WO1980000891A1 - Methode de fabrication d'une bande magnetique metallique - Google Patents

Methode de fabrication d'une bande magnetique metallique Download PDF

Info

Publication number
WO1980000891A1
WO1980000891A1 PCT/JP1979/000261 JP7900261W WO8000891A1 WO 1980000891 A1 WO1980000891 A1 WO 1980000891A1 JP 7900261 W JP7900261 W JP 7900261W WO 8000891 A1 WO8000891 A1 WO 8000891A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic metal
magnetic
metal
metal layer
annealing
Prior art date
Application number
PCT/JP1979/000261
Other languages
English (en)
Japanese (ja)
Inventor
J Kawai
H Garashi
Original Assignee
Nippon Electric Co
J Kawai
H Garashi
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 Nippon Electric Co, J Kawai, H Garashi filed Critical Nippon Electric Co
Priority to DE792953244T priority Critical patent/DE2953244T1/de
Publication of WO1980000891A1 publication Critical patent/WO1980000891A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/657—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing inorganic, non-oxide compound of Si, N, P, B, H or C, e.g. in metal alloy or compound
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers

Definitions

  • the present invention relates to a method for manufacturing a metal magnetic table, and more particularly to a method for manufacturing a metal magnetic table having a structure in which a magnetic metal layer is provided on a nonmagnetic metal base.
  • the causes of static electricity in (1) include an increase in noise and a problem such as loss of memory due to adsorption of dust, etc. o
  • a countermeasure make it easier to discharge on the back of the base.
  • surface treatments and the like are performed, a significant effect is obtained.
  • the elongation deformation of (2) is related to the reproducibility of the recording medium in the first place. In order to effectively suppress the extensional deformation to a negligible size, the thickness of the base must be at least a few meters.
  • the thickness of the metal layer is controlled with good precision, and it is difficult to plate continuously.
  • C The metal structure formed by plating is fragile and temporarily annealed. Has the disadvantages that it softens before its brittleness is resolved, etc. 1—Not yet suitable for mass production on an industrial scale, but has not yet been put into practical use.
  • An object of the present invention is to solve the drawbacks of the plating method and to provide a method for producing a metal magnetic table having sufficient toughness and high productivity.
  • Toku ⁇ of is to provide a method for producing a blanking 0 present invention, the magnetic metal Cold rolling is performed while performing intermediate annealing with the non-magnetic metal adjacent to each other, and the reduction rate by cold rolling performed after the final intermediate annealing is set to 95 or more in terms of the reduction in area of the magnetic metal layer. After that, final annealing is performed in a reducing atmosphere or in a reducing atmosphere])), and a metal magnetic table having a laminated structure in which the magnetic metal layer and the non-magnetic metal layer are lined with each other is manufactured. O In this case, the final annealing temperature should be lower than the recrystallization temperature of the magnetic metal and higher than 300 ° C. Those with a reduction ratio in the range of 95 to 99.5 have excellent properties.o
  • the present invention there are advantages such as improvement of mechanical properties by cold rolling, for example, excellent toughness, high processing accuracy, excellent smoothness and flatness, and appropriate selection of annealing conditions.
  • the saturation magnetic flux density is large.
  • ⁇ ⁇ The magnetic metal layer can be formed with extremely excellent continuity.
  • the frequency characteristics are excellent.
  • the tensile strength is more than one order of magnitude higher than that of the above, so the thickness can be reduced to less than about '3 ⁇ m (conventionally, 10 m or less is usual :) and the storage capacity is also 3 to 4 Easy to mass-produce metal magnetic tables with outstanding performance and twice the size o Easy explanation of drawings
  • Figures 1 to 5 show typical laughing embodiments of the present invention.
  • FIG. 1 shows data on coercive force
  • Fig. 2 shows Fig. 3 shows data on residual magnetic flux density
  • Fig. 3 shows data on squareness ratio
  • Fig. 4 shows data on frequency characteristics
  • Fig. 5 shows data on high output characteristics. Showing o
  • Figure 1 shows the dependence of the coercive force on the annealing temperature, with the cold working rate as a parameter.
  • Figure 2 shows the dependence of the residual magnetic flux density on the annealing temperature, which is converted only to the magnetic metal layer. The temperature dependence is shown in Fig. 3. 0 As is clear from these data, a sufficient effect is exhibited when the cold working ratio is 95 or more.
  • the recrystallization temperature ( ⁇ 550) of the magnetic metal is a rough guide.]
  • the magnetic layer according to the present embodiment, annealed in the temperature range of about 300-550 ° C, has an extremely excellent magnetic property. O
  • the frequency characteristic is also
  • the large output characteristic is also one of the important characteristics.o Therefore, ⁇ )
  • the maximum output at 2 OKHz measured for the r-Fe 203 table commercial product is O dB.
  • Figure 5 shows the annealing temperature dependence of the large output characteristics of each of the tables in this Example o
  • the data shown in Figs. 4 and 5 also show the reduction in cold rolling. It is clear that the characteristics shown in this example are extremely excellent when the area ratio is 95 or more and annealing is performed at a low temperature not higher than the recrystallization temperature.
  • the head formed from the Mn-Zn lights obtained by hot breathing was attached to an ordinary video device, and the various tapes according to the present embodiment and the r-F The head was run for 1 000 hours with an e203 table to measure the amount of head wear. Table 1 shows the comparison of the results.o
  • the recrystallization temperature (about 55 to 0 in this example) is very small, regardless of the area loss rate of the steel annealed at low temperature. Annealing is possible even at annealing temperatures lower than. However, in this case, it takes a long time, so it is considered unsuitable for industrial use. Therefore, it is appropriate to set the annealing temperature to about 300 ° C. or less, which is about the recrystallization temperature or less.
  • both the magnetic metal and the non-magnetic metal are adjusted to a predetermined thickness ratio before the cold rolling of the present invention. And then cold rolling by direct lamination between these two metal plates without any intervening objects. ⁇ This is a minor contrivance compared to the two features described above.] Although it is possible to replace it with the other contrivances described later, both metal plates are stacked in order to prevent the two metal plates from shifting. Is fixed by welding prior to the cold rolling of the present invention.
  • the metal magnetic tape of the present invention in which the magnetic metal and the non-magnetic metal were combined in this manner, was cut to a width of 4 TO and then annealed in hydrogen at 500 for 10 minutes.
  • the thickness of the magnetic metal layer of the table thus obtained was about 0.3 m.o
  • the typical characteristic values were as follows.o
  • the coercive force was about 100 000 e
  • the residual magnetic flux density of the magnetic metal layer was about 9620 Gauss
  • the squareness ratio was about 89%.
  • r - F e 2_Rei 3 Te - (comparison value at 2 0 KH Z) the characteristic values of the probe frequency characteristics when the 0 dB is about 1 6.6 dB der, in 2 0 KH z Had a maximum output of 12.8 dB.
  • the wear amount of the nitride head was measured in the same manner as in Example 1, and as a result, when the wear amount of the Fes Os table was 1, it was 0.025 in this example.
  • Example 2 The above results are for the case where the final annealing temperature is 500 ° C. However, the results obtained by changing this in the temperature range below the recrystallization temperature (about 500) are almost the results obtained in Example 1. It has been proved that extremely good results can also be obtained by carrying out the present invention by a method such as that of this example.
  • the feature of the embodiment of the present invention described above as a representative of Example 2 is that when both a magnetic metal plate and a non-magnetic metal plate shaped to a predetermined thickness are overlapped with each other, the two metal plates are sandwiched between the two metal plates. And uniformly subjecting the metal powder having the desired solid solubility to cold rolling of the present invention in that state. O Further, a device for preventing the two metal plates from being displaced. In this case, the two metal plates are fixed with a wire rod.
  • a 2.44 ⁇ P-48.78 ⁇ Co-48.7 8 ⁇ Fe alloy was selected as the magnetic metal, and a plate with a thickness of 3.2 orchids and a width of 200 thighs was prepared. 5 # m plated with copper o Also selected pure copper as non-magnetic metal, prepared powder with an average particle size of 75 m o And the above-mentioned magnetic metal plate The copper powder deposited on the plating surface was powder-rolled together with the magnetic metal plate. O When the powder rolling was completed, the thickness of the magnetic metal plate was 3.1 and the thickness of the copper compact was 31.6 dragons.
  • the tape manufactured in this manner was processed in the same manner as in Example 2.
  • the coercive force was about 11,000 e
  • the remanence the flux density was about 22790 Gauss
  • the squareness ratio was about 93.
  • the frequency characteristic (comparison value at 20 KHz) is about 30.9 dB when the characteristic value of the 3 tables is 0 dB]), and the maximum output at 20 KHz is about 256 dB It was.
  • the amount of wear of the ferrite head measured in the same manner as in the above example was about 0.025 times the amount obtained by using r-Fe 203 table.
  • a feature of the embodiment of the present invention described above as a representative of Example 3 is that, first, one of a magnetic metal and a non-magnetic metal is started in a plate shape and the other is started in a powder shape.
  • treatment such as powder rolling and sintering should be performed so as not to impede the cold rolling. Therefore, a metal having the same familiarity as the metal in the form of a layer or a plate is plated on the surface to be joined of the metal prepared in the form of a plate to a desired thickness, and the penetration between the two metals is determined. Improvements are also one of the features of the present embodiment.
  • the “bow-shaped” deformation caused by the sintering process must be corrected by breathing before cold rolling.
  • Example 3 the non-magnetic metal was prepared as a powder, but it may be more convenient to use the magnetic metal as a powder.
  • the tube was cold-rolled so that the cross-sectional area reduction rate (the omission rate specified by the present invention, o :) of the rectangular pipe was 10 to 9 from 10 steps in 10 steps. o Subsequently, the upper surface of the rolled material processed at various reduction rates was cut until the magnetic metal compact was exposed. In this case, if the area ratio is less than 30, the density of the green compact is so low that the green compact breaks down. Cracks have occurred due to poorness. O For this reason, there are 5 types
  • this joint plate is cold 0. 6 Rolled to thickness and cut off non-metallic parts at both ends o
  • the subsequent steps were the same as in Example 2. 0 First, final intermediate annealing was performed in hydrogen at 850 for 15 minutes, The final cold-rolling rate at this time was 30.9 m, and the cold-rolling rate at this time was about 0.99.5 even in the area reduction rate of the magnetic metal layer. Afterwards, final annealing at 50 O'C o
  • Example 1 The characteristics of each of the thus obtained samples were evaluated in accordance with the above-mentioned Example. 0 As a result, the characteristics in Example 1 were reduced to 99.5%, and the characteristics obtained when final annealing was performed at -500. 0 Further it was found base of the same favorable properties, the final annealing temperature was varied were subjected to experimental study similar to the recrystallization temperature or more (about 5 5 0 °) or less 3 0 0 It has been confirmed that satisfactory results can be obtained in the region o
  • Example 4 The feature of the embodiment of the present invention described above as a representative of Example 4 is that, first, one of the magnetic metal and the non-magnetic metal is started in a tubular shape and the other is started in a powdery state. In order to fill the pipe with powder, the powder rolling and sintering shown in Example 3 were used! ) Also readily advantages force s 3 ⁇ 4 high density of the green compact can be formed> Ru.
  • Example 4 the non-magnetic metal was made into a tubular shape. On the contrary, it is sometimes convenient to make the magnetic metal into a tubular shape. This has been specifically described using an example. However, these embodiments are only examples. Among the features of each embodiment, those that can be replaced with each other can be replaced with each other, and by developing the concept, other realities and embodiments not described here can be easily reached. Things.
  • the other need not be made into a powdery form.
  • it is convenient o It is of course also meaningful to improve the conformability by plating the inner surface of the pipe o
  • the non-magnetic metal layer or the magnetic metal layer itself should be a multilayer. It is also within the scope of the present invention to improve its mechanical and electromagnetic characteristics.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)

Abstract

Une methode de fabrication d'une bande magnetique metallique consiste a laminer a froid un metal magnetique et un metal non magnetique lamines tout en faisant subir un recuit aux metaux pour etirer les metaux en une forme mince et faconner ceux-ci de sorte que le taux de travail final en termes de taux de reduction soit superieur a 95%. Cette methode est appropriee a une production en masse a echelle industrielle.
PCT/JP1979/000261 1978-10-16 1979-10-15 Methode de fabrication d'une bande magnetique metallique WO1980000891A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE792953244T DE2953244T1 (de) 1978-10-16 1979-10-15 Method of fabricating metallic magnetic tape

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP78/127162 1978-10-16
JP12716278A JPS5555441A (en) 1978-10-16 1978-10-16 Production of metallic magnetic tape

Publications (1)

Publication Number Publication Date
WO1980000891A1 true WO1980000891A1 (fr) 1980-05-01

Family

ID=14953169

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1979/000261 WO1980000891A1 (fr) 1978-10-16 1979-10-15 Methode de fabrication d'une bande magnetique metallique

Country Status (3)

Country Link
JP (1) JPS5555441A (fr)
DE (2) DE2953244T1 (fr)
WO (1) WO1980000891A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046239A2 (fr) * 1980-08-18 1982-02-24 Ibm Deutschland Gmbh Support d'enregistrement magnétique pour l'enregistrement vertical
WO2006082509A2 (fr) * 2005-02-06 2006-08-10 Wilsonart (Shanghai) Co., Ltd. Panneau phenolique et son procede d'obtention

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU411504A1 (fr) * 1971-11-26 1974-01-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU411504A1 (fr) * 1971-11-26 1974-01-15

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046239A2 (fr) * 1980-08-18 1982-02-24 Ibm Deutschland Gmbh Support d'enregistrement magnétique pour l'enregistrement vertical
EP0046239A3 (en) * 1980-09-18 1983-08-03 Ibm Deutschland Gmbh Magnetic record carrier for vertical recording
WO2006082509A2 (fr) * 2005-02-06 2006-08-10 Wilsonart (Shanghai) Co., Ltd. Panneau phenolique et son procede d'obtention
WO2006082509A3 (fr) * 2005-02-06 2007-02-08 Wilsonart Shanghai Co Ltd Panneau phenolique et son procede d'obtention

Also Published As

Publication number Publication date
DE2953244T1 (de) 1981-01-08
DE2953244C1 (de) 1982-12-02
JPS5555441A (en) 1980-04-23

Similar Documents

Publication Publication Date Title
US4217135A (en) Iron-boron-silicon ternary amorphous alloys
US5547520A (en) Wear-resistant high permeability magnetic alloy and method of manufacturing the same
EP0637038A2 (fr) Noyau magnétique pour transformateur d'impulsions et transformateur d'impulsions de sela
Luborsky et al. The role of amorphous materials in the magnetics industry
US3390443A (en) Magnetic material and devices utilizing same
JPS598050B2 (ja) 積層磁性材料及びそれを用いた積層構造体
WO1980000891A1 (fr) Methode de fabrication d'une bande magnetique metallique
CA1145162A (fr) Alliages amorphes ternaires de fer-bore-silicium
JPH08143994A (ja) 耐摩耗性高透磁率合金およびその製造法ならびに磁気記録再生ヘッド
JPS6212296B2 (fr)
US2912515A (en) Magnetic transducer head for tape recording, playback and erasing
JPH02275605A (ja) 軟磁性薄膜
JPS5833303B2 (ja) 鉄−ニッケル合金
JPH0742559B2 (ja) 占積率の優れた磁心用非晶質合金薄帯およびその製造方法
JPS58100412A (ja) 軟質磁性材料の製法
JP3251899B2 (ja) 耐摩耗性高透磁率合金および磁気記録再生ヘッド
JPH0138862B2 (fr)
JPH0310699B2 (fr)
JPH01119642A (ja) 高飽和磁束密度軟磁性材料
US3979233A (en) Magnetic Ni-Cr-Mn-Ge-Fe alloy
JPH02118056A (ja) 磁性材料及びそれを用いた磁気ヘッド
JPH0645847B2 (ja) 耐摩耗性高透磁率合金の製造法
Yim et al. Texture development of 50% Ni Fe strip by powder rolling
JPH05304014A (ja) 軟磁性の良好なＦｅ−Ｃｏ系軟磁性材料及び軟磁性電気部品組立体
JPS631642B2 (fr)

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): DE GB NL US

RET De translation (de og part 6b)

Ref country code: DE

Ref document number: 2953244

Date of ref document: 19810108

Format of ref document f/p: P