DE699687C - Process for dividing (cutting) or combining piezoelectric crystals with a low melting point, in particular seignette salt crystals - Google Patents
Process for dividing (cutting) or combining piezoelectric crystals with a low melting point, in particular seignette salt crystalsInfo
- Publication number
- DE699687C DE699687C DE1937H0150824 DEH0150824D DE699687C DE 699687 C DE699687 C DE 699687C DE 1937H0150824 DE1937H0150824 DE 1937H0150824 DE H0150824 D DEH0150824 D DE H0150824D DE 699687 C DE699687 C DE 699687C
- Authority
- DE
- Germany
- Prior art keywords
- crystals
- dividing
- cutting
- melting point
- low melting
- 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.)
- Expired
Links
- 239000013078 crystal Substances 0.000 title claims description 31
- 238000000034 method Methods 0.000 title claims description 8
- 238000002844 melting Methods 0.000 title claims description 6
- 230000008018 melting Effects 0.000 title claims description 6
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 title claims description 4
- 235000011006 sodium potassium tartrate Nutrition 0.000 title claims description 4
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
Verfahren zum Zerteilen (Zerschneiden) bzw. Vereinigen von piezoelektrischen Kristallen mit niedrigem Schmelzpunkt, insbesondere Seignettesalzkristallen Um piezoelektrische Kristalle zu zerteilen, ist es bekannt, die .üblichen mechanischen Verfahren, wie Sägen, Fräsen, Hobeln, Schleifen usw., anzuwenden. Diese mechanische Bearbeitungsweise bereitet bei Kristallen von großer Sprödigkeit und Zerbrechlichkeit, insbesondere bei Seignettesalzkristallen, große Schwierigkeiten, so daß in der Regel nur mit ganz bestimmten Schnittgeschwindigkeiten, Anstellwinkeln und besonders ausgesuchtem Werkzeugmaterial eine Zerteilung gelingt, ohne daß der Kristall zerbricht. Falls es sich um die Bearbeitung sehr dünner Kristallplättchen handelt, steigt die Bruchgefahr so sehr, daß die erwähnten Verfahren kaum noch angewandt werden können. Beim Zersägen von Kristallen ist es bekanntgeworden, Maßnahrnen anzuwenden, welche die örtliche Erwärmung des Kristalls an seiner Bearbeitungsstelle unschädlich machen sollen, indem beispielsweise das ganze -Kristallstück auf eine genügend hohe Temperatur vorgewärmt und die Säge dagegen gekühlt wird. Bei -der Zerteilung dünner Kristallplättchen jedoch schließt -dieses bekannte Verfahren eine Bruchgefahr nicht aus.Process for dividing (cutting) or combining piezoelectric Low melting point crystals, especially Seignette salt crystals To be piezoelectric To break up crystals, it is known to use the usual mechanical methods, such as Sawing, milling, planing, grinding, etc., to be used. This mechanical processing method prepares for crystals of great brittleness and fragility, in particular with Seignette salt crystals, great difficulties, so that usually only with very specific cutting speeds, angles of attack and specially selected ones Tool material can be broken up without breaking the crystal. If If very thin crystal flakes are to be processed, the risk of breakage increases so much so that the procedures mentioned can hardly be used any more. When sawing of crystals it has become known to apply measures that reflect the local Heating the crystal at its processing point should render it harmless, for example by bringing the whole crystal piece to a sufficiently high temperature preheated while the saw is cooled. When dividing thin crystal flakes However, this known method does not exclude the risk of breakage.
Bei dem vorliegenden Verfahren zum Zerteilen (Zerschneiden) bzw. Vereinigen von piezoelektrischen Kristallen mit niedrigem Schmelzpünlzt, insbesondere von Seigtvettesalzkristallen, -werden dagegen erfindungsgemäß die Kristalle an ihren Zerteilungs- bzw. Vereinigungsstellen durch Wärmeleitung zum Schmelzen gebracht.In the present method for dividing (cutting) or combining of piezoelectric crystals with a low melting point, in particular of Seigtvette salt crystals, In contrast, according to the invention, the crystals are at their points of division or union melted by conduction.
In der Abbildung ist beispielsweise das Zerteilen eines Kristalls dargestellt. Die benutzte Vorrichtung besteht aus einem zwischen zwei an einer Grundplatte schwenkbar angeordneten Armen ,a und b gespannten Drahte, .der durch Stromzufuhr bei d und e auf die erforderliche Temperatur gebracht wird. f ist der auf der Grundplatte aufgelegte Kristall, von dem ein. Stück mit Hilfe des erwärmten Drahtes e abgetrennt werden soll. Zu diesem Zweck wird der Draht mittels der Arme a, b, mit denen zuzsammen er einen schwenkbaren Bügel bildet, leicht gegen den Xristall gedrückt. An der Stelle, an der der erwärmte Draht den Kristall berührt, beginnt dieser zu schmelzen, so daß der Draht auf diese Weise durch den .ganzen Kristall hindurchgeführt, werden kann. Die beiden Trennflächen sind nach Durchschneiden des Kristalls hinreichend eben, so daß sie keiner Nachbearbeitung bedürfen.For example, the illustration shows cutting a crystal. The device used consists of a wire stretched between two arms, a and b, which are pivotably arranged on a base plate and which is brought to the required temperature by supplying current at d and e. f is the crystal placed on the base plate, of which one. Piece is to be cut off with the help of the heated wire e. For this purpose, the wire is pressed lightly against the crystal by means of the arms a, b, with which together it forms a pivotable bracket. At the point where the heated wire touches the crystal, it begins to melt, so that the wire can be guided through the whole crystal in this way. After cutting through the crystal, the two separating surfaces are sufficiently flat that they do not require any post-processing.
Das Zusammenfügen zweier aufeinandergelegter Kristallplatten,. zwischen denen sich auch eine Elektrodenbelegüng befinden kann, geschieht, indem man mit einem erhitzten Gegenstand, z. B. einem Blech, an den Kanten -der beiden aufeinandergelegten Platten entlang streicht. Dabei kommen die Platten an ihrem Rande zum Schmelzen und.zerfließen zu einer homogenen Masse. Auch in diesem Fall sind die so miteinander vereinigten Platten ohne weiteres für den ihnen zugedachten Verwendungszweck tauglich.The joining of two crystal plates placed one on top of the other. between which can also have an electrode covering, is done by pressing a heated object, e.g. B. a sheet, at the edges -the two stacked Strokes along plates. The plates melt at their edge and dissolve into a homogeneous mass. In this case, too, they are like that with each other combined plates are easily suitable for their intended use.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937H0150824 DE699687C (en) | 1937-02-27 | 1937-02-27 | Process for dividing (cutting) or combining piezoelectric crystals with a low melting point, in particular seignette salt crystals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937H0150824 DE699687C (en) | 1937-02-27 | 1937-02-27 | Process for dividing (cutting) or combining piezoelectric crystals with a low melting point, in particular seignette salt crystals |
Publications (1)
Publication Number | Publication Date |
---|---|
DE699687C true DE699687C (en) | 1940-12-04 |
Family
ID=7181013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1937H0150824 Expired DE699687C (en) | 1937-02-27 | 1937-02-27 | Process for dividing (cutting) or combining piezoelectric crystals with a low melting point, in particular seignette salt crystals |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE699687C (en) |
-
1937
- 1937-02-27 DE DE1937H0150824 patent/DE699687C/en not_active Expired
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