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Study on full automatic arc welding machine for spherical tank 被引量:2
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作者 蒋力培 张甲英 俞建荣 《China Welding》 EI CAS 2002年第1期34-37,共4页
A full automatic welding machine for spherical tanks' all position multi layer welds has been developed. This machine is mainly composed of a two dimension seam tracking system based on microcomputer's memor... A full automatic welding machine for spherical tanks' all position multi layer welds has been developed. This machine is mainly composed of a two dimension seam tracking system based on microcomputer's memory and a welding tractor as well as rail. The main features of the machine are: while welding the first layer of a seam, its microcomputer system can analyze and store the tracing information from a two dimension sensor, and control the welding head device to realize two dimension real time tracing; while welding the second layer up to the top layer of the seam, it can realize two dimension tracing based on the memorial data, automatically determine the layer number and continually sway the welding head. The welding test shows that the machine has good tracing and welding behavior, and is suitable for spherical tank's all position multi layer welds. 展开更多
关键词 full automatic welding machine spherical tank memorial tracing all position welding
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Research on key control technologies of all-position automatic welding machine 被引量:1
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作者 曾惠林 杜则裕 +1 位作者 马静 黄福祥 《China Welding》 EI CAS 2009年第3期69-73,共5页
The pipeline all-position automatic welding machine system is a special welding system for automatically welding circumferential joint of pipeline on site, which has been widely used to the long-distance pipeline cons... The pipeline all-position automatic welding machine system is a special welding system for automatically welding circumferential joint of pipeline on site, which has been widely used to the long-distance pipeline construction projects due to the advantages of automatic control for welding parameters at all-position, moving speed of bugs and operating. In this paper, the key control technologies of PAWM all-position automatic welding machine ( developed by Pipeline Research Institute of CNPC) such us the automatic control system, control software, personal digital assistant (PDA) software and complex programmable logic device ( CPLD ) program as well us the control method of welding parameter have been described detailedly. With the higher welding quality, higher welding effwiency and lower labor intensity, PA WM all-position automatic welding machine has been successfully applied in many famous pipeline construction projects. 展开更多
关键词 key control technology ALL-POSITION automatic welding machine welding parameters
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Digital controlling for GMA welding machine based on DSP 被引量:1
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作者 华学明 吴毅雄 +2 位作者 张勇 焦馥杰 于乾波 《China Welding》 EI CAS 2003年第2期158-161,共4页
This paper introduced a welding machine for GMAW using digital controlling method based on DSP (Digital Signal Process). By means of flexible programming according to welding technologies and experiences the suitable ... This paper introduced a welding machine for GMAW using digital controlling method based on DSP (Digital Signal Process). By means of flexible programming according to welding technologies and experiences the suitable characteristics of welding machine, such as line compensation, welding voltage and current feedback, wire-feed driving, SCR trigging and so on, can be controlled and self-adjusted using digital signals. Through the designing based on DSP it is put out that the traditional hardware of control circuit is decreased greatly which can enhance the stability and reliability of welding machine. Finally, the welding experiment using CO 2 shielding gas proves that the welding process is stable. 展开更多
关键词 digital signal process welding machine GMAW
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Girth welding system for vortex type refrigeration compressor of air conditioner 被引量:1
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作者 刘小文 马彩霞 +1 位作者 杨思乾 胡记生 《China Welding》 EI CAS 2006年第1期57-60,共4页
According to the requirements of welding process for vortex type compressor of air conditioner manufactured in product line, a special girth welding machine with PLC as control core was developed, which had both uprig... According to the requirements of welding process for vortex type compressor of air conditioner manufactured in product line, a special girth welding machine with PLC as control core was developed, which had both upright and 45 ° incline service positions. And some key technologies were researched, such as structural design of machine body, reliable conduction of rotary weldments and quality control of welding process and so on. The experimental results showed that this machine could satisfy the requirements of welding quality and girth welding technology, results also proved the machine was a high-effwiency and low-cost automatic welding device. 展开更多
关键词 air conditioner compressor girth welding welding machine
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Elucidation of Metallic Plume and Spatter Characteristics Based on SVM During High-Power Disk Laser Welding 被引量:2
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作者 高向东 刘桂谦 《Plasma Science and Technology》 SCIE EI CAS CSCD 2015年第1期32-36,共5页
During deep penetration laser welding,there exist plume(weak plasma) and spatters,which are the results of weld material ejection due to strong laser heating.The characteristics of plume and spatters are related to ... During deep penetration laser welding,there exist plume(weak plasma) and spatters,which are the results of weld material ejection due to strong laser heating.The characteristics of plume and spatters are related to welding stability and quality.Characteristics of metallic plume and spatters were investigated during high-power disk laser bead-on-plate welding of Type 304 austenitic stainless steel plates at a continuous wave laser power of 10 kW.An ultraviolet and visible sensitive high-speed camera was used to capture the metallic plume and spatter images.Plume area,laser beam path through the plume,swing angle,distance between laser beam focus and plume image centroid,abscissa of plume centroid and spatter numbers are defined as eigenvalues,and the weld bead width was used as a characteristic parameter that reflected welding stability.Welding status was distinguished by SVM(support vector machine) after data normalization and characteristic analysis.Also,PCA(principal components analysis) feature extraction was used to reduce the dimensions of feature space,and PSO(particle swarm optimization) was used to optimize the parameters of SVM.Finally a classification model based on SVM was established to estimate the weld bead width and welding stability.Experimental results show that the established algorithm based on SVM could effectively distinguish the variation of weld bead width,thus providing an experimental example of monitoring high-power disk laser welding quality. 展开更多
关键词 high-power disk laser welding metallic plume spatter support vector machine
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Study on intelligent digital welding machine with a self-learning function
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作者 张晓莉 朱强 +2 位作者 李钰桢 龙鹏 薛家祥 《China Welding》 EI CAS 2013年第4期74-80,共7页
A design idea was proposed that it was about intelligent digital welding machine with self-learning and self- regulation functions. The overall design scheme of software and hardware was provided. It was introduced th... A design idea was proposed that it was about intelligent digital welding machine with self-learning and self- regulation functions. The overall design scheme of software and hardware was provided. It was introduced that a parameter self-learning algorithm was based on large-step calibration and partial Newton interpolation. Furthermore, experimental verification was carried out with different welding technologies. The results show that weld bead is pegrect. Therefore, good welding quality and stability are obtained, and intelligent regulation is realized by parameters self-learning. 展开更多
关键词 intelligent digital welding machine SELF-LEARNING large-step calibration
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An automatic arc welding machine for saddle joint seams on large diameter cylinders
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作者 张忠厚 陈基勇 石运伟 《China Welding》 EI CAS 1999年第2期70-75,共6页
This paper deals with the structure, components, characteristics and work principle of a newly developed automatic arc welding machine for saddle joint seams on large diameter cylinders. The equations for designing th... This paper deals with the structure, components, characteristics and work principle of a newly developed automatic arc welding machine for saddle joint seams on large diameter cylinders. The equations for designing the geometry and dimensions of the cam controlling the moving locus of the welding torch have been derived. This welding machine has successfully been used in automatic welding saddle joint seams on boiler drums with good results and low cost. 展开更多
关键词 large diameter cylinders automatic arc welding machine saddle joint seam
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Case-based intelligent computer aided design system of welding machinery
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作者 林三宝 黎明 吴林 《China Welding》 EI CAS 1998年第1期4-9,共6页
The procedure during complex system plan design of welding position-locating machine is studied in this paper. The main difficulties in designing welding position-locating machine utilizing computer are discussed as w... The procedure during complex system plan design of welding position-locating machine is studied in this paper. The main difficulties in designing welding position-locating machine utilizing computer are discussed as well. A method of case-based intelligent CAD system for welding position-locating machine ( WMICAD) is put forward through wide research on design methodology. Object-oriented programming method is also applied to Ms system. The basic idea and realizing method are described. 展开更多
关键词 welding position-locating machine intelligent computer aided design plan design case-based reasoning
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Technology of automatic cladding on internal surface of hydrogenated reactor elbow
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作者 Cul Shusen Yin Dianxiang +1 位作者 Zhao Changsheng Yang KefeiWei Lun and Yin Liang(Harbin Research Institute of Welding) 《China Welding》 EI CAS 1995年第1期11-18,共8页
A newly developed automatic spiral cladding machine for internal surface of hydrogenated reactor elbow is introduced.Workpiece being welded is rotated at various speeds and fed in along axial direction.TIG welding pro... A newly developed automatic spiral cladding machine for internal surface of hydrogenated reactor elbow is introduced.Workpiece being welded is rotated at various speeds and fed in along axial direction.TIG welding process with filler metal is applied with this machine.Welding is performed in flat position. The machine is intellectually controlled by a microprocessor. Torch waving width and welding speed is varied according to a formula,that the product of waving width and welding speed is constant. So the thickness of cladding layers at different points is uniform. The requirements of hydrogenation to cladding are conformed with this machine. 展开更多
关键词 SURFACING ELBOW hydrogenated reactor TIG welding welding machine
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