JPS5813482A - Resistance welding method for sintered alloy material - Google Patents
Resistance welding method for sintered alloy materialInfo
- Publication number
- JPS5813482A JPS5813482A JP10978381A JP10978381A JPS5813482A JP S5813482 A JPS5813482 A JP S5813482A JP 10978381 A JP10978381 A JP 10978381A JP 10978381 A JP10978381 A JP 10978381A JP S5813482 A JPS5813482 A JP S5813482A
- Authority
- JP
- Japan
- Prior art keywords
- sintered alloy
- resistance welding
- gear
- vacuum
- spatter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/0006—Resistance welding; Severing by resistance heating the welding zone being shielded against the influence of the surrounding atmosphere
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は焼結合金材の抵抗溶接方法に関し、特にジーゼ
ル機関の分配型燃料噴射ポンプにおける焼結合金材で成
るギヤとフライウエートホルダとの抵抗溶接方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of resistance welding a sintered alloy material, and more particularly to a method of resistance welding a gear made of a sintered alloy material and a flyweight holder in a distribution type fuel injection pump for a diesel engine.
ジーゼル機関の分配型燃料噴射ポンプの部材、特にギヤ
とフライウエートホルダは量産性の要求から最近は焼結
合金材による成型品が用いられるようになり、この２部
材の接合は一般に抵抗溶接によって行われている。この
抵抗溶接は一方の部材の接合面に突起を形成しておき、
両部材を２電極間に挾んで加圧し、両電極に通電し、突
起と他方の部材との接触部の電気抵抗により接触部が加
熱溶融し溶接が行われるものである。しかしながら焼結
合金のような多孔性組織をもつ材料は内部空隙に空気を
吸収しており、上記抵抗加熱につれてこの空気が膨張し
、部材の接触部が半溶融状態になった時に噴出し溶融し
た母材を玉状に飛散させる。これがいをゆるスパッタで
、この現象は接合する２部材の熱容量の差が大きい場合
、加熱が急激な場合等において著しい。分配型燃料噴射
ポンプでは構成部材は燃料油中で作動されるため、部材
に付着するいささかの塵埃も燃料系のトラブルの原因と
なるから部材の組付は時十分な洗浄を行うのであるが、
このスパッタを完全に除去するのは極めて困難である。Due to demands for mass production, parts of diesel engine distribution fuel injection pumps, especially gears and flyweight holders, have recently come to be molded from sintered alloys, and these two parts are generally joined by resistance welding. It is being said. In this resistance welding, a protrusion is formed on the joint surface of one member,
Both members are sandwiched between two electrodes and pressurized, electricity is applied to both electrodes, and the contact portion is heated and melted due to the electrical resistance of the contact portion between the protrusion and the other member, thereby performing welding. However, materials with porous structures such as sintered alloys absorb air into their internal voids, and this air expands with the resistance heating described above, and when the contact area of the parts becomes semi-molten, it ejects and melts. The base material is scattered in beads. This phenomenon is noticeable when there is a large difference in heat capacity between the two members to be joined or when heating is rapid. In a distribution fuel injection pump, the components are operated in fuel oil, so any dust that adheres to the components can cause problems with the fuel system, so the components should be thoroughly cleaned from time to time when they are assembled.
It is extremely difficult to completely remove this spatter.
又このような溶接は接合部の強度を低下させる等の問題
があった。Further, such welding has the problem of reducing the strength of the joint.
本発明は上記問題を解決することを目的とし、抵抗溶接
中、少く共接合される両部材を真空中に保持し、多孔性
組織の焼結合金材の内部空隙に吸収している空気を放出
させ、抵抗加熱時の空気の急激な膨張をなくしスパッタ
を発生させないようにした焼結合金材の抵抗溶接方法を
提供するものである。The purpose of the present invention is to solve the above-mentioned problems. During resistance welding, both members to be jointly joined are kept in a vacuum, and the air absorbed in the internal voids of the porous sintered alloy material is released. The present invention provides a resistance welding method for sintered alloy materials, which eliminates the rapid expansion of air during resistance heating and prevents the generation of spatter.
以下本発明の一実施例を図面を参照して説明する。第１
図は焼結合金材を成型して成るギヤ１及びフライウエー
トホルダ２の接合前の状態を示し、一方の部材（図示例
ではフライウエートホルダ２）の接合面２ａに適当数の
突起２ｂが形成され、ギヤ１の接合面ｌａ側のセンタボ
ス１ｂをフライウエートホルダ２の中心孔２ａに挿入し
、突起２ｂをギヤ１の接合面１ａに当接させればギヤ１
とフライウエートホルダ２とのセンタリングがなされる
。この状態で第２図に示すように、少く共ギヤ及びフラ
イウエートホルダ２を真空室３内に収容し、抵抗溶接機
４の上下電極５．６間に挾んで加圧する。ここで真空ポ
ンプ３ａを作動して真空室３を減圧し上下電極５．６に
通電する。するとフライウエートホルダ２の突起２ｂと
ギヤ１との接触部の電気抵抗は高いから接触部が加熱さ
れ焼結合金の溶融温度に達し、加圧により両溶融部が圧
接されて両部材が溶接される。この時焼結合金材の内部
空隙に吸収されている空気は減圧されている真空室内で
放出されるから抵抗加熱時の内部空気の急激な膨張をな
くシ、スパッタの発生を防止することができる。An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure shows a gear 1 made of a sintered metal material and a flyweight holder 2 before they are joined, and an appropriate number of protrusions 2b are formed on the joining surface 2a of one member (flyweight holder 2 in the illustrated example). If the center boss 1b on the joint surface la side of the gear 1 is inserted into the center hole 2a of the flyweight holder 2 and the protrusion 2b is brought into contact with the joint surface 1a of the gear 1, the gear 1
and the fly weight holder 2 are centered. In this state, as shown in FIG. 2, the gear and flyweight holder 2 are housed in the vacuum chamber 3, and are placed between the upper and lower electrodes 5, 6 of the resistance welding machine 4 and pressurized. Here, the vacuum pump 3a is operated to reduce the pressure in the vacuum chamber 3 and energize the upper and lower electrodes 5.6. Then, since the electrical resistance of the contact part between the protrusion 2b of the fly weight holder 2 and the gear 1 is high, the contact part is heated and reaches the melting temperature of the sintered alloy, and the two molten parts are brought into contact with each other by pressure, and the two members are welded. Ru. At this time, the air absorbed in the internal voids of the sintered alloy material is released into the vacuum chamber where the pressure is reduced, which eliminates the rapid expansion of the internal air during resistance heating and prevents the generation of spatter. .
尚上記真空室は接合する部材を収容しうるものでよいが
、抵抗溶接機を真空室に収容した型式も選択可能である
。The vacuum chamber may be one that can accommodate the members to be joined, but a type in which a resistance welding machine is housed in the vacuum chamber can also be selected.
以上述べたよ、、′うに本発明は焼結合金で成る２部材
の抵抗溶接方法″□において、少く共接合される両部材
を真空中に保持して脱気し抵抗溶接するものであるから
抵抗加熱時の内部空気の急激な膨張によるスパッタの発
生が防止され、従って部材の組付は時の洗浄工程を簡易
化できると共にスパッタによるトラブルの発生率を減少
し、しかも抵抗溶接部の強度低下を防ぐことができる。As stated above, the present invention is a resistance welding method for two members made of sintered alloy, in which both members to be jointly joined are kept in a vacuum and degassed to perform resistance welding. This prevents the generation of spatter due to the rapid expansion of internal air during heating, which simplifies the cleaning process when assembling parts, reduces the incidence of problems caused by spatter, and reduces the strength of resistance welded parts. It can be prevented.
図は本発明の一実施例を示し、第１図はギヤとフライウ
エートホルダとの接合前の状態を示し、第２図は同部材
を抵抗溶接した状態を示す。
１・・・ギヤ、２・・・フライウエートホルダ、１ａ。
２ａ・・・接合面、２ｂ・・・突起、３・・・真空室、
３ａ・・・真空ポンプ。
出願人 ヂーゼル機器株式会社
代理人 弁理士 渡 部 敏 彦The drawings show an embodiment of the present invention, with FIG. 1 showing the gear and flyweight holder before they are joined together, and FIG. 2 showing the same members being resistance welded. 1... Gear, 2... Fly weight holder, 1a. 2a...Joint surface, 2b...Protrusion, 3...Vacuum chamber,
3a...Vacuum pump. Applicant: Diesel Kiki Co., Ltd. Representative Patent Attorney: Toshihiko Watanabe
Claims (1)
起を形成し、接合される他方の部材の接合面と上記突起
とを接触させて両部材を加圧すると共に通電し、突起と
他方の部材との接触部の電気抵抗によυ接触部が加熱溶
融し溶接される焼結合金材の抵抗溶接方法において、少
く共接合される両部材を真空中に保持して抵抗溶接する
ことを特徴とした焼結合金材の抵抗溶接方法。 ２、上記焼結合金で成る２部材は分配型燃料噴射ポンプ
のギヤとフライウエートホルダである特許請求の範囲第
１項記載の焼結合金材の抵抗溶接方法つ[Claims] 1. An appropriate number of projections are formed on the joint surface of one of two members made of sintered alloy, and the projections are brought into contact with the joint surface of the other member to be joined to process both members. In the resistance welding method for sintered alloy materials, in which the υ contact part is heated and melted and welded by the electrical resistance of the contact part between the protrusion and the other member, both parts to be joined together are placed in a vacuum. A resistance welding method for sintered metal materials characterized by holding and resistance welding. 2. The method of resistance welding sintered alloy materials according to claim 1, wherein the two members made of the sintered alloy are a gear and a flyweight holder of a distribution type fuel injection pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10978381A JPS5813482A (en) | 1981-07-14 | 1981-07-14 | Resistance welding method for sintered alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10978381A JPS5813482A (en) | 1981-07-14 | 1981-07-14 | Resistance welding method for sintered alloy material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5813482A true JPS5813482A (en) | 1983-01-25 |
Family
ID=14519104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10978381A Pending JPS5813482A (en) | 1981-07-14 | 1981-07-14 | Resistance welding method for sintered alloy material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813482A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02169184A (en) * | 1988-12-21 | 1990-06-29 | Hitachi Ltd | Vacuum sealing device for metallic pipe |
| JPH04280080A (en) * | 1991-03-06 | 1992-10-06 | Jgc Corp | Pretreatment of fuel cell material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55141386A (en) * | 1979-04-06 | 1980-11-05 | Kobe Steel Ltd | Production of metal bar form body |
-
1981
- 1981-07-14 JP JP10978381A patent/JPS5813482A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55141386A (en) * | 1979-04-06 | 1980-11-05 | Kobe Steel Ltd | Production of metal bar form body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02169184A (en) * | 1988-12-21 | 1990-06-29 | Hitachi Ltd | Vacuum sealing device for metallic pipe |
| JPH04280080A (en) * | 1991-03-06 | 1992-10-06 | Jgc Corp | Pretreatment of fuel cell material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3636603B2 (en) | Connection plate and connection method of connection plate | |
| JPS5813481A (en) | Positioning and joining method for sintered alloy material | |
| JP2004174599A (en) | Method of welding shaftlike component to plural piled steel sheets | |
| JPS5813482A (en) | Resistance welding method for sintered alloy material | |
| US20060249562A1 (en) | Component Joining | |
| JPS61180671A (en) | Method of mounting coupling member to metallic surface through brazing | |
| JPS5813480A (en) | Joining method for sintered alloy material | |
| JP4015244B2 (en) | Alloy type temperature fuse manufacturing method | |
| US6369346B1 (en) | Method for welding a double layer sheet to a jointing sheet | |
| US1957111A (en) | Bearing | |
| JP3504727B2 (en) | Resistance spot welding method for aluminum material | |
| JPH02303689A (en) | Method for joining contact point material | |
| USRE21495E (en) | Bearing | |
| JP3602582B2 (en) | Manufacturing method of electrode for resistance welding | |
| JPH0970672A (en) | Method for welding different metal plate body | |
| JP2861314B2 (en) | Resistance welding method using amorphous foil | |
| JPH0320311B2 (en) | ||
| JPS58121552A (en) | Manufacture of plate group in lead storage battery | |
| JPS6034465Y2 (en) | Spot welding electrode | |
| JPS6141078A (en) | Metal bellows and preparation thereof | |
| JP3794788B2 (en) | Brazing wire and its brazing method | |
| JPH05245655A (en) | Joining method for metallic member | |
| JPS5832739B2 (en) | Connection method between storage battery cells | |
| JPH08181358A (en) | Thermoelectric transducer, its manufacture, and manufacturing equipment | |
| JPS60240371A (en) | Method of welding turbo-rotor shaft |