CN102033002A - Method for detecting surface residual oil quantity of rolled cold-rolling steel sheet - Google Patents
Method for detecting surface residual oil quantity of rolled cold-rolling steel sheet Download PDFInfo
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- CN102033002A CN102033002A CN2009101877950A CN200910187795A CN102033002A CN 102033002 A CN102033002 A CN 102033002A CN 2009101877950 A CN2009101877950 A CN 2009101877950A CN 200910187795 A CN200910187795 A CN 200910187795A CN 102033002 A CN102033002 A CN 102033002A
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Abstract
The invention discloses a method for detecting the surface residual oil quantity of a rolled cold-rolling steel sheet, comprising the following steps of: a, cleaning the surface of a steel sheet in an effective detection area by a piece of degreased gauze dipped with petroleum ether; b, covering the cleaned degreased gauze by a piece of degreased quantitative filter paper, and arranging the filter paper in an extract tube (2) of a Soxhlet extractor; c, adding petroleum ether to an extract bottle (5) of the Soxhlet extractor, heating the extract bottle (5) till the residual oil in the degreased gauze is completely extracted; and d, calculating the surface residual oil quantity of the steel sheet. In the invention, the surface residual oil of the cold-rolling steel sheet is extracted in maximum and exactly determined by utilizing a way of heating a solvent and extracting, which truly reflects the quantity of the surface residual oil of the cold-rolling steel sheet.
Description
Technical field
The present invention relates to a kind of surface of cold-rolled steel plate quality determining method, relate in particular to the detection method of the rolling rear surface of a kind of cold-rolled steel sheet resid amount.
Background technology
Along with car industry, cold-rolled steel sheet users such as household electrical appliances industry improving constantly to the surface of cold-rolled steel plate quality requirements, cold-rolled steel sheet manufacturing enterprise has carried out extensive work to improve the surface of cold-rolled steel plate quality, the carbon residue on surface can directly influence the outward appearance and the usability of cold-rolled steel sheet when cold-rolled steel sheet dispatched from the factory, the too high meeting of surface of cold-rolled steel plate remaining carbon causes painting defect, bring great puzzlement to downstream user, simultaneously the galvanized sheet operation has strict demand to the remaining carbon as the cold rolling raw sheet surface of its raw material, therefore too high remaining carbon can reduce the galvanized sheet combination property, reduces the surface of steel plate remaining carbon and is domestic cold-reduced sheet manufacturing enterprise and demand the work carried out urgently.
The carbon residue on surface was that cold-rolled steel sheet lubricated emulsion residue that cools off in the operation of rolling is annealed and formation through perhydro at surface of steel plate when cold-rolled steel sheet dispatched from the factory, therefore reduce rolling after, the carbon residue on surface when the Residual oil of surface of cold-rolled steel plate just can effectively reduce cold-rolled steel sheet and dispatches from the factory before the annealing, cold rolling enterprise adopt strengthen method that operation of rolling control and annealing front spring electrolytic degreasing clean reduce rolling after, the Residual oil of surface of cold-rolled steel plate before the annealing, and the quality of these control device effects needs strict detection method and does and judge accurately, therefore need the surface of cold-rolled steel plate resid amount after rolling be detected.
The domestic cold-reduced sheet of part manufacturing enterprise adopts the surface of steel plate reflectivity to detect the resid amount of surface of steel plate after rolling, and surface of steel plate reflectivity and surface of steel plate resid amount are not linear relationship completely, can not reflect the clean level of surface of steel plate intuitively; Also there is part Study person to adopt direct gravimetric method to detect the surface of steel plate resid amount, but owing to surface of steel plate residual ROLLING OIL content in the rolling back of cold-reduced sheet is very low, and therefore missing by a mile of direct gravimetric method can not reflect plate surface quality exactly.Adopt the method for solvent washing to measure the surface of steel plate Residual oil in addition, the method exists extracts incomplete defective to Residual oil, finally makes testing result on the low side.
In sum, have only and set up effective Residual oil extracting method and the surface of steel plate Residual oil is thoroughly extracted the purpose that just can reach the rolling back of accurate detection cold-rolled steel sheet surface of steel plate resid amount.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of use apparatus,Soxhlet's, adopts heated solvent extracting extracting process that the surface of steel plate Residual oil is transferred in the extracting extract fully, realizes accurately detecting the rolling rear surface of cold-rolled steel sheet resid amount.
In order to realize the foregoing invention purpose, technical scheme of the present invention is:
Apparatus,Soxhlet's utilizes solvent refluxing and siphon principle by extraction flask, extraction tube, condenser, U trap and connecting pipe, oil substances can both be extracted by pure solvent each time, thereby efficient is higher, extracts more complete.
On the model single face, measure effective mensuration district, dip in sherwood oil (boiling range 30-60 ℃) wiping with gauze and effectively measure the surface of steel plate in district through ungrease treatment, wiped clean, the absorbent gauze that wiping is intact wraps in through in the quantitative filter paper of degreasing, puts into the apparatus,Soxhlet's extraction tube.Add sherwood oil (boiling range 30-60 ℃) in the extraction flask, the heating extraction flask, the sherwood oil gasification enters condenser by the connecting pipe rising, and the liquid that congeals into splashes in the extraction tube, the oily substance in the lixiviate sample.The sherwood oil liquid level reach a certain height in the pipe to be extracted, and the sherwood oil that is dissolved with Residual oil flows into extraction flask through U trap.The sherwood oil that flows in the extraction flask continues to be heated gasification, rising, condensation, splashes in the extraction tube, so moves in circles, till the Residual oil extracting in absorbent gauze fully.
With the sherwood oil that is dissolved with Residual oil pour into prepared (quality is that with the sherwood oil evaporate to dryness, beaker is weighed as b 105 ℃ of constant weights under 50-60 ℃, can accurately test out the Residual oil of surface of steel plate in a) the beaker 105 ℃ of constant weights.
Computing formula is:
Model single face Residual oil G
In the formula:
G: model single face resid amount, g/m
2
A: cup is heavy before measuring, g
B: measure back cup, oily heavy, g
S: determined district area, m
2
The present invention adopts the mode of heated solvent extracting extraction to greatest extent the surface of cold-rolled steel plate Residual oil to be extracted and accurately measure, and the surface of cold-rolled steel plate Residual oil what reflect truly.
Description of drawings
Fig. 1 is the apparatus,Soxhlet's synoptic diagram;
Wherein, 1-condenser, 2-extraction tube, 3-U trap, 4-connecting pipe, 5-extraction flask.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is further specified:
On the model single face, measure effective mensuration district of 500mm * 500mm with tape measure, dip in sherwood oil (boiling range 30-60 ℃) wiping with gauze and effectively measure the surface of steel plate in district through ungrease treatment, wiped clean, the absorbent gauze that wiping is intact wraps in the process quantitative filter paper of degreasing of 100mm * 100mm, puts into the extraction tube 2 of apparatus,Soxhlet's shown in Figure 1.Add 100mL sherwood oil (boiling range 30-60 ℃) in the extraction flask 5, heating extraction flask 5, the sherwood oil gasification enters condenser 1 by connecting pipe 4 risings, and the liquid that congeals into splashes in the extraction tube 2, the oily substance in the lixiviate sample.The sherwood oil liquid level reach a certain height in the pipe 2 to be extracted, and the sherwood oil that is dissolved with Residual oil flows into extraction flask 5 through U trap 3.The sherwood oil that flows in the extraction flask 5 continues to be heated gasification, rising, condensation, splashes in the extraction tube 2, so moves in circles, till extracting fully.
The petroleum ether solvent that is dissolved with Residual oil poured in advance into (quality is in a) the 100mL beaker 105 ℃ of constant weights, under 50 ℃-60 ℃ with the sherwood oil evaporate to dryness, beaker is weighed as b 105 ℃ of constant weights, calculates the Residual oil that can accurately test out surface of steel plate according to formula 1.
Model single face Residual oil G
Formula 1
In the formula: G: model single face resid amount, g/m
2
A: cup is heavy before measuring, g
B: measure back cup, oily heavy, g
S: determined district area, m
2
Adopt the present invention to detect surface of steel plate resid amount testing result and with to have the detection method contrast now as shown in the table:
Testing result of the present invention and existing method contrast table
Claims (3)
1. the detection method of the rolling rear surface of a cold-rolled steel sheet resid amount is characterized in that: adopt following steps:
A dips in the surface of steel plate that the district is effectively measured in the sherwood oil wiping with the gauze through ungrease treatment;
The b absorbent gauze that wiping is intact wraps in through in the quantitative filter paper of degreasing, puts into the extraction tube (2) of apparatus,Soxhlet's;
Add sherwood oil in the extraction flask of c apparatus,Soxhlet's (5), heating extraction flask (5) is till the Residual oil extracting in absorbent gauze fully;
D calculates the surface of steel plate resid amount.
2. the detection method of resid amount according to claim 1 is characterized in that: calculate the surface of steel plate resid amount according to following formula,
3. the detection method of resid amount according to claim 1, it is characterized in that: described sherwood oil boiling range is 30-60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910187795 CN102033002B (en) | 2009-09-30 | 2009-09-30 | Method for detecting surface residual oil quantity of rolled cold-rolling steel sheet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910187795 CN102033002B (en) | 2009-09-30 | 2009-09-30 | Method for detecting surface residual oil quantity of rolled cold-rolling steel sheet |
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| CN102033002A true CN102033002A (en) | 2011-04-27 |
| CN102033002B CN102033002B (en) | 2013-01-09 |
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| CN 200910187795 Active CN102033002B (en) | 2009-09-30 | 2009-09-30 | Method for detecting surface residual oil quantity of rolled cold-rolling steel sheet |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998423A (en) * | 2012-11-26 | 2013-03-27 | 苏州市新的电工有限公司 | Oil mass testing method of liquid lubricating oil for coating surface of enamelled wire |
| CN104330538B (en) * | 2014-12-02 | 2016-05-11 | 珠海格力电器股份有限公司 | High-efficiency pipe outer surface oil content detection method |
| CN108760669A (en) * | 2018-03-28 | 2018-11-06 | 无锡隆达金属材料有限公司 | A kind of copper pipe inner surface carbon residue quantity measuring method |
| CN109030397A (en) * | 2018-08-10 | 2018-12-18 | 山东万事达建筑钢品股份有限公司 | A kind of method of inspection of chill volume plate face residua content |
| CN111175171A (en) * | 2020-01-19 | 2020-05-19 | 贵州中烟工业有限责任公司 | Method for detecting surface oil quantity of cigarette blasting bead |
| CN112326493A (en) * | 2020-11-14 | 2021-02-05 | 安徽楚江科技新材料股份有限公司 | Detection apparatus for copper strips surface residual oil volume |
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| CN1463807A (en) * | 2002-06-05 | 2003-12-31 | 北新建材(集团)有限公司 | Process for the manufacture of cold rolling accurate super narrow steel strip and apparatus thereof |
| CN2906619Y (en) * | 2006-06-13 | 2007-05-30 | 中国神马集团有限责任公司 | Gas permeable pressure-relief ring oil content tester |
| CN101352712A (en) * | 2008-08-14 | 2009-01-28 | 安东石油技术（集团）有限公司 | Automatic cleaner for greasy dirt on surface of petroleum drilling tool joint inner screw thread |
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| CN1463807A (en) * | 2002-06-05 | 2003-12-31 | 北新建材(集团)有限公司 | Process for the manufacture of cold rolling accurate super narrow steel strip and apparatus thereof |
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| CN101352712A (en) * | 2008-08-14 | 2009-01-28 | 安东石油技术（集团）有限公司 | Automatic cleaner for greasy dirt on surface of petroleum drilling tool joint inner screw thread |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998423A (en) * | 2012-11-26 | 2013-03-27 | 苏州市新的电工有限公司 | Oil mass testing method of liquid lubricating oil for coating surface of enamelled wire |
| CN102998423B (en) * | 2012-11-26 | 2014-08-06 | 苏州市新的电工有限公司 | Oil mass testing method of liquid lubricating oil for coating surface of enamelled wire |
| CN104330538B (en) * | 2014-12-02 | 2016-05-11 | 珠海格力电器股份有限公司 | High-efficiency pipe outer surface oil content detection method |
| CN108760669A (en) * | 2018-03-28 | 2018-11-06 | 无锡隆达金属材料有限公司 | A kind of copper pipe inner surface carbon residue quantity measuring method |
| CN109030397A (en) * | 2018-08-10 | 2018-12-18 | 山东万事达建筑钢品股份有限公司 | A kind of method of inspection of chill volume plate face residua content |
| CN111175171A (en) * | 2020-01-19 | 2020-05-19 | 贵州中烟工业有限责任公司 | Method for detecting surface oil quantity of cigarette blasting bead |
| CN112326493A (en) * | 2020-11-14 | 2021-02-05 | 安徽楚江科技新材料股份有限公司 | Detection apparatus for copper strips surface residual oil volume |
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|---|---|
| CN102033002B (en) | 2013-01-09 |
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