JPS62296972A - Method for preventing sticking of spatter and spatter sticking preventive type welding torch nozzle - Google Patents
Method for preventing sticking of spatter and spatter sticking preventive type welding torch nozzleInfo
- Publication number
- JPS62296972A JPS62296972A JP13869986A JP13869986A JPS62296972A JP S62296972 A JPS62296972 A JP S62296972A JP 13869986 A JP13869986 A JP 13869986A JP 13869986 A JP13869986 A JP 13869986A JP S62296972 A JPS62296972 A JP S62296972A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- spatter
- fluorine
- based polymer
- polymer compound
- 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000003449 preventive effect Effects 0.000 title 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000011737 fluorine Substances 0.000 claims abstract description 35
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 35
- 229920000642 polymer Polymers 0.000 claims abstract description 34
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 5
- 239000002033 PVDF binder Substances 0.000 claims abstract description 3
- 229920001577 copolymer Polymers 0.000 claims abstract description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 3
- 150000001875 compounds Chemical class 0.000 claims description 29
- 230000002265 prevention Effects 0.000 claims description 9
- 238000004021 metal welding Methods 0.000 claims description 3
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 claims description 2
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 claims 1
- 238000007747 plating Methods 0.000 abstract description 24
- 239000000463 material Substances 0.000 abstract description 21
- 239000004094 surface-active agent Substances 0.000 abstract description 2
- 230000008021 deposition Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000011802 pulverized particle Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 26
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 16
- 229910052804 chromium Inorganic materials 0.000 description 14
- 239000011651 chromium Substances 0.000 description 14
- 239000002131 composite material Substances 0.000 description 11
- 239000010419 fine particle Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- 238000005254 chromizing Methods 0.000 description 5
- 238000004381 surface treatment Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- QFLWZFQWSBQYPS-AWRAUJHKSA-N (3S)-3-[[(2S)-2-[[(2S)-2-[5-[(3aS,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]-3-methylbutanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-[1-bis(4-chlorophenoxy)phosphorylbutylamino]-4-oxobutanoic acid Chemical compound CCCC(NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)[C@@H](NC(=O)CCCCC1SC[C@@H]2NC(=O)N[C@H]12)C(C)C)P(=O)(Oc1ccc(Cl)cc1)Oc1ccc(Cl)cc1 QFLWZFQWSBQYPS-AWRAUJHKSA-N 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
本発明は、ガスシール式溶接装置のトーチノズルの改良
に係わり、更に詳しくは表面にスパック付着防止処理を
施したスパッタ付着防止方法並びにその溶接用トーチノ
ズルに関する。Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to the improvement of a torch nozzle for a gas-sealed welding device, and more specifically to the improvement of a torch nozzle for a gas-sealed welding device. This invention relates to a method for preventing adhesion and a welding torch nozzle.
従来のガスシール式溶接用トーチノズルは、銅製ノズル
基材の表面にアルミニウム又はクロムを拡散浸遇させて
被覆層を形成した所謂カロライジング処理及びクロマイ
ジング処理を施したもの、あるいは表面に硬質クロムメ
ッキをしたものが提供されているが、ノズルの先端部に
スパッタが付着して目詰まりが起こり、シールドガスの
流出を阻害して溶着金属の中に空気が入り酸化及び窒化
現象による欠陥溶接になったり、また本来は電気絶縁さ
れているトーチノズルと溶接環がスパッタの付着で短絡
されスパークが発生して、該トーチノズルの表面が１旧
託し、更にスパックの付着を促進させるので、定期的に
溶接作業を停止してスパッタの除去作業が必要であり、
特に多数の溶接箇所を同時に制御して溶接する自動溶接
機に於いては、前述したトーチノズルの先端部へのスパ
ッタの付着は解決すべき最大課題であり、作業能率を高
める上で障害となっていた。その為、先端部を耐熱性、
滑動性に優れたセラミックスで形成した溶接用トーチノ
ズルが考慮されるが、スパッタの付着は比較的防止でき
るものの高温で焼成する等製造工程が複雑で高価になり
、安価でしがもスパッタの付着が極度に少ないスパック
付着防止方法並びにその溶接用トーチノズルの開発が望
まれていた。Conventional gas-sealed welding torch nozzles are those that have been subjected to so-called colorizing and chromizing treatments in which aluminum or chromium is diffused and impregnated onto the surface of the copper nozzle base material to form a coating layer, or the surface is hard chrome plated. However, spatter adheres to the tip of the nozzle and causes clogging, which obstructs the outflow of shielding gas and causes air to enter the deposited metal, resulting in defective welding due to oxidation and nitridation phenomena. In addition, the torch nozzle and welding ring, which are originally electrically insulated, may be short-circuited due to adhesion of spatter and sparks may occur, causing the surface of the torch nozzle to deteriorate and further promoting the adhesion of sparks, so welding must be carried out regularly. It is necessary to stop the process and remove spatter.
Particularly in automatic welding machines that control and weld a large number of welding points at the same time, the aforementioned spatter adhesion to the tip of the torch nozzle is the biggest issue that must be solved, and is an obstacle to improving work efficiency. Ta. Therefore, the tip is heat resistant,
A welding torch nozzle made of ceramic with excellent sliding properties has been considered, but although it can relatively prevent spatter adhesion, the manufacturing process is complicated and expensive due to firing at high temperatures, and although it is inexpensive, it does not cause spatter adhesion. It has been desired to develop a method for preventing extremely small spatter adhesion and a welding torch nozzle for the same.
本発明が前述の状況に爲み、解決しようとするところは
、従来の金泥製ノズル基材に表面処理を施し、ノズル表
面の滑落性を向上させスパッタの付着を極度に防止し且
つ付着しても自重により容易に剥離し得る安価で耐久性
の高いスパック付着防止方法並びにその溶接用トーチノ
ズルを提供する点にある。The present invention aims to solve the above-mentioned situation by surface-treating the conventional gold mud nozzle base material to improve the sliding properties of the nozzle surface and to extremely prevent spatter from adhering. Another object of the present invention is to provide an inexpensive and highly durable method for preventing spatter adhesion that can be easily peeled off under its own weight, and a welding torch nozzle for the same.
本発明は、前述の問題解決の為に、ガスシール式金属製
溶接用ノズルの表面にフッ素系高分子化合物を含有させ
ることで、該溶接用ノズルへのスパッタの付着を防止す
る父バッタ付着防止方法であり、また溶接用ノズルの表
面にフッ素系高分子化合物の表面硬化層を形成するが又
は該フッ素系高分子化合物を金属中に含有又は共存する
表面便化層を形成してスパッタ付着防止型溶接用トーチ
ノズルでもある。In order to solve the above-mentioned problem, the present invention contains a fluorine-based polymer compound on the surface of a gas-sealed metal welding nozzle to prevent spatter from adhering to the welding nozzle. This method forms a surface hardening layer of a fluorine-based polymer compound on the surface of a welding nozzle, or forms a surface-facilitating layer containing or coexisting with the fluorine-based polymer compound in the metal to prevent spatter adhesion. It is also a torch nozzle for type welding.
以上の如き内容からなる本発明のスパッタ付着防止型溶
接用トーチノズルは、金属製トーチノズルの表面にフッ
素系高分子化合物を位置させ、該フッ素系高分子化合物
の素材自体のもつ低摩擦性によって、アーク発生部から
飛散する溶融金属、即ちスパッタのノズル先端部への付
着を防止し且つ付着しても滑落性がよいので溶融金属の
自重により容易に剥離するものであり、その為熔融金泥
のノズル先端部での滞留時間が短いので咳熔励金属から
ノズル先端部への熱の伝達が少な（、更に熱伝導性の良
い金属製ノズルを用いているので、内部を流れるシール
ドガスによりまた場合によっては水冷を行っており常に
該トーチノズルが冷却された状態にあり、熱の築中がな
く該１・−チノズルの温度上昇も少なく、金属と比較し
て低温度で溶融するフッ素系高分子化合物を有する表面
硬化層の熱ｉＭ （Ｉｉも少ないものである。The spatter adhesion prevention type welding torch nozzle of the present invention, which has the above-mentioned contents, has a fluorine-based polymer compound placed on the surface of the metal torch nozzle, and uses the low friction property of the fluorine-based polymer compound material itself to prevent arcing. It prevents molten metal, i.e., spatter, from adhering to the tip of the nozzle that is scattered from the generation area, and even if it does, it has good sliding properties and is easily peeled off due to the weight of the molten metal. Because the residence time in the melting section is short, there is little heat transfer from the melting metal to the nozzle tip. The torch nozzle is always in a cooled state due to water cooling, there is no heat build-up, the temperature rise of the torch nozzle is small, and it contains a fluorine-based polymer compound that melts at a lower temperature than metals. The heat iM (Ii) of the surface hardening layer is also small.
次に添付図面に示した実施例に基づき更に本発明の詳細
な説明する。Next, the present invention will be further described in detail based on embodiments shown in the accompanying drawings.
第１図は本発明に係わるスパッタ付着防止型溶接用トー
チノズルの使用状態を図式的に示した省略断面図であり
、略円筒形の金属製トーチノズル１の中心部に、ノズル
先端部２方向へ順次送り出される溶接環３を配し、該溶
接棒３の先端と溶接物４，４の接合ｇｒｓｓ間にアーク
６を発生させて、溶接棒３の先端部を熔融し、前記接合
部５の溶融部７に順次供給するものであり、更に前記ト
ーチノズル１の内部からノズル先端部２方向へ炭酸ガス
、アルゴン及びヘリウム等のシールドガス８を噴出して
、空気から前記アーク６及び熔融部７を完全に遮断して
、該溶融部７の酸化及び窒化による欠陥溶接を防止する
とともに、前記シールドガス８雰囲気中で安定にアーク
６を発生させるものであり、この場合アーク６の衝撃に
より前記溶融部７から熔融金属が飛散し、即ちスパッタ
９が発生して、前記ノズル先端部２の内外面に該スパッ
タ９が衝突するものである。FIG. 1 is an abbreviated sectional view schematically showing the state of use of the spatter adhesion prevention type welding torch nozzle according to the present invention. The welding ring 3 to be sent out is disposed, and an arc 6 is generated between the tip of the welding rod 3 and the welding parts 4, 4 to melt the tip of the welding rod 3 and melt the molten part of the joint 5. Furthermore, a shielding gas 8 such as carbon dioxide, argon, helium, etc. is ejected from the inside of the torch nozzle 1 toward the nozzle tip 2 to completely remove the arc 6 and the molten part 7 from the air. This prevents defective welding due to oxidation and nitridation of the molten part 7, and also stably generates the arc 6 in the atmosphere of the shielding gas 8. In this case, the impact of the arc 6 causes the welding to occur from the molten part 7. The molten metal scatters, that is, spatter 9 is generated, and the spatter 9 collides with the inner and outer surfaces of the nozzle tip 2.
第２図（ａｌ〜（ｄｌは、金属製ノズル基材１０の表面
処理の各種の態様を示したものである。FIG. 2 (al to (dl) show various aspects of surface treatment of the metal nozzle base material 10.
第１実施例
第２図（ａｌに示す如く、ノズル基材］０の表面にフッ
素系高分子化合物を、好ましくはポリテトラフルオロエ
チレンを数十μｍの厚さでコーティングして熱処理を行
い、フッ素系高分子化合物Ｆｉｌｌを形成したものであ
る。1st Example As shown in Figure 2 (al), the surface of the nozzle base material 0 is coated with a fluorine-based polymer compound, preferably polytetrafluoroethylene, to a thickness of several tens of μm, and then heat treated to remove the fluorine A system polymer compound Fill is formed.
第２実施例
第２図（ｂｌに示す如く、ノズル基材１０の表面を粗面
化した後、無電解ニッケルめっきを行ってニッケル層１
２を形成し、更にその上面に前記同様にフッ素系高分子
化合物をコーティング、熱処理を行いフッ素糸高分子化
合物屓１１を形成したものである。Second Embodiment As shown in FIG. 2 (bl), after roughening the surface of the nozzle base material 10, electroless nickel plating is performed to form a nickel layer 1.
2, and then coated with a fluorine-based polymer compound on the upper surface in the same manner as described above and heat-treated to form a fluorine-based polymer compound layer 11.
第３実施例
第２図（Ｃ１に示す如く、ノズル基材１０の表面に硬質
クロムめっきを行って厚さ２０〜３０μｍのクロム５１
３を形成し、該クロム層１３に生じたクランク内に熱処
理を行いながらポリテトラフルオロエチレン等のフッ素
系高分子化合物１１゛を充填し、その後急冷却して前記
クロム層１３に該フッ素系高分子化合物１１′を埋設し
たものである。Third Embodiment As shown in FIG. 2 (C1), the surface of the nozzle base material 10 is plated with hard chromium to have a thickness of 20 to 30 μm.
A fluorine-based polymer compound 11' such as polytetrafluoroethylene is filled in the crank formed in the chromium layer 13 while being heat-treated, and then rapidly cooled to form a fluorine-based polymer compound 11'' in the chromium layer 13. The molecular compound 11' is embedded therein.
第４実施例
第２図（ｄｌに示す如く、ニッケルめっき液中にポリテ
トラフルオロエチレン、ポリクロロトリフルオロエチレ
ン、ポリフッ化ビニリデン、テトラフルオロエチレン−
ヘキサフルオロプロピレン共重合体から選んだ１種又は
２種以上のもののフッ素系高分子化合物微粒子１４を界
面活性剤で分散させためっき液を用いて、ノズル基材１
０の表面にめっきを行って共析させ、前記フッ素系高分
子化合物微粒子１４をニッケル１５中に点在分散させて
、厚さ数μｍ〜３０μｍの複合めっぎ層１６を形成した
ものであり、前記フッ素系高分子化合物微粒子１４の含
有量を１０〜４０体積％となし、更に好ましくは１５〜
２５体積％になるように設定したものである。4th Example As shown in Figure 2 (dl), polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinylidene fluoride, tetrafluoroethylene-
The nozzle base material 1 is coated using a plating solution in which fluorine-based polymer compound fine particles 14 of one or more selected from hexafluoropropylene copolymers are dispersed with a surfactant.
The fluorine-based polymer compound fine particles 14 are dotted and dispersed in the nickel 15 to form a composite plating layer 16 with a thickness of several μm to 30 μm. , the content of the fluorine-based polymer compound fine particles 14 is 10 to 40% by volume, more preferably 15 to 40% by volume.
The content was set to 25% by volume.
第５実施例
第２図（ｅｌに示す如く、ノズル基材１０の表面に硬質
クロムめっきをしてクロム層１７を形成し、その上に前
記第４実施例で示したフッ素系高分子化合物微粒子１４
とニッケル１５の複合めっき層１６を形成したものであ
る。Fifth Embodiment As shown in FIG. 2 (el), the surface of the nozzle base material 10 is plated with hard chromium to form a chromium layer 17, and the fluorine-based polymer compound fine particles shown in the fourth embodiment are deposited on top of the chromium layer 17. 14
A composite plating layer 16 of nickel and nickel 15 is formed.
以上に述べた実施例の中で、特に第５実施例として示し
た金属製ノズル基材１０の表面に硬質クロムめっきを行
い、その上にフッ素系高分子化合物微粒子１４とニッケ
ル１５の複合メッキ層１６を形成する表面処理を施した
トーチノズル１と、従来の金属製ノズル基材１０の表面
にクロマイジング処理、クロマイジング処理及び硬質ク
ロムメッキ処理を施したトーチノズル１とを比較実験し
た結果を以下に述べる。第３〜７図は、同一の使用条件
で、各トーチノズル１．・・・のノズル先端部２へのス
パッタ９の付着状態を比較した写真であり、第３〜５図
の（ａｌはトーチノズル１の側面写真、（ｂｌはノズル
先端部２の拡大写真であり、第６．７図はトーチノズル
１の側面写真である。Among the embodiments described above, hard chromium plating is applied to the surface of the metal nozzle base material 10 shown as the fifth embodiment, and a composite plating layer of fluorine-based polymer compound fine particles 14 and nickel 15 is applied thereon. Below are the results of a comparative experiment between the torch nozzle 1 that has been subjected to surface treatment to form 16 and the torch nozzle 1 that has been subjected to chromizing treatment, chromizing treatment, and hard chrome plating treatment on the surface of the conventional metal nozzle base material 10. state 3 to 7 show each torch nozzle 1 under the same conditions of use. This is a photograph comparing the state of adhesion of spatter 9 to the nozzle tip 2 of . FIG. 6.7 is a side view photograph of the torch nozzle 1.
サンプル■
第３図（ａｌ、 （ｂｌは、銅製のノズル基材１０の表
面に従来のクロマイジング処理を施したもので、使用後
にはノズル先端部２とその内面にスパッタ９が強固に付
着しており、該トーチノズル１の冷却後でもスパッタ９
は容易に剥離せずペンチや二、２パーでも全て除去する
ことが困難であり、ノズル先端部２の表面状態もやや悪
くなっている。Sample ■ Figure 3 (al, (bl) is a copper nozzle base material 10 whose surface has been subjected to conventional chromizing treatment, and after use, spatter 9 is firmly attached to the nozzle tip 2 and its inner surface. Even after cooling the torch nozzle 1, spatter 9
It does not peel off easily and is difficult to completely remove even with pliers or a knife, and the surface condition of the nozzle tip 2 is also somewhat poor.
サンプル■
第４図（ａｌ、 （ｂｌは、銅製のノズル基材１０の表
面に従来のクロマイジング処理を施したもので、サンプ
ル■と同様に使用後にはノズル先端部２とその内面にス
パッタ９が付着しており、サンプル■に比べてスパッタ
９は剥離し易いが、剥離した後のノズル先端部２の表面
はノズル基材１０の銅が現れて、更にトーチノズル１表
面に無数の微細な凹部が生じており、表面処理が破壊さ
れたことを息味している。Sample ■ Fig. 4 (al, (bl) is a copper nozzle base material 10 that has been subjected to conventional chromizing treatment on its surface. Similarly to sample ■, after use, spatter 9 is deposited on the nozzle tip 2 and its inner surface. Spatter 9 is more easily peeled off than in sample ①, but after peeling off, the copper of the nozzle base material 10 appears on the surface of the nozzle tip 2, and furthermore, there are countless minute recesses on the surface of the torch nozzle 1. This indicates that the surface treatment has been destroyed.
サンプル■
第５図（ａ）、 （ｂ）は、銅製のノズル基材ｌＯの表
面に従来の硬質クロムめっきを施して厚さ２０μｍのク
ロム層を形成したもので、サンプル■と同様にノズル先
端部２とその内面にスパッタ９が強固に付着しており、
またノズル先端部２が熔ｍし、スパッタ９の付着によっ
て該ノズル先端部２と溶接棒３とが短絡してスパークが
発生したことを意味し、トーチノズル１が高温になって
側面が熱により変色している。Sample ■ Figures 5 (a) and (b) are those in which a 20 μm thick chromium layer is formed by applying conventional hard chromium plating to the surface of a copper nozzle base material lO. Spatter 9 is firmly attached to the part 2 and its inner surface,
This also means that the nozzle tip 2 has melted and the spatter 9 has adhered to it, causing a short circuit between the nozzle tip 2 and the welding rod 3, causing a spark, and the torch nozzle 1 has become hot, causing the side surface to discolor due to the heat. are doing.
サンプル■
第６図は、銅製のノズル基材１０の表面に本発明の第５
実施例で示した表面処理を施したもので、ノズル基材１
０の表面に硬質クロムめっきを行い厚さ２０μｍのクロ
ム５１７を形成し、その上にフッ素系高分子化合物微粒
子１４とニッケル１５を共析させて厚さ８μｍの複合メ
ッキ層１６を形成し、また該複合メッキ層１６の前記フ
ッ素系高分子化合物微粒子１４の含有量を約２０体積％
となして、金属めっきの強度及び熱伝導性とフッ素系高
分子化合物の低摩擦性を備えたもので、使用後のノズル
先端部２の外面及び内面は、全くスパッタ９の付着がな
く使用前の光沢を保持し、処理した表面の劣化は全くな
く、また内面には使用中にスパッタ９が付着するが、た
だちに該スパッタ９の自重により容易に剥離した。Sample ■ FIG. 6 shows a fifth sample of the present invention on the surface of a copper nozzle base material
The nozzle base material 1 was subjected to the surface treatment shown in the example.
Hard chromium plating is performed on the surface of 0 to form chromium 517 with a thickness of 20 μm, and on top of that, fluorine-based polymer compound fine particles 14 and nickel 15 are eutectoided to form a composite plating layer 16 with a thickness of 8 μm. The content of the fluorine-based polymer compound fine particles 14 in the composite plating layer 16 is approximately 20% by volume.
It has the strength and thermal conductivity of metal plating and the low friction properties of fluorine-based polymer compound, and the outer and inner surfaces of the nozzle tip 2 after use have no spatter 9 attached to them before use. The treated surface retained its luster and there was no deterioration at all, and although spatter 9 adhered to the inner surface during use, it immediately peeled off easily due to its own weight.
サンプル■
第７図は、前記サンプル■と複合めっき層１６の厚さを
１５μｍとした以外は同じもので、使用後のノズル先端
部２の外面は、前記サンプル■と同様に全くスパッタ９
の付着がなく使用前の光沢を保持し、処理した表面の劣
化は全くなく、また内面には使用中にスパッタ９が付着
し、やはりただちに該スパッタ９の自重により剥離する
が、前記サンプル■と比較してエリ離性はやや劣り、更
に内面の表面状態が僅かに劣化している。Sample ■ Fig. 7 is the same as sample ■ except that the thickness of the composite plating layer 16 is 15 μm, and the outer surface of the nozzle tip 2 after use is completely free of spatter 9 as in sample ■.
There is no adhesion and the treated surface maintains its gloss before use, and there is no deterioration of the treated surface at all. Also, spatter 9 adheres to the inner surface during use and immediately peels off due to its own weight, but sample In comparison, the release properties are slightly inferior, and the inner surface condition is slightly deteriorated.
しかして、以上の各サンプルを同一条件で比較実験した
結果、サンプル■〜■で示した従来の溶接用トーチノズ
ル１は、そのノズル先端部２にスパッタ９が強固に付着
し、該スパッタ９も容易に剥離しないばかりか、トーチ
ノズル１の表面状態も大きく劣化して使用前の状態をと
どめてなく、更にノズル基材１０の一部が露出したり溶
損したりしており、付着したスパッタ９を除去しても再
度使用し得る表面状態ではなく、仮に使用したとしても
スパッタ９の付着はより激しく短時間で使用できなくな
るのに対し、サンプル■及び■で示した本発明を実施し
た溶接用トーチノズル１は、ノズル先端部２に全くスパ
ッタ９の付着がなく、また一時的に内面に付着しても該
スパッタ９の自重により容易に剥離するだけであるので
、トーチノズル１へのスパッタ９即ち熔融金属からの熱
伝達は少なく、即ち該トーチノズル１の温度上昇は少な
（、その為表面の劣化も殆どないものである。As a result of comparing the above samples under the same conditions, it was found that in the conventional welding torch nozzles 1 shown in samples 1 to 2, spatter 9 was firmly attached to the nozzle tip 2, and the spatter 9 was easily removed. Not only did it not peel off, but the surface condition of the torch nozzle 1 had deteriorated significantly and was no longer in the same state as before use.Furthermore, a part of the nozzle base material 10 was exposed or eroded, and the attached spatter 9 was removed. Even if the welding torch nozzle 1 of the present invention shown in Samples ■ and ■ is used, the surface condition is not such that it can be used again. The spatter 9 does not adhere to the nozzle tip 2 at all, and even if it temporarily adheres to the inner surface, it is easily peeled off due to its own weight. The heat transfer is small, that is, the temperature rise of the torch nozzle 1 is small (therefore, there is almost no surface deterioration).
また、前述のようにトーチノズル１の表面にスパッタ９
が殆ど付着しなく、該トーチノズル１の温度上昇も少な
いので、ノズル基材１ｏとして熱伝導の特に良い銅を用
いなくても、単価の安い鉄を用いることも可能である。In addition, as mentioned above, spatter 9 is applied to the surface of the torch nozzle 1.
Since almost no particles adhere to the torch nozzle 1, and the temperature rise of the torch nozzle 1 is also small, it is possible to use iron, which is inexpensive, instead of using copper, which has particularly good thermal conductivity, as the nozzle base material 1o.
尚、サンプル■と■を比較すれば、前記複合めっき層１
６の厚みが薄い方のサンプル■が優れており、これによ
って該複合メッキ層１６の厚みをより厚くしても、めっ
き液を多（使用するだけでスパッタ９の付着防止効果は
少なく、その上限は厚さ３０μｍ程度であり、一方散μ
ｍ以下では複合メッキ層１６の強度が弱く、めっき処理
における厚みの制御も難しくて実用的でなく、従って数
μｍ〜３０μｍの厚さに複合メッキ層１６を形成するこ
とが好ましい。Incidentally, if samples ■ and ■ are compared, the composite plating layer 1
Sample 6, which has a thinner thickness, is superior, and even if the thickness of the composite plating layer 16 is made thicker, the effect of preventing adhesion of spatter 9 is small even if a large amount of plating solution is used. has a thickness of about 30 μm, and is unilaterally distributed μ
If the thickness is less than m, the strength of the composite plating layer 16 will be weak, and it will be difficult to control the thickness in the plating process, making it impractical. Therefore, it is preferable to form the composite plating layer 16 with a thickness of several μm to 30 μm.
以上にしてなる本発明のスパッタ付着防止方法及びスパ
ッタ付着防止型溶接用トーチノズルによれば、ガスシー
ル式金屈製溶接用ノズルの表面にフッ素系高分子化合物
の表面硬化層を形成するか又は該フッ素系高分子化合物
を金属中に含有又は共存する表面硬化層を形成してなる
ので、フッ素系高分子化合物の素材自体のもつ低摩擦性
によってｌ・−サンプルの表面を滑落性の高いものとす
ることができ、アーク発生部から飛散する熔融金属、即
ちスパッタのノズル先端部への付着を防止し且つ付着し
てもスパッタの自重により容易に剥離するものであり、
その為スパッタのノズル先端部での滞留時間が短いので
該スパッタからノズル先端部への熱の伝達が少な（、更
に熱伝導性の良い金属製ノズルを用いているので、熱が
拡散し易く熱の集中がなく該トーチノズルの温度上昇も
少なく、金泥と比較して低温度で溶融するフッ素系高分
子化合物を有する表面硬化層の熱損傷も少ないものであ
る。According to the method for preventing spatter adhesion and the welding torch nozzle of the spatter adhesion prevention type of the present invention as described above, a surface hardening layer of a fluorine-based polymer compound is formed on the surface of the gas-sealed welding nozzle manufactured by Konku. Since a hardened surface layer is formed by containing or coexisting with a fluorine-based polymer compound in the metal, the surface of the sample can be easily slid down due to the low friction properties of the fluorine-based polymer material itself. It prevents molten metal, that is, spatter, scattered from the arc generating part from adhering to the nozzle tip, and even if it does adhere, it easily peels off due to the weight of the spatter.
Therefore, the residence time of the spatter at the nozzle tip is short, so there is little heat transfer from the spatter to the nozzle tip. There is no concentration of water, the temperature rise in the torch nozzle is small, and there is less thermal damage to the hardened surface layer containing a fluorine-based polymer compound that melts at a lower temperature than gold mud.
第１図は本発明のスパッタ付着防止型溶接用トーチノズ
ルの使用状態を図式的に示した省略断面図、第２図（ａ
ｌ、 （ｂｌ、 （ｃｌ、 （ｄ）、 （ｅｌはトーチ
ノズルの表面処理状態を図式的に示した部分断面図、第
３図（ａ）、 （ｂ）は従来のクロマイジング処理した
トーチノズルの使用後の写真、第４図ｔａ）、 ｔｂ）
は従来の力ロライジング処理したトーチノズルの使用後
の写真、第５図（ａｌ、 （ｂｌは従来の硬質クロムめ
っき処理したトーチノズルの使用後の写真、第６図及び
第７図は本発明の表面処理したトーチノズルの使用後の
写真である。
にトーチノズル、 ２：ノズル先端部、３；溶接棒、
４；溶接物、
５：接合部、 ６：アーク、
７：溶融部、 ８：シールドガス、９ニスバツタ
、 １０：ノズル基材、１１：フッ素系高分子化合
物層、１２：ニッケル層、１３ニクロム層、１４：フッ
素系高分子化合物微粒子、１５：ニソケル、 １６
：複合めっき層、１７：クロム層。FIG. 1 is an abbreviated cross-sectional view schematically showing how the spatter adhesion prevention type welding torch nozzle of the present invention is used, and FIG.
l, (bl, (cl, (d), (el) is a partial cross-sectional view schematically showing the surface treatment state of the torch nozzle, and Figures 3 (a) and (b) are the use of a conventional chromized torch nozzle. Later photos, Figure 4 ta), tb)
5 (al) is a photograph of a conventional torch nozzle subjected to hard chromium plating treatment after use, and FIGS. 6 and 7 are photographs of the surface of the present invention. This is a photograph of the treated torch nozzle after use. Torch nozzle, 2: Nozzle tip, 3: Welding rod,
4: Welded product, 5: Joint part, 6: Arc, 7: Melt part, 8: Shielding gas, 9 Varnish spatter, 10: Nozzle base material, 11: Fluorine-based polymer compound layer, 12: Nickel layer, 13 Nichrome layer , 14: Fluorine-based polymer compound fine particles, 15: Nisokel, 16
: Composite plating layer, 17: Chromium layer.
Claims (1)
高分子化合物を含有させて、該溶接用ノズルへのスパッ
タの付着を防止するスパッタ付着防止方法。 ２）ガスシール式金属製溶接用ノズルの表面にフッ素系
高分子化合物の表面硬化層を形成するか又は該フッ素系
高分子化合物を金属中に含有又は共存する表面硬化層を
形成してなるスパッタ付着防止型溶接用トーチノズル。 ３）前記表面硬化層として、ニッケルとフッ素系高分子
化合物を共析した層を形成したものとしてなる特許請求
の範囲第２項記載のスパッタ付着防止型溶接用トーチノ
ズル。 ４）前記フッ素系高分子化合物として、ポリテトラフル
オロエチレン、ポリクロロトリフルオロエチレン、ポリ
フッ化ビニリデン、テトラフルオロエチレン−ヘキサフ
ルオロプロピレン共重合体から選択した１種又は２種以
上のものを用いてなる特許請求の範囲第２項又は第３項
記載のスパッタ付着防止型溶接用トーチノズル。 ５）前記表面硬化層の厚みを数μｍ〜３０μｍとしてな
る特許請求の範囲第３項記載のスパッタ付着防止型溶接
用トーチノズル。 ６）フッ素系高分子化合物を表面付着又は微細な溝に埋
設してなる特許請求の範囲第２項記載のスパッタ付着防
止型溶接用トーチノズル。 ７）ノズル表面のクロマイジング処理した硬化層上に前
記表面硬化層を形成してなる特許請求の範囲第２項又は
第３項又は第４項又は第５項記載のスパッタ付着防止型
溶接用トーチノズル。[Claims] 1) A method for preventing spatter adhesion, which includes containing a fluorine-based polymer compound on the surface of a gas-sealed metal welding nozzle to prevent spatter from adhering to the welding nozzle. 2) Sputtering formed by forming a surface hardening layer of a fluorine-based polymer compound on the surface of a gas-sealed metal welding nozzle, or forming a surface hardening layer containing or coexisting with the fluorine-based polymer compound in the metal. Anti-stick welding torch nozzle. 3) The spatter adhesion prevention type welding torch nozzle according to claim 2, wherein the surface hardening layer is a layer formed by eutectoiding nickel and a fluorine-based polymer compound. 4) As the fluorine-based polymer compound, one or more selected from polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinylidene fluoride, and tetrafluoroethylene-hexafluoropropylene copolymer is used. A spatter adhesion prevention type welding torch nozzle according to claim 2 or 3. 5) The spatter adhesion prevention type welding torch nozzle according to claim 3, wherein the surface hardening layer has a thickness of several μm to 30 μm. 6) The spatter adhesion prevention type welding torch nozzle according to claim 2, wherein a fluorine-based polymer compound is attached to the surface or embedded in fine grooves. 7) Spatter adhesion prevention type welding torch nozzle according to claim 2, 3, 4, or 5, wherein the surface hardened layer is formed on a chromized hardened layer on the nozzle surface. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61138699A JPH0683900B2 (en) | 1986-06-14 | 1986-06-14 | Spatter adhesion prevention welding torch nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61138699A JPH0683900B2 (en) | 1986-06-14 | 1986-06-14 | Spatter adhesion prevention welding torch nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62296972A true JPS62296972A (en) | 1987-12-24 |
| JPH0683900B2 JPH0683900B2 (en) | 1994-10-26 |
Family
ID=15228056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61138699A Expired - Lifetime JPH0683900B2 (en) | 1986-06-14 | 1986-06-14 | Spatter adhesion prevention welding torch nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0683900B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565190A (en) * | 1991-09-03 | 1993-03-19 | Ishida Scales Mfg Co Ltd | Structure for preventing attachment of material being weighed in automatic weighing system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51116137A (en) * | 1975-04-04 | 1976-10-13 | Toshio Arakado | Welding nozzle and method of producing the same |
| JPS51129835A (en) * | 1975-05-07 | 1976-11-11 | Hitachi Seiko Kk | Device of preventing spatters on welding torch |
-
1986
- 1986-06-14 JP JP61138699A patent/JPH0683900B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51116137A (en) * | 1975-04-04 | 1976-10-13 | Toshio Arakado | Welding nozzle and method of producing the same |
| JPS51129835A (en) * | 1975-05-07 | 1976-11-11 | Hitachi Seiko Kk | Device of preventing spatters on welding torch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565190A (en) * | 1991-09-03 | 1993-03-19 | Ishida Scales Mfg Co Ltd | Structure for preventing attachment of material being weighed in automatic weighing system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0683900B2 (en) | 1994-10-26 |
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