KR20110084015A - Composition of cylinder block for compressor in automobile airconditioner - Google Patents

Composition of cylinder block for compressor in automobile airconditioner Download PDF

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KR20110084015A
KR20110084015A KR1020100004033A KR20100004033A KR20110084015A KR 20110084015 A KR20110084015 A KR 20110084015A KR 1020100004033 A KR1020100004033 A KR 1020100004033A KR 20100004033 A KR20100004033 A KR 20100004033A KR 20110084015 A KR20110084015 A KR 20110084015A
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South Korea
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cylinder block
weight
compressor
composition
air conditioner
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KR1020100004033A
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Korean (ko)
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이건호
김학수
남동림
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주식회사 두원전자
학교법인 두원학원
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Priority to KR1020100004033A priority Critical patent/KR20110084015A/en
Publication of KR20110084015A publication Critical patent/KR20110084015A/en

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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
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent

Abstract

PURPOSE: A composition for a cylinder block of a compressor for an air conditioner of a vehicle is provided to improve hardness, processability, and abrasion-resinstance by adding silicon, copper, and magnesium. CONSTITUTION: A composition for a cylinder block of a compressor for an air conditioner of a vehicle is composed of silicon 10~20 weight%, copper 2~7 weight%, magnesium 0.3~0.9 weight%, zinc 0.0001~1.5 weight%, iron 0.1~0.7 weight%, manganese 0.2~0.8 weight%, nickel 0.1~1.2 weight%, chromium 0.02~0.3 weight%, and residual aluminum.

Description

자동차 공조기용 압축기의 실린더 블록용 소재 조성물{Composition of cylinder block for compressor in automobile airconditioner}Composition of cylinder block for compressor in automobile air conditioner

본 발명은 증가된 경도 및 내모마성과 좋은 가공성을 확보할 수 있는 자동차 공조기용 압축기의 실린더 블록용 소재 조성물 및 이를 이용한 자동차 공조기용 압축기의 실린더 블록 제조방법에 관한 것이다.The present invention relates to a cylinder block material composition of a compressor for an automobile air conditioner capable of ensuring increased hardness and wear resistance and good processability, and a method of manufacturing a cylinder block of the compressor for an automobile air conditioner using the same.

일반적으로, 자동차 공조기용 압축기의 실린더 블록은 피스톤이 사판의 회전에 의해 연동하여 왕복 작용을 하는 구조로써, 2분할체 1조로 프론트 하우징과 리어 하우징 및 상기 하우징 내부에 각각 대응하는 실린더 블록이 분리 가능하게 구성되어 있다.In general, a cylinder block of a compressor for an automobile air conditioner has a structure in which a piston reciprocates by interlocking by rotation of a swash plate, and a pair of two-split bodies can separate a cylinder block corresponding to each of the front housing, the rear housing, and the inside of the housing. It is composed.

상기 실린더 블록의 내부에는 다수의 피스톤이 수용되는 복수개의 실린더가 구비되며, 상기 실린더 블록과 실린더 블록의 사이에는 샤프트와 축결합된 사판이 위치하는 사판실이 형성되어 있다. 샤프트가 회전하면 사판이 연동하면서 피스톤은 사판에 의해 왕복 운동을 하게 된다.A plurality of cylinders are provided in the cylinder block to accommodate a plurality of pistons, and a swash plate chamber in which a swash plate axially coupled with the shaft is positioned between the cylinder block and the cylinder block. When the shaft rotates, the swash plate is interlocked and the piston is reciprocated by the swash plate.

따라서, 하나의 실린더 보어에는 사판의 회전 각도에 따라 양측에서 흡입 및 압축 행정이 이루어지며, 이러한 과정을 통해 각각의 실린더 보어에서는 일정한 위상차를 갖고 흡입/압축 행정이 연속적으로 이루어진다.Therefore, one cylinder bore has suction and compression strokes on both sides according to the rotational angle of the swash plate, and through this process, each cylinder bore has a constant phase difference and suction / compression stroke is continuously performed.

한편, ALDC 12종과 같은 일반적인 알루미늄 다이캐스팅 소재를 실린더 블록에 사용하는 경우에는 실린더 보어 마모가 다수 발생하며, 또 쓰러스트 베어링 좌면 마모로 인해 압축기 조립 치수가 변화되어 내구성 악화로 이어진다. 이를 보완하기 위하여 일본의 Denso사에서는 Si를 추가한 ADS 16종을 개발하여 쓰러스트부의 마모를 방지하였으나, 냉매의 변화에 따라 이산화탄소 냉매를 사용 시에는 실린더 보어 내부 마모가 심각한 문제가 야기되어 왔다.On the other hand, when a common aluminum die-casting material such as 12 kinds of ALDC is used for the cylinder block, a large number of cylinder bore wear occurs, and due to wear of the thrust bearing seat, the assembly dimensions of the compressor are changed, leading to deterioration in durability. To compensate for this, Denso of Japan developed 16 types of ADS with added Si to prevent the wear of thrust part. However, when carbon dioxide refrigerant is used due to the change of refrigerant, the internal wear of cylinder bore has been seriously caused.

상기 종래기술의 문제점을 해결하기 위하여, 본 발명자는 기존 알루미늄 소재와 달리 Si와 Cu, Mg를 다수 추가함으로써 향상된 경도 및 내모마성과 좋은 가공성을 확보할 수 있는 자동차 공조기용 압축기의 실린더 블록용 소재 조성물을 개발함으로써 본 발명을 완성하였다.In order to solve the problems of the prior art, the present inventors, unlike the existing aluminum material, by adding a plurality of Si, Cu, Mg, the composition of the material for the cylinder block of the compressor for automobile air conditioner that can ensure improved hardness and wear resistance and good processability The present invention has been completed by the development.

이에, 본 발명의 목적은 실린더 보어 내부의 마모 방지를 위하여 실린더 블록의 경도를 증가시키고 내마모성을 향상시킬 수 있는 자동차 공조기용 압축기의 실린더 블록용 소재 조성물을 제공하는 데에 있다. Accordingly, an object of the present invention is to provide a cylinder block material composition of a compressor for an automotive air conditioner that can increase the hardness of the cylinder block and improve wear resistance in order to prevent abrasion inside the cylinder bore.

또한, 본 발명의 다른 목적은 상기 조성물을 다이캐스팅 공법을 이용하여 실린더 블록에 융착 성형하여 제조하는 자동차 공조기용 압축기의 실린더 블록의 제조방법을 제공하는 데에 있다. Another object of the present invention is to provide a method for producing a cylinder block of a compressor for an automotive air conditioner, which is manufactured by fusion molding the composition to a cylinder block using a die casting method.

상기 목적을 달성하기 위하여, 본 발명은 Si 10-20 중량%, Cu 2-7 중량%, Mg 0.3-0.9 중량%, Zn 1.5 중량% 이하, Fe 0.1-0.7 중량%, Mn 0.2-0.8 중량%, Ni 0.1-1.2 중량%, Cr 0.02-0.3 중량% 및 잔부의 Al로 이루어진 자동차 공조기용 압축기의 실린더 블록용 소재 조성물을 제공한다.In order to achieve the above object, the present invention is Si 10-20% by weight, Cu 2-7% by weight, Mg 0.3-0.9% by weight, Zn 1.5% by weight or less, Fe 0.1-0.7% by weight, Mn 0.2-0.8% by weight It provides a material composition for the cylinder block of the compressor for an automotive air conditioner consisting of 0.1 to 1.2% by weight of Ni, 0.02-0.3% by weight of Cr and the balance of Al.

이하, 본 발명을 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail.

본 발명에 따른 조성물에 있어서, Si는 내마모성을 향상시키고 합금의 열팽창계수를 작게 하며 고온에서 치수 증가를 억제하는 역할을 수행하며, 만약 Si의 함량이 10 중량% 미만인 경우에는 Si량이 부족하여 내마모성이 약화되며, 20 중량%를 초과하면 재질이 무르게 된다.In the composition according to the present invention, Si plays a role of improving wear resistance, reducing the thermal expansion coefficient of the alloy, and suppressing dimensional increase at high temperatures.If the content of Si is less than 10% by weight, the amount of Si is insufficient and wear resistance It is weakened, and if it exceeds 20% by weight, the material becomes soft.

Cu는 Al 상을 고용 강화하는 동시에 고온강도의 향상을 이루는 역할을 수행하며, 만약 Cu 함량이 2 중량% 미만인 경우에는 고온강도가 부족하며, 7 중량%를 초과하면 주조 결함이 발생하기 쉬워진다.Cu serves to solidify the Al phase and at the same time improve the high temperature strength. If the Cu content is less than 2% by weight, the Cu lacks the high temperature strength, and if it exceeds 7% by weight, casting defects are liable to occur.

Mg는 Al 상을 고용 강화 및 인성을 향상시키는 역할을 수행하며, 만약 Mg 함량이 0.3 중량% 미만에서는 그 효과가 부족하며 0.9 중량%를 초과하면 용탕의 유동성이 악화되어 주조결함이 발생되기 쉬워진다.Mg plays a role of strengthening the solid phase of Al phase and improving toughness. If the Mg content is less than 0.3% by weight, the effect is insufficient. If the Mg content is more than 0.9%, the fluidity of the melt is deteriorated and casting defects are likely to occur. .

Zn은 알루미늄 소재 제조 상 불가피하게 발생하는 것으로, 0.0001 내지 0.03 중량%로 함유되는 것이 보다 바람직하며, 1.5 중량%보다 과량이 함유되면 기계적 성질이 저하되는 문제가 야기될 수 있다.Zn is inevitably generated in the production of aluminum material, it is more preferably contained in 0.0001 to 0.03% by weight, the excess of more than 1.5% by weight may cause a problem that the mechanical properties are lowered.

또한, Fe를 다량 함유하게 되면 주조시 기공 발생의 원인이 되는 침상 Al-Fe-Si계 화합물의 영향이 커지므로 주조 시 기공이 많이 발생하는 문제가 야기될 수 있으며, Mn은 Fe의 석출 형태를 소형 입상화한 Al-Fe-Si-Mn계 화합물로 바꾸어 압력 인가에 의해 기공압궤 작용을 일으켜 기공 발생을 줄이는 역할을 수행한다. In addition, a large amount of Fe increases the effect of acicular Al-Fe-Si compound that causes pore generation during casting, which may cause a lot of porosity during casting, Mn is a form of precipitation of Fe It transforms into a small granulated Al-Fe-Si-Mn-based compound, which causes pore collapse by applying pressure to reduce pore generation.

또한, Ni는 Al3Ni나 AlCuNi를 형성하여 고온 강도를 증대시키는 역할을 수행하며, 상기 범위를 벗어나 소량 함유되면 이러한 효과가 적고 과량 함유되면 인성 저하를 일으키는 문제가 야기될 수 있으며, Cr은 Si를 미세화하고 균질하게 분산시켜 경도 및 기계적 성질을 우수하게 하는 역할을 수행하지만, 상기 범위를 벗어나 과량 함유 시에는 주조성이 저하되는 문제가 있다.In addition, Ni serves to increase the high-temperature strength by forming Al 3 Ni or AlCuNi, if contained in a small amount outside the above range is less such effect, and if contained in excess may cause a problem of deterioration of toughness, Cr is Si Although the micronized and homogeneously dispersed to serve to improve the hardness and mechanical properties, there is a problem that the castability is lowered when the excess content exceeds the above range.

본 발명에 따른 조성물은 Si 16-18 중량%, Cu 4-5 중량%, Mg 0.5-0.65 중량%, Zn 1.5 중량% 이하, Fe 0.2-0.5 중량%, Mn 0.4-0.6 중량%, Ni 0.2-1.0 중량%, Cr 0.05-0.25 중량% 및 잔부의 Al로 이루어지는 것이 보다 바람직하다.The composition according to the invention comprises Si 16-18% by weight, Cu 4-5% by weight, Mg 0.5-0.65% by weight, Zn 1.5% by weight or less, Fe 0.2-0.5% by weight, Mn 0.4-0.6% by weight, Ni 0.2- It is more preferable that it consists of 1.0 weight%, Cr 0.05-0.25 weight%, and remainder Al.

본 발명에 따른 조성물로 다이캐스팅 후 열처리 시 경도는 HRB 80 이상이며, 상기 조성물로 주물 제작 후 열처리 시 경도는 HRB 85 이상인 것이 바람직하다.Hardness at the time of heat treatment after die casting with the composition according to the present invention is preferably HRB 80 or more, and hardness at the time of heat treatment after the casting is manufactured with the composition is preferably HRB 85 or more.

또한, 본 발명은 상기 조성물을 외경면이 주물사와 접촉된 상태로 다이캐스팅 공법을 이용하여 실린더 블록을 주조하여 제조한 것을 특징으로 하는 자동차 공조기용 압축기의 실린더 블록의 제조방법을 제공한다. The present invention also provides a method for manufacturing a cylinder block of a compressor for an automobile air conditioner, wherein the composition is manufactured by casting a cylinder block using a die casting method while the outer diameter surface is in contact with the foundry sand.

본 발명에 따라 제조된 자동차 공조기용 압축기의 실린더 블록은 피스톤을 철계 금속으로 제작함에도 불구하고 실린더 블록 보어 마모를 최소화 할 수 있으며, 특히 기존 알루미늄 소재 예를들어, ADS16종으로 제조된 실린더 블록보다 경도가 증가되고, 내마모성도 향상될 뿐 아니라, 폴리싱 처리 시 매우 좋은 면 조도와 좋은 가공성을 확보할 수 있다.The cylinder block of the compressor for an automotive air conditioner manufactured according to the present invention can minimize the wear of the cylinder block bore, even though the piston is made of iron-based metal, and in particular, the hardness of the cylinder block made of, for example, ADS16. In addition, the wear resistance is also improved, and in the polishing process, very good surface roughness and good workability can be obtained.

본 발명에 따른 소재 조성물을 이용하여 제조된 자동차 공조기용 압축기의 실린더 블록은 기존의 알루미늄 소재를 이용하여 제조된 실린더 블록에 비해 증가된 경도, 내마모성 및 가공성을 제공할 수 있다.The cylinder block of the compressor for an automobile air conditioner manufactured using the material composition according to the present invention may provide increased hardness, wear resistance, and workability compared to a cylinder block manufactured using a conventional aluminum material.

도 1은 기존 소재(ADS16종)에 의해 제조된 실린더 블록의 마모 상태를 나타낸 사진이고,
도 2는 본 발명의 일실시예에 따라 제조한 실린더 블록의 마모 상태를 나타낸 사진이다.1 is a photograph showing the wear state of the cylinder block manufactured by the existing material (16 kinds of ADS),
Figure 2 is a photograph showing the wear state of the cylinder block manufactured according to an embodiment of the present invention.

이하, 하기 실시예를 통해 본 발명을 보다 상세하게 설명한다. 다만, 이러한 실시예에 의해 본 발명이 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the present invention is not limited by these examples.

<실시예 1> 자동차 공조기용 압축기의 실린더 블록 제조Example 1 Manufacture of Cylinder Block of Automobile Air Conditioning Compressor

뜨거운 로에 Si 18 중량%, Cu 5 중량%, Mg 0.65 중량%, Zn 1.0 중량%, Fe 0.5 중량%, Mn 0.6 중량%, Ni 1.0 중량%, Cr 0.25 중량% 및 잔부의 Al을 넣고 녹였다. 이렇게 녹인 금속 액체를 금형에 압력으로 밀어넣어 실린더 블록을 제조하였다.In a hot furnace, 18 wt% of Si, 5 wt% of Cu, 0.65 wt% of Mg, 1.0 wt% of Zn, 0.5 wt% of Fe, 0.6 wt% of Mn, 1.0 wt% of Ni, 0.25 wt% of Cr and the balance of Al were dissolved. The melted metal liquid was pushed into the mold under pressure to prepare a cylinder block.

<실시예 2> 자동차 공조기용 압축기의 실린더 블록 제조Example 2 Manufacture of Cylinder Block of Automobile Air Conditioning Compressor

뜨거운 로에 Si 16 중량%, Cu 4 중량%, Mg 0.5 중량%, Zn 0.1 중량%, Fe 0.2 중량%, Mn 0.4 중량%, Ni 0.2 중량%, Cr 0.05 중량% 및 잔부의 Al을 넣고 녹였다. 이렇게 녹인 금속 액체를 금형에 압력으로 밀어넣어 실린더 블록을 제조하였다.In a hot furnace, 16 wt% Si, 4 wt% Cu, 0.5 wt% Mg, 0.1 wt% Zn, 0.2 wt% Fe, 0.4 wt% Mn, 0.2 wt% Ni, 0.05 wt% Cr and the balance Al were dissolved. The melted metal liquid was pushed into the mold under pressure to prepare a cylinder block.

<실험예 1> 자동차 공조기용 압축기의 실린더 블록의 물성 시험Experimental Example 1 Physical Properties Test of Cylinder Block of Compressor for Automobile Air Conditioner

1. 경도 평가1. Hardness evaluation

실시예에서 제조한 자동차 공조기용 압축기의 실린더 블록과 기존 알루미늄계 소재(ADS16종)로 제조된 실린더 블록 간의 경도를 비교하기 위하여, 로크웰 경도 시험법(KS B 0806:2000)에 의거하여 경도를 측정하였다.In order to compare the hardness between the cylinder block of the automobile air conditioner compressor manufactured in the embodiment and the cylinder block made of a conventional aluminum-based material (16 kinds of ADS), the hardness was measured based on the Rockwell hardness test method (KS B 0806: 2000). It was.

그 결과, 기존 소재(ADS16종)에 의해 제조된 실린더 블록의 경도는 HRB 55 수준이었으나, 실시예에서 제조한 실린더 블록의 경도는 HRB 85-90 수준을 나타내었다.As a result, the hardness of the cylinder block manufactured by the existing material (16 kinds of ADS) was HRB 55 level, the hardness of the cylinder block produced in the Example showed an HRB 85-90 level.

2. 내마모성 평가2. Wear resistance evaluation

실시예에서 제조한 자동차 공조기용 압축기의 실린더 블록과 기존 알루미늄계 소재(ADS16종)로 제조된 실린더 블록 간의 내마모성을 평가하였다.The wear resistance between the cylinder block of the air conditioner compressor manufactured in Example and the cylinder block made of the existing aluminum-based material (ADS16 type) was evaluated.

도 1과 같이, 기존 소재(ADS16종)에 의해 제조된 실린더 블록은 깊은 스크레치 발생으로 실린더 보어 내부의 마모가 심한 것을 확인할 수 있었고, 도 2와 같이, 실시예에서 제조한 실린더 블록은 실린더 보어 내부에 약간의 마모는 있으나 안정화 이후 마모가 없는 것으로 확인되었고, 또한 기존 소재와 달리 폴리싱 처리시 매우 좋은 면 조도를 나타내었다.As shown in FIG. 1, the cylinder block manufactured by the existing material (16 types of ADS) was found to have severe wear in the cylinder bore due to deep scratch generation. As shown in FIG. 2, the cylinder block manufactured in the embodiment has a cylinder bore inside. Although there was some wear on the fabric, it was confirmed that there was no wear after stabilization, and it showed very good surface roughness when polishing, unlike the existing material.

Claims (5)

Si 10-20 중량%, Cu 2-7 중량%, Mg 0.3-0.9 중량%, Zn 0.0001-1.5 중량%, Fe 0.1-0.7 중량%, Mn 0.2-0.8 중량%, Ni 0.1-1.2 중량%, Cr 0.02-0.3 중량% 및 잔부의 Al로 이루어진 자동차 공조기용 압축기의 실린더 블록용 소재 조성물.Si 10-20 wt%, Cu 2-7 wt%, Mg 0.3-0.9 wt%, Zn 0.0001-1.5 wt%, Fe 0.1-0.7 wt%, Mn 0.2-0.8 wt%, Ni 0.1-1.2 wt%, Cr A material composition for a cylinder block of a compressor for an automotive air conditioner, consisting of 0.02-0.3% by weight and the balance of Al. 청구항 1에 있어서, 상기 조성물은 Si 16-18 중량%, Cu 4-5 중량%, Mg 0.5-0.65 중량%, Zn 0.0001-1.5 중량%, Fe 0.2-0.5 중량%, Mn 0.4-0.6 중량%, Ni 0.2-1.0 중량%, Cr 0.05-0.25 중량% 및 잔부의 Al로 이루어진 자동차 공조기용 압축기의 실린더 블록용 소재 조성물.The composition of claim 1, wherein the composition comprises Si 16-18 wt%, Cu 4-5 wt%, Mg 0.5-0.65 wt%, Zn 0.0001-1.5 wt%, Fe 0.2-0.5 wt%, Mn 0.4-0.6 wt%, A material composition for a cylinder block of a compressor for an automotive air conditioner, consisting of 0.2-1.0 wt% Ni, 0.05-0.25 wt% Cr and the balance Al. 청구항 1에 있어서, 상기 조성물로 다이캐스팅 후 열처리 시 경도는 HRB 80 이상인 자동차 공조기용 압축기의 실린더 블록용 소재 조성물.The material composition for a cylinder block of the compressor for an automotive air conditioner according to claim 1, wherein the hardness of the composition after die casting with the composition is HRB 80 or more. 청구항 1에 있어서, 상기 조성물로 주물 제작 후 열처리 시 경도는 HRB 85 이상인 자동차 공조기용 압축기의 실린더 블록용 소재 조성물.The material composition for a cylinder block of the compressor for an automotive air conditioner of claim 1, wherein the hardness of the heat treatment after the casting is manufactured with the composition is HRB 85 or more. 청구항 1 내지 청구항 4 중 어느 한 항에 따른 조성물을 외경면이 주물사와 접촉된 상태로 다이캐스팅 공법을 이용하여 실린더 블록을 주조하여 제조한 것을 특징으로 하는 자동차 공조기용 압축기의 실린더 블록의 제조방법.The method of manufacturing a cylinder block of a compressor for an automotive air conditioner, wherein the composition according to any one of claims 1 to 4 is produced by casting a cylinder block by using a die casting method while the outer diameter surface is in contact with the foundry sand.
KR1020100004033A 2010-01-15 2010-01-15 Composition of cylinder block for compressor in automobile airconditioner KR20110084015A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10070515B2 (en) 2015-08-10 2018-09-04 Samsung Electronics Co., Ltd. Transparent electrode using amorphous alloy and method of manufacturing the same
CN109022949A (en) * 2018-09-17 2018-12-18 黄勇洪 A kind of energy-saving heat preserving bridge-cut-off aluminium alloy
CN112317716A (en) * 2020-09-28 2021-02-05 浙江茸创机械制造有限公司 Die casting process for automobile air conditioner compressor shell
CN116024482A (en) * 2022-11-17 2023-04-28 大连科天新材料有限公司 High-strength and high-yield die-casting aluminum-silicon alloy, and preparation method and application thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10070515B2 (en) 2015-08-10 2018-09-04 Samsung Electronics Co., Ltd. Transparent electrode using amorphous alloy and method of manufacturing the same
CN109022949A (en) * 2018-09-17 2018-12-18 黄勇洪 A kind of energy-saving heat preserving bridge-cut-off aluminium alloy
CN109022949B (en) * 2018-09-17 2019-12-06 黑龙江德誉达实业有限公司 Energy-saving heat-preservation bridge-cut-off aluminum alloy profile
CN112317716A (en) * 2020-09-28 2021-02-05 浙江茸创机械制造有限公司 Die casting process for automobile air conditioner compressor shell
CN116024482A (en) * 2022-11-17 2023-04-28 大连科天新材料有限公司 High-strength and high-yield die-casting aluminum-silicon alloy, and preparation method and application thereof

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