KR20010077484A - axle housing casting method - Google Patents

axle housing casting method Download PDF

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Publication number
KR20010077484A
KR20010077484A KR1020000008367A KR20000008367A KR20010077484A KR 20010077484 A KR20010077484 A KR 20010077484A KR 1020000008367 A KR1020000008367 A KR 1020000008367A KR 20000008367 A KR20000008367 A KR 20000008367A KR 20010077484 A KR20010077484 A KR 20010077484A
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South Korea
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housing
casting
riser
risers
housings
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KR1020000008367A
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Korean (ko)
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KR100334840B1 (en
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주학지
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주학지
(주) 신명금속
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/06Permanent moulds for shaped castings
    • B22C9/065Cooling or heating equipment for moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/088Feeder heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/10Cores; Manufacture or installation of cores
    • B22C9/106Vented or reinforced cores

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE: A method for casting a housing for front and rear by arranging discharge space of impurities and gas during pouring molten metal and supplying a sufficient amount of molten metal during cooling is provided, which inhibits the generation of contraction cavity and prevents the generation of crack and bending caused by casting deformation. CONSTITUTION: In casting conventional housing for front and rear, a chiller(10) is installed at the four parts of a lower ring part(2a) of a housing and at the lower part of both end parts, four risers(21) are diagonally installed on an outer surface of the ring part, one riser(22) is installed in the central part of the housing, two to four auxiliary risers(23) are installed at the outside of the riser(22), one riser(24) is installed at the end part of both ends(1, 1a) of the housing, two risers(25) are installed at both sides of the riser(24), two risers(26) are installed at both sides of a pipe and a plus type reinforcing rod(27) is formed at the ring part of the lower opening part of the housing.

Description

엑셀하우징 주조방법{axle housing casting method}Excel housing casting method

본 발명은 엑셀하우징(프론트용과 리어용을 포함) 주조방법에 관한 것으로서, 더욱 상세히는 주로 중장비에 장착되는 각종의 부품중 주강제품으로 분류되는 프론트용 및 리어용 엑셀하우징 제작시 제품에 여타한 결함이 될 수 있는 요인들을 사전에 일소하여 높은 품질의 제품을 얻을 수 있도록 하는 주조방법을 제공코자 하는 것이다.The present invention relates to a method of casting an Excel housing (including a front and a rear), and more particularly, a defect in a product during manufacturing of an Excel housing for a front and a rear, which is mainly classified as a cast steel product, among various components mounted on heavy equipment. It is to provide a casting method that can eliminate the possible factors in advance to obtain a high quality product.

통상적으로 주조(casting)라 하면 금속제를 가열하여 용해시킨 쇳물(용탕)을 주형에 주입하여 일정한 형태를 갖도록 하고 서서히 식혀 굳힌 다음 후 가공을 통하여 완제품을 생산하는 작업방법이다.In general, casting (casting) is a method of working to produce a finished product by injecting molten metal (molten metal) by heating it into a mold to have a uniform shape, gradually cooling it, and then hardening it.

종래에는 이러한 일반적인 주조방법을 통하여 중장비에 사용되는 엑셀하우징을 생산하고 있으나 이는 주조시 제품내부에 GAS에 의한 결함(blow hole)과 수축공(SHRINKAGE), 불순게제물, 주조변형에 따르는 크랙 등으로 불량제품이 속출하여 경제적 손실뿐만 아니라 막대한 시간을 낭비하는 등 상당한 문제점이 있어 왔으며, 그 근본적인 문제해결 방안이 지금까지 전무하여 중장비 조립시 미세한 하자가 있다 하더라도 이를 그대로 사용할 수밖에 없음으로 향후 출고 후 사용시 수명이 짧고 여타한 충격에 쉽게 파손되는 불합리한 사례가 비일비지 하였다.Conventionally, it produces excel housings for heavy equipment through this general casting method, but this is due to blow holes, shrink holes, impurity products, cracks due to casting deformation, etc. There have been significant problems such as waste of huge time as well as economic loss due to successive products, and there is no fundamental problem solution until now, even if there are minute defects when assembling heavy equipment, they have no choice but to be used as they are. Irrational cases of breaking easily in these short and other shocks have been disturbed.

이러한 문제점을 극복하고 양질의 제품을 생산하기 위해서는 고도의 주조기술이 뒷받침되어야할 뿐만 아니라 주조방법 또한 개선하지 않으며 안 되는 것인데, 현재까지 만족할 만한 방안이 보고되지 않고 있는 실정이다.In order to overcome these problems and produce high-quality products, not only the advanced casting technology should be supported but also the casting method should not be improved, and satisfactory methods have not been reported to date.

이에 본 발명에서는 상기한 바와 같은 문제점을 일소 하기 위하여 발명한 것으로서 용탕 주입시 불순물과 GAS의 배출공간을 확보하여 불순 게제물과 GAS 결함이 제품에 발생되지 않도록 하고, 냉각되면서 수축이 이루어지는데, 이때 수축되는 만큼의 용탕을 충분히 공급될 수 있도록 하여 수축공 발생을 억제하며, 또한 수축시 주조변형으로 인한 크랙 및 휨발생을 방지할 수 있는 것에 주안점을 두고 본 발명의 기술적 과제로서 완성한 것이다.Therefore, in the present invention, as invented to eliminate the problems as described above to ensure the discharge space of impurities and GAS when injecting molten metal to prevent impurities and GAS defects to occur in the product, shrinkage while cooling, The present invention has been completed as a technical problem of the present invention with an emphasis on being able to sufficiently supply molten metal to shrink, thereby suppressing shrinkage hole generation and preventing cracks and warpage caused by casting deformation during shrinkage.

도 1은 본 발명에서 제공되는 하우징 중 프론트용 주형에 압탕과 보강대가 설치되는 상태도1 is a state in which the hot water and the reinforcement is installed in the mold for the front of the housing provided in the present invention

도 2는 도 1에서 제공되는 완성된 제품을 도시한 사시도Figure 2 is a perspective view of the finished product provided in Figure 1

도 3는 본 발명에서 제공되는 하우징 중 리어용 주형에 압탕과 보강대가 설치되는 상태도Figure 3 is a state in which the hot water and the reinforcement is installed in the rear mold of the housing provided in the present invention

도 4는 도 3에서 제공되는 완성된 제품을 도시한 사시도4 is a perspective view of the finished product provided in FIG.

* 도면의 주요부분에 사용된 부호의 설명 *Explanation of symbols used in the main part of the drawing

A:엑셀하우징 프론트용 B:억셀하우징리어용A: For Excel Housing Front B: For Accessory Housing

1,1a:관부 2:개구부1,1a: Pipe part 2: Opening part

2a:링부 10:냉금2a: ring portion 10: cold gold

20:용탕 21,22,23,24,25,26:압탕20: molten metal 21, 22, 23, 24, 25, 26: pressure

27:보강대 30:주형27: reinforcement 30: mold

31:탕로31: hot water

도 1은 본 발명에서 제공되는 하우징 중 프론트용 주형에 압탕과 보강대가 설치되는 상태도이고, 도 2는 도 1에서 제공되는 완성된 제품을 도시한 사시도이며, 도 3는 본 발명에서 제공되는 하우징 중 리어용 주형에 압탕과 보강대가 설치되는 상태도이고, 도 4는 도 3에서 제공되는 완성된 제품을 도시한 사시도로서, 이를 통하여 본 발명의 주조방법을 상세히 설명하면 다음과 같다.FIG. 1 is a state diagram in which a hot water bath and a reinforcing rod are installed in a mold for a front of the housing provided in the present invention, FIG. 2 is a perspective view showing the finished product provided in FIG. 1, and FIG. Figure 4 is a state diagram in which a pressure mold and a reinforcing rod are installed in the rear mold, and FIG. 4 is a perspective view illustrating the finished product provided in FIG. 3 and the casting method of the present invention will be described in detail as follows.

도 1 및 도3에서 도시된 바와 같은 대략 양단이 개방된 원통형상으로 형성되어 있으며, 양측으로 관부(1,1a)와 중앙 저면에 링부(2a)를 갖는 개구부(2)가 형성된 엑셀하우징 프론트용(A)과 리어용(B)을 주조기법으로 하여 제조함에 있어서,1 and 3 is formed in a cylindrical shape having approximately both ends are open, the Excel housing front is formed with an opening (2) having a pipe portion (1, 1a) and a ring portion (2a) on the central bottom on both sides In manufacturing by using casting method (A) and rear (B),

먼저 상기 하우징 저면 링부(2a) 4개소와 양끝단부 하측에 상기 하우징 재질과 동일한 금속의 냉금(10)을 설치하되, 상기 하우징(A,B)의 모델에 따라 크기와 형상이 조금씩 변화 될 수 있음으로 그 모양과 크기에 맞추어 적절하게 위치와 수량이 조절될 수 있는 것이며, 이는 용탕(20) 주입 후 응고과정에서 상기 냉금(10)이 설치된 부위부터 급냉될 수 있도록 한 것이다.First, the cold metal 10 of the same metal as the housing material is installed at the four housing bottom ring portions 2a and the lower ends of the housings, but the size and shape may be changed little by little depending on the models of the housings A and B. Position and quantity can be appropriately adjusted according to the shape and size, which is to be quenched from the site where the cold gold 10 is installed in the solidification process after the injection of the molten metal (20).

그리고 상기 하우징(A,B) 하측 링부(2a)의 외주연에 대각으로 4등분하여 4개의 압탕(21)과 상기 하우징(A,B) 상부 중앙으로 1개 압탕(22), 그 주위에 다소 크기가 적은 2∼4개의 보조압탕(23)이 각 설치되고, 상기 하우징(A,B) 양측 관부(1,1a) 끝단 상부에 압탕(24) 1개와, 그 양측으로 2개의 압탕(25), 상기 관부 중앙 양측으로 2개의 압탕(26)을 각 설치 하되, 이 또한 그 형상과 크기에 따라 설치되는 위치와 수량을 적절하게 선택될 수 있는 것이다.And it is divided into four equally diagonally to the outer periphery of the lower ring part 2a of the said housings A and B, and the four hot water 21 and one hot water 22 to the upper center of the said housings A and B, and a little around it. Two to four auxiliary baths 23 of small size are provided, respectively, one bath 24 above the ends of the pipes 1 and 1a on both sides of the housings A and B, and two baths 25 to both sides. In each of the two centers of the pipes 26 are installed in each of the centers, but this can also be appropriately selected the position and the number to be installed according to the shape and size.

상기한 압탕(21,22,23,24,25,26)은 용탕(20)이 냉금에 의하여 하부부터 급냉되는 과정에서 발생되는 GAS와 불순물들을 압탕(21,22,23,24,25,26)쪽으로 부상하게 하여 GAS는 배출되게 하고, 불순물은 압탕에 모이게 하여 제품에 GAS에 의한 결합 및 불순물 게제로 인한 결합이 없도록 함과 동시에 용탕의 응고시 수축에 따르는 용탕을 공급해 줌으로서 제품에 수축공이 생기지 않도록 하는 역할을 수행하게된다.The hot dips 21, 22, 23, 24, 25, 26 are hot dips (21, 22, 23, 24, 25, 26) of the GAS and impurities generated during the rapid cooling of the molten metal 20 from the bottom by cold. ) GAS is discharged and the impurities are collected in the pressure bath so that there is no binding due to GAS binding or impurity addition to the product, while supplying the melt along the shrinkage during solidification of the product. It plays a role of preventing it from happening.

또한 상기 하우징(A,B) 하부 개구부(2)의 링부(2a)에는 "+"형 보강대(27)를형성케 하여 응고과정에서 주조변형에 따른 크랙 등과 같은 결합이 발생되지 않도록 하였다.In addition, in the ring portion 2a of the lower opening 2 of the housings A and B, a “+” type reinforcing rod 27 is formed to prevent coupling such as cracks due to casting deformation during the solidification process.

상기한 구성상에서 탕구(미도시)에서 용탕(20)을 주입하게 되면 용탕(20)은 상기 탕구에서 탕로(31)를 거처 주형(30)에 용탕(20)이 고이면서 채워지게 된다. 이때 하부 내금부(10)가 설치된 부위부터 냉각이 시작되면서 하부부터 내부 건전도를 얻을 수 있도록 하고, 불순물은 상부로 부상하면서 압탕(21,22,23,24,25,26)쪽으로 이동되어 압탕내에 위치하게되며, 이러한 과정에서 발생되는 GAS 또한 압탕(21,22,23,24,25,26)을 거처 외부로 배출되게된다. 따라서 불순 게제물에 의한 결함과 GAS에 의한 결함이 전혀 발생되지 않도록 한다.When the molten metal 20 is injected into the molten metal in the above-described configuration, the molten metal 20 is filled with the molten metal 20 in the mold 30 by passing through the molten metal 31 in the molten metal. At this time, cooling starts from the site where the lower inner metal part 10 is installed, so that internal integrity can be obtained from the lower part, and impurities are moved to the pressure baths 21, 22, 23, 24, 25, and 26 while rising upward. It is located inside, and the GAS generated in this process is also discharged to the outside via the agitation (21, 22, 23, 24, 25, 26). Therefore, no defects caused by impurities or defects by GAS are generated.

이어 응고가 되면서 상당한 힘으로 수축이 이루어지는데, 상기 수축되는 만큼의 부족분을 상기 압탕(21,22,23,24,25,26)에서 공급됨으로 수축공이 발생되지 않도록 하였다.Subsequently, as the coagulation occurs, contraction occurs with a considerable force, and the deficiency as much as the contraction is supplied from the hot water (21, 22, 23, 24, 25, 26) so that shrinkage holes are not generated.

상기한 일련의 공정이 끝이 나면 주형에서 끄집어내어 모래를 제거한 후 압탕부와 보강대를 산소절단 등 여타 절단수단을 이용하여 절단한 다음 그라인딩(사상)과 도장(페인트)작업을 거처 완성품이 생산된다.At the end of the above series of processes, the sand is removed from the mold to remove sand, and the hot water section and the reinforcement table are cut by other cutting means such as oxygen cutting, and then finished (grinded) and painted (painted) to produce a finished product. .

이상에서 상세히 설명한 바와 같이 본 발명에서 제공하는 엑셀하우징 주조방법은 냉금을 이용하여 제품의 하부에서부터 냉각이 시작됨에 따라 내부 건전도를향상시키는데 이상적이며, 적정한 위치에 압탕, 보강대의 설치로 제품내부의 GAS에 의한 결함과 불순 게제물 및 수축공 발생 등을 미연에 방지할 뿐만 아니라 주조변형에 따른 크랙 현상과 같은 문제점을 해소함으로서 양질의 제품생산에 지대한 공헌을 할 것으로 기대되는 효과가 다대한 발명이다.As described in detail above, the excel housing casting method provided by the present invention is ideal for improving internal integrity as cooling starts from the lower part of the product using cold gold, and it can be installed in the product by installing a reinforcing rod in a proper position. It is a great invention that not only prevents defects, impurities, and shrinkage holes caused by GAS, but also solves problems such as cracks caused by casting deformation, and is expected to contribute to producing high quality products. .

Claims (1)

통상의 엑셀하우징 프론트용(A)과 리어용(B)을 주조함에 있어서,In casting the usual Excel housing front (A) and rear (B), 상기 하우징 저면 링부(2a) 4개소와 양끝단부 하측에 냉금(10)을 각 설치하는 것과; 상기 하우징(A,B) 하측 링부(2a)의 외주연에 대각으로 4등분하여 4개의 압탕(21)과 상기 하우징(A,B) 상부 중앙으로 1개의 압탕(22), 상기 압탕(22) 외측으로 크기가 적은 2∼4개의 보조압탕(23)이 각 설치되며, 상기 하우징(A,B) 양측 관부(1,1a) 끝단 상부에 압탕(24) 1개와, 상기 압탕(24) 양측으로 2개의 압탕(25), 상기 관부 중앙 양측으로 2개의 압탕(26)을 각 설치함과 동시에 상기 하우징(A,B) 하부 개구부(2)의 링부(2a)에는 "+"형 보강대(27)를 형성케 하여 주조하는 것을 특징으로 하는 엑셀하우징 주조방법.Providing each of the cold metals (10) at the four lower portions of the housing bottom ring portion (2a) and at both ends thereof; Divided into four diagonally at the outer periphery of the lower ring part 2a of the said housings A and B, the four hot water 21 and one hot water 22 to the center of the housings A and B, and the hot water 22 Two to four auxiliary pressure baths 23 each having a smaller size are provided on the outside, and one pressure bath 24 is provided on the upper ends of the pipe parts 1 and 1a on both sides of the housings A and B, and the pressure baths 24 to both sides. Two pressurizers 25 and two pressurizers 26 are provided on both sides of the center of the pipe part, and at the same time, the ring part 2a of the lower opening 2 of the housings A and B has a " + " Excel housing casting method characterized in that the casting to form.
KR1020000008367A 2000-02-02 2000-02-02 axle housing casting method KR100334840B1 (en)

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KR1020000008367A KR100334840B1 (en) 2000-02-02 2000-02-02 axle housing casting method

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103273013A (en) * 2013-06-04 2013-09-04 南方汇通股份有限公司 Method for preventing large-size cylindrical casting from elliptically deforming and casting
KR101350431B1 (en) * 2013-07-30 2014-01-15 한국차폐기술주식회사 A precision casting mold for comprehensive turbine housing by using a shell mold
CN113523192A (en) * 2021-06-23 2021-10-22 共享铸钢有限公司 Casting method of ball valve body
KR102385162B1 (en) * 2021-06-30 2022-04-11 주식회사 태양글로발 Casting method of vehicle axle box

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06104401B2 (en) * 1986-12-24 1994-12-21 いすゞ自動車株式会社 Rear axle case
DE19648213A1 (en) * 1996-11-21 1998-05-28 Zahnradfabrik Friedrichshafen Manufacturing process of axle bridge housings
KR20000004818A (en) * 1998-06-26 2000-01-25 이경자 High intensity paper mulberry tile piston casting method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103273013A (en) * 2013-06-04 2013-09-04 南方汇通股份有限公司 Method for preventing large-size cylindrical casting from elliptically deforming and casting
KR101350431B1 (en) * 2013-07-30 2014-01-15 한국차폐기술주식회사 A precision casting mold for comprehensive turbine housing by using a shell mold
CN113523192A (en) * 2021-06-23 2021-10-22 共享铸钢有限公司 Casting method of ball valve body
KR102385162B1 (en) * 2021-06-30 2022-04-11 주식회사 태양글로발 Casting method of vehicle axle box

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