Welding method for thick-wall square steel pipe butt joint
A technology of butt joints and welding methods, applied in welding equipment, welding accessories, characteristics of welding rods, etc., can solve the problems of poor root forming, welding penetration, welding flash, etc., and achieve the improvement of welding efficiency, good appearance and improved fatigue life. Effect
Pending Publication Date: 2021-11-05
青岛中车四方轨道车辆有限公司
9 Cites 0 Cited by
AI-Extracted Technical Summary
Problems solved by technology
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreAbstract
The invention discloses a welding method for a thick-wall square steel pipe butt joint. The welding method comprises the steps that a to-be-welded face of the square steel pipe butt joint comprises an arc-shaped section and a linear section, wherein the arc-shaped section and the linear section are connected end to end, and grooves are formed in the arc-shaped section and the linear section; the to-be-welded face of the square steel pipe butt joint and a to-be-welded face of an adjacent square steel pipe butt joint are assembled in a clearance butt joint mode; horizontal positioning welding is carried out on the grooves; bottoming welding from vertical welding to flat welding is carried out on the arc-shaped section by adopting TIG welding, and TIG welding bottoming welding is carried out on the linear section from a bottoming welding flat welding position of the arc-shaped section; filling welding from vertical welding to flat welding is carried out on the arc-shaped section by adopting MAG welding, and MAG welding filling welding is carried out on the linear section from a filling welding flat welding position of the arc-shaped section; and cosmetic welding from vertical welding to flat welding is carried out on the arc-shaped section by adopting MAG welding, and MAG welding cosmetic welding is carried out on the linear section from a cosmetic welding flat welding position of the arc-shaped section. According to the welding method for the thick-wall square steel pipe butt joint, full penetration of a circular arc transition position of a thick-wall square pipe is guaranteed, and the fatigue life of the square pipe butt joint is prolonged.
Application Domain
Electrode holder supportersWelding accessories
Technology Topic
Image
Examples
- Experimental program(1)
Example Embodiment
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM


Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Similar technology patents
Large compensation external pressing type expansion joint with heat preservation reset
ActiveCN104295849AAvoid Stretch InjuriesImprove fatigue lifePipeline expansion-compensationThermal insulationExpansion jointEnergy consumption
Owner:AEROSUN CORP
308 alloy ingot and preparation method and application thereof
Owner:NORTHEAST LIGHT ALLOY CO LTD
Blade root pre-buried connection structure of wind power electricity generation composite material blade and wind power generation equipment
ActiveCN109296507AImprove fatigue lifeIncrease stiffnessFinal product manufactureMachines/enginesWind forceElectricity
Owner:ZHUZHOU TIMES NEW MATERIALS TECH
Austenitic heat-resisting cast steel and exhaust manifold using the same
ActiveUS20130025270A1Improve creep resistanceImprove fatigue lifeSilencing apparatusMachines/enginesMetallurgyExhaust manifold
Owner:HYUNDAI MOTOR CO LTD +1
Variable-section-line hydraulic expansion tube torsion beam
ActiveCN107310342AImprove fatigue lifeImprove overall performanceInterconnection systemsAxle unitsEngineeringStress concentration
Owner:BAOSHAN IRON & STEEL CO LTD
Classification and recommendation of technical efficacy words
- Improve fatigue life
- Well formed appearance
Decoupler with tuned damping and methods associated therewith
ActiveUS20130217524A1Reduce torsional vibrationImprove fatigue lifeAuxillary drivesRotating vibration suppressionEngineeringDamping torque
Owner:LITENS AUTOMOTIVE INC
Seamless steel tube for use as a steel catenary riser in the touch down zone
Owner:TUBOS DE ACERO DE MEXICO
Treatment method for improving fatigue life and long-life metal material treated by using same treatment
InactiveUS20050230010A1Improve fatigue lifeBlast furnace detailsHeat treatment process controlQuality assurancePre treatment
Owner:NIPPON STEEL CORP
Method for preparing low-heat-generation fatigue-resistant vulcanized rubber
InactiveCN101519510AImprove fatigue lifeImprove the processing environmentButadiene-styrene rubberStearic acid
Owner:SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
A peen forming method for a ribbed structure
ActiveCN101530959AImprove fatigue lifeIncrease the amount of shot peening deformationPeeningDistortion
Owner:AVIC BEIJING AERONAUTICAL MFG TECH RES INST