CN106735767B - The semi-automatic heated filament argon arc welding technique of pipe and attachment in boiler heating surface piping - Google Patents

The semi-automatic heated filament argon arc welding technique of pipe and attachment in boiler heating surface piping Download PDF

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Publication number
CN106735767B
CN106735767B CN201710079673.4A CN201710079673A CN106735767B CN 106735767 B CN106735767 B CN 106735767B CN 201710079673 A CN201710079673 A CN 201710079673A CN 106735767 B CN106735767 B CN 106735767B
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CN
China
Prior art keywords
welding
semi
heated filament
arc welding
pipe
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CN201710079673.4A
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Chinese (zh)
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CN106735767A (en
Inventor
卢征然
李忠杰
杨惠勤
曲生志
李路阳
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上海锅炉厂有限公司
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Priority to CN201710079673.4A priority Critical patent/CN106735767B/en
Publication of CN106735767A publication Critical patent/CN106735767A/en
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Publication of CN106735767B publication Critical patent/CN106735767B/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas
    • B23K9/167Arc welding or cutting making use of shielding gas and of a non-consumable electrode
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/38Selection of media, e.g. special atmospheres for surrounding the working area
    • B23K35/383Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/235Preliminary treatment

Abstract

The invention discloses the semi-automatic heated filament argon arc welding techniques of pipe in a kind of boiler heating surface piping and attachment, select plate-like welding wire according to the wall thickness of pipe;Selection can be with argon arc welding power source, heater supply, the matched semi-automatic heated filament argon-arc welding gun of automatic wire feeder;Adjust tungsten electrode extension elongation and the distance between tungsten electrode and welding wire;Pipe is welded with attachment fillet weld using semi-automatic heated filament argon arc welding in boiler heating surface piping;In welding process, the size of wire feed rate can be adjusted in real time by the wire feed trim button in semi-automatic heated filament argon-arc welding gun hand handle.The present invention solves welding quality and welding efficiency is difficult to the technical problem taken into account, and provides a kind of pair welder's skill requirement is lower, welder is easier to operate to, better efficient, the reliable welding procedure of craftsmanship and welding quality.

Description

The semi-automatic heated filament argon arc welding technique of pipe and attachment in boiler heating surface piping
Technical field
The present invention relates to the semi-automatic heated filament argon arc welding techniques of pipe in a kind of boiler heating surface piping and attachment, belong to weldering Connection technology field.
Background technique
Boiler heating surface piping is one of important component of boiler, and not only material is complicated, specification is more, welding capacity for tube part It greatly, and is operating temperature highest, the highest-ranking pressure element of material.With the continuous promotion of manufacturing process technology, boiler Pipe and docking for pipe in heating surface piping is substantially all using machine automatization weldering, and postwelding weld bond can pass through the lossless inspection of RT Survey, therefore the welding quality of pipe and tube butt welding mouth has been greatly improved in boiler heating surface piping, but boiler by The fillet weld seam of pipe and attachment is all welded using Manual electric welding item substantially both at home and abroad at present in hot facial canal system, welding quality It is difficult to reliably be guaranteed, boiler heating surface piping attachment fillet weld is in manufacture, installation and operational process because of fillet weld quality The non-the case where of stopping such as problem causes large area to reprocess and leak, booster, happen occasionally, and have seriously affected the safety of boiler.
Need a lot with the attachment quantity of tube welding in boiler heating surface piping, the material of attachment, type are also more, at present It is also difficult to realize automatic welding, pipe and attachment fillet weld seam matter in boiler heating surface piping can solve using manual argon arc welding Amount is difficult to the problem of reliably being guaranteed, but common manual argon arc welding can not achieve automatic feeding and can only be sent manually by welder Silk, welding efficiency is too low, is unable to meet production needs.
Summary of the invention
Problem to be solved by this invention is that pipe and attachment fillet weld seam quality can in solution boiler heating surface piping It is unstable by property difference quality measurement.
To solve the above-mentioned problems, the technical solution of the present invention is to provide pipe in a kind of boiler heating surface piping with it is attached The semi-automatic heated filament argon arc welding technique of part, which comprises the following steps:
Step 1): the plate-like welding wire of 0.8~Φ of Φ 1.6 is selected according to the wall thickness of pipe;Selection can be with argon arc welding power source, heat Silk power supply, the matched semi-automatic heated filament argon-arc welding gun of automatic wire feeder;
Step 2): tungsten electrode extension elongation and the distance between tungsten electrode and welding wire are adjusted, it is ensured that welding wire is apart from tungsten needle end 2mm, and immediately below tungsten electrode, welding wire stretches out the length 8-10mm of ignition tip;
Step 3): pipe is welded with attachment fillet weld using semi-automatic heated filament argon arc welding in boiler heating surface piping, Specific process parameter are as follows: protective gas is protected using argon gas, and shield gas flow rate is 10~25L/min, and purity of argon exists 99.95% or more;When using semi-automatic heated filament argon arc welding, 30~100A of heater current, 0.3~18 m/min of wire feed rate, delay The wire feed time 0.1-25.4 seconds, 100~250A of welding current, 10~14V of voltage, delay was received the arc time 1-20 seconds;
Step 4): it in welding process, can be adjusted in real time by the wire feed trim button in semi-automatic heated filament argon-arc welding gun hand handle The size of whole wire feed rate.
Pipe and attachment fillet weld are welded using Manual electric welding item in boiler heating surface piping, and welding quality is difficult to obtain Reliable to guarantee, using manual argon arc welding, welding efficiency is too low, is unable to meet production needs.The present invention solve welding quality and Welding efficiency is difficult to the technical problem taken into account.
Pipe and attachment fillet weld are welded using Manual electric welding item in boiler heating surface piping, and welding quality is difficult to obtain Reliable to guarantee, using manual argon arc welding, welding efficiency is too low, is unable to meet production needs.The present invention solve welding quality and Welding efficiency is difficult to the technical problem taken into account, and providing a kind of pair, welder's skill requirement is lower, welder is easier to operate to, craftsmanship With better efficient, the reliable welding procedure of welding quality.
Specific embodiment
In order to make the present invention more obvious and understandable, it is hereby described in detail below with preferred embodiment.
Embodiment
The semi-automatic heated filament argon arc welding technique of pipe and attachment in a kind of boiler heating surface piping:
1. welding material prepares: the disk for selecting 0.8~Φ of Φ 1.6 and pipe and attachment to be mutually matched according to the wall thickness of pipe Shape welding wire;
2. welding gun prepares: selection can be with argon arc welding power source, heater supply, the matched special semi-automatic heated filament of automatic wire feeder Argon-arc welding gun;
3. welding preparation:
1. understanding the dirts such as the oil of area to be welded, rust;
2. adjusting tungsten electrode extension elongation and the distance between tungsten electrode and welding wire, it is ensured that welding wire apart from tungsten needle end 2mm, and Immediately below tungsten electrode, welding wire stretches out the length 8-10mm of ignition tip;
4. being welded using semi-automatic heated filament argon arc welding, welding procedure is as follows:
1. protective gas is protected using argon gas, shield gas flow rate is 10~25L/min, and purity of argon exists 99.95% or more;
2. welding variables when welding is as follows:
30~100A of heater current, postpones the wire feed time 0.1-25.4 seconds, welding current by 0.3~18 m/min of wire feed rate 100~250A, 10~14V of voltage, delay are received the arc time 1-20 seconds;
3. in welding process, when finding the factors such as workpiece gap is uneven, welder can pass through semi-automatic heated filament argon arc Wire feed trim button in welding gun hand handle adjusts the size of wire feed rate in real time.

Claims (1)

1. the semi-automatic heated filament argon arc welding technique of pipe and attachment in a kind of boiler heating surface piping, which is characterized in that including with Lower step:
Step 1): the plate-like welding wire of 0.8~Φ of Φ 1.6 is selected according to the wall thickness of pipe;Selecting can be with argon arc welding power source, heated filament electricity Source, the matched semi-automatic heated filament argon-arc welding gun of automatic wire feeder;
Step 2): tungsten electrode extension elongation and the distance between tungsten electrode and welding wire are adjusted, it is ensured that welding wire apart from tungsten needle end 2mm, and And immediately below tungsten electrode, welding wire stretches out the length 8-10mm of ignition tip;
Step 3): pipe is welded with attachment fillet weld using semi-automatic heated filament argon arc welding in boiler heating surface piping, specifically Technological parameter are as follows: protective gas is protected using argon gas, and shield gas flow rate is 10~25L/min, and purity of argon exists 99.95% or more;When using semi-automatic heated filament argon arc welding, 30~100A of heater current, 0.3~18 m/min of wire feed rate, delay The wire feed time 0.1-25.4 seconds, 100~250A of welding current, 10~14V of voltage, delay was received the arc time 1-20 seconds;
Step 4):, can be by the wire feed trim button in semi-automatic heated filament argon-arc welding gun hand handle in welding process, adjustment is sent in real time The size of silk speed.
CN201710079673.4A 2017-02-14 2017-02-14 The semi-automatic heated filament argon arc welding technique of pipe and attachment in boiler heating surface piping CN106735767B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710079673.4A CN106735767B (en) 2017-02-14 2017-02-14 The semi-automatic heated filament argon arc welding technique of pipe and attachment in boiler heating surface piping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710079673.4A CN106735767B (en) 2017-02-14 2017-02-14 The semi-automatic heated filament argon arc welding technique of pipe and attachment in boiler heating surface piping

Publications (2)

Publication Number Publication Date
CN106735767A CN106735767A (en) 2017-05-31
CN106735767B true CN106735767B (en) 2019-06-28

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CN201710079673.4A CN106735767B (en) 2017-02-14 2017-02-14 The semi-automatic heated filament argon arc welding technique of pipe and attachment in boiler heating surface piping

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201645010U (en) * 2010-01-26 2010-11-24 特瑞斯信力(常州)燃气设备有限公司 Semi-automatic argon arc welding torch
CN102699493B (en) * 2012-07-03 2015-05-13 马鞍山马钢设备安装工程有限公司 Carbon dioxide (CO2) gas shielded welding vertical downwards welding method for waste heat boiler heat pipe and connecting plate
CN102806414B (en) * 2012-08-20 2014-09-03 上海锅炉厂有限公司 Automatic welding process for full-through welding or non-full-through welding fillet weld of header pup joint
CN203062064U (en) * 2013-02-05 2013-07-17 昆山安意源管道科技有限公司 Semi-automatic hot wire argon arc welding machine
CN103170712B (en) * 2013-03-29 2015-08-19 东方电气集团东方锅炉股份有限公司 A kind of tube socket fillet weld reheat crack prevention method

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