KR102502493B1 - Roll for impregnation device and impregnation device comprising the same - Google Patents

Abstract

A roll for an impregnation device having a low specific gravity and excellent wear resistance and corrosion resistance is provided. One embodiment of the present invention provides a roll for an impregnation device consisting of: 6.0 wt% or more and 7.0 wt% or less of zinc; greater than 2.50 wt% and up to 3.0 wt% of magnesium; 0.25 wt% or more and 0.35 wt% or less of chromium; 1.0 wt% or more and 2.0 wt% or less of copper; 0.1 wt% or more and 0.5 wt% or less of silicone; greater than 0 wt% and up to 0.5 wt% of manganese; remainder aluminum; and impurities.

Description

Roll for impregnation device and impregnation device including the same {ROLL FOR IMPREGNATION DEVICE AND IMPREGNATION DEVICE COMPRISING THE SAME}

The present invention relates to a roll for an impregnation device, and more particularly, to a roll for an impregnation device and an impregnation device including the same.

Impregnation refers to use when a liquid substance is infiltrated into a cavity structure, and generally means to fill the gaps in the structure of fabric, paper, wood, winding cotton, etc. with resin. do.

Meanwhile, an impregnation device used for the purpose of impregnating an object with a liquid material includes rolls for various purposes. For example, a roll for an impregnation device may include a pair of rolls spaced apart from each other to form a film by passing a resin therebetween when the liquid material is a resin; A winding roll for winding an object impregnated with a liquid substance; an unwinding roll which brings the resin into contact with the unwound object; etc. may be included.

In general, these rolls for impregnation devices are made of stainless (SUS304) or iron (SS400) and are characterized by heavy loads of 7.98 and 7.85, respectively. The impregnation device is assembled with about 30 to 40 parts and operated at the same time. A tremendous force is applied to the column, base, bed, frame, etc. that support the roll for the impregnation device, up to vertical, horizontal and torsional loads, and long-term There was a problem of damaging the product due to deformation during use.

In addition, as the specifications of parts including columns, bases, beds, frames, etc. increase, manufacturing costs increase, and attention to safety accidents in product management for assembly is continuously required.

In order to solve these problems, aluminum alloy materials are used to maintain the strength of existing products, improve durability, do not deform even after long-term use, reduce manufacturing costs, and continue research on safety accidents that can be prevented in advance. is being done with

An object of the present invention is to provide a roll for an impregnating device which simultaneously improves wear resistance and corrosion resistance.

Another object of the present invention is to provide a roll for an impregnation device having a strength equivalent to that of existing products and having a lower specific gravity than existing products.

Another object of the present invention is to provide a roll for an impregnation device that is resistant to torsional load and can be used for a long period of time.

Another object of the present invention is to provide an impregnation device including the roll for the impregnation device.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.

One embodiment of the present invention for achieving the above object, zinc 6.0% by weight or more and 7.0% by weight or less; greater than 2.50% by weight of magnesium and up to 3.0% by weight; 0.25% by weight or more and 0.35% by weight or less of chromium; 1.0% by weight or more and 2.0% by weight or less of copper; 0.1% by weight or more and 0.5% by weight or less of silicone; greater than 0 manganese and up to 0.5% by weight; remainder aluminum; and impurities; It provides a roll for an impregnation device consisting of.

Specifically, the impurities are, based on the total weight of the roll for the impregnation device, greater than 0 iron 0.4% by weight or less; greater than 0 and up to 0.2% by weight of titanium; and greater than 0 and up to 0.2% by weight of zirconium; can be made with

According to another embodiment of the present invention, the specific gravity of the roll for the impregnation device may be 3.0 or less, specifically 2.75 or less.

According to another embodiment of the present invention, the weight ratio of silicon and magnesium (silicon:magnesium) may be 1:2 to 1:10, specifically 1:5 to 1:10.

Another embodiment of the present invention for achieving the above object may provide an impregnation device including a roll for the impregnation device.

According to another embodiment of the present invention, the shaft for supporting the roll for the impregnation device (Shaft); It is possible to provide an impregnation device further comprising a.

The solution to the above problems does not enumerate all the features of the present invention. Various features of the present invention and the advantages and effects thereof will be understood in more detail with reference to the following specific examples.

According to one aspect of the present invention, it can be inferred that it is easily applicable to an anodizing process, which is a process of forming an oxide film on the surface to prevent oxidation and increase the durability of an aluminum alloy due to its excellent wear resistance and corrosion resistance.

In addition, according to another aspect of the present invention, it is possible to minimize the force applied to other parts of the impregnation device supporting the roll for the impregnation device because the specific gravity is low compared to the roll for the impregnation device made of a material of stainless steel or iron that is conventionally used. can Accordingly, by minimizing the deformation of the other parts, it is possible to improve the overall durability of the impregnation device. That is, according to another aspect of the present invention, by improving the durability of the impregnation device, there is no deformation of the impregnation device even when used for a long period of time, and manufacturing costs can be reduced and safety accidents can be prevented in advance.

In addition to the above effects, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

Hereinafter, each configuration of the present invention will be described in more detail so that those skilled in the art can easily practice it, but this is only one example, and the scope of the present invention is Not limited.

One embodiment of the present invention, zinc 6.0% by weight or more and 7.0% by weight or less; greater than 2.50% by weight of magnesium and up to 3.0% by weight; 0.25% by weight or more and 0.35% by weight or less of chromium; 1.0% by weight or more and 2.0% by weight or less of copper; 0.1% by weight or more and 0.5% by weight or less of silicone; greater than 0 manganese and up to 0.5% by weight; remainder aluminum; and impurities; It provides a roll for an impregnation device consisting of. According to one aspect of the present invention, by combining the optimal composition and its content, wear resistance and corrosion resistance are very excellent, so that it is also suitable for the anodizing process, which is a process of forming an oxide film on the surface to prevent oxidation and increase the durability of an aluminum alloy. can be easily applied. In addition, according to another aspect of the present invention, the force applied to other parts of the impregnation device supporting the roll for the impregnation device can be minimized due to the low specific gravity compared to the roll for the impregnation device made of a material of stainless steel or iron that is conventionally used. there is. Accordingly, by minimizing the deformation of the other parts, it is possible to improve the overall durability of the impregnation device. That is, according to another aspect of the present invention, by improving the durability of the impregnation device, there is no deformation of the impregnation device even when used for a long period of time, and manufacturing costs can be reduced and safety accidents can be prevented in advance.

Hereinafter, the configuration of the present invention will be described in more detail.

1. Roll for impregnation unit

zinc

The roll for an impregnation device according to the present invention contains zinc capable of preventing corrosion of iron, contributing to high durability, and preventing deformation even when used for a long period of time.

Specifically, the zinc content is 6.0% by weight or more and 7.0% by weight or less, more specifically 6.0 to 6.5% by weight, more specifically 6.1 to 6.4% by weight, more specifically 6.1 to 6.1% by weight based on the total weight of the roll for the impregnation device. 6.3 wt%, more specifically 6.2 to 6.3 wt%. When the content of zinc is less than the above range, the strength of the roll for an impregnation device may not be sufficiently high, and corrosion by iron may easily progress, resulting in low corrosion resistance performance. When the content of zinc exceeds the above numerical range, the content of magnesium is relatively low and the specific gravity of the roll for an impregnation device is increased, so weight reduction may not be achieved and weldability may be deteriorated.

magnesium

The roll for an impregnation device according to the present invention realizes weight reduction of the roll for an impregnation device by lowering the specific gravity of the roll for an impregnation device, and contains magnesium capable of improving weldability in combination with silicon.

Specifically, the magnesium content may be greater than 2.5% by weight and 3.0% by weight or less, more specifically 2.60 to 2.90% by weight, more specifically 2.65 to 2.90% by weight based on the total weight of the roll for the impregnation device. It may be 2.70 to 2.90% by weight, more specifically 2.75 to 2.85% by weight, and more specifically 2.80 to 2.85% by weight. When the content of magnesium satisfies the above numerical range, the weight of the roll for the impregnation device and the weldability between the roll and the shaft may be improved.

chrome

The roll for an impregnation device according to the present invention forms a dense passivation film on its surface and contains chromium that contributes to corrosion resistance to the external environment.

Specifically, the content of chromium may be 0.25% by weight or more and 0.35% by weight or less, more specifically 0.27 to 0.33% by weight, more specifically 0.28 to 0.32% by weight based on the total weight of the roll for the impregnation device. It may be, more specifically 0.29 to 0.31% by weight. If the chromium content is less than the above numerical range, the corrosion resistance of the roll for impregnation device may not be sufficiently improved, and if the chromium content exceeds the above numerical range, a passivation film may be formed too thick.

copper

The roll for an impregnation device according to the present invention contains copper to adjust the thermal conductivity to an appropriate level.

Specifically, the copper content may be 1.0 wt% or more and 2.0 wt% or less, more specifically 1.0 to 1.8 wt%, more specifically 1.0 to 1.5 wt%, more specifically, based on the total weight of the roll for the impregnation device. 1.0 to 1.4% by weight, more specifically 1.0 to 1.3% by weight, more specifically 1.0 to 1.2% by weight. When the copper content is within the above numerical range, the thermal conductivity of the roll for an impregnation device may be adjusted to an appropriate level. If the thermal conductivity of the roll for the impregnation device is too high, it may be unsuitable for the purpose of the roll for the impregnation device.

silicon

The roll for an impregnation device according to the present invention includes silicon in combination with magnesium to improve welding between the roll and a shaft supporting the roll.

Specifically, the content of the silicon may be 0.1% by weight or more and 0.5% by weight or less based on the total weight of the roll for the impregnation device, more specifically 0.15 to 0.45% by weight, more specifically 0.20 to 0.40% by weight, more specifically It may be 0.25 to 0.35% by weight, more specifically 0.28 to 0.32% by weight. When the silicon content is less than the above numerical range, weldability between the roll and the shaft may not be sufficiently improved, and when the silicon content exceeds the above numerical range, deformation of the roll may occur due to the bulkiness of silicon itself.

According to another embodiment of the present invention, the weight ratio of silicon and magnesium (silicon:magnesium) may be 1:2 to 1:10, specifically 1:5 to 1:10, and more specifically 1: 7 to 1:10, more specifically 1:8 to 1:10, and more specifically 1:9 to 1:10. When the weight ratio of silicon to magnesium is within the above numerical range, weldability between the roll and the shaft is sufficiently improved and deformation of the roll can be effectively prevented.

manganese

The roll for an impregnation device according to the present invention improves strength and wear resistance of the roll for an impregnation device, and contains manganese that effectively prevents the generation of bubbles or micropores in the roll for an impregnation device.

Specifically, the manganese content may be greater than 0 and 0.5% by weight or less, greater than 0 and 0.4% by weight or less, more specifically 0.01 to 0.4% by weight, based on the total weight of the roll for the impregnation device. It may be 0.02 to 0.3% by weight, and may be more specifically 0.02 to 0.1% by weight. If the manganese content is less than the above numerical range, the strength and wear resistance of the roll may not be sufficiently improved, or bubbles or micropores may be excessively generated in the roll, and if the manganese content exceeds the above numerical range, the corrosion resistance of the roll may not be sufficiently improved. may not be

aluminum

The roll for an impregnation device according to the present invention lowers the specific gravity and includes the remainder of aluminum having excellent wear resistance and corrosion resistance due to a film formed through anodizing.

According to one embodiment of the present invention, the aluminum content may be the remainder other than the above-described composition, or the remainder other than the above-described composition and impurities to be described later. The aluminum content may be 85 or more and less than 90% by weight, specifically 86 or more and less than 90% by weight, more specifically 87 or more and less than 90% by weight, more specifically 88 or more based on the total weight of the roll for the impregnation device. to less than 90% by weight. When the aluminum content is within the above numerical range, corrosion resistance and abrasion resistance of the roll for the impregnating device can be sufficiently achieved.

impurities

Impurities according to the present invention are greater than 0 and 0.4% by weight or less of iron based on the total weight of the roll for the impregnation device; greater than 0 and up to 0.2% by weight of titanium; and greater than 0 and up to 0.2% by weight of zirconium; can be made with When the content of iron in the impurities exceeds the above numerical range, the impregnating device roll may be easily corroded and corrosion resistance performance may be deteriorated.

The specific gravity of the roll for an impregnation device according to an embodiment of the present invention may be 3.0 or less, specifically 2.75 or less. As the material of the roll for the impregnation device satisfies the above composition range, the weight of the roll for the impregnation device can be reduced because the specific gravity is further lowered compared to a conventional roll made of iron or stainless material. For example, the specific gravity of the roll for the impregnation device can be analyzed using the Archimedes principle that when a specific solid is put into a liquid, the weight of the solid becomes as light as the weight of the removed liquid.

2. Impregnation device

Another embodiment of the present invention may provide an impregnation device including a roll for the impregnation device.

The impregnation device according to the present invention may further include a shaft supporting the roll for the impregnation device. Specifically, the shaft may be connected to the roll for the impregnation device. When the composition and content of the roll for the impregnation device satisfy the above description, weldability between the shaft and the roll for the impregnation device can be further improved.

According to another embodiment of the present invention, the roll for the impregnation device is a pair of rolls spaced apart from each other to form a film by passing the resin therebetween when the liquid material is a resin; A winding roll for winding an object impregnated with a liquid substance; and an unwinding roll bringing the resin into contact with the unwound object. It may be any one or more selected from the group consisting of.

The resin is not particularly limited to a resin having fluidity, and may vary depending on the use of the final product, specification environment, and required product characteristics. For example, the resin may be a thermosetting resin such as polyurethane, epoxy resin or unsaturated polyester; or thermoplastic resins such as polyamide; can be

Hereinafter, an embodiment of the present invention will be described in detail so that those skilled in the art can easily practice it, but this is only one example, and the scope of the present invention is Not limited.

[Manufacture Example 1: Manufacture of Rolls for Impregnation Apparatus]

<Comparative Example 1: A6061 aluminum alloy>

A commercially available aluminum alloy (A6061) was prepared as shown in Table 1 below.

<Comparative Example 2: A7075 aluminum alloy>

A commercially available aluminum alloy (A7075) was prepared as shown in Table 1 below.

<Example 1: Production of a roll for impregnation device of the present invention>

After preparing an aluminum alloy having the content of the elements shown in Table 1 using a conventional centrifugal casting method, the aluminum alloy was heated at 500 ° C. to perform solution treatment.

Unit: % by weight Comparative Example 1 Comparative Example 2 Example 1 ingredient A6061 A7075 the present invention Al 97.90 90.00 89.35 Zn ㅡ 5.60 6.20 Mg 1.00 2.50 2.80 Cr 0.20 0.23 0.30 Cu 0.28 1.60 1.00 Si 0.60 - 0.30 Fe 0.01 0.02 0.01 Mn 0.01 0.01 0.02 Ti - 0.02 0.01 Zr - 0.02 0.01

[Experimental Example: Evaluation of physical properties of aluminum alloy]

The physical properties of the aluminum alloys of Comparative Examples 1 and 2 and Example 1 were evaluated by the following measurement method.

1) Wear resistance

According to the method of ASTM G65-94, after performing an abrasion test on each of the aluminum alloy specimens of Comparative Examples 1 and 2 and Example 1, the abrasion amount (mg) is shown in Table 2 below. Specifically, a grinding wear tester was used as a grinding wear test equipment, and the grinding wear test was performed for 10 minutes under conditions of a sand ejection speed of 300 to 400 g/min, an applied load of 130 N, and a rotational speed of 200 rpm.

2) Corrosion resistance

According to the method of ASTM G48 A, the aluminum alloy specimens of Comparative Examples 1, 2 and Example 1 were immersed in 6% iron chloride solution (6% FeCl) for 72 hours at room temperature, respectively, and then the weight loss (g / cc) is shown in Table 2 below.

evaluation items unit Comparative Example 1 Comparative Example 2 Example 1 wear resistance Wear amount (mg) 80 70 30 corrosion resistance Weight reduction (g/cc) 0.15 0.20 0.05

Referring to Table 2, it can be seen that Example 1 has excellent wear resistance and corrosion resistance as well as significantly less abrasion compared to Comparative Examples 1 and 2, and also significantly less weight loss with respect to the iron chloride solution.

Considering the above experimental results, when the roll for an impregnation device is constructed using the aluminum alloy according to an embodiment of the present invention, the wear resistance and corrosion resistance are very excellent to prevent oxidation and to increase the durability of the aluminum alloy by oxidation on the surface. It can be inferred that it can be easily applied to the anodizing process, which is a process of forming a film. In addition, according to another aspect of the present invention, the force applied to other parts of the impregnation device supporting the roll for the impregnation device can be minimized due to the low specific gravity compared to the roll for the impregnation device made of a material of stainless steel or iron that is conventionally used. there is. Accordingly, by minimizing the deformation of the other parts, it is possible to improve the overall durability of the impregnation device. That is, according to another aspect of the present invention, by improving the durability of the impregnation device, there is no deformation of the impregnation device even when used for a long period of time, and manufacturing costs can be reduced and safety accidents can be prevented in advance.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concept of the present invention defined in the following claims are also present. It falls within the scope of the right of invention.

Claims (8)

6.0 to 6.5% by weight of zinc;
greater than 2.5% by weight of magnesium and up to 3.0% by weight;
0.25% by weight or more and 0.35% by weight or less of chromium;
1.0% by weight or more and 2.0% by weight or less of copper;
0.1% by weight or more and 0.5% by weight or less of silicone;
greater than 0 manganese and up to 0.4% by weight;
remainder aluminum; and
impurities; consisting of
Rolls for impregnation units.
According to claim 1,
The impurity is
Based on the total weight of the roll for the impregnation device,
greater than 0 and up to 0.4% by weight iron;
greater than 0 and up to 0.2% by weight of titanium; and
Zirconium greater than 0 and less than or equal to 0.2% by weight; be made of
Rolls for impregnation units.
According to claim 1,
Rolls for impregnation units with a specific gravity of 3.0 or less.
According to claim 3,
Rolls for impregnation units with a specific gravity of 2.75 or less.
According to claim 1,
The weight ratio of the silicon and the magnesium (silicon: magnesium) is 1:2 to 1:10,
Rolls for impregnation units.
According to claim 5,
The weight ratio (silicon: magnesium) of the silicon and the magnesium is 1:5 to 1:10,
Rolls for impregnation units.
An impregnation device comprising the roll for an impregnation device according to any one of claims 1 to 6.
According to claim 7,
a shaft supporting the roll for the impregnation device; Including more,
impregnation device.