CN103644856B - A kind of measure the method for ovalizing deflection under the large-scale ring parts condition of high temperature - Google Patents
A kind of measure the method for ovalizing deflection under the large-scale ring parts condition of high temperature Download PDFInfo
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- CN103644856B CN103644856B CN201310524681.7A CN201310524681A CN103644856B CN 103644856 B CN103644856 B CN 103644856B CN 201310524681 A CN201310524681 A CN 201310524681A CN 103644856 B CN103644856 B CN 103644856B
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Abstract
A kind of measure the method for ovalizing deflection under the large-scale ring parts condition of high temperature, relate to technical field of metal material heat treatment, described method is by measuring diameter (5) upper selection of ring-shaped work pieces (4), and it is respectively provided with test block A(1 at the two ends measuring diameter (5)) and test block B(2), utilize laser ranging system by light beam through test block A(1) through hole at middle part gets to test block B(2) and top edge and test block A(1 on one side) edge, record under cold conditions respectively and measurement distance under the condition of high temperature be to obtain deflection；The present invention is simple to operate, measurement error is less, and the most also can complete the measurement to large-scale ring parts ovalizing deflection.
Description
[technical field]
The invention belongs to technical field of metal material heat treatment, especially relate to a kind of measure the method for ovalizing deflection under the large-scale ring parts condition of high temperature.
[background technology]
Known, wheel belt, the large-scale ring parts such as rolling ring is the vital part on kiln large-scale mill series products, this ring parts external diameter is bigger, wall thickness is the thickest, generally use car type furnace to heat when heat treatment, easily there is ovalizing deflection in ring parts during heat treatment, once ring parts occurs that deformation will bring the biggest difficulty to the machining in later stage, operator is generally for the product that can process drawing requirement, would have to during making blank, the thickness surplus of blank is amplified, it is larger than deflection, the most not only cause the serious waste of material, the most crucially, the heat treatment ovalizing deflection of part can cause follow-up inside and outside circle each portion processing capacity different, thus affect the uniformity of part outer work surface hardness, the final serviceability affecting product；And once the ovalizing deflection of heat treatment process is more than institute's made allowance, will result in again product and cannot be carried out machining and scrap；nullThe generally ovalizing deflection of part is due to heating、The inhomogeneities of insulation and cooling procedure tissue and temperature causes，These inhomogeneities then join stove position with part、Original structure state、Heating and the uniformity of insulating process in-furnace temperature、The uniformities of cooling procedure cooling medium etc. are multifactor relevant，In order to reduce the ovalizing deflection amount of part，Stage and the reason that just need to ovalizing deflection occur are analyzed，To determine the factor causing cooling strain，And then be controlled by，The generally relatively good operation of dimensional measurement under cold conditions，And the measurement of the ovalizing deflection amount of the hot stage after heating and insulation there be difficulties involved when，Especially when austenitizing temperature is incubated，Its temperature is typically more than 800 DEG C，Measurement ovalizing deflection quantitative change is made to obtain more difficult，And find out and a kind of can measure the method for ovalizing deflection under the large-scale ring parts condition of high temperature and become the basic demand of those skilled in the art.
[summary of the invention]
In order to overcome the deficiency in background technology, the invention discloses and a kind of measure the method for ovalizing deflection under the large-scale ring parts condition of high temperature, described method is by selecting measurement diameter on ring-shaped work pieces, and it is respectively provided with test block A and test block B at the two ends measuring diameter, utilize laser ranging system that light beam is got to through the through hole in the middle part of test block A top edge on one side and the test block A edge of test block B, record under cold conditions respectively and measurement distance under the condition of high temperature is to obtain deflection；The present invention is simple to operate, measurement error is less, and the most also can complete the measurement to large-scale ring parts ovalizing deflection.
In order to realize the purpose of foregoing invention, the present invention adopts the following technical scheme that
A kind of measuring the method for ovalizing deflection under the large-scale ring parts condition of high temperature, described method includes selecting measuring record under distance, the condition of high temperature measured in record under diameter, cold conditions and measures distance and the acquisition of deflection, and concrete operation step is as follows:
1) selection measurement diameter:
Select an a diameter of measurement diameter before heating above ring-shaped work pieces under cold conditions, fix a test block B in the one end measuring diameter, fix a middle part at the other end measuring diameter and be provided with the test block A of through hole；
2) record measurement distance under cold conditions:
Connect previous step, the ring-shaped work pieces shove charge supporting of fixing test block B and test block A will be fixed with, fixed platform is erected around stove, utilize laser ranging system that light beam is got to the top edge on one side of test block B through the through hole in the middle part of test block A on the stationary platform, the hot spot of test block B top edge on one side makes marks, and record measurement distance L1, then level slightly moves laser range finder, light beam is got to test block A edge, the hot spot of test block A edge makes marks, distance L2, computed range difference Δ L=L1-L2 measured in record；
3) record measurement distance under the condition of high temperature:
Connect previous step, fixed platform is heightened at high operating temperatures according to the coefficient of expansion of part, laser ranging system is utilized to pass on the hot spot of one side edge that the through hole in the middle part of test block A gets to test block B top by light beam on the stationary platform, and record measurement distance L1 ', then level slightly moves laser range finder, on the hot spot of the edge that light beam is got to test block A, distance L2 ', computed range difference Δ L '=L1 '-L2 ' measured in record；
4) deflection is obtained:
Connecing previous step, the value of rear A=Δ L '-Δ L is to measure the deflection of diameter before heating.
The described method of ovalizing deflection under the large-scale ring parts condition of high temperature of measuring, square test block equal sized by the most described test block A and test block B, described test block A and test block B is respectively welded at the two ends measuring diameter, and welding manner is spot-welded.
Described measures the method for ovalizing deflection under the large-scale ring parts condition of high temperature, and laser ranging system described in step 2 includes laser range finder and laser range finder base.
Described measures the method for ovalizing deflection under the large-scale ring parts condition of high temperature, and described laser ranging base is angle bar or the frock of channel-section steel processing and fabricating.
Described measures the method for ovalizing deflection under the large-scale ring parts condition of high temperature, and measurement diameter described in step 1 is chosen as at least four, and every diameter is equal with the angle of adjacent diameter.
Described measure the method for ovalizing deflection under the large-scale ring parts condition of high temperature, making marks on hot spot described in step 2 and step 3, described in be labeled as the most adeciduate marker, described marker is lead oil.
Owing to using technique scheme, there is advantages that
The method of ovalizing deflection under the measurement of the present invention large-scale ring parts condition of high temperature, described method is by selecting measurement diameter 5 on ring-shaped work pieces 4, and it is respectively provided with test block A1 and test block B2 at the two ends measuring diameter 5, and utilize laser ranging system that light beam is got to top edge and the edge of test block A1 on one side of test block B2 through the through hole in the middle part of test block A1, record under cold conditions respectively and measurement distance under the condition of high temperature is to obtain deflection；The present invention is simple to operate, measurement error is less, and the most also can complete the measurement to large-scale ring parts ovalizing deflection.
[accompanying drawing explanation]
Fig. 1 is the front view of the present invention；
Fig. 2 is the top view of the present invention；
In the drawings: 1, test block A；2, test block B；3, fixed platform；4, ring-shaped work pieces；5, diameter is measured.
[detailed description of the invention]
With reference to the following examples, the present invention can be explained in greater detail；But, the invention is not limited in these embodiments.
The method of ovalizing deflection under the large-scale ring parts condition of high temperature is measured in conjunction with a kind of described in accompanying drawing 1, described method includes selecting record under measurement diameter, cold conditions to measure record measurement distance and the acquisition of deflection under distance, the condition of high temperature, and concrete operation step is as follows:
1) selection measurement diameter:
Ring-shaped work pieces 4 under cold conditions selects an a diameter of measurement diameter 5 above before heating, a test block B2 is fixed in the one end measuring diameter 5, fix a middle part at the other end measuring diameter 5 and be provided with the test block A1 of through hole, square test block equal sized by described test block A1 and test block B2, described test block A1 and test block B2 is respectively welded at the two ends measuring diameter 5, and welding manner is spot-welded；Described measurement diameter 5 is chosen as at least four, and every diameter is equal with the angle of adjacent diameter；
2) record measurement distance under cold conditions:
Connect previous step, fixing test block B2 and test block A1 there is ring-shaped work pieces shove charge supporting, fixed platform 3 is erected around stove, fixed platform 3 utilize laser ranging system light beam is got to the top edge on one side of test block B2 through the through hole in the middle part of test block A1, the hot spot of test block B2 top edge on one side makes marks, and record measurement distance L1, then level slightly moves laser range finder, light beam is got to test block A1 edge, the hot spot of A1 edge makes marks, distance L2, computed range difference Δ L=L1-L2 measured in record；Described laser ranging system includes laser range finder and laser range finder base；Described laser ranging base is angle bar or the frock of channel-section steel processing and fabricating；Described being labeled as the most adeciduate marker, described marker is lead oil.
3) record measurement distance under the condition of high temperature:
Connect previous step, fixed platform 3 is heightened at high operating temperatures according to the coefficient of expansion of part, fixed platform 3 utilize laser ranging system pass on the hot spot of one side edge that the through hole in the middle part of test block A1 gets to test block B2 top by light beam, and record measurement distance L1 ', then level slightly moves laser range finder, being got to by light beam on the hot spot of A1 edge, distance L2 ', computed range difference Δ L '=L1 '-L2 ' measured in record；
4) deflection is obtained:
Connecing previous step, the value of rear A=Δ L '-Δ L is to measure the deflection of diameter 5 before heating.
Embodiment 1:
Wheel belt material is 30Mn, outside diameter is 7192mm, a height of 1360mm, have selected four diameters before shove charge to measure, wherein one with heating chassis boiler face parallel, four burn-on the most respectively square test block and square test blocks with holes, around car type furnace, erect four platforms, and car type furnace position is fixed, label；The angle bar crossed by finish turning is leveled up, and adjustment direction so that laser detection light beam can be got in another test block through square test block with holes, utilizes lead oil to mark on hot spot；Measuring in the cold state, the Δ L1=7162mm parallel with chassis boiler face, vertical view turns clockwise, Article 2 Δ L2=7165mm, the Δ L3=7165mm vertical with chassis boiler face, Article 4 measured value Δ L4=7163mm；Wheel belt heating-up temperature is 850 DEG C, according to the thermal coefficient of expansion of this material, and the coefficient of expansion of a height of 550mm parallels, four platforms all increases 16mm；After heating driveing car type furnace to home position, then utilize laser ranging instrument to measure, measurement result is Δ L1 '=7227mm, Δ L2 '=7125mm, Δ L3 '=7125mm, Δ L4 '=7216mm；I.e. wheel belt ovalizing deflection at high operating temperatures 10mm；The present invention is simple to operate, measurement error is less, and the most also can complete the measurement to large-scale ring parts ovalizing deflection.
The embodiment selected in this article for the open purpose of the present invention, it is suitable to be presently considered to be, it is to be understood that it is contemplated that include that all belong to all changes of this design and the embodiment in the scope of the invention and improvement.
Claims (6)
1. measuring a method for ovalizing deflection under the large-scale ring parts condition of high temperature, described method includes selecting record under measurement diameter, cold conditions to measure record measurement distance and the acquisition of deflection under distance, the condition of high temperature, it is characterized in that: concrete operation step is as follows:
1) selection measurement diameter:
Ring-shaped work pieces under cold conditions (4) selects an a diameter of measurement diameter (5) above before heating, fixes a test block B(2 in the one end measuring diameter (5)), fix a middle part at the other end measuring diameter (5) and be provided with the test block A(1 of through hole)；
2) record measurement distance under cold conditions:
Connect previous step, test block B(2 will be fixed with) and test block A(1) ring-shaped work pieces (4) shove charge supporting, fixed platform (3) is erected around stove, fixed platform (3) utilizes laser ranging system by light beam through test block A(1) through hole at middle part gets to test block B(2) and top edge on one side, at test block B(2) make marks on the hot spot of top edge on one side, and record measurement distance L1, then level slightly moves laser range finder, light beam is got to test block A(1) edge, at test block A(1) make marks on the hot spot of edge, distance L2 measured in record, computed range difference Δ L=L1-L2；
3) record measurement distance under the condition of high temperature:
Connect previous step, fixed platform (3) is heightened at high operating temperatures according to the coefficient of expansion of part, fixed platform (3) utilizes laser ranging system by light beam through test block A(1) through hole at middle part gets to test block B(2) on the hot spot of one side edge on top, and record measurement distance L1 ', then level slightly moves laser range finder, light beam is got to test block A(1) edge hot spot on, record measure distance L2 ', computed range difference Δ L '=L1 '-L2 '；
4) deflection is obtained:
Connecing previous step, the value of A=Δ L '-Δ L is to measure the deflection before and after diameter (5) heats.
The method of ovalizing deflection under the measurement the most according to claim 1 large-scale ring parts condition of high temperature, it is characterized in that: at test block A(1 described in step 1)) and test block B(2) sized by equal square test block, described test block A(1) and test block B(2) it being respectively welded at the two ends measuring diameter (5), welding manner is spot-welded.
Under the measurement the most according to claim 1 large-scale ring parts condition of high temperature, the method for ovalizing deflection, is characterized in that: in step 2) described in laser ranging system include laser range finder and laser range finder base.
The method of ovalizing deflection under the measurement the most according to claim 3 large-scale ring parts condition of high temperature, is characterized in that: described laser range finder base is angle bar or the frock of channel-section steel processing and fabricating.
The method of ovalizing deflection under the measurement the most according to claim 1 large-scale ring parts condition of high temperature, is characterized in that: the measurement diameter (5) described in step 1) is chosen as at least four, and every diameter is equal with the angle of adjacent diameter.
Under the measurement the most according to claim 1 large-scale ring parts condition of high temperature, the method for ovalizing deflection, is characterized in that: in step 2) described in make marks on hot spot, described in be labeled as the most adeciduate marker, described marker is lead oil.
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| CN103644856B true CN103644856B (en) | 2016-08-17 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201488673U (en) * | 2009-07-31 | 2010-05-26 | 西南铝业（集团）有限责任公司 | Aluminum alloy ring measuring instrument |
| CN101838730A (en) * | 2010-03-23 | 2010-09-22 | 中信重工机械股份有限公司 | Reversible deformation correcting method for elliptical gear ring subjected to deformation after carburization |
| CN102353338A (en) * | 2011-07-04 | 2012-02-15 | 范秀芳 | Shaft and hole center-distance digital-display laser caliper |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3330209B2 (en) * | 1993-11-11 | 2002-09-30 | 三菱樹脂株式会社 | Measurement method for torsion of oval plastic tube |
| US7864342B2 (en) * | 2008-10-08 | 2011-01-04 | The Richard M. Weiss Revocable Trust | Apparatus and method for measuring displacement of a curved surface using dual laser beams |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201488673U (en) * | 2009-07-31 | 2010-05-26 | 西南铝业（集团）有限责任公司 | Aluminum alloy ring measuring instrument |
| CN101838730A (en) * | 2010-03-23 | 2010-09-22 | 中信重工机械股份有限公司 | Reversible deformation correcting method for elliptical gear ring subjected to deformation after carburization |
| CN102353338A (en) * | 2011-07-04 | 2012-02-15 | 范秀芳 | Shaft and hole center-distance digital-display laser caliper |
Non-Patent Citations (1)
| Title |
|---|
| 大直径工件的测量方法;孙佳 等;《机械与电子》;20061231(第3期);13-15 * |
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Effective date of registration: 20190726 Address after: 471000 Jianxi District Construction Road 206, Luoyang City, Henan Province Co-patentee after: Luoyang Recasting Forging Co., Ltd. Patentee after: Citic Heavy Industries Co., Ltd. Address before: 471039 Jianshe Road, Jianxi, Henan, No. 206, Patentee before: Citic Heavy Industries Co., Ltd. |