ordinate value c according to ductile-brittle transiton point determines the horizontal stroke of ductile-brittle transiton point on electric power pylon tower material ductile-brittle transiton curve
Coordinate value, the abscissa value of ductile-brittle transiton point are ductile-brittle transition temperature value.
Further, in above-mentioned electric power pylon tower material toughness appraisal procedure, determination step is further included：If transmission of electricity iron
The ductile-brittle transition temperature value of tower tower material is more than or equal to using temperature value, it is determined that electric power pylon tower material toughness at a temperature of the use
Unqualified.
Ductile-brittle transition temperature value of the present invention by determination electric power pylon tower material, and the ductile-brittle transiton by electric power pylon tower material
Temperature value be compared using temperature value, if the ductile-brittle transition temperature value of electric power pylon tower material is less than using temperature value,
Determine that electric power pylon tower material toughness under each preset temperature is qualified, the method can carry out the tough of electric power pylon tower material at low temperature
Property assessment, be conducive to the application at low ambient temperatures of electric power pylon tower material.
On the other hand, the invention allows for a kind of electric power pylon tower material toughness apparatus for evaluating, the device includes：Average punching
Work(determining module is hit, for impact test will be carried out from the multiple samples of electric power pylon tower material identical under different preset temperatures,
And calculate the sample mean ballistic work under each preset temperature；Ductile-brittle transiton curve determining module, for according to each default temperature
Sample mean ballistic work under degree determines the ductile-brittle transiton curve of electric power pylon tower material；Ductile-brittle transition temperature value determining module, uses
In the ductile-brittle transition temperature value for determining electric power pylon tower material according to the ductile-brittle transiton curve of electric power pylon tower material；Toughness assesses mould
Block, for by the ductile-brittle transition temperature value of electric power pylon tower material be compared using temperature value, if electric power pylon tower material
Ductile-brittle transition temperature value is less than and uses temperature value, it is determined that electric power pylon tower material toughness at a temperature of the use is qualified.
Further, in above-mentioned electric power pylon tower material toughness apparatus for evaluating, average impact work(is in each preset temperature
Under carry out impact test each sample ballistic work and divided by sample number.
Further, in above-mentioned electric power pylon tower material toughness apparatus for evaluating, ductile-brittle transiton curve determining module is additionally operable to：Defeated
The ductile-brittle transiton curve of electric tower material of iron tower is defined as ductile-brittle transition temperature-average impact work(curve, electric power pylon tower material tough crisp
The ordinate of transition curve represents that sample mean ballistic work, the abscissa of the ductile-brittle transiton curve of electric power pylon tower material represent each pre-
If temperature.
Further, in above-mentioned electric power pylon tower material toughness apparatus for evaluating, toughness evaluation module includes：Determine the first submodule
Block, for the peak of electric power pylon tower material ductile-brittle transiton curve is defined as upper mounting plate value a, by the tough crisp of electric power pylon tower material
The minimum point of transition curve is defined as lower platform value b；Calculating sub module, for calculating tough crisp turn according to formula c=b+k (a-b)
The ordinate value c of height, wherein, k is tough factor；Determine the second submodule, for the ordinate value c according to ductile-brittle transiton point
Determine that the abscissa value of ductile-brittle transiton point, the abscissa value of ductile-brittle transiton point are on electric power pylon tower material ductile-brittle transiton curve
Ductile-brittle transition temperature value.
Further, in above-mentioned electric power pylon tower material toughness apparatus for evaluating, toughness evaluation module is additionally operable to：If transmission of electricity iron
The ductile-brittle transition temperature value of tower tower material is more than or equal to using temperature value, it is determined that electric power pylon tower material toughness at a temperature of the use
Unqualified.
The present invention determines the ductile-brittle transition temperature of electric power pylon tower material by ductile-brittle transition temperature determining module, then by tough
Property evaluation module by the ductile-brittle transition temperature value of electric power pylon tower material be compared using temperature value, if tough crisp turn of sample
Alternating temperature angle value is less than using temperature value, it is determined that electric power pylon tower material toughness at a temperature of the use is qualified, and the device can be
The toughness assessment of electric power pylon tower material is carried out under low temperature, is conducive to the application at low ambient temperatures of electric power pylon tower material.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this area
Technical staff will be clear from understanding.Accompanying drawing is only used for the purpose for illustrating preferred embodiment, and is not considered as to the present invention
Restriction.And in whole accompanying drawing, it is denoted by the same reference numerals identical part.In the accompanying drawings：
Fig. 1 is the flow chart of electric power pylon tower material toughness appraisal procedure provided in an embodiment of the present invention；
Fig. 2 is electric power pylon tower material preset temperature impact test curve synoptic diagram provided in an embodiment of the present invention；
Fig. 3 is the another flow chart of electric power pylon tower material toughness appraisal procedure provided in an embodiment of the present invention；
Fig. 4 is the structured flowchart of electric power pylon tower material toughness apparatus for evaluating provided in an embodiment of the present invention；
Fig. 5 is that ductile-brittle transition temperature determines mould in electric power pylon tower material toughness apparatus for evaluating provided in an embodiment of the present invention
The structured flowchart of block.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure and should not be by embodiments set forth here
Limited.On the contrary, there is provided these embodiments are able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.It should be noted that in the case where not conflicting, embodiment in the present invention and
Feature in embodiment can be mutually combined.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
Embodiment of the method：
Referring to Fig. 1, Fig. 1 is the flow chart of electric power pylon tower material toughness appraisal procedure provided in an embodiment of the present invention.As schemed
Shown, the method comprises the steps：
Average impact work(determines step S1, will enter under different preset temperatures from the multiple samples of electric power pylon tower material identical
Row impact test, and calculate the sample mean ballistic work under each preset temperature.
Specifically, the parameter of multiple samples is identical with the parameter of electric power pylon tower material, and wherein, parameter can include：Material,
Diameter, shape, wall thickness etc..Sample can be chosen for 3～5.Different preset temperatures can be chosen according to actual conditions,
In the present embodiment, in the different preset temperature, highest can be 20 DEG C, and minimum can be -70 DEG C, also, adjacent test
Temperature difference between temperature is less than or equal to 10 DEG C.The impact test that multiple samples are carried out can be carried out by shock machine, should
Different preset temperatures can be preset on shock machine.When the test temperature of shock machine often reaches one
During preset temperature, the shock machine carries out ballistic work test to each sample simultaneously；Can also be that the shock machine is reached often
To a preset temperature under ballistic work test is carried out to each sample one by one successively.
Average impact work(is to carry out each sample the ballistic work of impact test under each preset temperature and divided by examination
The number of sample.Specifically, under a certain preset temperature, the ballistic work addition of each sample number again divided by sample obtains
The average impact work(of multiple samples under the preset temperature.As different preset temperatures is for multiple, therefore average impact work(is also many
Individual.
In the present embodiment, as the parameter of each sample is identical with the parameter of electric power pylon tower material, so, in each default temperature
Sample mean ballistic work under degree is identical with the average impact work(of the electric power pylon tower material under each preset temperature.
During test, 3～5 samples are put in shock machine, set the different preset temperature of impact test, can
Think 20 DEG C, 10 DEG C, 0 DEG C, -10 DEG C, -20 DEG C etc..Start shock machine, make test temperature reach the first preset temperature, such as
20 DEG C, impact test is carried out simultaneously to each sample, the ballistic work of each sample after impact test terminates, is read, by each
The ballistic work of sample is added number again divided by sample, tries to achieve and record the average punching of the multiple samples under the first preset temperature
Hit work(.Then, restart shock machine, make test temperature reach the second preset temperature, such as 10 DEG C, each sample is impacted
Test, reads the ballistic work of each sample, by the ballistic work addition of each sample number again divided by sample, tries to achieve and remembers
The average impact work(of multiple samples of the record under the second preset temperature.It is repeated according to different tests temperature set in advance
Test procedure is stated, the average impact work(of the multiple samples under variant preset temperature is obtained.
Ductile-brittle transiton curve determines step S2, determines electric power pylon tower according to the sample mean ballistic work under each preset temperature
The ductile-brittle transiton curve of material.
Specifically, initially set up rectangular coordinate system, by the average impact work(described point of the multiple samples under each preset temperature in
Each point is connected by the rectangular coordinate system with smooth curve.
Ductile-brittle transition temperature value determines step S3, and the ductile-brittle transiton curve according to electric power pylon tower material determines electric power pylon tower
The ductile-brittle transition temperature value of material.
Specifically, the ductile-brittle transiton point of electric power pylon tower material is determined on the ductile-brittle transiton curve of electric power pylon tower material,
Corresponding ductile-brittle transition temperature value is found from ductile-brittle transiton curve according to the ductile-brittle transiton point.Wherein, electric power pylon tower material
Ductile-brittle transiton point represents is to there occurs transformation in the toughness and fragility of the electric power pylon tower material, when being less than ductile-brittle transiton temperature
During angle value, electric power pylon tower material fragility is larger；When higher than ductile-brittle transition temperature value, electric power pylon tower material toughness is larger.
It is the ductile-brittle transition temperature value of sample according to the ductile-brittle transition temperature value that ductile-brittle transiton curve is determined, due to each examination
The parameter of sample is identical with the parameter of electric power pylon tower material, so the ductile-brittle transition temperature value of sample is equal to the tough of electric power pylon tower material
Crisp transition temperature value.
Toughness appraisal procedure S4, by the ductile-brittle transition temperature value of electric power pylon tower material be compared using temperature value, such as
The ductile-brittle transition temperature value of fruit electric power pylon tower material is less than and uses temperature value, it is determined that electric power pylon tower material uses temperature value at this
Lower toughness is qualified.If the ductile-brittle transition temperature value of electric power pylon tower material is more than or equal to uses temperature value, it is determined that electric power pylon
Tower material toughness at a temperature of the use is unqualified.
Specifically, using temperature value be electric power pylon tower material actually used area lowest temperature angle value.Work as electric power pylon
The ductile-brittle transition temperature value of tower material is less than during using temperature value, then it represents that tower material toughness when this uses temperature value is qualified.When
The ductile-brittle transition temperature value of electric power pylon tower material is more than or equal to during using temperature value, then it represents that the tower material is when this uses temperature value
Toughness is unqualified.
In the present embodiment, by determining the ductile-brittle transiton curve of electric power pylon tower material, determined according to the ductile-brittle transiton curve
Go out the ductile-brittle transition temperature value of electric power pylon tower material, judge electric power pylon tower material using temperature further according to the ductile-brittle transition temperature value
Whether the toughness under degree is qualified, and the method can accurately test electric power pylon tower material tough implementations at low temperature, it is achieved that right
The assessment of electric power pylon tower material toughness under low temperature, and then the design and crash analysis for low temp area electric power pylon provides theory
Foundation and technical support, are conducive to the application at low ambient temperatures of electric power pylon tower material, and solving at present can not be to defeated under low temperature
The problem that electric tower material of iron tower toughness is estimated, also, the method is simple, convenient, it is easy to accomplish.
Referring to Fig. 2, Fig. 2 illustrates for electric power pylon tower material preset temperature impact test curve provided in an embodiment of the present invention
Figure.As illustrated, ductile-brittle transiton curve determines that step is further included：The ductile-brittle transiton curve of electric power pylon tower material is defined as tough
Crisp transition temperature-average impact work(curve, the ordinate of the ductile-brittle transiton curve of electric power pylon tower material represent that sample mean impacts
Work(, the abscissa of the ductile-brittle transiton curve of electric power pylon tower material represent each preset temperature.
Specifically, the rectangular coordinate system of the ductile-brittle transiton curve of electric power pylon tower material is set up, and abscissa is above-mentioned average punching
Hit work(and determine the variant preset temperature that determines in step, ordinate is determined in step for above-mentioned average impact work(to be determined
Multiple samples average impact work(, i.e., the average impact work(of multiple electric power pylon tower materials.
As can be seen that in the present embodiment, the ductile-brittle transiton curve of electric power pylon tower material is defined as ductile-brittle transition temperature-flat
The ordinate of the ductile-brittle transiton curve of electric power pylon tower material is represented sample mean ballistic work, electric power pylon by ballistic work curve
The abscissa of the ductile-brittle transiton curve of tower material represents each preset temperature, can make average impact of the sample under different preset temperatures
Work(is more short and sweet to be showed, and is conducive to the toughness of electric power pylon tower material to assess.
Referring to Fig. 3, Fig. 3 is the another flow chart of electric power pylon tower material toughness appraisal procedure provided in an embodiment of the present invention.
As illustrated, ductile-brittle transition temperature value determines that step is further included：
The peak of electric power pylon tower material ductile-brittle transiton curve is defined as upper mounting plate value a, by electric power pylon by step S31
The minimum point of tower material ductile-brittle transiton curve is defined as lower platform value b；
Specifically, upper mounting plate value a is the maximum averagely punching in average impact work(of multiple samples under different preset temperatures
Work(is hit, lower platform value b is the minimum average B configuration ballistic work in average impact work(of multiple samples under different preset temperatures.
Step S32, according to the ordinate value c that formula c=b+k (a-b) calculates ductile-brittle transiton point, wherein, k is toughness system
Number；
Specifically, a for above-mentioned steps being obtained and the value of b are brought in formula c=b+k (a-b), in the hope of the value of c.Its
In, tough factor k is tough factor, represents toughness properties remaining.The value of k can be 10%～50%, it is preferable that the value of k
For 15%, 20%, 30%, 40%, 50%.
Step S33, the ordinate value c according to ductile-brittle transiton point determine tough crisp on electric power pylon tower material ductile-brittle transiton curve
The abscissa value of transition point, the abscissa value of ductile-brittle transiton point are ductile-brittle transition temperature value.
Specifically, on electric power pylon tower material ductile-brittle transiton curve, the ordinate value c for crossing ductile-brittle transiton point is drawn parallel to horizontal stroke
The straight line of coordinate, the straight line and the tough crisp curve intersection of electric power pylon tower material at first point, this first point ductile-brittle transiton for sample
The ductile-brittle transiton point of point, i.e. electric power pylon tower material, crosses straight line of first strokes and dots perpendicular to abscissa, and intersects at the with abscissa
2 points, the value of the corresponding abscissa of second point is the ductile-brittle transition temperature value of sample, i.e. electric power pylon tower material ductile-brittle transition temperature
Value.
As can be seen that in the present embodiment, by determining upper mounting plate value a and lower platform value b, and bringing the value of a and b into formula
C=b+k (a-b) obtains c, then determines electric power pylon tower material ductile-brittle transition temperature value by c values, and the method is simple, accurate, favorably
Assess in the toughness to electric power pylon tower material.
In sum, the present embodiment enough accurately tests electric power pylon tower material tough implementations at low temperature, it is achieved that to low
The assessment of the lower electric power pylon tower material toughness of temperature, so for low temp area electric power pylon design and crash analysis provide theory according to
According to and technical support, be conducive to the application at low ambient temperatures of electric power pylon tower material, also, the method be simple, convenient, it is easy to be real
Existing.
Device embodiment：
Referring to Fig. 4, Fig. 4 is the structured flowchart of electric power pylon tower material toughness apparatus for evaluating provided in an embodiment of the present invention.Such as
Shown in figure, the device includes：Average impact work(determining module 100, ductile-brittle transiton curve determining module 200, tough crisp equipment temperature
Value determining module 300 and toughness evaluation module 400.Wherein, average impact work(determining module 100 be used for will be with electric power pylon tower material
The multiple samples of identical carry out impact test under different preset temperatures, and calculate the punching of the sample mean under each preset temperature
Hit work(.Ductile-brittle transiton curve determining module 200 is used for determining electric power pylon according to the sample mean ballistic work under each preset temperature
The ductile-brittle transiton curve of tower material.Ductile-brittle transition temperature value determining module 300 is used for bent according to the ductile-brittle transiton of electric power pylon tower material
Line determines the ductile-brittle transition temperature value of electric power pylon tower material.Toughness evaluation module 400 is used for tough crisp turn of electric power pylon tower material
Alternating temperature angle value be compared using temperature value, if the ductile-brittle transition temperature value of electric power pylon tower material is less than using temperature value,
Then determine that electric power pylon tower material toughness under the use is qualified.Wherein, the specific implementation process of the device is referring to said method reality
The explanation in example is applied, the present embodiment will not be described here.
As can be seen that in the present embodiment, determining the tough crisp of electric power pylon tower material by ductile-brittle transiton curve determining module 200
Transition curve, according to the ductile-brittle transition temperature value that the ductile-brittle transiton curve determines electric power pylon tower material, according to the ductile-brittle transiton temperature
Angle value judges whether electric power pylon tower material toughness at service temperatures is qualified, and the device can accurately test electric power pylon tower material
Tough implementations at low temperature, it is achieved that the assessment to electric power pylon tower material toughness under low temperature, and then be low temp area transmission of electricity iron
The design and crash analysis of tower provides theoretical foundation and technical support, be conducive to electric power pylon tower material at low ambient temperatures should
With.
In above-described embodiment, average impact work(is the impact of each sample for carrying out impact test under each preset temperature
Work(and divided by sample number.Specifically, under a certain preset temperature, the ballistic work of each sample is added again divided by sample
Number, that is, obtain the average impact work(of sample under the preset temperature, and preset temperature is multiple, therefore average impact work(is also for multiple.
As can be seen that in the present embodiment, by the average impact work(of the calculating sample of average impact work(determining module 100, and
And test error is reduced, it is ensured that the accuracy of result of the test with the average impact work(described point of sample in rectangular coordinate system.
In above-described embodiment, ductile-brittle transiton curve determining module 200 is additionally operable to：The ductile-brittle transiton curve of electric power pylon tower material
It is defined as ductile-brittle transition temperature-average impact work(curve, the ordinate of the ductile-brittle transiton curve of electric power pylon tower material represents sample
Average impact work(, the abscissa of the ductile-brittle transiton curve of electric power pylon tower material represent each preset temperature.Ductile-brittle transiton in the device
The specific implementation process of curve determining module is no longer gone to live in the household of one's in-laws on getting married referring to the explanation in said method embodiment, the present embodiment here
State.
As can be seen that in the present embodiment, confirming module 200 by tough crisp turn of electric power pylon tower material by ductile-brittle transiton curve
Varied curve is defined as ductile-brittle transition temperature-average impact work(curve, can make average impact of the sample under different preset temperatures
Work(is more short and sweet to be showed, and is conducive to the toughness of electric power pylon tower material to assess.
Referring to Fig. 5, Fig. 5 is ductile-brittle transiton temperature in electric power pylon tower material toughness apparatus for evaluating provided in an embodiment of the present invention
The structured flowchart of angle value determining module.As illustrated, ductile-brittle transition temperature value determining module 300 can include：Determine the first son
Module 310, the second submodule 330 of calculating sub module 320 and determination.Wherein it is determined that the first submodule 310 is used for electric power pylon
The peak of tower material ductile-brittle transiton curve is defined as upper mounting plate value a, by the minimum point of the ductile-brittle transiton curve of electric power pylon tower material
It is defined as lower platform value b.Calculating sub module 320 is used for the ordinate value for calculating ductile-brittle transiton point according to formula c=b+k (a-b)
C, wherein, k is tough factor.Determine that the second submodule 330 is used for according to the ordinate value c of ductile-brittle transiton point in electric power pylon tower
Determine on material ductile-brittle transiton curve that the abscissa value of ductile-brittle transiton point, the abscissa value of ductile-brittle transiton point are ductile-brittle transition temperature
Value.Wherein, in the device ductile-brittle transition temperature value determining module specific implementation process referring to the explanation in said method embodiment
, the present embodiment will not be described here.
As can be seen that in the present embodiment, by determining that the first submodule 310 determines upper mounting plate value a and lower platform value b, and
Formula c=b+k (a-b) into is brought the value of a and b by calculating sub module 320 and obtains c, then by determining the second submodule 330c
Value determines electric power pylon tower material ductile-brittle transition temperature value, and the method is simple, accurate, is conducive to commenting the toughness of electric power pylon tower material
Estimate.
In the various embodiments described above, toughness evaluation module 340 is additionally operable to：If the ductile-brittle transition temperature value of electric power pylon tower material
It is more than or equal to and uses temperature value, it is determined that electric power pylon tower material toughness at a temperature of the use is unqualified.
As can be seen that in the present embodiment, by toughness evaluation module 340 by the ductile-brittle transition temperature value of electric power pylon tower material
It is compared with preset temperature value, if the ductile-brittle transition temperature value of electric power pylon tower material is more than or equal to uses temperature value, it is determined that
Electric power pylon tower material toughness at a temperature of the use is unqualified, and the method can carry out the toughness of electric power pylon tower material at low temperature
Assessment, is conducive to the application at low ambient temperatures of electric power pylon tower material.
In sum, the present embodiment can accurately test electric power pylon tower material tough implementations at low temperature, it is achieved that right
The assessment of electric power pylon tower material toughness under low temperature, and then the design and crash analysis for low temp area electric power pylon provides theory
Foundation and technical support, are conducive to the application at low ambient temperatures of electric power pylon tower material.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (10)
1. a kind of electric power pylon tower material toughness appraisal procedure, it is characterised in that comprise the steps：
Average impact work(determines step, will be impacted under different preset temperatures from the multiple samples of electric power pylon tower material identical
Test, and calculate the sample mean ballistic work under each described preset temperature；
Ductile-brittle transiton curve determines step, determines the transmission of electricity according to the sample mean ballistic work under each preset temperature
The ductile-brittle transiton curve of tower material of iron tower；
Ductile-brittle transition temperature value determines step, and the ductile-brittle transiton curve according to the electric power pylon tower material determines the electric power pylon
The ductile-brittle transition temperature value of tower material；
Toughness appraisal procedure, by the ductile-brittle transition temperature value of the electric power pylon tower material be compared using temperature value, if
The ductile-brittle transition temperature value of the electric power pylon tower material is less than the use temperature value, it is determined that the electric power pylon tower material is at this
At a temperature of the use, toughness is qualified.
2. electric power pylon tower material toughness appraisal procedure according to claim 1, it is characterised in that
The average impact work(is to carry out each sample the ballistic work of impact test under each described preset temperature and remove
Number with the sample.
3. electric power pylon tower material toughness appraisal procedure according to claim 1, it is characterised in that the ductile-brittle transiton curve
Determine that step is further included：
The ductile-brittle transiton curve of the electric power pylon tower material is defined as ductile-brittle transition temperature-average impact work(curve, the transmission of electricity
The ordinate of the ductile-brittle transiton curve of tower material of iron tower represents the sample mean ballistic work, tough crisp turn of the electric power pylon tower material
The abscissa of varied curve represents each preset temperature.
4. electric power pylon tower material toughness appraisal procedure according to claim 1, it is characterised in that the ductile-brittle transition temperature
Value determines that step is further included：
The peak of the electric power pylon tower material ductile-brittle transiton curve is defined as upper mounting plate value a, by the electric power pylon tower material
The minimum point of ductile-brittle transiton curve be defined as lower platform value b；
According to the ordinate value c that formula c=b+k (a-b) calculates ductile-brittle transiton point, wherein, k is tough factor；
Ordinate value c according to the ductile-brittle transiton point determines the ductile-brittle transiton on electric power pylon tower material ductile-brittle transiton curve
The abscissa value of point, the abscissa value of the ductile-brittle transiton point are the ductile-brittle transition temperature value.
5. electric power pylon tower material toughness appraisal procedure according to claim 1, it is characterised in that the toughness appraisal procedure
Further include：
If the ductile-brittle transition temperature value of the electric power pylon tower material is more than or equal to the use temperature value, it is determined that the transmission of electricity
Tower material of iron tower toughness at a temperature of the use is unqualified.
6. a kind of electric power pylon tower material toughness apparatus for evaluating, it is characterised in that include：
Average impact work(determining module (100), for will be from the multiple samples of electric power pylon tower material identical in different preset temperatures
Under carry out impact test, and calculate the sample mean ballistic work under each described preset temperature；
Ductile-brittle transiton curve determining module (200), for true according to the sample mean ballistic work under each preset temperature
The ductile-brittle transiton curve of the fixed electric power pylon tower material；
Ductile-brittle transition temperature value determining module (300), for determining institute according to the ductile-brittle transiton curve of the electric power pylon tower material
State the ductile-brittle transition temperature value of electric power pylon tower material；
Toughness evaluation module (400), for by the ductile-brittle transition temperature value of the electric power pylon tower material with carried out using temperature value
Relatively, if the ductile-brittle transition temperature value of the electric power pylon tower material is less than the use temperature value, it is determined that the transmission of electricity iron
Tower tower material toughness at a temperature of the use is qualified.
7. electric power pylon tower material toughness apparatus for evaluating according to claim 6, it is characterised in that
The average impact work(is to carry out each sample the ballistic work of impact test under each described preset temperature and remove
Number with the sample.
8. electric power pylon tower material toughness apparatus for evaluating according to claim 6, it is characterised in that the ductile-brittle transiton curve
Determining module (200) is additionally operable to：
The ductile-brittle transiton curve of the sample is defined as ductile-brittle transition temperature-average impact work(curve, the electric power pylon tower material
The ordinate of ductile-brittle transiton curve represent the sample mean ballistic work, the abscissa table of the ductile-brittle transiton curve of the sample
Show each preset temperature.
9. electric power pylon tower material toughness apparatus for evaluating according to claim 6, it is characterised in that the ductile-brittle transition temperature
Determining module (300) includes：
Determine the first submodule (310), upper flat for the peak of the electric power pylon tower material ductile-brittle transiton curve to be defined as
The minimum point of the ductile-brittle transiton curve of the electric power pylon tower material is defined as lower platform value b by platform value a；
Calculating sub module (320), for calculating the ordinate value c of ductile-brittle transiton point according to formula c=b+k (a-b), wherein, k is
Tough factor；
Determine the second submodule (330), for according to the ordinate value c of the ductile-brittle transiton point tough crisp turn in electric power pylon tower material
Determine on varied curve that the abscissa value of the ductile-brittle transiton point, the abscissa value of the ductile-brittle transiton point are the ductile-brittle transiton
Temperature value.
10. electric power pylon tower material toughness apparatus for evaluating according to claim 6, it is characterised in that the toughness assesses mould
Block (400) is additionally operable to：
If the ductile-brittle transition temperature value of the electric power pylon tower material is more than or equal to the use temperature value, it is determined that the transmission of electricity
Tower material of iron tower toughness at a temperature of the use is unqualified.
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| CN201610821590.3A CN106501100A (en) | 2016-09-13 | 2016-09-13 | Electric power pylon tower material toughness appraisal procedure and device |
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| CN201610821590.3A CN106501100A (en) | 2016-09-13 | 2016-09-13 | Electric power pylon tower material toughness appraisal procedure and device |
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