RO94444B1 - Procedeu de obtinere a materialelor metal-grafitice pentru perii electrice - Google Patents

Procedeu de obtinere a materialelor metal-grafitice pentru perii electrice

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Publication number
RO94444B1
RO94444B1 RO122467A RO12246786A RO94444B1 RO 94444 B1 RO94444 B1 RO 94444B1 RO 122467 A RO122467 A RO 122467A RO 12246786 A RO12246786 A RO 12246786A RO 94444 B1 RO94444 B1 RO 94444B1
Authority
RO
Romania
Prior art keywords
metal
obtaining
electric brushes
graphite materials
manufacture
Prior art date
Application number
RO122467A
Other languages
English (en)
Other versions
RO94444A2 (ro
Inventor
Alexandrina Obretin
Nicolae Duinea
Pavel Roman
Original Assignee
Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Industria Electrotehnica
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 Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Industria Electrotehnica filed Critical Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Industria Electrotehnica
Priority to RO122467A priority Critical patent/RO94444B1/ro
Publication of RO94444A2 publication Critical patent/RO94444A2/ro
Publication of RO94444B1 publication Critical patent/RO94444B1/ro

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Abstract

Inventia se refera la un procedeu de fabricare a materialelor metal-grafitice pentru confectionarea periilor electrice destinate motoarelor de curent continuu de diferite tipuri, care în scopul consumului diminuat de materii prime deficitare si a realizarii de rezistivitati adecvate foloseste un amestec de grafit natural purificat avînd si o compozitie granulometrica de 10% 40 miu m din care 5% 63 miu m cu pulbere de cupru electrolitica, pulbere de plumb, novolac fenolformaldehidic si hexametilentetramina în proportii prestabilite, rezultînd un amestec omogenizat care se introduce în matrita si se preseaza, dupa care placile obtinute sînt tratate termic la temperatura de 700 degree C în paliere de temperatura prestabilite în cuptoare electrice, în vederea sinterizarii.
RO122467A 1986-03-06 1986-03-06 Procedeu de obtinere a materialelor metal-grafitice pentru perii electrice RO94444B1 (ro)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO122467A RO94444B1 (ro) 1986-03-06 1986-03-06 Procedeu de obtinere a materialelor metal-grafitice pentru perii electrice

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO122467A RO94444B1 (ro) 1986-03-06 1986-03-06 Procedeu de obtinere a materialelor metal-grafitice pentru perii electrice

Publications (2)

Publication Number Publication Date
RO94444A2 RO94444A2 (ro) 1988-06-30
RO94444B1 true RO94444B1 (ro) 1988-07-01

Family

ID=20119108

Family Applications (1)

Application Number Title Priority Date Filing Date
RO122467A RO94444B1 (ro) 1986-03-06 1986-03-06 Procedeu de obtinere a materialelor metal-grafitice pentru perii electrice

Country Status (1)

Country Link
RO (1) RO94444B1 (ro)

Also Published As

Publication number Publication date
RO94444A2 (ro) 1988-06-30

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