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JPS50121116

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DESCRIPTION JPS50121116
Inventor Tokyo "t; Ni: Shiba 5-chome No. 33 1 1 'Nippon Electric Co., Ltd. Myogaosamu Suga
Additive Patent Applicant Shiba 5-chome No. 33 Minato-ku Tokyo Tokyo (423) NEC Corporation
I 曳Name: J-Koji Hiroki agent 〒 108 Tokyo Minato-ku 5-chome 3 $ 1. No. Nippon Electric One
company \ 0.4 [phase] Japan Patent Office ■ JPA 50-j- 2L1. L60 published Japan 50. (197!
5) 9.22 Japanese Patent Application No. 4-'I-217 '? OI [phase] application dated application 49.
(197 仝) 3. n Request for examination not yet requested (all five pages) Internal number in the
office Name of the invention Fe-Ji-Oo alloy All Ni2O, 0 to 3-5.0%, C05, 0 to 17.0 in weight ratio
%, Mo 3.0 to 15.0%, Wl, 5 to 10.0, or 4.5% or less, 8i 1.3% or less, Mn 5.0% or less, and Mo + W
of 22.0% or less Ni-0o alloy.
Claims
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a highperformance, low-variation re-Ni-Oo-based alloy used in communication devices such as tuning
forks, magnetostrictive delay lines, and mechanical filters. In telecommunications equipment in
general, 桧 elastic materials are used as vibrating materials in tuning forks, magnetostrictive
delay lines, mechanical filters, etc., and their applications are being expanded, and the mechanical
quality factor (hereinafter referred to as Qm and Describe. ) Is large, and the temperature change
of the resonance frequency (hereinafter referred to as temperature characteristic). ) Is small, the
variation of its center value is also small, and the propagation velocity of the sound wave in the
material (hereinafter referred to as the speed of sound). There is an increasing demand for elastic
materials having a small variation of 4). Even if the conventional Jlα elastic material has a
temperature of about IPPm / 'O and a Qm of about 10.000, the variation of the central value of
the temperature and the speed of sound is large. For this reason, 100% inspection and 100%
adjustment are required, and a large amount of effort is spent during mass production, which is
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expensive. A conventional vibration device for communication equipment requiring high
performance and small variation I giant elastic material etc. The use of the elastic material
presents major problems in the manufacture of the device. The present invention provides a
giant elastic material which substantially ameliorates the above-mentioned drawbacks. That is, it
has the characteristic that the variation of the sound velocity is not found at all in the
conventional material of the center value ± 0.2% (up to 3 times the standard deviation), and the
center characteristic of the temperature characteristic is 0 PPrrVO It provides a material that has
an EndPage: 1 signature of ± 1.5 PPm / ′ ′ 0 (with up to 3 times the standard deviation), and
a Qm of more than 25.000. The production method is characterized in that cold plastic working
with a reduction of area of 30 to 90% is performed after solution annealing, and annealing is
performed at 300 ° C. to 600 ° C. for 15 minutes to 8 hours. In addition, as for the chemical
component in all M weight 5.0% or less Si 1.3% or less Or 4.5% or less W 1.5 to 10.0% (W + Mo
is 22.0% or less) · Mo 3.0 to It is characterized by being composed of 15.0% Co 5.0 to 17.0% Ni
20.0 to 35.0% and the balance Fe, but still more remarkable features are very excellent where the
tolerance of the above-mentioned chemical composition and processing conditions is wide. Have
industrial value. And, the constant elasticity material in the present invention is obtained by
experiment by spending a lot of time and cost as described below. In the present invention, when
the various elastic materials having the component ratio of the component elements changed
within the allowable range are plastically processed so that the reduction ratio is 30 to 90%, the
component element ratio and the blood loss ratio By annealing at a predetermined temperature
range of 300 to 600 ° C. according to the present invention, it is possible to obtain an elastic
material having the above-mentioned characteristics with a variation in the speed of sound
within 0.2%.
The reasons for limiting the range of chemical components of the elastic material in the present
invention will be described below. Fe is a main component of the constant elasticity material in
the present invention. Ni was a first subcomponent, and co was a second subcomponent. In the
present invention, the ratio by weight of Mo3.degree. To 15.0, Wl, 5-10.0. If the amount of Ni is
increased to 35% or more while containing 4.5% or less, 811.3% or less, and 5.0% or less of Mn,
processing becomes easy, but any O. Qm> 25.000 becomes impossible even if it is a trap. Also, if
Niflit is made 20% or less at the expense of ease of processing, the center value of temperature
characteristics becomes larger on the negative side than QPP n ZO 0 regardless of any Ooi and
whatever annealing conditions are selected, and the variation is ± 1.5PPm / 'Sudden increase
from zero. Furthermore, as the most fatal defect, when the amount of Ni is in the range of 20 to
35% and the amount of 00 is out of the range of 5.0 to 17.0%, the variation in sound velocity
rapidly increases and the feature of the present invention is lost. Therefore, to obtain a giant
elastic material having the features of the present invention, Ni 20.0 to 35.0% Co5. Qm 17.0%
balance should be Fc, Or, Mn and Si of the chemical components. In the range of the above
composition, processing of a reduction in area of 30 to 90% is possible after solution annealing,
and the features of the present invention can be exhibited by the required final annealing
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according to the processing rate. Next, the reasons for limitation of Mo and W are described, and
adding 4MO and W increases the hardness of the material or suppresses the occurrence of
cracks that occur during processing, and the variation of various properties considered to be
associated with the defects. Decreased significantly. As a result, cold plastic working with a / 14
fi ratio of 30 to 90% was made possible. According to the reduction of area, the annealing
temperature at a predetermined temperature within the range of 300 "-.600 ° C, the central
value of the temperature is OPP + n / 'O and the variation is ± 1.5 P 1) I' r 110 or less In
addition, the proof of MOlW that the center value of the sound velocity is about 2890 m4 and
the variation is within ± 0.2% is Mo 3.0 to 15.0% W 1.5 to 10.0%, and the remaining part is the
above chemical It must be a component FeOoOrMn and Si, and when the Mo + W exceeds 22.0%,
cold plastic working with a reduction of area of 30% or more is not possible, and the dispersion
of characteristics rapidly increases. Next, KOr improves mechanical properties to improve Qm,
and Mn and Si improve the deterioration of processability when containing Or and promote
alloying and improve Qm. It became clear in the example described below.
However, if the content is more than 4,5% or 1.3% Si or 5.0% Mn, the cold plastic working
becomes extremely difficult, and the probability of breakage of the workpiece becomes large
EndPage: 2 Even at the annealing temperature, it is difficult to make the central value of the
temperature characteristic close to OPPry〆0, and the variation is ± 1.5PPm / '. No material
with a variation in sound velocity within ± 0.2% was obtained. Therefore, the chemical
composition range of Or, Si and Mn is limited to less than Or 4.5% and 8i 1.3% or less Mn 5.0%
or less. Next, the limitation conditions of the reduction rate will be described. Fig. 1 shows the
relative value to the velocity of sound in percentage when the reduction in area is 30% on the
vertical axis and the reduction in area of cold plastic working after solution annealing on the
horizontal axis on the same scale. The relative values of the velocity of sound measured for
various samples are plotted. As apparent from FIG. 1, it is necessary to select the reduction of
area between 30 and 90% in order to reduce the variation in the speed of sound. That is,
regardless of how carefully plastic working is performed, there is a difference in substantial
processing rate between the end and the center of the workpiece. Accordingly, the change in the
velocity of sound due to the difference in processing rate can be reduced. In addition to this, it
becomes difficult to realize Qm> 25.000 when the reduction of area is 30% or less, and when the
reduction of area is 90% or more, the workpiece is deformed during cold plastic working. The
reduction in area also needs to be limited to the above-mentioned range due to the increase in
the probability of breakage. Next, limitation conditions of the annealing temperature after cold
plastic working will be described. In FIG. 2, the vertical axis represents the relative value of each
annealing temperature to the speed of sound when the annealing temperature is 400 ° C., and
the horizontal axis represents the annealing temperature on a representative sample having the
same reduction in area. The relative value of the speed of sound is plotted. From FIG. 2, the
annealing temperature after cold plastic working is limited to 300 to 600 ° C. for the following
reason. That is, when annealing a large amount of materials, the effective annealing temperature
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of each material is necessarily different due to the temperature distribution in the furnace, and it
is impossible to achieve exactly the same annealing temperature. Therefore, even if the abovementioned change of the annealing temperature is made, it is necessary to limit to the abovementioned temperature range in order to reduce the variation of the sound velocity. In addition,
it is extremely difficult to realize Qm> 25.000 if the annealing temperature is set to 600 ° C. or
more, and if the temperature is lower than 300 ° C., the central value of the temperature
characteristic is reduced and the variation thereof is It is necessary to limit to the abovementioned annealing temperature range also by the reason which becomes very difficult to make
small.
Next, examples of the present invention will be listed and described. Table 1 shows the chemical
components of the elastic material used in the following examples. Example 1 e) An ingot having
a chemical composition ratio of 1 ° to 1 to 3 is prepared, intermediate annealing is performed if
necessary, and processed into a final specimen shape, and the cold air cutting ratio is 30 to 90%.
Solution annealing was performed before cold working so as to obtain the required reduction in
area corresponding to each chemical component ratio. Thereafter, after the final annealing, a
length having a resonance frequency of about 100 KHz was previously calculated in a first mode
of torsional vibration, and cut into the length to prepare 1000 samples. However, in the present
embodiment, as an example of the combination of the component and the processing degree and
the annealing condition, the reduction ratio of 35%, 45% and 55% for 1.2 and 3 respectively is
used in a hydrogen atmosphere of 450′O 1.5. Annealed for time. However, the temperature rise
/ fall rate was 200 ° C./hour, and the thus obtained vibrator measures the torsional resonance
frequency in the temperature range of 0 ° C. to 60 ° C. using the torsional vibration
electromagnetic drive system, Qm and speed of sound were measured at room temperature. The
results are shown in Table 2. Also, a conventional giant elasticity material was produced in the
same manner as the above-mentioned production method. It measured similarly to the said
measuring method. The number of samples is 1,000. The results are shown in A7 of Table 2. -11 (10) EndPage: 3 Example 2 4 and 5 respectively contain Mn and Or, S1 and Or, and the
temperature coefficient changed by containing Fe% Ni1Co, Mo and W, as desired. When cold
plastic working with a reduction of area of 30 to 90% is performed according to the
characteristics of the present invention, temperature characteristic is achieved by annealing at a
temperature of 300 to 600 ° Ct [in the mouth, according to each of the reduction of area. The
variation is made to have ± 1.5 PPrrV′o. The alloy with this chemical composition ratio was
subjected to cold plastic working, cutting and measurement in the same manner as in Example 1.
The number of samples is 1,000. However, in the present example, as an example, annealing was
performed for 0.5 hours in a hydrogen atmosphere at 550 ° C. using reduction rates of 60% and
50% for the samples of breath 4 and 5, respectively. The results are shown in Table 2. Further, in
the same manner as in the above-mentioned production method, a conventional) elastic material
was produced at a reduction rate of 55% and measured in the same manner as the abovementioned measurement method. The number of samples is 1,000. The results are shown in
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Table 5-5. In Example 3, the temperature coefficient changed by containing Mn, Si and Or (11)
was the same as that in Example 2 and the characteristics of the present invention were obtained.
The alloy having this chemical composition ratio was subjected to cold plastic working, cutting
and measurement in the same manner as in Example 1.
The number of samples is 1,000. However, in the present embodiment, as an example, annealing
was performed for 2 hours in a hydrogen atmosphere of 350 "0" with a reduction in area of 85%.
The results are shown in Table 2. Further, in the same manner as in the above-mentioned
production method, a conventional one-pass elastic material is made and measured in the same
manner as the above-mentioned measurement method, and the number of round samples is
1,000. The results are shown in genus 9 of Table 2. As is apparent from the above examples, the
11 negative elastic material in the present invention was subjected to cold plastic working with a
reduction of area of 30 to 90% when the component ratio of the component elements was
changed within the allowable range. For the above alloy, the variation of sound velocity is within
± 0.2% at the annealing temperature range of 300 to 600 ° C and the variation of temperature
is within ± 1.5PPm / ′ ′ C, and the variation of temperature and velocity is It has the feature
of a place that is extremely small. As a result, compared with the conventional elastic material or
Ni base alloy etc., it became possible to reduce the manufacturing cost in the case of
manufacturing various apparatuses using this material in wide range (12). Moreover, it has
extremely good properties such that Qm is 25.000 or more, and its industrial value is great.
Table 2. However, each numerical value described in the column of warmth and speed of sound
indicates the first numerical value as the central value, and the second numerical value indicates
the variation to 3 times the standard deviation. , (13)
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows the change in the speed of sound when
cold plastic working is performed by changing the surface reduction rate in the elastic material
according to the present invention, and the relative value thereof at the surface reduction rate of
30% FIG. 2 shows the annealing temperature dependency of the speed of sound of the elastic
material in the present invention. -+-塀 弁 (14) EndPage: 4
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