最新刊期
期 5 ， 2018
- 摘要：The polarity and its influences on the usability quality of submerged arc welding were reviewed. The results show that The arc shape is different during DCEP and AC,the metal transfer type is not completely changed by polarity,but the droplet diameter and droplet detachment frequency are different. Although the polarity has some influence on the porosity of submerged arc weld,but the control of moisture in the flux is the most important measures to prevent porosity. The polarity significantly affects the weld geometry,there are HAZ and dilution values in straight polarity are less than in reverse polarity,but since the fluxes used are not the same,different results may be produced. The influence of polarity on the mechanical properties of weld metal of SAW is quite complex. In the waveform control technology,variable polarity submerged arc welding power can significantly improve the deposition efficiency and welding speed,easy to control the penetration and weld shape,to bring a new concept of submerged arc welding field.关键词：polarity;submerged arc welding;usability quality;variable polarity technology;effect
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发布时间：2023-03-29 - 摘要：This research uses the gate type double wire submerged arc welding machine,welding wire diameter of 4.8 mm,fillet welding in the flat position,the welding process test of h-shaped steel body with a web thickness of 20 mm is carried out. The analysis of test results,and with the help of the mathematical model of the T joint,reasonably adjust welding angle,wire eccentric distance and the interrelation between the position of weld fusion zone,and set the welding angle and wire position according to the mathematical model,the web thickness of 20 mm of H-shaped steel,in the case of none groove,H-shaped steel combination of weld has reached the requirements of full penetration welds,UT inspection qualified. The mechanical properties of the specimens are sampled,the impact performance and hardness of the welded joints are in accordance with the requirements of the relevant specifications,and the metallographic structure is well formed from macroscopic and microscopic metallographic analysis.关键词：double wire submerged arc welding;no gouging;mathematical model;full penetration
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发布时间：2023-03-29 - 摘要：In the friction stir welding（FSW）of thick plate or high-strength alloy,tools easily rupture under the high stress and high temperature. Therefore,it is of great significance to analyze the tool load bearing capacity. In this paper,a Fluent fluid-solid coupling model is established to simulate the thermal mechanical process for the FSW process of 9.53 mm thick AA6061 aluminum alloy. The resultant temperature and pressure fields of tool pin are imported into ANSYS model for the structural analysis. The effect of welding speed on the maximum shear force and the safety factor is investigated. It is shown that the tool is the most likely to rupture at the root of tool pin. With the increase of welding speed,the maximum shear force of tool increases,resulting in the decrease in safety factor and load bearing capacity. The simulation results of the model are basically consistent with the experimental data.关键词：friction stir welding;tool;traverse force;load bearing capacity;FLUENT
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发布时间：2023-03-29 - 摘要：In this paper,the welding residual stress of main weld-joint of the wind generator bracket was measured and studied. The butt joint of 40 mm-thickness Q345 D plate in actual working condition was prefabricated by using the MAG welding according to the qualified welding procedure specification of multi-layer and multi-pass welding. In the welding process,the 4 th,8 th and 12 th welded joint residual stress was tested by the blind-hole method. The test results show that the longitudinal residual stress reach peak area in the center of weld which is tensile stress,towards parent material tensile stress is gradually decreased,far away from the center of the weld residual stress is compressive stress. The transverse residual stress decreases from the peak of the tensile stress gradually.关键词：auto-MAG welding;Q345 plate;blind-hole method;residual stress
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发布时间：2023-03-29 - 摘要：<正>为确保杂志质量,尊重和保护作者及他人的知识产权、著作权,构建公平合理、规范健康的学术平台,严格杜绝"学术不端行为"发生,《电焊机》杂志特作以下声明。1、从本声明公布之日起,凡向本刊投稿,作者均应严格遵守《中华人民共和国著作权法》《中华人民共同和知识产权法》等国家有关法律法规,来稿如出现以下任何情况:抄袭剽窃,篡改他人学术成果,伪造或篡改数据、文献,捏造事实,虚假注释,通过中介投稿等,一经发现,立即拒收和退稿2、对因抄袭、剽窃等不端行为造成严重后果者,本刊将
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发布时间：2023-03-29 - 摘要：<正>4月2122日,由中国机械工业教育协会焊接学科教学分委员会、中国机械工程学会焊接学会、哈尔滨工业大学先进焊接与连接国家重点实验室主办,重庆科技学院承办的"中国机械工业教育协会焊接学科教学分委员会2018年年会暨第三届全国大学生焊接创新大赛"在重庆科技学院大学城校区举行。本次活动吸引了来自全国57家单位参加,其中高校53家,参会教师、参赛指导教师和学生共计400余人,大赛最终评出固定命题和自选命题综合一、二、三等奖,最佳设计奖
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发布时间：2023-03-29 - 摘要：<正>2018年5月8日,第23届北京·埃森焊接与切割展览会（以下简称北京·埃森焊接展）在东莞市厚街镇广东现代国际展览中心盛大开幕,这是北京·埃森焊接展首次移师珠三角。来自世界各地的参展商在1、3、4、5、6、7馆共6个展馆向来自国内外约20000名专业观众展示了他们在焊接细分领域的最佳产品和技术解决方案。与往年相似,本届展会集中展示了应用于机械制造、压力容器、汽车制造、轨道交通、石油管道、船舶与海洋工程、航空航天等诸多制造业领域的先进焊接与切割设备及技术,突出了智能、高效焊接与切割的主题。展会现场人流如
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发布时间：2023-03-29 - 摘要：<正>"2018’中国焊接产业论坛——机器人焊接技术及应用"于2018年5月5-7日在珠海召开、本次会议由中国焊接协会主办,中国机械工程学会为指导单位,德国焊接学会、美国焊接学会、新加坡焊接学会、中国机械工程学会焊接分会、中国电器工业协会电焊机分会、北京工业大学和上海交通大学协办,华南理工大学和中国焊接协会焊接设备分会承办,珠海市焊接协会、珠海市福尼斯焊接技术有限公司、珠海瑞凌焊接自动化有限公司和中山市金
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发布时间：2023-03-29 - 摘要：<正>2018年5月9日,第23届北京·埃森焊接与切割展览会开展的第二日,在广东现代国际展览中心（东莞）会议室召开了"《展会综合技术报告》——焊接环境与健康安全"章节编写工作研讨会。北京工业大学栗卓新教授、航天凯天环保股份有限公司工厂环境治理事业部王延斌总工程师、武汉大学肖文凯教授、天津大学杨立军教授、北京金威焊材有限公司李伟总经理助理、郑州机械研究所有限公司/新型钎焊材料与技术国家重点实验室钟素娟副主任、山东聚力焊接材料有限公司特种部王鲲主任、昆山中冶宝钢焊接材料有限公司产品开发部首席专家贾军高工、天津雷公焊接材料有限公司雷万钧董事长、成都电焊机杂志有限公司彭亚
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发布时间：2023-03-29 - 摘要：<正>肯倍焊接技术（北京）有限公司X8 MIG焊机引入了数字化WPS（dWPS）,可以通过电脑的WeldEye界面编辑WPS文件,通过WiFi发送到焊机,预先对焊机参数进行设定。在焊接过程中,电流、电压、焊丝消耗、气体流量、热输入等参数被真实完整记录,实现焊接数据的检测。焊接结束后,所有参数存放在服务器中以便可追溯及型数据深度分析。A7 MIG系列焊机是行业领先的机器人弧焊电源,适合与任何机器人品牌集成。它可以提供全面的丰富的配置,包含焊枪、送丝机、电源和水冷单元。Kemppi Wise软件可显著提高生产效率和焊接质量,可焊接多种材质的金属,为客户
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发布时间：2023-03-29 -
- 摘要：Based on the adaptive re-meshing technique,the fully coupled thermo-mechanical model of friction stir welding of AA6061 is established. The wear loss of welding tool is calculated by Archard equation. The temperature curve and equivalent strain rate are exacted to calculate the grain size and distributions in recrystallization after weld by use of Monte Carlo method. Results indicate that the equivalent strain rate is increased with the increase of wear,which can lead to the increase of nucleation. The grain sizes in the stirring zone can be then decreased. The service life and weld quality can be increased by appropriate wear. Certainly,excessive wear can lead to the decrease of weld quality.关键词：friction stir welding;wear;recrystallization;self optimization;welding tool
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发布时间：2023-03-29 -
Fatigue properties of different thickness butt joints of carbon steel body with laser fillet welding
摘要：Using 2.5 mm+4 mm carbon steel material and ER50-G welding wire to conduct laser filling wire welding test of unequal thickness butt joint. The fatigue properties and macroscopic and microscopic appearance of the unequal thickness butt joints are studied,and the fracture characteristics are analyzed. The results show that the fatigue value of the join is 237.7 MPa when the specified life cycle is 1×107. The fatigue fracture occurs at the welding toe on the side of the 2.5 mm plate. The fracture presents typical fatigue characteristics,and the fatigue lines are clear,and the fracture morphology of the transient area is a dimple of different sizes. This study provides a reliable technical support for laser fillet welding in the manufacture of carbon steel body.关键词：laser fillet welding;carbon steel;fatigue property;rail vehicle- 30
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发布时间：2023-03-29 - 摘要：In this paper,the welding test pieces were prepared by surf acing the low-alloy steel electrode on S271 plate grooving specimens of nuclear grade low-alloy steel by electrode arc welding manual temper bead technique. The influence of local increase of welding heat cycle on the microstructure and properties of HAZ and the influence of the thickness of tempered surfacing layer on the microstructure and properties of HAZ were studied. And the results showed that,the tempering furnace of the microstructure of the HAZ nearby weld toe was insufficient without increasing the welding thermal cycle;and the impact toughness was bad which caused by the martensitic and the interface of retained austenite in the HAZ,the martensitic was detected,the interface of retained austenite was disappeared,and the impact toughness was improved obviously,while increasing the welding thermal cycle. The tempering furnace of the microstructure was improved obviously by part of layer removed. And the value of the hardness（HV0.2） was reducing and the value impact toughness was increasing,with the increasing thickness of grinding.关键词：low alloy steel（S271）;manual temper bead welding;heat-affected zone;microstructure and properties;thermal cycle
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发布时间：2023-03-29 - 摘要：The fatigue life of welded joints directly affects the service life of workpieces or equipment,in order to obtain high quality weld,extending the fatigue life of welds has always been a research hotspot. The concept of fatigue life is explained first,then analyzes the cause of fatigue fracture and the process of fatigue fracture. The methods,operation requirements and matters needing attention of improving the fatigue life of welded joints by adjusting key weld appearance details are emphasized. Five methods to improve the fatigue life are discussed in the paper,the ideal weld profiles,weld toe grinding,weld toe hammering,weld toe remelting,grinding the toes and hammering.关键词：fatigue life;weld profiles;weld toe grinding;weld toe hammering;weld toe remelting
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发布时间：2023-03-29 - 摘要：The high susceptibility to cold crack and reheat crack is a shortcoming with the welding of 1Cr11MoNiW1VNbN martensitic stainless steel. The stellite alloys is a kind of wear-resistant and hard alloys,characteristic with high strength and hardness,poor ductility and poor weldability. Therefore,it is important to choose reasonable welding materials and set the welding and heat treatment process parameters strictly to avoid welding cracks and meet the requirements of surfacing welding. In this paper,through choosing Ni-based Alloy as transition layer and strictly controlling process parameters,the steady and well-surfacing joint was successfully obtained,the feasibility of the surfacing process was proved,the purpose of guiding industrial production was realized also.关键词：martensitic stainless steel;stellite alloy;surfacing;GTAW
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发布时间：2023-03-29 - 摘要：In order to meet the requirement of weight reduction,rail vehicles are increasingly using aluminum alloys. The lap joint is one of the common forms of rail vehicles and it is of great significance to optimize the welding process,reduce the welding deformation and improve the service life of rail vehicles by exploring the welding residual stress distribution and deformation regularities. The MIG welding temperature fields,stress fields and deformation of 2.2 mm and 3 mm lap joints of 6005 A-T6 aluminum alloy are simulated by using thermo-elastic-plastic finite element method. The simulation results are compared with the experimental ones. It is shown that they are in good agreement,which verifies the accuracy of the established finite element model. The welding residual stress of aluminum alloy lap joint is mainly distributed in the weld and heat affected zone,the change in the thickness direction is not obvious,on the whole,the distribution of residual stresses is asymmetric. Welding deformation mainly appears at the edge of the lower plate parallel,the maximum deformation reaches 2.6 mm,and in the longitudinal direction of the plate also produces concave downward deformation.关键词：aluminum alloy;lap joint;numerical simulation;welding temperature field;stress and deformation
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发布时间：2023-03-29 - 摘要：A6061-T6 aluminum alloys is the main structure materials for vehicle manufacture. The train body had suffered severe corrosion damage under the effect of coastal,underground humidity and would affect the reliability of structures. This paper focused on the A6061-T6 aluminum alloy welded joints and study the weight loss,electric chemistry corrosion properties. The results showed that the rate of corrosion weight loss first showed a rapid increase,reaching a maximum at 14 th day,and then with the further extension of the corrosion time,the weight loss gradually decreased,showing a steady decline. The self corrosion potential had become positive with the order of Cl-、SO42-、NO3-of base metals and weld but the self corrosion current had become small at the 5% mass fraction of different corrosion solution. The corrosion acceleration effect of SO42-was weaker than Cl-but higher than NO3-.关键词：A6061-T6 aluminum alloys;corrosion behavior;self corrosion potential;self corrosion current
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发布时间：2023-03-29 - 摘要：Butt welding of LF6 aluminum alloy is carried out by two different welding methods,A-TIG welding and TIG welding. ATIG welding using small current,but TIG welding using large current,then use metallographic analysis,tensile fracture scan,EDS analysis and electron probe element analysis to analyze the differences between microstructure,mechanical properties and element distribution of welded joints. The test results show that the microstructure of A-TIG welding is thicker than that of TIG welding and the hardness of the weld is higher. The tensile performance of A-TIG welded joint is higher than that of TIG welding. The EDS analysis and the electron probe element analysis respectively on the heat affected zone and weld area of A-TIG welding and TIG welding are carried out respectively. The analysis data show that the influence of the two welding methods on the heat affected zone and the weld area element is almost undifferentiated.关键词：A-TIG welding;TIG welding;microstructure;mechanical properties;elemental analysis
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发布时间：2023-03-29 - 摘要：Flash welding is the most important welding method of jointless track in field rail. Because its heating is mainly achieved through the resistance heat of a short circuited liquid bridge. As a result,the liquid bridge existing time affects the heating and end surface’s state. However,the existence time of the liquid bridge is affected by the dynamic performance of the movable clamp of the welding machine. Therefore,aiming at the specific field construction conditions of rail flash butt welding,based on the actual system,under the environment of MATLAB,using Sim Hydraulics software to establish the hydraulic simulation model of forging system of flash welding machine. And the dynamic response of the movable clamp is simulated and analyzed in the case of different structural parameters of the oil system and the change of the load. The results show that the dynamic response speed of the movable clamp can be effectively improved by reducing the diameter and length of the tubing and increasing the hydraulic system pressure of the handpiece. When the welding environment changes,the dynamic response of the movable clamp can be guaranteed by changing the setting value of the hydraulic system and adjusting the control algorithm,which provides the direction for the quality assurance of the welding field.关键词：flash welding;hydraulic system;dynamic response;Sim Hydraulics simulation
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发布时间：2023-03-29 - 摘要：With the rapid development of high-speed and heavy-duty railway,demand for the quality of rail and rail welded joint is higher. In order to improve the strength and hardne ss of steel rail,Panzhihua Steel（Group） developed PG5 U95 Cr hypereutectoid steel rail,Baotou Steel（Group）developed U20 Mn bainitic steel rail. The GAAS80/580 welding machine and induction heat treatment were used for welding and heat treating test. After the series testing as hammer,hardness,impact,tensile,fatigue and the static bending metallographic,the results of the performance tests show that the rail joints meet the standard requirements of TB/T1632-2014,the quality of welded joint is good.关键词：PG5;bainitic steel rail;flash welding;induction heat treatment
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发布时间：2023-03-29 - 摘要：The microstructure and mechanical properties of A6N01 aluminum alloy pulse cold metal transfer（P-CMT） welded joints are observed and analyzed by OM, microhardness and tensile testers. The results show that the weld of P-CMT welded joint is a typical dendritic crystal cast structure. The side of bond close to the weld is a columnar crystal structure, while the side close to the substrate is an equiaxed grain structure. The softening zone of heat affected zone about 10 mm from the center of the weld. The average tensile strength of welded joints is 203 MPa,and the average elongation after fracture A60 is 11.09%. The weld zone and the softening zone of the HAZ are the weak links of the welded joint.关键词：A6N01 aluminum alloy;pulse cold metal transfer welding;microstructure;mechanical property
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发布时间：2023-03-29 - 摘要：Accumulator middle tread run is welded by submerged arc welding for HL1000 nuclear plant in China. The welding is performed with the combination of sphere positioner and narrow gap submerged arc welding machine,and the automation welding of sphere arc-shaped curve welds of ACC middle tread run is realized. The influence factors for welding quality are discussed from material,welding current,voltage,rolling speed of the positioner and weld groove type. The measures are adopted from the design of groove,the selection of welding methods,the control of the size of middle tread run,the control of assembly size,the control of welding process,the welding sequence and so on,and the technology planning is done in all directions. Finally,the welding of three accumulator middle tread runs for HL1000 nuclear plant is accomplished.关键词：nuclear power;accumulator middle tread run;HL1000;sphere positioner;submerged arc welding
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发布时间：2023-03-29 - 摘要：By the principles of TIG and plasma welding, cast aluminum alloy piston for automobile are remelted with three methods respectively,which are traditional TIG,high frequency variable polarity TIG（VPTIG）and plasma. The depth of refining layer,the hardness of refining zone and primary silicon size are measured and analyzed. The result shows that the fine primary silicon size of 4.22 μm and high hardness of 182.4 HV can be acquired in the traditional TIG remelting method; The refining zone depth of 6.10 mm can be got by plasma remelting method,which is the deepest in these three methods; the treatment effect obtained by VPTIG remelting method is between the effects got by above two methods.关键词：cast aluminum alloy;remelting;TIG;plasma;primary silicon
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发布时间：2023-03-29 - 摘要：As the society paying high attention to environmental protection and rational use of energy science,the automobile industry seeks materials with high strength,good formability and low density to replace traditional automotive materials in order to reduce the dead weight of automobile and meet the social development requirements for energy conservation and emission reduction. Although the current development of new type molding materials such as aluminum alloys,magnesium alloys and titanium alloys are not yet mature. They are only partially applied in automobile manufacturing,and most automotive materials are still mainly steels,so high-strength and lightweight products are developed. Lightweight automotive steel plates have become an important issue in the metallurgical industry. Under the premise of ensuring automobile collisions meeting relevant safety standards,in metallurgical industry,the high-strength and lightweight automobile steel plates has been developed to the third generation represented by Quenching and Partitioning（Q&P）technology,but the first and second generations automobile steel plates are still widely used in the automobile industry and are not completely eliminated. The current application,research and development of lightweight and high-strength automotive steel plates are mainly introduced.关键词：llightweight;high-strength steel;current application;progress
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发布时间：2023-03-29 - 摘要：The effect of surfacing paramet ers on welding stress for a voltage stabilizer safe-end pipe is studied by means of finite element numerical simulation, and the design of virtual welding technology is carried out. By ANSYS software, a numerical model of surfacing repair for a NPP voltage stabilizer safe-end pipe is established, and the influences of different welding currents and welding speeds on the welding stress are compared and analyzed. The results show that within the scope of virtual welding analysis study, the larger the welding current, the greater the compressive stress in the original pipe; and the faster the welding speed, the less the compressive stress in the original pipe.关键词：pipe surfacing;residual stress;virtual research
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发布时间：2023-03-29 - 摘要：Surfacing austenitic stainless steel on low carbon steel is an economical and operational method to improve corrosion resistance,which can effectively reduce the corrosion of carbon steels in industrial environment. At present,the stainless steel surfacing technology is widely used to the inner wall of the oil pipeline,the inside wall of pressure vessel and the anticorrosion of turbine blade. However,in the actual project,there are still some unsatisfactory cases of anti-corrosion. Orthogonal experiments are used to optimize the welding parameters of austenitic stainless steel electrostatic cladding on Q235 steel. The optimal welding parameters are current of 390 A,voltage of 32 V,and welding speed at 26 m/h. 3%,6%,9% chromium-nitride alloy powders are respectively added in the welding flux to research the influence of N element on the microstructure and corrosion-resistance property of surfacing layer.Ferric chloride immersion test,10% oxalic acid test and polarization curve test show that adding chromium carbide can improve the potential of pitting corrosion,stabilize passivation coating,restrain the formation of chromium carbide,reduce the degree of poor-chromium,enhance the ability of intergranular corrosion resistance and improve the self-corrosion potential in 3.5%NaCl.关键词：chromium-nitride;austenitic stainless steel;intergranular corrosion;pitting corrosion
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发布时间：2023-03-29 - 摘要：The microstructure characteristics and properties of TIG welded joint of C-276 alloy are studied by OM and other technologies,the corrosion resistance of the weld and base metal in acid and neutral solutions are also investigated. The results show that the microstructure of weld is austenite, and its appearance is columnar and equiaxed. The microstructure of HAZ consists of coarsen austenite and blocky and strip intermetallic compounds. The hardness test shows that the weld microhardness is minimum and about 260 HV. The electrochemical testing indicates that the corrosion resistance of the weld in an acidic environment is weaker than that of the base metal,and the corrosion current density and corrosion rate of the weld are higher than that of the base metal. However, in a neutral environment,the corrosion resistance of the weld is similar to that of the base metal.关键词：C-276 alloy;austenite;microhardness;corrosion rate;corrosion resistance
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发布时间：2023-03-29 -
Microstructure and performance of Fe base surfacing layer prepared by automatic gas shielded welding
摘要：Fe-Cr-C-B-Ti-B4C wear resistant surfacing layer is prepared on Q235 substrate by automatic CO2 gas shielded welding.Microstructure and performance of the surfacing layer are studied by metallographic microscope,X ray diffractometer,hardness tester and abrasive wear machine. The results show that addition of B4C has significant effect on the variety,morphology and quantity of the microstructure,which further affects the hardness and wear resistance of the surfacing layer. The microstructure of surfacing layer without B4C is composed of needle-type martensite,retained austenite and eutectic structure;and after adding B4C,the microstructure of surfacing layer is cellular primary austenite and eutectic structure. With the increase of B4C content,the hardness of the surfacing layer improves gradually,while its wear loss increases firstly and then decreased. When the content of B4C is 20%,the wear resistance of the surfacing layer is the best.关键词：gas shielded welding;B4C;hardness;microstructure;wear resistance- 23
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发布时间：2023-03-29 - 摘要：Mesh transition, an ordinary method is utilized to realize the non-uniform grid division of weld area,HAZ and base metal zone in order to assure the precision and efficiency of finite element modeling in welding process,which is the major cause of more meshing time and bad efficiency. Based on the model of mesh transition,a butt-joint transition algorithm is compiled by the secondary development of Hyper Mesh software in the use of TCL/TK language and visual interface operation is also realized. The example shows that less pre-processing and higher division efficiency can be achieved by the means of secondary development.关键词：TCL/TK;welding simulation;mesh transition;Hyper Mesh
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发布时间：2023-03-29 - 摘要：Curren t industrial production has put forward higher requirements for welding technology,the optimization of traditional welding methods attracts more and more attention. The external magnetic field acting on the arc plasma will cause a significant change in the arc behavior,which affects the droplet transfer and the forming process of molten pool and ultimately influences the appearance of weld and the quality of welded joint. The research progress of welding behavior under the external magnetic field is mainly introduced,including the effects of external magnetic field on arc morphology,parameter distribution,droplet transfer process,and the formation of molten pool and the appearance of weld. Comparing with the traditional welding,under external magnetic field,the droplet transfer frequency increases,the grain of the weld microstructure is more fine and uniform,and the mechanical properties of welded joint improves.关键词：magnetic field;welding arc;droplet transition;appearance of weld
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发布时间：2023-03-29 - 摘要：The long-term friction between bearing outer ring and bearing table in CNG compressor causes excessive tolerance and results in great vibration and noise,which has seriously affected the normal operation of the equipment. For above problems,the oxygen-acetylene flame spraying repair technique of bearing outer ring is researched. The results show that this method can minimize the deformation of the workpiece,and the coating is closely combined to meet the requirements of use. It can effectively solve the problems of vibration and noise caused by excessive tolerance between parts,thus effectively prolonging the service life of the bearing outer ring in CNG compressor. The method is simple,economical and worthy of being popularized in production.关键词：CNG compressor;oxygen-acetylene;flame spraying
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发布时间：2023-03-29 - 摘要：Pressure vessels with quick opening closure are widely used in chemical,aerospace,medical,natural gas and other industrial fields. Quick opening closure is the key equipment for the gas pipeline,and is subject to foreign markets for a long time,which seriously impacts on the present development of China’s nature gas industry. Especially,foreign companies have a monopoly on the high-pressure and large-diameter quick opening closure in the international market. In 2015,successful trial production of localization of quick opening closure broke the foreign monopoly. As the increasing domestic demands of quick opening closure,the welding deformation and leakage problems of quick opening closure and pressure vessel shell are increasing. By summarizing years of welding experience of quick opening closure equipment,measures such as drawing up the welding instructions,welder getting a certificate,the prevention and control of welding deformation are adopted and obtain a good effect,which can provide reference and reference for peers.关键词：quick opening closure;pressure vessel;welding deformation;concentration of stress
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发布时间：2023-03-29 - 摘要：In recent years, the market-oriented economy is becoming increasingly international,and the standardization demands of markets are higher and higher. ISO3834 welding quality system for fusion welding of metallic materials is one of effective ways to connect international markets and welding manufactures,and also is a necessary qualification to cooperate with some relative international corporation.With the introduction and promotion of this series of standards,it is accepted and recognized well by more and more enterprises. The structure of ISO3834 welding quality system for fusion welding of metallic materials is introduced,and combining the actual application of enterprises,the requirements and main work matters of this quality system are introduced from the qualification of welding personnel,welding procedure qualification report（WPQR）,welding filler material management and welding workshop management.关键词：ISO3834;WPQR;welding personnel;welding management
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发布时间：2023-03-29 - 摘要：<正>《电焊机》杂志、中华焊接动力网、"焊割在线"官方微信重点关注用户制造业,2018年第6期专门针对"AMTS上海国际汽车制造技术与装备及材料展览会",特别推出"汽车焊接先进技术"专题。汽车焊接先进技术专题将重点讨论:当代中国汽车评接现状及发展趋势汽车焊接中的焊接设备、焊接工艺、焊接材料的系统化和一体化汽车焊接生产中的智能制造系统、工装及新工艺
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发布时间：2023-03-29 - 摘要：<正>书号:0226售价:38.00元本教材以焊接结构制造工艺过程为主线,全面论述焊接结构制造中的工艺规程编制、备料加工、装配焊接及装备、典型焊接结构的制造技术、质量控制与检测、焊接生产环保和安全等五大板块,共8章。本教材较全面地反映了焊接结构制造的新技术、新方法和新装备。本教材可作为普通高等学校材料成形及控制工程、材料加工工程（焊接方向）、焊接技术与工程的专业课教材,同时
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发布时间：2023-03-29 - 摘要：<正>《电焊机》杂志是中国科技论文统计源期刊（中国科技核心期刊）、《中文核心期刊数据库》收录期刊、"英国《科学文摘》（INSPEC）来源期刊""俄罗斯《文摘杂志》收录期刊""美国《剑桥科学文摘》（CSA）收录期刊""波兰《哥白尼索引》（IC）"收录期刊等。各地邮局均可订阅,邮发代号:62-81,订价:15元/月,180元/年。联系电话:028-83267908联系人:黄秀艳E-mail:bj@toweld.com
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发布时间：2023-03-29 - 摘要：<正>书号:0099定价:41元本书是中国焊接协会培训工作委员会根据劳动部《锅炉压力容器焊工考试规则》和机械电子工业部焊工持证上岗要求组织编写的。本书重点介绍了焊条电弧焊、CO2气体保护焊、埋弧焊、手工鸽极氢弧焊四种焊接方法使用的材料、设备及工艺参数,按实际考试项目要求,详细介绍了61个考核实例.这些实例是吸收我国多年的焊工考试经验并参考德国焊接协会培训经验编写而成的,是近年来推广连弧焊法、单面焊双面
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发布时间：2023-03-29 - 摘要：<正>书号:0163售价:46元本书对易于实现自动化和智能化生产的气体保护焊技术及工程中的应用作了简明地阐述,力求突出先进性和实用性特色。本书主要针对工程中最常见的惰性气体保护焊（TIG、MIG）、活性气体保护焊（CO2焊、MAG）、等离子弧焊（PAW）等焊接方法,突出了各种气体保护焊的工艺特点和应用。给出了具体的工艺参数、相关技术数据及针对一些典型工程结构产品的应用实例,可以指导焊接生产。本书内容选用了一些便于实现自动化焊接的先进的气体保护焊工艺
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发布时间：2023-03-29 - 摘要：<正>书号:0233定价:55元本书概括地介绍了压力容器的结构特点和常用接头形式,压力容器用钢的现行标准及其对理化性能的要求。阐明了对压力容器用焊接材料的基本要求、相关标准及选择原则,在压力容器制造中常用焊接方法的工艺特点和适用范围以及相应焊接设备和工艺装备的技术特性与选用依据、较详细地论述了压力容器制造工艺过程、焊接工艺评定程序和焊接工艺管理,列举了压力容器各种焊接接头的典型焊接工艺规程。对焊接接头中常见缺陷的形成原因作了较全面的分析,并提出了合理的防止
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发布时间：2023-03-29 - 摘要：<正>书号:230定价:34元本书是为满足普通高等教育"材料成型及控制工程"专业毕业后从事焊接技术工作的学生、材料加工工程专业焊接方向的研究生了解和掌握焊接专业基础知识,以及企业开展焊接工程师培训和焊接工程技术人员自学焊接专业基础知识的需要而编写的"焊接工程师系列教程"之一。主要内容有:焊接电弧的电特性和焊接工艺对弧焊电源的要求,弧焊电源的基本特性,弧焊变压器、弧焊整流器、弧焊逆变器、数字控制弧焊电源的基本原理、结构、性能特点及其应用,以及弧焊电
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发布时间：2023-03-29 - 摘要：<正>书号:227定价:49元本书是为满足普通高等教育"材料成形及控制工程"专业毕业后从事焊接技术工作的学生、焊接方向的研究生了解和掌握焊接专业基础知识,以及企业开展焊接工程师培训和焊接工程技术人员自学焊接专业基础知识的需要而编写的"焊接工程师系列教程"之一。全书共11章,主要内容为:前3章系统地论述了作为熔接电弧
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发布时间：2023-03-29 - 摘要：<正>书号:0232定价:41元本书主要讲述如何控制焊接变形。内容包括焊接变形的规律和梁、柱焊接弯曲变形的计算,焊接板结构箱形梁腹板预拱度计算,减小焊接变形的方法,焊接变形的机械矫正方法、火焰矫正的机理和火焰矫正的实际操作方法。本书适合于从事焊接结构设计制造的技术人员和焊接工艺人
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发布时间：2023-03-29 - 摘要：<正>好书推荐,欲购从速!书号:0239定价:45元本书系统介绍了逆变焊机的原理及设计方法,共分为5章。第1章介绍了焊机的发展过程:从弧焊发电机发展为逆变焊机,从晶闸管逆变焊机发展为IGBT逆变焊机,并向着数字化的方向发展。第2章介绍了逆变焊机的主电路设计、功率开关器件的选用和计算,以及控制电路的设计。
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发布时间：2023-03-29 - 摘要：<正>各位作者:为确保杂志质量,尊重和保护作者和他人知识产权、著作权,根据国家期刊出版管理的相关规定,《电焊机》杂志特作以下申明。1.作者应保证是向本刊所投稿件的著作权人,不得抄袭、剽窃、盗用他人科研成果、文章和信息。文章中引用和参考他人文章、著作和成果（包括网络信息）时,按编辑出版规定,应在文章中以参考文献方式明确标识。如作者的文章涉及侵犯他人知识产权、著作权等合法权益时,一切后果文责自负。2.作者所投稿件应保证尚未在其他媒体（包括网络）出版或发表,也未向其他媒体投稿。
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发布时间：2023-03-29
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