CN101261211B - Soldering material wetting angle measurement method - Google Patents
Soldering material wetting angle measurement method Download PDFInfo
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- CN101261211B CN101261211B CN2007101644059A CN200710164405A CN101261211B CN 101261211 B CN101261211 B CN 101261211B CN 2007101644059 A CN2007101644059 A CN 2007101644059A CN 200710164405 A CN200710164405 A CN 200710164405A CN 101261211 B CN101261211 B CN 101261211B
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Abstract
The invention relates to a measuring method of a wetting angle of solder alloy, belonging to the technical field of solder alloy technical performance testing, which comprises the following steps: a.image capture: a digital camera is used for capturing an image vertical to the sample section; b. image cutting: Windows software is adopted to cut the image; c. image conversion: Windows and AutoCADsoftware are adopted to copy the cut image to the graphic window of the AutoCAD software; d. curve drawing: a separatrix between the solder alloy and a base on the sample and a elliptical curve matched with the contour of the solder alloy on the sample section; e. tangent drawing and angle measuring: the two intersection points of the separatrix and the elliptical curve matched with the contour ofthe solder alloy on the sample section are marked, the tangent with the two intersection points being tangent points is drawn, and the angle is marked between the tangent of the two intersection points and the separatrix and is the wetting angle of the solder alloy. The measuring method of a wetting angle of solder alloy can meet requirements for testing the wetting angle of solder alloy and soldering flux.
Description
Technical field
The present invention relates to a kind of measuring method of soldering material wetting angle, belong to the detection technique field of solder technical feature.
Background technology
Wetting angle is in the every performance of solder and scaling powder, and the correct measurement of wetting angle also can provide parameter accurately for the calculating of metal material interfacial tension.General at present instrumentation (GBX-Contact Angle Meter) the measurement wetting angle that adopts, or calculate wetting angle by measuring wetting power, because instrumentation costs an arm and a leg, need the professional and technical personnel to detect, and calculate wetting angle by measuring wetting power, and not only need instrumentation, calculate also very complicated, its result of calculation is only for reference, has therefore restricted the detectability of medium and small solder and scaling powder manufacturing enterprise.
Summary of the invention
The purpose of this invention is to provide a kind of employing digital photography computer software technology and combine, can satisfy the measuring method that solder and scaling powder wetting angle detect the soldering material wetting angle that requires.
The present invention is a kind of measuring method of soldering material wetting angle, it is characterized in that carrying out according to the following steps:
A, image capture: solder test specimen that will be to be taken the photograph cuts off four limits, cuts into section and polishing open along solder test specimen metal welding dot center then, gets perpendicular to test specimen section pickup image with digital camera;
B, image cutting: adopt Windows software,, image is carried out cutting with behind the image input computer that is absorbed and be inserted into Word document;
C, image transitions: adopt Windows and AutoCAD software, will copy in the AutoCAD software graphical window through the image of Windows software cutting;
D, curve plotting: utilize AutoCAD software drawing function, mark scolder on the test specimen and the separatrix between the matrix exactly, and with the test specimen section on the elliptic curve that coincide of scolder profile;
E, draw tangent line and measure angle: mark two intersection points of scolder profile elliptic curve on separatrix and the test specimen section, draw this two tangent lines that intersection point is the point of contact, mark the tangent line and the separatrix angle of two intersection points, be the wetting angle of solder.
The pixel of the digital camera in the described image capture step can be not less than 1600 * 1200, has manual focusing and microshot function.
The Windows software that adopts in described image cutting and the image transitions step can be Windows98 or highest version more.
The AutoCAD software that adopts in described image transitions and the curve plotting step can be the AutoCAD2000 or the software of highest version more.
The present invention adopts digital photography, Windows and three kinds of technology of AutoCAD to combine, make full use of the high characteristics of image definition of numeral taking photo technology picked-up, cooperate Windows software cutting image and image transitions, and the powerful drawing function of AutoCAD software, the wetting angle of testing solder and scaling powder.In the operating process, promptly use Windows software image is amplified ten surplus times, still can keep higher sharpness, by Word document to the cutting of bat image, can obtain desirable picture, AutoCAD software is amplified images cut under nearly a hundred times the situation, and still the thin portion structure of display image is very clearly told scolder profile on the test specimen.Wetting angle measuring accuracy of the present invention can reach ± and 0.01 °, so the present invention can substitute prior art, can satisfy the requirement of solder and scaling powder wetting angle test fully.The present invention adopts and popularizes three kinds of wider technology, and easily-learned easily mastered need not instrumentation or equipment, and operating personnel train a little and can grasp basic main points.
Description of drawings
Fig. 1 is the cross-section image of solder test specimen of the present invention;
Fig. 2 is the test specimen section detail image after cutting is handled of the present invention;
Fig. 3 is a graph line of being painted according to Fig. 2 image of the present invention;
Fig. 4 is of the present invention according to Fig. 3 graph line tangent line of drawing and the wetting angle that records.
Embodiment
Below in conjunction with embodiment the present invention is further described:
1, image capture
Solder test specimen to be taken the photograph is cut off four limits, only stay the area of 20mm * 20mm, cut into section and polishing open along solder test specimen metal welding dot center then, with pixel 2016 * 1512, manual focusing scope be 55-200mm, digital camera with close-shot function, get perpendicular to test specimen section center position pickup image, institute's image of taking the photograph as shown in Figure 1.Should note during shooting adjusting focal position on the test specimen cross section place.
2, image cutting
In order to show the image of test specimen section especially, need that image is done necessary cutting and handle, otherwise bring inconvenience can for the application and the operation of AutoCAD software.Present embodiment adopts Windows2000 version software, behind captured image input computer, be inserted into Word document, this moment, screen can eject " picture toolbar " automatically, if do not eject this hurdle automatically, then left button is clicked (unreceipted a left side, back, the right button person is left button) choose the image that is replicated in the document, click right then, from drop-down menu, click " toolbar that Shows Picture (2) ", click crop icon in the toolbar that ejects, can do necessary cutting image, to obtain the most rational image, suitable enlarged image after the cutting is so that observe and highlight its thin portion structure, as shown in Figure 2.
3, image transitions
With the image after the Windows2000 software processes, be converted to the figure of available AutoCAD software processes, present embodiment adopts AutoCAD2004 software.The image of cutting is chosen in click, click right, click " duplicating " in the drop-down menu again, close Word document, double-click AutoCAD2004 icon on the desktop, open software, then image is pasted in the graphical window, and click the position, insertion point, this moment, screen can eject " OLE characteristic " dialog box automatically, can image size and the scaling of pasting be provided with in dialog box, present embodiment is directly clicked " determining ", image can show in graphical window, and image is made suitable convergent-divergent and mobile, makes it be in suitable position.
4, curve plotting
Correlation theory shows, one dropping liquid attitude metal is on horizontal sheet, the meeting nature forms the drop of elliptical shape, form the curve that is similar to elliptical shape too as the brazing metal center section on the solder test specimen, therefore can utilize the powerful drawing function of AutoCAD, draw out with the test specimen section on the ellipse that coincide substantially of scolder profile.
4.1 click and to choose image, click right moves to " drawing order (W) " in the drop-down menu with mouse, clicks in the submenu of choosing ejection " postposition " or " can not select ", this sampled images can be not selected and the influence operation in drawing course;
4.2 close the quadrature function, open the picture capture function, by the window zoom function, mark the separatrix AB between the scolder and matrix on the test specimen exactly.A, the B two-end-point is the joining of brazing metal outline line two ends lowest part and substrate on the test specimen section, and be datum line with AB, mark perpendicular bisector L temporarily as one of oval center line, correct position reconnaissance on this center line, the AB line is copied to this point as second center line (being designated as CD), and prolongation C, D two-end-point length, on the CD line, choose suitable length as long axis of ellipse, the initial numerical value of present embodiment long axis length is 5100, click the oval icon in drawing instrument hurdle, access the order of drawing oval function, click the transverse two-end-point, input " R " (rotation) in command bar, and enter key is determined, in order line, import rotation angle value again, the initial numerical value of present embodiment is 50, and carriage return is determined, then according to the scolder profile degree of agreement on paint ellipse and the test specimen section, pass through convergent-divergent, move and function such as rotation, and transverse length numerical value and rotation angle value are revised in cooperation, painting graph line is adjusted, make oval as far as possible with the test specimen section on the scolder profile phase coincide, as shown in Figure 3.
5, draw tangent line and measure angle
Draw with the test specimen section on the elliptic curve that coincide of scolder profile phase after, the click image is chosen, and deleted image, only keep the graph line of painting, aim at " Object Snap " icon with mouse, click right is clicked from the dialog box that ejects " setting ", from the dialog box that ejects, click again and choose " intersection point " and " point of contact " check box, and close other check box function.Open the quadrature function, the scolder over top is selected correct position on test specimen, draw a cross coordinate as the tangent line starting point, it highly is not higher than the diameters that scolder is sprawled on the test specimen, the diameters that scolder is sprawled on the present embodiment test specimen is the distance of 2 of A, B, its value is 3944, and it is 1130 that present embodiment cross coordinate height is appointed the peek value.Draw the straight line icon with the click toolbar, mouse is shifted near cross coordinate center, software can be chosen this central point automatically, after clicking cross coordinate center, mouse is shifted near the elliptic curve of A point, software can find the position, point of contact on the elliptic curve automatically and show the point of contact icon, and this position, point of contact is relevant with the position of cross coordinate, clicks this position, point of contact, by the window convergent-divergent, observe the offset distance that this point of contact and A are ordered, if tangent line is then deleted in A point left side in the point of contact, with the cross coordinate to the right translation suitable distance, otherwise then cross coordinate translation suitable distance to the left repeats above-mentioned method of operating of painting tangent line, and the point of contact is overlapped with the A point.Also can by observing point of contact icon and A point distance and the position that software marks automatically, determine direction and distance that the cross coordinate moves when drawing tangent line, this tangent line and the formed angle of separatrix AB are the wetting angle of test specimen solder or scaling powder.The icon of click tools hurdle angular dimension function is clicked tangent line and AB line again, and it is 36.48 ° that software promptly marks angle numerical value, both A point wetting angle numerical value was 36.48 °, repeat the aforesaid operations method, can obtain the wetting angle numerical value that B orders is 37.71 °, as shown in Figure 4.
Comparative Examples: above-mentioned test specimen adopts GBX-Contct Angle Meter instrument to survey the wetting angle value, and the A point is 36 ± 0.5 °, and the B point is 37.5 ± 0.5 °, compares with embodiment, within its deviation range.
The present invention is not limited to the foregoing description, when practical application, can select equipment and software in the foregoing descriptions according to different present situations, or equipment except that the foregoing description and software, but does not all limit the scope of the invention in any form.If adopt equipment and software version in non-the foregoing description, possible concrete operations step can change to some extent.
Claims (3)
1. the measuring method of a soldering material wetting angle is characterized in that carrying out according to the following steps:
A, image capture: solder test specimen that will be to be taken the photograph cuts off four limits, cut into section and polishing open along solder test specimen metal welding dot center then, get perpendicular to test specimen section pickup image with digital camera, the pixel of digital camera is not less than 1600 * 1200, has manual focusing and microshot function;
B, image cutting: adopt Windows software,, image is carried out cutting with behind the image input computer that is absorbed and be inserted into Word document;
C, image transitions: adopt Windows and AutoCAD software, will copy in the AutoCAD software graphical window through the image of word software cutting;
D, curve plotting: utilize AutoCAD software drawing function, mark scolder on the test specimen and the separatrix between the matrix exactly, and with the test specimen section on the elliptic curve that coincide of scolder profile;
E, draw tangent line and measure angle: mark two intersection points of scolder profile elliptic curve on separatrix and the test specimen section, draw this two tangent lines that intersection point is the point of contact, mark the tangent line and the separatrix angle of two intersection points, be the wetting angle of solder.
2. by the measuring method of the described a kind of soldering material wetting angle of claim 1, it is characterized in that the Windows software that adopts in described image cutting and the image transitions step is Windows98 or highest version more.
3. by the measuring method of the described a kind of soldering material wetting angle of claim 1, it is characterized in that the AutoCAD software that adopts in described image transitions and the curve plotting step is the AutoCAD2000 or the software of highest version more.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101644059A CN101261211B (en) | 2007-12-07 | 2007-12-07 | Soldering material wetting angle measurement method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101644059A CN101261211B (en) | 2007-12-07 | 2007-12-07 | Soldering material wetting angle measurement method |
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| CN101261211A CN101261211A (en) | 2008-09-10 |
| CN101261211B true CN101261211B (en) | 2010-06-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103128454B (en) * | 2013-02-01 | 2015-07-29 | 河南科技大学 | Improve the method for solder wetting, device and test experience method and apparatus thereof |
| CN103322935B (en) * | 2013-06-09 | 2016-05-18 | 复旦大学附属金山医院 | A kind of spectacle frame is worn distortion displacement analyzer and assay method thereof |
| CN104128689A (en) * | 2014-08-14 | 2014-11-05 | 湖北三江航天红林探控有限公司 | Fuse control module and soldering method thereof |
| CN105699256A (en) * | 2014-11-28 | 2016-06-22 | 中国科学院金属研究所 | A method of calculating a wetting speed for Sn-based solder and a Cu substrate |
| CN117153713B (en) * | 2023-10-25 | 2024-02-02 | 江苏惠达电子科技有限责任公司 | Method, system and equipment control method for detecting residual pollutants of frequency components |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398696A (en) * | 2002-09-06 | 2003-02-26 | 薛松柏 | Lead-free solder |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398696A (en) * | 2002-09-06 | 2003-02-26 | 薛松柏 | Lead-free solder |
Non-Patent Citations (3)
| Title |
|---|
| JP昭61-17007A 1986.01.25 |
| 王恩泽等.涂层对氧化铝/耐热钢液间湿润角的影响及其应用.西安交通大学学报34 11.2000,34(11),78-81. |
| 王恩泽等.涂层对氧化铝/耐热钢液间湿润角的影响及其应用.西安交通大学学报34 11.2000,34(11),78-81. * |
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