JPS63264299A - Production of baking type flux for submerged arc welding - Google Patents
Production of baking type flux for submerged arc weldingInfo
- Publication number
- JPS63264299A JPS63264299A JP10057387A JP10057387A JPS63264299A JP S63264299 A JPS63264299 A JP S63264299A JP 10057387 A JP10057387 A JP 10057387A JP 10057387 A JP10057387 A JP 10057387A JP S63264299 A JPS63264299 A JP S63264299A
- Authority
- JP
- Japan
- Prior art keywords
- flux
- parts
- arc welding
- submerged arc
- powder
- 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.)
- Pending
Links
- 230000004907 flux Effects 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000003466 welding Methods 0.000 title claims description 11
- 239000000843 powder Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000005469 granulation Methods 0.000 claims abstract description 9
- 230000003179 granulation Effects 0.000 claims abstract description 9
- 239000011230 binding agent Substances 0.000 claims description 18
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 238000010304 firing Methods 0.000 claims description 3
- 150000004760 silicates Chemical class 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 15
- 239000010419 fine particle Substances 0.000 abstract description 10
- -1 alkali salt silicate Chemical class 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract 5
- 239000011362 coarse particle Substances 0.000 description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 11
- 235000019353 potassium silicate Nutrition 0.000 description 10
- 239000004575 stone Substances 0.000 description 7
- 239000008187 granular material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 229910052911 sodium silicate Inorganic materials 0.000 description 4
- 239000004111 Potassium silicate Substances 0.000 description 3
- 229910052913 potassium silicate Inorganic materials 0.000 description 3
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 229910052912 lithium silicate Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、サブマージアーク溶接用焼成形フラックスの
製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing a sintered flux for submerged arc welding.
［従来の技術］
サブマージアーク溶接用フランクスは、溶融形フラック
スと焼成形フラックスに大別されるが、焼成形フラック
スは、粉状原料に粘結剤（水ガラス：ケイ酸ナトリウム
水溶液、ケイ酸カリウム水溶液あるいはこの両方の混合
物の液体）を添加し、混練し、キルンなどを使用して造
粒および焼成を行りたものを冷却、整粒して製品として
いる６例えば特開昭５８−１１９４９１号公報にその整
粒方法が提案されている。[Prior art] Flanks for submerged arc welding are roughly divided into molten flux and sintered flux. Sintered flux uses powdered raw materials and a binder (water glass: sodium silicate aqueous solution, potassium silicate). An aqueous solution or a liquid mixture of both) is added, kneaded, granulated and fired using a kiln, etc., and then cooled and sized to produce a product6. For example, JP-A No. 58-119491 A method for sizing is proposed in the official gazette.
すなわち、従来焼成形フラックスは、天然の炭酸塩、酸
化物などの粉体を混合し、粘結剤として水ガラスを添加
し、混練し、焼成したものである。That is, conventional sintered flux is made by mixing powders of natural carbonates, oxides, etc., adding water glass as a binder, kneading, and sintering.
上記造粒装置には、例えば羽根形ミキサが用いられ、こ
れは回転する１〜２枚の羽根があり、装入される上記混
合物を浮かして攪拌、造粒する。For example, a vane-type mixer is used in the granulation device, which has one or two rotating blades, and floats the charged mixture, stirs it, and granulates it.
この造粒で所望粒径範囲の粒体ができるが、水ガラス混
合体であるから粒体相互が固若しやすく、固着して塊状
となる（ブロッキングという）。すなわち所望粒径範囲
を越えるため、圧潰して粒体化する（解砕という）必要
が生じる。しかしながら、解砕すると粒径範囲の下限を
下回る微粒子が発生し、このような微粒子は製品フラッ
クスとなりえず、製品歩留りの低下を招く。This granulation produces granules with a desired particle size range, but since it is a water glass mixture, the granules tend to stick to each other and form lumps (referred to as blocking). In other words, since the particle size exceeds the desired particle size range, it is necessary to crush the particles into granules (referred to as crushing). However, when crushed, fine particles below the lower limit of the particle size range are generated, and such fine particles cannot be used as a product flux, leading to a decrease in product yield.
また焼成形フラックスは、金属粉末を混入することによ
り、アークの安定性を良くするフラックスの消費量が少
ないなどの特性改善を図れる点が溶融形にはない利点で
あるが、解砕すると、金属粉末が微粉となって出てしま
い、いわゆる成分の偏析又は成分比の変化を起こしてし
まい前記の特性改善を妨げるという問題がある。Furthermore, sintered flux has the advantage that molten flux does not have, in that by mixing metal powder, it can improve properties such as low consumption of flux, which improves arc stability. There is a problem that the powder comes out in the form of fine powder, causing so-called component segregation or a change in the component ratio, which impedes the above-mentioned property improvement.
したがって、ブロッキングが発生しないようにするのが
最も望まれる所であるが、従来の未乾燥水ガラス混合体
では、簡単に粒体相互が固着、ブロッキングが発生する
傾向がある。Therefore, it is most desirable to prevent blocking from occurring, but in conventional undried water glass mixtures, particles tend to easily stick to each other and blocking occurs.
すなわち、従来の焼成形フラックスの製造工程において
は、上記のようなブロッキングによる粗粒を粉砕、整粒
しているが、粉砕のための工数が増加すると共に、過粉
砕され微細粒化した粒体は製品フラックスとならず、そ
の結果製品歩留りが低下、製造コストの上昇の原因とな
っている。In other words, in the conventional manufacturing process of sintered flux, the coarse particles are crushed and sized by blocking as described above, but the number of steps for crushing increases, and the granules are over-pulverized and finely sized. does not become a product flux, resulting in a decrease in product yield and an increase in manufacturing costs.
前記の粗粒の発生を防ぐ製造方法については、種々研究
がなされ、例えば特開昭５９−１６９６９９号公報によ
り提案がなされている。Various studies have been conducted on manufacturing methods for preventing the generation of coarse particles, and a proposal has been made, for example, in JP-A-59-169699.
これはフラックス原料粉に水ガラスを混入し、造粒した
直後に炭酸ガスを供給して反応させ粒体相互の粘着性を
失わせることによって、粗粒の発生防止を図ったもので
あり、原理的には、この方法による効果は十分期待でき
るものであるが、炭酸ガスを供給するために新たな設備
が必要であり、かつ工程も増えコストアップとなること
、ツーラックス原料に対し適正な炭酸ガス量を安定に供
給して、常に一定の品質を得るための制御手段が複雑で
ある等の問題もあり、より簡便に粗粒の発生を防止する
製造方法が強く望まれていた。This is a method that prevents the generation of coarse particles by mixing water glass into the flux raw material powder and supplying carbon dioxide gas immediately after granulation to cause the particles to react and lose their mutual adhesion. In general, this method can be expected to be quite effective, but it requires new equipment to supply carbon dioxide gas, increases the number of steps, and increases costs. There are also problems such as the complicated control means for supplying a stable amount of gas and always obtaining constant quality, and there has been a strong desire for a manufacturing method that can more easily prevent the generation of coarse particles.
［発明が解決しようとする問題点］
本発明は、以上のような従来技術の問題点を解決し、サ
ブマージアーク溶接用焼成形フラックスの製造方法にお
いて、粗粒の発生をなくし、製造歩留りを向上させる目
的でなされたものである。[Problems to be Solved by the Invention] The present invention solves the problems of the prior art as described above, eliminates the generation of coarse particles, and improves the manufacturing yield in a method for manufacturing sintered flux for submerged arc welding. This was done for the purpose of
［問題点を解決するための手段］
本発明は、サブマージアーク溶接用焼成形フラックスを
製造するにあたり、粘結剤とフラックス原料粉の混合物
を造粒、焼成する工程において、粘結剤としてモル比２
．０以下のケイ酸アルカリ石粉を使用し、造粒前に水を
添加するところに要旨が存在する。[Means for Solving the Problems] The present invention provides a method for producing a sintered flux for submerged arc welding, in which the molar ratio of the binder is adjusted in the step of granulating and firing a mixture of a binder and flux raw material powder. 2
．． The gist lies in the use of alkali silicate stone powder of 0 or less and the addition of water before granulation.
［作用］
本発明者等は前記目的をより簡便な方法で達成すべく種
々検討を重ねた結果、モル比２．０以下のケイ酸アルカ
リ石粉を粘結剤として用い、さらに水を添加することに
より微細粒の発生を増加させないで粗粒の発生を大幅に
減することができるとの知見を得て本発明を完成した。[Function] As a result of various studies in order to achieve the above object in a simpler manner, the inventors of the present invention have found that alkali silicate stone powder with a molar ratio of 2.0 or less is used as a binder, and water is further added. The present invention was completed based on the finding that the generation of coarse particles can be significantly reduced without increasing the generation of fine particles.
以下に本発明の構成要件の限定理由およびその作用を説
明する。The reasons for limiting the constituent elements of the present invention and their effects will be explained below.
本発明においては、ケイ酸アルカリ石粉を粘結剤として
使用する必要がある。すなわち、粗粒の発生を少なくす
るためである。In the present invention, it is necessary to use alkali silicate stone powder as a binder. That is, this is to reduce the generation of coarse particles.
また本発明においてはケイ酸アルカリ石粉のモル比を２
．０以下とする必要がある。すなわち、モ”ル比が２．
０を越えるとフラックス原料粉が造粒しにくくなり、製
品として必要な粒径範囲の下限未溝の微粒子が多くなり
、やはり製品歩留りが蚕下してしまう。In addition, in the present invention, the molar ratio of alkali silicate stone powder is 2.
．． It needs to be 0 or less. That is, the molar ratio is 2.
If it exceeds 0, it will become difficult to granulate the flux raw material powder, and there will be a large number of fine particles that are not at the lower limit of the particle size range required for the product, resulting in a decrease in product yield.
本発明においては、ケイ酸アルカリ塩とは具体的にば、
従来サブマージアーク溶接用焼成形フラックスの製造方
法において通常用いられている水ガラスと同様のもので
あればよい。In the present invention, the alkali silicate salt specifically includes:
Any material similar to water glass that is commonly used in the conventional method for producing sintered flux for submerged arc welding may be used.
例えば、ケイ酸ナトリウム、ケイ酸カリウム、ケイ酸リ
チウム等が好適である。For example, sodium silicate, potassium silicate, lithium silicate, etc. are suitable.
また、本発明において前記したモル比とは、５ｉ０２と
アルカリ成分とのモル比を意味する。Moreover, the molar ratio described above in the present invention means the molar ratio of 5i02 and the alkaline component.
すなわち、粘結剤としてケイ酸ソーダを用いた場合は、
（粘結剤中の５ｉ０２のモル分率）／（粘結剤中のＮａ
２Ｏのモル分率）を２．０以下とする必要がある。In other words, when using sodium silicate as a binder,
(Mole fraction of 5i02 in binder)/(Na in binder)
The molar fraction of 2O) needs to be 2.0 or less.
ケイ酸ソーダとケイ酸カリの混合物を用いる場合は、（
粘結剤中の５ｉ０２のモル分率）／（粘結剤中のＮａ２
Ｏのモル分率＋粘結剤中のに、Ｏのモル分率）を２，０
以下とする必要がある。When using a mixture of sodium silicate and potassium silicate, (
Molar fraction of 5i02 in binder)/(Na2 in binder
Mole fraction of O + mole fraction of O in the binder) is 2.0
It is necessary to do the following.
本発明においては、モル比２．０以下のケイ酸アルカリ
粉を粉状原料と混合した後、水を添加し、さらに、混練
することにより、製品として必要な粒径範囲の下限値を
下回る微粒子の発生をさらに少なくすることかできる。In the present invention, after mixing alkali silicate powder with a molar ratio of 2.0 or less with powdered raw materials, adding water and further kneading, fine particles with a particle size below the lower limit of the particle size range required as a product are produced. It is possible to further reduce the occurrence of
なお、本発明においては、ケイ酸アルカリ石粉の混入量
は重量比でフラックス原料粉１００に対し、５〜１５が
好適である。In the present invention, the amount of alkali silicate stone powder to be mixed is preferably 5 to 15 per 100 parts of the flux raw material powder in terms of weight ratio.
また、本発明においては水を添加することにより適当な
造粒能力を得ることができ、その添加量は、重量比で粘
結剤１００に対して水８０〜２００が好適である。Further, in the present invention, a suitable granulation ability can be obtained by adding water, and the amount added is preferably 80 to 200 parts by weight of water to 100 parts of the binder.
［実施例］ 以下に本発明の実施例について詳細に説明する。[Example] Examples of the present invention will be described in detail below.
第１表に示す組成のフラックス原料粉に、第２表に示す
試験条件でケイ酸アルカリ石粉を導入し、常法に従い造
粒、焼成して焼成形スラックスを得た。Alkali silicate stone powder was introduced into the flux raw material powder having the composition shown in Table 1 under the test conditions shown in Table 2, and granulated and fired according to a conventional method to obtain a fired slack.
なお、焼成温度は、４５０℃とした。Note that the firing temperature was 450°C.
第３表は、上記方法により得られた焼成フラックスの粒
度分布の調査結果である。Table 3 shows the investigation results of the particle size distribution of the fired flux obtained by the above method.
第３表に示すごとく、Ｎｏ、１〜Ｎｏ、９は、本発明の
実施例であり、１０メツシユを越える粗粒および４８メ
ツシユより細かい微粒子が少なく製品フラックスとする
効率が良く、すなわち製品歩留りが良好である。As shown in Table 3, No. 1 to No. 9 are examples of the present invention, and there are fewer coarse particles of more than 10 meshes and fine particles of finer than 48 meshes, and the efficiency of making the product flux is high, that is, the product yield is high. In good condition.
特に、Ｎｏ、１．Ｎｏ、３．Ｎｏ、６．Ｎｏ。In particular, No. 1. No, 3. No, 6. No.
７、Ｎｏ、８．Ｎｏ、９はケイ酸アルカリ石粉の混入量
は、重量比でフラックス原料粉１００に対し５〜１５の
範囲−内であり、添加する水の量が重量比で粘結剤１０
０に対して８０〜２００の範囲内であり、粗粒および微
粒子の発生がさらに少なく、製品歩留りが良好である。7, No, 8. In No. 9, the amount of alkali silicate stone powder mixed is within the range of 5 to 15 to 100 parts of the flux raw material powder, and the amount of water added is 10 to 10 parts of the binder by weight ratio.
It is within the range of 80 to 200 with respect to 0, the generation of coarse particles and fine particles is further reduced, and the product yield is good.
第３表において、Ｎｏ、１０は比較例であり、水を添加
していないために、微粒子の発生が多くなっており製品
歩留りが悪い。In Table 3, No. 10 is a comparative example, and since no water was added, more fine particles were generated and the product yield was poor.
また、Ｎｏ、１１．Ｎｏ、１２も比較例を示しており、
いずれもモル比が２を越えて製品歩留が悪い。Also, No. 11. No. 12 also shows a comparative example,
In either case, the molar ratio exceeds 2, resulting in poor product yield.
なお、東３表においてＮｏ、１３．Ｎｏ、１４は従来例
であり、いずれも粘結剤として水ガラスを使用している
ため、粗粒の量が多くなっており、製品歩留りが悪い。In addition, No. 13 in the East 3 table. No. 14 is a conventional example, and since both use water glass as a binder, the amount of coarse particles is large and the product yield is poor.
［発明の効果］
以上、説明したように、本発明によれば粗粒および微粒
の発生を少なくし、粒度分布の安定したフラックス粒が
得られるサブマージアーク溶接用焼成形フラックスの製
造方法を提供することができ、その結果、製品フラック
スの歩留りが格段に向上する。[Effects of the Invention] As described above, the present invention provides a method for producing sintered flux for submerged arc welding, which reduces the generation of coarse particles and fine particles and provides flux particles with a stable particle size distribution. As a result, the yield of product flux is significantly improved.
Claims (3)
するにあたり、粘結剤とフラックスの原料粉の混合物を
造粒、焼成する工程において、粘結剤としてモル比２．
０以下のケイ酸アルカリ塩粉を使用し、造粒前に水を添
加することを特徴とするサブマージアーク溶接用焼成形
フラックスの製造方法。(1) In producing a sintered flux for submerged arc welding, in the step of granulating and firing a mixture of a binder and flux raw powder, the binder is used at a molar ratio of 2.
1. A method for producing a sintered flux for submerged arc welding, characterized in that an alkali silicate salt powder with a concentration of 0 or less is used and water is added before granulation.
クス原料粉１００に対し５〜１５である特許請求の範囲
第１項に記載のサブマージアーク溶接用焼成形フラック
スの製造方法。(2) The method for producing a sintered flux for submerged arc welding according to claim 1, wherein the amount of the alkali silicate powder mixed is 5 to 15 per 100 parts of the flux raw material powder in terms of weight ratio.
て８０〜２００である特許請求の範囲第１項あるいは第
２項記載のサブマージアーク溶接用焼成形フラックスの
製造方法。(3) The method for producing a sintered flux for submerged arc welding according to claim 1 or 2, wherein the amount of water added is 80 to 200 parts by weight based on 100 parts of the binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10057387A JPS63264299A (en) | 1987-04-22 | 1987-04-22 | Production of baking type flux for submerged arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10057387A JPS63264299A (en) | 1987-04-22 | 1987-04-22 | Production of baking type flux for submerged arc welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63264299A true JPS63264299A (en) | 1988-11-01 |
Family
ID=14277643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10057387A Pending JPS63264299A (en) | 1987-04-22 | 1987-04-22 | Production of baking type flux for submerged arc welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63264299A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109454361A (en) * | 2018-11-28 | 2019-03-12 | 东莞理工学院 | A kind of low-hygroscopicity submerged-arc welding sintered flux and preparation method thereof |
-
1987
- 1987-04-22 JP JP10057387A patent/JPS63264299A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109454361A (en) * | 2018-11-28 | 2019-03-12 | 东莞理工学院 | A kind of low-hygroscopicity submerged-arc welding sintered flux and preparation method thereof |
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