DE693896C - Process for refining chemically sharpened files - Google Patents

Process for refining chemically sharpened files

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Publication number
DE693896C
DE693896C DE1934L0085623 DEL0085623D DE693896C DE 693896 C DE693896 C DE 693896C DE 1934L0085623 DE1934L0085623 DE 1934L0085623 DE L0085623 D DEL0085623 D DE L0085623D DE 693896 C DE693896 C DE 693896C
Authority
DE
Germany
Prior art keywords
files
refining
sharpened
hydrogen
chemically sharpened
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
Application number
DE1934L0085623
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German (de)
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Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1934L0085623 priority Critical patent/DE693896C/en
Application granted granted Critical
Publication of DE693896C publication Critical patent/DE693896C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)

Description

'Verfahren zum Veredeln von auf chemischem Wege geschärften Feilen Die vorliegende Erfindung betrifft ein Verfahren zum Veredeln von auf chemischem Wege geschärften Feilen. Es handelt sich hierbei also um ein Verfahren, welches derartige Feilen, die bisweilen gegenüber neuen Feilen etwas unterlegen erscheinen, hochwertiger machen soll.'' Process for refining chemically sharpened files The present invention relates to a method for refining on chemical Ways sharpened files. So this is a process which files of this type, which sometimes appear to be somewhat inferior to new files, should make it higher quality.

Es ist eine bekannte Tatsache, daß die chemische Schärfung, wie sie z. B. im Patent 586232 beschrieben ist, zwar in der Mehrzahl hervorragende Resultate ergibt, daß es aber, doch vorkommt, daß danach geschärfte Feilen oder feilenartige Werkzeuge, wie Raspeln und Fräser, den praktischen Anforderungen nicht entsprechen. Bei derartigen Feilen zeigte sich nun, daß man dieselben durch geeignete Nachbehandlung praktisch zu hochwertigen Werkzeugen veredeln kann, so daß die Standfestigkeit der chemisch geschärften Feilen, Raspeln u. dgl. erheblich ansteigt.It is a known fact that chemical sharpening, as used e.g. B. is described in patent 586232 , although the majority gives excellent results, but it does happen that then sharpened files or file-like tools, such as rasps and cutters, do not meet the practical requirements. In the case of files of this type, it has now been shown that they can practically be refined into high-quality tools by suitable subsequent treatment, so that the stability of the chemically sharpened files, rasps and the like increases considerably.

Das Verfahren der vorliegenden Erfindung besteht darin, daß die chemisch geschärften Feilen auf elektrochemischem Wege mit Wasserstoff beladen werden. Diese Beladung erfolgt dadurch, daß man die Werkzeuge bei der Wasserzersetzung kathoidisch schaltet, d. h. man zersetzt durch elektrischen Strom Wasser und verwendet hierbei als Kathode die Werkzeuge.The method of the present invention is that the chemically sharpened files are electrochemically charged with hydrogen. These Loading takes place in that the tools are cathodic during the decomposition of water switches, d. H. water is broken down by electric current and used for this as cathode the tools.

Das Härten von Metallen durch kathodische Schaltung derselben bei der Wasserzersetzung . ist an und für sich,bekannt, ebenso bekannt ist aber, daß eine Wasserstoffbeladung Metalle normalerweise brüchig macht; es muß daher als überraschend angesehen werden, daß man im vorliegenden Falle einen erheblichen, technisch verwertbaren Effekt zu erzielen vermag. Ebenso ist es bereits bekannt, daß-man Werkzeuge, wie Feilen, beim Verchromen gleichzeitig riiit Wasserstoff zu beladen vermag. Ebenso war es aber bekannt, daß eine solche Härtung sehr bald wieder verlor.engeht. Zudem bedeutet eine Beladung der Feilen mit Metallen aus verschiedenen Gründen eher einen Nachteil als Vorteil, zumal da bekanntermaßen solche Metallüberzüge dazu neigen, abzublättern, oder sie sind weicher als das darunterliegende Material, zumindest aber erfolgt ihre Abscheidung so, Ilaß die Schärfe der Kanten verlorengeht.The hardening of metals by cathodic connection of the same the decomposition of water. is in and of itself known, but it is also known that a hydrogen charge usually makes metals brittle; it must therefore be surprising be considered that in the present case a considerable, technically usable Able to achieve an effect. Likewise, it is already known that-one tools such as Files, while chrome-plating, can simultaneously charge with hydrogen. as well but if it was known that such a hardening would very soon be lost again. In addition If the files are loaded with metals, for various reasons it means rather one Disadvantage as an advantage, especially since it is known that such metal coatings tend to peel off, or they'll be softer than the underlying material, at least but they are deposited in such a way that the sharpness of the edges is lost.

Durch das nachfolgende Beispiel wird der Erfindungsgegenstand erläutert: Nach dem Verfahren des Patents 586232 geschärfte Feilen und Raspeln werden als Kathoden in ein Bad gebracht, welches 12 bis 20% Kaliümchlorid und o,8% Salzsäure enthält. Die Badtemperatur beträgt q.o bis 6o°, die Spannung 2 bis 3 Volt bei einer Stromdichte von 2 bis io Amp./qdm. Die Beladung erfolgt sehr rasch, sie ist nach etwa zo Minuten beendet. Die Erhöhung der Standfestigkeit beträgt bei normalen Feilen etwa i o bis 3 o %..The subject of the invention is illustrated by the following example: Files and rasps sharpened according to the method of patent 586232 are placed as cathodes in a bath which contains 12 to 20% potassium chloride and 0.8% hydrochloric acid. The bath temperature is qo to 60 °, the voltage is 2 to 3 volts with a current density of 2 to 10 amp./qdm. The loading takes place very quickly, it is finished after about ten minutes. The increase in stability of normal files is around 10 to 3 o%.

Claims (1)

PATENTANSPRUCH: Verfahren zum Veredeln von auf chemischem Wege durch Ätzung geschärften Feilen, gekennzeichnet durch eine nachfolgende Beladung der Felenoberüäche mit Wasserstoff durch kathodische Schaltung der Feile in einem geeigneten Elektrolyt, der bei der Elektrolyse neben der Wasserstoffentwicklung an der Kathode keine iVIetallabscheidung bewirkt..PATENT CLAIM: Process for refining by chemical means Etching of sharpened files, characterized by a subsequent loading of the rock surface with hydrogen by cathodic connection of the file in a suitable electrolyte, During electrolysis, in addition to the evolution of hydrogen at the cathode, there is no iVIetallabscheidung causes ..
DE1934L0085623 1934-03-30 1934-03-30 Process for refining chemically sharpened files Expired DE693896C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1934L0085623 DE693896C (en) 1934-03-30 1934-03-30 Process for refining chemically sharpened files

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1934L0085623 DE693896C (en) 1934-03-30 1934-03-30 Process for refining chemically sharpened files

Publications (1)

Publication Number Publication Date
DE693896C true DE693896C (en) 1940-07-20

Family

ID=7285945

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1934L0085623 Expired DE693896C (en) 1934-03-30 1934-03-30 Process for refining chemically sharpened files

Country Status (1)

Country Link
DE (1) DE693896C (en)

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