KR20020093411A - Method of manufacture brake di sc for cast material and therefore - Google Patents

Method of manufacture brake di sc for cast material and therefore Download PDF

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Publication number
KR20020093411A
KR20020093411A KR1020010032158A KR20010032158A KR20020093411A KR 20020093411 A KR20020093411 A KR 20020093411A KR 1020010032158 A KR1020010032158 A KR 1020010032158A KR 20010032158 A KR20010032158 A KR 20010032158A KR 20020093411 A KR20020093411 A KR 20020093411A
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South Korea
Prior art keywords
brake
disc
cast iron
brake disc
brake disk
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KR1020010032158A
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Korean (ko)
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KR100391944B1 (en
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설기분
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설기분
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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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

PURPOSE: A brake disk for a cast iron and a method for manufacturing the brake disk are provided to suppress the vibration of a brake drum or a wheel and the breakage of a disk by manufacturing a brake disk through casting and to prevent the fade by promptly discharging the frictional heat through plural holes formed in the disk. CONSTITUTION: A brake disk shape mold is formed by using 300-400 mesh of molding sand. A cast iron composite constituted of 3.12wt% of carbon, 0.74wt% of manganese, 2.04wt% of silicon, 0.10wt% of sulfur, 0.072wt% of phosphor, 0.16wt% of chromium, 0.18wt% of copper, and iron is molten in a melting pot or a cupola. The temperature of the molten material is 1300-1500deg.C. The molten material is put into the mold and cooled for 20-30 minutes. The surface of the cast brake disk is treated by post processing. Many holes(11) are formed in the brake disk(10).

Description

주철제용 브레이크 디스크 및 그 제조방법{Method of manufacture brake di sc for cast material and therefore}Brake disc for cast iron and its manufacturing method {Method of manufacture brake di sc for cast material and therefore}

본 발명은 주철제용 브레이크 디스크 및 그 제조방법에 관한 것으로 브레이크 디스크를 주조방법을 이용하여 제조하는 브레이크 디스크 및 그 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cast iron brake disc and a method for manufacturing the same, and a brake disc for producing a brake disc using a casting method and a method for manufacturing the same.

일반적으로, 브레이크 디스크는 브레이크 로터라고도 불리우는 차량제동장치의 일부품으로써 차량의 휄(바퀴)허브에 볼트로 설치되어 바퀴와 함께 회전하며 브레이크 라이링과 접촉되어 제동력을 발생시키는 기능을 가진 것이다.In general, a brake disc is a part of a vehicle braking device, also called a brake rotor, which is bolted to a wheel hub of a vehicle, rotates with a wheel, and has a function of generating a braking force in contact with a brake laying ring.

재질로는 알루미늄 합금이나 강판등이 주로 사용되며, 일반적으로 브레이크 디스크는 제동력 발생시 600∼700℃정도의 마찰열 때문에 브레이크 라이링과 디스크 사이에 페이드(fade)현상이 나타나 제동력이 현저히 떨어지기 때문에 원둘레 직각 방향에 냉각핀이나 리브(rid)가 설치되거나 또는 양원판 사이에 통풍구멍이 설치되어 온도상승을 억제하는 역할을 하기도 한다.As a material, aluminum alloy or steel plate is mainly used.In general, the brake disc has a fade phenomenon between the brake lid and the disc due to frictional heat of about 600 ~ 700 ℃, and the braking force is significantly lowered. Cooling fins or ribs are installed in the direction, or vent holes are provided between the two discs, which may serve to suppress temperature rise.

이와같은 알루미늄 또는 강판 재질로 이루어진 브레이크 디스크(1)는 두개의 원판(디스크)(4)을 상호 맞댄 상태하에서 상호 원판(4) 표면에 형성된 복수개의 돌기부(5)끼리 서로 용접하므로써 원판과 원판사이에 일정 크기의 복수개의 통풍구멍(2)이 원둘레 방향으로 형성되므로써 브레이크 디스크(1)가 완성되는 것이다.The brake disc 1 made of such aluminum or steel sheet is formed by welding a plurality of protrusions 5 formed on the surface of the disc 4 with each other under a state where the two discs 4 are opposed to each other. The plurality of ventilation holes 2 having a predetermined size are formed in the circumferential direction so that the brake disc 1 is completed.

그러나, 이와같이 원판과 원판을 상호 용접방식에 의해 제조되는 브레이크 디스크는 장기간 계속적인 차량운행으로 원판(디스크)과 라이링과의 마찰열에 의해 원판(4)사이의 용접부(3)가 수축 팽창이 반복되어 떨어지거나 변형되어 브레이크 제어시 디스크에 떨림과 흔들림이 발생되는 문제점이 있고 원판 표면이 마모되는 현상도 나타난다.However, as described above, the brake disc manufactured by the welding method between the disc and the disc has a long and continuous vehicle operation, and the welding portion 3 between the disc 4 shrinks and expands due to frictional heat between the disc and the lid. There is a problem that the disk shakes and shakes when the brake is dropped or deformed, and the surface of the disc is worn out.

위와같은 문제점 발생원인은 브레이크 디스크(1)의 두개의 원판(4)사이에 있는 용접 돌기부(3,5)의 결착력이 마찰열에 의한 수축 팽창에 의해 감소되어 두개의 원판(4)을 지지하는 고정능력이 떨어져 발생되는 것이라 판단된다.The cause of the above problem is that the binding force of the welding protrusions 3 and 5 between the two discs 4 of the brake disc 1 is reduced by shrinkage expansion due to frictional heat to support the two discs 4. It is judged that the ability is caused by falling.

본 발명은 상술한 종래 두개의 원판을 상호 용접방식에 의해 제조되는 브레이크 디스크의 문제점을 해소하기 위해 안출한 것으로 주물사를 이용한 사형주조방법으로 주철제 브레이크 디스크 및 그 제조방법을 제공함에 그 목적이 있다.An object of the present invention is to provide a cast iron brake disk and a method for manufacturing the same as a sand casting method using a molding sand, which is devised to solve the problems of the brake disk manufactured by the mutual welding method.

도 1 : 강판제 브레이크 디스크의 사시도.1: A perspective view of a brake disc made of steel sheet.

도 2 : 강판제 브레이크 다스크의 분해사시도.2: An exploded perspective view of a brake dask made of steel sheet.

도 3 : 본 발명인 주철제 브레이크 디스크의 사시도.3 is a perspective view of a cast iron brake disc of the present inventors.

도 4 : 본 발명 주철제 브레이크 디스크 제조 공정도.4 is a process chart of the present invention cast iron brake disk.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1, 10 : 브레이크 디스크 2, 13 : 통풍구1, 10: brake discs 2, 13 vent holes

3 : 용접부 4, 12 : 원판3: welded part 4, 12: disc

5, 14 : 돌기부 11 : 구멍5, 14 projection 11: hole

이에 본 발명은 이와같은 문제점을 해소하기 위해 발명된 것으로, C 3.12중량%, Mn 0.74중량%, Si 2.04중량%, S 0.10중량%, P 0.072중량%, Cr 0.16중량%, Cu 0.18중량%, 잔부는 Fe인 주철소재를 도가니로 또는 용선로에서 1300 내지 1500℃정도로 용융하여 브레이크 디스크 형태로 제작된 사형몰드에 상기 용탕을 주입하여 주철제 브레이크 디스크를 제조한다.Therefore, the present invention was invented to solve such problems, C 3.12% by weight, Mn 0.74% by weight, Si 2.04% by weight, S 0.10% by weight, P 0.072% by weight, Cr 0.16% by weight, Cu 0.18% by weight, The remainder is melted to about 1300 to 1500 ℃ in a crucible or molten iron in a cast iron material of Fe to inject the molten metal into a sand mold produced in the form of a brake disc to produce a cast iron brake disc.

몰드제작과정은 300∼400매쉬 정도의 주물사로 브레이크 디스크(10) 형상의 몰드로 성형하는데 이때 레진 또는 접착제같은 결합제를 주물사에 섞으므로써 몰드가 일정 형상을 유지할 수 있다.In the mold manufacturing process, the molding sand of 300-400 mesh is formed into the mold of the brake disc 10 shape, and the mold can maintain a constant shape by mixing a binder such as a resin or an adhesive into the molding sand.

이렇게 제조된 몰드를 300∼500℃정도의 가열로에 넣고 10∼20분 정도 소성하면 1500℃정도의 용탕을 주입하여도 몰드가 소실 또는 파손되지 않는다.When the mold thus prepared is put into a heating furnace at about 300 to 500 ° C. and calcined for about 10 to 20 minutes, the mold is not lost or broken even when a molten metal at about 1500 ° C. is injected.

몰드에 용탕이 주입되고 난 후 20∼30분동안 유지한 후, 냉각이 완료되면 몰드를 해체하게 되며 브레이크 디스크 통풍구(13), 구멍(11) 및 표면(12)에 묻은 주물사를 제거하고 후처리 공정을 거치면 주철제 브레이크 디스크(10)가 완성된다.After the molten metal is injected into the mold, it is held for 20 to 30 minutes, and when the cooling is completed, the mold is dismantled, and after removing the found sand from the brake disk vent 13, the hole 11 and the surface 12, After the process, the cast iron brake disc 10 is completed.

해체된 몰드는 재생처리를 거쳐 주물사로 재사용된다.The disassembled mold is recycled and reused as foundry sand.

이와같은 공정에 의해 제조된 주철제용 브레이크 디스크는 표면경도가 HB 187∼215 정도이고 압축강도가 207 N/㎟ 정도의 기계적 성질을 갖추고 있으며, 주철조직은 흑연형태가 A형 89%, C+D,E형 11%의 분산조직 형태의 고강력 내열주철로 된다.The cast iron brake discs manufactured by this process have mechanical properties with surface hardness of about 187 to 215 and compressive strength of about 207 N / mm2, and cast iron structure of graphite type A 89% and C + D. It is made of high strength heat-resistant cast iron in the form of dispersed structure of 11% of E type.

후처리 공정을 거친 주철제 브레이크 디스크는 외관이 미세기공 또는 요철면등이 전혀 없는 매끄러운 표면상태를 유지한다.The cast iron brake disc, which has undergone the post-treatment process, maintains a smooth surface without any micropores or irregularities.

이와같은 과정을 거쳐 주철제용 브레이크 디스크를 제조하나 브레이크 디스크의 원판에 3∼5㎜직경의 구멍(11)을 원형으로 복수개 형성한 주철제 브레이크 디스크도 제조 가능하다.Through such a process, a cast iron brake disc is manufactured, but cast iron brake discs in which a plurality of holes 11 having a diameter of 3 to 5 mm are formed in a circle in the disc of the brake disc can also be manufactured.

위와같이 원판에 복수개의 구멍(11)을 형성한 브레이크 디스크는 원판에 브레이크 라이링 패드가 압착되어 600∼700℃ 정도의 마찰열이 발생되면 상기 마찰열이 구멍을 거쳐 통풍구를 통하여 외부로 배출되므로 브레이크 디스크 자체의 온도감소 효과가 있어 브레이크 제동시 페이드(fade)현상이 전혀 나타나지 않는 장점이 있다.As described above, a brake disc having a plurality of holes 11 formed in a disc has a frictional heat of about 600 to 700 ° C. when the brake laying pad is squeezed on the disc, so that the friction heat is discharged to the outside through the vent through the hole. It has the effect of reducing its own temperature, so it does not show any fade when braking.

그리고, 원판과 원판을 일정간격 유지하여 주는 돌기부(14)도 원판(12)사이에 일체로 고정되어 있어 마찰열에 의한 반복된 수축 팽창으로도 균열이나 떨어짐등이 전혀 나타나지 않는다.In addition, the protrusion 14 which maintains the disc and the disc at regular intervals is also integrally fixed between the disc 12, so that no cracking or falling off occurs even after repeated shrinkage expansion by frictional heat.

이상에서 설명한 바와같이, 본 발명은 브레이크 디스크를 주철재질을 사용하여 주조방법에 의해 제조하므로써 강판을 용접방식에 의해 제조된 디스크에 비해 브레이크 드럼 또는 휄의 떨림현상과 디스크의 파손이 전혀없는 효과가 있으며 디스크 원판에 복수개의 구멍을 원형으로 배열 형성하므로써 브레이크 작동시에 마찰열을 통풍구를 통하여 외부로 신속히 배출하므로써 페이드(fade)현상이 전혀 없고 제동력이 뛰어난 효과가 있다.As described above, according to the present invention, the brake disc is manufactured using a cast iron material by a casting method, so that the vibration of the brake drum or wheel and the disk are not broken at all compared to the disc manufactured by the welding method. In addition, by forming a plurality of holes in the disk disc in a circular arrangement, the frictional heat is rapidly discharged to the outside through the vent when the brake is operated, so there is no fade phenomenon and the braking force is excellent.

Claims (2)

300∼400 매쉬 정도의 주물사로 브레이크 디스크 형상의 몰드를 제작하고, C 3.12중량%, Mn 0.74 중량%, Si 2.04중량%, S 0.10중량%, P 0.072중량%, Cr 0.16중량%, Cu 0.18중량%, 잔부는 Fe인 주철소재를 도가니 또는 용선로에서 용융하여 용탕온도를 1300∼1500℃로 하고,A brake disc-shaped mold was produced from a molding sand of about 300 to 400 meshes, 3.12 wt% C, 0.74 wt% Mn, 2.04 wt% Si, 0.10 wt% S, 0.072 wt% P, 0.16 wt% Cr, and 0.18 wt% Cu. %, The remainder is molten cast iron material in a crucible or molten iron furnace to make the molten metal temperature 1300-1500 ° C, 상기 주물사 몰드에 상기 용탕을 주입하여 20∼30분 정도 유지한 후 냉각하고 상기 몰드를 해체하여 주조완료된 브레이크 디스크의 표면을 가공하는 후처리 가공 공정을 거쳐 주철제 브레이크 디스크(10)를 제조하는 주철제 브레이크 디스크 제조방법.The cast iron brake for manufacturing the cast iron brake disc 10 through a post-treatment process of injecting the molten metal into the foundry sand mold and holding it for about 20 to 30 minutes, then cooling and dismantling the mold to process the surface of the cast brake disc. Disc manufacturing method. 브레이크 디스크(10)의 원판(12) 양면에 일정간격으로 복수개의 구멍(11)을 원형으로 배열 형성한 것을 특징으로 하는 주철제 브레이크 디스크.A cast iron brake disc, characterized in that a plurality of holes (11) are formed in a circular arrangement on both sides of the disc (12) of the brake disc (10) at regular intervals.
KR10-2001-0032158A 2001-06-08 2001-06-08 Method of manufacture brake di sc for cast material and therefore KR100391944B1 (en)

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WO2017176016A1 (en) * 2016-04-05 2017-10-12 자동차부품연구원 Brake disc and brake disc manufacturing method
KR20190054631A (en) * 2017-11-14 2019-05-22 르노삼성자동차 주식회사 Brake disc for reducing brake judder and method for manufacturing the same

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Publication number Priority date Publication date Assignee Title
KR980010003A (en) * 1996-07-23 1998-04-30 양재신 Automotive brake discs

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WO2017176016A1 (en) * 2016-04-05 2017-10-12 자동차부품연구원 Brake disc and brake disc manufacturing method
CN108883464A (en) * 2016-04-05 2018-11-23 韩国机动车技术研究所 Brake disc and braking disc manufacturing method
US10697508B2 (en) 2016-04-05 2020-06-30 Korea Automotive Technology Institute Brake disc and brake disc manufacturing method
CN108883464B (en) * 2016-04-05 2020-10-02 韩国机动车技术研究所 Brake disc manufacturing method
KR20190054631A (en) * 2017-11-14 2019-05-22 르노삼성자동차 주식회사 Brake disc for reducing brake judder and method for manufacturing the same

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