CN112458245A - Method for rapidly detecting performance of hot rolled ribbed steel bar on line through quenching - Google Patents
Method for rapidly detecting performance of hot rolled ribbed steel bar on line through quenching Download PDFInfo
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- CN112458245A CN112458245A CN202011228600.5A CN202011228600A CN112458245A CN 112458245 A CN112458245 A CN 112458245A CN 202011228600 A CN202011228600 A CN 202011228600A CN 112458245 A CN112458245 A CN 112458245A
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- 238000010791 quenching Methods 0.000 title claims abstract description 77
- 230000000171 quenching effect Effects 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 22
- 239000010959 steel Substances 0.000 title claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 34
- 238000005070 sampling Methods 0.000 claims abstract description 22
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 84
- 229910052698 phosphorus Inorganic materials 0.000 claims description 84
- 239000011574 phosphorus Substances 0.000 claims description 84
- 238000001816 cooling Methods 0.000 claims description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 42
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 21
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 21
- 238000010008 shearing Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009851 ferrous metallurgy Methods 0.000 abstract description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
-
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- 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
-
- 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
Abstract
The invention belongs to the technical field of ferrous metallurgy, in particular to a method for rapidly detecting the performance of a hot-rolled ribbed steel bar on line by quenching, which comprises the following steps: the method comprises the following steps: sampling the hot-rolled ribbed steel bar before the cut to length, and carrying out online quenching; step two: selecting different quenching media according to different specifications, brands and carbon equivalent requirements, and controlling the quenching time within 5-15 seconds; step three: and wiping the quenching medium on the surface of the sample to detect the sample. Compared with the prior art, the invention has the following outstanding advantages and effects: the judgment is accelerated, the delivery is carried out, and the cost is indirectly reduced by about 0.4 yuan/ton.
Description
Technical Field
The invention relates to the technical field of ferrous metallurgy, in particular to a method for rapidly detecting the performance of a hot-rolled ribbed steel bar on line through quenching.
Background
The detection performance of the general hot-rolled ribbed steel bar needs on-line sampling and off-line sample sending, the performance detection has 1-2 days of delay, in order to accelerate the performance judgment, fast delivery, inventory reduction and capital flow under the premise of meeting the standard requirement of the hot-rolled ribbed steel bar, the production cost is increased by about 0.4 yuan/ton after measuring and calculating the delivery delay of the deformed steel bar for one day, and the cost is indirectly reduced through on-line sampling, fast quenching, analyzing the relation between the performance and the conventional sampling, accelerating the judgment and the delivery, therefore, the patent comes.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a method for rapidly detecting the performance of a hot-rolled ribbed steel bar on line through quenching.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for rapidly detecting the performance of hot rolled ribbed steel bars on line through quenching is characterized by comprising the following steps:
the method comprises the following steps: sampling the hot-rolled ribbed steel bar before the cut to length, and carrying out online quenching;
step two: selecting different quenching media according to different specifications, brands and carbon equivalent requirements, and controlling the quenching time within 5-15 seconds;
step three: and wiping the quenching medium on the surface of the sample to detect the sample.
As a further preferable scheme, in the third step, the quenching medium is water; the water quality is required to be less than or equal to 3.34mg/l of total phosphorus, less than or equal to 0.36 mg/l of positive phosphorus, less than or equal to 0.36 mg/l of total inorganic phosphorus, less than or equal to 2.98 mg/l of organic phosphorus, less than or equal to 292.09mg/l of hardness, less than or equal to 292.09mg/l of chloride ions, less than or equal to 10 mg/l of suspended matters, less than or equal to 300 mg/l of nitrite, less than or equal to 0.50 mg/l of iron, less than or equal to 2530uS/cm of conductivity, 8.0-12.0 of PH value and less than or equal to 8.2; the water temperature requirement is as follows: 30 +/-10 ℃, and the water temperature requirement is as follows: 30 +/-10 ℃.
As a further preferred option, in step two, the carbon equivalent requirement ranges of different grades are: the carbon equivalent of 400MPa class is 0.40-0.52%, the carbon equivalent of 500MPa class is 0.44-0.54%, and the carbon equivalent of 600MPa class is 0.46-0.56%.
As a further preferable mode, in the second step, the quenching time is: class 400MPa class: 5-15s, class 500MPa class series: 4-14s, class at 600 MPa: 3-13 s.
As a further preferable scheme, the carbon equivalent of 400MPa class is 0.40-0.52%, when the temperature of an upper cooling bed is 900 +/-20 ℃, sampling is carried out at a double-length shearing position when the temperature is reduced to 500-550 ℃ through air cooling of the cooling bed, and the water quality requires that the total phosphorus content is less than or equal to 3.34mg/l, the positive phosphorus content is less than or equal to 0.36 mg/l, the total inorganic phosphorus content is less than or equal to 0.36 mg/l, the organic phosphorus content is less than or equal to 2.98 mg/l, the hardness is less than or equal to 292.09mg/l, the chloride ion is less than or equal to 292.09mg/l, the suspended matter is less than or equal to 10 mg/l, the nitrite is less than or equal to 300 mg/l, the iron content is less than or equal to 0.50 mg/l, the conductivity is less than or; the water temperature requirement is as follows: rapid quenching is carried out at 30 +/-10 ℃ for 1-10s, the carbon equivalent of 500MPa class is 0.44-0.54%, the temperature of an upper cooling bed is 1000 +/-20 ℃, sampling is carried out at a double-length shearing position when the temperature is reduced to 500-550 ℃ through air cooling of the cooling bed, the total phosphorus amount required by water quality is less than or equal to 3.34mg/l, the positive phosphorus content is less than or equal to 0.36 mg/l, the total inorganic phosphorus content is less than or equal to 0.36 mg/l, the organic phosphorus content is less than or equal to 2.98 mg/l, the hardness is less than or equal to 292.09mg/l, the chloride ion is less than or equal to 292.09mg/l, the suspended matter is less than or equal to 10 mg/l, the nitrite is less than or equal to 300 mg/l, the iron content is less than or equal to 0.50 mg/l, the conductivity is less than or equal to 2530; the water temperature requirement is as follows: rapid quenching is carried out at 30 +/-10 ℃ for 1-15s, the carbon equivalent of 600MPa class is 0.46-0.56%, the temperature of an upper cooling bed is 1000 +/-20 ℃, sampling is carried out at a double-length shearing position when the temperature is reduced to 500-550 ℃ through air cooling of the cooling bed, the total phosphorus amount required by water quality is less than or equal to 3.34mg/l, the positive phosphorus content is less than or equal to 0.36 mg/l, the total inorganic phosphorus content is less than or equal to 0.36 mg/l, the organic phosphorus content is less than or equal to 2.98 mg/l, the hardness is less than or equal to 292.09mg/l, the chloride ion is less than or equal to 292.09mg/l, the suspended matter is less than or equal to 10 mg/l, the nitrite is less than or equal to 300 mg/l, the iron content is less than or equal to 0.50 mg/l, the conductivity is less than or equal to 2530; the water temperature requirement is as follows: rapidly quenching at 30 +/-10 ℃ for 1-15s, and wiping the sample dry and then carrying out mechanical detection.
As a further preferable scheme, the carbon equivalent of 400MPa class is 0.40-0.52%, when the temperature of an upper cooling bed is 900 +/-20 ℃, sampling is carried out at a double-length shear position by air cooling to 500-550 ℃ through the cooling bed, and when the water quality requires 219mg/l of total phosphorus, 0.22 mg/l of positive phosphorus, 0.18 mg/l of total inorganic phosphorus, 2.63 mg/l of organic phosphorus, 192.18 mg/l of hardness, 208.13mg/l of chloride ions, 5mg/l of suspended matters, 120 mg/l of nitrite, 0.23 mg/l of iron, 1876uS/cm of conductivity, 8.9 of PH value and 1.75 of turbidity NTU; the method comprises the steps of rapidly quenching at the room temperature of 20 ℃, the water temperature of 30 ℃, wherein the quenching time is 4-5s at 10-14mm, the quenching time is 7-8s at 16-25mm, the quenching time is 10-11s at 28-40mm, the carbon equivalent of 500MPa class is 0.44-0.54%, sampling at a double-ruler shear position when the temperature of an upper cooling bed is 1000 ℃, and performing air cooling to 500-550 ℃ through a cooling bed, wherein the water quality requires 219mg/l of total phosphorus, 0.22 mg/l of positive phosphorus, 0.18 mg/l of total inorganic phosphorus, 2.63 mg/l of organic phosphorus, 192.18 mg/l of hardness, 208.13mg/l of chloride ions, 5mg/l of suspended matters, 120 mg/l of nitrite, 0.23 mg/l of iron, the conductivity of 1876uS/cm, the pH value of 8.9 and the turbidity of NTU 1.75; the method comprises the steps of rapidly quenching at the room temperature of 20 ℃, the water temperature of 30 ℃, wherein the quenching time is 4-5s at 10-14mm, 7-8s at 16-25mm, 11-12s at 28-40mm, the carbon equivalent of 600MPa class is 0.46-0.56%, sampling at a double-ruler shear position when the temperature of an upper cooling bed is 1000 ℃, and performing air cooling to 500-550 ℃ through a cooling bed, wherein the water quality requires 219mg/l of total phosphorus, 0.22 mg/l of positive phosphorus, 0.18 mg/l of total inorganic phosphorus, 2.63 mg/l of organic phosphorus, 192.18 mg/l of hardness, 208.13mg/l of chloride ions, 5mg/l of suspended matters, 120 mg/l of nitrite, 0.23 mg/l of iron, the conductivity of 1876uS/cm, the pH value of 8.9 and the turbidity NTU of 1.75; rapidly quenching at room temperature of 20 ℃ and water temperature of 30 ℃ for 5-7s at the quenching time of 10-14mm, 7-8s at the quenching time of 16-25mm and 11-12s at the quenching time of 28-40mm, and wiping the sample dry and then carrying out mechanical detection.
The on-line detection performance of the steel bar after quenching is equivalent to the mechanical performance index of natural aging treatment, and tests prove that the mechanical performance of the hot-rolled ribbed steel bar after being treated by the on-line quenching method is stable and meets the delivery condition; after adopting the scheme, compared with the prior art, the invention has the following outstanding advantages and effects: the judgment is accelerated, the delivery is carried out, and the cost is indirectly reduced by about 0.4 yuan/ton.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
A method for rapidly detecting the performance of hot rolled ribbed steel bars on line through quenching comprises the following steps:
the method comprises the following steps: sampling the hot-rolled ribbed steel bar before the cut to length, and carrying out online quenching;
step two: selecting different quenching media according to different specifications, brands and carbon equivalent requirements, and controlling the quenching time within 5-15 seconds;
step three: and wiping the quenching medium on the surface of the sample to detect the sample.
In the third step, the quenching medium is water; the water quality is required to be less than or equal to 3.34mg/l of total phosphorus, less than or equal to 0.36 mg/l of positive phosphorus, less than or equal to 0.36 mg/l of total inorganic phosphorus, less than or equal to 2.98 mg/l of organic phosphorus, less than or equal to 292.09mg/l of hardness, less than or equal to 292.09mg/l of chloride ions, less than or equal to 10 mg/l of suspended matters, less than or equal to 300 mg/l of nitrite, less than or equal to 0.50 mg/l of iron, less than or equal to 2530uS/cm of conductivity, 8.0-12.0 of PH value and less than or equal to 8.2; the water temperature requirement is as follows: 30 +/-10 ℃, and the water temperature requirement is as follows: 30 +/-10 ℃.
In the second step, the required ranges of carbon equivalent of different grades are as follows: the carbon equivalent of 400MPa class is 0.40-0.52%, the carbon equivalent of 500MPa class is 0.44-0.54%, and the carbon equivalent of 600MPa class is 0.46-0.56%.
In the second step, quenching time is as follows: class 400MPa class: 5-15s, class 500MPa class series: 4-14s, class at 600 MPa: 3-13 s.
Furthermore, when the carbon equivalent of 400MPa class is 0.40-0.52%, the temperature of the upper cooling bed is 900 +/-20 ℃, the sample is taken at a double-length shearing position when the temperature is reduced to 500-550 ℃ through air cooling of the cooling bed, and the water quality requires that the total phosphorus content is less than or equal to 3.34mg/l, the content of the positive phosphorus is less than or equal to 0.36 mg/l, the content of the total inorganic phosphorus is less than or equal to 0.36 mg/l, the content of the organic phosphorus is less than or equal to 2.98 mg/l, the hardness is less than or equal to 292.09mg/l, the chloride ion is less than or equal to 292.09mg/l, the suspended matter is less than or equal to 10 mg/l, the nitrite is less than or equal to 300 mg/l, the iron content is less than or equal to 0.50 mg/l, the conductivity; the water temperature requirement is as follows: rapid quenching is carried out at 30 +/-10 ℃ for 1-10s, the carbon equivalent of 500MPa class is 0.44-0.54%, the temperature of an upper cooling bed is 1000 +/-20 ℃, sampling is carried out at a double-length shearing position when the temperature is reduced to 500-550 ℃ through air cooling of the cooling bed, the total phosphorus amount required by water quality is less than or equal to 3.34mg/l, the positive phosphorus content is less than or equal to 0.36 mg/l, the total inorganic phosphorus content is less than or equal to 0.36 mg/l, the organic phosphorus content is less than or equal to 2.98 mg/l, the hardness is less than or equal to 292.09mg/l, the chloride ion is less than or equal to 292.09mg/l, the suspended matter is less than or equal to 10 mg/l, the nitrite is less than or equal to 300 mg/l, the iron content is less than or equal to 0.50 mg/l, the conductivity is less than or equal to 2530; the water temperature requirement is as follows: rapid quenching is carried out at 30 +/-10 ℃ for 1-15s, the carbon equivalent of 600MPa class is 0.46-0.56%, the temperature of an upper cooling bed is 1000 +/-20 ℃, sampling is carried out at a double-length shearing position when the temperature is reduced to 500-550 ℃ through air cooling of the cooling bed, the total phosphorus amount required by water quality is less than or equal to 3.34mg/l, the positive phosphorus content is less than or equal to 0.36 mg/l, the total inorganic phosphorus content is less than or equal to 0.36 mg/l, the organic phosphorus content is less than or equal to 2.98 mg/l, the hardness is less than or equal to 292.09mg/l, the chloride ion is less than or equal to 292.09mg/l, the suspended matter is less than or equal to 10 mg/l, the nitrite is less than or equal to 300 mg/l, the iron content is less than or equal to 0.50 mg/l, the conductivity is less than or equal to 2530; the water temperature requirement is as follows: rapidly quenching at 30 +/-10 ℃ for 1-15s, and wiping the sample dry and then carrying out mechanical detection.
Furthermore, when the carbon equivalent of 400MPa class is 0.40-0.52%, and the temperature of the upper cooling bed is 900 +/-20 ℃, sampling is carried out at a double-length shearing position when the cooling bed is cooled to 500-550 ℃ by air, and when the water quality requires that the total phosphorus content is 219mg/l, the positive phosphorus content is 0.22 mg/l, the total inorganic phosphorus content is 0.18 mg/l, the organic phosphorus content is 2.63 mg/l, the hardness is 192.18 mg/l, the chloride ion content is 208.13mg/l, the suspended matter is 5mg/l, the nitrite content is 120 mg/l, the iron content is 0.23 mg/l, the conductivity is 1876uS/cm, the pH value is 8.9, and the turbidity is 1.75; the method comprises the steps of rapidly quenching at the room temperature of 20 ℃, the water temperature of 30 ℃, wherein the quenching time is 4-5s at 10-14mm, the quenching time is 7-8s at 16-25mm, the quenching time is 10-11s at 28-40mm, the carbon equivalent of 500MPa class is 0.44-0.54%, sampling at a double-ruler shear position when the temperature of an upper cooling bed is 1000 ℃, and performing air cooling to 500-550 ℃ through a cooling bed, wherein the water quality requires 219mg/l of total phosphorus, 0.22 mg/l of positive phosphorus, 0.18 mg/l of total inorganic phosphorus, 2.63 mg/l of organic phosphorus, 192.18 mg/l of hardness, 208.13mg/l of chloride ions, 5mg/l of suspended matters, 120 mg/l of nitrite, 0.23 mg/l of iron, the conductivity of 1876uS/cm, the pH value of 8.9 and the turbidity of NTU 1.75; the method comprises the steps of rapidly quenching at the room temperature of 20 ℃, the water temperature of 30 ℃, wherein the quenching time is 4-5s at 10-14mm, 7-8s at 16-25mm, 11-12s at 28-40mm, the carbon equivalent of 600MPa class is 0.46-0.56%, sampling at a double-ruler shear position when the temperature of an upper cooling bed is 1000 ℃, and performing air cooling to 500-550 ℃ through a cooling bed, wherein the water quality requires 219mg/l of total phosphorus, 0.22 mg/l of positive phosphorus, 0.18 mg/l of total inorganic phosphorus, 2.63 mg/l of organic phosphorus, 192.18 mg/l of hardness, 208.13mg/l of chloride ions, 5mg/l of suspended matters, 120 mg/l of nitrite, 0.23 mg/l of iron, the conductivity of 1876uS/cm, the pH value of 8.9 and the turbidity NTU of 1.75; rapidly quenching at room temperature of 20 ℃ and water temperature of 30 ℃ for 5-7s at the quenching time of 10-14mm, 7-8s at the quenching time of 16-25mm and 11-12s at the quenching time of 28-40mm, and wiping the sample dry and then carrying out mechanical detection.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A method for rapidly detecting the performance of hot rolled ribbed steel bars on line through quenching is characterized by comprising the following steps:
the method comprises the following steps: sampling the hot-rolled ribbed steel bar before the cut to length, and carrying out online quenching;
step two: selecting different quenching media according to different specifications, brands and carbon equivalent requirements, and controlling the quenching time within 5-15 seconds;
step three: and wiping the quenching medium on the surface of the sample to detect the sample.
2. The method for rapidly detecting the performance of the hot rolled ribbed steel bar on line through quenching as claimed in claim 1, wherein the method comprises the following steps: in the third step, the quenching medium is water; the water quality is required to be less than or equal to 3.34mg/l of total phosphorus, less than or equal to 0.36 mg/l of positive phosphorus, less than or equal to 0.36 mg/l of total inorganic phosphorus, less than or equal to 2.98 mg/l of organic phosphorus, less than or equal to 292.09mg/l of hardness, less than or equal to 292.09mg/l of chloride ions, less than or equal to 10 mg/l of suspended matters, less than or equal to 300 mg/l of nitrite, less than or equal to 0.50 mg/l of iron, less than or equal to 2530uS/cm of conductivity, 8.0-12.0 of PH value and less than or equal to 8.2; the water temperature requirement is as follows: 30 +/-10 ℃.
3. The method for rapidly detecting the performance of the hot rolled ribbed steel bar on line through quenching as claimed in claim 1, wherein the method comprises the following steps: in the second step, the required ranges of carbon equivalent of different grades are as follows: the carbon equivalent of 400MPa class is 0.40-0.52%, the carbon equivalent of 500MPa class is 0.44-0.54%, and the carbon equivalent of 600MPa class is 0.46-0.56%.
4. The method for rapidly detecting the performance of the hot rolled ribbed steel bar on line through quenching as claimed in claim 1, wherein the method comprises the following steps: in the second step, the quenching time is as follows: class 400MPa class: 1-15s, class 500MPa class series: 1-15s, class at 600 MPa: 1-15 s.
5. The method for rapidly detecting the performance of the hot rolled ribbed steel bar on line through quenching as claimed in claim 1, wherein the method comprises the following steps: the carbon equivalent of 400MPa class is 0.40-0.52%, when the temperature of the cooling bed is 900 +/-20 ℃, the sample is taken at a double-length shearing position when the cooling bed is used for air cooling to 500-550 ℃, the total phosphorus content is required to be less than or equal to 3.34mg/l, the positive phosphorus content is less than or equal to 0.36 mg/l, the total inorganic phosphorus content is less than or equal to 0.36 mg/l, the organic phosphorus content is less than or equal to 2.98 mg/l, the hardness is less than or equal to 292.09mg/l, the chloride ion content is less than or equal to 292.09mg/l, the suspended matter is less than or equal to 10 mg/l, the nitrite is less than or equal to 300 mg/l, the iron content is less than or equal to 0.50 mg/l, the conductivity is less than or equal to 2530 uS/; the water temperature requirement is as follows: rapid quenching is carried out at 30 +/-10 ℃ for 1-10s, the carbon equivalent of 500MPa class is 0.44-0.54%, the temperature of an upper cooling bed is 1000 +/-20 ℃, sampling is carried out at a double-length shearing position when the temperature is reduced to 500-550 ℃ through air cooling of the cooling bed, the total phosphorus amount required by water quality is less than or equal to 3.34mg/l, the positive phosphorus content is less than or equal to 0.36 mg/l, the total inorganic phosphorus content is less than or equal to 0.36 mg/l, the organic phosphorus content is less than or equal to 2.98 mg/l, the hardness is less than or equal to 292.09mg/l, the chloride ion is less than or equal to 292.09mg/l, the suspended matter is less than or equal to 10 mg/l, the nitrite is less than or equal to 300 mg/l, the iron content is less than or equal to 0.50 mg/l, the conductivity is less than or equal to 2530; the water temperature requirement is as follows: rapid quenching is carried out at 30 +/-10 ℃ for 1-15s, the carbon equivalent of 600MPa class is 0.46-0.56%, the temperature of an upper cooling bed is 1000 +/-20 ℃, sampling is carried out at a double-length shearing position when the temperature is reduced to 500-550 ℃ through air cooling of the cooling bed, the total phosphorus amount required by water quality is less than or equal to 3.34mg/l, the positive phosphorus content is less than or equal to 0.36 mg/l, the total inorganic phosphorus content is less than or equal to 0.36 mg/l, the organic phosphorus content is less than or equal to 2.98 mg/l, the hardness is less than or equal to 292.09mg/l, the chloride ion is less than or equal to 292.09mg/l, the suspended matter is less than or equal to 10 mg/l, the nitrite is less than or equal to 300 mg/l, the iron content is less than or equal to 0.50 mg/l, the conductivity is less than or equal to 2530; the water temperature requirement is as follows: rapidly quenching at 30 +/-10 ℃ for 1-15s, and wiping the sample dry and then carrying out mechanical detection.
6. The method for rapidly detecting the performance of the hot rolled ribbed steel bar on line through quenching as claimed in claim 1, wherein the method comprises the following steps: the carbon equivalent of 400MPa class is 0.40-0.52%, when the temperature of the upper cooling bed is 900 +/-20 ℃, the sample is taken at a double-length shear position when the temperature is reduced to 500-550 ℃ by air cooling through the cooling bed, and when the water quality requires that the total phosphorus content is 219mg/l, the positive phosphorus content is 0.22 mg/l, the total inorganic phosphorus content is 0.18 mg/l, the organic phosphorus content is 2.63 mg/l, the hardness is 192.18 mg/l, the chloride ion content is 208.13mg/l, the suspended substance is 5mg/l, the nitrite is 120 mg/l, the iron content is 0.23 mg/l, the conductivity is 6uS/cm, the PH value is 8.9, and the turbidity is NTU 1871.75; the method comprises the steps of rapidly quenching at the room temperature of 20 ℃, the water temperature of 30 ℃, wherein the quenching time is 4-5s at 10-14mm, the quenching time is 7-8s at 16-25mm, the quenching time is 10-11s at 28-40mm, the carbon equivalent of 500MPa class is 0.44-0.54%, sampling at a double-ruler shear position when the temperature of an upper cooling bed is 1000 ℃, and performing air cooling to 500-550 ℃ through a cooling bed, wherein the water quality requires 219mg/l of total phosphorus, 0.22 mg/l of positive phosphorus, 0.18 mg/l of total inorganic phosphorus, 2.63 mg/l of organic phosphorus, 192.18 mg/l of hardness, 208.13mg/l of chloride ions, 5mg/l of suspended matters, 120 mg/l of nitrite, 0.23 mg/l of iron, the conductivity of 1876uS/cm, the pH value of 8.9 and the turbidity of NTU 1.75; the method comprises the steps of rapidly quenching at the room temperature of 20 ℃, the water temperature of 30 ℃, wherein the quenching time is 4-5s at 10-14mm, 7-8s at 16-25mm, 11-12s at 28-40mm, the carbon equivalent of 600MPa class is 0.46-0.56%, sampling at a double-ruler shear position when the temperature of an upper cooling bed is 1000 ℃, and performing air cooling to 500-550 ℃ through a cooling bed, wherein the water quality requires 219mg/l of total phosphorus, 0.22 mg/l of positive phosphorus, 0.18 mg/l of total inorganic phosphorus, 2.63 mg/l of organic phosphorus, 192.18 mg/l of hardness, 208.13mg/l of chloride ions, 5mg/l of suspended matters, 120 mg/l of nitrite, 0.23 mg/l of iron, the conductivity of 1876uS/cm, the pH value of 8.9 and the turbidity NTU of 1.75; rapidly quenching at room temperature of 20 ℃ and water temperature of 30 ℃ for 5-7s at the quenching time of 10-14mm, 7-8s at the quenching time of 16-25mm and 11-12s at the quenching time of 28-40mm, and wiping the sample dry and then carrying out mechanical detection.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09308906A (en) * | 1996-05-21 | 1997-12-02 | Kawasaki Steel Corp | Control cooling method for thick steel plate |
| CN1952199A (en) * | 2005-10-17 | 2007-04-25 | 马鞍山钢铁股份有限公司 | Niobium titanium -combined microalloying steel for cooling-control reinforced bar and method for producing same |
| CN1970817A (en) * | 2006-12-07 | 2007-05-30 | 武汉钢铁(集团)公司 | High-strength deformed steel bar and method of manufacturing same |
| CN101275197A (en) * | 2007-07-19 | 2008-10-01 | 天津钢铁有限公司 | High-strength rebar and manufacturing process thereof |
| CN202092612U (en) * | 2011-07-08 | 2011-12-28 | 李改兰 | Online quenching hardness detection device for metal card clothing |
| CN104975239A (en) * | 2015-06-30 | 2015-10-14 | 河北钢铁股份有限公司承德分公司 | Production method for British standard B500C straight twisted steel |
| CN107513663A (en) * | 2017-09-29 | 2017-12-26 | 四川德胜集团钒钛有限公司 | A kind of HRB500E high performance steels and its rolling mill practice |
| CN108103405A (en) * | 2017-12-29 | 2018-06-01 | 钢研晟华科技股份有限公司 | A kind of high-strength fireproof anti-seismic steel bar and its low cost preparation method |
| CN109536859A (en) * | 2018-10-24 | 2019-03-29 | 郑州明泰实业有限公司 | The method for quickly adjusting production technology by 7075 alloyed aluminum solution hardening effect of on-line checking |
-
2020
- 2020-11-06 CN CN202011228600.5A patent/CN112458245A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09308906A (en) * | 1996-05-21 | 1997-12-02 | Kawasaki Steel Corp | Control cooling method for thick steel plate |
| CN1952199A (en) * | 2005-10-17 | 2007-04-25 | 马鞍山钢铁股份有限公司 | Niobium titanium -combined microalloying steel for cooling-control reinforced bar and method for producing same |
| CN1970817A (en) * | 2006-12-07 | 2007-05-30 | 武汉钢铁(集团)公司 | High-strength deformed steel bar and method of manufacturing same |
| CN101275197A (en) * | 2007-07-19 | 2008-10-01 | 天津钢铁有限公司 | High-strength rebar and manufacturing process thereof |
| CN202092612U (en) * | 2011-07-08 | 2011-12-28 | 李改兰 | Online quenching hardness detection device for metal card clothing |
| CN104975239A (en) * | 2015-06-30 | 2015-10-14 | 河北钢铁股份有限公司承德分公司 | Production method for British standard B500C straight twisted steel |
| CN107513663A (en) * | 2017-09-29 | 2017-12-26 | 四川德胜集团钒钛有限公司 | A kind of HRB500E high performance steels and its rolling mill practice |
| CN108103405A (en) * | 2017-12-29 | 2018-06-01 | 钢研晟华科技股份有限公司 | A kind of high-strength fireproof anti-seismic steel bar and its low cost preparation method |
| CN109536859A (en) * | 2018-10-24 | 2019-03-29 | 郑州明泰实业有限公司 | The method for quickly adjusting production technology by 7075 alloyed aluminum solution hardening effect of on-line checking |
Non-Patent Citations (1)
| Title |
|---|
| 李光瀛等: ""高速重载钢轨的开发与PD3钢轨的组织性能"", 《2005年中国钢铁年会论文集》 * |
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