WO2010150422A1 - 管材の溶接方法およびシールドガス充填用発泡剤 - Google Patents
管材の溶接方法およびシールドガス充填用発泡剤 Download PDFInfo
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- WO2010150422A1 WO2010150422A1 PCT/JP2009/069203 JP2009069203W WO2010150422A1 WO 2010150422 A1 WO2010150422 A1 WO 2010150422A1 JP 2009069203 W JP2009069203 W JP 2009069203W WO 2010150422 A1 WO2010150422 A1 WO 2010150422A1
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- foam layer
- foaming agent
- shielding gas
- foam
- filling
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/162—Arc welding or cutting making use of shielding gas making use of a stationary fluid
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
Definitions
- the present invention relates to a pipe welding method and a shielding gas filling foaming agent, and more particularly to a pipe welding method and a shielding gas filling foaming agent capable of improving shield gas retention performance and workability.
- a foam layer is formed inside the pipe material and the inside of the pipe material is sealed, and the foam layer is sealed.
- a method is used in which the space is filled with a shielding gas (back shield) and the pipe material is welded.
- the foaming agent for shielding gas filling is used for formation of this foam layer.
- the shielding gas atmosphere inside a pipe material is appropriately hold
- Patent Document 1 The technique described in Patent Document 1 is known as such a conventional welding method for pipe materials.
- a foaming agent for filling a shielding gas a technique using a alkanolamine salt of a saturated fatty acid, an alkanolamide of a saturated fatty acid, and a chemical mixed with water and alcohol as a solvent, as described in Patent Documents 1 to 3, is known. It has been.
- the pipe material welding method it may take a long time from the formation of the foam layer to the welding of the pipe material, and a long-term holding performance over several days may be required due to construction work.
- the foaming agent for filling a shielding gas it is required that the formed foam layer can be stably held for a long time.
- the formed foam layer can be held for 24 hours or more.
- the retention performance for multiple days or more is not clear. Therefore, in order to cope with actual construction without any problem, further improvement in shielding gas retention performance has been demanded.
- foam may need to be filled from the gap after groove alignment, such as partial repair, but the conventional technology has a problem that it cannot be handled because it is difficult to fill the foam from the gap. Therefore, improvement of workability in addition to shielding gas retention performance has been desired.
- an object of the present invention is to provide a pipe welding method and a shielding gas filling foaming agent that can improve the shielding gas retention performance and workability of the foam layer.
- a method for welding pipes according to the present invention is a method for welding pipes by forming a foam layer inside the pipe and filling a space sealed by the foam layer with a shielding gas.
- a foaming agent for filling a shield gas containing keratin protein is used for forming the foam layer.
- the foaming agent for filling a shielding gas according to the present invention is a foaming agent for shielding which forms a foam layer by being injected and foamed into a pipeline to seal the pipeline, and contains keratin protein. It is characterized by.
- the foam layer has a foam layer in comparison with the configuration in which the shielding gas filling foaming agent not containing protein and the shielding gas filling foaming agent containing collagen protein are used. Since retention and pressure resistance are improved, there is an advantage that shield gas retention performance is improved.
- the keratin protein has amphipathic properties, which lowers the viscosity of the foam and lowers the pressure loss that occurs at the nozzle during spraying. There are advantages to doing.
- FIG. 1 is an explanatory view showing a pipe welding method according to this embodiment.
- FIG. 2 is an explanatory view showing a pipe material welding method according to this embodiment.
- FIG. 3 is an explanatory view showing a pipe welding method according to this embodiment.
- FIG. 4 is an explanatory view showing a pipe welding method according to this embodiment.
- FIG. 5 is an explanatory view showing a pipe welding method according to this embodiment.
- FIG. 6 is an explanatory view showing a spray device used in the pipe material welding method described in FIGS.
- FIG. 7-1 is a table showing the results of a performance test regarding the retention of the foam layer.
- FIG. 7-2 is a table showing the results of a performance test relating to the retention of the foam layer.
- FIG. 8 is a table showing an evaluation method of a performance test related to the retention of the foam layer.
- FIG. 9 is a block diagram showing a foam layer evaluation apparatus.
- FIG. 10 is a table showing the results of a performance test regarding the pressure resistance of the foam layer.
- FIG. 11 is a table showing an evaluation method of a performance test regarding the pressure resistance of the foam layer.
- FIG. 12 is an explanatory diagram showing a test method of a performance test regarding the moving distance of the foam layer.
- FIG. 13 is a table showing the results of a performance test regarding the moving distance of the foam layer.
- this pipe material welding method For example, when welding steel pipes, alloy steel pipes, stainless steel pipes, aluminum pipes, etc., this pipe material welding method forms a foam layer inside the pipe material and seals the inside of the pipe material, and is sealed by this foam layer.
- This method is applied to a pipe welding method in which a shield gas (back shield) is filled in a closed space and the pipe is welded.
- a shield gas back shield
- a pair of pipe materials 1 and 1 to be welded are arranged with their welds abutted against each other (see FIG. 1).
- a pair of long and narrow cylindrical tubes 1 and 1 are arranged with their end portions abutted against each other.
- a foam layer S is formed at a predetermined position in the tube material 1 (see FIG. 2).
- the nozzle 22 of the spray device 2 is inserted into the cylindrical tube 1 from the abutting portion of the cylindrical tubes 1 and 1, and a foaming agent for filling a shielding gas is injected into the tube material 1 through the nozzle 22.
- foaming foam layer S is formed in the predetermined position in the pipe material 1 by foaming the foaming agent for shielding gas filling.
- this foam layer S is formed in both of the pair of pipe materials 1 and 1 which were faced
- the shielding gas filling foaming agent will be described later.
- the spray device 2 is a device for injecting a shielding gas filling foaming agent, and includes, for example, a main body 21, a nozzle 22, and a stopper (guide) 23 (see FIG. 6).
- the main body 21 is a container that contains a shielding gas filling foaming agent.
- the nozzle 22 is a long tube drawn from the main body 21 and serves as an injection path for the shielding gas filling foaming agent.
- the nozzle 22 is made of a flexible material (for example, a resin material such as plastic or fluororesin) so that the nozzle 22 can be inserted into the tube 1 while being curved.
- the nozzle 22 is made of a fluororesin material.
- the foamability of the foaming agent for filling the shielding gas and the wear resistance of the nozzle 22 are enhanced.
- the nozzle 22 made of such a fluororesin is preferable because it does not damage the inner wall of the tube material 1.
- the tip shape of the nozzle 22 is configured by, for example, an open end shape, a trumpet shape, or a shape having an injection hole on a side portion.
- the stopper 23 is a member that regulates the insertion length of the nozzle 22 with respect to the tube material 1 and is made of, for example, a silicon rubber material. The stopper 23 comes into contact with the butted portion of the pipe materials 1 and 1 when the nozzle 22 is inserted into the pipe material 1 from the end thereof.
- the insertion length of the nozzle 22 with respect to the pipe material 1 is regulated, and the end of the nozzle 22 is arranged at a predetermined position (position where the foam layer S should be formed).
- the length of the nozzle 22 is set in the range of 30 [cm] to 50 [cm], in which foam can be formed at a distance sufficiently away from the welded portion so as not to be affected by the heat generated during welding.
- the shielding gas G is filled into the tubular material 1 from the butted portion of the tubular materials 1 and 1, and a shielding gas atmosphere is formed between the foam layers S and S (see FIG. 4). And after the edge part of the pipe materials 1 and 1 is faced
- the foam (foaming agent for filling the shield gas) that forms the foam layer S is water-soluble, the foam layer S can be easily washed with water, and the residual foreign matter in the tube material 1 is reduced.
- the shielding gas G for example, an inert gas such as argon gas or helium gas is used.
- an arc welding machine is used for welding the pipe material 1.
- Foaming agent for shielding gas filling in this pipe material welding method, in forming the foam layer S, it is preferable to use a foaming agent for filling a shielding gas containing keratin protein.
- a foaming agent for filling a shielding gas containing no protein and a foaming agent for filling a shielding gas containing collagen protein are used, (1) the retentivity of the foam layer S (foam property of the foam) is increased. Further, there is an advantage that (2) the pressure resistance of the foam layer S is improved. Further, since the keratin protein has amphipathic properties, (3) there is an advantage that the viscosity of the foaming agent is lowered.
- the shielding gas atmosphere is properly maintained for a long time.
- a certain period of time may be provided from the formation of the foam layer S of the pipe welding method to the welding of the pipe 1 for the convenience of the whole process. For this reason, the longer the foamable layer S can be held, the longer the time from the formation of the foam layer S to the welding of the pipe 1 can be set, and the adjustment of the welding method of the pipe and other processes becomes easier. It is preferable for the convenience of construction.
- the viscosity of the foaming agent is lowered because the viscosity of the jetted foam is lowered and the degree of freedom of construction is widened.
- the lower the foam viscosity the smaller the pressure loss that occurs at the nozzle during injection, so the foam layer is formed using a longer and narrower nozzle (for example, a nozzle having an inner diameter of 2 [mm] and a length of 500 [mm]) 22. S can be formed. Then, since the nozzle 22 can be inserted even from a narrow gap between the butted portions of the pipe materials 1 and 1, the foam layer S can be formed regardless of the timing before and after the groove alignment. Thereby, it is not necessary to adjust another process for forming the foam layer S.
- the blending ratio of LPG is preferably in the range of 10 [%] to 40 [%], and more preferably in the range of 15 [%] to 35 [%].
- keratin protein is extracted from animal hair, skin keratin, hair, nails and the like, and particularly constitutes 80% or more of human hair.
- the amino acid composition of keratin protein contains about 10% of cystine which is hardly present in other proteins. Since cystine has a disulfide bond (SS bond) in the molecule, the peptide chain of keratin protein is networked by disulfide bonds derived from cystine, and as a result, keratin protein has a certain mechanical strength. It has been known.
- the concentration of keratin protein applied to the shielding gas filling foaming agent is 0.1 [%] or more and 5 [%] or less.
- the foam retention property, pressure resistance, and viscosity of the shielding gas filling foaming agent are optimized, and thus there is an advantage that both the shielding gas retaining performance and workability of the shielding gas filling foaming agent can be achieved.
- the concentration of keratin protein exceeds 5%, the foam viscosity becomes excessive, and workability is lost.
- the concentration of keratin protein is less than 0.1 [%], the effect of improving foam retention and pressure resistance due to the addition of keratin protein does not appear sufficiently, which is not preferable.
- the foaming agents for filling the shield gas of Example 1, Comparative Example 1 and Comparative Example 2 are (a) stearic acid triethanolamine salt, (b) coconut oil fatty acid diethanolamide, (c) alcohol, (D) Protein, (e) Prepared with water.
- A) Stearic acid triethanolamine salt and (b) coconut oil fatty acid diethanolamide are used as a foaming agent for stabilizing fine bubbles (foam).
- C) Alcohol is used as a solvent and a stabilizer.
- D) Protein is mainly used to ensure foam water retention and adhesion to metal.
- Water is used as a solvent.
- the compounding ratio of these components can be optimized within the range obvious to those skilled in the art.
- Example 1 keratin protein (blending ratio 5 [%]) is used.
- Comparative Example 1 collagen protein is used, and in Comparative Example 2, casein protein is used.
- the conventional foaming agent for filling a shielding gas is a commercially available product (trade name “Sunfoam P-30”) and does not contain keratin protein.
- Example 1 the foam properties immediately after injection and after being left for 24 hours are maintained as “ ⁇ : hard and stable foam ”, which is preferable to Comparative Example 1 and Comparative Example 2 (FIG. 7-1 and FIG. 8). Further, the foam properties after standing for 48 hours remain at “ ⁇ : relatively hard foam (decrease in bubble density)”, which is more preferable than the conventional example in which “ ⁇ : loss of foam density”. Thus, it turns out that the retainability of foam layer S improves because the foaming agent for shielding gas filling contains keratin protein.
- the foaming agents for filling the shield gas of Example 6, Example 7 and Comparative Example 3 are (a) stearic acid triethanolamine salt, (b) coconut oil fatty acid diethanolamide, (c) It is prepared with alcohol, (d) keratin protein, and (e) water. In addition, (d) the ratio of keratin protein is selected from 0.5 [%], 0.1 [%] and 0.0 [%], and (e) the ratio of water is adjusted accordingly. Has been.
- Example 6 and Example 7 the foam properties immediately after injection and after standing for 48 hours are maintained as “ ⁇ : relatively hard foam”, which is preferable to Comparative Example 3 (FIG. 7). -2 and Figure 8).
- the retainability of foam layer S improves because the foaming agent for shielding gas filling contains keratin protein.
- a small amount (0.1 [%]) of keratin protein is blended as in Example 7, a preferable test result is obtained over Comparative Example 3 in which no keratin protein is blended.
- Example 6 and Example 7 are compared, Example 6 having a blending ratio of 0.5 [%] has a foam property of “ ⁇ : loss of bubble density” after one week. And more preferable than Example 7 having a blending ratio of 0.1 [%]. Therefore, it can be seen that the retention of the foam layer S is improved by optimizing the blending ratio of the keratin proteins.
- the prepared spray gas filling agent and the propellant LPG are in a ratio of 2: 1 by weight ratio (LPG weight ratio 33.3 [%]). (See FIG. 6).
- the foaming agent for filling the shielding gas is injected into the cylindrical acrylic tube 10 (inner diameter 50 [mm] and length 300 [mm]), and a foam layer S is formed inside the acrylic tube 10.
- the acrylic tube 10 whose both ends are opened is left in a vertically placed state at a temperature of 20 [° C.].
- the evaluation apparatus 3 is used to apply an internal pressure to the acrylic tube 10.
- the internal pressure is increased at a rate of 5 [mmH20 / min], and the internal pressure when the increase in the internal pressure stops (the foam layer S collapses) is measured and evaluated (see FIG. 9).
- the evaluation is performed in four stages of ⁇ , ⁇ , ⁇ , and ⁇ , and the more ⁇ side, the more difficult the bubbles are to collapse (see FIG. 8).
- the evaluation device 3 includes a pressure adjusting acrylic tube 31, a flow meter 32, a manometer 33, a pressure adjusting valve (flow variable valve) 34, and an internal pressure releasing valve 35 (see FIG. 9). Further, the pressure-adjusting acrylic tube 31 and the acrylic tube 10 on which the foam layer S is formed are connected via a connecting tube 36. In this evaluation device 3, the compressed air is introduced into the pressure adjusting acrylic tube 31 via the flow meter 32. The manometer 33 and the pressure adjusting valve 34 are used to adjust the air pressure in the pressure adjusting acrylic tube 31. Thereby, the air pressure in the acrylic tube 10 is adjusted.
- the shielding gas filling foaming agents of Examples 2 to 5 are (a) stearic acid triethanolamine salt, (b) coconut oil fatty acid diethanolamide, (c) alcohol, (d) keratin protein, (E) It is prepared with water and has common components. However, (d) the mixing ratio of keratin protein is selected from 3.0 [%], 4.0 [%] and 5.0 [%], and other components (a) to (c) are selected accordingly. ) And (e) are adjusted.
- the conventional foaming agent for filling a shielding gas is a commercially available product (trade name “Sunfoam P-30”) and does not contain keratin protein.
- the pressure resistance of the foam layer S immediately after injection is at the level of “ ⁇ : 20 [mmH20 / min]”, and “ ⁇ : 5 [mmH20 / min]”. Is more preferable than the conventional example (see FIGS. 10 and 11).
- the pressure resistance of foam layer S improves because the foaming agent for shielding gas filling contains keratin protein.
- the pressure resistance of the foam layer S after standing for 1 week is at the level of “ ⁇ : 10 [mmH20 / min]”, which is more preferable than Example 4 and Example 5.
- the pressure resistance of the foam layer S improves by optimizing the ratio of (d) keratin protein.
- the shielding gas filling foaming agent of Example 1 containing keratin protein (see FIG. 7-1) is compared with the conventional shielding gas filling foaming agent.
- the foaming agent for filling a shielding gas of Example 1 has a shorter moving distance of the foam layer with respect to the elapsed time than the foaming agent for filling a shielding gas of the conventional example (see FIG. 13). That is, in the foaming agent for filling a shielding gas of Example 1, the foam layer S is difficult to move even when a differential pressure is generated inside the pipe material 1 due to a difference in the specific gravity of the atmosphere due to a temperature difference in the unit at the construction site. Compared to the conventional example, the shielding gas atmosphere is more appropriately secured. Therefore, it can be seen that when the shielding gas filling foaming agent contains keratin protein, the shielding gas retention performance under the differential pressure condition is improved.
- the pipe material welding method and the shielding gas filling foaming agent according to the present invention are useful in that the shielding gas retention performance and workability can be improved.
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Abstract
Description
この管材の溶接方法は、例えば、鋼管、合金鋼管、ステンレス管、アルミニウム管などの溶接時にて、管材の内部に泡沫層を形成して管材の内部を封止し、この泡沫層により封止された空間にシールドガス(バックシールド)を充填して管材を溶接する管材の溶接方法に適用される。以下、この管材の溶接方法について図面を参照しつつ詳細に説明する(図1~図6参照)。
ここで、この管材の溶接方法では、泡沫層Sの形成にあたり、ケラチンタンパク質を含むシールドガス充填用発泡剤が用いられることが好ましい。かかる構成では、たんぱく質を含まないシールドガス充填用発泡剤およびコラーゲンタンパク質を含むシールドガス充填用発泡剤が用いられる構成と比較して、(1)泡沫層S(泡沫の泡性状)の保持性が向上し、また、(2)泡沫層Sの耐圧性が向上する利点がある。また、ケラチンタンパク質が両親媒性を有するので、(3)泡剤の粘度が低下する利点がある。
泡沫層の保持性に関する性能試験では、まず、調製されたシールドガス充填用発泡剤と噴射剤であるLPG(Liquefied petroleum gas)とが重量比2:1(LPGの重量比33.3[%])の割合でスプレー缶2(図6参照)に充填される。次に、このシールドガス充填用発泡剤が円筒形状のアクリル管(内径50[mm]かつ長さ300[mm])の内部に噴射されて、アクリル管の内部に泡沫層Sが形成される。そして、両端を解放したアクリル管が縦置き状態にて温度20[℃]の条件下で放置される。その後に、所定時間の経過後における泡沫層Sの性状が目視にて観察されて、評価が行われる。評価は、◎、○、△および×の4段階にて行われ、◎側であるほど好ましい(図8参照)。
泡沫層の耐圧性に関する性能試験では、調製されたシールドガス充填用発泡剤と噴射剤であるLPGとが重量比2:1(LPGの重量比33.3[%])の割合でスプレー缶2(図6参照)に充填される。次に、このシールドガス充填用発泡剤が円筒形状のアクリル管10(内径50[mm]かつ長さ300[mm])の内部に噴射されて、アクリル管10の内部に泡沫層Sが形成される。次に、両端を解放したアクリル管10が縦置き状態にて温度20[℃]の条件下で放置される。次に、所定時間の放置後に、評価装置3が用いられてアクリル管10に内圧が付加される。そして、内圧が5[mmH20/min]の速度で加圧され、内圧の上昇が停止(泡沫層Sが崩壊)したときの内圧が計測されて、評価が行われる(図9参照)。評価は、◎、○、△および×の4段階にて行われ、◎側であるほど泡が崩壊し難く好ましい(図8参照)。
泡沫層の移動距離に関する性能試験では、調製されたシールドガス充填用発泡剤と噴射剤であるLPGとが重量比2:1(LPGの重量比33.3[%])の割合でスプレー缶2(図6参照)に充填される。次に、このシールドガス充填用発泡剤が円筒形状のステンレス管20(内径50[mm]かつ長さ600[mm])の内部に噴射されて、ステンレス管20の内部に泡沫層Sが形成される。次に、評価装置3(図9参照)が用いられてステンレス管20に内圧5[mmH20]が付加される。そして、ステンレス管20を縦置きにして温度20[℃]の条件下で放置する(図12参照)。次に、所定時間の放置後に、泡沫層Sの長さおよび移動距離が測定される。そして、この測定結果に基づいて評価が行われる。
2 スプレー装置(スプレー缶)
21 本体部
22 ノズル
23 ストッパー
3 評価装置
31 圧力調整用アクリル管
32 流量計
33 マノメータ
34 圧力調整用バルブ
35 内圧開放用バルブ
36 接続管
10 アクリル管
20 ステンレス管
G シールドガス
S 泡沫層
Claims (2)
- 管材の内部に泡沫層を形成すると共に前記泡沫層により封止された空間にシールドガスを充填して前記管材を溶接する管材の溶接方法であって、
前記泡沫層の形成にあたり、ケラチンタンパク質を含むシールドガス充填用発泡剤が用いられることを特徴とする管材の溶接方法。 - 管路に噴射されて発泡することにより泡沫層を形成して前記管路を封止するシールド用発泡剤であって、
ケラチンタンパク質を含むことを特徴とするシールドガス充填用発泡剤。
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KR1020117017203A KR101323883B1 (ko) | 2009-06-25 | 2009-11-11 | 관재의 용접 방법 및 실드 가스 충전용 발포제 |
CN200980155563.5A CN102300664B (zh) | 2009-06-25 | 2009-11-11 | 管材的焊接方法及保护气体填充用发泡剂 |
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CN105081588B (zh) * | 2015-06-26 | 2017-01-25 | 浙江时空能源技术有限公司 | 电池包汇流排激光焊多点焊接夹紧装置 |
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- 2009-06-25 JP JP2009151216A patent/JP5610715B2/ja active Active
- 2009-11-11 CN CN200980155563.5A patent/CN102300664B/zh active Active
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JPH06505406A (ja) * | 1991-01-24 | 1994-06-23 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | 消火コンセントレート(concentrate)として有用な水性フィルム形成発泡性溶液 |
JPH11170050A (ja) * | 1997-12-12 | 1999-06-29 | Toden Kogyo Co Ltd | 配管の現場溶接作業における溶接欠陥の防止法 |
JP2003519269A (ja) * | 2000-01-07 | 2003-06-17 | ラソアー・アクチェン・ゲゼルシャフト | 断熱フォーム生成のためのバロメトリックセルにより発泡可能な組成物 |
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KR20110110215A (ko) | 2011-10-06 |
CN102300664B (zh) | 2015-05-13 |
JP5610715B2 (ja) | 2014-10-22 |
JP2011005516A (ja) | 2011-01-13 |
CN102300664A (zh) | 2011-12-28 |
KR101323883B1 (ko) | 2013-10-30 |
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