CN108318337A - A kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging treatment process - Google Patents
A kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging treatment process Download PDFInfo
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- CN108318337A CN108318337A CN201810099512.6A CN201810099512A CN108318337A CN 108318337 A CN108318337 A CN 108318337A CN 201810099512 A CN201810099512 A CN 201810099512A CN 108318337 A CN108318337 A CN 108318337A
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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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
- G01N3/40—Investigating hardness or rebound hardness
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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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
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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
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
Abstract
The invention discloses a kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging treatment process, include the following steps：S1, sampling：The ferrite type heat resisting steel of a length of 1M, a diameter of 30 55cm are sampled, surface clean must be carried out before making, reduces influence of the follow-up high temperature to ferrite type heat resisting steel；S2, vacuum high-temperature room：High temperature is simplest detection method, is used in various fields.Under existing process conditions, the external influence factor of reduction ferrite type heat resisting steel may be implemented, low-power consumption and high-reliability, manufacture craft is advanced, and vacuum high-temperature room temperature is heated at high temperature ferrite type heat resisting steel using gradually incremental trend, and within effective time, detect that the variation of ferrite type heat resisting steel effectively can persistently keep temperature-resistant when wherein vacuum high-temperature room temperature reaches setting peak, the influence power of enterprise can be effectively improved, there is good promotional value.
Description
Technical field
The present invention relates to ferrite type heat resisting steel, more specifically more particularly to a kind of thermoelectricity station-service Novel iron ferritic type
Heat resisting steel high-temperature aging treatment process.
Background technology
With the growth year by year of thermal power plant's run time, the aged unit of extended active duty is continuously increased, high-temperature component creep
Damage and material aging degree are on the rise, and Injury accident happens occasionally, wherein the booster of the heating surface tubes such as superheater, reheater
Problem is the main reason for leading to thermal power generation unit non-programmed halt always.According to statistics, 2/3 or so of station boiler accident is all
It is caused by heating surface pipe explosion accident.And unit parameter was continuously improved in recent years, the failure accidents of Power Station Boiler Heating Surface pipe
Have the tendency that rising, serious influence is caused on the safe operation of unit and economy.Therefore, old-age group of thermal power plant machine is solved
The life appraisal and operational safety sex chromosome mosaicism of group are extremely urgent.
Traditional residue lifetime estimation method is not very reliable, especially for it is long when predicting residual useful life, it is existing
Method may will produce the error of an order of magnitude or more, and want the reliable power station of Development of Novel high with ferrite type heat resisting steel
Warm element residue lifetime estimation method, it is necessary to deeply rest in related military service Fine Texture of Material under high-temperature and high-stress environment first
The development law of structure and creep impairment.For this purpose, it is proposed that a kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging
Treatment process.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of thermoelectricity station-service Novel iron proposed
Ferrite type heat resisting steel is placed on vacuum high-temperature room by ferritic type heat resisting steel high-temperature aging treatment process compared with the prior art
In be because, the characteristic of vacuum, under existing process conditions, may be implemented reduce ferrite type heat resisting steel ectocine because
Element, low-power consumption and high-reliability, manufacture craft is advanced, and vacuum high-temperature room temperature uses gradually incremental trend to ferrite type
Heat resisting steel is heated at high temperature, and within effective time, detects the variation of ferrite type heat resisting steel, wherein vacuum high-temperature room temperature
When degree reaches setting peak, it effectively can persistently keep temperature-resistant, the influence power of enterprise can be effectively improved, have fine
Promotional value.
To achieve the above object, the present invention provides the following technical solutions：A kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel
High-temperature aging treatment process, includes the following steps：
S1, sampling：The ferrite type heat resisting steel of a length of 1M, a diameter of 30-55cm are sampled, table must be carried out before making
Face is cleaned, and influence of the follow-up high temperature to ferrite type heat resisting steel is reduced；
S2, vacuum high-temperature room：High temperature is simplest detection method, is used in various fields.Its general device is true by (1)
Sky pump, which pumps hot room inner air, to be expelled on the outside of hot room；(2) heat gas raw material is made to be injected by precision apparatus true
In outage greenhouse, and the heating source of vacuum high-temperature chamber interior is coordinated to use；(3) wherein vacuum high-temperature chamber interior temperature setting be
560 DEG C -760 DEG C, time 40min, and temperature is that gradually incremental trend increases, and sample is placed on vacuum high-temperature chamber interior
Inside the fixing bolt at the high-temperature tensile testing machine both ends of installation；
S3, thermostatic control：By in vacuum high-temperature room chamber constant temperature semiconductor laser and vacuum high-temperature room incubation cavity are installed
Heat-conducting block in structure combines, and carries out continuing holding when can reach vacuum high-temperature chamber interior temperature 760 DEG C；
S4, synchrotron radiation light source detection method：During placing sample, generally require to comment the init state of sample
Estimate, present technology is mainly using synchronous sigmatron as excitation light source technology.In synchronous sigmatron at BL13W1 lines station
Upper progress and when acting on sample surfaces, fine, real-time structural analysis is provided to the process of the whole life cycle of sample, into
And observe sample globular carbide size；
S5, tensile strength, elongation detection：After above-mentioned operation, to be tried in drawing by high temperature by the sample after high-temerature creep
Sample tests machine as testing agency, is stretched to the material of sample.Stretching technique is using high-temperature tensile testing machine material
The both ends of material are fixed, and are measured in real time to tensile strength, elongation by synchrotron radiation light source, and using imaging hand
Section is micro- fault imaging (XMCT), and imaging method is in-line X-ray phase contrast imaging method；
S6, hardness determination：After figure forming is completed in high temperature, tensile strength, elongation detection, then with Leeb Hardness Tester to compacted
The lee ' hardness for becoming sample is tested, and used test method is according to ASTM A956-2006《It is hard to test steel product Richter scale
The test method of degree》Complete entire high-temperature aging processing；
S7, mathematical simulation, analysis：Then use Matlab/Ansys mathematical softwares to the data of Mechanics Performance Testing, microcosmic group
The rule for knitting differentiation carries out mathematical simulation, analysis, establishes heterogeneous microstructure and develops the mathe-matical map between Typical physical performance
Relationship.
Preferably, in hardness determination step, Leeb Hardness Tester is mounted on high-temperature vacuum ceiling end, and acts perpendicularly to sample
Surface, and hardness determination number is up to thousand times or more.
Preferably, in tensile strength, elongation detecting step, high-temperature tensile testing machine is 1000 to the drawing numbers of sample
More than secondary.
The technique effect and advantage of the present invention：Compared with the prior art, ferrite type heat resisting steel is placed on vacuum high-temperature
It is because the ectocine for reducing ferrite type heat resisting steel may be implemented under existing process conditions in the characteristic of vacuum in room
Factor, low-power consumption and high-reliability, manufacture craft is advanced, and vacuum high-temperature room temperature uses gradually incremental trend to ferrite
Type heat resisting steel is heated at high temperature, and within effective time, detects the variation of ferrite type heat resisting steel, wherein vacuum high-temperature room
When temperature reaches setting peak, it effectively can persistently keep temperature-resistant, the influence power of enterprise can be effectively improved, have very
Good promotional value.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
The every other embodiment obtained is put, shall fall within the protection scope of the present invention.
Embodiment
A kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging treatment process, includes the following steps：
S1, sampling：The ferrite type heat resisting steel of a length of 1M, a diameter of 30-55cm are sampled, table must be carried out before making
Face is cleaned, and influence of the follow-up high temperature to ferrite type heat resisting steel is reduced；
S2, vacuum high-temperature room：High temperature is simplest detection method, is used in various fields.Its general device is true by (1)
Sky pump, which pumps hot room inner air, to be expelled on the outside of hot room；(2) heat gas raw material is made to be injected by precision apparatus true
In outage greenhouse, and the heating source of vacuum high-temperature chamber interior is coordinated to use；(3) wherein vacuum high-temperature chamber interior temperature setting be
560 DEG C -760 DEG C, time 40min, and temperature is that gradually incremental trend increases, and sample is placed on vacuum high-temperature chamber interior
Inside the fixing bolt at the high-temperature tensile testing machine both ends of installation；
S3, thermostatic control：By in vacuum high-temperature room chamber constant temperature semiconductor laser and vacuum high-temperature room incubation cavity are installed
Heat-conducting block in structure combines, and carries out continuing holding when can reach vacuum high-temperature chamber interior temperature 760 DEG C；
S4, synchrotron radiation light source detection method：During placing sample, generally require to comment the init state of sample
Estimate, present technology is mainly using synchronous sigmatron as excitation light source technology.In synchronous sigmatron at BL13W1 lines station
Upper progress and when acting on sample surfaces, fine, real-time structural analysis is provided to the process of the whole life cycle of sample, into
And observe sample globular carbide size；
S5, tensile strength, elongation detection：After above-mentioned operation, to be tried in drawing by high temperature by the sample after high-temerature creep
Sample tests machine as testing agency, is stretched to the material of sample.Stretching technique is using high-temperature tensile testing machine material
The both ends of material are fixed, and are measured in real time to tensile strength, elongation by synchrotron radiation light source, and using imaging hand
Section is micro- fault imaging (XMCT), and imaging method is in-line X-ray phase contrast imaging method；
S6, hardness determination：After figure forming is completed in high temperature, tensile strength, elongation detection, then with Leeb Hardness Tester to compacted
The lee ' hardness for becoming sample is tested, and used test method is according to ASTM A956-2006《It is hard to test steel product Richter scale
The test method of degree》Complete entire high-temperature aging processing；
S7, mathematical simulation, analysis：Then use Matlab/Ansys mathematical softwares to the data of Mechanics Performance Testing, microcosmic group
The rule for knitting differentiation carries out mathematical simulation, analysis, establishes heterogeneous microstructure and develops the mathe-matical map between Typical physical performance
Relationship.
In summary：A kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging treatment process provided by the invention,
Compared with the prior art, ferrite type heat resisting steel is placed in vacuum high-temperature room is because of the characteristic of vacuum, in existing work
Under the conditions of skill, the external influence factor for reducing ferrite type heat resisting steel, low-power consumption and high-reliability may be implemented, manufacture craft is first
Into, and vacuum high-temperature room temperature is heated at high temperature ferrite type heat resisting steel using gradually incremental trend, and when effective
In, detect that the variation of ferrite type heat resisting steel can effectively be held when wherein vacuum high-temperature room temperature reaches setting peak
Continuing insurance, it is temperature-resistant to hold, and can effectively improve the influence power of enterprise, has good promotional value.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (3)
1. a kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging treatment process, it is characterised in that：Include the following steps：
S1, sampling：The ferrite type heat resisting steel of a length of 1M, a diameter of 30-55cm are sampled, table must be carried out before making
Face is cleaned, and influence of the follow-up high temperature to ferrite type heat resisting steel is reduced；
S2, vacuum high-temperature room：High temperature is simplest detection method, is used in various fields.Its general device is true by (1)
Sky pump, which pumps hot room inner air, to be expelled on the outside of hot room；(2) heat gas raw material is made to be injected by precision apparatus true
In outage greenhouse, and the heating source of vacuum high-temperature chamber interior is coordinated to use；(3) wherein vacuum high-temperature chamber interior temperature setting be
560 DEG C -760 DEG C, time 40min, and temperature is that gradually incremental trend increases, and sample is placed on vacuum high-temperature chamber interior
Inside the fixing bolt at the high-temperature tensile testing machine both ends of installation；
S3, thermostatic control：By in vacuum high-temperature room chamber constant temperature semiconductor laser and vacuum high-temperature room incubation cavity are installed
Heat-conducting block in structure combines, and carries out continuing holding when can reach vacuum high-temperature chamber interior temperature 760 DEG C；
S4, synchrotron radiation light source detection method：During placing sample, generally require to comment the init state of sample
Estimate, present technology is mainly using synchronous sigmatron as excitation light source technology.In synchronous sigmatron at BL13W1 lines station
Upper progress and when acting on sample surfaces, fine, real-time structural analysis is provided to the process of the whole life cycle of sample, into
And observe sample globular carbide size；
S5, tensile strength, elongation detection：After above-mentioned operation, to be tried in drawing by high temperature by the sample after high-temerature creep
Sample tests machine as testing agency, is stretched to the material of sample.Stretching technique is using high-temperature tensile testing machine material
The both ends of material are fixed, and are measured in real time to tensile strength, elongation by synchrotron radiation light source, and using imaging hand
Section is micro- fault imaging (XMCT), and imaging method is in-line X-ray phase contrast imaging method；
S6, hardness determination：After figure forming is completed in high temperature, tensile strength, elongation detection, then with Leeb Hardness Tester to compacted
The lee ' hardness for becoming sample is tested, and used test method is according to ASTM A956-2006《It is hard to test steel product Richter scale
The test method of degree》Complete entire high-temperature aging processing；
S7, mathematical simulation, analysis：Then use Matlab/Ansys mathematical softwares to the data of Mechanics Performance Testing, microcosmic group
The rule for knitting differentiation carries out mathematical simulation, analysis, establishes heterogeneous microstructure and develops the mathe-matical map between Typical physical performance
Relationship.
2. a kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging treatment process according to claim 1, special
Sign is：In hardness determination step, Leeb Hardness Tester is mounted on high-temperature vacuum ceiling end, and acts perpendicularly to sample surfaces, and
Hardness determination number is up to thousand times or more.
3. a kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging treatment process according to claim 1, special
Sign is：In tensile strength, elongation detecting step, high-temperature tensile testing machine is 1000 times or more to the drawing numbers of sample.
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| CN201810099512.6A CN108318337B (en) | 2018-02-01 | 2018-02-01 | High-temperature aging treatment process for novel ferrite heat-resistant steel for thermal power plant |
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| CN201810099512.6A CN108318337B (en) | 2018-02-01 | 2018-02-01 | High-temperature aging treatment process for novel ferrite heat-resistant steel for thermal power plant |
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