KR100981385B1 - Rubber roll for steel-making and manufacturing method thereof - Google Patents

Abstract

The present invention can increase the durability and adhesion quality by covering the soft rubber layer and the reinforcing rubber layer in the state of interposing the reinforcing layer having an integral mesh hole and embossing structure, and both ends are not damaged. Provided are a steel roll for preventing steel, and a method of manufacturing the same.

Steel roll for steel of the present invention has a cover portion 120 coupled to the iron core portion 110, the cover portion 120 is formed by using a volatile surface treatment agent, adhesion promoter after relatively rough surface polishing and surface cleaning A primer layer 121, a first adhesive layer 122 formed on the primer layer, a soft rubber layer 122 formed on the first adhesive layer, a second adhesive layer 123 formed on the soft rubber layer, formed on the second adhesive layer and integral And a reinforcing layer 125 having a mesh hole 125d and an embossing structure, a third adhesive layer 126 formed on the reinforcing layer, and a reinforcing rubber layer 127 formed on the third adhesive layer.

Cover part, primer layer, adhesive layer, soft rubber layer, reinforcement layer, reinforced rubber layer, spinning groove

Description

Steel rubber rolls and its manufacturing method {RUBBER ROLL FOR STEEL-MAKING AND MANUFACTURING METHOD THEREOF}

Industrial Applicability The present invention can be used for steel mills, such as ring rolls, squeeze rolls, deflector rolls, pinch rolls, hold down rolls, snubber rolls, bridal rolls, steel coiling rubber rolls, and rubber rolls for electroplating lines. A rubber roll and a method for producing the same.

In general, a rubber roll used in a steel mill consists of a cover member corresponding to a rubber layer and a core member such as a shell formed on the cover shaft.

The rubber roll has an A60 to 90 degree in terms of HS (shore) hardness corresponding to the dynamic hardness test method.

Under the HS A70, the following is understood to be flexible, and more is known to withstand high loads. For example, nitrile rubber (NBR) HS A70 is understood to be attached to the end of a high load clamp device.

On the other hand, rubber rolls for electroplating lines have HS A80-90, and at least one kind of natural rubber or synthetic rubber to satisfy chemical resistance, heat resistance, abrasion resistance, slip resistance, etc., resistant to acids, alkalis, oils, and the like. It mixes suitably and uses.

As shown in FIG. 1, the rubber roll and the rubber composition for a rubber roll according to the prior art are made of a metal shim 1 and at least one or more rubber coating layers 2 and 3.

The rubber coating layers 2 and 3 of the rubber roll according to the prior art have an ethylenic ball-saturated nitrile-conjugated diene-based high saturated copolymer rubber having a content of conjugated diene units in the polymer chain of 25% by weight or more, and an ethylenically unsaturated carboxylic acid. It is a vulcanized rubber layer formed from the rubber composition containing the zinc salt of.

Here, at least the rubber coating layer 2 in contact with the metal shim 1 is a vulcanized rubber layer formed of a rubber composition containing 100 parts by weight of a rubber component containing 50% by weight or more of highly saturated copolymer rubber and 10 to 40 parts by weight of zinc salt. Is characteristic.

However, the rubber roll of the prior art is not only present at least one layer after mixing the rubber composition thereof differently, but also does not present any constituent elements that can improve the interlayer bonding or bonding relationship. There is no disclosure of a technical method that can be hermetically attached to a metal shim.

In addition, the rubber roll of the prior art, when used for steelmaking, is exposed to various industrial chemicals and oils with the aging causes such as oxygen, heat, ozone, light, and the like, and is used while maintaining the resistance for a long time in repeated rotating compression loads. At this time, it does not have any structure capable of absorbing the load at both ends of the relatively weak rubber coating layer and may be damaged.

In addition, when the rubber roll of the prior art is formed of a rubber coating layer having high hardness and lacking elasticity, it is very difficult to attach to the metal core or the attachment structure is relatively weak, so a technical study on the method of bonding the high hardness rubber coating layer is necessary. .

In addition, the rubber roll of the prior art only contains the reinforcing short fibers in a ratio of 1 to 10 parts by weight per 100 parts by weight of the rubber component of the rubber composition located on the surface side of the roll, which can increase the mutual bonding structure between the rubber coating layer It has the disadvantage of failing to form any structure or structure, resulting in relatively low durability, and inherently failing to form a rubber coating layer, resulting in a relatively low product life.

In addition, the rubber roll of the prior art, as can be seen from the same name as the rubber coating layer, discloses only a manufacturing method in which the rubber is thinly coated on a small metal core, metal core length 3400mm, rubber roll length 2000mm, cover portion thickness 20t (Where 1t is 1 mm), there is no way to produce a steel roll for steelmaking.

In particular, the conventional rubber rolls manufactured for steel making are made of a single layer having a thickness of 20 tons, and thus have problems such as breakage or cracking of the adhesive layer due to a difference in coefficient of thermal expansion with a metal core.

An object of the present invention is to solve the problems of the prior art as described above, the cover portion formed with a soft rubber layer and a reinforced rubber layer in the state of interposing a reinforcing layer having an integral mesh hole and the embossed structure By providing a steel roll and a method for manufacturing the steel that can increase the durability and adhesion quality.

In addition, another object of the present invention is to form a radial groove of a fail safe structure at both ends of the cover portion, to prevent repeated damage to both ends of the cover portion by absorbing repeated loads or stopping cracking or progression. Provided are a steel roll for manufacturing steel and a method for producing the same.

An object of the present invention as described above, as described in detail below, in a rubber roll having at least one layer of cover portion to surround the iron core portion, the cover portion is pretreated by the relatively rough surface polishing and surface cleaning. A primer layer formed by applying a volatile surface treatment agent and an adhesion promoter to a work portion of an iron core; A first adhesive layer formed on the primer layer; A soft rubber layer formed on the first adhesive layer; A second adhesive layer formed on the soft rubber layer; A reinforcement layer formed on the second adhesive layer and having an integral mesh hole and an embossed structure; A third adhesive layer formed on the reinforcement layer; It is achieved by a steel roll for steel, characterized in that it comprises a reinforced rubber layer formed on the third adhesive layer.

In addition, another object of the present invention is a method for producing a rubber roll having at least one layer of cover to cover the core portion, the first step of performing a surface polishing and surface cleaning as a pre-treatment process for the iron core; A second step of forming a primer layer by using a volatile surface treatment agent and an adhesion promoter for rust prevention or fixation; A third step of forming a first adhesive layer on the primer layer using an intermetallic rubber adhesive; A fourth step of forming a soft rubber layer by winding and vulcanizing the soft rubber sheet on the first adhesive layer in a taping manner; A fifth step of forming a second adhesive layer on the soft rubber layer using an inter-rubber resin adhesive; A sixth step of forming a reinforcing layer having an integral mesh hole and an embossing structure on the second adhesive layer; A seventh step of forming a third adhesive layer on the reinforcement layer by using an inter-rubber resin adhesive; It is achieved by the method of manufacturing a rubber roll for steel, characterized in that it comprises an eighth step of forming a reinforced rubber layer by winding and vulcanizing the reinforced rubber sheet on the third adhesive layer in a taping manner.

Therefore, the steel roll for steel manufacturing according to the present invention prepares the iron core part through a pretreatment process of roughly polishing the surface with synthetic abrasive and performing surface cleaning for a long time, and forming a soft rubber layer on the iron core part with a primer layer and a first adhesive layer interposed therebetween. There is an advantage that can increase the adhesive performance.

In addition, the steel roll for steelmaking of the present invention forms a second adhesive layer and a reinforcing layer and a third adhesive layer on the soft rubber layer, and then bonds a reinforcing rubber layer having excellent physical properties such as hardness, strength, and elasticity, compared to the soft rubber layer. As a result, there is an advantage that the interlayer bonding performance can be manufactured to a very excellent and durable products.

In addition, the steel roll of the present invention uses a soft rubber layer having a relatively low manufacturing cost together with the reinforcing layer, thereby reducing the overall rubber roll manufacturing cost while reducing the overall rubber roll manufacturing cost while using a relatively high manufacturing cost. In addition, there is an advantage to improve both the product life, quality and productivity by improving the bonding state and method.

In addition, according to the manufacturing method of the steelmaking rubber roll of the present invention, by using the reinforcing layer as an intermediate bonding agent between the soft rubber layer and the reinforcing rubber layer, it is possible to significantly increase the mutual bonding strength, and fundamentally improve the durability of the rubber roll. There is an advantage to this. In particular, when reinforcing the engineering plastic film into a sheet shape, the reinforcing layer is formed by zigzag arrangement of a plurality of partial cutting lines, and forms projections between the partial cutting lines, and then pulls them in the sheet length direction to form an integral mesh hole. And by molding to have an embossed structure, there is an advantage that can be formed integrally compared to the short fiber or non-woven for general reinforcement to provide a relatively superior durability.

In addition, the manufacturing method of the steel roll of steelmaking of the present invention has a fail safe structure that can prevent the damage to both ends of the cover part by absorbing the repeated load or stopping the crack generation or progression by using a heating die. There is an advantage in that the spinning groove can be easily formed at both ends of the cover portion of the rubber roll.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the drawings, Figure 2 is a flow chart for explaining the manufacturing method of the rubber roll for steelmaking according to an embodiment of the present invention, Figures 3 and 4 are perspective views for explaining the reinforcement layer shown in FIG. In addition, Figure 5 is a perspective view for explaining the cross-sectional structure through an enlarged circle for the rubber roll of the present invention, Figure 6 is a perspective view for explaining a heating mold for forming a spinning groove in the rubber roll of the present invention, Figure 7 Is a perspective view of a rubber roll according to the present invention.

First, as shown in Figure 2, the manufacturing method of the steel rolls for steel production according to the present invention is used in various steel rubber roll standards (for example, outer diameter of the cover portion, outer diameter of the core, cover thickness, face length, etc.) used in steel mills Use the iron core corresponding to the conditions (e.g. basis weight, initial velocity, linear pressure, etc.).

The iron core may be stainless steel, carbon steel, or the like.

The first step (S10) of the manufacturing method of the rubber roll for steelmaking of the present invention is a pre-treatment process.

In the pretreatment process, the iron core is roughly polished with synthetic abrasive and then surface cleaned for a long time.

A blasting workshop and blasting apparatus are used for surface polishing. At this time, the both ends of the iron core except for the working portion in which the cover portion is to be formed in the iron core cover a protective cap (protect cap) to protect.

Then, using the compressed air of the blasting apparatus (for example, air pressure 7 ~ 9bar), the synthetic abrasive is sprayed on the middle portion of the core portion without a protective cap. At this time, it is preferable that the moving speed of the blasting gun which injects a synthetic abrasive is 200-400 mm / sec.

The synthetic abrasive is a molten alumina oxide or corundum having an aluminum oxide content of 96% by weight, having a granule diameter of 0.4 to 1.6 mm, and preferably having a roughness (Rz) depth of 40 to 60 µm.

When using such a synthetic abrasive, a relatively roughly polished outer circumferential surface is formed in the middle portion of the iron core portion.

The protective cap is then removed from the iron core and surface cleaning begins.

The surface cleaner used for surface cleaning has the composition of 8-9 weight% of hydrochloric acid, 70 weight% of water, and 21-22 weight% of cleaning agent, and is mixed and prepared in a large bathtub.

The iron core is cleaned and dried in a dipping method for 24 hours in the surface cleaner of the large bath.

In order to accelerate the dissolution of the surface cleaner, water is preferably mixed with hot water at 60 ° C. and stirred with a stirrer. In particular, the cleaning agent is a powder form containing an infiltrating agent, and a highly alkaline detergent, an emulsifier, and a polyphosphate may be used. It is preferable to include.

The roughened surface and the preliminary treatment of surface cleaning for a long time, the iron core is mounted on a rotary workbench (not shown) prepared in advance, and then the second step (S11) of the manufacturing method of the steel roll of steelmaking of the present invention proceeds.

The previously prepared rotary workbench is mounted to the pillar based on the side of the bearing block portion formed on both sides of the iron core portion to be temporarily detachable, a pillar portion for supporting the bearing block portion, a base portion on which the pillar portion is erected, and a side of the bearing block portion. It includes a gear motor-type rotating device for rotating one end of the iron core in the circumferential direction of the iron core, when forming the various layers in the following step, means a worktable that can rotate or stop the iron core.

The second step S11 is a step of forming a primer layer on the iron core.

The second step (S11) is to apply a volatile surface treatment agent (such as product name RUST HARD 55, etc.) for rust prevention and rust fixation to penetrate deep into the rough surface of the iron core, and then increase the adhesive strength between the metal and rubber thereon Adhesion promoters (eg, Dow Corning's product name PRIMER COAT, or LORD's product name Chemlock Primer 205, 207, etc.) are applied and dried to form a primer layer.

The third step S12 is a step of forming a first adhesive layer on the primer layer.

The first adhesive layer is dried using an intermetallic adhesive (e.g., product name Chemlock 250, 254, etc. of the company name LORD), to maintain an optimum adhesive state corresponding to the technical specifications provided by the intermetallic adhesive company.

The fourth step S13 is a step of forming a soft rubber layer on the first adhesive layer.

The soft rubber layer is formed by using the soft rubber sheet using at least one raw material rubber selected from natural rubber, synthetic rubber, and mixed rubber mixed therewith.

Looking at the sheet forming method, the raw material rubber is cut, soviet, blended compounding, basis weight, drilled to make a compounded rubber, it is molded and cut into a sheet shape to produce a sheet of unvulcanized rubber material.

The blending composition and vulcanization conditions of the soft rubber layer are shown in [Table 1].

Compound ingredient list Vulcanization condition Chlorosulfated Polyethylene Synthetic Rubber (8.5) + Chlorinated Polyethylene Resin (2.5) + Lead Monoxide (2.5) for Rubber + High Wear Resistance Carbon Black (1.5) + Dispersant (1.2) + Particle Size (nm) 26 to 30 61 to 100 medium-reinforced carbon black (3.6) + adhesion promoter for hydrogen peroxide cured rubber (0.44) + magnesium oxide (0.2) + phenolic antioxidant (0.28) + octamine (0.15) + paraffin chloride for rubber (0.7) + Dioctyl phthalate (0.9) + stearic acid (0.03) + antifoaming agent (0.3)




150 ℃ × 8hr

Herein, the blending component value means weight% added when the raw material rubber is 100% by weight.

Chlorosulphonated polyethylene synthetic rubber has excellent ozone resistance, oxygen resistance, heat resistance, weather resistance, oil resistance, weather resistance, and chemical resistance in vulcanized state, and maintains bright color without discoloration even after long-term external exposure. It has high tensile strength and wear resistance, and it is preferable to use CSM-10.

The chlorinated polyethylene resin has no double bonds in the main chain, so it has excellent weather resistance, ozone resistance, and heat aging resistance, and also has excellent chemical resistance, electrical properties, compatibility with other polymers, and impact resistance, flame resistance, It is preferable to use CPE, which is a thermoplastic elastomer that functions to improve oil resistance and adhesive properties.

Lead monoxide for rubber plays a role as a high purity polymer stabilizer, and it is preferable to use a litharge.

High Abrasion Furnace carbon black having a particle diameter (nm) of 26 to 30 plays a role of a reinforcing agent and it is preferable to use HAF.

A dispersant means a component which uniformly disperses the blending component in the rubber.

Semi Reinforcing Furnace carbon black having a particle diameter (nm) of 61 to 100 has good workability and dispersibility, and it is preferable to use SRF.

Adhesion promoters for peroxide cured rubber play a role as adhesion promoters and it is preferable to use Ricobond 1756.

Magnesium oxide plays a role as a rubber stabilizer or an oxidizer.

Phenol (phenol) anti-aging agent serves to prevent the aging phenomenon by oxygen, ozone, alkali, ultraviolet light, wind speed, etc., it is preferable to use NBC.

Octamine is used as an antioxidant.

Dioctyl phthalate (Dioctyl Phthalate) is a kind of rubber plasticizer means a component that gives flexibility to the rubber, DOP is preferably used.

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Stearic acid means rubber emulsifier.

It is preferable to use KEZADOL GR as an antifoaming agent.

These are blended with the raw material rubber and then vulcanized at a temperature of 150 ° C. for 8 hours to form a soft rubber layer.

On the other hand, the soft rubber sheet formed by the sheet forming method is wound in a taping manner on the first adhesive layer, and then vulcanized by a vulcanization device to become a soft rubber layer.

The fifth step S14 is to form a second adhesive layer on the soft rubber layer.

The second adhesive layer is applied to a rubbery resin resin (eg, a silane or silicone adhesive of the company name LORD) and dried in an optimally bondable state.

The sixth step S15 is to form a reinforcement layer on the second adhesive layer.

The reinforcement layer is formed using an engineering plastic film (e.g. polyether imide resin of Mitsubishi Plastics) with high heat resistance, high tensile strength and crack resistance.

Referring to FIGS. 3 and 4, the sheet shape 125a is formed using a material such as an engineering plastic film, and the plurality of partial cutting lines 125b are formed along the length direction of the sheet shape as zigzag. In addition, the protrusions 125c are formed on the surfaces between the partial cutting lines 125b, respectively.

When pulling this in the longitudinal direction of the sheet shape (F), as shown in FIG. 4, the plurality of partial cutting lines 125b are unfolded and formed as an integral mesh hole 125d and the embossing structure is strengthened by the protrusion 125c. Layer 125.

Since the reinforcement layer 125 has an integral mesh hole 125d while providing a relatively large adhesive area due to the embossing structure by the protrusion 125c, and the material itself has excellent physical properties, It has relatively superior durability compared to fiber or woven nonwovens.

Meanwhile, the reinforcing layer may be formed by molding a resin wire made of any one of polypropylene (PP), polyvinyl chloride (PVC), and polybenzimidazole (PBI) resin to have a lattice shape. .

Referring to FIG. 2, a seventh step S16 is a step of forming a third adhesive layer on the reinforcement layer 125.

The third adhesive layer is formed using a rubber-to-resin adhesive similar to or the same as the aforementioned second adhesive layer.

The eighth step S17 is a step of forming a reinforced rubber layer on the third adhesive layer.

Reinforcing rubber layer has the characteristics by the blending composition and vulcanization conditions of the following [Table 2]. For example, the reinforced rubber layer exhibits enhanced properties in flame retardancy, high temperature, durability, wear resistance, heat resistance, anti-aging, scorch characteristics, tensile strength, and the like.

The compounding composition and vulcanization conditions of this reinforced rubber layer are shown in [Table 2].

Compound ingredient list Vulcanization condition Natural rubber (10) + styrene butadiene rubber (2.0) + high wear resistance carbon black (4.5) with particle diameter (nm) 26-30 + zinc oxide (0.7) + phenolic antioxidant (0.3) + urethane rubber with hardness 90 (0.1) ) + Magnesium carbonate (0.2) + ethylene copolymer (0.9) such as ethylene-propylene or ethylene-propylene-diene units + dioctyl phthalate (1.6) + stearic acid (0.03) + antifoaming agent (0.4) + thiazole vulcanization accelerator ( 0.12) + Aromatic Process Oil (0.09) + First Thiuram Reinforcement Accelerator (0.2) + Second Thiuram Reinforcement Accelerator (0.14) + Sulfur (0.5) + Sulfenamide Vulcanization Accelerator (3.0) + Dispersant ( 0.15)




160 ℃ × 6hr

Here, the compounding component value means the weight% added when the high hardness heat resistant raw material rubber (eg, neoprene, EPDM) is 100% by weight.

Natural rubber enhances toughness and it is preferable to use N83.

Styrene butadiene rubber (Sterene-Butadiene Rubber) is a component that enhances the excellent wear resistance, heat resistance and stable scorch (scorch) and easy processability of vulcanization, it is preferable to use SBR 1502.

High Abrasion Furnace carbon black having a particle diameter (nm) of 26 to 30 plays a role of a reinforcing agent and it is preferable to use HAF.

Zinc oxide is an oxidizing substance.

Phenol (phenol) anti-aging agent serves to prevent the aging phenomenon by oxygen, ozone, alkali, ultraviolet light, wind speed, etc., it is preferable to use NBC.

It is preferable to use C-90 for the urethane rubber component of hardness 90.

delete

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Dioctyl phthalate (Dioctyl Phthalate) is a kind of plasticizer for rubber, which means a component giving flexibility to rubber, and it is preferable to use DOP.

Stearic acid means rubber emulsifier.

It is preferable to use KEZADOL GR as an antifoaming agent.

Thiazole vulcanization accelerators are yellow powders with no color difference and are preferably DM.

Aromatic process oil (PROCESS OIL) is a softening agent excellent in processability, it is preferable to use A-2.

The vulcanization accelerator of the first thiuram system plays a role of increasing the tensile strength, and TT is preferably used.

As a vulcanization accelerator of the second Thiuram system, it is preferable to use TRA as it plays a role in protecting the scorch corresponding to early vulcanization.

Sul- lfenamide-based vulcanization accelerator is preferably using CZ.

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The dispersant is preferably WB-222.

These are blended into the raw rubber and then formed into a reinforced rubber sheet for the reinforced rubber layer.

The reinforced rubber sheet for the reinforced rubber layer is also formed in the same or similar manner as the sheet forming method described above, and is then wound on the third adhesive layer by a taping method, and is vulcanized by a vulcanization condition and a vulcanizing device such as a temperature of 160 ° C. for 6 hours to strengthen the reinforced rubber layer. Becomes

As shown in FIG. 5, the cover part 120 stacked on the iron core part 110 may sequentially have the primer layer 121, the first adhesive layer 122, and the soft rubber layer 123 from the surface of the iron core part 110. ), The second adhesive layer 124, the reinforcing layer 125, the third adhesive layer 126, and the reinforcing rubber layer 127 are formed.

In particular, the primer layer 121 is formed on the roughly surface polished iron core portion 110, so that the first adhesive layer 122 allows the soft rubber layer 123 to exhibit optimal bonding performance together with the performance of the adhesion promoter itself. It serves to bond.

In addition, the second adhesive layer 124 and the third adhesive layer 126 are interconnected through the integral mesh hole 125d of the reinforcing layer 125 to form an interlayer bonding or bonding relationship between the soft rubber layer 123 and the reinforcing rubber layer 127. In addition, due to the embossed structure by the protrusion 125c, it is possible to maintain a more firm bonding state by providing an increased wide adhesive area.

2 or 6, in order to form the radial groove of the fail-safe structure at both ends of the cover portion 120, the manufacturing method of the steelmaking rubber roll of the present invention proceeds to the ninth step (S18).

The plurality of tightening means and a pair of heating dies 200 for this purpose is preferably manufactured to have a standard corresponding to the iron core 110 and the cover 120.

Each heating die 200 has a hollow disk-shaped body having a central hole 201 insertable at the end of the iron core portion 110, and is arranged along the radial direction from one side of the hollow disk-shaped body protruding fixed or separated assembly Bolt mounting portion 203 having a plurality of mold protrusions 202, and bolt holes that are fixed while maintaining a gap in the circumferential direction on the circumferential surface of the hollow disk-shaped body is fastened to the tension bolt 210 corresponding to the tightening means, hollow The other side of the disc-shaped body is composed of a plurality of heat transfer heaters 204 installed.

The plurality of mold protrusions 202 are disposed based on the outer edge of the hollow disk-shaped body in consideration of the shape of the iron core portion 110, and positioned between the outer diameter position of the iron core portion 110 and the diameter position of the cover portion 110. It is preferable to be.

After the pair of heating dies 200 are inserted into both sides of the iron core 110, for example, as the six pairs of tension bolts 210 and the nuts 211 are fastened and tightened, they move in a direction that is closer to each other. And pressurizes and heats both end surfaces of the cover part 120 in accordance with the operation of the electrothermal heater part 204, thereby eventually forming the radial groove 130 as shown in FIG. 7 at both ends of the cover part 120. It is formed in the cross section.

The radial groove 130 is a circumferential opening having one side toward the passage portion 131 and a passage portion 131 which is finned to a finite depth in the longitudinal direction of the cover portion 120 at both end surfaces of the cover portion 120. Each of the holes 132 is provided.

When the rubber roll of the present invention is used, the compressive load generated in the cover part 120 is absorbed or dispersed according to the shape and arrangement characteristics of the spinning groove 130, and thus serves to prevent damage to the cover part 120.

Then, in the manufacturing method of the rubber roll for steelmaking of the present invention, after separating the heating mold from the iron core 110 and the cover 120, the shape corresponding to the use of the cover 120 (for example, crown shape, etc.) The rubber surface of the cover part 120 is polished to be formed, and a tenth step S19 of forming a crown shape or the like is performed.

The steel rolls manufactured as described above are packaged, loaded and shipped after a test of a predetermined rubber roll standard.

1 is a perspective view of a rubber roll according to the prior art.

2 is a flowchart illustrating a method of manufacturing a rubber roll for steelmaking according to an embodiment of the present invention.

3 and 4 are perspective views for explaining the reinforcement layer shown in FIG.

5 is a perspective view for explaining a cross-sectional structure through an enlarged circle for the rubber roll of the present invention.

Figure 6 is a perspective view for explaining a heating die for forming a spinning groove in the rubber roll of the present invention.

7 is a perspective view of a rubber roll according to the present invention.

              Description of the main parts of the drawing

110: iron core 120: cover

121: primer layer 122: first adhesive layer

123: soft rubber layer 124: second adhesive layer

125: reinforcement layer 126: third adhesive layer

127: reinforced rubber layer 130: spinning groove

200: heating mold 210: tension bolt

Claims (12)

In a rubber roll having at least one layer of cover to surround the iron core, The cover part A primer layer formed by applying a volatile surface treatment agent and an adhesion promoter to a work portion of the core portion pretreated with the iron core portion by relatively rough surface polishing and surface cleaning; A first adhesive layer formed on the primer layer; A soft rubber layer formed on the first adhesive layer; A second adhesive layer formed on the soft rubber layer; A reinforcement layer formed on the second adhesive layer and having an integral mesh hole and an embossed structure; A third adhesive layer formed on the reinforcement layer; A reinforcing rubber layer formed on the third adhesive layer and containing at least three vulcanization accelerators; Include, The soft rubber layer, Based on 100% by weight of raw rubber, 8.5 wt% chlorosulfated polyethylene synthetic rubber, 2.5 wt% chlorinated polyethylene resin, 2.5 wt% lead monoxide for rubber, 1.5 wt% particle size (nm) 26-30 high wear resistant carbon black, 1.2 wt% dispersant, 3.6 wt% particle size (nm) 61-100 heavy reinforcing carbon black, 0.44 wt% adhesion promoter for hydrogen peroxide cured rubber, 0.2 wt% magnesium oxide, 0.28 wt% phenolic antioxidant, 0.15 wt% octamine ( Antioxidants), 0.7 wt% rubber paraffin chloride, 0.9 wt% dioctyl phthalate (rubber plasticizer), 0.03 wt% stearic acid (rubber emulsifier), 0.3 wt% antifoaming agent, It is blended with raw material rubber and vulcanized at a temperature of 150 ° C. for 8 hours to form The reinforced rubber layer, Based on 100% by weight of raw rubber, 10% by weight natural rubber, 2% by weight styrene butadiene rubber, 4.5% by weight particle size (nm) 26-30 high wear-resistant carbon black, 0.7% by weight zinc oxide, 0.3% by weight phenolic antioxidant, 0.1% by weight Urethane rubber with a hardness of 90%, 0.2% by weight magnesium carbonate, 0.9% by weight ethylene copolymer such as ethylene-propylene or ethylene propylene-diene units, 1.6% by weight dioctyl phthalate (rubber plasticizer), 0.03% by weight Stearic acid (rubber emulsifier), 0.4% by weight of antifoaming agent, 0.12% by weight of azole vulcanization accelerator, 0.09% by weight of aromatic process oil, 0.2% by weight of first thiuram vulcanization accelerator, 0.14% by weight of second Thiuram vulcanization accelerator, 0.5 wt% sulfur, 3 wt% sulfenamide vulcanization accelerator, 0.15 wt% dispersant, It is mix | blended with raw material rubber, and it vulcanizes and forms at 160 degreeC and 6 hours, The rubber roll for steelmaking characterized by the above-mentioned. delete delete The method of claim 1, The first adhesive layer is an intermetallic rubber adhesive, and the second adhesive layer and the third adhesive layer is a rubber roll for steel, characterized in that the use of a rubber resin between the adhesive. The method of claim 1, The reinforcement layer is A steel roll for steel making comprising: a sheet-shaped engineering plastic film having three or more partial cutting lines and protrusions formed by pulling in a sheet-shaped longitudinal direction. The method of claim 1, Steel roll for steel, characterized in that three or more spinning grooves are formed on both ends of the cover portion as a fail-safe structure by a heating mold. The method of claim 6, The spinning groove Passage portions formed in the shape of a groove in the longitudinal direction of the cover portion at both ends of the cover portion; A circumferential hole portion open to one side toward the passage portion; Steel roll for steel, characterized in that it has. The method of claim 6, The heating mold A hollow disk-shaped body having a center hole insertable at an end of the iron core portion so as to be mounted on both sides of the iron core portion by using a plurality of tightening means including a tension bolt and a nut to pressurize and heat both end faces of the cover portion; A plurality of mold protrusions arranged along a radial direction at one side of the hollow disk-shaped body and protruding in a fixed or separate assembly type; Tension bolt fastening bolt mounting portion corresponding to the tightening means is fixed while maintaining a distance in the circumferential direction from the circumferential surface of the hollow disk-shaped body; Three or more electrothermal heater parts installed on the other side of the hollow disk-shaped body; Steel roll for steel, characterized in that it comprises. In the manufacturing method of the rubber roll having at least one layer cover portion to surround the iron core portion, A first step of performing surface grinding and surface cleaning as a pretreatment process for the iron core; A second step of forming a primer layer by using a volatile surface treatment agent and an adhesion promoter for rust prevention or fixation; A third step of forming a first adhesive layer on the primer layer using an intermetallic rubber adhesive; A fourth step of forming a soft rubber layer by winding and vulcanizing the soft rubber sheet on the first adhesive layer in a taping manner; A fifth step of forming a second adhesive layer on the soft rubber layer using an inter-rubber resin adhesive; A sixth step of forming a reinforcing layer having an integral mesh hole and an embossing structure on the second adhesive layer; A seventh step of forming a third adhesive layer on the reinforcement layer by using an inter-rubber resin adhesive; An eighth step of winding the reinforcing rubber sheet on the third adhesive layer in a taping manner and vulcanizing to form a reinforcing rubber layer; Include, The soft rubber layer, Based on 100% by weight of raw rubber, 8.5 wt% chlorosulfated polyethylene synthetic rubber, 2.5 wt% chlorinated polyethylene resin, 2.5 wt% lead monoxide for rubber, 1.5 wt% particle size (nm) 26-30 high wear resistant carbon black, 1.2 wt% dispersant, 3.6 wt% particle size (nm) 61-100 heavy reinforcing carbon black, 0.44 wt% adhesion promoter for hydrogen peroxide cured rubber, 0.2 wt% magnesium oxide, 0.28 wt% phenolic antioxidant, 0.15 wt% octamine ( Antioxidants), 0.7 wt% rubber paraffin chloride, 0.9 wt% dioctyl phthalate (rubber plasticizer), 0.03 wt% stearic acid (rubber emulsifier), 0.3 wt% antifoaming agent, It is blended with raw material rubber and vulcanized at a temperature of 150 ° C. for 8 hours to form The reinforced rubber layer, Based on 100% by weight of raw rubber, 10% by weight natural rubber, 2% by weight styrene butadiene rubber, 4.5% by weight particle size (nm) 26-30 high wear-resistant carbon black, 0.7% by weight zinc oxide, 0.3% by weight phenolic antioxidant, 0.1% by weight Urethane rubber with a hardness of 90%, 0.2% by weight magnesium carbonate, 0.9% by weight ethylene copolymer such as ethylene-propylene or ethylene propylene-diene units, 1.6% by weight dioctyl phthalate (rubber plasticizer), 0.03% by weight Stearic acid (rubber emulsifier), 0.4% by weight of antifoaming agent, 0.12% by weight of azole vulcanization accelerator, 0.09% by weight of aromatic process oil, 0.2% by weight of first thiuram vulcanization accelerator, 0.14% by weight of second Thiuram vulcanization accelerator, 0.5 wt% sulfur, 3 wt% sulfenamide vulcanization accelerator, 0.15 wt% dispersant, A method for producing a rubber roll for steelmaking, which is blended with raw material rubber and vulcanized at a temperature of 160 ° C. for 6 hours. 10. The method of claim 9, In the first step As the molten alumina oxide or corundum having an aluminum oxide content of 96% by weight, using a synthetic abrasive having a granule diameter of 0.4 to 1.6 mm, the surface grinding of the core portion proceeds while forming a roughness (Rz) depth of 40 to 60 µm. Method for producing a rubber roll for steel, characterized in that. 10. The method of claim 9, In the first step Steel cleaning rolls characterized in that the surface of the iron core portion is cleaned by dipping for 24 hours using a surface cleaner having a composition of 8 to 9% by weight hydrochloric acid, 70% by weight water, 21 to 22% by weight detergent. Manufacturing method. 10. The method of claim 9, A ninth step of pressing and heating both end surfaces of the cover part by using a heating mold having a tightening means and an electric heater after the eighth step to form a radial groove having three or more fail-safe structures; A tenth step of polishing the rubber surface of the cover part to form a shape corresponding to the use of the cover part from which the heating mold is separated; The manufacturing method of the steel roll for steel, characterized in that further progress.

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