JP2016129895A5 - - Google Patents
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- JP2016129895A5 JP2016129895A5 JP2015004546A JP2015004546A JP2016129895A5 JP 2016129895 A5 JP2016129895 A5 JP 2016129895A5 JP 2015004546 A JP2015004546 A JP 2015004546A JP 2015004546 A JP2015004546 A JP 2015004546A JP 2016129895 A5 JP2016129895 A5 JP 2016129895A5
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- electrode
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- resistance welding
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- 238000003466 welding Methods 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- -1 chromium copper Chemical compound 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Description
この組成を有することで、カーボンの母相中に一定量のＳｉＣおよびＢ４Ｃが分散した組織となり、抵抗溶接用電極表面が使用中に高温となった場合でも、電極表面に酸化が進みにくい層を形成する。この酸化が進みにくい層はＳｉＯ２やＢ ２ Ｏ ３ などからなる、金属や酸素と反応しにくい層であり、この層が抵抗溶接用電極表面に形成されることにより、抵抗溶接用電極および空気中の酸素との反応がほとんど起こらなくなる。
By having this composition, it becomes a structure in which a certain amount of SiC and B 4 C are dispersed in the matrix of carbon, and even when the resistance welding electrode surface becomes hot during use, oxidation hardly proceeds to the electrode surface. Form a layer. This layer that is difficult to proceed with oxidation is a layer made of SiO 2 , B 2 O 3, or the like that hardly reacts with metal or oxygen. By forming this layer on the surface of the resistance welding electrode, resistance welding electrode and air Almost no reaction with oxygen inside.
試料１〜試料５および比較試料１１〜１３で同形状の電極１にて、表１に示す条件で連続打点のスポット溶接を行った。そして、形成されたナゲット径を測定し、ナゲット径が３．３ｍｍを下回るものを溶接不良として、電極寿命を求めた。また、電極１の最も細くなった部分が使用前の９０％を下回った段階で、その電極は寿命とした。また、折損が起こった場合、ピックアップ現象が起こった場合も寿命とした。寿命結果を表２にまとめた。
試料１：３質量％ＳｉＣ−２質量％Ｂ４Ｃ−残部カーボンの本発明の抵抗溶接用電極
試料２：３質量％ＳｉＣ−３質量％Ｂ４Ｃ−残部カーボンの本発明の抵抗溶接用電極
試料３：９質量％ＳｉＣ−５質量％Ｂ４Ｃ−残部カーボンの本発明の抵抗溶接用電極
試料４：１１質量％ＳｉＣ−７質量％Ｂ４Ｃ−残部カーボンの本発明の抵抗溶接用電極
試料５：１４質量％ＳｉＣ−３質量％Ｂ４Ｃ−残部カーボンの本発明の抵抗溶接用電極
比較試料２１：カーボン（ほぼ純粋なグラファイト）製の抵抗溶接用電極
比較試料２２：クロム銅の抵抗溶接用電極
比較試料２３：タングステンの抵抗溶接用電極
Sample 1 to sample 5 and comparative samples 11 to 13 were subjected to spot welding with continuous spotting using the electrode 1 having the same shape under the conditions shown in Table 1. And the formed nugget diameter was measured and the electrode life was calculated | required by making a nugget diameter less than 3.3 mm into a poor welding. In addition, when the thinnest part of the electrode 1 fell below 90% before use, the electrode was considered to have a lifetime. In addition, when breakage occurs and when a pickup phenomenon occurs, the service life is also considered. The lifetime results are summarized in Table 2.
Sample 1: Electrode for resistance welding of the present invention of 3 mass% SiC-2 mass% B 4 C—balance carbon Sample 2: Resistance welding electrode of the present invention of 3 mass% SiC-3 mass% B 4 C—balance carbon Sample 3: Electrode for resistance welding of the present invention of 9 mass% SiC-5 mass% B 4 C-balance carbon Sample 4: Electrode for resistance welding of the present invention of 11 mass% SiC-7 mass% B 4 C-balance carbon Sample 5: 14% by mass SiC-3% by mass B 4 C—remaining carbon resistance welding electrode comparative sample 21 of the present invention: carbon (substantially pure graphite) resistance welding electrode comparative sample 22 : resistance of chromium copper Welding electrode comparative sample 23 : Tungsten resistance welding electrode
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015004546A JP6453653B2 (en) | 2015-01-13 | 2015-01-13 | Resistance welding electrode |
| PCT/JP2016/050244 WO2016114197A1 (en) | 2015-01-13 | 2016-01-06 | Resistance welding electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015004546A JP6453653B2 (en) | 2015-01-13 | 2015-01-13 | Resistance welding electrode |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2016129895A JP2016129895A (en) | 2016-07-21 |
| JP2016129895A5 true JP2016129895A5 (en) | 2017-12-14 |
| JP6453653B2 JP6453653B2 (en) | 2019-01-16 |
Family
ID=56405744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015004546A Active JP6453653B2 (en) | 2015-01-13 | 2015-01-13 | Resistance welding electrode |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6453653B2 (en) |
| WO (1) | WO2016114197A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61127864A (en) * | 1984-11-24 | 1986-06-16 | Nippon Tungsten Co Ltd | Covered carbon electrode |
| JP2739136B2 (en) * | 1989-04-19 | 1998-04-08 | イビデン株式会社 | Carbon electrode for resistance welding |
| JP2987426B2 (en) * | 1996-11-19 | 1999-12-06 | 工業技術院長 | Manufacturing method of graphite |
-
2015
- 2015-01-13 JP JP2015004546A patent/JP6453653B2/en active Active
-
2016
- 2016-01-06 WO PCT/JP2016/050244 patent/WO2016114197A1/en active Application Filing
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