CN107421827A - A kind of method of quick measurement steel plate quenching uniformity - Google Patents
A kind of method of quick measurement steel plate quenching uniformity Download PDFInfo
- Publication number
- CN107421827A CN107421827A CN201710635254.4A CN201710635254A CN107421827A CN 107421827 A CN107421827 A CN 107421827A CN 201710635254 A CN201710635254 A CN 201710635254A CN 107421827 A CN107421827 A CN 107421827A
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- Prior art keywords
- hardness
- steel plate
- zonule
- uniformity
- polishing
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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
-
- 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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- 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
- G01N1/32—Polishing; Etching
-
- 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
-
- 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
A kind of method of quick measurement steel plate quenching uniformity, processing step include abrasive machine sanding and polishing surface zonule → portable hardometer and play polishing zonule hardness → zonule hardness values choice → steel plate uniformity of hardness assessment.Inventive principle：There is relevance in the case hardness and intensity of steel plate and the uniformity of quenching, the low place quenching water hardness of hardness is few, and then water is sufficient in high place.Compared with conventional method, the present invention has advantages below：Do not destroy steel plate；Efficiency high；Accuracy is high；Method is simple, workable.
Description
Technical field
The invention belongs to material heat treatment technical field, particularly a kind of method for measuring quenched nickelclad performance uniformity.
Background technology
It is quenched to be used as a kind of Technology for Heating Processing to be widely used in the steel plate manufacturing field such as high-strength steel, steel mill's tempering product line one
As all use quenching press, there is special roller-way, water rationing cooling etc. to ensure that mechanical property of steel plate is uniform, and with good
Plate shape.
The performance uniformity of hardened and tempered steel plate is examined at present mainly by sampling detection mechanical property in diverse location to confirm
Whether steel plate whole plate performance is uniform.But the shortcomings that this method, is：Will be by links such as sampling, sample preparation, detections, not only efficiency
It is low, and to destroy steel plate.Time-consuming for this conventional method simultaneously, so as to detect result rapidly to instruct live life
Production.
The content of the invention
The present invention is intended to provide a kind of quick measurement steel plate quenching uniformity for overcoming above-mentioned prior art weak point
Method, confirms whether quenching and tempering device meets production requirement.
Technical scheme：
A kind of method of quick measurement steel plate quenching uniformity, processing step include：
（1）Abrasive machine sanding and polishing surface zonule：Extract one block of steel plate for having carried out quenching heat treatment, steel plate head, in, tail
Nine zonules are chosen in the left, center, right in portion, carry out grinding and buffing using abrasive machine, grind off scale on surface, flour milling is smooth
Smooth, polishing area is not less than 100mmX100mm, 0.3 ~ 0.5mm of grinding depth, polishing area flat smooth；
（2）Portable hardometer beats hardness to polishing zonule：It is required that calibrating hardometer with reference block before beating hardness, hardness is beaten
When hardometer perpendicular to the contact surface of steel plate, Push button, reading numerical values after stopping 2 seconds, 9 points are made a call in each zonule；
（3）Zonule hardness values are accepted or rejected：Get each zonule nine hardness numbers of test ready, remove three minimum values and one
Individual maximum, left point are averaged；
（4）Steel plate uniformity of hardness is assessed：The hardness number of each zonule of Integrated comparative, whether uniform assess whole plate hardness.
Inventive principle：Relevance be present in the case hardness and intensity of steel plate and the uniformity of quenching：The low place of hardness
It is few to quench water；Then water is sufficient in hardness high place.
Compared with conventional method, the present invention has advantages below：Do not destroy steel plate；Efficiency high；Accuracy is high；Method letter
It is single, workable.
Embodiment
Present disclosure is further illustrated with reference to embodiment.
Embodiment one：One steel plate of normal heating rolling, trade mark NM360, plate number 6606111300, quenched machine are quenched
Fire, surface of steel plate temperature drop to normal temperature.The method of quick measurement steel plate quenching uniformity, processing step include：
（1）Abrasive machine sanding and polishing surface zonule：Steel plate will have been quenched it is hung to stack position and be laid flat, the selected steel plate that needs to test is small
Region（Steel plate head, in, the left, center, right of tail choose 9 zonules altogether）, grinding and buffing is carried out using abrasive machine.It is required that grind off
Scale on surface, flour milling flat smooth, polishing area are not less than 100mmX100mm, 0.3 ~ 0.5mm of grinding depth, polishing area
Domain flat smooth；
（2）Portable hardometer beats hardness to polishing zonule：Hardometer is calibrated with reference block, hardometer is vertical when beating hardness
In the contact surface of steel plate, Push button, reading numerical values after stopping 2 seconds, 9 points are made a call in each zonule.
Test result such as table 1.
Table 1
（3）Zonule hardness values are accepted or rejected：Get each zonule nine hardness numbers of test ready, remove three minimum values and
One maximum, left point are averaged.It is shown in Table 2.
Table 2
（4）Steel plate uniformity of hardness is assessed：Each zone hardness value is contrasted, whole plate uniformity of hardness is assessed, is tied from above
Fruit sees, the steel plate whole plate hardness illustrates that quenching uniformity is preferable than more uniform.
Embodiment two：One steel plate of normal heating rolling, trade mark Q690D, plate number 6614057100, quenched machine are quenched
Fire, surface of steel plate temperature drop to normal temperature.The method of quick measurement steel plate quenching uniformity, processing step include：
（1）Abrasive machine sanding and polishing surface zonule：Steel plate will have been quenched it is hung to stack position and be laid flat, the selected steel plate that needs to test is small
Region（Steel plate head, in, the left, center, right of tail choose 18 zonules altogether）, grinding and buffing is carried out using abrasive machine.It is required that mill
Fall scale on surface, flour milling flat smooth, polishing area is not less than 100mmX100mm, 0.3 ~ 0.5mm of grinding depth, polished
Region flat smooth；
（2）Portable hardometer beats hardness to polishing zonule：Hardometer is calibrated with reference block, hardometer is vertical when beating hardness
In the contact surface of steel plate, Push button, reading numerical values after stopping 2 seconds, 9 points are made a call in each zonule.Test result such as table 3.
Table 3
（3）Zonule hardness values are accepted or rejected：Get each zonule nine hardness numbers of test ready, remove three minimum values and one
Individual maximum, left point are averaged.It is shown in Table 4.
Table 4
（4）Steel plate uniformity of hardness is assessed：Each zone hardness value is contrasted, whole plate uniformity of hardness is assessed, is tied from above
Fruit sees that the steel plate whole plate hardness is uneven, and part of being kept right among afterbody has more low value, shows from steel plate quenching water not
Uniformly.
Claims (1)
- A kind of 1. method of quick measurement steel plate quenching uniformity, it is characterised in that processing step includes：（1）Abrasive machine sanding and polishing surface zonule：Extract one block of steel plate for having carried out quenching heat treatment, steel plate head, in, tail Nine zonules are chosen in the left, center, right in portion, carry out grinding and buffing using abrasive machine, grind off scale on surface, flour milling is smooth Smooth, polishing area is not less than 100mmX100mm, 0.3 ~ 0.5mm of grinding depth, polishing area flat smooth；（2）Portable hardometer beats hardness to polishing zonule：Beat before hardness and calibrate hardometer with reference block, beat hard during hardness Degree meter is perpendicular to the contact surface of steel plate, and Push button, reading numerical values after stopping 2 seconds, 9 points are made a call in each zonule；（3）Zonule hardness values are accepted or rejected：Get each zonule nine hardness numbers of test ready, remove three minimum values and one Individual maximum, left point are averaged；（4）Steel plate uniformity of hardness is assessed：The hardness number of each zonule of Integrated comparative, whether uniform assess whole plate hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710635254.4A CN107421827A (en) | 2017-07-30 | 2017-07-30 | A kind of method of quick measurement steel plate quenching uniformity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710635254.4A CN107421827A (en) | 2017-07-30 | 2017-07-30 | A kind of method of quick measurement steel plate quenching uniformity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107421827A true CN107421827A (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710635254.4A Pending CN107421827A (en) | 2017-07-30 | 2017-07-30 | A kind of method of quick measurement steel plate quenching uniformity |
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| Country | Link |
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| CN (1) | CN107421827A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646306A (en) * | 2019-11-06 | 2020-01-03 | 湖南华菱湘潭钢铁有限公司 | Method for evaluating segregation of continuous casting billet through hardness |
| CN111024533A (en) * | 2019-12-06 | 2020-04-17 | 阳江十八子刀剪制品有限公司 | Method for detecting steel materials cut by cutter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388077A (en) * | 2015-10-26 | 2016-03-09 | 南京钢铁股份有限公司 | Rapid die steel hardness detection method |
| CN105486725A (en) * | 2016-01-07 | 2016-04-13 | 广西南南铝加工有限公司 | Detection system for conductivity values of pre-stretched aluminum alloy plates and using method thereof |
-
2017
- 2017-07-30 CN CN201710635254.4A patent/CN107421827A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388077A (en) * | 2015-10-26 | 2016-03-09 | 南京钢铁股份有限公司 | Rapid die steel hardness detection method |
| CN105486725A (en) * | 2016-01-07 | 2016-04-13 | 广西南南铝加工有限公司 | Detection system for conductivity values of pre-stretched aluminum alloy plates and using method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 栗丽 等: "汽车B柱加强板的热冲压成形工艺及性能研究", 《汽车工艺与材料AT&M》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646306A (en) * | 2019-11-06 | 2020-01-03 | 湖南华菱湘潭钢铁有限公司 | Method for evaluating segregation of continuous casting billet through hardness |
| CN111024533A (en) * | 2019-12-06 | 2020-04-17 | 阳江十八子刀剪制品有限公司 | Method for detecting steel materials cut by cutter |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171201 |