KR100891196B1 - Method of casting using the natural flower - Google Patents

Abstract

The present invention relates to a casting method for casting castings that can be utilized as various ornaments using natural flowers grown in natural or horticultural farms, in particular, to reduce the time and manufacturing costs of the original model, and also to cast the castings. The present invention relates to a casting method using natural flowers, which can be easily and simply casted in large quantities to cast various kinds of ornaments by simplifying a process for improving the production efficiency.

Naturalization, Casting, Casting, Jewelry, Precision Casting, Investment, Firing, Flask, Vacuum Injection

Description

Casting method using natural flowers {Method of casting using the natural flower}

1 is a perspective view showing that the flowers are fixed to the bottom frame according to the present invention.

Figure 2 is a cross-sectional view showing a part of the flask covered with a flask according to an embodiment of the present invention.

3 is a cross-sectional view showing a part of the flask covered with the flask according to another embodiment of the present invention.

Figure 4 is a cross-sectional view showing a part of the cutting material is injected into the inside of the flask using a vacuum investment in accordance with the present invention.

5 is a cross-sectional view showing an internal configuration of a mold according to an embodiment of the present invention.

6 is a cross-sectional view showing an internal configuration of a mold according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10-base 14-support

15-retention model 20-flask

30-mold 31-casting space

32-Living space 33-Pathway

34-Inlet 40-Vacuum Injector

C-cutting area

The present invention relates to a casting method using natural flowers, and more particularly, to reduce the time and production costs for producing the original model using the natural flowers grown in natural or horticultural farms of the original model used for casting, and The present invention relates to a casting method using fresh flowers that can be easily and conveniently produced in large quantities in castings that can be utilized as various ornaments by simplifying the process.

In general, casting is a method of injecting molten metal into a mold and then molding the product to be made by using solidification of the metal into a final product at one time. In particular, casting is mainly used in the production of precious metal jewelry such as gold and silver.

Such casting is basically made in the order of the original model, the silicone mold molding, the silicon mold incision, the radiation model injection, the investment in wax-curing, firing, casting.

That is, the original model of the product to be made is molded using wax, wood, plastic, clay, etc., and the silicon mold is formed by applying the silicon to the original model, and when the molding of the silicon mold is completed, the original model is cut inside. To separate.

After separating the original model from the silicon mold, injection molding the same copy model as the original using wax or the like, and embedding the wax curie into the injection molded copy model, and the mold in which the copy model is buried is fired. Internal radiation model is removed.

Therefore, as the radiation model is removed through the firing, a casting space having the same shape as the original is formed inside the mold, and the casting of the product to be made is completed by pouring and solidifying the liquid metal in the casting space.

However, such a conventional casting method requires molding the same original model as the product to be made, and therefore requires a skilled skill having a high level of difficulty, and thus, there is a problem that a cost increase due to hiring skilled workers is inevitable.

In addition, since the same copy model as that of the original model must be injection molded, there is a complexity in the process and there is a limit that can be represented by the original model.

Furthermore, in the conventional casting method, the radiation model is often expanded during the sintering step, thereby damaging the inner surface of the mold, so that it is difficult to obtain high-fidelity jewelry. In order to prevent this, steam heat using a steam dewaxer, etc. Inconvenient processes also occurred, such as the need to remove the radiation model in advance.

Therefore, the present invention solves the above-mentioned problems by using the original flowers grown in natural or horticultural farms for the casting of ornaments, thereby reducing the occurrence of unnecessary time and cost in forming the original models. And, the purpose is to enable easy and simple mass production of various kinds of jewelry to simplify the process.

An object of the present invention, using the natural flowers grown in natural or horticultural farm as the original model required for casting, reduce the casting time, reduce the cost, and simplify the casting process that can be utilized as various ornaments through the simplification of the casting process The present invention provides a casting method using biochemicals that can be produced in large quantities.

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Still another object of the present invention is to provide a casting method using biochemical treatment, which can maximize production efficiency through cost reduction and process simplification.

The present invention for achieving the above object is a biochemical fastening step of fixing the natural flowers to the bottom frame;

Embedding the flask on the bottom frame to which the flowers are fixed, and filling the inside of the flask surrounding the flowers by injecting a liquid investment material, which is kneaded with quartz and limestone, in a vacuum state;

Firing the mold formed by solidifying the investment material in a firing furnace to form a casting space in the mold;

A casting step of pouring molten metal into the casting space formed inside the mold;

The casting is separated from the mold, and the finished casting is achieved by a finishing step of finishing by finishing.

Therefore, by using the natural flowers grown in natural or horticultural farms, which are essential for casting castings, the original model can be shortened and the manufacturing cost can be reduced.

In addition, by simplifying the casting process of castings that can be used as jewelry, the production efficiency that can produce large quantities of castings with a feeling of sophisticated naturalization is greatly improved.

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

1 is a perspective view showing that the flower is fixed to the bottom frame according to the present invention, it is shown that the flower is fixed to the top of the bottom frame consisting of a flooring, a protrusion, a support.

2 is a cross-sectional view showing a portion of the flask covered with the flask according to an embodiment of the present invention, the flower is fixed to the floor frame consisting of the flooring, the protrusions, the support portion, the planting material is fixed to the floor frame The flask is covered and wrapped so that it can be injected and filled.

3 is a cross-sectional view showing a portion of the flask covered with the flask according to another embodiment of the present invention, the bottom of the flooring, the protrusion, the support, the stay model is fixed to the bottom frame is fixed, the floor is fixed It is shown that the flask is covered by filling the mold with filling material.

4 is a cross-sectional view of a part of the investment material is injected into the flask using a vacuum investor according to the present invention in a cross-sectional view, and fixed to the bottom frame is covered with the flask inside the vacuum tank in a vacuum state, the vacuum tank It is shown that by injecting a buried material in the flask in order to combine the stirring vessel in which the buried material is accommodated in the upper portion of the flask.

5 is a cross-sectional view showing the internal configuration of the mold according to an embodiment of the present invention, it is shown that the plasticization and the support is removed by the firing, the casting space and the passage connected to the inlet is formed in the interior of the mold.

Figure 6 is a cross-sectional view showing the internal configuration of the mold according to another embodiment of the present invention, the plasticization, the support portion, the retention model is removed by the firing is formed in the casting space, the passage, the retention space connected to the inlet of the mold It is showing.

That is, as shown in Figures 1 to 2, in order to cast the castings utilized as various ornaments using the casting method using the flowers according to the present invention, first, the flowers grown in a natural state or horticulture farm through the step of fixing flowers It will be fixed to the bottom frame (10).

The bottom frame 10 has a configuration in which a side wall 12 for supporting the flask 20 to be described later is formed on the circular bottom material 11, and a triangular pyramid-shaped protrusion 13 is formed at the center of the bottom material 11. The protrusion 13 is provided with a supporting portion 14 to fix the flower on the upper end of the supporting portion 14.

The protrusion 13 has a triangular pyramid shape because the shape of the inlet 34 to which molten metal is supplied is formed in a funnel shape to facilitate pouring of the molten metal.

In addition, the support part 14 is provided separately on the protrusion 13 instead of integrally, so that when the mold 30 is fired, the bottom member 11 is separated from the mold 30 and reused, and the support part 14 is burned. In order to remove the burned together with the firing step.

Therefore, the support 14 is mainly molded using hard wax, and in addition to this, the retention model 15 to be described below is also molded with the same material so that the support 14 can be removed in the firing step. It is preferable.

As a method for fixing the flowers on the support 14, it is common to use a string, but it is preferable to wax the flowers on the upper end of the support 14 using an electric iron.

The bottom frame 10 including the bottom 11, the side wall 12, the protrusion 13 and the support 14 so that the flowers can be fixed through the preferred embodiment is a leaf, such as rose, rose of sharon Suitable for general casting method using wide flowers.

On the contrary, the configuration of the bottom frame 10 suitable for the precision casting method using the flowers with small leaves, thin, fine and fine leaves is as follows. In this regard, the applicant has filed Korean Patent No. 10-2003-29154.

That is, the bottom frame 10 suitable for the precision casting method, as shown in Figure 3, the support 14 having a length of 10mm to 25mm and the volume of 15mm to 500mm and the volume of the support 14 It is a structure including the retention model part 15 which has a volume more than twice.

In more detail, the support portion 14 having a length of 10 mm to 25 mm and a volume of 15 mm to 500 mm is formed on the upper portion of the protrusion 13 protruding from the center of the flooring 11. The spherical retention model portion 15 is formed on the (14) with a volume of 10 times or more, and the wax is fixed on the upper end of the support portion 14 on which the retention model portion 15 is formed.

The retention model 15 is formed on the support 14 so that the retention space 32 is formed in the mold 30, and the retention model 15 is formed in a spherical shape so as to facilitate manufacturing. In order to reduce the risk of breakage of the mold 30, the selection of the retention space 32 in the casting step should be smooth.

In addition, this spherical retention model 15 also serves to conveniently adjust the volume ratio of the support 14 and the retention model 15, which are the core of the precision casting method.

Here, the volume of the support 14 and the volume of the retention model 15 may be 1:10 to 1: 350, preferably 1:20 to 1: 250. The ratio obtained empirically through repeated experiments on precious metals such as silver, platinum and various metals and alloys.

The "preferred" means that the molten metal located in the passage 33 of the mold 30 that is in direct contact with the outside air in the casting step to be described later is the difference in shrinkage due to the differential cooling with the residence space 32 It is broken and is suitable for breaker to heat conduction with the outside.

In particular, when the volume of the support 14 and the retention model 15 are 1:20 to 1: 250, the probability of cutting the molten metal located in the passage 33 of the mold 30 is 90% or more.

Therefore, due to the cutting of the molten metal located in the passage 33, it is possible to obtain the effect that the molten metal inside the remaining cut portion (C) is slowly cooled compared to the case otherwise.

Accordingly, the molten metal supplied from the staying space 32 is smoothly supplied to the bottom of the casting space 31 of the mold 30, so that casting of the casting which can be utilized as an ornament having a feeling of dense and fine naturalization is possible.

Here, the length and volume of the dimension specification of the support 14 described above are intended to encompass all of the cross-sectional formation of the support 14 is circular, square, triangular, indefinite, or the like.

For example, when the support 14 has a cylindrical shape, the support 14 has a volume of about 15 mm to 500 mm by a length of 10 mm to 25 mm and a diameter of 1.5 mm to 5 mm.

That is, the mold 30 obtained by the bottom frame 10 used in the precision casting method is formed as described above, the funnel-shaped inlet 34 and the passage 33 and the retention space 32 connected thereto. It will be able to cast precisely using small, thin, fine and fine flowers.

The investment step is a step of filling the flask 20 on the bottom frame 10 in which the flowers are wax-fixed to the top, and filling the inside of the flask 20 surrounding the flowers by injecting the investment material, the flask 20 is the outer tube ( 21 and the inner barrel 22, and the inner barrel 22 is formed with a fine hole 23.

The fine hole 23 formed in the inner barrel 22 affects the mold 30 made of a buried material that forms fine pores by the vacuum suction force of the casting machine 50 used in the subsequent casting step of the casting space 31. The molten metal is to be supplied to the smallest detail, thereby inducing the compactness of the casting tissue.

The buried material filling the inside of the flask 20 is a liquid that kneaded with quartz and limestone to endure at high temperature with water, more preferably the same ratio of quartz and limestone, kneaded with water by adding a curing agent or the like The liquid is used.

As a method of pouring the investment material into the flask 20 and buried therein, there is a method of manually pouring the liquid investment material into the flask 20, and more preferably, as shown in FIG. 4, the vacuum investment device 40. There is a method of injection in a vacuum state using.

In other words, the method of injecting the investment material using the vacuum investing machine 40 is fixed in the vacuum tank 41 in the vacuum state, the bottom frame 10 is covered with the flask 20, the internal air is discharged to maintain a vacuum state The upper part of the vacuum tank 41 is coupled to the stirring barrel 42 in which the investment material is accommodated to inject the liquid investment material into the flask 20.

It is shown that the vacuum investing machine 40 is equipped with a water hose 43 for kneading by supplying water to the investment material contained in the stirring barrel 42 and an agitator 44 for stirring the supplied water and investment material. have.

Therefore, the investment material kneaded into the liquid phase through the above configuration is applied to the flask 20 using the injection hose 45 while maintaining a constant pressing force while receiving little resistance of air in the process of being injected into the flask 20. It will be injected to fill the interior evenly with the flowers.

The method of injecting the investment material using the vacuum investment device 40 is suitable for both general casting and precision casting, and in particular, the investment material can be evenly injected to the fine part of the flower, and bubbles can be suppressed.

In the firing step, the investment material is left in the air, and the mold 30 formed by solidifying in the flask 20 is separated from the bottom frame 10 and then fired in a firing furnace to form the casting space 31 in the mold 30. In the forming step, burn the fresh flowers in the kiln to form a casting space 31 in the mold (30).

To this end, the firing step according to the present invention first separates the flask 20 and the mold 30 from the bottom frame 10, and then, in the state in which the separated flask 20 and the mold 30 are accommodated in the firing furnace, The temperature is maintained at 600 ° C. to 800 ° C. and heated for 3 to 6 hours.

If the temperature of the kiln is less than 600 ℃ the removal time of the flowers may exceed 6 hours, if the temperature exceeds 800 ℃ the mold 30 can burn at a high temperature in the state maintained It is preferable to fire the mold 30 for a predetermined time.

Therefore, the flowers that were buried in the mold 30 and the support 14 and the retention model 15 fixed thereto are gradually removed by heating while being heated in a 600 ° C. to 800 ° C. firing furnace for 3 to 6 hours. As a result, the casting space 31 is formed in the mold 30 in the same or extremely similar manner as that of natural flowers.

The casting space 31 is a funnel-shaped inlet through the retention space 32 and the passage 33 formed in the mold 30 as the support portion 14 and the retention model 15 are removed with live flowers. It is natural to be connected with (34).

The casting step is to put the mold 30 on the casting machine 50 and pour the molten metal containing precious metals such as gold, silver, platinum and various metals and alloys to cast a casting that can be utilized as various ornaments, The molten metal is poured continuously without interruption to ascend to the inlet of the mold 30.

In this case, when the injection time is long and injected at a low temperature, the casting space 31 may be solidified without filling, and if it is too fast, erosion, rough surfaces, and many shrinkages of the mold 30 may occur. (50) is used to pour the molten metal.

That is, as shown in FIG. 5, when molten metal is poured continuously without interruption in the state in which the mold 30 is placed upside down so that the inlet 34 faces upward, the inlet 34 is supplied from the inlet 34. The melted metal is gradually filled with the casting space 31 while passing through the passage 33, and the casting of the casting through the general casting method is performed by leaving it in the air to harden it.

On the other hand, the precision casting method, as shown in Figure 6, when the mold 30 in the casting machine 50 is placed upside down so that the inlet 34 facing upwards, continuously pouring the molten metal without interruption, the mold 30 Due to the shape and volume ratio of the passage 33 and the retention space 32, the molten metal located at the inlet 34 in direct contact with the atmosphere is rapidly cooled and contracted.

On the contrary, the molten metal located in the retention space 32 cools down gradually, resulting in a difference in cooling shrinkage rate, and thus, the molten metal located in the passage 33 is cut off to generate the cut portion C.

That is, the thermal conductivity is significantly lowered between the dissolved metals above and below the cutting site C due to the cutting site C.

Therefore, since the upper and lower cutting portions (C) of the molten metal are not connected to the molten metal having high thermal conductivity and are connected only through the investment material having low thermal conductivity, the lower portion of the cutting portion (C) is gradually cooled as the thermal conductivity drops. .

Accordingly, in the casting space 31 of the mold 30 for casting the desired casting, even though cooling shrinkage occurs at the end of the casting, molten metal is continuously supplied from the staying space 32, thereby providing uniformity through disconnection and retention effects. High quality castings with one surface can be obtained.

The finishing step is to separate the casting from the mold 30, and to remove the impurities attached to the casting, in order to separate the casting from the mold 30 the flask 30 to the point where the casting is cast flask After removing from (20), the casting exposed to the outside is taken out and gradually cooled in the air.

The cooled casting removes impurities attached using a known grinding machine, attaches pins and the like to make use of jewelry, and processes and attaches various accessories such as jewelry on the surface as necessary.

In addition, it is possible to extend the life of the casting at the same time to improve the utility as jewelry by plating the surface according to the buyer's preference.

Therefore, through the casting method according to the present invention consisting of a series of steps as described above it is to precisely cast a variety of castings having the same or very similar feeling to the raw flowers to provide as an ornament.

According to the configuration of the present invention as described above, by using the natural flowers grown in natural or horticultural farms as the original model required for casting of casting, it is possible to enjoy the effect of reducing the period and cost for forming a separate original model .

In addition, since the investment material is injected in a vacuum state, the investment material can be injected evenly to the minute parts of the flowers, and there is an effect of suppressing the generation of bubbles.

Furthermore, this has the effect of simplifying the casting process and reducing the casting cost to easily and simply produce large quantities of castings that can be utilized as various ornaments.

Therefore, it is a very useful invention, such as to maximize the production efficiency through the cost reduction and the simplification of the process of manufacturing castings utilized as various ornaments as described above.

Claims (5)

delete delete delete delete A naturalization fixing step of fixing the flowers to the top of the bottom frame including a support having a length of 10 mm to 25 mm and a volume of 15 mm to 500 mm and a retention model having a volume of at least 10 times the volume of the support part; Embedding the flask on the bottom frame to which the flowers are fixed, and filling the inside of the flask surrounding the flowers by injecting a liquid investment material, which is kneaded with quartz and limestone, in a vacuum state; Firing the mold formed by solidifying the investment material in a firing furnace to form a casting space in the mold; The mold is placed on a casting machine, poured with molten metal, left in the air to harden, and the casting located in the passage is broken due to the difference in cooling rate between the casting part due to the volume difference between the passage of the mold and the residence space. A casting step of blocking external and thermal conduction; Separating the casting from the mold, the casting method using the raw flowers, characterized in that the finishing step of finishing the finished casting by finishing.

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