JPS6153152B2 - - Google Patents
Info
- Publication number
- JPS6153152B2 JPS6153152B2 JP57075977A JP7597782A JPS6153152B2 JP S6153152 B2 JPS6153152 B2 JP S6153152B2 JP 57075977 A JP57075977 A JP 57075977A JP 7597782 A JP7597782 A JP 7597782A JP S6153152 B2 JPS6153152 B2 JP S6153152B2
- Authority
- JP
- Japan
- Prior art keywords
- tungsten
- nickel
- guide pin
- coating
- alloy
- 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.)
- Expired
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 229910045601 alloy Inorganic materials 0.000 claims description 16
- 239000000956 alloy Substances 0.000 claims description 16
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 15
- 229910052721 tungsten Inorganic materials 0.000 claims description 15
- 239000010937 tungsten Substances 0.000 claims description 15
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 102220005308 rs33960931 Human genes 0.000 description 3
- 238000007751 thermal spraying Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- -1 Carbon forms carbides Chemical class 0.000 description 1
- 101150105594 SCM3 gene Proteins 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 229910021386 carbon form Inorganic materials 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
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
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
- Coating By Spraying Or Casting (AREA)
Description
本発明は、二組以上の鋼板などからなる被加工
物をスポツト溶接によつて互に接合するに際し、
これら被加工物を相互に位置決めする案内ピンに
関するものである。
位置決め用案内ピンは、基板の所定位置に複数
個固定されており、予め複数個の小孔が設けられ
た被加工物を孔位置を合わせて互に重ね合わせて
該ピンに装着するか、あるいは基板を移動させて
ピンを小孔に嵌挿し、被加工物が少くとも重ね合
わされた面に沿つた方向には動かないようにして
被加工物相互の位置決めがなされ、この状態を保
持してスポツト溶接がなされる。
従来、このような目的に用いられる案内ピンは
機械構造用炭素鋼（S50Cなど）を焼入れ焼戻し
を行なつて調質したもの、あるいは高強度のクロ
ムモリブデン鋼（SCM3など）からなるものなど
が用いられているが、
(イ) 頻繁に行なわれる被加工物の着脱によつて、
案内ピンの表面にはピン軸方向の擦過傷を生ず
る、
(ロ) 被加工物が保持される案内ピンの頚部に、く
びれ摩耗を生ずる、
(ハ) 該案内ピン頚部にスパークによる溶融、表面
荒れを生ずる、
(ニ) 該案内ピンには、着脱時に曲げ応力も作用す
るから、摩耗と疲労とが相互に作用して、ピン
折損を招くことがある、
などの問題がある。
これらの問題は、被加工物の着脱の円滑性を阻
害したり、被加工物相互の位置ずれを生ぜしめた
り、あるいはまた頻繁にピンを交換しなければな
らないなど、作業性の面ばかりでなく品質管理の
面からも不都合をきたすことになる。
本発明者らは、案内ピンを高硬度、非導電性物
質で被覆することによつて、上述した問題は解決
し得るとの考えのもとに、金属酸化物からなるセ
ラミツク溶射被膜を形成せしめた案内ピンについ
て種々実験を試みた。
その結果、案内ピン表面が電気絶縁層で覆われ
たので、スパークの発生は防止できたものの、溶
射被膜に亀裂や欠けを生ずる場合があつて、必ず
しも満足のゆく成果は得られなかつた。
これは、被加工物に設けられている小孔が、ブ
レスによる打抜き孔であるから、孔の周面の表面
粗さが大きく、しかも微小な鋭い反（かえ）りも
あり、さらにまた被加工物着脱時には衝撃的な応
力や抉（こじ）りなども加わる結果、靭性に乏し
いセラミツク溶射被膜に局部的な応力が作用し
て、上述した如き亀裂や欠けを生じたものと考え
られる。
本発明者らは、さらに種々の観点から実験を進
めた結果、下地の案内ピンと溶射被膜との界面に
おいて拡散結合層を形成して強固な耐摩耗性被膜
が得られるニツケル系自溶性合金に着目し、さら
に硬度を高めるべく所定量のタングステンを配し
たものを用いて溶射被膜を形成せしめたところ、
耐摩耗性がいちじるしく向上したほか、スパーク
による損傷も大巾に低減することを見出し、本発
明をなすに至つたものである。
自溶性合金は、溶射後熱処理によつて被膜を溶
融させる工程を経るが、この工程で被膜と下地金
属との間に上述した拡散結合層が形成されて、被
膜は下地と一体に密着し、同時に溶射被膜表面は
梨地状粗面から滑らかな表面となるので、研磨な
どの後加工が不要となる利点もある。
本発明に用いられるタングステン入りニツケル
系自溶性合金は、つぎの成分組成を有する。
ニツケル 50〜85％
クロム ５〜20％
ほう素 １〜 ５％
けい素 １〜 ５％
タングステン ２〜30％
ニツケルは、合金の主成分をなすもので、耐酸
化性、靭性の向上に寄与するが、少な過ぎると勒
性を損ない、また多過ぎると硬さが減少するから
50〜85％とした。
クロムは、ほう化物あるいは炭化物を形成し
て、硬さの向上、耐酸化性の向上に寄与するが、
少な過ぎると硬さの不足、多過ぎると靭性を低下
せしめ、また熱処理性をも損なうから５〜20％と
した。
ほう素およびけい素は、フラツクス作用をな
し、熱処理時の酸化防止に寄与するとともに、合
金の融点を下げて熱処理性の向上に寄与する。と
もに１〜５％とすることが好ましい。ほう素はク
ロムとともにほう化物を作つて、上述した作用効
果も発揮する。
タングステンは、合金の組織を微細化し、靭性
の向上に寄与するとともに、硬さ、耐熱性の向上
にも寄与する。
さらに、このタングステンの特異な効果は、ア
ークやスパークによる合金の溶損性を低減せしめ
る点である。種々実験の結果、添加されるタング
ステンは２〜30％、就中４〜15％とすることがも
つとも効果的であることを確認した。
タングステン添加量が少な過ぎると、とくに上
記溶損性の低減効果があらわれず、また30％を超
えてさらに多量に添加してもその効果の向上は緩
慢となるので添加メリツトが損なわれるばかりで
なく熱処理作業性をも低下させ、被膜の強度低下
を招来するのでよくない。
本発明においては、上述した成分に加えて炭素
１％以下、銅５％以下、モリブテン５％以下を配
することができる。
炭素は、成分中の金属、とくにクロムと炭化物
を形成して合金の硬度の向上に寄与するが、添加
量が多過ぎると靭性を損なう。
銅およびモリブデンは、合金の靭性の向上に寄
与するとともに、溶射被膜を比較的厚く形成せし
める場合に有効な元素である。
一般に、耐摩耗性、耐蝕性などを賦与すべく母
材表面に施される溶射被膜の厚さは、10ミクロン
オーダーないし１〜３×102ミクロン程度とする
のが普通であるが、場によつては数100ミクロン
ないし1000ミクロン程度にまで厚く施すことがあ
る。
被膜厚さが厚くなるにしたがつて、下地母材と
被膜との間の熱膨張の差の影響が顕著となり、被
膜に応力割れなどを生ずることがある。
銅、モリブデンは、ニツケル系自溶性合金の熱
膨張を調整し、このような不都合を生ずるのを大
巾に緩和する働きがある。銅、モリブデンの配合
量が多くなると熱処理作業性を低下させるから、
多くてもそれぞれ５％以下とすべきである。
案内ピン表面へのタングステン入りニツケル系
自溶性合金の被膜の形成は、火焔溶射あるいはプ
ラズマ溶射によつて施すことができる。
前者の方法による場合は、本発明者らは以下の
条件を採用することにより好結果を得ている。
(1) 溶射ガン 酸素−アセチレン溶射ガン
(2) 酸素流量 2.7m3／時
(3) 酸素圧力 2.1Kg/cm2
(4) アセチレン流量 1.7m3／時
(5) アセチレン圧力 1.1Kg/cm2
(6) 溶射距離 15 cm
(7) 合金粉末供給量50 ｇ／分
後者の方法による場合は、以下の条件を採用し
好結果を得ている。
(1) 溶射ガン プラズマ溶射ガン
(2) アークガスアルゴン、50／分、3.5Kg/cm2
(3) 溶射距離 ８cm
(4) 合金粉末供給量50ｇ／分
案内ピンの表面は、常法にしたがつて脱脂処理
を施したのち、グリツトブラストなどにより粗面
化し、直ちに上述した溶射を行なつた。
溶射被膜の熱処理は、酸素−アセチレン還元焔
による直接加熱でもよく、またアンモニア分解ガ
ス雰囲気などの還元炉を用いて行なうことができ
る。溶着温度は1100±50℃、加熱保持時間は５〜
10分として好結果を得た。
第１図は、本発明の案内ピンの一部縦断側面図
で、ピン径はおおむね６〜20mm、溶射部分長さは
おおむね10〜30mmである。
１は案内ピン、２はその母体、３は頚部そして
４はタングステン入りニツケル系自溶性合金被膜
である。
第２図は、基板５に固定された案内ピンによつ
て位置決めされた鋼板などの被加工物６，７を、
溶接機を用いてスポツト溶接する態様を示す説明
図で、８，８溶接機のチツプを示す。
下表は、第２図に示した態様で案内ピンの摩
耗、スパークによる溶損について試験した結果を
示したものである。
The present invention provides the following advantages when joining workpieces made of two or more sets of steel plates to each other by spot welding.
The present invention relates to guide pins for mutually positioning these workpieces. A plurality of positioning guide pins are fixed at predetermined positions on the substrate, and workpieces having a plurality of small holes in advance are mounted on the pins by aligning the hole positions and overlapping each other, or The substrate is moved and the pin is inserted into the small hole, and the workpieces are positioned with respect to each other so that the workpieces do not move at least in the direction along the overlapping surfaces, and this state is maintained until the spot is placed. Welding is done. Conventionally, guide pins used for this purpose have been made of mechanical structural carbon steel (S50C, etc.) that has been quenched and tempered, or high-strength chromium-molybdenum steel (SCM3, etc.). (a) Due to the frequent attachment and detachment of the workpiece,
Scratches occur on the surface of the guide pin in the axial direction of the pin, (b) constriction wear occurs on the neck of the guide pin where the workpiece is held, (c) melting due to sparks and surface roughness occur on the neck of the guide pin. (d) Since bending stress also acts on the guide pin when it is attached and detached, there are problems such as wear and fatigue interacting with each other, which may lead to pin breakage. These problems not only affect workability, but also impede the smooth installation and removal of workpieces, cause misalignment of workpieces, and require frequent pin replacement. This will also cause problems in terms of quality control. The present inventors formed a ceramic spray coating made of metal oxide based on the idea that the above-mentioned problems could be solved by coating the guide pin with a highly hard, non-conductive material. Various experiments were conducted on the guide pins. As a result, the surface of the guide pin was covered with an electrically insulating layer, which prevented the generation of sparks, but cracks and chips sometimes occurred in the thermally sprayed coating, so that the results were not necessarily satisfactory. This is because the small hole provided in the workpiece is a punched hole using a press, so the surface roughness of the circumferential surface of the hole is large, and there are also minute sharp burrs. It is thought that as a result of the impact stress and gouging applied during attachment and detachment of objects, localized stress acts on the ceramic sprayed coating, which lacks toughness, resulting in the cracks and chips described above. As a result of further experiments from various viewpoints, the present inventors focused on a nickel-based self-fluxing alloy that forms a diffusion bonding layer at the interface between the underlying guide pin and the thermally sprayed coating, resulting in a strong wear-resistant coating. However, in order to further increase the hardness, a thermal spray coating was formed using a material containing a predetermined amount of tungsten.
It was discovered that not only the wear resistance was significantly improved, but also the damage caused by sparks was greatly reduced, which led to the creation of the present invention. Self-fusing alloys go through a process of melting the coating through heat treatment after thermal spraying, but in this process, the above-mentioned diffusion bonding layer is formed between the coating and the base metal, so that the coating adheres to the base as one body. At the same time, the surface of the sprayed coating changes from a matte rough surface to a smooth surface, which has the advantage of eliminating the need for post-processing such as polishing. The tungsten-containing self-fluxing nickel alloy used in the present invention has the following composition. Nickel 50-85% Chromium 5-20% Boron 1-5% Silicon 1-5% Tungsten 2-30% Nickel is the main component of the alloy and contributes to improving oxidation resistance and toughness. If it is too little, it will impair the chewiness, and if it is too much, it will reduce the hardness.
It was set at 50-85%. Chromium forms borides or carbides and contributes to improving hardness and oxidation resistance, but
If it is too small, the hardness will be insufficient, and if it is too large, the toughness will be reduced and the heat treatability will also be impaired, so it is set at 5 to 20%. Boron and silicon act as a flux and contribute to preventing oxidation during heat treatment, as well as lowering the melting point of the alloy and contributing to improving heat treatability. Both are preferably 1 to 5%. Boron forms borides with chromium, and also exhibits the above-mentioned effects. Tungsten refines the structure of the alloy and contributes to improving toughness, as well as hardness and heat resistance. Furthermore, the unique effect of tungsten is that it reduces the tendency of the alloy to be eroded by arcs and sparks. As a result of various experiments, it has been confirmed that it is most effective to add tungsten in an amount of 2 to 30%, particularly 4 to 15%. If the amount of tungsten added is too small, the above-mentioned effect of reducing the corrosion resistance will not be achieved, and even if the amount is added in excess of 30%, the improvement in the effect will be slow, not only will the benefits of addition be lost. This is not good because it also reduces heat treatment workability and causes a decrease in the strength of the coating. In the present invention, in addition to the above-mentioned components, 1% or less of carbon, 5% or less of copper, and 5% or less of molybdenum can be added. Carbon forms carbides with the metals in the components, especially chromium, and contributes to improving the hardness of the alloy, but if it is added in too much, it impairs the toughness. Copper and molybdenum contribute to improving the toughness of the alloy and are effective elements when forming a relatively thick thermal spray coating. Generally, the thickness of the thermal spray coating applied to the surface of the base material to impart wear resistance, corrosion resistance, etc. is usually on the order of 10 microns or 1 to 3 x 102 microns, but depending on the field. In some cases, it is applied as thick as several 100 microns to 1000 microns. As the thickness of the coating increases, the effect of the difference in thermal expansion between the underlying base material and the coating becomes more pronounced, and stress cracks may occur in the coating. Copper and molybdenum have the function of adjusting the thermal expansion of the nickel-based self-fluxing alloy and largely alleviating such inconveniences. If the content of copper and molybdenum increases, heat treatment workability will decrease.
At most, each should be 5% or less. The coating of the tungsten-containing self-fluxing nickel alloy can be formed on the surface of the guide pin by flame spraying or plasma spraying. In the case of the former method, the present inventors have obtained good results by adopting the following conditions. (1) Thermal spray gun Oxygen-acetylene spray gun (2) Oxygen flow rate 2.7m 3 /hour (3) Oxygen pressure 2.1Kg/cm 2 (4) Acetylene flow rate 1.7m 3 /hour (5) Acetylene pressure 1.1Kg/cm 2 (6) Thermal spray distance 15 cm (7) Alloy powder supply rate 50 g/min When using the latter method, the following conditions were adopted and good results were obtained. (1) Thermal spray gun Plasma spray gun (2) Arc gas argon, 50/min, 3.5Kg/cm 2 (3) Thermal spraying distance 8cm (4) Alloy powder supply rate 50g/min The surface of the guide pin was prepared using the conventional method. After degreasing, the surface was roughened by grit blasting, and the above-mentioned thermal spraying was immediately applied. The heat treatment of the sprayed coating may be performed by direct heating using an oxygen-acetylene reducing flame, or by using a reducing furnace such as an ammonia decomposition gas atmosphere. Welding temperature is 1100±50℃, heating holding time is 5~
Good results were obtained in 10 minutes. FIG. 1 is a partially longitudinal side view of the guide pin of the present invention, and the pin diameter is approximately 6 to 20 mm, and the length of the sprayed portion is approximately 10 to 30 mm. 1 is a guide pin, 2 is its base, 3 is a neck, and 4 is a tungsten-containing nickel-based self-fusing alloy coating. FIG. 2 shows workpieces 6 and 7 such as steel plates positioned by guide pins fixed to a substrate 5.
FIG. 2 is an explanatory diagram showing a mode of spot welding using a welding machine, and shows a chip of an 8,8 welding machine. The table below shows the results of tests on guide pin wear and melting damage caused by sparks in the manner shown in FIG. 2.
【表】
試験条件：
(1) 案内ピン
(イ) 従来品 機械構造用炭素鋼S50C、焼入れ
焼戻し。硬さロツクウエルＣスケール35〜
45。
(ロ) 本発明品 機械構造用炭素鋼S50Cの表面
に、Cr18％、B3.5％、Si4.0％、W5％、C0.9
％、残部Niからなる厚さ0.2mmの被膜を形
成。硬さロツクウエルＣスケール65。
(2) 被加工物
厚さ0.6〜2.6mmの冷間圧延鋼板を二枚重ね合
せたもの。
(3) 被加工物の着脱
106回、その都度スポツト溶接数ケ所。
(4) 摩耗および溶損の観察と測定
同一基板に固定された特定位置の案内ピン
Ａ，Ｂについて、従来品を用いた場合と、本発
明品を用いた場合とについて、それぞれ摩耗、
溶損の観察と測定を行ない、着脱の円滑度合に
ついても試験した。
以上説明したように、本発明の位置決め用案内
ピンは、耐摩耗性がいちじるしく向上したほか、
スパークによる損傷も大巾に低減させることがで
きた。[Table] Test conditions: (1) Guide pin (a) Conventional product S50C carbon steel for machine structures, quenched and tempered. Hardness Rockwell C scale 35~
45. (b) Inventive product: Cr18%, B3.5%, Si4.0%, W5%, C0.9 on the surface of machine structural carbon steel S50C.
%, with the remainder being Ni to form a 0.2mm thick film. Hardness Rockwell C scale 65. (2) Workpiece Two cold-rolled steel plates with a thickness of 0.6 to 2.6 mm are stacked together. (3) Attaching and detaching the workpiece 10 to 6 times, with several spot welds each time. (4) Observation and measurement of wear and erosion Regarding guide pins A and B fixed on the same board at specific positions, wear and tear were observed when using the conventional product and when using the product of the present invention, respectively.
Erosion damage was observed and measured, and smoothness of attachment and detachment was also tested. As explained above, the positioning guide pin of the present invention has significantly improved wear resistance, and
Damage caused by sparks was also significantly reduced.
第１図は、本発明の位置決め用案内ピンの一部
縦断側面図で、第２図は、基板に固定された案内
ピンによつて位置決めされた鋼板などの被加工物
をスポツト溶接する態様を示した説明図である。
１……位置決め用案内ピン、４……タングステ
ン入りニツケル系自溶性合金被膜。
Fig. 1 is a partially longitudinal side view of the positioning guide pin of the present invention, and Fig. 2 shows a mode of spot welding a workpiece such as a steel plate positioned by the guide pin fixed to a substrate. FIG. 1... Positioning guide pin, 4... Tungsten-containing nickel-based self-fusing alloy coating.
Claims (1)
ル系自溶性合金の溶射被膜が施されてなる耐摩耗
性にすぐれ、スパークによる表面損傷が改善され
たスポツト溶接に供せられる被加工物の位置決め
用案内ピン。 ２ タングステンを含むニツケル系自溶性合金
が、重量比でニツケル50〜85％、クロム５〜20
％、ホウ素１〜５％、けい素１〜５％そしてタン
グステンが２〜30％であることを特徴とした特許
請求の範囲第１項記載の位置決め用案内ピン。 ３ タングステンを含むニツケル系自溶性合金
が、重量比でニツケル50〜85％、クロム５〜20
％、ホウ素１〜５％、けい素１〜５％、炭素１％
以下、銅５％以下、モリブデン５％以下そしてタ
ングステンが２〜30％であることを特徴とした特
許請求の範囲第１項記載の位置決め用案内ピン。[Scope of Claims] 1. A thermally sprayed coating of a nickel-based self-fluxing alloy containing 2 to 30% tungsten by weight, which has excellent wear resistance and is used for spot welding with improved surface damage caused by sparks. Guide pin for positioning the workpiece. 2 Nickel-based self-fusing alloy containing tungsten has a weight ratio of 50 to 85% nickel and 5 to 20% chromium.
%, boron 1-5%, silicon 1-5% and tungsten 2-30%. 3 Nickel-based self-fusing alloy containing tungsten has a weight ratio of 50 to 85% nickel and 5 to 20% chromium.
%, boron 1-5%, silicon 1-5%, carbon 1%
The positioning guide pin according to claim 1, wherein the following content is 5% or less of copper, 5% or less of molybdenum, and 2 to 30% of tungsten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57075977A JPS58196182A (en) | 1982-05-08 | 1982-05-08 | Guide pin for positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57075977A JPS58196182A (en) | 1982-05-08 | 1982-05-08 | Guide pin for positioning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58196182A JPS58196182A (en) | 1983-11-15 |
| JPS6153152B2 true JPS6153152B2 (en) | 1986-11-17 |
Family
ID=13591811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57075977A Granted JPS58196182A (en) | 1982-05-08 | 1982-05-08 | Guide pin for positioning |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58196182A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5631706B2 (en) * | 2010-11-18 | 2014-11-26 | 住友重機械工業株式会社 | Thermal spray powder and method of installing an alloy spray coating on a member |
-
1982
- 1982-05-08 JP JP57075977A patent/JPS58196182A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58196182A (en) | 1983-11-15 |
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