JP4393781B2 - Disk roll and manufacturing method thereof - Google Patents

Description

【００２９】
表１から、本発明に従い、無機繊維と、マイカと、水簸処理された木節粘土とを特定量含有する各実施例のディスクロールは、実用上問題のない耐熱性及び耐磨耗性を有し、更にガラス面を傷付けることもなく、適度の柔軟性を備えることがわかる。
【００３０】
【発明の効果】
以上説明したように、本発明によれば、耐熱性や耐久性に優れ、適度の柔軟性を有し、長寿命で、特に大面積の高品位板ガラスの製造に適したディスクロールが提供される。
【図面の簡単な説明】
【図１】本発明のディスクロールの一例を示す概略図である。
【図２】図１に示すディスクロールの一使用例（板ガラス製造装置）を示す概略図である。
【符号の説明】
１０ ディスクロール
１１ 金属製シャフト
１２ ディスク材
１３ フランジ
１５ ナット
１００ 板ガラス製造装置
１０１ 溶融炉
１０２ スリット
１１０ 帯状ガラス溶融物[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disk roll in which a plurality of ring-shaped disk materials are inserted into a rotating shaft, and a conveying surface is formed by the outer peripheral surface of the disk material, and more particularly to a disk roll suitable for manufacturing high-quality plate glass. The present invention also relates to a method for manufacturing the disk roll.
[0002]
[Prior art]
In the production of plate glass, a conveyance mechanism is required for forming the plate glass from the molten state and for gradually cooling the formed plate glass. Generally, this transport mechanism is constituted by a transport roll, and a disk roll is used as one of the transport rolls.
[0003]
FIG. 1 is a schematic view showing an example of a disk roll 10, but a disk roll base material in which an aqueous slurry containing inorganic fibers, an inorganic filler, a binder, and the like is formed into a plate having a thickness of several millimeters is formed in a ring shape. A plurality of the disk members 12 are inserted into a metal shaft 11 serving as a rotating shaft to form a roll-shaped laminate, and the whole is pressed through flanges 13 disposed at both ends to be disk members 12. The outer peripheral surface of the disk material 12 functions as a conveying surface.
[0004]
And said disc roll 10 is integrated in the plate glass manufacturing apparatus 100 shown in FIG. 2, and is used for shaping | molding and conveyance of plate glass. The plate glass manufacturing apparatus 100 continuously discharges the glass melt 110 from the slits 102 that are linearly opened in the melting furnace 101, causes the discharged belt-shaped glass melt 110 to flow down, and cools it during the flow. Although it is an apparatus which manufactures plate glass by making it harden | cure, the disk roll 10 functions as a pair of tension | pulling roll, clamps the strip | belt-shaped glass melt 110, and is forcibly sent out below. Therefore, it is preferable that the disk roll 10 has a certain degree of flexibility so as not to damage the glass surface in addition to heat resistance, and a disk roll containing mica particles is known (Patent Document 1).
[Patent Document 1]
Japanese Examined Patent Publication No. 59-28771 [0005]
[Problems to be solved by the invention]
However, the more flexible, the more easily the disk roll becomes worn and the life is shortened. In liquid crystal displays and plasma displays, the quality requirements for plate glass are particularly strict, and it is an important issue to prevent surface contamination due to abrasion powder (powder falling) from the disk roll. Then, since it is easy to wear, it is easy to cause this powder fall and to cause a decrease in yield.
[0006]
In order to impart flexibility to the disk roll, it is possible to take measures to lower the packing density by lowering the pressure when filling the disk material 12 to the shaft 11, but this will adversely affect the durability of the disk roll and reduce the roll life. It will be shortened.
[0007]
The present invention has been made in view of such circumstances, and provides a long-life disk roll having excellent heat resistance and durability, moderate flexibility, despite a low packing density. For the purpose.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides the following disk roll and method for producing the same.
(1) In a disk roll formed by inserting a plurality of ring-shaped disk materials on a rotating shaft and forming a conveying surface by the outer peripheral surface of the disk material, the disk material is an inorganic fiber with respect to the total amount of the disk material. 5 to 40% by mass, 5 to 60% by mass of mica having an average particle size of 100 to 300 μm, and the content of particle components having an average particle size of 5 μm or more that has been treated with waterpox is 30% by mass or less of the total amount of clay , and disk rolls which impurity concentration is characterized in that it comprises 20 to 40 wt% of the kibushi clay 10 mass% or less of the clay total amount.
(2) the amount of kibushi clay, characterized in that 30 to 40 weight percent of the disk material total volume (1) disk roll according.
(3) In Kibushi clay, above, wherein the content of the average particle size 5μm or more particle-diameter is equal to or less than 15 wt% of clay total amount (1) or (2) a disk roll according.
(4) The disk roll according to any one of (1) to (3) above , wherein the content of mica is 25 to 35% by mass of the total amount of the disk material .
(5) The disk roll according to any one of (1) to (4) above, wherein the mica is white mica .
(6) In a manufacturing method of a disk roll in which a plurality of ring-shaped disk materials are inserted into a rotating shaft and a conveying surface is formed by the outer peripheral surface of the disk material, 5-40% by mass of inorganic fibers and average grains 5 to 60% by mass of mica having a diameter of 100 to 300 μm, the content of a particle component having an average particle size of 5 μm or more treated with waterpox is 30% by mass or less of the total amount of clay, and the impurity concentration is 10% of the total amount of the clay % To obtain a disk roll base material by forming a slurry raw material containing 20 to 40% by mass of Kibushi clay, which is not more than%, into a plate shape, a process of punching a disk material from the disk roll base material, and the disk material method of manufacturing features and to Lud I scroll further comprising a step of fixing the disk member was inserted into the plurality rotational axis.
(7) above (6) Symbol mounting disc manufacturing method of the roll which is characterized in that the papermaking method the step of obtaining a disk roll substrate.
[0009]
The disc roll of the present invention has a low packing density because the clay particles contained in the disc material and having a uniform particle diameter express a stronger caking action and firmly restrain other filling materials in the disc material. However, it is excellent in flexibility and abrasion resistance, and is particularly suitable for production of a high-quality plate glass having a large area.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail.
[0011]
The structure of the disk roll of the present invention may be the same as that of the conventional one. For example, the disk roll 10 shown in FIG. 1 can be exemplified. In the present invention, the inorganic fiber disc member 12, and the mica having an average particle size of 100 to 300 [mu] m, average particle content of diameter 5μm or more grain-diameter is not more than 30 wt% of clay total amount, and an impurity concentration of the each specific amount and kibushi clay or less 10 wt% clay total amount.
[0012]
Tree clause clay has a high binder effect, for impurities also less preferred. In the present invention, by adding this Kibushi clay, it is possible to improve the wear resistance of the disk material 12 by the curing action by drying and heating.
[0013]
Further, the Kibushi clay is separated and refined, and the content of the particle size component having an average particle size of 5 μm or more is 30% or less, preferably 15% by mass or less, more preferably 10% by mass. As for the lower limit, it is optimal that no particle size component having an average particle size of 5 μm or more is contained. Such fine and uniform clay particles exhibit a stronger binder ability and firmly restrain other disk materials.
[0014]
By this separation and purification, impurities are also removed at the same time. Generally, clay, which is a natural mineral, can be controlled to some extent by pulverizing and sizing. However, many impurities are contained, and these impurities often include those having no sinterability such as silica. In the disk roll 10, when it is used, it is sintered and cured by contact with a high-temperature transported object such as molten glass, but impurities that do not have sinterability inhibit the curing action of the disk material 12 at this time. In addition, there are many hard impurities, and there is a risk of being damaged especially when the plate glass is conveyed. In addition, the content of impurities is preferably as close to zero as possible, but in view of the actual situation such as labor and cost, the content of impurities is 10% by mass or less, particularly 5% by mass or less, based on the total amount of clay. Is preferably 1% by mass or less.
[0015]
In order to finely adjust the particle diameter to a certain range as described above, and to remove impurities, a varicella treatment is performed as a separation and purification method. In general, finer and sharper particle size distribution than dry sizing, because impurities with different specific gravity and size are removed by wet sizing , such as elutriation , and the sedimentation rate varies with the particle size. Can be obtained.
[0016]
As the inorganic fiber, various inorganic fibers conventionally used in disc rolls can be appropriately used. Examples thereof include ceramic fiber, mullite fiber, alumina fiber, silica fiber, silica / alumina fiber, glass fiber, rock wool fiber and the like. Is mentioned. Among these, alumina fibers, mullite fibers, silica / alumina fibers, and silica fibers excellent in heat resistance are preferable. In addition, two or more inorganic fines can be used in combination as necessary.
[0017]
Mica is known to be excellent in high elasticity, slipperiness, wear resistance, heat resistance, and the like, and is a material that has been industrially used for a long time in various fields. Is added for the purpose of following the thermal expansion of the shaft 11. In the disk crawl, as shown in FIG. 1, since the shaft 11 into which the disk material 12 is inserted is made of metal, when exposed to a high temperature, the shaft 11 is thermally expanded and extends along the axial direction. At this time, since the disk material 12 has a lower coefficient of thermal expansion than metal, the disk material 12 cannot follow the elongation of the shaft 11 and the disk materials 12 are separated from each other. On the other hand, mica has an extremely thin layer structure, and when heated, crystal water is released to cause crystal transformation. At that time, the mica tends to expand in the layer direction. The followability to the thermal expansion of the twelve shafts 11 is enhanced.
[0018]
As mica, white mica (mascobite; K ₂ Al ₄ (Si ₃ Al) ₂ O ₂₀ (OH) ₄ ), black mica, gold mica (progobite; K ₂ Mg ₆ (SiAl) ₂ O ₂₀ (OH) ₄ ) ), Paragonite, lepidnite, fluorine synthetic mica, etc. can be used, but considering the above-mentioned action of followability, white mica, in which the crystallization water is released at about 600 ° C. lower than the surface temperature of the molten glass, is preferable.
[0019]
The average particle diameter of mica is good Mashiku is 200-300 [mu] m. When the average particle size is within this range, since it is highly elastic, the function as a leaf spring for preserving the stress at the time of compression filling with other filling materials, particularly inorganic fibers, works effectively. The followability to thermal expansion can be further improved.
[0020]
The above inorganic fibers, elutriation treated kibushi clay, blending of mica, 5 to 40 mass% of the inorganic fibers disc material total amount is preferably 5 to 30 mass%, elutriation treated kibushi clay Is 20 to 40% by mass of the total amount of the disk material, and mica is 5 to 60% by mass of the total amount of the disk material, preferably 20 to 55% by mass. Within this range, flexibility and wear resistance are balanced. A well-maintained disc roll is obtained.
[0021]
Next, the manufacturing method of the disk roll of this invention is demonstrated. The manufacturing method basically follows the conventional method, and will be described with reference to FIG. 1 again. First, the inorganic fibers mentioned above, the aqueous slurry containing the elutriation treated kibushi clay and mica molded into a plate, drying, this time, it is preferable efficient use of papermaking method. That is, the inorganic fibers, elutriation treated kibushi clay and mica, flocculating aid if necessary, an organic fiber, an aqueous slurry containing a predetermined amount of organic binder, etc. is prepared, the plate-like this aqueous slurry at papermaking machine The base material for disk rolls can be obtained by forming into a shape and drying. In addition, the thickness of the base material for disk rolls can be set as appropriate, and may be the same as the conventional one, and is generally 2 to 10 mm.
[0022]
Next, a ring-shaped disk material 12 is punched from the disk roll base material, and a plurality of the disk materials 12 are fitted into a metal (for example, iron) shaft 11 to form a roll-shaped laminate, and flanges disposed at both ends. The whole is pressed from both ends via 13 and fixed with a nut 15 or the like in a state where a slight compression is applied to the disk material 12. Then, the roll 10 is obtained by grinding the outer peripheral surface of the disk material 12 so as to have a predetermined roll diameter.
[0023]
【Example】
Examples The present invention will be further described below with reference to examples and comparative examples, but the present invention is not limited thereby.
[0024]
An aqueous slurry in which the raw materials shown in Table 1 were blended was prepared, and a base material for a disk roll having dimensions of 100 mm × 100 mm × 6 mm after drying was prepared by a normal papermaking method. The front surface hardness of the thus obtained each base material for disk rolls were measured. The results are also shown in Table 1.
[0025]
In addition, each disk roll substrate was held in a heating furnace maintained at 900 ° C. for 180 minutes, and then naturally cooled to room temperature and rubbed by hand. Evaluation criteria are: ◯ = powder is transferred to the hand by friction, ◎ = no transfer or powder fall off, and the results are also shown in Table 1.
[0026]
Further, on the roll surface after evaluating the wear resistance, the total width of the gaps of the disk material was measured to evaluate the followability to the shaft. The evaluation criteria were ◎ when the total width was 0 mm, を, 1 mm or less, １〜, 1-2 mm, △, 2 mm. The results are also shown in Table 1.
[0027]
Further, a disk material having an outer diameter of 80 mm and an inner diameter of 30 mm was punched out from each disk roll base material, and fitted into an iron shaft having a diameter of 30 mm and a length of 100 mm, thereby producing a cylindrical disk roll as shown in FIG. Then, the disk roll was incorporated into a plate glass manufacturing apparatus having the configuration shown in FIG. 2 to actually manufacture the plate glass, and the surface of the obtained plate glass was visually observed to examine the occurrence of scratches. The results are also shown in Table 1.
[0028]
[Table 1]

[0029]
From Table 1, according to the present invention, according to the present invention, the disk roll of each example containing a specific amount of inorganic fiber, mica, and water- knotted kibushi clay has heat resistance and wear resistance that are not problematic in practice. It can be seen that it has moderate flexibility without damaging the glass surface.
[0030]
【The invention's effect】
As described above, according to the present invention is excellent in heat resistance and durability, has appropriate flexibility, a long life, a disk roll is provided with particularly suitable for the production of high quality plate glass having a large area .
[Brief description of the drawings]
FIG. 1 is a schematic view showing an example of a disk roll of the present invention.
FIG. 2 is a schematic view showing an example of use (plate glass manufacturing apparatus) of the disk roll shown in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Disc roll 11 Metal shaft 12 Disc material 13 Flange 15 Nut 100 Sheet glass manufacturing apparatus 101 Melting furnace 102 Slit 110 Strip glass melt

Claims (7)

In the disk roll formed by inserting a plurality of ring-shaped disk materials on the rotating shaft, and forming a conveying surface by the outer peripheral surface of the disk material,
The disk material is composed of 5 to 40% by mass of inorganic fibers and 5 to 60% by mass of mica having an average particle diameter of 100 to 300 μm, and a particle size component having an average particle diameter of 5 μm or more after being treated with water tank. in content is less 30 mass% of clay total amount, and disk rolls, wherein the impurity concentration comprises kibushi clay 10 mass% or less of the clay total amount 20 to 40 wt%. Disk rolls of claim 1, wherein the amount of the kibushi clay, characterized in that 30 to 40% by mass of the disk material total amount. In kibushi clay claim 1 or 2 disk roll according content of average particle size 5μm or more particle-diameter is equal to or less than 15 wt% of clay total amount. The disc roll according to any one of claims 1 to 3, wherein the mica content is 25 to 35 mass% of the total amount of the disc material . The disc roll according to any one of claims 1 to 4, wherein the mica is white mica . In a method of manufacturing a disk roll in which a plurality of ring-shaped disk materials are inserted into a rotating shaft, and a conveying surface is formed by the outer peripheral surface of the disk material,
5-40 mass% of inorganic fibers, 5-60 mass% of mica having an average particle diameter of 100-300 μm, and the content of particle components having an average particle diameter of 5 μm or more treated with starch syrup is 30 mass% or less of the total amount of clay, And the process of obtaining the base material for disk rolls by shape | molding the slurry raw material which contains 20-40 mass% of kibushi clay whose impurity concentration is 10 mass% or less of this clay whole quantity, and the said base material for disk rolls a step of punching out a disc material from method features and to Lud I scroll further comprising a step of fixing the disk member was fitted to the disk member on a plurality rotary shaft. Manufacturing method for a disk roll according to claim 6 Symbol mounting and performing the step of obtaining a disk roll substrate by papermaking method.

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