CN102225486B - Welding wire-free manual swing welding method - Google Patents
Welding wire-free manual swing welding method Download PDFInfo
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- CN102225486B CN102225486B CN201110143606.7A CN201110143606A CN102225486B CN 102225486 B CN102225486 B CN 102225486B CN 201110143606 A CN201110143606 A CN 201110143606A CN 102225486 B CN102225486 B CN 102225486B
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Abstract
The present invention relates to welding procedure, be specifically related to a kind of welding wire-free manual swing welding method, its concrete steps are by the cutting of the tubing planet pipe cutting machine of welding, and use file equating; Open welding machine, pin ignition switch on electrode holder; With protective gas, air is drained to pipe fitting nitrogen blowing, then with elevated-temperature seal adhesive tape, pipe fitting two ends are sealed, and reserved two holes; Electric current is regulated to be greater than the 2-3 of normal weld doubly, circumferentially even spot welding four solder joints; Waving by wrist the angle controlling the swing of ceramic mouth during formal welding is 15 °-30 °, and the size of electric current is determined according to the speed of waving, pipe fitting diameter and wall thickness; Concrete welding time-division two periods relative arc carries out clockwise and counterclockwise welding respectively, and two sections of arcs are end to end, and have the distance of one section of about 15cm to overlap.Welding method of the present invention adopts mother metal and mother metal butt welding, without the need to welding wire, because this simplify operation, having saved cost, having improve crudy.
Description
Technical field
The present invention relates to welding procedure, be specifically related to a kind of welding wire-free manual swing welding method.
Background technology
Nuclear power station, heat power station, petrochemical industry, pipeline, stainless steel pipes etc. due to pipe diameter less, the stainless steel pipes that especially some wall thickness are thinner, owing to cannot carry out two-sided welding, therefore will ensure the quality of its weld seam, has larger difficulty.Protective gas is done with argon gas; electrode and heat source is done with tungsten electrode; weld ferrous metal and non-ferrous metal, thus obtain the welding point of better quality, be common GTAW; during the welding of this welding method; tungsten electrode is non-fusible, the overscale problems of electrodeless metal, and arc phenomenon is also comparatively simple; the repeatability of welding procedure is easy to again operation comparatively by force, is therefore applicable to the welding of thinner workpiece and thick workpiece argon arc welding back cover etc.But what the GTAW technique of routine adopted is continuous current, and current strength is larger and unchanged, is again direct welding, welding quality is difficult to ensure.For solving an above-mentioned difficult problem, occur waving method welding, it is a kind of welding gesture that what is called is waved method welding actual, it is by leaning against on welding base metal by the magnetic mouth of argon arc welding, utilize the flexibility of wrist, left and right selenodont swings welding gun and realizes welding process among a small circle, but common method of waving is welded, although improve welding quality to a certain extent, but sometimes still can not ensure fusion penetration through welding, and the welding wire head of fusing during welding easily departs from argon shield generation oxidation, make crudy stable not, and in welding process, also need welding wire, not only increase cost, and make operation easier higher.
Summary of the invention
The invention provides a kind of welding wire-free manual swing welding method, the method, without the need to welding wire, not only reduces cost, and processing ease, improves the quality of processing.
For achieving the above object, by the following technical solutions:
A kind of welding wire-free manual swing welding method, comprises the steps:
(1), by the planet pipe cutting machine cutting of the tubing of welding, the tubing file equating of well cutting;
(2), by welding machine energising connect argon gas, pin ignition switch on electrode holder, regulate suspended body flowmeter, make PAGE control in critical field;
(3), weld front protective gas to pipe fitting purge, drain air, then with high-temperature seal adhesive, pipe fitting two ends are sealed, reserved two holes, as air admission hole and the venthole of welding;
(4), regulate electric current to be greater than the 2-3 of normal weld doubly, logical argon gas, the even spot welding of solderless wrapped connection mouth four solder joints, spot welding time controling is within 2 seconds;
(5), initial current is turned down in normal current, the size of electric current is determined according to the speed of waving, pipe fitting diameter and wall thickness, start formal welding, tungsten pin controls exposing ceramic head 2mm, distance from pipe fitting face is 1mm, waving by wrist the angle controlling the swing of ceramic mouth is 15 °-30 °, should stop 2-4 second, make weld seam abundant molten when playing weldering at start position.
As a further improvement on the present invention, the arc that formally the welding time-division two periods is relative carries out welding clockwise and counterclockwise respectively, and two sections of arcs are end to end, and have the distance of one section of about 15mm to overlap.
As further improving, the described protective gas for purge pipe fitting is nitrogen.
Welding method of the present invention adopts mother metal and mother metal butt welding, does not need to add any material, especially without the need to welding wire, not only simplify operation, and saved cost, during spot welding, initial current tunes up and passes to protective gas, such solder joint can not be oxidized, and tube surface easily can not play casting skin; During formal welding, initial current is turned down in normal current, make heat affected area little as far as possible; Points of two sections relative arcs carry out clockwise and counterclockwise welding respectively, and two sections of arcs are end to end, and have the distance of one section of about 15mm to overlap, and ensure that junction can fusion penetration through welding, improve crudy.
Accompanying drawing explanation
According to embodiment and accompanying drawing, the present invention is described in further detail below.
Fig. 1 is the welding sequence schematic diagram of the inventive method.
In figure:
1, the first starting point C; 2, First terminal point A; 3, the second starting point B; 4, the second terminal D.
Detailed description of the invention
As shown in Figure 1, give a specific embodiment of the present invention, in figure, step of the present invention comprises:
(1), by the planet pipe cutting machine cutting of the tubing of welding, the tubing file equating of well cutting;
(2), by welding machine energising connect argon gas, pin ignition switch on electrode holder, regulate suspended body flowmeter, make PAGE control in critical field;
(3), weld front protective gas to pipe fitting purge, drain air, then with high-temperature seal adhesive, pipe fitting two ends are sealed, reserved two holes, as air admission hole and the venthole of welding;
(4), regulate electric current to be greater than the 2-3 of normal weld doubly, logical argon gas, the even spot welding of solderless wrapped connection mouth four solder joints, spot welding time controling is within 2 seconds;
(5), initial current is turned down in normal current, the size of electric current is determined according to the speed of waving, pipe fitting diameter and wall thickness, start formal welding, tungsten pin controls exposing ceramic head 2mm, distance from pipe fitting face is 1mm, waving by wrist the angle controlling the swing of ceramic mouth is 15 °-30 °, should stop 2-4 second, make weld seam abundant molten when playing weldering at start position.
The wherein said protective gas for purge pipe fitting is nitrogen; Concrete welding time-division two periods relative arc welds respectively, two sections of arcs are end to end, as shown in Figure 1, first the welded clockwise along the first starting point C1 to First terminal point A2, along the second starting point B3 to the second terminal D4 counterclockwise welding after completing, two sections of arc head and the tail junctions respectively have one section of C-B, A-D to be about the distance coincidence of 15mm, and junction, through twice welding, ensure that C-B, A-D place, junction can fusion penetration through welding.
Welding method of the present invention adopts mother metal and mother metal butt welding, does not need to add any material, especially without the need to welding wire, not only simplify operation, and saved cost, during spot welding, initial current tunes up and passes to protective gas, such solder joint can not be oxidized, and tube surface easily can not play casting skin; Turn down in normal current by initial current during formal welding, the heat affected area made is little as far as possible; Points of two sections relative arcs carry out clockwise and counterclockwise welding respectively, and two sections of arcs are end to end, and have the distance of one section of about 15mm to overlap, and ensure that junction can fusion penetration through welding, improve crudy.
Claims (2)
1. a welding wire-free manual swing welding method, is characterized in that comprising the steps:
(1), by the planet pipe cutting machine cutting of the tubing of welding, the tubing file equating of well cutting;
(2), by welding machine energising connect argon gas, pin ignition switch on electrode holder, regulate suspended body flowmeter, make PAGE control in critical field;
(3), weld front protective gas to pipe fitting purge, drain air, then with high-temperature seal adhesive, pipe fitting two ends are sealed, reserved two holes, as air admission hole and the venthole of welding;
(4), regulate electric current to be greater than the 2-3 of normal weld doubly, logical argon gas, the even spot welding of solderless wrapped connection mouth four solder joints, spot welding time controling is within 2 seconds;
(5) initial current is turned down in normal current, the size of electric current is determined according to the speed of waving, pipe fitting diameter and wall thickness, start formal welding, tungsten pin controls exposing ceramic head 2mm, distance from pipe fitting face is 1mm, waving by wrist the angle controlling the swing of ceramic mouth is 15 °-30 °, should stop 2-4 second, make weld seam abundant penetration when playing weldering at start position;
Formal welding time-division two periods relative arc carries out clockwise and counterclockwise welding respectively, and two sections of arcs are end to end, and respectively have the distance of one section of 15mm to overlap.
2. a kind of welding wire-free manual swing welding method according to claim 1, is characterized in that, the described protective gas for purge pipe fitting is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110143606.7A CN102225486B (en) | 2011-05-31 | 2011-05-31 | Welding wire-free manual swing welding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110143606.7A CN102225486B (en) | 2011-05-31 | 2011-05-31 | Welding wire-free manual swing welding method |
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| Publication Number | Publication Date |
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| CN102225486A CN102225486A (en) | 2011-10-26 |
| CN102225486B true CN102225486B (en) | 2015-12-02 |
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| CN201110143606.7A Active CN102225486B (en) | 2011-05-31 | 2011-05-31 | Welding wire-free manual swing welding method |
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| CN103170711B (en) * | 2013-03-22 | 2015-08-19 | 中国华冶科工集团有限公司 | Manual " crank weldering " method of TIG weldering |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1883864A (en) * | 2005-06-23 | 2006-12-27 | 上海锅炉厂有限公司 | 45 DEG all-position back-sealing butt welding method for pipe with small diameter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61126971A (en) * | 1984-11-22 | 1986-06-14 | Mitsubishi Heavy Ind Ltd | Tig welding method of pipe material |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1883864A (en) * | 2005-06-23 | 2006-12-27 | 上海锅炉厂有限公司 | 45 DEG all-position back-sealing butt welding method for pipe with small diameter |
Non-Patent Citations (4)
| Title |
|---|
| 不填丝手工钨极氩弧焊在管道焊接中的应用;冯克利;《化工施工技术》;19920430(第2期);第23页左栏第6-11行、第23页右栏第10-12行、第24页左栏第7行-右栏第10行 * |
| 奥氏体不锈钢的摇摆焊接工艺研究;余世宏;《焊接技术》;20010930;第30卷;第99页 * |
| 小直径45°固定管TIG 打底层焊接技术;沈亚仁;《电焊机》;20110131;第41卷(第1期);第55-57页 * |
| 镍合金管材焊接工艺的应用于质量管理;许峰;《江汉石油科技》;20101231;第20卷(第4期);第2.2-2.4.1、3.5.1节 * |
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Effective date of registration: 20151021 Address after: South Gate Town Industrial Park, 214400 Jiangyin Road, Jiangsu: city of Wuxi Province Applicant after: DUAN ZHONGDA Address before: Chong'an District 214000 Yongding Xiang Jiangsu province Wuxi City No. 15 room 2303 Applicant before: Sun Hongwei Applicant before: Gong Xiaozhong |
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