CN106353173B - The quick timeliness detection method of high-carbon steel wire rod - Google Patents
The quick timeliness detection method of high-carbon steel wire rod Download PDFInfo
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- CN106353173B CN106353173B CN201610809951.2A CN201610809951A CN106353173B CN 106353173 B CN106353173 B CN 106353173B CN 201610809951 A CN201610809951 A CN 201610809951A CN 106353173 B CN106353173 B CN 106353173B
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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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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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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
- G01N1/42—Low-temperature sample treatment, e.g. cryofixation
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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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Abstract
The invention discloses a kind of quick timeliness detection method of high-carbon steel wire rod, the method steps are as follows: first by 0~36h of wire rod sample natrual ageing of high-carbon steel；Again by wire rod sample in 121~149 DEG C of 6~16h of heating and thermal insulation；After the completion of heating, cooling wire rod sample；Then the reduction of area of wire rod sample is examined；Detect is that reduction of area and natrual ageing 30 days or more reduction of area are positively correlated.This method is on the basis of the diffusion velocity to high-carbon steel wire rod Natural Aging Process hydrogen atom is studied, ageing treatment is carried out to wire rod using the method for quick timeliness, the reduction of area performance of wire rod is detected after timeliness, the quick judgement and user's order for realizing wire rod quality are delivered in time.This method be for steel mill production high-carbon steel wire rod quick timeliness characterization processes, the wire rod sample by quick ageing treatment, directly progress reduction of area inspection, inspection result can accurate evaluation progress natrual ageing after wire rod mechanical property.
Description
Technical field
The present invention relates to a kind of heat treatment process of metal material, especially a kind of quick timeliness detection side of high-carbon steel wire rod
Method.
Background technique
High-carbon steel wire rod is mainly for the production of 1960MPa grades of bridge cable, and since C element content is higher, wire rod is rolled
Sorbitizing processing is carried out in the process, and cooling velocity is very fast, and internal hydrogen atom cannot spread escape in time, and inside wire rod
Transformation stress and thermal stress are larger, and plasticity is lower after wire rod rolling, and downstream user can not directly carry out drawing processing.So disk
The escape and stress release that carry out hydrogen by ag(e)ing process are needed after item rolling, improve wire rod plasticity.When mainly using nature at present
Efficacious prescriptions method, aging time are 30 days or more；Since natural aging time is longer, test of product performance, judgement cannot be completed in time
The reduction of area of product after natrual ageing can seriously affect order delivery.
Summary of the invention
When quick the technical problem to be solved in the present invention is to provide a kind of high-carbon steel wire rod that can effectively judge reduction of area
Imitate detection method.
In order to solve the above technical problems, method and step adopted by the present invention are as follows: first that the wire rod sample of high-carbon steel is natural
0~36h of timeliness；Again by wire rod sample in 121~149 DEG C of 6~16h of heating and thermal insulation；After the completion of heating, cooling wire rod sample；So
The reduction of area of wire rod sample is examined afterwards；Detect is that reduction of area and natrual ageing 30 days or more reduction of area are positively correlated.
Wire rod sample of the present invention is cooled to room temperature using air-cooled mode.
The beneficial effects of adopting the technical scheme are that the present invention is to high-carbon steel wire rod Natural Aging Process
On the basis of the diffusion velocity of hydrogen atom is studied, ageing treatment is carried out to wire rod using the method for quick timeliness, after timeliness
The reduction of area performance of wire rod is detected, the quick judgement and user's order for realizing wire rod quality are delivered in time.
The present invention be directed to the quick timeliness characterization processes of the high-carbon steel wire rod of steel mill's production, by quick ageing treatment
Wire rod sample, directly progress reduction of area inspection, inspection result can accurate evaluation carry out natrual ageing after wire rod mechanical property
Energy.Acid extraction is larger for timeliness influential effect in the present invention, and structural transformation occurs for the higher then wire rod of heating temperature,
Temperature is lower, and hydrogen atom can not spread escape completely, so by heating and temperature control in suitable range；Since carbon contains
Higher, cementite ratio increase in tissue after wire rod rolling is measured, and diffusion velocity of the hydrogen atom in ferrite and cementite is not
Together, it so the tissue according to wire rod is needed to determine heating time, has not only avoided energy waste but also hydrogen atom is made sufficiently to spread escape.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is wire rod drawing fracture apperance figure after quick timeliness in the embodiment of the present invention 1；
Fig. 2 is wire rod drawing fracture apperance figure after 30 days natrual ageing in the embodiment of the present invention 1；
Fig. 3 is wire rod drawing fracture apperance figure after quick timeliness in the embodiment of the present invention 3；
Fig. 4 is wire rod drawing fracture apperance figure after 30 days natrual ageing in the embodiment of the present invention 3.
Specific embodiment
The quick timeliness detection method of this high-carbon steel wire rod includes quick ag(e)ing process and detection process；The following institute of concrete technology
It states:
1, the weight percentage of the high-carbon steel wire rod chemical component are as follows: C0.85~0.91%, Si0.20~1.00%,
Mn0.60~0.90%, Cr0.25~0.35%, Al0.015~0.040%, P≤0.025%, S≤0.025%, V0.02~0.07%,
Cu≤0.20%, Ca≤0.0030%, remaining is Fe and inevitable impurity element.
2, quick ag(e)ing process: before A, carrying out quick ageing treatment, wire rod sample 0~36h of natural aging time,
B, the temperature in heating furnace is risen to 121~149 DEG C, then wire rod sample is placed in heating furnace, keep the temperature 6~16h.
Preferably adjust heating time according to wire rod specification (diameter) He Gangzhong carbon content: wire rod specification is bigger, wire rod center
The distance that hydrogen atom is diffused into wire rod surface is longer, and the required time is also more；Carbon content is higher, corresponding various carbide hydrogen
Trap quantity increases, and increases the difficulty of hydrogen diffusion, it is therefore desirable to which longer heating time guarantees that hydrogen is escaped completely.
C, after the completion of heating, wire rod sample is cooled to room temperature using air-cooled mode.
3, detection process: wire rod sample directly carries out reduction of area inspection, and inspection result being capable of accurate evaluation when carrying out nature
The mechanical property of wire rod after effect.When the reduction of area of wire rod sample reaches 30% or more after quick timeliness, batch is corresponded to
Wire rod can reach 30% or more by shrinkage behind 30 days and the above natrual ageing, meet downstream user drawing process and want
It asks；When the reduction of area of wire rod sample is lower than 30% after quick timeliness, the wire rod for corresponding to batch is natural by 30 days or more
Shrinkage is lower than 30% behind timeliness, it may appear that the case where grinding tool serious wear, drawing fracture.
Embodiment 1: the concrete technology of the quick timeliness detection method of this high-carbon steel wire rod is as described below.
Wire rod chemical component are as follows: C0.85%, Si1.00%, Mn0.80%, Cr0.30%, Al0.020%, P0.015%,
S0.010%, V0.02%, Cu0.005%, Ca0.0010%, remaining is Fe and inevitable impurity element；Wire rod Ф
12.5mm。
Characterization processes are as follows: then wire rod sample elder generation natural aging time 12h, then 121 DEG C of heat preservation 6h in heating furnace are used
Air-cooled mode is cooled to room temperature, and finally detecting reduction of area is 40%.
30 days back shrinkages 40.4% of batch wire rod natrual ageing corresponding to the present embodiment wire rod sample, drawing process is smooth.
Fig. 1 is wire rod drawing fracture apperance figure after the quick timeliness of wire rod sample, and Fig. 2 is wire rod drawing after 30 days natrual ageing of wire rod sample
Fracture apperance figure.By Fig. 1,2 as it can be seen that two fracture pars fibrosas and radiation area solid colour, boundary is unobvious, illustrate that radiation area is tough
Nest amount is also more, is that plasticity preferably shows.
Embodiment 2: the concrete technology of the quick timeliness detection method of this high-carbon steel wire rod is as described below.
Wire rod chemical component are as follows: C0.87%, Si0.20%, Mn0.60%, Cr0.25%, Al0.015%, P0.015%,
S0.009%, V0.04%, Cu0.009%, Ca0.0010%, remaining is Fe and inevitable impurity element；Specification is Ф
13mm。
Characterization processes are as follows: then wire rod sample elder generation natural aging time 7h, then 140 DEG C of heat preservation 8h in heating furnace are used
Air-cooled mode is cooled to room temperature, and finally detecting reduction of area is 33%.
30 days back shrinkages 32.4% of batch wire rod natrual ageing corresponding to the present embodiment wire rod sample, drawing process is suitable
Benefit.
Embodiment 3: the concrete technology of the quick timeliness detection method of this high-carbon steel wire rod is as described below.
Wire rod chemical component are as follows: C0.91%, Si0.50%, Mn0.90%, Cr0.35%, Al0.040%, P0.013%,
S0.011%, V0.07%, Cu0.004%, Ca0.0011%, remaining is Fe and inevitable impurity element；Specification is Ф
14mm。
Characterization processes are as follows: then wire rod sample elder generation natural aging time 25h, then 149 DEG C of heat preservation 11h in heating furnace are adopted
It is cooled to room temperature with air-cooled mode, finally detecting reduction of area is 28%.
30 days back shrinkages 28.2% of batch wire rod natrual ageing, drawing process process corresponding to the present embodiment wire rod sample
Grinding tool loss is serious, the case where drawing fracture occurs.Fig. 3 is wire rod drawing fracture apperance figure after the quick timeliness of wire rod sample, Fig. 4
It is wire rod drawing fracture apperance figure after 30 days natrual ageing of wire rod sample, by Fig. 3,4 as it can be seen that two fracture pars fibrosas and radiation area
Color is significantly different, and boundary is obvious, at this moment the bad characteristic feature of plasticity.
Embodiment 4: the concrete technology of the quick timeliness detection method of this high-carbon steel wire rod is as described below.
Wire rod chemical component are as follows: C0.89%, Si0.70%, Mn0.75%, Cr0.30%, Al0.021%, P0.013%,
S0.010%, V0.06%, Cu0.008%, Ca0.0009%, remaining is Fe and inevitable impurity element；Specification is Ф
12.5mm。
Characterization processes are as follows: then wire rod sample elder generation natural aging time 36h, then 130 DEG C of heat preservation 16h in heating furnace are adopted
It is cooled to room temperature with air-cooled mode, finally detecting reduction of area is 42%.
30 days back shrinkages 42.9% of batch wire rod natrual ageing corresponding to the present embodiment wire rod sample, drawing process is smooth.
Embodiment 5: the concrete technology of the quick timeliness detection method of this high-carbon steel wire rod is as described below.
Wire rod chemical component are as follows: C0.88%, Si0.82%, Mn0.68%, Cr0.31%, Al0.033%, P0.025%,
S0.025%, V 0.05%, Cu 0.20%, Ca0.0030%, remaining is Fe and inevitable impurity element；Specification is Ф
12.5mm。
Characterization processes are as follows: then wire rod sample elder generation natural aging time 0.5h, then 125 DEG C of heat preservation 15h in heating furnace are adopted
It is cooled to room temperature with air-cooled mode, finally detecting reduction of area is 27%.
30 days back shrinkages 27.6% of batch wire rod natrual ageing, drawing process process corresponding to the present embodiment wire rod sample
Grinding tool loss is serious, the case where drawing fracture occurs.
Embodiment 6: the concrete technology of the quick timeliness detection method of this high-carbon steel wire rod is as described below.
Wire rod chemical component are as follows: C0.91%, Si0.93%, Mn0.72%, Cr0.27%, Al0.018%, P0.018%,
S0.016%, V 0.03%, Cu 0.15%, Ca0.0023%, remaining is Fe and inevitable impurity element；Specification is Ф
13mm。
Characterization processes are as follows: the then first 145 DEG C of heat preservation 14h in heating furnace of wire rod sample are cooled to room using air-cooled mode
Temperature, finally detecting reduction of area is 36%.
30 days back shrinkages 35.6% of batch wire rod natrual ageing corresponding to the present embodiment wire rod sample, drawing process is smooth.
Claims (2)
1. a kind of quick timeliness detection method of high-carbon steel wire rod, which is characterized in that the method step are as follows: first by the disk of high-carbon steel
0~36h of sample natrual ageing；Again by wire rod sample in 121~149 DEG C of 6~16h of heating and thermal insulation；After the completion of heating, cooler pan
Bar sample；Then the reduction of area of wire rod sample is examined；The detection method shows reduction of area and natrual ageing 30 days or more
Reduction of area is positively correlated；The weight percentage of the high-carbon steel wire rod chemical component are as follows: C0.85~0.91%, Si0.20~
1.00%, Mn0.60~0.90%, Cr0.25~0.35%, Al0.015~0.040%, P≤0.025%, S≤0.025%, V0.02~
0.07%, Cu≤0.20%, Ca≤0.0030%, remaining is Fe and inevitable impurity element.
2. according to the quick timeliness detection method of high-carbon steel wire rod described in claim 1, it is characterised in that: the wire rod sample uses
Air-cooled mode is cooled to room temperature.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107202790A (en) * | 2017-06-13 | 2017-09-26 | 南通市产品质量监督检验所 | A kind of high-carbon steel wire rod tissue grain size ranking method |
| CN108950174A (en) * | 2018-07-31 | 2018-12-07 | 河钢股份有限公司承德分公司 | Online aging treatment method and device after a kind of wire rod collection volume |
| CN109762982A (en) * | 2019-03-21 | 2019-05-17 | 张家港荣盛炼钢有限公司 | The artificial aging processing method of carbon steel wire rod with high |
| CN113481360A (en) * | 2021-07-02 | 2021-10-08 | 大连环新精密特钢股份有限公司 | Method and device for quickly aging spring steel wire by hot oil |
| CN114262784A (en) * | 2021-12-31 | 2022-04-01 | 嘉兴市新大金属有限公司 | Low-temperature artificial aging treatment technology for high-carbon steel sample |
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