KR20000036256A - A method of producing sparking part of a sparking plug for diesel engine - Google Patents

A method of producing sparking part of a sparking plug for diesel engine Download PDF

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Publication number
KR20000036256A
KR20000036256A KR1020000008220A KR20000008220A KR20000036256A KR 20000036256 A KR20000036256 A KR 20000036256A KR 1020000008220 A KR1020000008220 A KR 1020000008220A KR 20000008220 A KR20000008220 A KR 20000008220A KR 20000036256 A KR20000036256 A KR 20000036256A
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KR
South Korea
Prior art keywords
tip
electrode
center electrode
welding
internal combustion
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KR1020000008220A
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Korean (ko)
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KR100311276B1 (en
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한상무
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엄병윤
세림공업 주식회사
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Priority to KR1020000008220A priority Critical patent/KR100311276B1/en
Publication of KR20000036256A publication Critical patent/KR20000036256A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/466—Charging device for converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D2021/0057—Security or safety devices, e.g. for protection against heat, noise, pollution or too much duress; Ergonomic aspects
    • F27D2021/0071—Security or safety devices, e.g. for protection against heat, noise, pollution or too much duress; Ergonomic aspects against explosions

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spark Plugs (AREA)

Abstract

PURPOSE: A method for producing an igniting unit in a lighting plug for an internal combustion is provided to improve durability and igniting property by not falling off a tip to the upper surfaces of a grounding electrode and a central electrode. CONSTITUTION: A circular welding electrode is formed for having a concave groove on the upper surface while settling a metal tip(290) of circular shape the groove on the welding electrode. Then, a central electrode(270) of an igniting plug is lowered to one surface of the tip for one side of the tip to insert to the central electrode and electrically welded for a first time. Then, a hammer shaped jig is lowered to the upper side of the welded tip for hammering the tip to have a coin like shape. And, a welding electrode(310) is lowered to the upper side of the tip on the upper surface of the central electrode for electrically welding for a second time. Moreover, the corner on the upper surface of the central electrode is cut for completing the igniting unit of a lighting plug for an internal combustion.

Description

내연기관용 점화플러그의 발화부의 제조방법{A method of producing sparking part of a sparking plug for diesel engine}A method of producing sparking part of a sparking plug for diesel engine

본 발명은 엔진의 연소실 내에 압축된 혼합기를 전기 불꽃으로 적절한 시기에 점화하여 연소시키는 내연기관용 점화플러그에 관한 것으로서, 보다 상세하게는 점화코일로부터 고압전류를 받아 중심전극의 팁과 접지전극의 팁 사이의 간극에서 불꽃을 발생할 수 있도록 한 내연기관용 점화플러그의 발화부의 제조방법에 관한 것이다.The present invention relates to an ignition plug for an internal combustion engine that ignites and combusts a mixer compressed in a combustion chamber of an engine at an appropriate time with an electric spark, and more particularly, between a tip of a center electrode and a tip of a ground electrode by receiving a high voltage from the ignition coil. The present invention relates to a method for manufacturing a ignition part of an ignition plug for an internal combustion engine, so that a spark can be generated in a gap of the internal combustion engine.

일반적으로 점화프러그는 각 실린더에 1개씩 배치되고, 점화코일에서 발생한 고압전류를 중심전극에 받아 접지전극과의 간극에 불꽃을 발생시켜 연소실 내에서 압축된 혼합가스를 점화, 연소시키는 작용을 한다.In general, one ignition plug is disposed in each cylinder, and receives a high-voltage current generated from the ignition coil to the center electrode to generate a spark in the gap with the ground electrode to ignite and combust the mixed gas compressed in the combustion chamber.

상기 불꽃이 튈때 점화플러그는 약 2000℃, 40kgf/㎠에 달하는 고온, 고압이 되고, 또 1만 볼트 이상 되는 고전압을 전극 간극에 도입시켜야 하므로 내열성, 절연성, 기밀성에서 뛰어나고 화학적으로도 안정되어야 한다.When the spark is off, the spark plug should be about 2000 ° C., high temperature and high pressure of 40 kgf / cm 2, and a high voltage of more than 10,000 volts should be introduced into the electrode gap, so that the spark plug should be excellent in heat resistance, insulation, airtightness, and chemically stable.

또한, 엔진의 회전상태에 따라 항상 전극부의 온도가 적절히 유지되어야 한다.In addition, the temperature of the electrode portion must be properly maintained at all times according to the rotational state of the engine.

도 1은 일반적인 내연기관용 점화플러그의 내부를 도시한 부분절개 단면도이다.1 is a partial cutaway cross-sectional view showing the inside of a general spark plug for an internal combustion engine.

도 1을 참조하면, 내연기관용 점화플러그(10)는 전극(electrode)(20)(30), 절연체(40), 셸(shell)(50)등으로 이루어져 있으며, 중심전극(20)과 접지전극(30) 사이에서 발생하는 불꽃을 이용하여 혼합기를 점화시키는 역할을 하고, 다른 부품들과 연동하여 기관의 작동상태에 결정적인 영향을 미친다.Referring to FIG. 1, the spark plug 10 for an internal combustion engine includes electrodes 20 and 30, an insulator 40, a shell 50, and the like, and a center electrode 20 and a ground electrode. It uses the spark generated between 30 to ignite the mixer, and in conjunction with other components has a decisive influence on the operating state of the engine.

상기 중심전극(20)은 봉형상으로 이루어져 있다.The center electrode 20 has a rod shape.

상기 점화플러그(10)의 재료로는 금속, 세라믹, 유리등이 사용되며, 단자전극봉(60), 절연체(40), 셸(50) 그리고 접지전극(30) 및 중심전극(20)등이 가장 중요한 부분이 된다.The spark plug 10 may be made of metal, ceramic, glass, and the like. The terminal electrode 60, the insulator 40, the shell 50, the ground electrode 30, the center electrode 20, and the like may be used. It becomes an important part.

또한, 상기 단자전극봉(60)은 특수도전체의 유리씰(미도시)에 의해 중심전극(20)과 결합되어 있으며, 절연체(40)와는 기밀을 유지할 수 있는 구조로 되어 있고, 단자부분은 고전압케이블이 설치될 수 있도록 단자결합부(70)가 성형되어 있는 구조로 되어 있다.In addition, the terminal electrode 60 is coupled to the center electrode 20 by a glass seal (not shown) of a special conductor, has a structure that can maintain the airtight with the insulator 40, the terminal portion is a high voltage The terminal coupling portion 70 is molded so that the cable can be installed.

상기 절연체(40)는 내열성, 절열성 그리고 기계적 강도가 큰 특수세라믹으로 중심전극(20)과 단자전극봉(60)을 셸(50)로부터 절연하는 역할을 수행하며, 절연체(40)의 표면을 매끄럽게 가공하여 여러개의 돌기부를 성형한 차단벽(미도시)은 습기와 먼지가 부착되지 못하여 전류의 누설을 방지하고, 누설전류의 이동경로를 길게하여 누설전류의 발생을 억제하는 역할을 수행한다.The insulator 40 is a special ceramic having high heat resistance, heat resistance, and mechanical strength, and insulates the center electrode 20 and the terminal electrode 60 from the shell 50, and smoothes the surface of the insulator 40. The blocking wall (not shown) formed by processing a plurality of protrusions prevents leakage of current by preventing moisture and dust from adhering and suppresses the occurrence of leakage current by lengthening the movement path of the leakage current.

상기 셸(50)은 절연체(40)를 보호하는 역할을 하며, 상부에는 렌치를 끼울수 있도록 6각부(80)로 되어 있으며, 하부는 설치용 나사부 및 기밀을 위한 가스킷(미도시)으로 되어 있다.The shell 50 serves to protect the insulator 40, the upper portion is made of a hexagonal portion 80 to insert a wrench, the lower portion is a mounting screw and a gasket (not shown) for airtight.

상기 전극은 중심전극(20)과 접지전극(30)으로 되어 있으며, 특히 점화플러그(10)의 점화성 및 내구성에 절대적으로 영향을 미치는 간극은 보통 0.7∼1.1㎜가 대부분이다.The electrode is composed of a center electrode 20 and a ground electrode 30, and most of the gaps which have an absolute effect on the ignition and durability of the spark plug 10 are usually 0.7 to 1.1 mm.

한편, 발화부(70)인 중심전극(20)과 접지전극(30)의 가운데 부분에 팁(100)이 전기 용접되어 있다.On the other hand, the tip 100 is electrically welded to the center portion of the center electrode 20 and the ground electrode 30, which is the ignition unit 70.

그러나, 종래의 내연기관용 점화플러그의 발화부인 중심전극의 팁과 접지전극의 팁은 단순히 상기 중심전극과 접지전극의 상면에 동공형의 구멍을 가공하여 팁을 용접하는 방법으로 사용되고 있기 때문에 상기 팁의 용접이 곤란한 문제점이 있었다.However, the tip of the center electrode and the tip of the ground electrode, which are the ignition parts of the conventional spark plug for an internal combustion engine, are simply used as a method of welding the tip by machining a hole in the upper surface of the center electrode and the ground electrode. There was a problem that welding was difficult.

또한, 시간이 경과함에 따라 상기 중심전극과 접지전극의 상면에 동공형의 구멍에 용접된 팁이 떨어지는 문제점이 있었다.In addition, as time passes, the tip welded to the hole of the hole on the upper surface of the center electrode and the ground electrode falls.

본 발명은 상기한 종래기술의 제반 문제점을 해결하기 위하여 안출한 것으로서, 본 발명의 목적은 중심전극과 접지전극의 상면에 팁이 떨어지지 않게하여 내구성 및 점화성이 향상되도록 한 내연기관용 점화플러그의 발화부의 제조방법을 제공함에 있다.The present invention has been made to solve the above problems of the prior art, an object of the present invention is to ignite the spark plug for the internal combustion engine so that the tip does not fall on the upper surface of the center electrode and the ground electrode to improve durability and ignition It is to provide a method for producing a wealth.

본 발명에 따른 내연기관용 점화플러그의 발화부의 제조방법의 특징은, 중심전극, 접지전극, 팁을 구비한 내연기관용 점화플러그의 발화부의 제조방법에 있어서, 상면에 오목한 홈을 갖는 원형의 용접전극을 형성함과 아울러 상기 용접전극의 홈에 원형의 귀금속의 팁을 안착시키는 단계와, 상기 점화플러그의 중심전극을 팁의 일면에 하강시키켜 상기 중심전극 속으로 팁의 일측이 들어가도록 1차 전기용접하는 단계와, 상기 중심전극과 용접된 팁의 상측에 햄머(hammer)형상을 갖는 지그를 하강시켜 동전모양의 형상을 갖도록 팁을 타격하는 단계와, 상기 중심전극 상면에 동전모양의 형상을 한 팁의 상측에 상기 용접전극을 하강시켜 재차 전기용접하는 단계와, 상기 중심전극의 상단면의 모서리를 절삭가공하는 단계를 포함하여 이루어진다.A method of manufacturing the ignition portion of an ignition plug for an internal combustion engine according to the present invention is characterized in that, in the method of manufacturing the ignition portion of an ignition plug for an internal combustion engine having a center electrode, a ground electrode, and a tip, a circular welding electrode having a concave groove on an upper surface thereof is used. Forming a tip of a circular noble metal in the groove of the welding electrode and lowering the center electrode of the spark plug to one side of the tip so as to enter one side of the tip into the center electrode. And lowering a jig having a hammer shape on the upper side of the tip welded to the center electrode to strike the tip to have a coin shape, and a tip having a coin shape on the upper surface of the center electrode. The welding electrode is lowered on the upper side of the electrode to be subjected to electrical welding again, and cutting the edge of the top surface of the center electrode.

도 1은 일반적인 내연기관용 점화플러그의 내부를 도시한 부분절개 단면도,1 is a partial cutaway cross-sectional view showing the interior of a spark plug for a general internal combustion engine,

도 2는 본 발명에 따른 내연기관용 점화플러그의 내부를 도시한 부분절개 단면도,2 is a partial cutaway cross-sectional view showing the interior of the spark plug for an internal combustion engine according to the present invention;

도 3a 내지 도 3f는 도 2의 발화부의 제조방법을 나타낸 제1실시예의 공정도,3a to 3f is a process diagram of a first embodiment showing a manufacturing method of the ignition unit of FIG.

도 4a 내지 도 4d는 도 2의 발화부의 제조방법을 나타낸 제2실시예의 공정도이다.4A to 4D are process diagrams of a second embodiment showing a manufacturing method of the ignition unit of FIG. 2.

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

210 : 단자결합부, 220 : 6각부,210: terminal coupling part, 220: hexagonal part,

230 : 발화부, 240 : 장착나사부,230: ignition part, 240: mounting screw part,

250 : 셸(250), 260 : 단자전극봉,250: shell 250, 260: terminal electrode,

270 : 중심전극, 280 : 접지전극,270: center electrode, 280: ground electrode,

290 : 팁.290: Tip.

이하, 본 발명에 따른 내연기관용 점화플러그의 발화부의 제조방법의 바람직한 일 실시예를 첨부한 도면을 참조하여 설명한다.Hereinafter, with reference to the accompanying drawings a preferred embodiment of a method of manufacturing a ignition portion of the spark plug for an internal combustion engine according to the present invention.

도 2는 본 발명에 따른 내연기관용 점화플러그의 내부를 도시한 부분절개 단면도이고, 도 3a 내지 도 3f는 도 2의 발화부의 제조방법을 나타낸 제1실시예의 공정도이며, 도 4a 내지 도 4d는 도 2의 발화부의 제조방법을 나타낸 제2실시예의 공정도이다.Figure 2 is a partial cutaway cross-sectional view showing the inside of the spark plug for the internal combustion engine according to the present invention, Figures 3a to 3f is a process diagram of a first embodiment showing a manufacturing method of the ignition part of Figure 2, Figures 4a to 4d 2 is a process chart of the second embodiment showing the manufacturing method of the ignition part 2. FIG.

도 2를 참조하면, 본 발명에 따른 내연기관용 점화플러그는 크게 단자결합부(210), 6각부(220), 발화부(230), 장착나사부(240), 셸(250), 유리씰(미도시), 차단벽(미도시), 단자전극봉(260)으로 이루어진다.Referring to Figure 2, the spark plug for the internal combustion engine according to the present invention is largely the terminal coupling portion 210, hexagonal portion 220, ignition portion 230, mounting screw portion 240, shell 250, glass seal (not shown) C), a blocking wall (not shown), and a terminal electrode rod 260.

상기 발화부(230)는 중심전극(270), 접지전극(280) 및 중심전극/접지전극의 팁(290)으로 이루어진다.The ignition unit 230 includes a center electrode 270, a ground electrode 280, and a tip 290 of the center electrode / ground electrode.

상기 중심전극/접지전극(270)(280)의 팁(290)의 재료로는 귀금속이 바람직하고, 특히 백금(Pt)으로 만들어짐이 바람직하다.The material of the tip 290 of the center electrode / ground electrode 270, 280 is preferably a noble metal, particularly made of platinum (Pt).

상기 발화부(230)인 중심전극(270)과 접지전극(280)의 상면에 팁(290)을 형성시키는 제조방법의 제1실시예를 도 3a ∼ 도 3f를 살펴보면, 상면에 오목한 홈(300)을 갖는 원형의 용접전극(310)을 형성함과 아울러 상기 용접전극(310)의 홈에 원형의 귀금속의 팁(290)을 도 3a에 도시된 바와같이 안착시킨다.Referring to FIGS. 3A to 3F, a first embodiment of a manufacturing method of forming the tip 290 on the upper surface of the center electrode 270 and the ground electrode 280 that is the ignition unit 230, the recess 300 is formed on the upper surface. In addition to forming a circular welding electrode 310 having a), the tip of the circular precious metal 290 is mounted in the groove of the welding electrode 310 as shown in Figure 3a.

이어, 점화플러그(200)의 중심전극(270)을 팁의 일면에 하강시키켜 도 3b에 도시된 바와같이 전기용접을 실시한다.Subsequently, the center electrode 270 of the spark plug 200 is lowered to one surface of the tip to perform electric welding as shown in FIG. 3B.

따라서, 상기 팁(290)의 일측이 도 3c에 도시된 바와같이 상기 중심전극(270) 속으로 들어가 1차 용접된다.Accordingly, one side of the tip 290 is first welded into the center electrode 270 as shown in FIG. 3C.

그리고 상기 중심전극(270)과 용접된 팁(290)의 상측에 도 3d에 도시된 바와같이 햄머(hammer)형상을 갖는 지그(320)를 하강시켜 동전모양의 형상을 갖도록 팁(290)을 타격한다.The jig 320 having a hammer shape is lowered on the upper side of the tip 290 welded to the center electrode 270 to strike the tip 290 to have a coin shape. do.

이어, 중심전극(270) 상면에 동전모양의 형상을 한 팁(290)의 상측에 상기 용접전극(310)을 하강시켜 도 3e에 도시된 바와같이 전기용접을 실시한다.Subsequently, the welding electrode 310 is lowered on the upper side of the tip 290 having a coin shape on the upper surface of the center electrode 270 to perform electric welding as shown in FIG. 3E.

따라서, 상기 팁(290)이 도 3f에 도시된 바와같이 중심전극(270)에 재차 용접된다.Thus, the tip 290 is again welded to the center electrode 270 as shown in Figure 3f.

그런후에, 상기 중심전극(270)의 상단면의 모서리를 도 3f에 도시된 바와같이 절삭가공한다.Thereafter, the edge of the top surface of the center electrode 270 is cut as shown in FIG. 3F.

상기 발화부(230)의 제조방법의 다른 실시예를 도 4a ∼ 도 4d를 살펴보면, 중심전극(270)의 하단부의 일면을 V자 형상의 홈(330)을 형성함과 아울러 상면에 홈(340)을 갖는 용접전극(310)을 형성한후, 상기 용접전극(310)의 홈(340)에 화살표 형상을 갖는 귀금속의 팁(290)을 도 4a에 도시된 바와같이 안착시킨다.4A to 4D, the V-shaped groove 330 is formed on one surface of the lower end of the center electrode 270, and the groove 340 is formed on the upper surface of the firing unit 230. After forming the welding electrode 310 having a), a tip 290 of a noble metal having an arrow shape in the groove 340 of the welding electrode 310 is seated as shown in Figure 4a.

이어, 상기 중심전극(270)의 V자 홈(330)에 도 4b에 도시된 바와같이 용접전극(310)에 설치된 화살표 형상을 갖는 귀금속의 팁(290)을 밀어 넣어 전기용접을 실시한다.Subsequently, an electric welding is performed by pushing a tip 290 of a noble metal having an arrow shape installed in the welding electrode 310 to the V-shaped groove 330 of the center electrode 270 as shown in FIG. 4B.

따라서, 상기 팁(290)의 일측이 도 4c에 도시된 바와같이 상기 중심전극(270) 속으로 들어가 1차 용접된다.Thus, one side of the tip 290 is first welded into the center electrode 270 as shown in Figure 4c.

그런후에, 상기 용접전극(310)을 상승시키면 도 4c에 도시된 바와같이 상기 팁(290)과 용접전극(310)이 분리된다.Then, when the welding electrode 310 is raised, the tip 290 and the welding electrode 310 are separated as shown in FIG. 4C.

이어, 상기 중심전극의 상단면의 모서리를 도 2d에 도시된 바와같이 절삭가공한다.Subsequently, the edge of the top surface of the center electrode is cut as shown in FIG. 2D.

이상에서 상세히 설명한 바와같이 본 발명은 귀금속의 중심전극/접지전극의 팁을 1차용접, 동전모양으로 압축, 2차용접의 공정을 통해 상기 팁이 아주 튼튼하게 결합되는 효과가 있다.As described in detail above, the present invention has an effect that the tip is very firmly coupled through a process of primary welding, compression into a coin shape, and secondary welding of the tip of the center electrode / ground electrode of the precious metal.

Claims (4)

중심전극, 접지전극, 팁을 구비한 내연기관용 점화플러그의 발화부의 제조방법에 있어서,In the manufacturing method of the ignition part of the spark plug for an internal combustion engine provided with the center electrode, the ground electrode, and the tip, 상면에 오목한 홈을 갖는 원형의 용접전극을 형성함과 아울러 상기 용접전극의 홈에 원형의 귀금속의 팁을 안착시키는 단계와;Forming a circular welding electrode having a concave groove on an upper surface thereof and seating a tip of a circular precious metal in the groove of the welding electrode; 상기 점화플러그의 중심전극을 팁의 일면에 하강시키켜 상기 중심전극 속으로 팁의 일측이 들어가도록 1차 전기용접하는 단계와;Lowering the center electrode of the spark plug to one surface of the tip to perform primary electrical welding so that one side of the tip enters the center electrode; 상기 중심전극과 용접된 팁의 상측에 햄머(hammer)형상을 갖는 지그를 하강시켜 동전모양의 형상을 갖도록 팁을 타격하는 단계와;Hitting the tip to have a coin shape by lowering a jig having a hammer shape on an upper side of the tip welded to the center electrode; 상기 중심전극 상면에 동전모양의 형상을 한 팁의 상측에 상기 용접전극을 하강시켜 재차 전기용접하는 단계와;Electrowelding again by lowering the welding electrode on the upper side of the tip having a coin shape on the center electrode; 상기 중심전극의 상단면의 모서리를 절삭가공하는 단계를 포함하여 이루어짐을 특징으로 하는 내연기관용 점화플러그의 발화부의 제조방법.And cutting the corners of the top surface of the center electrode to produce an ignition portion of an ignition plug for an internal combustion engine. 제 1 항에 있어서,The method of claim 1, 상기 중심전극의 하단부의 일면을 V자 형상의 홈을 형성함과 아울러 상면에 홈을 갖는 원형의 용접전극을 형성하여 상기 용접전극의 홈에 화살표 형상을 갖는 귀금속의 팁을 안착시키는 단계를 포함하여 이루어짐을 특징으로 하는 내연기관용 점화플러그의 발화부의 제조방법.Forming a V-shaped groove on one surface of the lower end of the center electrode and forming a circular welding electrode having a groove on an upper surface thereof to seat a tip of a precious metal having an arrow shape in the groove of the welding electrode; Method for producing a fire of the spark plug for the internal combustion engine, characterized in that made. 제 1 항에 있어서,The method of claim 1, 상기 중심전극의 V자 홈에 용접전극에 설치된 화살표 형상을 갖는 귀금속의 팁을 밀어 넣은 후 상기 팁의 일측이 상기 중심전극 속으로 들어가도록 1차 전기용접하는 단계와;First pushing the tip of the noble metal having an arrow shape installed in the welding electrode into the V-shaped groove of the center electrode so that one side of the tip enters the center electrode; 상기 팁과 용접전극이 분리한후 상기 중심전극의 상단면의 모서리를 절삭가공하는 단계를 포함하여 이루어짐을 특징으로 하는 내연기관용 점화플러그의 발화부의 제조방법.And cutting the corners of the top surface of the center electrode after the tip and the welding electrode are separated. 제 1 항에 있어서,The method of claim 1, 상기 팁은 백금으로 이루어진 것을 특징으로 하는 내연기관용 점화플러그의 발화부의 제조방법.The tip is a manufacturing method of the ignition portion of the spark plug for the internal combustion engine, characterized in that made of platinum.
KR1020000008220A 2000-02-21 2000-02-21 A method of producing sparking part of a spark plug for internal combustion engine KR100311276B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100973026B1 (en) * 2007-08-14 2010-08-03 주식회사 유라테크 Production method and apparatus of spark plug
KR101386111B1 (en) * 2008-10-01 2014-04-16 주식회사 유라테크 Spark plug and joing method for center electrode and electrode tip in the same

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KR100701571B1 (en) 2005-11-28 2007-03-29 주식회사 세림테크 Spark Plug

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DE3941649A1 (en) * 1989-12-16 1991-06-20 Bosch Gmbh Robert METHOD FOR PRODUCING ELECTRODES FOR SPARK PLUGS AND SPARK PLUG ELECTRODES

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100973026B1 (en) * 2007-08-14 2010-08-03 주식회사 유라테크 Production method and apparatus of spark plug
KR101386111B1 (en) * 2008-10-01 2014-04-16 주식회사 유라테크 Spark plug and joing method for center electrode and electrode tip in the same

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