TWI647205B - Control material and manufacturing method of control material - Google Patents
Control material and manufacturing method of control material Download PDFInfo
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- TWI647205B TWI647205B TW106145717A TW106145717A TWI647205B TW I647205 B TWI647205 B TW I647205B TW 106145717 A TW106145717 A TW 106145717A TW 106145717 A TW106145717 A TW 106145717A TW I647205 B TWI647205 B TW I647205B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
- C21C1/105—Nodularising additive agents
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
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- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
本發明之課題在於提供：於球墨鑄鐵(ductile iron)之製造中進行石墨球狀化處理用的餵線(wire injection)法中，能控制鎂之反應，同時能輕量化之線(wire)。 本發明之解決手段為：於進行石墨球狀化處理用的餵線法中，與鎂合金一起填充於線內部者，特徵為其係包含70～75重量%的SiO 2之多孔質的火山性矽酸鹽礦物。 An object of the present invention is to provide a wire injection method for performing graphite spheroidizing treatment in the manufacture of ductile iron to control the reaction of magnesium and to reduce the weight of the wire. The solution of the present invention is: in the wire feeding method for spheroidizing graphite, the inside of the wire is filled with magnesium alloy, which is characterized by its porous volcanic nature containing 70 to 75% by weight of SiO 2 Silicate mineral.
Description
[0001] 本發明關於控制材料及該控制材料的製造方法，該控制材料係於球墨鑄鐵之製造中進行石墨球狀化處理用的餵線法中，與鎂合金一起填充於線中者。[0001] The present invention relates to a control material and a method for manufacturing the control material. The control material is a wire feeding method for performing graphite spheroidizing treatment in the production of ductile iron, and is filled with magnesium alloy in the wire.
[0002] 以往於球墨鑄鐵之製造中，作為進行石墨球狀化處理之方法的一個，有餵線法。 [0003] 餵線法係以專用的進料器，將填充有作為石墨球狀化劑的鎂合金之線投入至熔液中之方法。餵線法係可將填充有鎂合金的線投入至熔液深部。 [0004] 再者，餵線法係即使在熔渣(slag)覆蓋熔液表面時，也能使填充有鎂合金的線貫穿該熔渣而投入至熔液中。 [0005] 餵線法由於能將石墨球狀化所需要的鎂成分安定地添加至熔液中，可提高球墨鑄鐵的製造良率。 [0006] 又，餵線法由於可藉由專用進料器而自由自在地調整線的添加速度，可容易實現球墨鑄鐵品質管理、對於處理熔液量的變動之對應、鎂添加之自動化等。 [0007] 作為可藉由如此的餵線法將線投入至熔液中的裝置，有專利文獻1所示者。線中所含有的鎂由於沸點低，若與高溫的熔液接觸則有爆炸性反應。為了控制如此的鎂之爆炸性反應，將控制反應的控制材料與鎂合金一地填充於線中。 [先前技術文獻] [專利文獻] [0008] [專利文獻1]日本特開2016-16415號公報[0002] Conventionally, in the production of ductile cast iron, as a method of performing graphite spheroidizing treatment, there is a wire feeding method. [0003] The wire feeding method is a method of putting a wire of a magnesium alloy filled with graphite spheroidizing agent into a melt with a dedicated feeder. The wire feeding method can put a wire filled with a magnesium alloy into the deep part of the melt. [0004] Furthermore, even when the slag covers the surface of the molten metal, the wire feeding method can pass a wire filled with a magnesium alloy into the molten metal through the molten slag. [0005] The wire feeding method can stably add the magnesium component required for spheroidization of graphite to the melt, which can improve the manufacturing yield of nodular cast iron. [0006] In addition, the wire feeding method can freely adjust the wire addition speed by a special feeder, which can easily realize the quality management of ductile cast iron, cope with the change in the amount of processed melt, and the automation of magnesium addition. [0007] As a device capable of putting a thread into a melt by such a thread-feeding method, there is a device disclosed in Patent Document 1. Because the magnesium contained in the wire has a low boiling point, it will have an explosive reaction when it comes into contact with a high-temperature melt. In order to control such an explosive reaction of magnesium, a control material for controlling the reaction is filled in the wire together with the magnesium alloy. [Prior Art Document] [Patent Document] [0008] [Patent Document 1] Japanese Patent Laid-Open No. 2016-16415
[發明所欲解決的課題] [0009] 然而，若將控制材料與鎂合金一起填充於線中，則線變重。由於此線的重量化，有線的運送作業之負荷增大，且專用進料器的線投入之負荷增大的問題。 [0010] 因此，基於上述之點，本發明之目的在於提供：於球墨鑄鐵之製造中進行石墨球狀化處理用的餵線法中，能控制鎂之反應，同時能輕量化之線。[Problems to be Solved by the Invention] [0009] However, when a wire is filled with a control material together with a magnesium alloy, the wire becomes heavy. Due to the weight of this line, the load of the line transportation operation increases, and the load of the line input of the dedicated feeder increases. [0010] Therefore, based on the foregoing, an object of the present invention is to provide a wire that can control the reaction of magnesium and reduce the weight of the magnesium wire in the wire feeding method for graphite spheroidizing in the production of ductile iron.
[解決課題的手段] [0011] 為了解決上述課題，請求項1之控制材料係於進行石墨球狀化處理用的餵線法中，與鎂合金一起填充於線內部者，特徵為：該控制材料係包含70～75重量%的SiO 2之多孔質的火山性矽酸鹽礦物。 [0012] 請求項1之控制材料由於是與鎂合金一起填充於線內部者，可降低線的鎂之濃度。因此，此線係在以進行石墨球狀化處理用的餵線法投入至熔液時，可控制鎂之反應。 [Means for Solving the Problem] [0011] In order to solve the above-mentioned problem, the control material of claim 1 is a wire feeding method for performing a graphite spheroidizing treatment, and the inside of the wire is filled with a magnesium alloy. The material is a porous volcanic silicate mineral containing 70 to 75% by weight of SiO 2 . [0012] Since the control material of claim 1 fills the inside of the wire together with the magnesium alloy, the magnesium concentration of the wire can be reduced. Therefore, this wire can control the reaction of magnesium when the wire is fed into the melt by the wire feeding method for spheroidizing graphite.
再者，請求項1之控制材料由於是包含70~75重量%的SiO2之多孔質的火山性矽酸鹽礦物，比以往之與鎂合金一起填充於線中控制材料較輕量。因此，請求項1之控制材料係可將與鎂合金一起填充的線予以輕量化。 Furthermore, since the control material of claim 1 is a porous volcanic silicate mineral containing 70 to 75% by weight of SiO 2 , it is lighter than the conventional control material that is filled in the wire together with a magnesium alloy. Therefore, the control material of claim 1 can reduce the weight of the wire filled with the magnesium alloy.
請求項2之控制材料係於請求項1之控制材料中，氣孔率為60~80%者。 The control material of claim 2 is the control material of claim 1 with a porosity of 60 to 80%.
球墨鑄鐵係在熔液中發生浮渣(dross)。若以浮渣殘留在熔液中之狀態進行澆鑄，則發生球墨鑄鐵的鑄造缺陷。此浮渣係浮出熔液之液面而成為熔渣。已浮出液面的熔渣係可去除。 Nodular cast iron has dross in the melt. If casting is performed with scum remaining in the molten metal, casting defects of nodular cast iron occur. This dross floats out of the liquid surface of the melt and becomes slag. The slag system that has surfaced can be removed.
然而，若熔渣之量多，則該熔渣之去除作業的負荷增大。特別地，由於從高溫的熔液之液面來去除熔渣的作業為危險，宜儘可能減少熔渣之去除作業的負荷。 However, if the amount of slag is large, the load of the slag removal operation increases. In particular, since the operation of removing slag from the liquid surface of a high-temperature melt is dangerous, it is desirable to reduce the load of the operation of removing slag as much as possible.
由包含SiO2之多孔質的火山性矽酸鹽礦物所構成的控制材料，係在熔液之中發泡而成為浮渣。由此包含SiO2之含多孔質的火山性矽酸鹽礦物所產生的浮渣，係浮出液面而成為熔渣。 A control material composed of a porous volcanic silicate mineral containing SiO 2 is foamed in a melt to become scum. The scum generated by the porous volcanic silicate mineral containing SiO 2 is floated on the liquid surface and becomes slag.
請求項2之控制材料係不僅與請求項1之控制材料同樣地作用，而且氣孔率高到60~80%，故控制材料的密度小。因此，請求項2之控制材料係即使發泡浮渣的體積也小，故該浮渣浮上的熔渣之量亦變小。因此，請求 項2之控制材料係可減輕熔渣的去除作業之負荷。 The control material of claim 2 not only acts the same as the control material of claim 1, but also has a porosity as high as 60 to 80%, so the density of the control material is small. Therefore, even if the volume of the foamed scum is small, the control material of claim 2 has a small amount of slag floating on the scum. So request The control material of item 2 can reduce the load of the slag removal operation.
請求項3之控制材料係於請求項1或2之控制材料中，Ig.loss(Ignition loss：灼燒減量)為0.5%以下者。 The control material of claim 3 is the control material of claim 1 or 2, and the Ig.loss (Ignition loss) is 0.5% or less.
由包含SiO2之多孔質的火山性矽酸鹽礦物所構成的控制材料，係Ig.loss愈小而熔液之中的控制材料之發泡量愈安定。 The control material composed of a porous volcanic silicate mineral containing SiO 2 has a smaller Ig.loss and a more stable foaming amount of the control material in the melt.
請求項3之控制材料係不僅與請求項1或2之控制材料同樣地作用，而且Ig.loss為0.5%以下之充分小。因此，請求項3之控制材料係已發泡的體積安定。因此，請求項3之控制材料係可細地調節浮渣及熔渣之發生量。 The control material of claim 3 not only functions in the same way as the control material of claim 1 or 2, but also has a sufficiently small Ig.loss of 0.5% or less. Therefore, the control material of claim 3 is a foamed volume stabilizer. Therefore, the control material of claim 3 can finely adjust the amount of scum and slag.
請求項3之控制材料由於發泡量安定，可細地調節熔液中之控制材料的發泡量。藉由以熔液中之控制材料的發泡量成為恰當範圍之方式調節，可調節在已發泡的控制材料中所產生的浮力。因此，請求項3之控制材料係可調節留在熔液中的時間，可高效率控制鎂之反應。 Since the foaming amount of the control material of claim 3 is stable, the foaming amount of the control material in the melt can be finely adjusted. By adjusting the foaming amount of the control material in the melt to an appropriate range, the buoyancy generated in the foamed control material can be adjusted. Therefore, the control material of claim 3 can adjust the time to stay in the melt, and can efficiently control the reaction of magnesium.
另一方面，以含有鎂的線所添加的成分亦在熔液內成為浮渣。當注入熔液的澆桶為大型時，如此的浮渣浮出熔液之液面係費時。若浮渣之浮出費時，則發生熔液之溫度降低、石墨球狀化之效果消失的問題。 On the other hand, the components added with the magnesium-containing wire also become scum in the melt. When the molten metal pouring barrel is large, it takes time for such dross to float out of the molten metal surface. If it takes time to float out the scum, there will be a problem that the temperature of the melt decreases and the effect of spheroidization of graphite disappears.
請求項3之控制材料例如係藉由以熔液中之控制材料的發泡量成為恰當範圍之方式調節，而可調節已發泡的控制材料中所發生的浮力。因此，請求項3之控制材料係藉由在熔液中發泡，與以含有鎂的線所添加的成分之浮渣一起，浮出熔液之液面，而可調整浮渣浮出熔液的液面之時間。 [0025] 控制材料若發泡量過大，則會接觸澆桶的內表面及附著。如此之已發泡的控制材料之附著係有對於球墨鑄鐵的品質造成不良影響之可能性，同時有引起澆桶的損傷之可能性。 [0026] 請求項3之控制材料例如係藉由以熔液中之控制材料的發泡量成為恰當範圍之方式調節，而可在已發泡的控制材料接觸澆桶的內表面及附著之前，容易地去掉。 [0027] 請求項4之控制材料係於請求項1～3中任一項之控制材料中，比重為0.5～1.0g/cm 3者。 [0028] 請求項4之控制材料係不僅與請求項1～3中任一項之控制材料同樣地作用，而且比重為0.5～1.0g/cm 3之比以往的控制材料充分地小。因此，請求項4之控制材料與鎂合金一起填充的線係可輕量化。 [0029] 請求項5之控制材料係於請求項1～4中任一項之控制材料中，直徑未達5mm的球體之燒成體或長度未達5mm的棒體之燒成體者。 [0030] 由包含SiO 2之多孔質的火山性矽酸鹽礦物所構成的控制材料係藉由燒成而發泡量更安定。 [0031] 請求項5之控制材料係不僅與請求項1～4中任一項之控制材料同樣地作用，而且為直徑未達5mm的球體之燒成體或長度未達5mm的棒體之燒成體，故發泡量安定。請求項5之控制材料由於發泡量安定，可細地調節熔液中之控制材料的發泡量。因此，具有與請求項3之控制材料同樣的作用。 [0032] 請求項6之控制材料的製造方法係於進行石墨球狀化處理用的餵線法用之控制材料的製造方法中，其控制材料為由包含70～75重量%的SiO 2之多孔質的火山性矽酸鹽礦物所構成。 [0033] 由請求項6之控制材料的製造方法所製造的控制材料係具有與請求項1之控制材料同樣的作用。 [0034] 請求項7之控制材料的製造方法係控制材料為以粒徑0.1mm以下且含有15～35重量%的水分之粉末狀的火山性矽酸鹽礦物作為黏結劑，將平均粒徑為3mm以下之多孔質的火山性矽酸鹽礦物加工成直徑未達5mm的球體或長度未達5mm的棒體而成。 [0035] 由請求項7之控制材料的製造方法所製造的控制材料係可配合熔液之量、溫度等之條件，實現恰當的控制材料之溶解及恰當的鎂所致之石墨球狀化的反應時間。 [0036] 請求項8之控制材料的製造方法係控制材料為在900～1000℃所燒成者。 [0037] 由請求項8之控制材料的製造方法所製造的控制材料係可配合熔液之量、溫度等之條件，實現恰當的鎂所致之石墨球狀化的反應時間。此外，由請求項8之控制材料的製造方法所製造的控制材料係可藉由燒成而進一步調節發泡量。因此，由請求項8之控制材料的製造方法所製造的控制材料係具有與請求項3之控制材料同樣的作用。 The control material of claim 3 can adjust the buoyancy occurring in the foamed control material, for example, by adjusting the foaming amount of the control material in the melt to an appropriate range. Therefore, the control material of claim 3 is capable of adjusting the scum floating out of the melt by foaming in the melt together with the scum of the component added by the wire containing magnesium, and the scum floating out of the melt. Liquid time. [0025] If the amount of foaming of the control material is too large, it will contact the inner surface of the ladle and adhere to it. The adhesion of the foamed control material may have an adverse effect on the quality of nodular cast iron, and may cause damage to the ladle. [0026] The control material of claim 3 is adjusted, for example, by making the foaming amount of the control material in the melt into an appropriate range, and before the foamed control material contacts the inner surface of the ladle and adheres, Remove easily. [0027] The control material of claim 4 is the control material of any one of claims 1 to 3 and has a specific gravity of 0.5 to 1.0 g / cm 3 . [0028] The control material of claim 4 not only functions similarly to the control material of any of claims 1 to 3, but also has a specific gravity of 0.5 to 1.0 g / cm 3 that is sufficiently smaller than that of conventional control materials. Therefore, the line in which the control material of claim 4 is filled together with the magnesium alloy can be reduced in weight. [0029] The control material of claim 5 is a fired body of a sphere of less than 5 mm in diameter or a fired body of a rod of less than 5 mm in the control material of any one of claims 1 to 4. [0030] The control material composed of a porous volcanic silicate mineral containing SiO 2 has a more stable foaming amount by firing. [0031] The control material of claim 5 not only functions in the same way as the control material of any of claims 1 to 4, but also is a fired body of a sphere having a diameter of less than 5 mm or a fired rod having a length of less than 5 mm. Adult, so the amount of foam is stable. Since the foaming amount of the control material of claim 5 is stable, the foaming amount of the control material in the melt can be finely adjusted. Therefore, it has the same effect as the control material of claim 3. [0032] The method for manufacturing a control material according to claim 6 is a method for manufacturing a control material for a wire feeding method for performing graphite spheroidization, wherein the control material is a porous material containing 70 to 75% by weight of SiO 2 Of volcanic silicate minerals. [0033] The control material manufactured by the method for manufacturing a control material of claim 6 has the same function as the control material of claim 1. [0034] A method for manufacturing a control material according to claim 7 is to use a volcanic silicate mineral having a particle size of 0.1 mm or less and containing 15 to 35% by weight of water as a binder, and the average particle size is Porous volcanic silicate minerals below 3mm are processed into spheres up to 5mm in diameter or rods up to 5mm in length. [0035] The control material manufactured by the method for manufacturing a control material according to claim 7 can be adapted to conditions such as the amount and temperature of the melt to achieve proper dissolution of the control material and proper spheroidization of graphite caused by appropriate magnesium. Reaction time. [0036] The method for manufacturing a control material according to claim 8 is a method in which the control material is fired at 900 to 1000 ° C. [0037] The control material manufactured by the method for manufacturing a control material according to claim 8 can be adapted to the conditions such as the amount of the melt and the temperature to achieve an appropriate reaction time for the spheroidization of graphite caused by magnesium. In addition, the control material manufactured by the method for manufacturing a control material according to claim 8 can further adjust the foaming amount by firing. Therefore, the control material manufactured by the method of manufacturing the control material of claim 8 has the same function as the control material of claim 3.
[發明效果] [0038] 請求項1～5中任一項之控制材料及由請求項6～8任一項之控制材料的製造方法所製造的控制材料，係在球墨鑄鐵之製造中的進行石墨球狀化處理用之餵線法中，可控制鎂之反應，同時可輕量化。[Inventive Effects] [0038] The control material according to any one of claims 1 to 5 and the control material manufactured by the method for manufacturing a control material according to any one of claims 6 to 8 are performed in the production of ductile iron. In the wire feeding method used for graphite spheroidizing treatment, the reaction of magnesium can be controlled while being lightweight.
[實施發明的形態] [0039] 餵線法所使用的線為線徑6～16mm。此線係以金屬的薄板被覆鎂合金、控制材料、添加劑者。 [0040] 說明本發明的一實施形態之控制材料的製造方法。 [0041] 首先，第一步驟為篩分包含SiO 2之多孔質的火山性矽酸鹽礦物。藉由此篩分，得到粒徑0.1mm以下且包含15～35重量%的水分之粉末狀的火山性矽酸鹽礦物與粒徑為3mm以下之多孔質的火山性矽酸鹽礦物。 [0042] 其次，第二步驟係將粒徑0.1mm以下之粉末狀的火山性矽酸鹽礦物當作黏結劑，與粒徑為3mm以下之多孔質的火山性矽酸鹽礦物混合，造粒成直徑未達5mm的球體。 [0043] 隨後，第三步驟係使經造粒的直徑未達5mm的球體乾燥。 [0044] 接著，第四步驟係將經造粒的直徑未達5mm的球體在900～1000℃燒成。 [0045] 以上述步驟，製造本發明之一實施形態的控制材料。 [0046] 分析如此所製造的控制材料，結果如以下。 [0047] 控制材料為包含73.0重量%的SiO 2之多孔質的火山性矽酸鹽礦物。控制材料之氣孔率為60～80%之範圍內。控制材料之Ig. loss為0.33%。控制材料之比重為0.5～1.0g/cm 3之範圍內。控制材料之球體的直徑係直徑未達5mm。 [0048] 為了確認本實施形態之控制材料的吸水率，進行以下之實驗。將控制材料50g置入直徑120mm、深度30mm的鋁皿內，在溫度105℃的乾燥爐中乾燥24小時。測定經此乾燥的控制材料之質量(以下，乾燥時質量)。 [0049] 接著，將經該乾燥的控制材料置入溫度20℃、濕度90%RH的環境槽內。於環境槽內120小時吸水的過程中，定期地測定已吸水的控制材料之質量(給水時質量)。 [0050] 計算吸水率(%)=(給水時質量-乾燥時質量)/乾燥時質量´100，結果本實施形態之控制材料從吸水開始時起到經過120小時之時間為未達1%。 [0051] 因此，本實施形態之控制材料係隨著時間經過，幾乎不從大氣中吸水。因此，此控制材料係長期間的保管容易。此外，經長期間保管的控制材料係與使用未長期間保管的控制材料之情況同樣地，熔液之中的發泡量為安定。 [0052] 於上述之控制材料的製造方法之實施形態中，說明將粒徑0.1mm以下之粉末狀的火山性矽酸鹽礦物當作黏結劑，與粒徑為3mm以下之多孔質的火山性矽酸鹽礦物混合，造粒成直徑未達5mm的球體之情況，但不受此所限定。亦可將粒徑0.1mm以下之粉末狀的火山性矽酸鹽礦物當作黏結劑，與粒徑為3mm以下之多孔質的火山性矽酸鹽礦物混合，加工成長度未達5mm的棒體。 [0053] 於上述之控制材料的實施形態制中，說明控制材料為包含73.0重量%的SiO 2之多孔質的火山性矽酸鹽礦物之情況，但不受此所限定。只要是按照鑄造條件，控制材料為包含70～75重量%的SiO 2之多孔質的火山性矽酸鹽礦物即可。 [0054] 於上述之控制材料的實施形態制中，說明控制材料之Ig. loss為0.33%之情況，但不受此所限定。只要是按照鑄造條件，控制材料係Ig. loss為0.5%以下即可。 [Mode for Carrying Out the Invention] [0039] The wire used in the thread feeding method has a wire diameter of 6 to 16 mm. This wire is coated with a thin sheet of metal, a magnesium alloy, a control material, and an additive. [0040] A method for manufacturing a control material according to an embodiment of the present invention will be described. [0041] First, the first step is to screen a porous volcanic silicate mineral containing SiO 2 . Through this sieving, a powdery volcanic silicate mineral having a particle size of 0.1 mm or less and containing 15 to 35% by weight of water and a porous volcanic silicate mineral having a particle size of 3 mm or less are obtained. [0042] Next, the second step is to use powdered volcanic silicate minerals with a particle size of 0.1 mm or less as a binder, mix with a porous volcanic silicate minerals with a particle size of 3 mm or less, and granulate. Into spheres up to 5mm in diameter. [0043] Subsequently, the third step is to dry the granulated spheres having a diameter of less than 5 mm. [0044] Next, the fourth step is to fire the granulated spheres having a diameter of less than 5 mm at 900 to 1000 ° C. [0045] According to the above steps, a control material according to an embodiment of the present invention is manufactured. [0046] When the control material thus manufactured was analyzed, the results are as follows. [0047] The control material is a porous volcanic silicate mineral containing 73.0% by weight of SiO 2 . The porosity of the control material is in the range of 60 to 80%. The Ig. Loss of the control material is 0.33%. The specific gravity of the control material is in a range of 0.5 to 1.0 g / cm 3 . The diameter of the sphere of the control material is less than 5mm. [0048] In order to confirm the water absorption of the control material of this embodiment, the following experiments were performed. 50 g of the control material was placed in an aluminum dish having a diameter of 120 mm and a depth of 30 mm, and dried in a drying oven at a temperature of 105 ° C. for 24 hours. The mass of the control material thus dried (hereinafter, the mass during drying) was measured. [0049] Next, the dried control material was placed in an environmental tank having a temperature of 20 ° C and a humidity of 90% RH. During the 120 hours of water absorption in the environmental tank, the quality of the control material that has absorbed water (quality at the time of water supply) is periodically measured. [0050] Calculate the water absorption rate (%) = (mass during water supply-mass during drying) / mass during drying ´100. As a result, the control material in this embodiment has a time of less than 1% from the start of water absorption to 120 hours. [0051] Therefore, the control material of this embodiment hardly absorbs water from the atmosphere over time. Therefore, this control material is easy to store for a long period of time. The control material stored for a long period of time is the same as when the control material stored for a long period of time is used, and the amount of foaming in the melt is stable. [0052] In the embodiment of the manufacturing method of the control material described above, it is explained that a powdery volcanic silicate mineral having a particle size of 0.1 mm or less is used as a binder, and a porous volcanic property having a particle size of 3 mm or less The case where silicate minerals are mixed and granulated into spheres with a diameter of less than 5 mm is not limited thereto. It is also possible to use powdered volcanic silicate minerals with a particle size of 0.1mm or less as a binder, and mix with porous volcanic silicate minerals with a particle size of 3mm or less to process into rods less than 5mm in length. . [0053] In the embodiment of the control material described above, the case where the control material is a porous volcanic silicate mineral containing 73.0% by weight of SiO 2 will be described, but it is not limited thereto. What is necessary is just to control the material to be a porous volcanic silicate mineral containing 70 to 75% by weight of SiO 2 in accordance with the casting conditions. [0054] In the embodiment of the control material described above, a case where the Ig. Loss of the control material is 0.33% will be described, but it is not limited thereto. As long as it is in accordance with the casting conditions, the control material Ig. Loss is 0.5% or less.
Claims (8)
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| JP2017-037945 | 2017-03-01 | ||
| JP2017037945A JP6235178B1 (en) | 2017-03-01 | 2017-03-01 | Control material and control material manufacturing method |
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| TW201833057A TW201833057A (en) | 2018-09-16 |
| TWI647205B true TWI647205B (en) | 2019-01-11 |
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| US (1) | US20180251864A1 (en) |
| EP (1) | EP3369830B1 (en) |
| JP (1) | JP6235178B1 (en) |
| KR (1) | KR102083076B1 (en) |
| CN (1) | CN108531680A (en) |
| BR (1) | BR102018004194B1 (en) |
| CA (1) | CA2996376C (en) |
| ES (1) | ES2790951T3 (en) |
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| US6818055B2 (en) * | 2000-08-16 | 2004-11-16 | Mattig & Lindner Gmbh | Porous silicate granular material and method for producing it |
| CN104328331A (en) * | 2014-11-28 | 2015-02-04 | 三祥新材股份有限公司 | Method for improving residual magnesium amount in nodular iron casting |
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| JPS4922324A (en) * | 1972-06-21 | 1974-02-27 | ||
| JPS52895B2 (en) * | 1974-03-19 | 1977-01-11 | ||
| JPS53128532A (en) * | 1977-04-15 | 1978-11-09 | Tomofumi Ono | Heat insulating material of ladle dead head etc in case of iron manufacture and casting |
| JPS5433818A (en) * | 1977-08-22 | 1979-03-12 | Toyo Soda Mfg Co Ltd | Method of fabricating spheroidal graphite cast iron |
| GB8712168D0 (en) * | 1987-05-22 | 1987-06-24 | Foseco Int | Metallurgical treatment agents |
| JPH04371509A (en) * | 1991-06-18 | 1992-12-24 | Komatsu Ltd | Magnesium wire for graphite spheroidizing treatment |
| JP3892545B2 (en) * | 1997-09-11 | 2007-03-14 | 株式会社神戸製鋼所 | Lightweight aggregate manufacturing method |
| JP2002206112A (en) | 2000-12-28 | 2002-07-26 | Osaka Special Alloy Co Ltd | Compound graphite spheroidizing agent |
| JP2007320805A (en) * | 2006-05-31 | 2007-12-13 | Taiheiyo Material Kk | Hard foamed pearlite and its manufacturing method |
| GB0614705D0 (en) * | 2006-07-25 | 2006-09-06 | Foseco Int | Improved meethod of producing ductile iron |
| CN101987350A (en) * | 2009-08-07 | 2011-03-23 | 大连核心铸造技术工程研究所 | Gray cast-iron sintered inoculant |
| CN102652967A (en) * | 2012-03-09 | 2012-09-05 | 山西银光华盛镁业股份有限公司 | Method for manufacturing high-magnesium-alloy solid cored wire |
| JP5138114B1 (en) * | 2012-07-06 | 2013-02-06 | 石川ライト工業株式会社 | Cover material covering the upper part of the spheroidizing agent during the spheroidizing treatment of cast iron |
| JP6182362B2 (en) | 2013-06-06 | 2017-08-16 | 株式会社Ｊｆｓ貿易 | Method of spheroidizing graphite in molten cast iron |
| JP2016016415A (en) | 2014-07-07 | 2016-02-01 | 東洋電化工業株式会社 | Wire corrector |
| JP2016135718A (en) * | 2015-01-23 | 2016-07-28 | 安心院パーライト工業株式会社 | Mortar composition contaminated with expanded perlite |
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- 2017-03-01 JP JP2017037945A patent/JP6235178B1/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6818055B2 (en) * | 2000-08-16 | 2004-11-16 | Mattig & Lindner Gmbh | Porous silicate granular material and method for producing it |
| CN104328331A (en) * | 2014-11-28 | 2015-02-04 | 三祥新材股份有限公司 | Method for improving residual magnesium amount in nodular iron casting |
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| KR20180100479A (en) | 2018-09-11 |
| TR201802948A2 (en) | 2018-09-21 |
| BR102018004194B1 (en) | 2022-07-05 |
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| JP6235178B1 (en) | 2017-11-22 |
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| CA2996376A1 (en) | 2018-09-01 |
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| EP3369830A1 (en) | 2018-09-05 |
| CA2996376C (en) | 2020-04-14 |
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