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VERFAHREN ZUR HERSTELLUNG EINES MAGNETISCHEN SUBSTRATS FÜR EINE CODIERSKALA

Patentnummer:EP2681341B1
IPC Hauptklasse:G01B7/04
Anmelder:RENISHAW PLC (4)
RENISHAW PUBLIC LIMITED COMPANY (3)
RLS MERILNA TEHNIKA D O O (2)
RLS MERLINA TEHNIKA D O O (1)
RLS梅里那技术公司 (1)
アールエルエス メリルナ テニカ ディー.オー.オー. (2)
瑞尼斯豪公司 (1)
Erfinder:KOGEJ PETER (2)
LESKOVSEK VOJTEH (2)
Anmeldung:05.03.12
Patenterteilung:11.08.21
Einspruch bis:11.05.22

Abstract / Hauptanspruch
The present invention relates to a method for producing a magnetic substrate for an encoder scale. The method comprising the step of mechanically working the substrate, wherein the substrate is cooled prior to the mechanical working step. In one embodiment, a stainless steel substrate is used. The stainless steel may comprise an austenite (non-magnetic) phase and a martensite (magnetic) phase. Mechanically working and cooling in this manner increases the amount of magnetic (martensite) phase material that is formed, thereby improving the magnetic contrast when non-magnetic (austenite) marking are subsequently formed on the substrate by laser marking.


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