KR101582933B1 - Machine for casting and method using the same - Google Patents

Abstract

Disclosed are a casting manufacturing device and a casting manufacturing method using the same. The casting manufacturing device comprises: a first mixer part adding a first additive, of which a weight is lighter than the weight of a casting material, to the casting material to mix the additive with the material; a second mixer part adding a second additive, of which a weight is lighter than the weight of the first additive, to the casting material containing the first additive to mix the additive with the material; and a casting forming part injecting the casting material, containing the second additive, into an inner space of a cast to manufacture a casting. As such, the present invention is able to provide a casting, having more excellent cohesion and solidarity than an existing casting, and safely manufacture the casting by preventing oxidization of the casting even if the casting material has a risk of exploding in a dust state. Moreover, manufacturing time is able to be shorter than an existing manufacturing time, thus increasing productivity per time.

Description

TECHNICAL FIELD The present invention relates to a casting apparatus and a casting method using the casting apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casting production apparatus and a casting production method using the same, and more particularly, to a casting production apparatus using a dust-type casting material containing sodium silicate and a casting production method using the casting production apparatus.

Soluble silicates are one of the oldest and most friendly inorganic compounds. The commercial start of sodium silicate (sodium silicate) was in 1818, but the early development of soluble silicates was due to the relatively simple manufacture of sodium silicate products dating back to the ancient Phoenician era. The so-called water glass is mostly sodium silicate, but its composition is not constant.

This sodium silicate is widely used in civil engineering work because it can solidify pore - rich soil structure by chemical reaction. It is also used as an adhesive for paper tubes, lumber and various other materials, and is used as a de-inking, sizing agent, coating agent and bleaching agent in the paper and paper industries. It is also used as a liquid or dried granule in many synthetic detergents.

On the other hand, sodium silicate used in various industrial fields is a method of manufacturing a casting containing sodium silicate by using a press casting process by collecting pieces of sand casting sand or small pieces of metal used for casting do.

However, in such a casting manufacturing method, when the manufacturing time is prolonged, the hardness of the manufactured casting is weakened, and the quality of the manufactured casting is deteriorated or the production is not smooth.

In addition, when dust-type casting materials are used, there is a risk of explosion and safety problems may arise.

Accordingly, there is a need for research and development of a casting production method capable of shortening the casting time and producing a casting having a cohesive force and a bonding force, which are safe in the manufacturing process.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a casting method, in which a casting material in a dust form is mixed with an additive and is then subjected to pressure to improve cohesion and bondability of the casting, The present invention provides a casting production apparatus and a casting production method using the casting production apparatus, which are capable of forming a film to prevent oxidation and shortening the time for fixing the shape of the casting.

In order to achieve the above object, a casting apparatus according to an embodiment of the present invention is characterized in that a first additive having a weight less than the weight of a casting material used for producing a casting is formed on the casting material, A first mixer unit to be added and mixed; A second mixer portion in which a second additive having a weight less than the weight of the first additive is added to and mixed with the casting material to which the first additive is added so that the coagulation time of the casting is shortened; And a casting portion for casting the casting material into which the second additive is added to the inner space of the casting mold.

The first additive may be added in an amount of 10 wt% to 25 wt% of the weight of the cast material.

The first additive may include 30 to 40% by weight of propylene carbonate, 30 to 40% by weight of glycerol triacetate, 10 to 40% by weight of butanedioic acid dimethyl ester, By weight, from 15% by weight to 15% by weight of glutaric acid, from 20% by weight to 25% by weight of glutarate and from 5% by weight to 10% by weight of hexadecyl acid dimethyl ester.

The second additive may be added in an amount of 10% by weight to 25% by weight based on the weight of the first additive.

The second additive may include 40 wt% to 45 wt% of a phenolic resin, 3 wt% to 4 wt% of potassium hydroxide, 10 wt% to 15 wt% of sodium hydroxide, % Of water and 35% to 40% by weight of water.

The casting method according to the present embodiment includes the steps of adding and mixing a first additive having a weight less than the weight of the casting material used in the casting to the casting material; Adding a second additive in a weight less than the weight of the first additive to the casting material to which the first additive is added; And injecting a casting material to which the second additive is added in an inner space of the casting mold to produce a casting.

In addition, the first additive may be added in an amount of 10 wt% to 25 wt% of the weight of the cast material.

The addition of the first additive may include adding 30 wt% to 40 wt% of propylene carbonate, 30 wt% to 40 wt% of glycerol triacetate, From 10 to 15% by weight of butanedioic acid dimethyl ester, from 20 to 25% by weight of glutarate and from 5 to 10% by weight of hexadioic acid dimethyl ester, % ≪ / RTI > by weight.

Also, in the step of adding and mixing the second additive, 10 to 25% by weight of the weight of the first additive may be added to the second additive.

The second additive may be added in an amount of 40 wt% to 45 wt% of a phenolic resin, 3 wt% to 4 wt% of potassium hydroxide, 10% to 15% by weight of sodium hydroxide and 35% to 40% by weight of water.

The present invention provides a casting production apparatus and a casting method using the same, which are capable of improving the cohesion and binding force of the castings to be manufactured and preventing the oxidation of the castings by forming a thin film on the castingsurface thereof. It is possible to provide a casting and prevent the casting from being oxidized, so that the casting can be safely produced even in the case of a casting material which is in danger of explosion in a dusty state. Further, by providing a casting production apparatus and a casting production method using the same, the production time can be shortened compared with the conventional casting production time, and the casting production time can be increased.

1 is a view showing a configuration of a casting production apparatus according to an embodiment of the present invention.
2 is a view illustrating a casting method according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a view showing a configuration of a casting production apparatus according to an embodiment of the present invention.

1, the structure of a casting production apparatus according to the present embodiment will be described.

The casting apparatus according to the present embodiment includes a hopper 110 for feeding a casting material, a first additive having a weight smaller than the weight of the casting material used for making the casting so as to improve the cohesion and bonding force of the casting, A second mixer unit 100 having a first mixer unit 100 and a second mixer unit 200 in which a second additive smaller than the weight of the first additive is added to and mixed with the casting material to which the first additive is added so as to shorten the solidification time of the cast, A casting part 500 for casting a casting material into which a second additive is added to the inner space of the casting mold, and a casting part 510 for discharging the casting.

In detail, the casting manufacturing apparatus according to the present embodiment makes the casting material aggregate in the form of dust so that the cohesion and binding force of the casting can be improved when the casting is solidified when the casting is made using pressure, A first additive is added so as to form a thin film to prevent oxidation.

The casting material here means sodium silicate or magnesium in the form of dust.

The addition of the casting material to the hopper 110 and the addition of the first additive is an embodiment of the present invention, and the present invention is not limited to the specific embodiment.

For example, in some cases, the first additive may be added to the cast material, and then the mixture may be introduced into the hopper 110 to be mixed.

The amount to which the first additive is added is 10 wt% to 25 wt% of the weight of the cast material. Incidentally, considering the temperature (temperature) and humidity of the blades to be manufactured, if the amount of the first additive added is 10 wt% of the weight of the cast material in the summer when the temperature is high and the humidity is high, 20 wt% to 25 wt% of the weight of the material is added.

The first additive is composed of propylene carbonate, glycerol triacetate, butanedioic acid dimethyl ester, glutarate and hexadecyl acid dimethyl ester .

The constituents of the first additive will be described in more detail as follows.

First, the composition ratio of each constituent material of the first additive is 30 to 35% by weight of propylene carbonate, 30 to 35% by weight of glycerol triacetate, butanedioic acid (inclusive) of 10 to 13% by weight of dimethyl ester, 20 to 22% by weight of glutarate and 5 to 9% by weight of hexadienoic acid dimethyl ester.

The following table shows the specifications of the first additive of the present invention in detail.

Here, the official name of triacetine is glycerol triacetate, the official name of the living acid dimethyl is butanedioic acid dimethyl ester, the official name of the dimethyl lipid is dimethyl adi Hexanedioic acid dimethyl ester.

The content shown in the above table indicates the content of each substance according to the weight of the first additive.

Meanwhile, the casting material to which the first additive is added is mixed through the first mixer unit 100 and moved to the second mixer unit 200.

When the casting material is moved to the second mixer portion, a second additive is added.

The reason for adding the second additive is to improve the cohesion and bonding force of the casting material and to improve the quality of the casting produced.

Here, the first mixer unit 100 includes a stirring device for mixing the casting material and the first additive.

Further, the second mixer unit 200 includes a stirring device for mixing the casting material moved in the first mixer unit and the second additive.

Here, the stirring device is provided in the form of a screw.

The second mixer unit 200 is opened on the upper surface of the first mixer unit 100. When the mixed material is added to the first mixer unit 100 and is moved from the first mixer unit 100 to the second mixer unit 200, Additives may be added.

Here, the addition of the second additive to the open top surface is an embodiment of the present invention, and the present invention is not limited to the specific examples.

For example, if the top surface of the second mixer section is not open, an injection section capable of adding a second additive may be additionally provided.

On the other hand, the amount of the second additive added is 10 wt% to 25 wt% of the weight of the first additive, and the amount of the added additive is different depending on the temperature and humidity, as in the case of the first additive. Add the smaller amount.

In addition, the second additive is composed of phenolic resin, potassium hydroxide, sodium hydroxide and water.

The constituents of the second additive will be described in more detail as follows.

First, the composition ratio of the constituent materials of the second additive is 42 wt% to 45 wt% of a phenolic resin, 3 wt% to 4 wt% of potassium hydroxide, 11 wt% of sodium hydroxide % To 15% by weight of water and 37% by weight to 40% by weight of water.

The following table shows the specifications of the second additive of the present invention in detail.

Meanwhile, the casting material mixed in the second mixer unit 200 is moved to the casting forming unit 500 in 10 minutes.

The casting part 500 of this embodiment includes a mold and a pressurizing device.

Here, the mold means a mold used for casting the casting material.

The pressurizing device means a device for applying pressure to solidify the casting material in a desired shape.

When the casting material is solidified in the pressurizing apparatus to produce a casting, the casting is discharged through the casting discharging unit 510.

Although not shown in FIG. 1, the casting apparatus according to the present embodiment may include a moving unit capable of moving the casting manufactured in the casting unit 500 to the casting outlet 510. Here, the moving part means a conveyor belt.

2 is a view illustrating a casting method according to an embodiment of the present invention.

The casting method according to the present embodiment will be described with reference to FIG.

In the casting method according to the present embodiment, a first additive having a weight less than the weight of the casting material used in the casting is added to the casting material and mixed.

When the casting material and the first additive are charged into the first mixer unit, the casting material and the first additive are mixed using the stirring unit of the first mixer unit (S210).

Here, the weight less than the weight of the casting material means 10 wt% to 25 wt% of the weight of the casting material as described above.

Second, a second additive having a weight less than the weight of the first additive is added to the casting material to which the first additive is added and mixed (S220).

The casting material mixed in the first mixer unit moves to the second mixer unit.

Then, the second additive is added again and mixed using the stirring device of the second mixer part.

Here, the weight less than the weight of the first additive means 10 wt% to 25 wt% of the weight of the first additive as described above

Further, the mixed casting material moves to the casting forming part and is injected into the inner space of the casting mold.

At this time, the second additive is added to the casting material so that the time taken until the mixed and mixed casting material moves to the casting forming portion is not more than 10 minutes.

Finally, a casting material having a second additive added thereto is injected into the inner space of the mold to produce a casting (S230).

When the casting material is injected into the inner space of the mold, the pressurizing device applies pressure. At this time, the pressed casting material is solidified in the shape of a mold, and the solidified casting is discharged through the casting outlet portion.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100: first mixer section
110: Hopper
200: second mixer unit
500: casting forming part
510: casting outlet

Claims (10)

A first mixer part in which a first additive smaller in weight than a casting material used for producing a casting is added to and mixed with the casting material so as to improve cohesion and binding force of the casting to be manufactured;
A second mixer portion in which a second additive having a weight less than the weight of the first additive is added to and mixed with the casting material to which the first additive is added so that the coagulation time of the casting is shortened; And
And a casting part for casting a casting material to which the second additive is added in an inner space of the casting mold,
Wherein the first additive is added in an amount of 10 wt% to 25 wt% of the weight of the cast material,
Wherein the second additive is added in an amount of 10 wt% to 25 wt% of the weight of the first additive,
The casting material,
Sodium silicate or magnesium,
The casting material,
When the casting material is mixed with the first additive and the second additive in the second mixer portion, the casting material is injected into the casting portion within 10 minutes after being mixed so as to solidify in a desired shape,
The first additive may include 30 to 35% by weight of propylene carbonate, 30 to 35% by weight of glycerol triacetate, 10% by weight of butanedioic acid dimethyl ester, To 13% by weight of glutaric acid, 20% to 22% by weight of glutarate and 5% to 9% by weight of hexadienoic acid dimethyl ester,
The second additive may include 42 wt% to 45 wt% of a phenolic resin, 3 wt% to 4 wt% of potassium hydroxide, 11 wt% to 15 wt% of sodium hydroxide, Wherein the water contains 37% by weight to 40% by weight of water. delete delete delete delete The first additive being added to the casting material and mixing less than the weight of the casting material used in the casting;
Adding a second additive in a weight less than the weight of the first additive to the casting material mixed with the first additive; And
And injecting a casting material mixed with the first additive and the second additive into an inner space of the mold to produce a casting,
Wherein the first additive is added to and mixed with the casting material,
Wherein the first additive is added to the cast material by adding 10 wt% to 25 wt% of the weight of the cast material,
Wherein the second additive is added to and mixed with the casting material in which the first additive is mixed,
The second additive is added to the cast material to which the first additive is added in an amount of 10 to 25% by weight based on the weight of the first additive,
The casting material,
Sodium silicate or magnesium,
The step of injecting a casting material mixed with the first additive and the second additive into the inner space of the mold to produce a casting,
Wherein the casting material mixed with the first additive and the second additive is mixed so as to solidify in a desired shape when the casting material is mixed with the first additive and the second additive, Forming portion,
Wherein the first additive is added to and mixed with the casting material,
Wherein the first additive comprises 30 wt% to 35 wt% of propylene carbonate, 30 wt% to 35 wt% of glycerol triacetate, 10 wt% of butanedioic acid dimethyl ester, To 13% by weight of glutarate, 20% to 22% by weight of glutarate and 5% to 9% by weight of hexadienoic acid dimethyl ester,
Wherein the second additive is added to and mixed with the casting material in which the first additive is mixed,
The second additive may include 42 wt% to 45 wt% of a phenolic resin, 3 wt% to 4 wt% of potassium hydroxide, 11 wt% to 15 wt% of sodium hydroxide, Characterized in that the water contains from 37% to 40% by weight of water. delete delete delete delete

Images