KR20170070386A - The Unified Piston Of Airconditioner Compressor And Manufacturing Method Thereof - Google Patents

The Unified Piston Of Airconditioner Compressor And Manufacturing Method Thereof Download PDF

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Publication number
KR20170070386A
KR20170070386A KR1020150177829A KR20150177829A KR20170070386A KR 20170070386 A KR20170070386 A KR 20170070386A KR 1020150177829 A KR1020150177829 A KR 1020150177829A KR 20150177829 A KR20150177829 A KR 20150177829A KR 20170070386 A KR20170070386 A KR 20170070386A
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Prior art keywords
piston
air conditioner
conditioner compressor
manufacturing
thin plate
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KR1020150177829A
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Korean (ko)
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KR101776827B1 (en
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강희삼
정태호
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현대자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0009—Cylinders, pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
    • B22D21/04—Casting aluminium or magnesium

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compressor (AREA)

Abstract

The present invention relates to an integral type piston for an air conditioner and a method for manufacturing the same, and more particularly, to an integral type piston for an air conditioner compressor which not only reduces the weight of the piston by forming the piston integrally, but also improves the fuel efficiency of the vehicle, and a method of manufacturing the same.
According to an aspect of the present invention, there is provided a method of manufacturing a loudspeaker, the method comprising: a first step of manufacturing a lost foam in the same manner as the shape of a piston for an air conditioner compressor; A second step of fixing a thin plate insert to the inside of the lost foam so that the lost foam can maintain a hollow shape; A third step of placing the lobed foam with the thin plate insert fixed on the mold together with the sand; A fourth step of injecting the molten metal into the sprue connected to the mold of the mold; And a fifth step of removing the mold and the sand, and processing the casting. [5] The method of manufacturing an integrated type piston for an air conditioner compressor according to claim 1,

Description

TECHNICAL FIELD The present invention relates to an integral type piston for an air conditioner,

The present invention relates to an integral type piston for an air conditioner and a method for manufacturing the same, and more particularly, to an integral type piston for an air conditioner compressor which not only reduces the weight of the piston by forming the piston integrally, but also improves the fuel efficiency of the vehicle, and a method of manufacturing the same.

Recently, as the problem of environmental pollution emerges as the most important problem all over the world, all industries are trying to solve this problem in order to reduce environmental pollutants. In particular, the problem caused by global warming is serious because of the carbon dioxide emitted by automobile exhaust gas. Accordingly, the automotive industry in particular has proposed solutions in various ways to reduce CO 2 emissions.

As a representative method, there is a method of increasing the mileage of the vehicle per liter by increasing the mileage of the vehicle, and a method of reducing the weight of the parts of the vehicle. However, if the weight of the vehicle parts is reduced, the stiffness and durability of the vehicle parts are lowered, thereby causing a problem in the safety of the passengers on board the vehicle.

Generally, when the air conditioner is operated when driving the vehicle, the fuel efficiency of the vehicle is lowered by 10 to 15% than when the air conditioner is not operated. The main cause of the deterioration of the fuel efficiency due to the operation of the air conditioner is the air conditioner compressor that receives and drives some of the power generated from the engine. In the case of driving the air conditioner, the air conditioner compressor which receives the heated indoor air for various reasons and compresses it together with the refrigerant compresses the air by sequentially reciprocating the plural pistons by the phase difference while rotating the swash plate at high speed . At this time, the power for rotating the swash plate and reciprocating the piston is obtained from the engine, and the resulting power loss of the engine is connected to a decrease in the fuel efficiency of the vehicle.

Therefore, in order to reduce the fuel consumption loss, it is essential that the piston applied to the air-conditioner compressor is lightweight, and now the piston for the air-conditioner compressor is manufactured as a hollow type with an empty interior. In order to realize a piston type hollow structure for an air conditioner compressor, the prior art is manufactured by a complicated process in which the piston is divided into an upper portion and a lower portion, respectively, forged and formed through friction joining, There is a problem that the manufacturing cost is increased due to the additional process.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an integral type piston for an air conditioner compressor that not only increases fuel efficiency of a vehicle by molding a transfer piston for an air conditioner compressor, There is a purpose.

It is another object of the present invention to provide a method for manufacturing an integral type piston for an air conditioner compressor that simplifies a manufacturing method and reduces manufacturing cost by integrally manufacturing a piston for an air conditioner compressor.

The technical objects to be achieved by the present invention are not limited to the technical matters mentioned above, and other technical subjects which are not mentioned can be clearly understood by those skilled in the art from the description of the present invention .

According to an aspect of the present invention, there is provided a method of manufacturing a loudspeaker, the method comprising: a first step of manufacturing a lost foam in the same manner as the shape of a piston for an air conditioner compressor; A second step of fixing a thin plate insert to the inside of the lost foam so that the lost foam can maintain a hollow shape; A third step of placing the lobed foam with the thin plate insert fixed on the mold together with the sand; A fourth step of injecting molten metal into a molten metal injection part connected to the mold of the mold; And a fifth step of removing the mold and the sand, and processing the casting. [5] The method of manufacturing an integrated type piston for an air conditioner compressor according to claim 1,

In the present invention, it is preferable that the molten metal contains Al as a main component, 34.5 to 43.0 wt% of Cu, and 0.5 to 2.8 wt% of Si based on the total weight.

In the present invention, the thin plate insert is preferably aluminum or an aluminum alloy.

In the present invention, it is preferable that the coefficient of thermal expansion of the thin plate insert is 18 × 10 -6 / ° C. to 25 × 10 -6 / ° C.

In addition, according to the present invention for solving the problems of the prior art described above, Al is a main component, and Cu is 34.5 to 43.0 wt% and Si is 0.5 to 2.8 wt% And an air-conditioning compressor.

In the present invention, the pocket portion of the integral-use piston for the air-conditioner compressor is preferably a metal insert having excellent wear resistance and a different material.

In the present invention, it is preferable to include a thin plate insert so as to maintain a hollow shape inside the integral piston for the air conditioner compressor.

In the present invention, it is preferable that the coefficient of thermal expansion of the thin plate insert is 18 × 10 -6 / ° C. to 25 × 10 -6 / ° C.

INDUSTRIAL APPLICABILITY According to the integral type piston for an air conditioner compressor of the present invention, it is possible to provide an integral type piston for an air conditioner compressor that not only increases the fuel consumption of a vehicle but also reduces manufacturing cost.

In addition, according to the method of manufacturing an integral type piston for a compressor of the present invention, there is an effect of providing a method for manufacturing an integral type piston for an air conditioner compressor by manufacturing a piston for an air conditioner compressor in a simple manner and reducing manufacturing cost .

1 is a view showing a manufacturing process of a transfer piston for an air conditioner compressor according to the prior art.
2 is a cross-sectional view of a transfer piston for an air conditioner compressor according to the prior art;
3 is a view showing a manufacturing process of an integral type piston for an air conditioner compressor according to an embodiment of the present invention.
4 is a photograph of an integral piston for an air conditioner compressor according to an embodiment of the present invention.
5 is a view showing a structure in which a pocket portion of an integral type piston for an air conditioner compressor is reinforced according to an embodiment of the present invention.
6 is a graph showing the elastic modulus according to the Cu content of a piston for an air conditioner according to an embodiment of the present invention and a related art.
FIG. 7 is a graph showing the fraction of primary Al 2 Cu phase according to the Cu content of the piston for an air conditioner compressor according to the embodiment of the present invention and the related art. FIG.
8 is a graph showing the tensile strength according to the Si content of 35% by weight of Cu in the piston of the air conditioner compressor according to the embodiment of the present invention and the related art.
Figure 9 is an enlarged photograph showing a Primary Al 2 Cu particle size changes in Al-Al 2 Cu lamellar structure and the Cu content is increased.
10 is a graph showing the casting evaluation factors according to the Cu content of the piston for an air-conditioner compressor according to the embodiment of the present invention and the related art.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

The present invention relates in one aspect to a method of manufacturing an integral piston (100) for an air conditioner compressor. Currently, the piston for air conditioner compressor has a hollow type structure for light weight.

In order to realize a piston for an air conditioner compressor of the hollow type structure as described above, a conventional manufacturing process is complicated as shown in FIG. 1 is a view showing a manufacturing process of a transfer piston 1 for an air conditioner compressor according to the prior art. First, an aluminum upper forged preform 11 is prepared, and hot forging is performed using a top mold 13 and a bottom mold 15 of an aluminum upper forged preform. Then, the upper portion 17 of the transfer piston for the air conditioner compressor is formed through roughing. Similarly, the aluminum lower forging preforms 21 are prepared, and hot forging is performed using the upper die 23 and the lower die 25 of the aluminum lower forging preform. Then, the lower portion 27 of the transfer piston for the air conditioner compressor is formed through roughing. Finally, the upper part (17) and the lower part (27) of the transfer piston for the air conditioner compressor were frictionally connected to manufacture a finished product transfer piston for an air conditioner compressor. 2 is a cross-sectional view of a transfer piston for an air conditioner compressor according to the prior art. 2, it is possible to confirm the jointed portion 30, that is, the friction joint portion 30, by the friction between the upper portion 17 and the lower portion 27 of the transfer piston for the air-conditioner compressor. In the conventional method of manufacturing a transfer piston for an air conditioner compressor, there is a problem that the production cost of a piston for an air conditioner compressor of a hollow type structure is increased due to a complicated process.

SUMMARY OF THE INVENTION The present invention provides a method of manufacturing an integral type piston for an air conditioner compressor. A method for manufacturing an integrated type piston 100 for an air conditioner compressor according to the present invention will now be described with reference to FIGS. A second step of fixing the thin plate insert 105 inside the lobsters 101, 103 so that the lobsters 101, 103 can maintain a hollow shape; A third step of placing the lost foams 101 and 103 to which the thin plate insert 105 is fixed together with the sand in a mold; A fourth step of injecting molten metal into the molten metal injection unit 109 connected to the molds 101 and 103; And a fifth step of removing the mold and the sand 107 and processing the casting. Further, it is preferable that the molten metal contains Al as a main component, 34.5 to 43.0 wt% of Cu, and 0.5 to 2.8 wt% of Si relative to the total weight. Further, it is preferable that the thin plate insert 105 is aluminum or an aluminum alloy, and the thermal expansion coefficient of the thin plate insert is preferably 18 × 10 -6 / ° C. to 25 × 10 -6 / ° C. In addition, it is preferable that the integral piston for an air-conditioner compressor includes a metal insert by preliminarily fixing a metallic insert 111 having excellent abrasion resistance and a different material to the lost foam of the first step.

3 is a view showing a manufacturing process of the integral type piston 100 for an air conditioner compressor according to an embodiment of the present invention. When the upper and lower louvers 101 and 103 of the integral type piston for the air conditioner compressor are coupled to each other, they are manufactured in the same manner as the shape of the integral type piston 100 for an air conditioner compressor. Then, the thin plate insert 105 is fixed so as to maintain a hollow shape in the inner space formed by the combination of the upper lost foam 101 and the lower lost foam 103 of the integral type piston for the air conditioner. The molten metal is injected into the molten metal injection unit 109 connected to the molds 101 and 103 of the molten mold after the molten metal is placed in the mold together with the sand 107, . Then, the integrated piston 100 for the air conditioner compressor, which is the final product, is manufactured. In the case of the upper and lower lost foams, when a styrofoam is produced in the same manner as the actual piston shape, a thin plate insert 105 is formed on the wall surfaces of the lost foams 101 and 103 in such a manner that the inner hollow shape can be maintained . As described above, the present invention is advantageous in that the insert can be freely applied to a desired position as needed, unlike the conventional forging technique. After the assembled lobsters 101 and 103 are filled with the sand in the mold, the molten liquid is injected and the assembled lobsters 101 and 103 are melted to produce an integral piston 100 for an air conditioner as a final product .

4 is a photograph of an integral piston 100 for an air conditioner compressor according to an embodiment of the present invention. As shown in FIG. 4, the integral piston 100 for an air conditioner maintains a hollow shape inside but does not have a friction joining portion, and the step of performing frictional joining as in the integral type piston 100 for an air conditioner compressor is omitted, .

FIG. 5 is a view showing a configuration in which a pocket portion of an integral type piston 100 for an air conditioner compressor is reinforced according to an embodiment of the present invention. When the upper and lower lobes 101 and 103 are assembled to each other, a metal material having a high rigidity and a high wear resistance is inserted into the pocket portion of the piston 100 for an air conditioner compressor, Can be positioned in the pocket portion of the integral-use piston for an air-conditioner compressor as shown in FIG. 5 to improve the rigidity and wear resistance of the piston.

On the other hand, the present invention relates to an integral type piston 100 for an air conditioner compressor applied to a vehicle from another aspect. According to the present invention, there is provided an integrated type piston 100 for an air conditioner, which comprises Al as a main component, 34.5 to 43.0% by weight of Cu, and 0.5 to 2.8% by weight of Si, do. Further, it is preferable that the pocket portion of the integral-use piston for the air conditioner compressor is a metal insert (111) having excellent wear resistance and a different material, and the insert insert (100) (105). Also, the coefficient of thermal expansion of the thin plate insert 105 is preferably 18 × 10 -6 / ° C. to 25 × 10 -6 / ° C.

More specifically, a high-strength and high-rigidity aluminum alloy is applied to the present invention to ensure the durability of the integral piston 100 for an air-conditioner compressor. The high strength and high strength aluminum alloy is mainly composed of aluminum (Al), and an aluminum alloy containing 34.5 to 43.0 wt% of copper (Cu) and 0.5 to 2.8 wt% of silicon (Si) is applied thereto. The high-strength and high-strength aluminum alloy includes Al 2 Cu superalloy 121 and Al-Al 2 Cu lamellar structure 123.

The copper (Cu) preferably contains 34.5 to 43.0% by weight based on the weight of the entire alloy to ensure rigidity and to produce an Al 2 Cu superlattice 121 as a metal-to-metal compound. At this time, when copper (Cu) is less than 34.5 wt%, rigidity of a sufficient material of 120 GPa or more can not be secured, and when it exceeds 43.0 wt%, Al 2 Cu superlattice 121 as an intermetallic compound is formed in an amount of 50% It can not be used for the integral piston 100 for an air-conditioner compressor due to problems of brittleness and processability.

Furthermore, the silicon (Si) is used for reinforcing the strength of an Al-Cu base alloy containing 33% by weight or more of copper (Cu) based on the weight of the entire alloy. If Si (Si) is not added, the Al-Cu base alloy containing 33 wt% or more of copper (Cu) based on the weight of the entire alloy will have a strength of 100 MPa or less. It is preferable that the weight of silicon (Si) is 0.5 to 2.8 wt% based on the weight of the entire alloy based on the above fact. If the weight of silicon (Si) is less than 0.5 wt% or exceeds 2.8, there is a problem that sufficient strength can not be obtained.

In addition, the coefficient of thermal expansion of the thin plate insert 105 is preferably 18 × 10 -6 / ° C. to 25 × 10 -6 / ° C. The coefficient of thermal expansion of the aluminum alloy, that is, the base material, of the integral piston 100 for the air conditioner compressor is 17 × 10 -6 / ° C. However, when the thermal expansion coefficient of the thin plate insert (105) is larger than that of the base material, the air conditioner is integrated with the base material at the time of operation. However, when the thermal expansion coefficient is excessively large at 25 or more, Can cause. That is, when the sheet insert is less than 18 × 10 -6 / ° C., there is a problem that it is not integrated with the base material. When the sheet insert exceeds 25 × 10 -6 / ° C., .

[Example]

Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these embodiments are merely illustrative of the present invention and that the scope of the present invention is not construed as being limited by these embodiments.

Figure 9 is an enlarged photograph showing the Al-Al 2 Cu particles change in size of the lamellar structure (123) and Al 2 Cu second top 121 in accordance with the Cu content increases. The reason why the upper limit of Cu content is set is that when the Cu content exceeds 43 wt%, the phase fraction of Al 2 Cu superlattice is increased, and as a result, the Al 2 Cu superlattice clusters and coarsening phenomenon occur, And the workability (tool damage) deteriorated, and Cu was limited to 43 wt% or less.

Figure pat00001

In Equation (1), the liquidus line of Cu means the maximum temperature at which Cu dissolves. F (calories) means heat capacity x latent heat. Further, F (composition) means a ratio of (Cu% by weight) / (Al% by weight). The value of Equation (1) should be equal to or larger than 2 to secure sufficient strength of the material.

Al content
(weight%) Cu content
(weight%) Liquid line
(K) heat capacity
(J / gK) Latent heat
(J / g) F (calories) F (composition) Casting evaluation factor 67 33 545 0.733 381 520 0.49 1.89 66 34 550 0.728 381 523 0.52 1.96 65 35 554 0.723 381 527 0.54 2.05 61 39 567 0.702 381 543 0.64 2.58 59 41 574 0.693 380 548 0.69 2.97 57 43 580 0.682 380 557 0.75 3.63 55 45 587 0.672 380 565 0.82 4.72

The above table is a table showing the casting evaluation factors according to the respective contents of Al and Cu. As shown in Table 1 and Table 1, when the value of the main composition evaluation factor is 2 or more, it can be confirmed that Cu should be 34.5 wt% or more. 10 is a graph showing the casting evaluation factors according to the Cu content of the piston 100 for the air conditioner according to the embodiment of the present invention and the prior art. The values in Table 1 were evaluated by casting evaluation factors according to Cu content. As shown in FIG. 10, when the content of Cu is 34.5 wt% or more, it can be confirmed that the main composition evaluation factor is 2 or more.

Cu content
(weight%) Modulus of elasticity
(GPa) Al 2 Cu superlattice
Phase fraction
(%) Comparative Example 1 33 - 0 Comparative Example 2 34 119 5 Example 1 35 123 10 Example 2 37 130 20 Example 3 39 137 30 Example 4 41 145 40 Example 5 43 154 50 Comparative Example 3 45 163 60

Table 2 is a table showing the elastic modulus of the alloy and the phase fraction of Al 2 Cu superstructure according to the Cu content of the integral piston for an air conditioner compressor of the present invention. As described above, since the phase fraction of Al 2 Cu superstructure becomes 50% or more of the intermetallic compound property formed on the microstructure, it can not be used as a problem of brittleness and processability, and is limited to less than 50% The content was selected to be more than 120 GPa. Table 2 shows that Examples 1 to 5 satisfy all the conditions, but Comparative Example 1 and Comparative Example 2 have a problem that the modulus of elasticity does not exceed 120 GPa. In Comparative Example 3, the phase fraction of Al 2 Cu superstructure is 50% There is a problem that exceeds. 6 is a graph showing the elastic modulus of the piston 100 for an air conditioner according to an embodiment of the present invention and a conventional art according to the Cu content. As shown in FIG. 6, it can be confirmed that when the content of Cu is 34.5 wt% or more, the elastic modulus satisfies 120 GPa. 7 is a graph showing the phase fraction of Al 2 Cu superstructure according to the Cu content of the piston for an air conditioner according to an embodiment of the present invention and a related art. As shown in FIG. 7, when the Cu content is 43 wt% or less, it can be confirmed that the phase fraction of Al 2 Cu superstructure is 50% or less.

Remarks Si content
(weight%) The tensile strength
(MPa) Comparative Example 4 0 65 Example 6 0.5 540 Example 7 One 540 Example 8 1.5 500 Example 9 2 470 Example 10 2.5 430 Comparative Example 5 3 380 Comparative Example 6 4 260

Table 3 shows the tensile strength according to the Si content when Al is the main component and Cu is 35 weight% with respect to the weight of the whole alloy. Generally, the material used for the piston 100 for an air conditioner compressor needs to have a tensile strength of 400 MPa or more. As can be seen from the above Table 3, it can be seen that Examples 6 to 10 have tensile strengths ranging from 430 to 540 MPa and satisfy the above conditions. However, Comparative Examples 4 to 6 show that the tensile strength is less than 400 MPa . 8 is a graph showing the tensile strength according to the Si content of the piston 100 for an air conditioner according to the embodiment of the present invention and the related art when the Cu content is 35% by weight. As shown in Table 3, when the tensile strength is 400 MPa or more, it can be confirmed that the Si content is 0.5 to 2.8 wt%.

The present invention can reduce the material cost and process cost by integrating the prior art transfer piston for the air conditioner compressor, as well as improve the fuel efficiency of the vehicle through the hollow cylinder of the piston and thereby reduce the exhaust gas, thereby preventing environmental pollution . In addition, when a metal insert having excellent wear resistance is applied to the pocket portion of the integral type piston for an air conditioner, there is an advantage that the problem of the compressor can be improved.

Although the present invention has been described in connection with the specific embodiments of the present invention, it is to be understood that the present invention is not limited thereto. 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 as defined by the appended claims and their equivalents. Various modifications and variations are possible.

1: Transfer piston for air conditioner compressor
11: Aluminum upper forged preform
13: Top mold of aluminum upper forged preform
15: Lower mold of aluminum upper forged preform
17: upper part of the transfer piston for air conditioner compressor
21: Aluminum Forged Preform
23: Top mold of aluminum forged preform
25: Lower mold of aluminum forged preform
27: Lower part of a change-over piston for an air-conditioner compressor
30: Friction joint part of a transfer piston for air conditioner compressor
100: One-piece piston for air conditioner compressor
101: Lost foam of integral piston for air conditioner compressor
103: Lower Lost Foam of Integral Piston for A / C Compressor
105: Thin plate insert of integral piston for air conditioner compressor
107: Sand
109:
111: metal insert
121: Al 2 Cu super normal
123: Al-Al 2 Cu lamellar structure

Claims (9)

A first step of manufacturing a lost foam in the same manner as the shape of a piston for an air conditioner compressor;
A second step of fixing a thin plate insert to the inside of the lost foam so that the lost foam can maintain a hollow shape;
A third step of placing the lobed foam with the thin plate insert fixed on the mold together with the sand;
A fourth step of injecting molten metal into a molten metal injection part connected to the mold of the mold; And
And a fifth step of removing the mold and the sand and processing the casting product.
The method according to claim 1,
The molten metal has, in relation to the total weight,
Wherein the main component is Al, the Cu content is 34.5 to 43.0 wt%, and the Si content is 0.5 to 2.8 wt%.
The method according to claim 1,
Wherein the thin plate insert is aluminum or an aluminum alloy.
The method according to claim 1,
Wherein the thermal expansion coefficient of the thin plate insert is 18 x 10 -6 / ° C to 25 x 10 -6 / ° C.
The method according to claim 1,
A method for manufacturing an integral type piston for an air conditioner compressor, wherein the integral type piston for an air conditioner compressor includes a metal insert, which has excellent abrasion resistance and is made of different materials, in advance in the losing foam of the first step.
Characterized in that it comprises Al as a main component, 34.5 to 43.0 wt% of Cu, and 0.5 to 2.8 wt% of Si based on the total weight of the alloy.
The method according to claim 6,
Characterized in that the pocket portion of the integral piston for the air conditioner compressor is a metal insert having excellent wear resistance and a different material.
The method according to claim 6,
And a thin plate insert for maintaining a hollow shape inside the integral piston for the air conditioner compressor.
9. The method of claim 8,
Wherein the thin plate insert has a coefficient of thermal expansion of 18 占10-6 / 占 폚 to 25 占10-6 / 占 폚.
KR1020150177829A 2015-12-14 2015-12-14 The Unified Piston Of Airconditioner Compressor And Manufacturing Method Thereof KR101776827B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190072918A (en) * 2017-12-18 2019-06-26 임락복 A method of bonding a copper alloy on ferrous cast metal by insert casting.
KR20190081174A (en) 2017-12-29 2019-07-09 현대자동차주식회사 Complex body containing magnetic substance alloy powder, Air-conditioner compressor having the same, Method for manufacturing them

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200421866Y1 (en) * 2006-05-01 2006-07-18 희성정밀 주식회사 Forming device for the piston of automobile aircondition compressor
JP5923737B2 (en) * 2012-05-11 2016-05-25 有限会社広和製作所 Composite model for casting and casting method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190072918A (en) * 2017-12-18 2019-06-26 임락복 A method of bonding a copper alloy on ferrous cast metal by insert casting.
KR20190081174A (en) 2017-12-29 2019-07-09 현대자동차주식회사 Complex body containing magnetic substance alloy powder, Air-conditioner compressor having the same, Method for manufacturing them
US10975923B2 (en) 2017-12-29 2021-04-13 Hyundai Motor Company Plastic composite containing magnetic alloy powder, air conditioner compressor having the same and method of producing them

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