CN100450692C - Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method - Google Patents

Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method Download PDF

Info

Publication number
CN100450692C
CN100450692C CN 200610121459 CN200610121459A CN100450692C CN 100450692 C CN100450692 C CN 100450692C CN 200610121459 CN200610121459 CN 200610121459 CN 200610121459 A CN200610121459 A CN 200610121459A CN 100450692 C CN100450692 C CN 100450692C
Authority
CN
China
Prior art keywords
welding
range
min
peak
inch
Prior art date
Application number
CN 200610121459
Other languages
Chinese (zh)
Other versions
CN101077547A (en
Inventor
识 唐
张伟栋
徐建魁
苑占波
范群喜
董玉川
韩乃山
Original Assignee
中国核工业第二三建设公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中国核工业第二三建设公司 filed Critical 中国核工业第二三建设公司
Priority to CN 200610121459 priority Critical patent/CN100450692C/en
Publication of CN101077547A publication Critical patent/CN101077547A/en
Application granted granted Critical
Publication of CN100450692C publication Critical patent/CN100450692C/en

Links

Abstract

本发明涉及一种用于大厚壁管道窄间隙钨极惰性气体保护全位置自动焊接方法,所述管道的直径≥325mm,壁厚大于等于40mm,包括步骤:使所述管道母材的相对端部形成焊前组合坡口,对根部钝边和下钝边的底部进行打底焊接,对下钝边和上坡口进行填充焊接,所述填充焊接为单层单道焊,以及对上坡口的顶部进行盖面焊接,盖面焊接可以采用线性焊道或摆动焊道。 The present invention relates to a narrow gap large thick pipe tungsten inert gas for protecting all position welding method, the diameter of the pipe ≥325mm, a wall thickness not less than 40mm, comprising steps of: opposing ends of the pipe base material before welding portion is formed composition groove, the root of the blunt edge and bottom edge of the weld backing for blunt, blunt edge of the filling port and uphill welding, the welding filler monolayer single run, as well as uphill opening a lid top face of welding, the welding surface of the cover can pivot or linear weld bead. 本发明的方法具有焊接熔敷金属的填充量小、焊接成本相对比较低、焊接效率高等优点。 A small amount of filling method of the present invention having a weld metal welding, the welding is relatively low cost, high efficiency welding.

Description

大厚壁管道窄间隙全位置自动焊接方法及其制造的管道 Large thick pipe narrow gap all position welding pipe manufacturing method and

技术领域 FIELD

本发明涉及一种大厚壁管道全位置自动焊接方法,尤其是涉及一种使用诸如大厚壁管道窄间隙钨极惰性气体保护全位置自动焊接方法。 The present invention relates to a large thick pipe all position welding process, in particular to a thick pipe such as a large narrow gap Tungsten Inert Gas all position welding using a protective method. 本发明还涉及通过厚壁管道全位置自动焊接方法制造的管道。 The present invention further relates to a pipe produced by the thick pipe all position welding. 背景技术 Background technique

目前,国内外采用管道全位置自动焊的工艺主要有TIG气体保护焊工艺和MIG气体保护焊工艺,而这两种工艺主要应用焊接小直径薄壁管(管道直径小<325咖、管壁厚度h〈40腦的焊接。对于大厚壁管道(管道直径小》325mm、管壁厚度h》40腿)焊接通常采用的是手工氩弧焊打底和焊条电弧填层和盖面的工艺(以下简称氩电联合焊接工艺), 其坡口型式大都为双"U"形组合坡口,焊接采用单层多道焊,在图l中形式了氩电联合焊接工艺涉及到的常见焊接坡口型式,在图2中显示了氩电联合焊接工艺焊接的单层多道焊的焊缝示意图。 At present, domestic pipe using all position welding process are TIG and MIG welding process gas shielded gas welding process, which two processes mainly use welding thin-walled tube of small diameter (small diameter pipes <325 coffee wall thickness h <40 welded brain. for large thick-walled pipes (pipe diameter small "325mm, wall thickness h" 40 legs) welding is commonly used in electric arc welding and manual welding backing layer and cover the filling process (hereinafter, Acronym argon electrical joint welding process), which is mostly double bevel type "U" shaped groove combination, multi-pass welding welding a single layer, in the form of a common electrical argon welding groove type joint welding process involved in Figure l , it shows a schematic view of a single layer multi-pass welding seam argon electrical joint welding processes in FIG.

通常,管道全位置自动焊机由焊接电源、电视监控系统、遥控器、 焊接机头、焊接轨道以及焊枪等六大部分组成。 Six most typically, by the welding pipes all position welding power supply, television monitoring system, remote control, welding head, the welding torch track and so on. 该焊机电源是一种脉冲逆变电源,具有弧长自动控制、实时监控、焊枪横摆控制、叠加高频脉冲等功能。 The welding power supply is a pulsed power inverter, has an arc length control automatic, real-time monitoring, the welding gun control yaw, superimposing high-frequency pulse and so on. 脉冲TIG自动焊可调工艺参数多,能够精确地控制焊接热输入以及熔池的形状和尺寸,可以用较低的热输入获得较大的熔深,从而减小了焊接热影响区和焊件变形。 Tunable pulsed TIG automatic welding process many parameters can be accurately controlled heat input and weld pool size and shape can be obtained with a lower penetration large heat input, thereby reducing the weld heat affected zone and weld pieces deformation. 在焊接过程中,脉冲电流对点状熔池有较强的搅拌作用,而且熔池金属冷凝快,高温停留时间短,焊缝金属组织细密。 In the welding process, the pulse current has to point the bath a strong stirring action and quickly condensed metal bath, high temperature short residence time, fine weld metal. 该种设备提供管道焊接的基本功能,给定的参数可调节范 This kind of equipment provides basic functions of a pipe welding, the given parameter adjustment range

围大,在焊接管道时需要根据工艺要求,根据焊接管道的母材的尺寸、 坡口型式和尺寸等因素选择所需要的焊接工艺参数。 Wai large, need to process requirements, selecting the desired welding parameters depending on the size of the base material welded pipes, groove type and size pipe welding and other factors.

对于大厚壁管道的焊接来说,对于常用的如图l所示的坡口,采用上述管道全位置自动焊机的氩电联合焊接工艺存在以下缺点: The welding of a large thick-walled pipe, for the conventional groove as shown in FIG. L, the following drawbacks argon electrical joint welding process above all position welding of pipes:

1. 氩电联合焊接工艺的坡口宽,焊接熔敷金属的填充量大,焊接消耗材料量是窄间隙自动焊工艺的坡口的4〜5倍; 1. Argon electrical joint groove width of the welding process, the weld filler metal deposited amount, the welding is 4 to 5 times the amount of material consumed narrow gap automatic welding process groove;

2. 氩电联合焊接工艺的坡口宽,焊接熔敷金属的填充量大,焊接周期相对较长。 2. Argon electrical joint groove width of the welding process, the weld deposit large filler metal, the welding cycle is relatively long.

3. 氩电联合焊接工艺的坡口的型式和尺寸决定了在进行焊接时, 3. Argon electric groove joint welding process determines the type and size during welding,

采用单层多道焊进行焊接。 A single-layer multi-pass welding for welding. 《咖s 'S coffee

为了克服现有的大厚壁管道氩电联合焊接工艺坡口所存在的缺点, 提出一种能够提髙焊接效率、减少填充消耗材料量的大厚壁管道窄间隙钨极惰性气体保护全位置自动焊接方法。 In order to overcome the existing disadvantages of large electrical argon thick pipe joint welding process groove is present, to provide a welding Gao possible to improve efficiency and reduce the amount of consumption of the filling material is large thick pipe narrow gap Tungsten Inert Gas all position Welding method. 为此,本发明的利用现有的上述全自动焊接设备提供的功能,开发出一种适合大厚壁管道焊接的坡口型式以及焊接该种坡口管道的特定范围的焊接工艺参数。 Welding parameters for this particular range, the present invention features the use of the above-described conventional automatic welding equipment provided, the development of large groove pattern suitable pipe welding and welding thick kind of the duct groove. 该方法开发的大厚壁管道焊接的坡口型式可以实现单层单道窄间隙焊接,其坡口称为窄间隙坡口,其工艺简称为窄间隙自动焊工艺。 The method developed large thick pipe welding groove type single channel can be realized single narrow gap welding, the groove is referred to as the narrow gap groove, which process is referred to as an automatic narrow gap welding process.

在本发明提出的大厚壁管道窄间隙钨极惰性气体保护全位置自动 In the present invention proposes a narrow thick pipe large gap tungsten inert gas all position

焊接方法中,管道的直径》325咖,管道的壁厚^40mm,包括步骤:使所述管道母材的相对端部形成焊前组合坡口,所述组合坡口包括上坡口和下坡口,上坡口由上坡口角度p限定,下坡口包括由下坡口角度a限定的下钝边和从下钝边的底部突出的根部钝边,其中下坡口角度a大于上部坡口角度P,上钝边与下钝边相交,其中根部钝边高度Hl的范围为 Welding methods, coffee 325, the wall thickness of the pipe diameter pipe "^ 40mm, comprising steps of: opposing ends of the conduit forming the base material composition before welding groove, said groove comprising a combination of uphill and downhill port port, port uphill angle p defined by the port uphill, downhill slope by the opening angle of the mouth comprising a blunt edge defined at the bottom and root blunt blunt edge protrudes from the lower edge, wherein the angle a is larger than the upper opening downhill slope Included angle P, with the blunt edge on blunt edge intersect, wherein the height of the root face root is in the range of Hl

1.0mm〜4mm,根部钝边宽度Wl的范围为1.5 mm〜4 mm,上坡口的顶部宽度W的范围为18mm〜24mm,下坡口角度a的范围为20°〜60°; 上坡口角度P的范围为4°〜10°;下坡口高度H2的范围为8mm〜25mm, 组对间隙G的范围为(M.Omm ;管道内部镗口宽度W2范围:20mm〜 60mm;其中,所述焊接方法还包括步骤:对根部钝边和下钝边的底部进行打底焊接,对下钝边和上坡口进行填充焊接,所述填充焊接为单层单道焊,以及对上坡口的顶部进行盖面焊接。 1.0mm~4mm, the scope of the root is the root face width Wl of 1.5 mm~4 mm, range uphill top opening width W is 18mm~24mm, a downhill included angle in the range of 20 ° ~60 °; uphill port P is the angle range 4 ° ~10 °; downhill opening height H2 in the range of 8mm~25mm, set the range of the gap G is (M.Omm; internal conduit bore opening width W2 range: 20mm~ 60mm; wherein the said welding method further comprising steps of: the root of the blunt edge and bottom edge of the backing blunt for welding, filling and welding of the uphill port blunt edge, welding the filler is a single layer single run, as well as port uphill welding a lid top face.

在上述方法中,在打底焊接的步骤中,设定焊接电源的电压基值范围为0V〜5V,电压峰值的范围为8.0V〜10V,电流基值的范围为80A〜 200A,电流峰值的范围为150A〜260A,焊丝的基值送丝速度为0〜15 inch/min,辉丝的峰值送丝速度为5〜20 inch/min,焊接的速度为2〜5 inch/min,焊丝直径范围为小0.8mm-小1.2mm。 In the above method, the step of rendering the welding, the welding power supply base value set voltage range of 0V~5V, peak voltage range of 8.0V~10V, range of the current value for the group 80A~ 200A, current peak range 150A~260A, welding wire feed speed base value of 0~15 inch / min, the peak luminance wire of the wire feed speed 5~20 inch / min, the welding speed of 2~5 inch / min, wire diameter range small small 0.8mm- 1.2mm.

在上述方法中,在填充焊接的步骤中,设定焊接电源的电压基值范围为0V〜5V,电压峰值的范围为9V〜12V,电流基值的范围为100A〜 300A,电流峰值的范围为180A〜380A,焊丝的基值送丝速度为0〜65 inch/min,焊丝的峰值送丝速度为20〜70 inch/min,焊接的速度为2〜6 inch/min,辉丝直径范围为* 0.8mm- * 1.2mm。 In the above method, the step of filling the welding, the welding power supply base value set voltage range of 0V~5V, peak voltage range of 9V~12V, range of the current value for the group 100A~ 300A, the scope of the current peak was 180A~380A, welding wire feed speed base value of 0~65 inch / min, welding wire feed speed peak 20~70 inch / min, the welding speed of 2~6 inch / min, a wire diameter range of luminance * 0.8mm- * 1.2mm.

优选的是,在形成焊前组合坡口的步骤中,根部钝边高度H1的范围为2mm〜3mm,根部钝边宽度Wl的范围为2mm〜3mm,上坡口的顶部宽度W的范围为18mm〜24mm,下坡口角度a的范围为20。 Preferably, the step of combining groove formed before welding, the scope of the blunt side of the root of the height H1 2mm~3mm, the range of the root of the root face width Wl 2mm~3mm, uphill range top opening width W of 18mm ~24mm, a downhill included angle in the range of 20. 〜40°; 上坡口角度卩的范围为6°〜8°;下坡口高度H2的范围为15mm〜25mm, 根部钝边过渡圆弧半径R范围:1.5mm〜3 mm,管材直径<p的范围为680 mm〜1000 mm、管材厚度范围H3为40mm〜100mm。 ~40 °; Jie uphill included angle in the range of 6 ° ~8 °; downhill opening height H2 in the range of 15mm~25mm, root circular arc radius R blunt edge transition range: 1.5mm~3 mm, diameter tubing <p in the range of 680 mm~1000 mm, the pipe thickness in the range of H3 40mm~100mm.

通过本发明的上述技术方案,相对于现有氩电联合焊接工艺技术, 具有以下优点: By the above-described aspect of the present invention, with respect to the prior art the argon electrical joint welding process, has the following advantages:

1. 窄间隙自动焊工艺的坡口窄,焊接熔敷金属的填充量小,焊接成本相对比较低。 Automatic welding narrow groove 1. Process narrow gap, filled with a small amount of the weld deposit, the welding cost is relatively low.

2. 窄间隙自动焊工艺的坡口可以实现单层单道焊。 2. Automatic narrow gap welding process may be implemented groove monolayer single run.

3. 窄间隙自动焊工艺焊接效率高,每道焊口的焊接周期相对短。 3. The high narrow gap welding efficiency automatic welding process, every weld welding cycle is relatively short. 通过图10A所示氩电联合焊接工艺焊接大厚壁管道的实际焊缝与 Argon actual weld joint electric welding processes large thick pipe as shown in FIG. 10A and

图IOB所示的本发明的实际焊缝之间对比,由此可更加直观地发现本发明所具有的上述优点。 FIG IOB comparison between the actual welds of the present invention is shown, whereby more intuitive found that the above advantages of the present invention has.

附图说明 BRIEF DESCRIPTION

图1是现有氩电联合焊接工艺焊接大厚壁管道焊接前坡口型式的示意图; 1 is a schematic front groove welding argon conventional type electrical joint welding processes large thick pipe;

图2是现有氩电联合焊接工艺焊接大厚壁管道的单层多焊道的示 FIG 2 is a conventional single layer multi-bead argon electrical joint welding processes a large thick-walled pipe

意图; intention;

图3是根据本发明窄间隙自动焊工艺焊接前坡口型式的示意图; 图4是根据本发明的窄间隙自动焊工艺焊接组合型坡口的尺寸截面视图; 3 is a schematic front slope automatic welding process of welding a narrow gap opening type according to the present invention; FIG. 4 is a cross-sectional view of the automatic welding process size-groove weld composition according to the present invention, the narrow gap;

图5是根据本发明焊缝的焊道结构的示意图; 图6是根据本发明的单层单道焊的示意图; FIG 5 is a diagram showing a configuration of the weld bead of the present invention; FIG. 6 is a schematic view of the present invention is a single layer of a single run;

图7是根据本发明的第一优选的实施例在不同的管道焊接位置5GT (管子轴线水平)的坡口结构的截面视图; 7 is a sectional view of a groove structure in the different positions of the pipe welding 5GT (horizontal axis of the pipe) according to a first preferred embodiment of the present invention;

图8是根据本发明的第二优选的实施例在管道焊接位置为5GT(管子轴线水平)坡口结构的截面视图; 8 is a sectional view of the groove structure according to a second preferred embodiment of the present invention, in a pipe welding position 5GT (horizontal axis of the pipe);

图9是根据本发明的第三优选实施例在管道焊接位置为5GT (管子轴线水平)的坡口结构的截面视图; FIG 9 is a cross-sectional view of 5GT (horizontal axis of the pipe) of the groove in the pipe structure according to a third preferred embodiment of the welding positions according to the invention;

图IOA和图10B分别是氩电联合焊接工艺焊接大厚壁管道的实际 FIGS. IOA and 10B are electrically argon actual joint welding processes a large thick-walled pipe

焊缝和本发明焊接的实际焊缝的图片。 The actual picture weld seam and welding of the present invention.

图11为焊缝截面尺寸W示意图。 FIG 11 is a schematic cross sectional dimension W weld.

具体实施方式 Detailed ways

下面结合附图和实施实例对本发明进一步说明。 The present invention is further described below in conjunction with the accompanying drawings and embodiment examples.

对于壁厚h在40mm以上的大直径厚管壁管道窄间隙全位置自动焊接,本发明是在传统的氩电联合焊接工艺焊接大厚壁管道坡口的基础上,通过反复的试验和改进,得到了适合大厚壁管道窄间隙自动焊工艺坡口型式和尺寸,如图3所示,通过与图1所示的传统的氩电联合焊接工艺焊接大厚壁管道的坡口相比,本发明提出的坡口宽度明显变窄了, 坡口的最大宽度减小为18〜24mm,同时坡口的结构形状也明显变化。 For all position welding the thickness h of the narrow wall thickness of the large diameter pipe above the gap 40mm, the present invention is the combination of traditional welding processes large thick pipe beveling electrical argon, through repeated trial and improvement, automatic welding processes to obtain a suitable type and size of the narrow groove thick wall pipe large gap, as shown, compared to a conventional argon through electrical welding processes joint bevel large thick pipe shown in FIG. 1, the present 3 the groove width was significantly narrowed the proposed invention, the maximum width of the groove is reduced to 18~24mm, while the shape of the groove structure has changed significantly.

图4显示了本发明的厚壁管道焊前的组合型坡口型式的具体尺寸的示意图。 Figure 4 shows a schematic view of a combination of specific size-groove type thick pipe before welding of the present invention. 两个待焊接厚壁母材管道的相对端部构成组合坡口,该组合坡口包括上坡口和下坡口,上坡口由上部坡口角度P限定,下坡口包括由下坡口角度a限定的下钝边和从下部钝边的底部突出的根部钝边,其中下坡口角度a大于上部坡口角度p,上钝边与下钝边相交,相对的两个根部钝边之间的间隙构成组对根部间隙G,并且在根部钝边的底部和 Opposite ends of the two pipes to be welded thick base material constituting the groove combination, which combination comprises a groove uphill and downhill port mouth, the mouth is defined by an upper uphill bevel angle P, comprising a downhill slope mouth opening the angle defined by a blunt edge at the bottom and root blunt protruding from a lower edge a blunt edge, wherein the angle a is larger than the upper opening downhill bevel angle p, blunt edge on blunt edge intersects the opposing two sides of the root of the blunt the gap between the groups constituted of root gap G, and the bottom at the root and root face

管道母材的内表面之间具有镗口。 Having a bore opening between the inner surface of the pipe base material. 本发明的组合坡口的形状和尺寸可通过下列参数确定:1)根部钝边高度H1范围:1.0mm〜4mm; 2)根部钝边宽度W1范围:1.5mm〜4mm; 3)上坡口的顶部宽度W范围: 18mm〜24mm; 4)下坡口角度a的范围:20°〜60° (单边10。〜30°); 上部坡口角度P的范围:4°〜10° (单边2。〜5。); 5)下坡口高度H2范围:8mm〜25mm; 6)根部钝边与下钝边的过渡连接圆弧半径R范围: 1.5〜3 mm; 7)管道直径<p范围325mm、管道厚度范围H3范围:40〜 100 mm; 8)管道组对根部间隙G的范围为(K1.0mm; 9)镗口宽度 The combination of the groove shape and size of the present invention can be determined by the following parameters: 1) the root of the root face height H1 range: 1.0mm~4mm; 2) the range of the width W1 of the root of the blunt edge: 1.5mm~4mm; 3) opening uphill top width W range: 18mm~24mm; 4) a downhill opening angle range: 20 ° ~60 ° (unilateral 10.~30 °); an upper bevel angle range of P: 4 ° ~10 ° (unilateral 2.~5); 5) opening height H2 downhill range:. 8mm~25mm; 6) connected to the root of the blunt edge to the transition range of the circular arc radius R of the root face: 1.5~3 mm; 7) pipe diameter <p range 325mm, the pipe thickness range H3 range: 40~ 100 mm; 8) of the tube set a range of root gap G (K1.0mm; 9) bore opening width

W2范围:20 mm〜60mm。 W2 range: 20 mm~60mm.

本发明在上述开发的组合坡口上,采用窄间隙自动焊工艺,开发出相匹配的焊接工艺参数,包括焊接电流、焊接电压、送丝速度和焊接速度。 In the compositions of the present invention developed above the groove, a narrow gap automatic welding process, developed to match the welding parameters, including the welding current, welding voltage, wire feed speed and the welding speed. 只有合适的焊接工艺参数以及与之匹配的坡口型式和尺寸才能完成单层单道的悍接。 Only suitable welding parameters and matching groove type and size to complete a single layer of a single channel contact defended.

图5示意性地显示了本发明的窄间隙自动焊工艺的基本工艺流程的各个部分,包括打底部分10 (包括点焊、焊接的第一层到第五层)、填充部分ll (打底层以上到填满坡口的焊道)和盖面部分12。 FIG 5 schematically shows the various parts of the basic process of automatic narrow gap welding process of the present invention, includes a backing portion 10 (a first layer to the fifth layer comprises a spot welding, soldering), LL filling portion (bonding layer above the groove to fill the bead) and the cover face portion 12.

下面对本发明的窄间隙自动焊工艺的内容进行描述: Next, content automatic narrow gap welding process of the present invention will be described:

第一,合理的工艺规范参数包括焊接电流(基值和峰值)、焊接电压(基值和峰值)、送丝速度(基值和峰值)、焊接速度(基值和峰值), 保护气体流量是一个可供选用的范围。 First, reasonable process parameters include welding current specifications (base peak value), welding voltage (base peak value), the wire feed speed (base peak value), the welding speed (base peak value), the protective gas flow rate is It is available in a range.

第二,合理的工艺规范参数需要根据打底(包括点焊、焊接的第一层到第五层)、填充(打底层以上到填满坡口的焊道)和盖面来分别设置,焊接过程中根据焊缝截面尺寸W和焊接侧壁实际熔合情况适当的调整焊接参数。 Second, the need for reasonable process parameters according to specifications (the first layer to the fifth layer comprises a spot welding, soldering) primer, filler (bonding layer over the groove to fill the bead) and the cover surface respectively disposed WELDING appropriate adjustments during welding the weld parameters according to the cross-sectional dimension W and the actual sidewall fusion welding situation. 在图11中示出了焊缝截面尺寸W。 In FIG 11 illustrates a cross-sectional size of the weld W.

在施焊过程中打底是要保证管道内表面成型以及侧壁良好的熔合, 焊接参数相对比较小。 In the welding process to ensure that the pipe is a backing surface of the molding and good sidewall fusion, welding parameters is relatively small. 填充时对能量的要求不是很严格,重要的是保证焊道之间没有未熔合以及焊缝里没有气孔、裂纹等缺陷。 The energy required when filling is not critical, it is important to ensure that there are no fusion between the weld bead and porosity there are no defects, such as cracks. 同时焊接参数的选择必须做到具有一定的效率。 Simultaneously selected welding parameters must be done with a certain efficiency. 对应于焊接参数,焊道每层的厚度可以从l.Omm增加到2.0mm。 Corresponding to the welding parameters, the thickness of each bead may be increased to 2.0mm from l.Omm. 根据这个要求,合理选择焊接工艺参数。 According to this requirement, a reasonable choice of welding parameters. 盖面可以采用线性焊道或摆动焊道进行焊接,合理的焊接参数主要是为了保证焊道成形美观,防止产生表面未熔合和咬边等缺陷的产生。 Cap surface may swing or linear weld bead welding, a reasonable welding parameters mainly to ensure the bead molding appearance, prevent the generation of surface and lack of fusion defects such as undercut.

在实际的焊接过程中根据焊缝截面宽度,再结合熔敷金属与侧壁熔合情况选择图6的单层单道方式进行焊接。 In the actual welding process according to the width of the weld cross-section, combined with the side walls fused welding metal case of selecting a single channel embodiment of FIG. 6 monolayers are welded. 焊接完成后焊缝外表面宽度保 After completion of the welding seam width of the outer surface of the protection

持在10〜13mm范围内的。 Held in 10~13mm range.

盖面部分12根据要求,可以釆用线性焊道或摆动焊道进行焊接。 Cover surface portion 12 as required, may preclude the linear welding bead or bead swing. 下面通过具体的实施例对本发明的窄间隙自动焊工艺进行具体的但不是限制性的描述: The following specific but non-limiting description of an automatic narrow gap welding process of the present invention through specific examples:

第一优选实施例 First preferred embodiment

以20# cp325x40的碳钢管道进行2GT和5GT两个焊接位置工艺试验,焊接材料选用H08Mn2Sicp1.0、焊接坡口型式选用图7所示的坡口型式和尺寸。 Carbon steel pipe 20 # cp325x40 be 2GT 5GT two welding positions and process test, welding material selection H08Mn2Sicp1.0, type bevel groove weld type and size selection shown in FIG. 7.

在进行该种金属管道的焊接时,管道焊接位置为2GT,焊接机头相对管道做圆周运动时,只有横焊位置。 When soldering the metal pipe, the pipe is 2GT welding position, the welding head relative to the pipe in a circular motion, only horizontal welding positions. 该位置的每道焊接工艺参数保持在一个固定的值,不会因为机头的转动而发生变化。 Each channel of the welding parameters is maintained at a fixed position value, it will not change the rotation of the handpiece. 当管道焊接位置为5GT时,焊接过程中位置比较复杂,因此焊接参数会因为焊枪位置不同而稍有变化,整个一圈管道焊接参数是一个动态变化的过程。 When the pipe is 5GT welding position, the welding process is complicated position, because of the different parameters of the welding torch position changes slightly, the whole circle of a pipe welding process parameters are dynamic.

管道的坡口尺寸和加工质量决定了焊接参数的大小,在打底焊接时, 焊接电流和焊接电压对坡口尺寸参数中的根部钝边髙度Hl、根部钝边宽度W1两个参数相对来说比较敏感。 Groove size and quality of pipeline processing determines the size of the welding parameters during the welding primer, welding current and voltage parameters of groove dimensions root of blunt edge on Hl Gao, the width W1 of the root of the blunt side opposite to the two parameters He said sensitive. 尤其是在进行点焊时,根部钝边高度H1对焊接电流具有影响。 Especially during spot welding, the root of the root face height H1 has an influence on the welding current.

表1列出了在图7坡口型式和尺寸中,具有不同的根部钝边髙度H1 的三个坡口实例,分别是坡口l、坡口2和坡口3。 Table 1 lists the groove 7 types and dimensions, there are three examples of different groove root of the blunt edge Gao H1, namely L groove, the groove 2 and the groove 3.

表l Table l

<table>complex table see original document page 11</column></row> <table><table>complex table see original document page 12</column></row> <table>在进行"坡口i"打底焊接时,由于根部钝边高度m尺寸相对偏小, 因此焊接电流和焊接电压参数相对较小,具体的焊接参数见表i一i。 <Table> complex table see original document page 11 </ column> </ row> <table> <table> complex table see original document page 12 </ column> </ row> <table> performed "Groove i" hit when the end of welding, the root since the blunt edge height dimension m is relatively small, thus welding current and voltage parameters is relatively small, specific welding parameters in Table i a i. in

进行填充和盖面时,焊接参数主要受焊缝截面尺寸W的影响;由于三 When filling and capping, weld welding parameters mainly influenced by the cross-sectional dimension W; as three

种坡口尺寸参数相同,因此焊接参数也基本相同。 The same kind of groove opening size parameters, the welding parameters are substantially identical. 坡口尺寸参数中钝边 Groove size parameter blunt edge

宽度wi将影响到焊缝截面尺寸w的大小,当根部钝边宽度wi在2 Width wi weld will affect the size of the cross-sectional size w, and when the roots in the root face width wi 2

到4mm增大,焊缝截面尺寸W也会增大,因此焊接参数中的焊接电流、 焊接电压也会增大。 4mm to increase, weld cross-sectional dimension W also increases, thus welding current parameters, the welding voltage increases.

在进行"坡口2"打底焊接时,由于根部钝边高度H1尺寸比较理想, 因此焊接电流和焊接电压参数相对"坡口l"的打底时的点焊参数增大, 同样在进行"坡口3"点焊时,焊接电流参数也会增大。 During the "groove 2" backing welding, since the root blunt edge height H1 of ideal size, thus welding current and voltage parameters relative "Groove L" bottoming spot welding parameter is increased, making the same. " groove 3 "spot welding, the welding current parameters increases. "坡口2"的嬋接工,参数见表1一2;"坡口3"的焊接工艺参数见表1一3。 "Groove 2" Chan bonding process, a 2 parameters in Table 1; "groove 3" in a welding process parameters in Table 1 3.

表l一l Table l a l

<table>complex table see original document page 12</column></row> <table> <Table> complex table see original document page 12 </ column> </ row> <table>

表1一2 Table 1 a 2

<table>complex table see original document page 13</column></row> <table>参数说明:下面是以焊接"坡口2"焊接参数说明,在进行点焊时的峰值电流为170A,基值电流为90A;此时的焊接电压峰值为8 V、焊接电压的基值在0〜5V范围内选择都可;焊接送丝速度的峰值可在5〜15 inch/min范围内选择、焊接送丝速度的基值可在0〜10范围内选择。 <Table> complex table see original document page 13 </ column> </ row> <table> Parameters: The following is welding "groove 2" Parameter Description welding, spot welding is performed at the peak current is 170A, the base value 9OA current; welding voltage peak value at this time is 8 V, the base value of the welding voltage can be selected within the range 0~5V; peak solder wire feed speed may be selected in / min range 5~15 inch, the welding wire feeder base value of the speed may be selected within the range of 0 ~ 10. 点焊完成后,在进行其他打底焊道焊接时为了保证坡口根部焊透以及焊缝截面尺寸W达到某个值时,焊接电流的峰值为260A,焊接电流的基值 After completion of the spot welding, is performed in order to ensure other back weld groove weld root penetration and a cross-sectional dimension W reaches a certain value during welding, the welding current is 260A peak, the base value of the welding current

为200A;在进行打底层焊接时,焊接电压参数主要受焊缝截面尺寸W 的影响,基本上都保持在9V〜11V范围内;焊接送丝速度峰值可在10〜 30inch/min、焊接送丝速度基值可在10〜25 inch/min范围内选择,焊接速度基本保持在4.0〜6.0 inch/min之间。 To 200A; underlying layer during welding, the welding parameters are mainly affected by the voltage-sectional dimension W of the weld, it is substantially maintained within the range 9V~11V; welding wire feed speed peak can / min, the welding wire feeding 10~ 30inch speed of the base value may be selected within 10~25 inch / min range, the welding speed is substantially maintained between 4.0~6.0 inch / min.

在进行焊道填充和盖面时,焊接电压基本保持在9〜11V范围内、焊接速度也是在一个固定的3〜5 inch/min范围变化;变化比较大的是焊接电流,电流的峰值也从210A〜380A这个区间变化,基值在180A〜280A 范围内变化。 When the bead filler and cover during the welding voltage remains substantially within the range 9~11V, the welding speed is in a fixed 3~5 inch / min variation range; relatively large changes in the peak welding current, but also from the current 210A~380A change this interval, a change in the base value 180A~280A range. 当焊接电流参数(峰值、基值)在一个区间发生变化时, 当焊接电流的峰值达到最大如380A时,焊接电流的基值也达到最大280A。 When the welding current parameters (peak, base) when a range change occurs, when the peak of the welding current reaches a maximum, such as 380A, the welding current base value has reached the maximum 280A. 焊接送丝速度(峰值/基值)根据焊缝熔敷金属量的多少,配合其它工艺参数可在40/30〜50/45inch/min之间做出适当的选择。 Welding wire feed speed (peak / base) deposited how much amount of the weld metal, other process parameters can be made with proper selection between 40 / 30~50 / 45inch / min.

在进行焊道盖面时,先选用线性焊道进行焊接,在达到规定的焊缝余高时,采用摆动焊道进行焊接。 Bead during capping, the choice of the linear first welding bead, when the predetermined high weld I, using the wobble welding bead.

通过对比表l一1、表1一2和表1—3,可以看出:打底焊接电流参数随着根部钝边高度Hl的不同而变化,而其余焊接工艺参数基本没有变化,可见根部钝边高度H1直接影响打底焊接电流的大小和范围。 By comparison of Table l a 1, a 2 in Table 1 and Table 1-3, it can be seen: the welding current parameters with different rendering blunt edge height Hl root varies, and the remaining unchanged welding parameters, visible root blunt edge height H1 backing welding current directly affect the size and scope.

不锈钢与碳钢焊接工艺参数的不同,主要与管道材质本身的焊接性能、所选的焊接材料的直径以及管道坡口尺寸的变化有关。 Different stainless steel and carbon steel welding process parameters, mainly related to weldability pipe material itself, and the diameter of the pipe groove dimensions selected solder material related to the change. 在坡口型式和尺寸、焊接材料的直径一定的情况下,整个管道的焊接工艺参数的变化是一个动态变化的过程,只有当焊接参数彼此相互匹配的情况下,才能焊接出高效髙质量的焊口。 In the groove type and size, certain of the diameter of the solder material, change welding parameters throughout the conduit is a dynamic process, and only when a case where matched welding parameters to each other, in order to weld the high Gao quality welding mouth.

上面三个坡口尺寸参数以坡口2尺寸参数为最佳。 The above three parameters of groove dimensions in the groove 2 of the best size parameter.

第二优选实施例 Second preferred embodiment

以不锈钢材料Z3CN20-09M (p840x75的管道进行焊接工艺试验,焊 In stainless steel Z3CN20-09M (p840x75 pipe welding process carried out tests, welding

接材料选用ER3i6LSi (或ER316L) q>0.8、 1.0,坡口尺寸和型式如图8所示。 Bonding material selection ER3i6LSi (or ER316L) q> 0.8, 1.0, groove size and type as shown in FIG.

表2列出了窄间隙全位置自动焊焊接工艺焊接9840x75不锈钢大厚壁管道的主要规范参数。 Table 2 lists the main specifications of all position welding parameters of the welding process large stainless steel thick pipe 9840x75 narrow gap.

参数说明:在进行打底层焊接时,首先进行的是点焊,此时选择的焊接参数相对较小,只要能够保证两段管道固定在一起。 Parameters: bonding layer during welding, spot welding is carried out first, then the selected welding parameters is relatively small, as long as the two sections to ensure that the pipe together. 点焊时的焊接参数为:峰值电流为160A、基值电流为80A;此时的焊接峰值电压为为8.5V、基值电压为可以为0〜5V范围内选择;焊接送丝速度的峰值为可在5〜20 inch /min范围内选择、焊接送丝速度的基值可以在0〜 10inch/min范围内选择、此时的焊接速度为3.5inch/min。 Spot welding the welding parameters are: the peak current of 160A, a base current is 8OA; peak voltage at this time is the welding of 8.5V, the value of the base voltage may be selected within the range 0~5V; peak for the welding wire feed speed can be selected within / min range 5~20 inch, welding wire feed speed value is selected from the group 0~ 10inch / min range, the welding speed at this time was 3.5inch / min. 对于保护气体的流量正面在60〜70 L/min,背面保护保护气体流量可在5〜30 L/min范围选择,保护气体的流量与保护效果有关。 For positive flow of protective gas may be in / min in the range of 5~30 L selected 60~70 L / min, backside protection gas flow protection, and protection of the protective effect of the gas flow concerned.

随着焊道层数的增加,焊接截面尺寸(W)不断增大,为了保证侧壁良好的熔合,则在焊接过程中需要增加基值和峰值的电流和电压。 With the increase of the number of layers of the bead, the welding cross sectional dimension (W) increasing, in order to ensure a good sidewall fusion, during the welding process the need to increase the base value and the current and voltage peaks. 当焊接到第五层时,焊接参数为:焊接电流的峰值达到220A、焊接电流的基值为130A;焊接电压的峰值达到IOV、焊接电压的基值可在0〜5V 范围内选择;送丝速度的峰值为30inch/min、基值为25 inch/min;焊接速度4.5 inch/min0 When welded to the fifth layer, the welding parameters: welding current reaches the peak 220A, the welding current is 130A-yl; welding voltage reaches the peak IOV, the base value of the welding voltage may be selected within a range 0~5V; wire feeding peak velocity of 30inch / min, the base is 25 inch / min; welding speed of 4.5 inch / min0

对于基值范围80A〜130A中间值105A则是根据焊峰截面尺寸(W) 的情况通过试验确定的;峰值电流范围160A〜220A中间值190A也是在焊接过程中根据焊接截面尺寸(W)的情况而确定的。 For intermediate values ​​80A~130A yl range 105A is determined according to the situation by the test solder peak sectional dimension (W); a peak value of the intermediate current range 160A~220A 190A is welded in the welding process according to the cross-sectional dimension (W) of the case It determined.

同样在进行焊缝填充和盖面的时候,为了保证侧壁良好熔合,根据焊缝金属熔池与侧壁的熔合情况,适当的调整焊接工艺参数。 Also during the weld filler surface and the cap when the side wall in order to ensure good fusion The fusion weld metal pool and the case side wall, suitable to adjust the welding parameters. <table>complex table see original document page 16</column></row> <table> <Table> complex table see original document page 16 </ column> </ row> <table>

同样在进行焊缝填充和盖面的时候,为了保证側壁良好熔合,根据焊缝金属熔池与侧壁的熔合情况,适当的调整焊接工艺参数。 Also during the weld filler surface and the cap when the side wall in order to ensure good fusion The fusion weld metal pool and the case side wall, suitable to adjust the welding parameters.

在刚开始进行焊道填充时由于焊缝截面尺寸w相对比较小所以采用 Performed at the beginning of the weld bead filled cross-sectional dimension is relatively small so the use of w

的峰值电流为220^随着焊缝厚度的增加,焊焊缝截面尺寸的变宽,为了保证侧壁良好的熔合焊接电流峰值达到最大值360A;对于嬋接电流的基值130A〜270A则也是根据焊缝截面尺寸W和侧壁熔合情况作出适当的调整。 220 ^ peak current increases as the thickness of the weld, the weld wider cross-sectional dimension of the welding, in order to ensure good fusion welding sidewall 360A peak current reaches a maximum value; 130A~270A base value for the current is also connected to Chan to make suitable adjustments to the weld fusion sectional dimension W and the case sidewall.

在进行焊道盖面时,由于焊接应力引起管道的轴向收縮变形,焊缝 Bead surface carrying the lid, since the welding contraction stress caused by axial deformation of the pipe, weld

截面尺寸不断变化的过程,所以焊接参数也有一个变化的范围。 Sectional dimension changing process, the welding parameters have a range of variation.

在管道从打底到盖面的焊接过程中,焊接电流、电压、送丝速度、 焊机行走速度只有相互匹配,才能够保证焊道的质量。 In the pipe from the backing to the surface of the cap welding process, the welding current, voltage, wire feed speed, welding travel speed only matched, to ensure the quality of the weld bead.

第三优选实施例: Third preferred embodiment:

以不锈钢材料Z3CN20-09M cp938xl00的管道进行焊接工艺试验,焊接材料选用ER316LSi (或ER316L) q>0.8、 1.0,坡口尺寸和型式如图9 所示。 In Z3CN20-09M cp938xl00 stainless steel pipe welding process test, welding material selection ER316LSi (or ER316L) q> 0.8, 1.0, groove size and type as shown in FIG. 具体的焊接参数见表3。 Specific welding parameters in Table 3. 由于参数说明与第一或者第二优选实施例类似,在此不用进行详细描述。 Since the parameter description similar to the first embodiment or the second preferred embodiment, not described in detail herein.

表3 table 3

<table>complex table see original document page 17</column></row> <table> <Table> complex table see original document page 17 </ column> </ row> <table>

接材料所得到的相应的焊接工艺参数。 Of welding process parameters corresponding to the obtained material. 在本发明的保护范围内,本发明技术领域的普通技术人员在此基础上可以对上述实施例在细节上作了许多变形、变化以及改进。 Within the scope of the present invention, the art of the present invention can be made of ordinary skill in the art on the basis of the embodiments described above in detail many modifications, variations and improvements.

Claims (11)

1、 一种用于大厚壁管道钨极惰性气体保护全位置自动焊接方法,所述管道的直径((p)》325mm,壁厚(H3)》40mm,包括步骤:使所述管道母材的相对端部形成焊前组合坡口,所述组合坡口包括上坡口和下坡口,上坡口由上坡口角度(p)限定,下坡口包括由下坡口角度(cO限定的下钝边和从下钝边的底部突出的根部钝边,其中下坡口角度(a)大于上部坡口角度(P),上钝边与下钝边相交,其中根部钝边高度(Hl)的范围为1.0mm〜4mm,根部钝边宽度(Wl)的范围为1.5mm〜4mm,上坡口的顶部宽度(W)的范围为18mm〜24mm, 下坡口角度(a)的范围为20°〜60°;上坡口角度(P)的范围为4°〜10°; 下坡口高度(H2)的范围为8mm〜25mm;组对间隙(G)的范围为Ol.Omm ;管道内部镗口宽度(W2)范围为20mm〜60mm,其中,所述焊接方法还包括步骤:对根部钝边和下钝边的底部进行打底焊接;对下钝 A large thick pipe tungsten inert gas for protecting all position welding method, the diameter of the conduit ((p) "325mm, wall thickness (H3)" 40mm, comprising the steps of: causing the base material conduit the opposite end portion is formed composition before welding groove, said groove comprising a combination of uphill and downhill mouth opening, defined by the uphill uphill port opening angle (P), comprising a downhill slope mouth opening angle (defined cO the blunt edge and the blunt edge projecting from the bottom of the root of the blunt edge, wherein the opening angle of slope (a) is greater than the upper bevel angle (P), the blunt edge on blunt edge intersect at which the height of the root of the root face (on Hl ) ranges 1.0mm~4mm, blunt range root side width (Wl of the) is 1.5mm~4mm, the range of the width of the top opening of the ascending (W) is 18mm~24mm, downhill included angle range (a) is 20 ° ~60 °; uphill opening angle range (P) is 4 ° ~10 °; range port downhill height (H2) is 8mm~25mm; range set gap (G) is Ol.Omm; conduit internal bore opening width (W2) ranges 20mm~60mm, wherein said welding method further comprising steps of: at the bottom of the root of the blunt edge and blunt edge is welded backing; next obtuse 和上坡口进行多层填充焊接,每层填充焊接为单道焊;以及对上坡口的顶部进行盖面焊接,盖面焊接采用线性焊道或摆动焊道。 And a multilayer filling port uphill weld, each filled with a single pass welding weld; and a top surface of a lid opening uphill welding, the welding surface of the lid linear bead or bead swing.
2、 根据权利要求1所述的方法,其特征在于,在打底焊接的步骤中,设定焊接电器的电压基值范围为0V〜5V,电压峰值的范围为8.0V〜10V,电流基值的范围为80A〜200A,电流峰值的范围为150A〜 260A,焊丝的基值送丝速度为0〜15inch/min,焊丝的峰值送丝速度为5〜20 inch/min,焊接的速度为2〜5 inch/min,焊丝直径范围为cp0.8mm-cp 1.2mm。 2. The method according to claim 1, wherein, in the step of rendering the welding, the base value of the welding voltage set in the range of electrical 0V~5V, peak voltage range of 8.0V~10V, the base current value It ranges 80A~200A, the range of the current peak was 150A~ 260A, welding wire feed speed base value of 0~15inch / min, welding wire feed speed peak 5~20 inch / min, the welding speed of 2 ~ 5 inch / min, wire diameter in the range of cp0.8mm-cp 1.2mm.
3、 根据权利要求1所述的方法,其特征在于,在填充焊接的步骤中,设定焊接电器的电压基值范围为0V〜5V,电压峰值的范围为9V〜12V,电流基值的范围为100A〜300A,电流峰值的范围为180A〜 380A,焊丝的基值送丝速度为0〜65inch/min,焊丝的峰值送丝速度为20〜70 inch/min,焊接的速度为2〜6 inch/min,焊丝直径范围为cp0.8mm-(pl.2mm。 3. The method according to claim 1, wherein, in the step of filling the welding, the base value of the welding voltage set in the range of electrical 0V~5V, peak voltage range of 9V~12V, range of the current value of the group is 100A~300A, the range of the current peak was 180A~ 380A, welding wire feed speed base value of 0~65inch / min, welding wire feed speed peak 20~70 inch / min, the welding speed of 2~6 inch / min, wire diameter ranges cp0.8mm- (pl.2mm.
4、 根据权利要求1所述的方法,其特征在于,在盖面焊接的步骤中,设定焊接电器的电压基值范围为0V〜5V,电压峰值的范围为9V〜12V,电流基值的范围为100A〜240A,电流峰值的范围为160A〜 280A,焊丝的基值送丝速度为0〜55inch/min,焊丝的峰值送丝速度为15〜60 inch/min,焊接的速度为3〜5 inch/min,焊丝直径范围为cp0.8mm-(pl.2mm。 4. The method of claim 1, wherein, in the step of welding surface of the lid, the base value of the welding voltage set in the range of electrical 0V~5V, peak voltage range of 9V~12V, the current value of the group range 100A~240A, the range of the current peak was 160A~ 280A, welding wire feed speed base value of 0~55inch / min, welding wire feed speed peak 15~60 inch / min, the welding speed is 3 to 5 inch / min, wire diameter ranges cp0.8mm- (pl.2mm.
5、 根据权利要求1所述的方法,其特征在于,在形成焊前组合坡口的步骤中,根部钝边高度(Hl)的范围为2mm〜3mm,根部钝边宽度(Wl)的范围为2mm〜3mm,上坡口的顶部宽度(W)的范围为18mm〜24mm,下坡口角度(a)的范围为20°〜40°;上坡口角度(卩) 的范围为6°〜8°;下坡口高度(H2)的范围为15mm〜25mm,根部钝边过渡圆弧半径(R)范围:1.5mm〜3 mm,管材直径(cp)的范围为680 mm〜1000mm、管材厚度范围(H3)为40mm〜100mm。 5. The method of claim 1, wherein, in the step of forming a combination of groove before welding, the range of the height of the root of the root face (on Hl) is 2mm~3mm, blunt range root side width (Wl of the) of 2mm~3mm, a top width range uphill opening (W) is 18mm~24mm, downhill included angle range (a) of 20 ° ~40 °; uphill opening angle range (Jie) is 6 ° ~8 [deg.]; range port downhill height (H2) is 15mm~25mm, blunt edge transition arc root radius (R) range: 1.5mm~3 mm, the pipe diameter range (cp) to 680 mm~1000mm, pipe thickness range (H3) of 40mm~100mm.
6、 根据权利要求5所述的方法,其特征在于,在打底焊接的步骤中,设定焊接电器的电压基值范围为0V〜3V,电压峰值的范围为8.5V〜10V,电流基值的范围为80A〜160A,电流峰值的范围为160A〜 240A,焊丝的基值送丝速度为0〜15inch/min,焊丝的峰值送丝速度为5〜20 inch/min,悍接的速度为3〜5 inch/min,焊丝直径范围为(J>0.8mm-<1> 1.2mm。 6. The method according to claim 5, wherein, in the step of rendering the welding, the base value of the welding voltage set in the range of electrical 0V~3V, peak voltage range of 8.5V~10V, the base current value ranges 80A~160A, the range of the current peak was 160A~ 240A, welding wire feed speed base value of 0~15inch / min, welding wire feed speed peak 5~20 inch / min, then the rate of 3 defended ~5 inch / min, wire diameter in the range of (J> 0.8mm- <1> 1.2mm.
7. 根据权利要求5所述的方法,其特征在于,在填充焊接的步骤中,设定焊接电器的电压基值范围为0V〜3V,电压峰值的范围为9.5V〜 10.5V,电流基值的范围为100A〜240A,电流峰值的范围为180A〜 340A,焊丝的基值送丝速度为30〜65 inch/min,焊丝的峰值送丝速度为35〜70 inch/min,焊接的速度为3〜6 inch/min,焊丝直径范围为<J> 0.8mm- 4> 1.2mm。 7. The method as claimed in claim 5, wherein, in the step of filling the welding, the base value of the welding voltage set in the range of electrical 0V~3V, peak voltage range of 9.5V~ 10.5V, the base current value ranges 100A~240A, the range of the current peak was 180A~ 340A, welding wire feed speed base value is 30~65 inch / min, welding wire feed speed peak 35~70 inch / min, the welding speed of 3 ~6 inch / min, wire diameter in the range of <J> 0.8mm- 4> 1.2mm.
8. 根据权利要求5所述的方法,其特征在于,在盖面焊接的步骤中,设定焊接电器的电压基值范围为0V〜3V,电压峰值的范围为10V〜12V,电流基值的范围为110A〜220A,电流峰值的范围为170A〜 240A,焊丝的基值送丝速度为0〜45inch/min,焊丝的峰值送丝速度为10〜50 inch/min,焊接的速度为3〜6 inch/min,焊丝直径范围为4> 0.8mm- <1> L2mm。 8. The method as claimed in claim 5, wherein, in the step of welding surface of the lid, the base value of the welding voltage set in the range of electrical 0V~3V, peak voltage range of 10V~12V, the current value of the group range 110A~220A, the range of the current peak was 170A~ 240A, welding wire feed speed base value of 0~45inch / min, welding wire feed speed peak 10~50 inch / min, the welding speed is 3 ~ 6 inch / min, wire diameter in the range of 4> 0.8mm- <1> L2mm.
9. 根据权利要求l一8之一所述的方法,其特征在于,所述管道的材料为下列材料中的一个:不锈钢、碳钢、合金钢,以及焊接的保护气体为下列气体中的一个:氩气、氦气或氩气和氦气的混合惰性气体。 9. l of one of a method according to claim 8, characterized in that the material of the pipe is one of the following materials: stainless steel, carbon steel, alloy steel, and the arc welding is gas following a : argon, helium or a mixture of inert gas such as argon and helium.
10. 根据权利要求1一8之一所述的方法,其特征在于,所述管道的材料为不锈钢以及所述保护气体为氩气。 10. The method according to one of claims 1 a 8, wherein the material is a stainless steel pipe and the protective gas is argon.
11. 一种利用如权利要求1 一10之一所述的焊接方法制造的管道, 其特征在于,焊缝的外表面的宽度为10—13mm。 A use as claimed in claim 1 welding method according to one of a conduit 10 made, characterized in that the width of the outer surface of the weld is 10-13mm.
CN 200610121459 2006-08-25 2006-08-25 Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method CN100450692C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200610121459 CN100450692C (en) 2006-08-25 2006-08-25 Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200610121459 CN100450692C (en) 2006-08-25 2006-08-25 Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method

Publications (2)

Publication Number Publication Date
CN101077547A CN101077547A (en) 2007-11-28
CN100450692C true CN100450692C (en) 2009-01-14

Family

ID=38905302

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200610121459 CN100450692C (en) 2006-08-25 2006-08-25 Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method

Country Status (1)

Country Link
CN (1) CN100450692C (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101417364B (en) 2008-11-20 2011-11-30 新疆石油工程建设有限责任公司 Metal cored wire conduit root welding method semiautomatic
CN101758335B (en) 2009-10-21 2012-02-01 上海锅炉厂有限公司 An improved mechanical dissimilar steel welded butt joints groove
JP5319595B2 (en) * 2010-04-09 2013-10-16 株式会社東芝 MAG welding shield gas, MAG welding method, and welded structure
CN101905385A (en) * 2010-08-04 2010-12-08 江苏申港锅炉有限公司 Butting groove structure of stainless steel tube
CN101972885B (en) * 2010-09-16 2012-07-04 山西北方风雷工业集团有限公司 Bushing-free narrow-gap pulse gas metal arc backing welding method of petroleum kelly bar
CN102655294B (en) * 2011-03-02 2015-09-23 上海莫仕连接器有限公司 Electric connector and manufacture method thereof
CN102653022B (en) * 2012-05-16 2015-06-17 中国核工业二三建设有限公司 Method for welding narrow-gap butt-joint connector of pipeline with large pipe diameter and thick wall
CN103862197A (en) * 2012-12-13 2014-06-18 中国核动力研究设计院 Welding materials and welding method for main pipe narrow gap automatic welding
CN103862187A (en) * 2012-12-13 2014-06-18 中国核动力研究设计院 Welding groove structure for main pipe narrow gap automatic welding
CN103394796B (en) * 2013-06-27 2016-01-20 中广核工程有限公司 The Narrow sloping-glot of steel containment vessel of nuclear power station and automatic soldering method thereof
CN104002028B (en) * 2014-05-13 2015-09-16 江苏科技大学 A kind of welding method of rocking arc narrow clearance one side welding with back formation
CN104759797B (en) * 2015-04-14 2016-09-28 攀钢集团工程技术有限公司 Thick member crack forming mechanism combination type groove and combination type groove renovation technique
CN106425018B (en) * 2015-08-12 2019-08-02 中国石油天然气股份有限公司 The welding method of LNG low-temperature storage tank 9%Ni steel docking welding bead
CN105149744A (en) * 2015-09-25 2015-12-16 中国核工业二三建设有限公司 Method for welding butt joint of large thick wall pipelines in nuclear power station
CN105458476B (en) * 2015-12-30 2018-10-16 中国核工业二三建设有限公司 The welding method of nuclear island of nuclear power station main steam or main feed water pipe road
CN105537738B (en) * 2016-01-11 2019-11-22 中国核工业二三建设有限公司 The welding method of nuclear power station large posted sides part banjo fixing butt jointing
CN105522260A (en) * 2016-02-03 2016-04-27 江苏电力装备有限公司 Narrow-gap argon arc automatic welding method of thick-wall pipes
CN105522259A (en) * 2016-02-03 2016-04-27 江苏电力装备有限公司 Narrow-gap argon arc automatic welding and union melt welding combined welding method of thick-wall pipes
CN105750708B (en) * 2016-04-29 2018-04-06 东方电气集团东方锅炉股份有限公司 A kind of heavy wall nickel-base alloy header welding method of girth weld
CN105855673A (en) * 2016-05-30 2016-08-17 吉林昊宇电气股份有限公司 Thick-wall steel pipe mixed type groove structure and matched welding tip thereof
CN106181104B (en) * 2016-08-30 2018-06-19 渤海石油装备福建钢管有限公司 A kind of new-type welding groove of large-scale steel pipe
CN106425291A (en) * 2016-08-31 2017-02-22 浙江西子联合工程有限公司 Demineralized water tank for high-temperature condensate water and manufacturing method thereof
CN106475666B (en) * 2016-11-17 2019-03-26 中国华冶科工集团有限公司 Pipeline narrow gap vertical downward TIG weld method
CN107824937A (en) * 2017-11-13 2018-03-23 南京奥特电气股份有限公司 A kind of automatic bottoming welding technique of the narrow groove of thick-walled pipe and welding head
CN108015390A (en) * 2017-12-13 2018-05-11 中广核工程有限公司 Steel containment vessel of nuclear power station automatic soldering method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278074B1 (en) 2000-02-28 2001-08-21 Lincoln Global, Inc. Method and system for welding railroad rails
CN1569378A (en) 2004-04-23 2005-01-26 沪东重机股份有限公司 Angular end-to-end welding method for super long and thick steel plates
CN2758002Y (en) 2004-09-20 2006-02-15 四川石油管理局 Composite welding edge beveling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278074B1 (en) 2000-02-28 2001-08-21 Lincoln Global, Inc. Method and system for welding railroad rails
CN1569378A (en) 2004-04-23 2005-01-26 沪东重机股份有限公司 Angular end-to-end welding method for super long and thick steel plates
CN2758002Y (en) 2004-09-20 2006-02-15 四川石油管理局 Composite welding edge beveling

Also Published As

Publication number Publication date
CN101077547A (en) 2007-11-28

Similar Documents

Publication Publication Date Title
CN1038913C (en) Method for jointing metal parts by arc welding
EP1800790B1 (en) Process of starting a hybrid laser welding process for welding of coated metal sheets with a backward and forward motion of the laser beam for evaporating the coating
US2813190A (en) Multiple arc welding
US20030136774A1 (en) Straight polarity metal cored wire
AU736892B2 (en) Method of pipe welding
AU729563B2 (en) Short circuit welder
CN100351031C (en) Electric arc pulse welder with short circuit control
CN100491044C (en) Large caliber aluminium alloy pipeline non-pad tungsten electrode argon arc single face welding and double face shaping method
CN101116925B (en) Twin wire arc welding method, and to the multi-layer welding method, and a method of welding a narrow break
DeRuntz Assessing the benefits of surface tension transfer welding to industry
AU1735499A (en) Welding wire and method of making same
US6855913B2 (en) Flux-cored wire formulation for welding
US6835913B2 (en) Hardsurfacing welding wire and process
CN1894070A (en) Welding unit and welding method by means of which at least two different welding processes may be combined
JP2011125928A (en) Laser welding method for steel sheet
CA1144092A (en) Thick welded steel pipe of large diameter and production thereof
CN100579703C (en) Narrow interstice TIG automatic welding technique for titanium alloy thick plate
CN101653855A (en) Method for welding composited tube at bonding interface of carbon steel/stainless steel machinery
US8613139B2 (en) Manufacture of a portion of a metal part using the MIG method with pulsed current and wire
CN100551603C (en) Consumable electrode surfacing method of electromagnetic complex field, and the device and extended application thereof
NZ547868A (en) Tig welding or braze-welding with metal transfer via a liquid bridge
CN101421069A (en) Metal cored electrode for open root pass welding
US2191471A (en) Welding method
US20070170163A1 (en) Synergistic welding system
CN102225494B (en) Laser-arc hybrid welding double-wide narrow-groove welding method

Legal Events

Date Code Title Description
C06 Publication
C10 Request of examination as to substance
C14 Granted
C56 Change in the name or address of the patentee

Owner name: CHINA NUCLEAR INDUSTRY 23 CONSTRUCTION CO, LTD.

Free format text: FORMER NAME: CHINA NUCLEAR INDUSTRY 23 CONSTRUCTION CORPORATION