JP2983795B2 - Method for producing Ni-Zn alloy - Google Patents
Method for producing Ni-Zn alloyInfo
- Publication number
- JP2983795B2 JP2983795B2 JP5109778A JP10977893A JP2983795B2 JP 2983795 B2 JP2983795 B2 JP 2983795B2 JP 5109778 A JP5109778 A JP 5109778A JP 10977893 A JP10977893 A JP 10977893A JP 2983795 B2 JP2983795 B2 JP 2983795B2
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- temperature
- producing
- flux
- molten metal
- 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 - Fee Related
Links
- 229910045601 alloy Inorganic materials 0.000 title claims description 46
- 239000000956 alloy Substances 0.000 title claims description 46
- 229910018605 Ni—Zn Inorganic materials 0.000 title claims description 45
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 238000002844 melting Methods 0.000 claims description 21
- 230000008018 melting Effects 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 18
- 230000004907 flux Effects 0.000 claims description 16
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 9
- 239000011780 sodium chloride Substances 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 8
- 229910001514 alkali metal chloride Inorganic materials 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- -1 alkali metal borate Chemical class 0.000 claims description 4
- 239000011701 zinc Substances 0.000 description 35
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 19
- 238000000034 method Methods 0.000 description 11
- 238000009835 boiling Methods 0.000 description 8
- 230000008020 evaporation Effects 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000155 melt Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Coating With Molten Metal (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、Ｎｉ−Ｚｎ合金の製造
方法に関する。The present invention relates to a method for producing a Ni--Zn alloy.
【０００２】[0002]
【従来技術】Ｎｉ−Ｚｎ合金を製造する方法として、 （１）金属Ｚｎと金属Ｎｉを溶解してＮｉ−Ｚｎ合金を
製造する方法。 （２）金属Ｚｎに塩化鉄等の塩を加えてＮｉ−Ｚｎ合金
を製造する方法等がある。2. Description of the Related Art As a method for producing a Ni—Zn alloy, there are the following methods: (1) A method for producing a Ni—Zn alloy by dissolving metallic Zn and metallic Ni. (2) There is a method of manufacturing a Ni—Zn alloy by adding a salt such as iron chloride to metal Zn.
【０００３】Ｎｉ−Ｚｎ合金の製造法において、２ｗｔ
％未満のＮｉ−Ｚｎ合金の融点は、約６００℃程度であ
るために、フラックスを用いることなく溶製することが
できる。しかしながら、２ｗｔ％以上のＮｉ−Ｚｎ合金
を溶製するには、Ｎｉ−Ｚｎ合金の状態図から読み取れ
るように、融点が高くなるために、高Ｎｉ−Ｚｎ合金を
溶製する際の溶解温度はＺｎの沸点を超える温度となっ
てしまうため溶製することが極めて難しい。すなわち、
Ｎｉ−Ｚｎ浴の表面温度が７５０℃を超えると、Ｚｎの
蒸発及び酸化反応が激しくなるために、着火し燃焼する
という現象を生じ、更にはＮｉ−Ｚｎ合金湯の突沸とい
う現象をも生ずることから、高Ｎｉ−Ｚｎ合金の製造は
困難とされていた。（２）の方法においてもＮｉ−Ｚｎ
合金を製造するには高温を必要とし、ニッケル塩等を用
いるためコスト高となり必ずしも良い方法ではなかっ
た。In a method for producing a Ni—Zn alloy, 2 wt.
%, The melting point of the Ni—Zn alloy is about 600 ° C., so that the alloy can be produced without using a flux. However, in order to melt the Ni-Zn alloy of 2 wt% or more, as can be seen from the phase diagram of the Ni-Zn alloy, the melting point is high. Since the temperature exceeds the boiling point of Zn, it is extremely difficult to melt. That is,
If the surface temperature of the Ni-Zn bath exceeds 750 ° C, the evaporation and oxidation reaction of Zn becomes intense, causing the phenomenon of ignition and burning, and also the phenomenon of bumping of the Ni-Zn alloy hot water. Therefore, it has been considered difficult to manufacture a high Ni—Zn alloy. Also in the method of (2), Ni-Zn
The production of an alloy requires a high temperature, and the use of a nickel salt or the like increases the cost and is not always a good method.
【０００４】一方、本発明者等は、２〜５０ｗｔ％Ｎｉ
−Ｚｎ合金を製造する方法において、７００℃以下の融
点を有する溶融塩形成剤およびＮａ2Ｂ4Ｏ7，Ｎａ2ＣＯ
3からなるフラックスを用いＮｉ−Ｚｎ合金を溶製する
ことを特徴とするＮｉ−Ｚｎ合金の製造方法を提案した
が（特願平３−２０４５６５）、この方法では、Ｎａ2
ＣＯ3を使用しているため高温になるとＣＯ2が発生しＺ
ｎが着火し燃焼する、また炉材が侵食されるという問題
点があるため、安定して２〜５０ｗｔ％Ｎｉ−Ｚｎ合金
を製造するすることができなかった。On the other hand, the present inventors have proposed that 2-50 wt% Ni
In a method for producing a Zn alloy, a molten salt forming agent having a melting point of 700 ° C. or less and Na 2 B 4 O 7 , Na 2 CO
While that smelted Ni-Zn alloy with a flux consisting of 3 was proposed a method for manufacturing a Ni-Zn alloy, wherein (Japanese Patent Application No. 3-204565), in this way, Na 2
Since CO 3 is used, CO 2 is generated at high temperatures and Z
Since there is a problem that n is ignited and burned, and the furnace material is eroded, it was not possible to stably produce a 2 to 50 wt% Ni-Zn alloy.
【０００５】[0005]
【問題を解決するための手段】本発明は、上記の問題点
を解決したもので、本発明の目的は、２〜５０ｗｔ％Ｎ
ｉ−Ｚｎ合金の製造方法を提供することにある。Means for Solving the Problems The present invention has solved the above problems, and an object of the present invention is to provide 2 to 50 wt% N
An object of the present invention is to provide a method for manufacturing an i-Zn alloy.
【０００６】[0006]
【発明の構成】すなわち、本発明は、 （１）２〜５０ｗｔ％Ｎｉ−Ｚｎ合金を製造する方法に
おいて、７５０℃以下の融点を有するアルカリ金属塩化
物とアルカリ金属ホウ酸塩からなる溶融塩形成剤をフラ
ックスとして用いＮｉ−Ｚｎ合金を溶製することを特徴
とするＮｉ−Ｚｎ合金の製造方法。 （２）溶融塩形成剤が、１０〜４０ｗｔ％ＮａＣｌ残
部ＫＣｌからなるアルカリ金属塩化物１０〜４０ｗｔ％
と残部Ｎａ2Ｂ4Ｏ7からなることを特徴とする前記
（１）記載のＮｉ−Ｚｎ合金の製造方法。 を提供する。According to the present invention, there is provided (1) a method for producing a 2 to 50 wt% Ni-Zn alloy, comprising the steps of: forming a molten salt comprising an alkali metal chloride and an alkali metal borate having a melting point of 750 ° C. or less. A method for producing a Ni-Zn alloy, comprising melting a Ni-Zn alloy using an agent as a flux. (2) The molten salt-forming agent is 10 to 40 wt% of an alkali metal chloride composed of 10 to 40 wt% of NaCl balance KCl.
Production method of the (1) Ni-Zn alloy, wherein the balance consisting of Na 2 B 4 O 7 and. I will provide a.
【０００７】[0007]
【発明の具体的説明】本発明の理解を容易とするため
に、具体的かつ詳細に説明する。本発明の第１の特徴
は、高温下で２〜５０ｗｔ％Ｎｉ−Ｚｎ合金、好ましく
は５〜２０ｗｔ％Ｎｉ−Ｚｎ合金を製造する際に、Ｎｉ
−Ｚｎ合金湯表面の酸化及び亜鉛の蒸発と、溶湯の燃焼
を防止するフラックス組成と溶湯の突沸を防止する溶解
方法を見い出したことにある。DETAILED DESCRIPTION OF THE INVENTION In order to facilitate understanding of the present invention, a specific and detailed description will be given. A first feature of the present invention is that when producing a 2 to 50 wt% Ni-Zn alloy at a high temperature, preferably a 5 to 20 wt% Ni-Zn alloy,
-It is to find out a flux composition for preventing oxidation and zinc evaporation of the surface of the Zn alloy molten metal and combustion of the molten metal and a melting method for preventing bumping of the molten metal.
【０００８】本発明で用いるフラックスは、７５０℃以
下、好ましくは７００℃以下の融点を有するアルカリ金
属塩化物とアルカリ金属ホウ酸塩からなる溶融塩形成剤
を用いることを特徴とする。融点が７５０℃を超える
と、Ｚｎを溶解する場合、Ｚｎの蒸発及び酸化反応が激
しくなり、着火・燃焼という現象が生じるので好ましく
ない。フラックスの組成は、７５０℃以下の融点のもの
であれば、混合比率は特に限定されないが、高Ｎｉ−Ｚ
ｎ合金を製造するためには、１３００℃においても分解
しないものが好ましい。[0008] The flux used in the present invention is characterized by using a molten salt forming agent comprising an alkali metal chloride and an alkali metal borate having a melting point of 750 ° C or less, preferably 700 ° C or less. When the melting point exceeds 750 ° C., when Zn is dissolved, the evaporation and oxidation reaction of Zn becomes violent, and the phenomenon of ignition and combustion occurs, which is not preferable. As long as the composition of the flux has a melting point of 750 ° C. or less, the mixing ratio is not particularly limited.
In order to produce an n-alloy, one that does not decompose even at 1300 ° C. is preferable.
【０００９】アルカリ金属塩化物としては、ＮａＣｌ、
ＫＣｌ等、アルカリ金属ホウ酸塩としてはＮａ2Ｂ
4Ｏ7、Ｋ2Ｂ4Ｏ7等が例示される。そしてこれらの中で
特に、１０〜４０ｗｔ％ＮａＣｌ残部ＫＣｌからなる
アルカリ金属塩化物１０〜４０ｗｔ％と残部Ｎａ2Ｂ4
Ｏ7からなるものが好ましい。As the alkali metal chloride, NaCl,
Na 2 B as an alkali metal borate such as KCl
4 O 7 and K 2 B 4 O 7 are exemplified. Among these, in particular, 10 to 40 wt% of an alkali metal chloride composed of 10 to 40 wt% of NaCl and the balance of NaCl and Na 2 B 4 for the remainder
Those consisting of O 7 are preferred.
【００１０】この溶融塩は、融点が約６５０℃でかつ約
１３００℃程度まで、溶湯表面を安定に被覆し、しかも
蒸気圧が低いので損耗することもなく、また炉材等を侵
食することもない。この結果、本発明によるフラックス
を使用することにより、高温下で、酸化されたＺｎ，Ｎ
ｉの酸化物を吸収しながら、溶湯表面からのＺｎの蒸発
を抑制し、かつ空気との接触が遮蔽されるために溶湯の
発火燃焼が生じることがなく、安定して高温下で２〜５
０ｗｔ％Ｎｉ−Ｚｎ合金を製造することができる。The molten salt has a melting point of about 650 ° C. and a temperature of about 1300 ° C., stably coats the surface of the molten metal, and has a low vapor pressure, so that it does not wear out and does not corrode furnace materials. Absent. As a result, by using the flux according to the present invention, the oxidized Zn, N
While absorbing the oxide of i, the evaporation of Zn from the surface of the molten metal is suppressed, and the contact with the air is shielded.
A 0 wt% Ni-Zn alloy can be manufactured.
【００１１】なお、Ｎｉが２ｗｔ％未満の場合は、融点
が低く他の方法でも簡便に行うことができる。一方、Ｎ
ｉが５０ｗｔ％を超える場合は、あまりに融点が高くな
るため、安定して溶製することができず、好ましくな
い。When the content of Ni is less than 2 wt%, the melting point is low and it can be easily carried out by other methods. On the other hand, N
If i exceeds 50% by weight, the melting point becomes too high, so that it is not possible to stably produce the melt, which is not preferable.
【００１２】本発明によるＮｉ−Ｚｎ合金の溶製方法の
特徴について述べる。Ｎｉ−Ｚｎ合金を溶製する場合
は、Ｚｎ浴中にＮｉを添加して、所定のＮｉ品位とする
が、徐々にＺｎ浴中のＮｉ品位を高めることが望まし
く、そのＺｎ浴中のＮｉ品位に対応して溶製温度を高め
るような溶解方法が好ましい方法である。その理由は、
所定量の全量を一時にＺｎ浴中に添加した場合、Ｎｉの
全量を溶解させるためには、Ｚｎの沸点（９０７℃）以
上の温度にする必要があるため、Ｎｉと合金化していな
いＺｎが突沸し、フラックスの被覆が破れて、着火、燃
焼するからである。The features of the method for producing a Ni—Zn alloy according to the present invention will be described. When the Ni-Zn alloy is melted, Ni is added to the Zn bath to obtain a predetermined Ni grade. However, it is desirable to gradually increase the Ni grade in the Zn bath. The melting method in which the melting temperature is increased corresponding to the above is a preferable method. The reason is,
When a predetermined amount of the total amount is added to the Zn bath at a time, the temperature must be equal to or higher than the boiling point of Zn (907 ° C.) in order to dissolve the entire amount of Ni. This is because bumping occurs, the coating of the flux is broken, and ignition and burning occur.
【００１３】前述のように、徐々にＺｎ浴中のＮｉ品位
を高めながら、そのＺｎ浴中のＮｉ品位に対応して、溶
製温度を高める方法を採用することによって、Ｚｎの活
量を低下させ、沸点を上昇させることにより、溶湯の突
沸を抑え、しかもＺｎの沸点を超える約１３００℃程度
まで溶製温度を高めることができる。As described above, while gradually increasing the Ni grade in the Zn bath, the method of raising the melting temperature in accordance with the Ni grade in the Zn bath reduces the activity of Zn. By raising the boiling point, bumping of the molten metal can be suppressed, and the melting temperature can be raised to about 1300 ° C., which exceeds the boiling point of Zn.
【００１４】このようにして溶製した２〜５０ｗｔ％Ｎ
ｉ−Ｚｎ合金は鋳型に鋳込んで鋳造することができる。
また水中等に滴下して任意の粒径とすることもできる。
アトマイズ処理で粉末とすることもできる。１０ｗｔ％
Ｎｉ品位以上のＮｉ−Ｚｎ合金は粉砕して、粉末とする
こともできるものである。The thus melted 2 to 50 wt% N
The i-Zn alloy can be cast into a mold.
Also, it can be dropped into water or the like to have an arbitrary particle size.
It can be made into a powder by an atomizing treatment. 10wt%
Ni-Zn alloys of Ni grade or higher can be pulverized into powder.
【００１５】[0015]
【実施例】以下、本発明の実施例について説明する。Embodiments of the present invention will be described below.
【００１６】[0016]
【実施例１】先ずＺｎを７００ｇ秤取して、黒鉛ルツボ
に入れ、加熱溶解した。Ｚｎ浴の温度が４５０℃程度と
なった時点で、ＮａＣｌ（１３．３ｇ），ＫＣｌ（１
６．７ｇ），Ｎａ2Ｂ4Ｏ7（７０ｇ）を乳鉢で混合した
フラックス１００ｇを溶湯表面に散布した。次に、溶湯
温度を上昇させると、約６５０℃で混合塩が溶融して、
溶湯表面を覆った。Example 1 First, 700 g of Zn was weighed, placed in a graphite crucible, and dissolved by heating. When the temperature of the Zn bath reached about 450 ° C., NaCl (13.3 g) and KCl (1
6.7 g) and Na 2 B 4 O 7 (70 g) were mixed in a mortar and 100 g of a flux was sprayed on the surface of the molten metal. Next, when the temperature of the molten metal is raised, the mixed salt is melted at about 650 ° C.
Covered the melt surface.
【００１７】Ｎｉ−Ｚｎ合金の溶製方法としては、まず
溶湯温度が７００℃となった時点でＮｉショットを５０
ｇ加えて、全量溶解させて約６．７ｗｔ％Ｎｉ−Ｚｎ合
金とし、更に溶湯温度を８５０℃としてから、再びＮｉ
ショットを５０ｇ加えて全量を溶解させて約１２．５ｗ
ｔ％Ｎｉ−Ｚｎとした。この様に、所定のＮｉ−Ｚｎ合
金の融点よりも５０〜１００℃溶湯温度を高めながら、
Ｎｉショットを添加して、溶湯温度をＺｎの沸点を超え
る１１００℃まで加熱して、最終的に合計３００ｇのＮ
ｉの全量を溶解して、約３０ｗｔ％Ｎｉ−Ｚｎの合金を
溶製した。尚、ＮａＣｌ、ＫＣｌ及びＮａ2Ｂ4Ｏ7から
なる混合溶融塩は、若干のＺｎＯ，ＮｉＯを吸収して溶
湯表面を覆い、Ｚｎロス及びＺｎ蒸気の燃焼等は認めら
れなかった。As a method for melting a Ni—Zn alloy, first, when the temperature of the molten metal reaches 700 ° C., the Ni shot is reduced by 50%.
g, and the whole amount is melted to form an approximately 6.7 wt% Ni-Zn alloy.
Add 50g of shot and dissolve the whole amount to about 12.5w
t% Ni-Zn. Thus, while raising the temperature of the molten metal by 50 to 100 ° C. above the melting point of the predetermined Ni—Zn alloy,
Ni shot was added and the melt temperature was heated to 1100 ° C. above the boiling point of Zn, resulting in a total of 300 g of N
The total amount of i was melted to produce an alloy of about 30 wt% Ni-Zn. The mixed molten salt composed of NaCl, KCl and Na 2 B 4 O 7 absorbed a small amount of ZnO and NiO and covered the surface of the molten metal, and no burning of Zn loss and Zn vapor was observed.
【００１８】このようにして溶製した約３０ｗｔ％Ｎｉ
−Ｚｎ合金を鋳型に鋳込むと鋳型と同一形状の鋳造品が
得られた。また溶製した約３０ｗｔ％Ｎｉ−Ｚｎ合金を
水中に滴下すると、任意粒径の球状のショットが得られ
た。一方、鋳造品を、振動ミルで粉砕すると３２５メッ
シュ（４３μｍ）以下の粒径の粉砕品が得られた。な
お、鋳造品のＮｉ品位は２９．９％、残部Ｚｎであっ
た。Approximately 30 wt% Ni thus melted
When the Zn alloy was cast into the mold, a cast having the same shape as the mold was obtained. When about 30 wt% Ni-Zn alloy was dropped into water, a spherical shot having an arbitrary particle size was obtained. On the other hand, when the cast product was pulverized with a vibration mill, a pulverized product having a particle size of 325 mesh (43 μm) or less was obtained. The Ni quality of the cast product was 29.9%, with the balance being Zn.
【００１９】[0019]
【実施例２】実施例１と同じように、溶湯温度を高めな
がら、最終的に溶湯温度をＺｎの沸点以上の９５０℃と
して、７００ｇのＺｎに、Ｎｉを１００ｇ溶解させて約
１２．５ｗｔ％Ｎｉ−Ｚｎ合金を溶製した。Example 2 As in Example 1, while increasing the temperature of the molten metal, the temperature of the molten metal was finally raised to 950 ° C., which is higher than the boiling point of Zn, and 100 g of Ni was dissolved in 700 g of Zn to about 12.5 wt%. A Ni-Zn alloy was melted.
【００２０】上記の約１２．５ｗｔ％Ｎｉ−Ｚｎ合金
も、鋳型の形状通りに鋳造が出きる。また、水中に滴下
すれば任意粒径のショットができるし、また粉砕すれば
３２５メッシュ（４３μｍ）以下の粒径とすることがで
きた。鋳造品のＮｉ品位は１２．８％、残部Ｚｎであっ
た。The above 12.5 wt% Ni-Zn alloy can be cast according to the shape of the mold. When dropped into water, a shot having an arbitrary particle size was formed, and when crushed, a particle size of 325 mesh (43 μm) or less was obtained. The Ni grade of the casting was 12.8%, with the balance being Zn.
【００２１】[0021]
【実施例３】実施例１と同様に溶湯温度を高めながら、
Ｚｎの沸点の直下の８５０℃とすることによって、９５
０ｇのＺｎに、Ｎｉを５０ｇ溶解させて、約５ｗｔ％Ｎ
ｉ−Ｚｎ合金を溶製した。Ｎｉ品位は４．９％、残部Ｚ
ｎであった。４．９ｗｔ％Ｎｉ−Ｚｎ合金も鋳型に鋳造
ができる。そして水中に滴下すれば任意の粒径のショッ
トとすることができる。Embodiment 3 While increasing the temperature of the molten metal in the same manner as in Embodiment 1,
By setting the temperature to 850 ° C. just below the boiling point of Zn, 95
50 g of Ni is dissolved in 0 g of Zn, and about 5 wt% N
An i-Zn alloy was melted. Ni grade is 4.9%, balance Z
n. A 4.9 wt% Ni-Zn alloy can also be cast into a mold. When dropped into water, a shot having an arbitrary particle size can be obtained.
【００２２】[0022]
【実施例４】実施例１〜３で溶製したＮｉ−Ｚｎ合金
は、通常のＺｎと同様にアトマイズ処理することによっ
て３２５メッシュ（４３μｍ）以下の粒径とすることが
できた。Embodiment 4 The Ni—Zn alloys produced in Examples 1 to 3 could be reduced in size to 325 mesh (43 μm) or less by atomizing in the same manner as ordinary Zn.
【００２３】[0023]
【比較例１】フラックスを用いずに４ｗｔ％Ｎｉ−Ｚｎ
合金を溶製しようとして、溶湯温度を４ｗｔ％Ｎｉ−Ｚ
ｎ合金の融点（約７００℃）よりも１００℃程度上昇さ
せようとしたところ、６００℃程度から溶湯表面のＺｎ
が酸化しはじめ、７５０℃を超えるとＺｎの蒸発が活発
となり、着火してＺｎが激しく燃焼したために、４ｗｔ
％Ｎｉ−Ｚｎ合金を溶製することができなかった。[Comparative Example 1] 4 wt% Ni-Zn without using flux
In order to melt the alloy, the temperature of the molten metal was set to 4 wt% Ni-Z.
When trying to raise the melting point (about 700 ° C.) of the n alloy by about 100 ° C., the Zn
Begins to oxidize, and when the temperature exceeds 750 ° C., the evaporation of Zn becomes active.
% Ni-Zn alloy could not be melted.
【００２４】[0024]
【比較例２】ＫＣｌとＮａＣｌを夫々５０ｇ秤取して、
乳鉢で混合してフラックスとした。４ｗｔ％Ｎｉ−Ｚｎ
合金を溶製しようとして、溶湯温度が４５０℃の時点で
フラックスを１００ｇ、溶湯表面に散布した。６５０℃
程度でフラックスは溶融して、溶湯表面を覆った。更に
昇温して８００℃程度になると、このフラックスは、１
部酸化されたＺｎ，Ｎｉを吸収する働きがないために、
溶体に固体のＺｎＯ，ＮｉＯが混在する状況となり、溶
体として溶湯表面を被覆する機能が阻害され、結果とし
てＺｎの蒸発が活発となり、着火してＺｎが激しく燃焼
した。この様に、ＮａＣｌ及びＫＣｌのフラックスで
は、このような現象が生じるために４ｗｔ％Ｎｉ−Ｚｎ
合金の溶製ができなかった。Comparative Example 2 50 g of KCl and NaCl were weighed, respectively.
The mixture was mixed in a mortar to obtain a flux. 4wt% Ni-Zn
In an attempt to melt the alloy, when the temperature of the molten metal was 450 ° C., 100 g of the flux was sprayed on the surface of the molten metal. 650 ° C
The flux melted to the extent and covered the surface of the molten metal. When the temperature is further raised to about 800 ° C., the flux becomes 1
Since there is no function to absorb partially oxidized Zn and Ni,
Solid ZnO and NiO were mixed in the solution, and the function of coating the surface of the molten metal as the solution was hindered. As a result, the evaporation of Zn became active, causing ignition and burning of Zn intensely. Thus, in the flux of NaCl and KCl, since such a phenomenon occurs, 4 wt% Ni—Zn
The alloy could not be melted.
【００２５】[0025]
（１）高品位２〜５０ｗｔ％Ｎｉ−Ｚｎ合金の溶製が極
めて効率的に行うことができる。 （２）溶製温度がＺｎの沸点以上の温度となっても、突
沸もなく高品位Ｎｉ−Ｚｎ合金の溶製ができる。(1) High-quality 2 to 50 wt% Ni-Zn alloy can be extremely efficiently produced. (2) Even when the melting temperature is equal to or higher than the boiling point of Zn, a high-quality Ni-Zn alloy can be melted without bumping.
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C22C 1/02 503 C22C 18/00 Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) C22C 1/02 503 C22C 18/00
Claims (3)
て、 ７５０℃以下の融点を有するアルカリ金属塩化物とアル
カリ金属ホウ酸塩からなる溶融塩形成剤をフラックスと
して、 ２〜５０ｗｔ％Ｎｉ−Ｚｎ合金を溶製することを特徴と
するＮｉ−Ｚｎ合金の製造方法。1. A method for producing a Ni—Zn alloy, comprising: using a molten salt forming agent consisting of an alkali metal chloride and an alkali metal borate having a melting point of 750 ° C. or less as a flux, wherein a 2-50 wt% Ni—Zn alloy is used. And producing a Ni—Zn alloy.
カリ金属塩化物を１０〜４０ｗｔ％と、 残部Ｎａ2 Ｂ4 Ｏ7 からなることを特徴とするＮｉ−
Ｚｎ合金の製造方法。2. The molten salt-forming agent according to claim 1, comprising 10 to 40% by weight of an alkali metal chloride comprising 10 to 40% by weight of NaCl and the balance of KCl, and Na 2 B 4 O 7 for the remainder. Ni-
Manufacturing method of Zn alloy.
を製造する方法が、 Ｚｎ浴中にＮｉを徐々に添加し、浴中のＮｉ濃度に対応
して溶湯温度を徐々に高くすることを特徴とするＮｉ−
Ｚｎ合金の製造方法。3. The method for producing a Ni—Zn alloy according to claim 1, wherein Ni is gradually added to the Zn bath, and the temperature of the molten metal is gradually increased in accordance with the Ni concentration in the bath. Ni-
Manufacturing method of Zn alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5109778A JP2983795B2 (en) | 1993-04-14 | 1993-04-14 | Method for producing Ni-Zn alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5109778A JP2983795B2 (en) | 1993-04-14 | 1993-04-14 | Method for producing Ni-Zn alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06299268A JPH06299268A (en) | 1994-10-25 |
| JP2983795B2 true JP2983795B2 (en) | 1999-11-29 |
Family
ID=14518994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5109778A Expired - Fee Related JP2983795B2 (en) | 1993-04-14 | 1993-04-14 | Method for producing Ni-Zn alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2983795B2 (en) |
-
1993
- 1993-04-14 JP JP5109778A patent/JP2983795B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06299268A (en) | 1994-10-25 |
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