JPS5814499B2 - Kakugata Hysteresis Jisei Gokin Oyobi Sonoseizouhouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention consists of Fe, Nb and CO, or has Fe, Nb and CO as the main component, and V, Ta, Cr, M0, W as subcomponents.
, Ni, Cu, Ti, Zr, Si, Al, Ge, Sn,
This relates to a rectangular hysteresis magnetic alloy consisting of one or more elements of Sb, Be, Mn, Ce, and C and containing a small amount of impurities, and a method for producing the same. The object of the present invention is to obtain a square hysteresis magnetic alloy that has good square hysteresis characteristics and is easy to forge and process.

Currently, prismatic magnetic materials with high residual magnetic flux density, angular hysteresis, and coercive force of several Oersteds to several tens of Oersteds are currently used as magnetic materials for memory elements, ferrets, and latching relays in electromagnetic equipment. alloy is used.

Some of these products require advanced processing or work such as glass sealing, so they are highly processable and have stable magnetic properties even when heated at high temperatures (approximately 800°C). Something is desired.

Conventionally, Fe-
Examples include C, Fe-Mn, Fe-C0, and Fe-Ni alloys.

However, Fe-C and Fe-Mn alloys are inexpensive and
However, it has the disadvantage that its magnetic properties deteriorate significantly when heated at high temperatures, and Fe-C0 and Fe-
Since Ni-based alloys require advanced processing techniques, they cannot be said to be fully industrially satisfactory.

Previously, the present inventors filed a patent application (Japanese Patent Application No. 49-9684) for Fe-Nb binary alloy because it has excellent properties as a square hysteresis magnetic alloy.
From subsequent research results, it was found that adding Fe--NbZ elemental alloy C0 improves square hysteresis, increases residual magnetic flux density and coercive force, and improves stability of magnetic properties during high-temperature heating.

In addition, when sealing glass, it is desirable to have a small thermal expansion percentage that matches the material of the glass, but Fe-N of C0
The addition of B to binary alloys has the advantage of reducing the thermal expansion percentage.

That is, Nb9.5-10.0%, C00.01-5
5. 0% and the balance Fe, or with this as the main component and as a subcomponent V10.0% or less, Ta25
．． 0% or less, Crl 5.0% or less, M0 20.0% or less, W 20.0% or less, Ni 15.0% or less, Cu 10.
O% or less, Ti5.0% or less, Zr5.0% or less, Si
5.0% or less, Al 5.0% or less, Ge 5.0% or less,
Sn5. 0% or less, sbs. 0% or less, Be 3.0% or less, Mn 10. Ofb or less, ce2.0% or less, and one or more of two or more of C1.5% or less, total 0.01~
30.0% and a small amount of impurities has a large residual magnetic flux density, excellent square hysteresis, a coercive force of 2 Oe or more, is easy to process, and has stable magnetic properties even when heated at high temperatures. We discovered that it is a magnetic alloy with excellent properties.

Therefore, the present invention provides a prismatic hysteresis magnetic alloy that has a large residual magnetic flux density, exhibits prismatic hysteresis, has a coercive force of 2 Oe or more, and is easy to forge and form, and a method for manufacturing the same. The invention alloy is suitable as a magnetic material for the above-mentioned electromagnetic equipment that requires square hysteresis characteristics.

To make the alloy of the present invention, first the main component Nb0.5 to 1
0.0%, C09.5-55.0% and the balance Fe,
v10.0% or less of subcomponents, Ta2s. 0% or less, Cr
15.0% or less, MO20.0% or less, W20.0% or less, Nix5.0% or less, Cul0.0% or less, Ti5
．． 0% or less, Zr5.0% or less, Si5.0% or less, A
l5.0% or less, Ge5. O'% or less, Sn5.0% or less, Sbs. 0% or less, Be3.0% or less, Mnt0.
0% or less, ce2.0% or less, and CI. After melting an appropriate amount of 0.01 to 30.0% of one or more types of manganese (total of 0.01 to 30.0%) of 5% or less in air, preferably in a non-oxidizing atmosphere or in vacuum using an appropriate melting furnace, manganese Add a small amount (1% or less) of silicon, aluminum, titanium, calcium alloy, magnesium alloy, or other deoxidizing agent or desulfurizing agent to remove as many impurities as possible, and stir thoroughly to obtain a compositionally uniform molten alloy. .

Next, this is poured into a mold of an appropriate shape and size to obtain a sound ingot, which is then forged or hot-worked at a high temperature to form an appropriate shape, such as a bar or plate. If necessary, annealing is performed at a temperature of about 400° C. or higher.

This is then subjected to cold working at a processing rate of 50% or more by methods such as swaging, wire drawing, or rolling to form a desired shape, such as a thin wire or a thin plate.

Furthermore, by heating these cold-worked products at a temperature of 400°C or more in air, preferably in a non-oxidizing atmosphere or in vacuum, an excellent rectangular hysteresis magnetic alloy having a coercive force of 2 Oe or more can be produced. is obtained.

The above-mentioned cold working has a remarkable effect of aligning the dominant direction of the crystals of the alloy, especially when the working is carried out at an n-day T ratio of 50% or more.

Further, the heating performed subsequent to the above-mentioned cold working improves the squareness characteristics through removal of working strain, recrystallization, transformation, precipitation, etc., and this effect is particularly large when heated at 400° C. or higher.

Next, embodiments of the present invention will be described.

Example 1 Alloy number 32 (composition pe=7t0%, Nb=3.5%,
Electrolytic iron with a purity of 99.9%, niobium and cobalt with a purity of 99.8% were used as raw materials for producing the alloy with C0 = 25.5%).

To make the sample, raw materials with a total weight of 700 g were placed in an alumina crucible, melted in air in a high-frequency induction electric furnace, and then
The mixture was thoroughly stirred to obtain a homogeneous molten alloy.

Next, this was poured into a mold with a hole of 25 mm in diameter and 170 mm in height, and the resulting ingot was forged at about 1000°C to form 9 bars with 4 rods in diameter, annealed at 1000°C for 1 hour, and then cooled in water. , and then cold drawn to a diameter of 0. The line was set at 5 mrn.

The processing rate (area reduction rate) in this case is 98%.

Furthermore, after cutting a length of 26 cm from this line and subjecting it to various heat treatments, the squareness ratio (Br/B1oo), which is the ratio of the residual magnetic flux density, Br, to the magnetic flux density B100 when the magnetic field is 100 Oe, is expressed as a percentage. The values of 100 and coercive force Hc were measured, and the characteristics shown in Table 1 were obtained.

Alloy number 323 (composition Fe = 53.5%, Nb = 4
．． Coordination 5, co=27.0%, Mo=5. 5%,
W=5.0%, Cu=3.0%, Mn=1. 5
4) The raw materials for producing the alloy used were iron, niobium and cobalt of the same purity as in Example 1, molybdenum and tungsten of 99.9% purity, and copper and manganese of 99.8% purity.

The sample manufacturing method was the same as in Example 1.

The samples were subjected to various heat treatments to obtain the properties shown in Table 2.

The characteristics of typical alloys of the present invention are shown in Table 3.

As can be seen from the above examples and Table 3, Fe, N
consisting of b and Co or having these as the main components,
V, Ta y Cr + Mo as subcomponents
, WtNi, Cu, Ti, Zr, Si, ACGe,
One or two of Sn, Sb, BeMn, Ce, and C
The alloy of the present invention, which has a coercive force of 2 Oe or more and a large residual magnetic flux density, can be obtained by cold working at a processing rate of 50 or higher and then heating it at 400°C or higher. It is a magnetic alloy with

In addition, the alloy of the present invention is subjected to cold working at a working rate of 50 or more,
It has the advantage that the squareness does not deteriorate easily even if the squareness is imparted by heating to 400° C. or higher and then further heated or cold worked.

The alloys of the present invention are therefore advantageous in producing products that require glass sealing or further processing after final heat treatment.

It has been described above that the properties of the alloy of the present invention can be obtained by cold working at a working ratio of 50 or higher and then heating at a temperature of 400°C or higher, but even if this cold working and heating are repeated, , it is a matter of course that good squareness characteristics can be obtained.

The alloys listed in each example and Table 3 contain relatively pure metals Nb, Cr, Mo, W, and Mn.
, VTi, Al, Si, Ce, and C, etc., but economically advantageous commercially available Hueguchi alloys and Mitshu metals can be used instead of these if sufficient deoxidation and desulfurization are performed during melting. Almost the same magnetic properties and workability as using these metals can be obtained.

As mentioned above, the alloy of the present invention has excellent square properties and a large coercive force, so it is suitable as a magnetic material for the core of hysteresis motors, as well as the above-mentioned electromagnetic equipment that requires square properties.

Next, in the present invention, the composition of the alloy is NbO. 5-1 o.
o%, Co 9.5-55.0% and the balance Fe, or with this as the main component and the elements added as subcomponents V10.0% or less, Ta2 5.0% or less,
Cr15. O% or less, MO20.0% or less, W20.0
Section below, Ni15. o% or less, CulO. 0% or less, T
i5. o% or less Zr5.0% or less, Si5.0% or less,
Al5. O% or less, Ge5.0% or less, Sn5.0% or less, Sb5. 0% or less, Be3. 0% or less, Mn 10
．． 0 coefficient or less, Ce2.0% or less, and CI. The reason why it is limited to 5% or less is that, as is clear from each example and FIGS. 1 to 6, the coercive force in the composition range is 2 Oe or more, exhibits excellent square hysteresis characteristics, and has good workability. However, if the composition is outside this range, the magnetic properties will deteriorate and processing will become difficult, making it unsuitable as a square hysteresis magnetic alloy.

Figure 1 shows the N content of Fe-Nb-20% Co alloy.
It is a characteristic curve diagram showing the magnetic properties when the alloys of the present invention with different amounts of b are subjected to cold working at a processing rate of 95% and then heated at 650°C for 3 hours, as is clear from the figure. , Nbo
．． If it is less than s%, the effect on squareness and coercive force is small, and if it is more than 10% Nb, the residual magnetic flux density becomes small, making processing difficult, which is not preferable.

Figure 2 shows the same <Fe-2. 5% Nb-co alloy with different amounts of Co, subjected to the same cold working and heat treatment as described above. As is clear from the figure, the addition of Co As the amount increases, the coercive force, residual magnetic flux density, and squareness all improve.

However, if Co exceeds 55%, cutting becomes difficult, which is not preferable.

Figure 3 shows Fe-2. 5%Nb-20%
A characteristic diagram showing the magnetic properties of an alloy of the present invention obtained by adding TayMo, W or Ni to Co and subjected to similar cold working and heat treatment is shown.
When Ta, Mo, W or Ni is added to Nb-20%Co alloy, both coercive force and squareness increase, but Ta
25% or more, Mo20% or more, W20 or more, Ni
15% or more, Cr. If it exceeds 15%, the residual magnetic flux density becomes small, which is not preferable.

Figure 4 shows the same <Fe-2.5%Nb-20
%Co alloy with V 2 , Cr 2 , Cu or Mn, and similarly subjected to cold working and heat treatment.
-2. When V, Cr, Cu, or Mn is added to a 5%Nb T-20%Co alloy, both the coercive force and the squareness increase, but V10% or more, CulO% or more,
If the Mn ratio exceeds 10, the residual magnetic flux density decreases and processing becomes difficult, which is not preferable.

Figure 5 shows the same <Fe-2.5%Nb-20%Co alloy with Ti, Zr, Si, AA or Ge added.
Similarly, a characteristic diagram showing the magnetic properties of the alloy of the present invention subjected to cold working and heat treatment is shown, and as is clear from the figure, Fe −
2. 5%Nb-20%Co alloy with Ti and ZrS
If any of i, Al, or Ge is added, the coercive force and squareness will increase, but if Ti is added at least 5%, Zr at least 5%, or
If i is more than 5%, Al5fO or more, or Ge is more than 5%, the residual magnetic flux density decreases and processing becomes difficult, which is not preferable.

Figure 6 shows the magnetic properties of the alloy of the present invention obtained by adding Sn, Sb, Be, Ce or C to the same <Fe-2.5%Nb-20%Co alloy and subjecting it to cold working and heat treatment in the same manner. This is a characteristic diagram, and as is clear from the diagram, Fe-2
．． 5%Nb-20%Co alloy with Sn and Sb
, Be, Ce, or C increases both the coercive force and the squareness, but when Sn5% or more, Sb5% or more, Be3
% or more, Ce2 coefficient or more, and C1.5 coefficient or more are not preferable because the residual magnetic flux density decreases and it becomes difficult to achieve 770K.

That is, Nb 0. 5 to 1 0. 0%, Co
The composition range of 9.5 to 5 5.0 and the balance Fe has a coercive force of 2 Oe or more and excellent magnetic properties such as squareness, and furthermore, the magnetic properties do not deteriorate even with high temperature t'JD heat. In addition to this, Ta, Cr, Mo, W, Ni,
Cu, T r t Z r + A l+ S n +
S b t B e + M n p C Addition of e and C has the effect of improving squareness characteristics and increasing coercive force, and addition of Ti, Al, Si, Ge, and V reduces deterioration of magnetic properties due to high temperature heating. It has the effect of reducing
Addition of Mn, Ti, Cr, and Ni has the effect of improving forging process.

If the alloy of the present invention requires cutting depending on the application, the alloy of the present invention may be further coated with PbO. 3% or less, P0.
3% or less, Tea. 3% or less, S0.3% or less Ca0.
3% or less, SeO. 3% or less and BN (boron nitride) 0
．． 3% or less of one or more types in total 001-0.3
By adding υ■, comfort and rigidity can be imparted without impairing the square characteristics.

[Brief explanation of the drawing]

Figure 1 shows the N content of Fe-Nb-20% Co alloy.
Characteristic curve diagrams showing the magnetic properties when the alloys of the present invention with different amounts of b were subjected to cold working at a 7 JOT rate of 95 and then heated at 650°C for 3 hours. Figure 2 shows the same <Fe-2.5 %Nb-
Figure 3 is a characteristic curve diagram showing the magnetic properties of the alloys of the present invention with different amounts of Co, which were subjected to the same cold working and heat treatment as described above.
Figure 4 is a characteristic diagram showing the magnetic properties of the alloy of the present invention subjected to similar cold working and heat treatment with the addition of Mo, W or Ni. C
Fig. 5 is a characteristic diagram showing the magnetic properties of the alloy of the present invention to which r, Cu, or Mn is added and subjected to cold working and heat treatment in the same manner.
Figure 6 is a characteristic diagram showing the magnetic properties of the alloy of the present invention added with Zr + Si, AA or Ge and similarly subjected to cold working and heat treatment.
FIG. 2 is a characteristic diagram showing the magnetic properties of an alloy of the present invention in which Sn, Sb, Be, Ce, or C is added to the alloy and subjected to cold heat treatment in the same manner.

Claims (1)

[Claims] NbO. 5-10.0%, C09.
5 to 55.04, the balance being Fe, and a small amount of impurities, and having a coercive force of 2 Oe or more. 2 NbO. 5-10.0%, Co
The main components are 9.5 to 55.0% and the balance Fe, and the subcomponents are V10.0% or less, Ta25.0% or less, Cr
15.0% or less, Mo 2 0.0% or less, W20.
0% or less, Ni 15.0% or less, CulO. 0% or less,
Ti5.0% or less, Zr5.0% or less, Si5.0% or less, AA5.0% or less, Ge5.0% or less, sn5.0
% or less, Sb5.0% or less, Be3.0% or less, Mn1
0.0% or less, Ce2. 0% or less and CI. A prismatic hysteresis magnetic alloy comprising 51% or less of one or more types in total of 0.01 to 30.0% and a small amount of impurities, and having a coercive force of 2 Oe or more. 3 NbO. 5 ~ 1 0.0%, C09
. A coercive force of 2 Oe or more is achieved by subjecting an alloy consisting of 5 to 55.0% Fe, the balance being Fe, and a small amount of impurities to cold υ loe at a processing rate of 50% or more, and then heating this at 400°C or more for 770°C. A method for manufacturing a prismatic hysteresis magnetic alloy characterized by exhibiting the following characteristics. 4 NbO. 5 ~ 1 0.0%, c09
．． 5 to 55.0% and the balance is Fe as the main component, and the secondary components are V 10.0% or less and Ta 2 5.0%.
Below, Crl 5.0% or less, Mo 2 0.0% or less, W20. O% or less, Ni15.0% or less, cu10.
0% or less, Ti5.0% or less, Si5.0% or less, AA
5.0% or less, Ge5.0% or less, sn5.0% or less,
sb 5.0% or less, Be 3.0% or less, Mn 10.0%
Below, Ce2. Cold 7JO with a processing rate of 50% or more is applied to an alloy consisting of a total of 0.01 to 30.0% of one or more types of 0% or less and 1.5% or less of C, and a small amount of impurities.
1. A method for producing a rectangular hysteresis magnetic alloy, which is characterized in that it exhibits a coercive force of 2 Oe or more by further heating it at 400°C or more.