KR100767640B1 - Method for joining consume resisting metal to cylinder block in swash plate pump - Google Patents

Method for joining consume resisting metal to cylinder block in swash plate pump Download PDF

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KR100767640B1
KR100767640B1 KR1020010086913A KR20010086913A KR100767640B1 KR 100767640 B1 KR100767640 B1 KR 100767640B1 KR 1020010086913 A KR1020010086913 A KR 1020010086913A KR 20010086913 A KR20010086913 A KR 20010086913A KR 100767640 B1 KR100767640 B1 KR 100767640B1
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South Korea
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cylinder block
copper alloy
alloy pipe
joining
alloy plate
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KR1020010086913A
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Korean (ko)
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KR20030056641A (en
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김상호
김기열
이범주
조정환
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주식회사 다윈프릭션
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2035—Cylinder barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/38—Electroplating: Baths therefor from solutions of copper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/20—Manufacture essentially without removing material
    • F05B2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/40—Heat treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

본 발명은 사축식 유압펌프용 실린더블록의 내마모재 접합방법을 제공한다. 본 발명의 접합방법은 동합금관과 동합금판을 제조하는 단다수의 보어 및 구면접촉부가 형성되도록 실린더블록을 기계 가공하는 단계와; 실린더블록의 보어에 동합금관을 강제 압입하는 단계와; 지그와 웨이트로 동합금판을 상기 실린더블록의 구면접촉부에 눌러 가압하는 단계와; 압착된 실린더블록의 보어와 동합금관, 실린더블록의 구면접촉부와 동합금판을 700℃ 내지 970℃에서 60분 내지 180분 동안 열처리하여 서로 접합시키는 접합 열처리 단계를 포함한다. 이러한 본 발명에 의하면, 실린더블록의 보어에 동합금관을 강제 압입하여 접합하되, 이를 700℃ 내지 970℃에서 60분 내지 180분 동안 열처리함으로써 동합금관의 윤활성을 저하시키지 않으면서 실린더블록에 안정적으로 접합시킬 수 있는 장점을 갖는다. 특히, 동합금관과 동합금판을 실린더블록에 동시에 접합할 수 있기 때문에 생산성이 향상되는 장점을 갖게 된다.The present invention provides a method for joining wear-resistant material of the cylinder block for a bent axis hydraulic pump. The joining method of the present invention includes the steps of machining the cylinder block to form a plurality of bores and spherical contact portions for producing the copper alloy pipe and the copper alloy plate; Forcing the copper alloy pipe into the bore of the cylinder block; Pressing the copper alloy plate with a jig and weight to the spherical contact portion of the cylinder block; The bore and the copper alloy tube of the compressed cylinder block, the spherical contact portion and the copper alloy plate of the cylinder block heat treatment at 700 ℃ to 970 ℃ for 60 minutes to 180 minutes, and comprises a joining heat treatment step. According to the present invention, the copper alloy pipe is press-fitted and bonded to the bore of the cylinder block, but it is stably bonded to the cylinder block without deteriorating the lubricity of the copper alloy pipe by heat-treating it at 700 ° C to 970 ° C for 60 minutes to 180 minutes. It has the advantage of being able to. In particular, since the copper alloy pipe and the copper alloy plate can be bonded to the cylinder block at the same time, the productivity is improved.

Description

사축식 유압펌프용 실린더블록의 내마모재 접합방법{METHOD FOR JOINING CONSUME RESISTING METAL TO CYLINDER BLOCK IN SWASH PLATE PUMP} Abrasion-resistant material joining method for cylinder shaft hydraulic pump {METHOD FOR JOINING CONSUME RESISTING METAL TO CYLINDER BLOCK IN SWASH PLATE PUMP}

도 1은 사축식 유압펌프용 실린더블록을 나타내는 단면도,1 is a cross-sectional view showing a cylinder block for a bent axis hydraulic pump;

도 2는 본 발명에 따른 사축식 유압펌프용 실린더블록의 내마모재 접합방법의 구성을 나타내는 블록도, Figure 2 is a block diagram showing the configuration of a wear-resistant material bonding method of the cylinder block for bent axis hydraulic pump according to the present invention,

도 3은 본 발명의 방법에 의해 제조되는 과정을 나타내는 실린더블록의 단면도, 3 is a cross-sectional view of a cylinder block showing a process manufactured by the method of the present invention;

도 4는 본 발명의 방법에 따라 접합된 실린더블록과 내마모재의 접합계면 현미경조직을 나타내는 단면도이다.4 is a cross-sectional view showing a bonded interface microscope structure of the cylinder block and the wear-resistant material bonded in accordance with the method of the present invention.

♣ 도면의 주요 부분에 대한 부호의 설명 ♣♣ Explanation of symbols for the main parts of the drawing ♣

10: 동합금관 20: 동합금판10: copper alloy pipe 20: copper alloy plate

30: 실린더블록 32: 보어30: cylinder block 32: bore

34: 구면접촉부 J: 지그34: Spherical contact part J: Jig

W: 웨이트W: Weight

본 발명은 사축식 유압펌프용 실린더블록의 내마모재 접합방법에 관한 것이다. The present invention relates to a wear-resistant material joining method of the cylinder block for bent axis hydraulic pump.

사축식 유압펌프는 도 1에 도시된 바와 같이 다수의 피스톤 (1a)을 갖는 지지판(1)과, 지지판(1)에 대해 소정각도를 이루며 배치되며 상기 피스톤(1a)이 왕복운동할 수 있도록 다수의 실린더(3a)를 갖는 실린더블록(3)과, 실린더블록(3)과 구면대우를 이루면서 실린더블록(3)의 실린더(3a)들과 연통되는 흡입포트(5a) 및 배출포트(5b)를 갖는 밸브플레이트(5)를 구비하고 있다. 이러한 유압펌프는 실린더블록(3)을 회전시켜 피스톤(1a)을 왕복운동시킴으로써 밸브 플레이트(5)의 흡입포트(5a)를 통해 실린더(3a)내로 유체를 흡입하고, 흡입된 유체를 다시 배출포트(5b)로 배출시킨다.As shown in FIG. 1, the bent axis hydraulic pump is disposed at a predetermined angle with respect to the support plate 1 having the plurality of pistons 1a and the support plate 1, and the plurality of pistons 1a can reciprocate. A cylinder block (3) having a cylinder (3a) and a suction port (5a) and a discharge port (5b) communicating with the cylinders (3a) of the cylinder block (3) while forming a spherical treatment with the cylinder block (3). The valve plate 5 which has is provided. Such a hydraulic pump rotates the cylinder block 3 to reciprocate the piston 1a to suck the fluid into the cylinder 3a through the suction port 5a of the valve plate 5, and discharge the sucked fluid back into the discharge port. Discharge to (5b).

한편, 실린더블록(3)의 실린더(3a) 및 밸브플레이트(5)와 접촉하는 실린더블록(3)의 구면접촉부(3b)는 상기 피스톤(1a)과 밸브플레이트(5)와 항상 마찰접촉하는 바, 내마모성이 요구된다. 따라서, 실린더블록(3)의 실린더(3a) 내벽과 구면접촉부(3b)에는 동합금(銅合金)재질의 내마모재(7)가 접합된다. 내마모재(7)는 구면접촉부(3b)의 경우, 동합금판(7b)을 구면접촉부(3b)에 접촉시킨 후, 열을 가하는, 이른 바 "액상확산접합 또는 고상확산접합"에 의한 방법에 의해 접합된다. 그리고 실린더(3a)의 경우, 동합금관(7a)을 실린더(3a)에 억지끼움하여 기계적인 죔쇠에 의해 접합된다. On the other hand, the spherical contact portion 3b of the cylinder block 3 in contact with the cylinder 3a and the valve plate 5 of the cylinder block 3 is always in frictional contact with the piston 1a and the valve plate 5. Wear resistance is required. Therefore, the wear-resistant material 7 made of copper alloy is joined to the inner wall of the cylinder 3a and the spherical contact portion 3b of the cylinder block 3. In the case of the spherical contact portion 3b, the wear-resistant material 7 contacts the copper alloy plate 7b to the spherical contact portion 3b, and then heats it by so-called " liquid diffusion bonding or solid phase diffusion bonding ". It is joined by the method. In the case of the cylinder 3a, the copper alloy pipe 7a is forcibly fitted to the cylinder 3a and joined by a mechanical clamp.

한편, 실린더(3a)의 내벽에 내마모재(7a)를 억지끼움하는 경우, 운행도중 접합강도가 약하여 실린더(3a)의 내벽으로부터 내마모재(7a)가 떨어진다는 단점이 지적되고 있다. On the other hand, when forcibly fitting the wear-resistant material 7a to the inner wall of the cylinder 3a, it is pointed out that the joining strength is weak during driving, and the wear-resistant material 7a falls from the inner wall of the cylinder 3a.

따라서, 본 발명은 상기한 문제점을 해결하기 위하여 안출된 것으로서, 그 목적은 실린더블록의 실린더와 구면접촉부에 내마모재를 동시에 접합시킬 수 있으면서 접합강도를 증강시킬 수 있는 사축식 유압펌프용 실린더블록의 내마모재 접합방법을 제공하는 데 있다. Therefore, the present invention has been made to solve the above problems, the object of which is the cylinder block for bent axis hydraulic pump that can increase the strength of the joint while simultaneously connecting the wear-resistant material to the cylinder and the spherical contact portion of the cylinder block To provide a method of joining wear-resistant materials of.

이와 같은 목적을 달성하기 위해 본 발명은 실린더블록의 실린더와 구면접촉부에 내마모재를 접합하는 방법에 있어서, 동합금관과 동합금판을 제조하는 단계와; 다수의 보어 및 구면접촉부가 형성되도록 실린더블록을 기계 가공하는 단계와; 상기 실린더블록의 보어에 동합금관을 강제 압입하는 단계와; 지그와 웨이트로 상기 동합금판을 상기 실린더블록의 구면접촉부에 눌러 가압하는 단계와; 압착된 실린더블록의 보어와 동합금관, 실린더블록의 구면접촉부와 동합금판을 700℃ 내지 970℃에서 60분 내지 180분 동안 열처리하여 서로 접합시키는 접합 열처리 단계를 포함하는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a method for joining a wear-resistant material to the cylinder and the spherical contact portion of the cylinder block, comprising the steps of: manufacturing a copper alloy tube and a copper alloy plate; Machining the cylinder block to form a plurality of bores and spherical contacts; Forcing a copper alloy pipe into the bore of the cylinder block; Pressing the copper alloy plate to a spherical contact portion of the cylinder block with a jig and weight; A bore and a copper alloy tube of the compressed cylinder block, the spherical contact portion and the copper alloy plate of the cylinder block is heat-treated at 700 ℃ to 970 ℃ for 60 minutes to 180 minutes, characterized in that it comprises a joining heat treatment step.

이하, 본 발명에 따른 사축식 유압펌프용 실린더블록의 내마모재 접합방법의 바람직한 실시예를 첨부 도면에 의거하여 상세히 설명한다. Hereinafter, a preferred embodiment of the wear-resistant material joining method of the cylinder block for bent axis hydraulic pump according to the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 사축식 유압펌프용 실린더블록의 내마모재 접합방법의 구성을 나타내는 블록도이며, 도 3은 본 발명의 방법에 의해 제조되는 과정을 나타내는 실린더블록의 단면도이고, 도 4는 본 발명의 방법에 따라 접합된 실린더블록과 내마모재의 접합계면 현미경조직을 나타내는 단면도이다. 먼저, 도 2와 도 3에 도시된 바와 같이 본 발명의 제조방법은 동합금관(10)과 동합금판(20)을 제조하는 단계를 포함한다(S101). 동합금관(10)과 동합금판(20)은 연청동 또는 인청동 또는 고력황동 등의 재질로 구성된다. 동합금관(10)은 연속주조 또는 사형주조에 의한 방법으로 제조되며, 동합금판(20)은 종래의 방법으로 제조된다. Figure 2 is a block diagram showing the configuration of the wear-resistant material bonding method of the cylinder block for bent axis hydraulic pump according to the present invention, Figure 3 is a cross-sectional view of a cylinder block showing a process manufactured by the method of the present invention, Figure 4 Is a cross-sectional view showing a bonded interface microscope structure of the cylinder block and the wear-resistant material bonded in accordance with the method of the present invention. First, the manufacturing method of the present invention as shown in Figures 2 and 3 includes the step of manufacturing a copper alloy tube 10 and the copper alloy plate 20 (S101). The copper alloy pipe 10 and the copper alloy plate 20 is made of a material such as lead bronze or phosphor bronze or high strength brass. The copper alloy pipe 10 is manufactured by the method of continuous casting or sand casting, and the copper alloy plate 20 is manufactured by the conventional method.

그리고 동합금관(10)과 동합금판(20)을 제조하는 동안, 실린더블록(30)을 구비하고, 구비된 실린더블록(30)을 기계 가공한다(S103). 기계 가공 단계(S103)는 실린더블록(30)에 다수의 보어(32)와 구면접촉부(34)를 형성하는 단계이다. 한편, 기계 가공하는 과정에서 상기 보어(32)의 내경(L)은 도 3에 도시된 바와 같이 동합금관(10)의 외경(ℓ)보다 작도록 가공되어야 한다. 즉, 보어(32)의 내경(L)을 동합금관(10)의 외경(ℓ)보다 작도록 함으로써 후술하는 바와 같이 보어(32)에 동합금 관(10)을 압입하는 과정에서 상기 동합금관(10)에 소정의 죔쇄량(t)이 발생토록 하기 위함이다. And while manufacturing the copper alloy pipe 10 and the copper alloy plate 20, provided with a cylinder block 30, the provided cylinder block 30 is machined (S103). Machining step (S103) is a step of forming a plurality of bores 32 and the spherical contact portion 34 in the cylinder block (30). On the other hand, the inner diameter (L) of the bore 32 in the process of machining should be processed to be smaller than the outer diameter (L) of the copper alloy pipe 10 as shown in FIG. That is, by making the inner diameter L of the bore 32 smaller than the outer diameter l of the copper alloy pipe 10, the copper alloy pipe 10 in the process of pressing the copper alloy pipe 10 into the bore 32 as described later. This is to cause a predetermined amount of clamping t to occur.

여기서, 죔쇄량(t)은 동합금관(10)의 외경(ℓ)에 대해 보어(32)의 내경(L)을 뺀 값, 즉 죔쇄량(t) = 동합금관의 외경(ℓ) - 보어의 내경(L)으로 나타나는데, 이러한 죔쇄량(t)은 보어(32)의 내주면에 대한 동합금관(10)의 압착강도를 증가시키는 역할을 한다. 한편, 죔쇄량(t)은 동합금관(10)의 성분비와 두께 등을 고려하여 강제 압입시 또는 접합 열처리시 실린더블록(30)과 동합금관(10)의 파손을 방지하도록 대략 0.02mm 내지 0.5mm범위를 갖도록 구성된다.Here, the clamping amount (t) is a value obtained by subtracting the inner diameter (L) of the bore 32 from the outer diameter (L) of the copper alloy pipe 10, that is, the clamping amount (t) = outer diameter (L) of the copper alloy pipe-of the bore. It is represented by the inner diameter (L), this clamping amount (t) serves to increase the compressive strength of the copper alloy pipe 10 with respect to the inner peripheral surface of the bore (32). On the other hand, the clamping amount (t) is approximately 0.02mm to 0.5mm to prevent breakage of the cylinder block 30 and the copper alloy tube 10 during forced press or joint heat treatment in consideration of the component ratio and thickness of the copper alloy tube 10, etc. Configured to have a range.

한편, 실린더블록(30)의 가공이 완료되면, 실린더블록(30)의 표면에 동도금 또는 니켈도금을 시행한다. 동도금 또는 니켈도금은 전기 도금에 의한 방법으로 실린더블록(30)의 표면에 도금되는데, 이같이 실린더블록(30)의 표면에 동도금 또는 니켈도금을 하면, 동합금관(10)과 동합금판(20)이 실린더블록(30)에 보다 원활하게 접합될 수 있다. On the other hand, when the machining of the cylinder block 30 is completed, copper plating or nickel plating is applied to the surface of the cylinder block 30. Copper plating or nickel plating is plated on the surface of the cylinder block 30 by the electroplating method. If copper plating or nickel plating is applied to the surface of the cylinder block 30, the copper alloy pipe 10 and the copper alloy plate 20 are The cylinder block 30 can be bonded more smoothly.

그리고 실린더블록(30)의 표면 도금이 완료되면, 실린더블록(30)의 보어(32)에 동합금관(10)을 강제 압입한다(S107). 여기서, 강제 압입 단계(S107)는 프레스에 의해 이루어지는데, 이때의 압입 속도는 동합금관(10)이 파손되지 않도록 천천히 이루어져야 한다. When the surface plating of the cylinder block 30 is completed, the copper alloy pipe 10 is forcibly pressed into the bore 32 of the cylinder block 30 (S107). Here, the forced indentation step (S107) is made by a press, the indentation speed at this time should be made so that the copper alloy pipe 10 is not damaged.

그리고 동합금관(10)의 강제 압입이 완료되면, 이어서 지그(J)와 웨이트(W)를 통하여 동합금판(20)을 실린더블록(30)의 구면접촉부(34)에 가압한다(S109). 즉, 실린더블록(30)의 구면접촉부(34)에 동합금판(20)을 올려놓은 다음, 그 위에 지그(J)와 웨이트(W)를 올려 동합금판(20)을 구면접촉부(34)에 눌러 가압하는 것이다. 물론, 지그(J)위에 동합금판(20)을 올려놓고, 동합금판(20)위에 실린더블록 (30)을 올려놓은 다음, 다시 실린더블록(30)의 상면에 웨이트(W)를 올려 놓음으로써 실린더블록(30)의 구면접촉부(34)와 동합금판(20)을 서로 압착시키는 것도 가능하다. 이때의, 압착력은 대략 5㎏f/㎠ 내지 10㎏f/㎠범위를 갖는 것이 바람직하다. 한편, 구면접촉부(34)와 접촉하는 지그(J)는 흑연재질로 구성되는데, 이는 지그(J)를 흑연으로 구성함으로써 이후의 열처리 단계에서 동합금판(20)과 지그(J)가 서로 접합되는 것을 방지하기 위함이다. When the forced press-in of the copper alloy pipe 10 is completed, the copper alloy plate 20 is then pressed to the spherical contact portion 34 of the cylinder block 30 through the jig J and the weight W (S109). That is, the copper alloy plate 20 is placed on the spherical contact portion 34 of the cylinder block 30, and then the jig J and the weight W are placed thereon to press the copper alloy plate 20 against the spherical contact portion 34. To pressurize. Of course, the copper alloy plate 20 is placed on the jig J, the cylinder block 30 is placed on the copper alloy plate 20, and then the weight W is placed on the upper surface of the cylinder block 30 again. It is also possible to press the spherical contact portion 34 and the copper alloy plate 20 of the block 30 to each other. In this case, the pressing force preferably has a range of approximately 5 kgf / cm 2 to 10 kgf / cm 2. On the other hand, the jig J in contact with the spherical contact portion 34 is made of a graphite material, which is composed of graphite to bond the copper alloy plate 20 and the jig J to each other in a subsequent heat treatment step. To prevent this.

한편, 동합금관(10)의 강제 압입과 동합금판(20)의 가압이 완료되면, 이어서 접합 열처리 단계(S111)를 시행한다. 접합 열처리 단계(S111)는 실린더블록(30)과 동합금관(10)과 동합금판(20)에 열을 가함으로써, 실린더블록(30)의 보어(32)와 구면접촉부(34)에 동합금관(10)과 동합금판(20)을 확산 접합시키는 단계이다. On the other hand, when the forced indentation of the copper alloy pipe 10 and the pressurization of the copper alloy plate 20 is completed, a subsequent joint heat treatment step (S111) is performed. Bonding heat treatment step (S111) is a copper alloy tube to the bore 32 and the spherical contact portion 34 of the cylinder block 30 by applying heat to the cylinder block 30, the copper alloy tube 10 and the copper alloy plate 20 10) and diffusion bonding the copper alloy plate 20.

이러한 접합 열처리 단계(S111)는 진공 분위기의 노(爐)에서 실시하며, 대략 700℃ 내지 970℃에서 60분 내지 180분 동안 실시해야 한다. 실험결과에 의하면, 실린더블록(30)와 동합금관(10) 그리고 실린더블록(30)과 동합금판(20)을 안정적으로 접합시킬 수 있으면서 동시에 동합금관(10)과 동합금판(20)이 윤활성을 잃지 않는 최적의 온도와 시간이 700℃ 내지 970℃이고, 60분 내지 180분으로 나타났다. This bonding heat treatment step (S111) is carried out in a furnace in a vacuum atmosphere, it should be carried out at about 700 ℃ to 970 ℃ 60 to 180 minutes. According to the test results, while the cylinder block 30 and the copper alloy pipe 10 and the cylinder block 30 and the copper alloy plate 20 can be stably joined, the copper alloy pipe 10 and the copper alloy plate 20 can be lubricated. The optimum temperature and time not to lose were from 700 ° C. to 970 ° C., from 60 minutes to 180 minutes.

한편, 접합 열처리 후, 접합된 실린더블록(30)과 동합금관(10) 및 동합금판 (20)은 냉각(S113)시켜야 하는데, 이때 대략 600℃까지는 노내 냉각(爐內冷却)하고, 그 이후에는 노에서 꺼내어 상온에서 서서히 냉각시킨다. 이는 실린더블록(30)과 동합금관(10) 및 동합금판(20)의 급격한 수축을 방지하여 실린더블록(30)과 동합금관(10) 및 동합금판(20)이 변형되는 것을 최대한 방지하기 위함이다. Meanwhile, after the joining heat treatment, the joined cylinder block 30, the copper alloy pipe 10, and the copper alloy plate 20 should be cooled (S113). In this case, the furnace block is cooled to about 600 ° C., and thereafter. Take out from the furnace and cool slowly at room temperature. This is to prevent the cylinder block 30 and the copper alloy pipe 10 and the copper alloy plate 20 to shrink sharply to prevent the cylinder block 30, the copper alloy pipe 10 and the copper alloy plate 20 to be deformed as much as possible. .

그리고 냉각 단계(S113)가 완료되면, 냉각된 실린더블록(30)을 기계 가공 처리한다(S115). 기계 가공 처리 단계(S115)는 동합금관(10)과 동합금판(20)이 접합된 실린더블록(30)의 내면 및 외면을 가공 및 연마 처리함으로써 정밀도를 높여준다.When the cooling step S113 is completed, the cooled cylinder block 30 is machined (S115). Machining process step (S115) increases the precision by machining and polishing the inner and outer surfaces of the cylinder block 30 to which the copper alloy pipe 10 and the copper alloy plate 20 are bonded.

이상에서와 같이 여러 단계를 통하여 실린더블록(30)에 접합된 동합금관(10)과 동합금판(20)은 도 3과 도 4에 도시된 바와 같이 높은 접합강도를 가지면서 접합된다. 특히, 동합금관(10)은 실린더블록(30)의 보어(32)에 안정적으로 접합될 수 있게 된다. As described above, the copper alloy pipe 10 and the copper alloy plate 20 bonded to the cylinder block 30 through various steps are joined with high bonding strength as shown in FIGS. 3 and 4. In particular, the copper alloy tube 10 can be stably bonded to the bore 32 of the cylinder block (30).

이상에서는 본 발명의 바람직한 실시예를 예시적으로 설명하였으나, 본 발명의 범위는 이와 같은 특정 실시예에만 한정되는 것은 아니며, 특허청구범위에 기재된 범주내에서 적절하게 변경 가능한 것이다.Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope of the claims.

이상에서 설명한 바와 같이 본 발명에 따른 사축식 유압펌프용 실린더블록의 내마모재 접합방법은 실린더블록의 보어에 동합금관을 강제 압입하여 접합하되, 이를 700℃ 내지 970℃에서 60분 내지 180분 동안 열처리함으로써 동합금관을 실린더블록에 안정적으로 접합시킬 수 있는 장점을 갖는다. 특히, 동합금관과 동합금판을 실린더블록에 동시에 접합할 수 있기 때문에 생산성이 향상되는 장점을 갖게 된다. As described above, the method of joining the wear-resistant material of the cylinder block for a bent axis hydraulic pump according to the present invention is by forcing a copper alloy pipe by pressing the bore of the cylinder block, and joining them at 700 ° C. to 970 ° C. for 60 minutes to 180 minutes. By heat treatment, the copper alloy pipe can be stably bonded to the cylinder block. In particular, since the copper alloy pipe and the copper alloy plate can be bonded to the cylinder block at the same time, the productivity is improved.

Claims (4)

실린더블록의 실린더와 구면접촉부에 내마모재를 접합하는 방법에 있어서, In the method of joining the wear-resistant material to the cylinder and the spherical contact portion of the cylinder block, 동합금관과 동합금판을 제조하는 단계와;Manufacturing a copper alloy pipe and a copper alloy plate; 다수의 보어 및 구면접촉부가 형성되도록 실린더블록을 기계 가공하는 단계와; Machining the cylinder block to form a plurality of bores and spherical contacts; 기계가공된 상기 실린더블록의 표면에 동 또는 니켈을 도금하는 단계와; Plating copper or nickel on the surface of the machined cylinder block; 상기 실린더블록의 보어에 동합금관을 강제 압입하는 단계와;Forcing a copper alloy pipe into the bore of the cylinder block; 지그와 웨이트로 상기 동합금판을 상기 실린더블록의 구면접촉부에 눌러 가압하는 단계와;Pressing the copper alloy plate to a spherical contact portion of the cylinder block with a jig and weight; 압착된 실린더블록의 보어와 동합금관, 실린더블록의 구면접촉부와 동합금판을 700℃ 내지 970℃에서 60분 내지 180분 동안 열처리하여 서로 접합시키는 접합 열처리 단계를 포함하는 것을 특징으로 하는 사축식 유압펌프용 실린더블록의 내마모재 접합방법.The bore and copper alloy pipe of the compressed cylinder block, spherical contact portion of the cylinder block and copper alloy plate heat treatment at 700 ℃ to 970 ℃ 60 minutes to 180 minutes, the joint heat treatment step characterized in that it comprises a bonding heat treatment step Method for joining wear resistant materials of cylinder block 제 1항에 있어서, 상기 강제 압입 단계에서 상기 동합금관은, 상기 동합금관의 외경에 대해 보어의 내경을 뺀 값인 죔쇄량이 0.02mm 내지 0.5mm범위가 되게 제작하여 압입하는 것을 특징으로 하는 사축식 유압펌프용 실린더블록의 내마모재 접합방법.The method of claim 1, wherein the copper alloy pipe in the forced indentation step, the bent-type hydraulic pressure, characterized in that the clamping amount is made to be in the range of 0.02mm to 0.5mm minus the inner diameter of the bore relative to the outer diameter of the copper alloy pipe Method for joining wear-resistant materials of a cylinder block for a pump. 제 1항에 있어서, 상기 가압 단계에서 상기 지그와 웨이트는 상기 동합금판을 5㎏f/㎠ 내지 10㎏f/㎠범위의 가압력으로 눌러 가압하는 것을 특징으로 하는 사축식 유압펌프용 실린더블록의 내마모재 접합방법.The method of claim 1, wherein the jig and the weight in the pressing step of the cylinder block for a four-axis hydraulic pump, characterized in that for pressing the copper alloy plate to a pressing force in the range of 5kgf / ㎠ to 10kgf / ㎠ How to join wear material. 삭제delete
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KR19990014348A (en) * 1998-09-23 1999-02-25 장래환 Diffusion fusion bonding method for bushing cylinder block for piston pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160032461A (en) 2014-09-16 2016-03-24 조정석 Manufacturing method of cylinder block for oil hydraulic pump
KR101694463B1 (en) * 2014-09-16 2017-01-09 조정석 Manufacturing method of cylinder block for oil hydraulic pump

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