CN110579392A - Mechanical property detection method for HRB400E steel - Google Patents
Mechanical property detection method for HRB400E steel Download PDFInfo
- Publication number
- CN110579392A CN110579392A CN201910818408.2A CN201910818408A CN110579392A CN 110579392 A CN110579392 A CN 110579392A CN 201910818408 A CN201910818408 A CN 201910818408A CN 110579392 A CN110579392 A CN 110579392A
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- CN
- China
- Prior art keywords
- steel
- hrb400e
- hrb400e steel
- mechanical property
- detecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- 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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
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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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- 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
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
Abstract
The invention discloses a mechanical property detection method of HRB400E steel, which is implemented according to the following steps: step 1, naturally cooling the HRB400E steel after rolling until the temperature of the HRB400E steel is not more than 200 ℃, and then cooling by water; step 2, performing tensile test, bending test and metallographic analysis on the water-cooled HRB400E steel; and 3, recording data of a tensile test, a bending test and metallographic analysis, and solving the problem of long detection time of the mechanical property of the steel in the prior art.
Description
Technical Field
The invention belongs to the technical field of mechanical property detection of steel, and relates to a mechanical property detection method of HRB400E steel.
Background
with the rapid development of steel enterprises, higher requirements are provided for the speed of detection and assay of steel, and how to improve the speed of detection and assay is a key step of rapid development of the steel enterprises. For HRB400E steel (three-grade steel) with the specification of phi more than 20mm, after rolling is completed, the requirement of GB/T228.1-2010 can be met, and the tensile test needs 3-5 h.
in this process, the temperature of the steel sample is the primary limiting condition for the inspection. For a sample with the specification of phi more than 20mm, 3-5 hours are needed from the completion of rolling to natural cooling and then to room temperature. How to shorten the time by 3-5 h is the bottleneck of increasing the testing speed.
Disclosure of Invention
the invention aims to provide a method for detecting the mechanical property of HRB400E steel, which solves the problem of long time for detecting the mechanical property of the steel in the prior art.
The invention adopts the technical scheme that the mechanical property detection method of the HRB400E steel is implemented according to the following steps:
Step 1, naturally cooling the HRB400E steel after rolling until the temperature of the HRB400E steel is not more than 200 ℃, and then cooling by water;
Step 2, performing tensile test, bending test and metallographic analysis on the water-cooled HRB400E steel;
And 3, recording data of a tensile test, a bending test and a metallographic analysis.
the invention is also characterized in that:
The step 1 is implemented according to the following steps:
Step 1.1, placing the HRB400E steel after rolling in a vacant place;
Step 1.2, detecting the temperature of the HRB400E steel until the temperature of the HRB400E steel is not more than 200 ℃, taking out the HRB400E steel and carrying out water cooling.
And (3) detecting the temperature of the HRB400E steel by using an infrared thermometer in the step 1.2.
And (3) performing the tensile test in the step 2 by adopting a microcomputer control electro-hydraulic servo universal testing machine.
And (3) performing a bending test by using a steel bar bending tester in the step 2.
The invention has the beneficial effects that: the invention aims to provide a method for detecting the mechanical property of HRB400E steel, which solves the problem of long detection time of the mechanical property of the steel in the prior art, improves the detection and testing speed, enables the rolled steel to be put in storage in time, reduces the occupancy rate of sites, plants and equipment, and is simple and practical.
Detailed Description
the present invention will be described in detail with reference to the following embodiments.
1. A mechanical property detection method of HRB400E steel (tertiary steel) is implemented according to the following steps:
Step 1, naturally cooling the HRB400E steel after rolling until the temperature of the HRB400E steel is not more than 200 ℃, and then cooling by water; (ii) a
wherein the step 1 is implemented according to the following steps:
Step 1.1, placing the HRB400E steel after rolling in a vacant place;
step 1.2, detecting the temperature of the HRB400E steel until the temperature of the HRB400E steel is not more than 200 ℃, taking out the HRB400E steel and carrying out water cooling.
step 1.2, adopting an infrared thermometer to detect the temperature of HRB400E steel
step 2, performing tensile test, bending test and metallographic analysis on the water-cooled HRB400E steel; the bending test in the step 2 is carried out by adopting a steel bar bending tester, and the tensile test in the step 2 is carried out by adopting a microcomputer control electro-hydraulic servo universal tester
and 3, recording data of a tensile test, a bending test and a metallographic analysis.
taking HRB400E steel materials with phi of 20mm, phi of 25mm, phi of 28mm and phi of 32mm and HRB400E steel materials with 3 specifications, wherein each specification is divided into 2 groups, each group comprises 3 samples, each HRB400E steel material with each specification comprises 6 samples, naturally cooling the HRB400E steel material of the first group, and then carrying out tensile test, bending test and metallographic analysis, and carrying out tensile test and bending test on the HRB400E steel material of the second group by the mechanical property detection method of the HRB400E steel material of the invention to obtain test data as shown in the following table 1:
TABLE 1 mechanical Properties of the samples
The comparison tests show that the mechanical properties of the first group of HRB400E steel and the second group of HRB400E steel are basically consistent, and within an error allowable range, the mechanical property detection method of the HRB400E steel does not affect the performance of the steel, can replace the existing detection method, and can shorten the detection and testing time of the steel by 2-4 hours through experiments.
the invention aims to provide a method for detecting the mechanical property of HRB400E steel, which solves the problem of long detection time of the mechanical property of the steel in the prior art, improves the detection and testing speed, enables the rolled steel to be put in storage in time, reduces the occupancy rate of sites, plants and equipment, and is simple and practical.
Claims (5)
1. A mechanical property detection method of HRB400E steel is characterized by comprising the following steps:
Step 1, naturally cooling the HRB400E steel after rolling until the temperature of the HRB400E steel is not more than 200 ℃, and then cooling by water;
step 2, performing tensile test, bending test and metallographic analysis on the water-cooled HRB400E steel;
And 3, recording data of a tensile test, a bending test and a metallographic analysis.
2. the method for detecting the mechanical property of the HRB400E steel product as claimed in claim 1, wherein the step 1 is specifically carried out according to the following steps:
Step 1.1, placing the HRB400E steel after rolling in a vacant place;
Step 1.2, detecting the temperature of the HRB400E steel until the temperature of the HRB400E steel is not more than 200 ℃, taking out the HRB400E steel and carrying out water cooling.
3. the method for detecting the mechanical property of the HRB400E steel product as claimed in claim 2, wherein the step 1.2 of detecting the temperature of the HRB400E steel product by an infrared thermometer.
4. The method for detecting the mechanical property of the HRB400E steel product as claimed in claim 1, wherein the tensile test in step 2 is performed by a microcomputer controlled electro-hydraulic servo universal tester.
5. The method for detecting the mechanical property of the HRB400E steel product as claimed in claim 1, wherein the bending test in step 2 is performed by using a steel bar bending tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818408.2A CN110579392A (en) | 2019-08-30 | 2019-08-30 | Mechanical property detection method for HRB400E steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818408.2A CN110579392A (en) | 2019-08-30 | 2019-08-30 | Mechanical property detection method for HRB400E steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110579392A true CN110579392A (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910818408.2A Pending CN110579392A (en) | 2019-08-30 | 2019-08-30 | Mechanical property detection method for HRB400E steel |
Country Status (1)
| Country | Link |
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| CN (1) | CN110579392A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213187A (en) * | 2020-09-01 | 2021-01-12 | 首钢水城钢铁（集团）有限责任公司 | Method for rapidly testing mechanical property of twisted steel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200947072Y (en) * | 2006-05-26 | 2007-09-12 | 陈波 | Cooling device for unmanned analysis laboratory |
| CN106048178A (en) * | 2016-07-16 | 2016-10-26 | 柳州科尔特锻造机械有限公司 | Hot rolling process of steel |
-
2019
- 2019-08-30 CN CN201910818408.2A patent/CN110579392A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200947072Y (en) * | 2006-05-26 | 2007-09-12 | 陈波 | Cooling device for unmanned analysis laboratory |
| CN106048178A (en) * | 2016-07-16 | 2016-10-26 | 柳州科尔特锻造机械有限公司 | Hot rolling process of steel |
Non-Patent Citations (2)
| Title |
|---|
| 彭雄 等: "钒氮合金化热轧抗震钢筋HRB400E产品开发", 《中国冶金》 * |
| 杨凯: "自然冷却与200℃水冷HRB400E力学性能关系探讨", 《物理测试》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213187A (en) * | 2020-09-01 | 2021-01-12 | 首钢水城钢铁（集团）有限责任公司 | Method for rapidly testing mechanical property of twisted steel |
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Application publication date: 20191217 |
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| RJ01 | Rejection of invention patent application after publication |