DE931661C - Annealing of magnetic materials - Google Patents

Annealing of magnetic materials

Info

Publication number
DE931661C
DE931661C DEHG60D DEHG000060D DE931661C DE 931661 C DE931661 C DE 931661C DE HG60 D DEHG60 D DE HG60D DE HG000060 D DEHG000060 D DE HG000060D DE 931661 C DE931661 C DE 931661C
Authority
DE
Germany
Prior art keywords
annealing
hydrogen
annealed
permeability
magnetic materials
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
DEHG60D
Other languages
German (de)
Inventor
Fritz Dr Assmus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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 Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Priority to DEHG60D priority Critical patent/DE931661C/en
Application granted granted Critical
Publication of DE931661C publication Critical patent/DE931661C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)

Description

Gegenstand des Patents 927 997 ist die . Anwendung des Verfahrens, weichmagnetische Werkstoffe in feuchtem Wasserstoff zu glühen, - für solche Zwecke, bei denen die Werkstoffe bei verhältnismäßig hoher Permeabilität. im Bereiche geringer Feldstärken einen geringen Anstieg der Permeabilität- aufweisen sollen.The subject of patent 927 997 is. Application of the procedure, to glow soft magnetic materials in moist hydrogen, - for such purposes, where the materials have a relatively high permeability. in the area lower Field strengths should have a slight increase in permeability.

Es hat sich nun gezeigt, daß bei diesem Glühverfahren die Menge des Wasserdampfzusatzes zu dem Wasserstoff einen erheblichen Einfluß auf die Höhe der Permeabilität und den Anstieg der Permeabilität des Glühgutes besitzt. Die Menge des zuzusetzenden Wasserdampfes ist dabei abhängig von der Zusammensetzung des zu glühen= den Werkstoffes und insbesondere auch von der Banddicke.It has now been shown that in this annealing process, the amount of The addition of water vapor to the hydrogen has a considerable influence on the level of Permeability and the increase in permeability of the material to be annealed. The amount of the water vapor to be added depends on the composition of the to anneal = the material and especially the strip thickness.

Wie in den Abb. i und 2 gezeigt wird, dRe den Anstieg der Permeabilität zwieohen, 2o und ioo mÖ und die Anfangspermeabilität (gemessen bei 2o mÖ) in Abhängigkeit von dem Wassergehalt des Wasserstoffes zeigen, erhält man an einem Band aus einer Eisenlegierung mit 2,5 % Silizium und einer Banddicke von 0,35 mm bei einer Glühtemperatur von 78o° C eine Verbesserung der Permeabilität und des Anstieges bei Erhöhung des Wassergehaltes bis zu 3o g Wasser auf den Kubikmeter Wasserstoff. Bei einer Banddicke von o,o5 mm reicht schon ein Wassergehalt von etwa 5 g Wasser auf den Kubikmeter Wasserstoff aus, um den günstigsten Permeabilitäts- und Anstiegswert zu erreichen. Erfindungsgemäß -soll deshalb der Wassergehalt des Wasserstoffes je nach Werkstoffart und Banddicke des zu glühenden magnetischen Werkstoffes so gewählt werden, daß Anfangspermeabilität und Anstieg. jeweils Bestwerte aufweisen.As shown in Figs. 1 and 2, that shows the increase in permeability between 2o and 100 mÖ and the initial permeability (measured at 2o mÖ) as a function of the water content of the hydrogen, is obtained on a band made of an iron alloy with 2 , 5% silicon and a strip thickness of 0.35 mm at an annealing temperature of 78o ° C, an improvement in permeability and the increase in the increase in the water content up to 30 g of water per cubic meter of hydrogen. With a strip thickness of 0.05 mm, a water content of around 5 g of water per cubic meter of hydrogen is sufficient to achieve the most favorable permeability and rise value. According to the invention, the water content of the hydrogen should therefore be chosen, depending on the type of material and strip thickness of the magnetic material to be annealed, so that initial permeability and increase. each have the best values.

Claims (3)

PATENTANSPRÜCHE: i. Die Anwendung des Verfahrens, weichmagnetische Werkstoffe in feuchtem Wasserstoff zu glühen nach Patent 927 997, dadurch gekennzeichnet, daß der Wassergehalt des Wasserstoffes so gewählt wird, daß sich in Abhängigkeit von der Werkstoffzusammensetzung und der Banddicke des zu glühenden Werkstoffes nach der Glühung für Permeabilität und Anstieg jeweils Bestwerte ergeben. PATENT CLAIMS: i. The application of the process of annealing soft magnetic materials in moist hydrogen according to patent 927 997, characterized in that the water content of the hydrogen is chosen so that, depending on the material composition and the strip thickness of the material to be annealed, after annealing for permeability and increase result in best values in each case. 2. Anwendung des Verfahrens nach Anspruch i, dadurch gekennzeichnet, daß eine Eisen-Silizium-Legierung von 0,35 mm Dicke in einer Wasserstoffatmosphäre mit einem Gehalt von 30 g H20 pro Kubikmeter H2 bei Temperaturen unter iooo° C geglüht wird. 2. Application of the method according to claim i, characterized in that an iron-silicon alloy 0.35 mm thick is annealed in a hydrogen atmosphere with a content of 30 g H20 per cubic meter H2 at temperatures below 100 ° C. 3. Anwendung. des Verfahrens nach Anspruch i, dadurch gekennzeichnet, daß eine Eisen-Silizium-Legierung von 0,05 mm Dicke in einer Wasserstoffatmosphäre mit einem Gehalt von 5 g H2 O pro Kubikmeter H2 bei Temperaturen unter iooo° C geglüht wird.3. Application. of the method according to claim i, characterized in that an iron-silicon alloy 0.05 mm thick is annealed in a hydrogen atmosphere with a content of 5 g H2 O per cubic meter H2 at temperatures below 100 ° C.
DEHG60D 1942-12-19 1942-12-19 Annealing of magnetic materials Expired DE931661C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEHG60D DE931661C (en) 1942-12-19 1942-12-19 Annealing of magnetic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEHG60D DE931661C (en) 1942-12-19 1942-12-19 Annealing of magnetic materials

Publications (1)

Publication Number Publication Date
DE931661C true DE931661C (en) 1955-08-16

Family

ID=7141961

Family Applications (1)

Application Number Title Priority Date Filing Date
DEHG60D Expired DE931661C (en) 1942-12-19 1942-12-19 Annealing of magnetic materials

Country Status (1)

Country Link
DE (1) DE931661C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1153045B (en) * 1957-11-15 1963-08-22 Gen Electric Process for the simultaneous annealing and decarburization of cold-worked silicon steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1153045B (en) * 1957-11-15 1963-08-22 Gen Electric Process for the simultaneous annealing and decarburization of cold-worked silicon steel

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