最新刊期

    9 2019
    • LU Feng,LU Lihe,NI Cheng,YANG Zonghui
      Vol. 49, Issue 9, Pages: 1-5(2019)
      摘要:Based on the problem that the weld of high-speed MAG welding is poorly formed and easy to produce hump bead,the effects of four kinds of one component active agent,Fe2O3,Cr2O3,K2O and CaF2,on the arc stability,metal transfer and appearance of weld of high-speed MAG welding are studied. The results show that four kinds of active agents can increase the arc stability and metal transfer frequency of high-speed MAG welding,among which Cr2O3 corresponds to the most stable arc with reigning arc voltage drops to about 25 V,the K2O corresponds to the highest metal transfer frequency,reaching 110 droplets per second. The Fe2O3,Cr2O3 and K2O all significantly increase the penetration of high-speed MAG welding weld,optimize the surface appearance of weld,and eliminate hump bead under 1 000 mm/min high speed MAG welding condition.  
      关键词:high speed welding;active agent;hump bead;metal transfer   
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      发布时间:2022-03-15
    • QUAN Shengkai,ZHANG Liang,XIONG Mingyue,ZHAO Meng
      Vol. 49, Issue 9, Pages: 6-18(2019)
      摘要:The investigation status of Sn-Ag lead-free solders Is reviewed comprehensively. The effects of Bi,In,Zn,Al,Cu,Ni,Sb et al rare earths and nanoparticles on the wetting properties,melting temperature,mechanical properties,microstructure and interfacial reactions are discussed. In addition,the problems in the study of Sn-Ag solders are discussed and solutions are proposed. It provides a reference for the research of Sn-Ag lead-free solder.  
      关键词:lead-free solders;Sn-Ag alloy;review;microstructure;mechanical properties   
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      发布时间:2022-03-15
    • AN Xiaodong,WANG Xin,SUN Yongtao,GU Xiaoman,LIU Jie
      Vol. 49, Issue 9, Pages: 19-23(2019)
      摘要:In this paper,the effect of the cooling time t12/8 on microstructural transformation of the SAF2507 heat affected zone(HAZ),which was simulated by GLEEBLE3800 thermal simulation machine was studied. The results indicated that secondary austenite and Widmanstatten austenite made the precipitation increased in the ferrite grain and grain boundary with the increase of cooling time t12/8,Meanwhile,the banded austenite gradually grew up and transformed into dendritic or plume,eventually form a net structure with the increase of cooling time of t12/8. When the cooling time of t12/8 added to 69 seconds,the intermetallic phase which was χ phase precipitated at the boundary between α/γ and α/α.  
      关键词:super duplex stainless steel;thermal simulation;cooling time;phase ratio;corrosion resistance   
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      发布时间:2022-03-15
    • LUAN Weili,ZHU Zhongyin
      Vol. 49, Issue 9, Pages: 24-28(2019)
      摘要:The welding technology of ultra-narrow gap wire filler welding could improve the general properties of welded joints when the filler metals could change the microstructure and chemical elements. This paper focused on the 20 steel-Q345C pipe welded joints properties which welded with the ultra-narrow gap wire filler welding and the tensile strength,bending properties,impact properties and microstructure were studied. The results showed that the tensile strength,bending properties and impact toughness were all in accordance with the standard. Because the higher heat input and faster cooling speed with quench trend then the weld showed the highest microhardness. The microstructure of HAZ was composed of Widmanstatten structure,while the main components of the weld center were proeutectoid ferrite precipitated along grain boundary and acicular ferrite and pearlite in grain boundary. The microstructure of the base metal was lamellar pearlite and ferrite. So the ultra-narrow gap laser wire-filling welding technology for 20 steel-Q345C pipe has good engineering application value.  
      关键词:ultra-narrow gap laser wire filler welding;20 steel-Q345C pipe welded joints;Widmanstatten structure;ferrite;pearlite   
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      发布时间:2022-03-15
    • WANG Zhiguo,DOU Chao,YIN Yuhuan,XU Kui,MA Qianlong
      Vol. 49, Issue 9, Pages: 29-33(2019)
      摘要:Crescent-shaped inclusion was found in the friction stir weld of 2219 aluminum alloy,X-ray detection,optical microscopy and energy spectrum analysis were used to study the distribution characteristics,microstructure and chemical composition of inclusions. The cause of inclusion formation was determined by experimental verification. At last,the influence of inclusion formation mechanism and tensile properties on joints was analyzed. The results show that the inclusions were composed of many abnormally grown Al2Cu particles. The abnormal growth of Al2Cu was due to metal material attached at the thread and the groove of friction stir weld tool during the welding process. Al2Cu particles coarsened under high temperature,Al particles were segregated and peeled off into the weld during welding randomly,the separated Al2Cu formed crescent-shaped inclusion under the action of friction stir weld tool. Crescent-shaped inclusions could be avoided by improving friction stir weld tool structure. It was found by tensile test that the inclusion had no effect on the tensile properties of the joint.  
      关键词:2219 aluminum alloy;friction stir welding;Al2Cu;tool   
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      发布时间:2022-03-15
    • XI Quan,WU Zhenyong,ZHANG Yidian
      Vol. 49, Issue 9, Pages: 34-36(2019)
      摘要:It is a key problem in ship construction to improve and guarantee the welding quality of crane base system. In this paper,the welding performance of DH36 thick plate is studied experimentally. The new technology of ceramic backing is adopted to avoid the adverse effects caused by root cleaning. The problem of incompletely welding defects and controlling assembly clearance has been solved about high strength thick plates for ships. The results such as stretch,bend,impact and hardness tests for welded joints can meet the requirement. It has a good reference for welding high-strengthen steel for marine thick plate.  
      关键词:high-strengthen steel;ceramic backing;welding performance   
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      发布时间:2022-03-15
    • LI Erxing,HAN Yugai,ZHOU Yunhui,LEI Chenglong
      Vol. 49, Issue 9, Pages: 37-41(2019)
      摘要:The INCONEL 625 alloy surfacing layers are obtained by four different welding methods:CO2 gas shielded flux cored wire arc surfacing,electrode arc surfacing, double-layer submerged arc surfacing with band-electrode and double-layer electroslag surfacing with band-electrode. A series of physical and chemical properties of this alloy surfacing layer are analyzed and compared.The rationality of each welding method is verified by comparison. Combining with the results of physical and chemical properties,the surfacing of the inner wall of PTA crystallizer is performed. And the productive task is completed on time and guarantees both quality and quantity.  
      关键词:INCONEL 625;surfacing;welding procedure;intergranular corrosion   
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      发布时间:2022-03-15
    • JIN Liang,KUANG Yanjun,QIU Zhensheng,ZOU Jie
      Vol. 49, Issue 9, Pages: 42-48(2019)
      摘要:The nickel-base alloy cladding and low alloy steel base material of tube-sheet were melted down owing to the abnormal heat input during seal welding between the heat transfer tube and the tube-sheet on a fabricating Steam Generator of a Nuclear Power Plant. Three potential repair schemes were proposed,and which were contrastively analyzed and evaluated from the aspects of operability,technical difficulty,leakage risk and in-service maintenance,etc. As a result,the temper bead welding scheme was determined and performed. Furthermore,the implementation schedule,procedure tests and results of the temper bead welding are introduced. The method of temper bead welding has been applied in engineering and can be used for the reference in dealing with similar cases in nuclear power engineering.  
      关键词:steam generator;seal welding;tube-sheet defect;temper bead welding;repair scheme   
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      发布时间:2022-03-15
    • FU Qiang,LUO Ying,LIU Zhaodong,MIN Yuansheng,GAO Yingxian,ZHEN Hao,WANG Xuxin
      Vol. 49, Issue 9, Pages: 49-54(2019)
      摘要:Welding residual stress is the inherent product of welding process and it has great effect on the welding quality and the service performance of welded structures. In this paper,the welding residual stress induced by arc welding in nuclear power structures is mainly concered,the detrimental effect and influencing factors of welding residual stress are introduced,and the internal stress distribution in the butt-welded specimens and the girth weld specimens are also illustrated;the methods to mitigate the welding residual stress and their merits and demerits are simply demonstrated. The paper can provide references for structure design and stress mitigation of nuclear power welded structures.  
      关键词:nuclear power equipment;welded structure;residual stress;stress mitigation   
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      发布时间:2022-03-15
    • YANG Yatao,XUE Song,GUO Baochao,QI Danhong,MI Dawei
      Vol. 49, Issue 9, Pages: 55-59(2019)
      摘要:The hardfacing procedure of the latch with cobalt-base alloys about the third-generation nuclear power control rod drive mechanism is mainly studied from the aspects of the material weldability,oxyacetylene welding method,welding flame type,welding nozzle size and preheat. And the chemical composition,metallographic microstructure and surface hardness of the hardfacing layer are analyzed. The results show that the oxyacetylene surfacing are adopted as the welding method of hardfacing with cobalt-base alloys.The different nozzle diameters and preheating temperatures have an effect on the chemical composition,hardness and microstructure of the hardfacing layer. The main microstructure of the hardfacing layer is dendritic crystal. The larger nozzle diameters,the more dendritic crystal,the greater probability of secondary dendritic crystal formation. The grain size of hardfacing layer grows up and intragranular precipitation phase increases when the preheating temperature increases.  
      关键词:drive mechanism;latch;cobalt-base alloys;oxyacetylene welding;hardfacing   
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      发布时间:2022-03-15
    • ZHENG Hao,LU Di,SONG Danrong,XU Bin,CHEN Haibo,WU Hao,YAN Lianju
      Vol. 49, Issue 9, Pages: 60-63(2019)
      摘要:TThe existing problems of spare parts management and their improvements in domestic nuclear power station at present and the additive manufacturing features are briefly expounded. The coherence points of additive manufacturing and spare parts management are put forward. Based on the model of spare parts united storage,the model of supplier virtual united storage is put forward,the advantage of this model which can reduce the spare parts management cost and promote management quality is introduced. The generalized and applied routes of additive manufacturing in spare parts field is pointed out.  
      关键词:additive manufacturing;spare part;management   
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      发布时间:2022-03-15
    • LIU Mingyu,YANG Zhipeng,WU Yidang
      Vol. 49, Issue 9, Pages: 64-69(2019)
      摘要:The welding for main pressure-retaining welds is a key procedure in the manufacturing of nuclear island steam generator.The welding experiments of SAW and SMAW for 18MND5 and SA508Gr3Cl2 are respectively performed. The chemical composition and mechanical properties of these two materials under different welding procedures are compared and analyzed. The results show that the test pieces of 18MND5 and SA508Gr3Cl2 with SAW and SMAW have good tensile property and stable test performance, and both can meet the related standard design requirements.  
      关键词:steam generator;main press-retaining welds;low alloy steel;SMAW;SAW   
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      发布时间:2022-03-15
    • WANG Haozheng,LIN Sangxi,LIU Jinping,MA Minghao
      Vol. 49, Issue 9, Pages: 70-74(2019)
      摘要:The grade evaluation of the welding filler material(hereinafter referred to as: welding material evaluation) is the grade-selecting process for the batches of welding materials used for civil nuclear power installation; it provides the basis for the utilization of the specific grade of welding material on construction site. The practice of evaluating the welding material grade used for M310 PWR nuclear power installation engineering is analyzed and the issues that are prone to emerge during the process is discussed, which provides referable information for the grade evaluation of the welding materials used for M310 PWR nuclear power installation engineering.  
      关键词:M310 PWR nuclear power installation engineering;welding material evaluation;effective rang   
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      发布时间:2022-03-15
    • GAO Dejia,ZHANG Jilin,JIANG Bin
      Vol. 49, Issue 9, Pages: 75-77(2019)
      摘要:The linkage model of the arc weld is established,and the relative displacement relationship between the arc weld and the robot arm space is derived. Based on the linkage model,the relationship between wire deposition speed and torch movement speed and equipment limit speed is studied through dynamic simulation experiments. On this basis,the influence law of welding robot wire feeding speed on welding gun moving speed and arc radius is further studied,and the small-scale arc linkage model of steering frame is established. Based on the linkage model of arc welding seam, the method of "year-on-year reduction" is established,which can effectively ensure the consistency of welding wire deposition speed and filling quantity of weld seam after the change of welding speed. The maximum reduction ratio of welding speed of bottom layer of weld seam is 11%. The radius of weld seam is increased after the merging of adjacent arcs. The contour blurring method can reduce the moving speed of the external axle by 10%. The method of taking the center arm of the large external axle supporting the robot axle to the middle position of the straight-fingered arc line is established to optimize the data in the model of arc seam linkage welding,and reduce the nine-axis linkage welding to seven-axis linkage welding,so that the axes of the welding robot can be connected. The stability of dynamic welding is the best.  
      关键词:linkage welding;Robot welding;bogie;small size arc   
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      发布时间:2022-03-15
    • FU Wangqi,LI Tengfei,QIAN Bo,LI Bo
      Vol. 49, Issue 9, Pages: 78-83(2019)
      摘要:Atmosphere protection system is a vital functional unit of selective laser melting(SLM)devices,which ensures the low oxygen environment necessary for SLM processing and affects the performance of SLM formed parts directly. The four options with different number and position of the inlets are simulated by FLUENT. The flow field state of the inert gas in the chamber and its influence on the SLM forming process are simulated,and the optimal option is determined. The results show that the shortest inflating time and the best dust removal effect will be obtained when adopting five inlets: one on the right rear side and four on the top of the chamber,and the intake air volume accounts for 1/4,3/4 of the total,respectively.  
      关键词:selective laser melting;atmosphere protection system;oxygen content;FLUENT   
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      发布时间:2022-03-15
    • MENG Xianwei,XIAO Yulong,TANG Yutong,LIU Shiduo,WANG Yan
      Vol. 49, Issue 9, Pages: 84-87(2019)
      摘要:Welding robot is the main research hotspot of intelligent welding. With the rapid development of industry,the requirements for the performance of welding robots are constantly improving. The development status of welding robot intelligentialize is expound from five aspects: weld tracking system,off-line programming and path planning technology,remote welding technology,virtual simulation and human-computer interaction technology and transformation research technology based on PC. And the application of welding intelligentialize in welding robots,teaching,intelligent welding station systems and et al is summarized in China.  
      关键词:welding intelligentialize;welding robot;application direction   
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    • CHEN Yuhua,XU Mingfang,XIE Jilin,XU Zhangliang,CHEN Yi
      Vol. 49, Issue 9, Pages: 88-90(2019)
      摘要:Based on the problem of the connection between platinum resistance leads and multi-strand wires with dissimilar metal in aerial sensing components,the device and method for precision resistance brazing of fine wires and multi-strand wires with dissimilar metal are developed. The device has simple structure,convenient operation and reliable jigs,and realizes a good connection between platinum resistance leads and multi-strand wires with dissimilar metal. And the obtained joints are fully filled with good performances and appearances,the properties of the joints are better than these of conventional resistance brazing joints,which improves the joint quality and welding efficiency are d and meets the needs of open experimental teaching.  
      关键词:resistance brazing;dissimilar metal;micro-connection technology   
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      发布时间:2022-03-15
    • WU Yifei,FU Qiang,QI Jiacheng
      Vol. 49, Issue 9, Pages: 91-94(2019)
      摘要:An automatic girth welding machine,which based on passive vision technology,was designed to solve the problems of low welding efficiency and poor welding quality of spherical tank girth welding. The walking tracks are attracted on the surface of the spherical tank through the switch magnetic seat,and the welding tractor walks along the tracks to complete the welding of the circular seam. The welding tracking system uses welding images,which collected by the passive vision sensor,to extract the deviation between the weld seam and the weld pool. Furthermore, the extracted deviation is used by the control system to control the rectifying mechanism and realize the welding seam tracking. The result shows that the tracking system corrects the welding deviation,which caused by the installation of walking track and greatly improves the precision of girth seam welding.  
      关键词:passive vision;automatic welding machine;flexible track;welding image processing   
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      发布时间:2022-03-15
    • YU Aiwu,QI Haiyan,CHENG Denghai,QIAN Xiaoming,DONG Xing
      Vol. 49, Issue 9, Pages: 95-98(2019)
      摘要:Double-sided FSW technology with dynamic support was applied in the large diameter spiral tube of aluminum alloy for the first time in this paper,the spiral tube with diameter of 900 mm and length of 20 m was successfully produced in one time,and the welding process was stable and reliable. Dye penetration inspection,ultrasonic inspection and X-ray inspection were carried out on the whole weld of spiral tube,and X-ray inspection were carried out on the partial weld of spiral tube,and the weld thinning and tube roundness were measured. The results showed that no defects were found in the three kinds of inspection,and the weld thinning was strictly controlled in the range of 0.3 ~0.5 mm and the tube roundness was 0.15 ~2 mm. The successful application of double-sided FSW technology with dynamic support in the production of large diameter aluminum alloy spiral tube will effectively avoid low efficiency,metallurgical defects,large deformation,environmental pollution of traditional welding technology. This project will truly realize the welding production of large diameter aluminum alloy spiral tube with high efficiency,high yield,high quality,and green environmental protection.  
      关键词:dynamic support;FSW;large diameter aluminum alloy spiral tube   
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      发布时间:2022-03-15
    • DONG Jiyi,TANG Huawei,YIN Yuhuan,SONG Xuecheng,WANG Jie,QIAN Chen
      Vol. 49, Issue 9, Pages: 99-102(2019)
      摘要:Closed-loop control of friction stir welding process is helpful to realize welding automation in order to improve the stability and reliability of welding quality. Based on the friction stir welding pressure control system,this paper studies the variation of servo drive parameters in the welding process,in order to find out the optimal closed-loop control method. The results show that the spindle torque and Z-axis torque fluctuate greatly in the stable welding stage,and it is difficult to achieve closed-loop control as feedback signal. The closed-loop control of spindle power in welding process can be well carried out under different process parameters,and can be used as an index to measure the heat input of the weld. A closed-loop control method for welding process based on spindle power feedback is proposed,which provides a new idea for welding process control.  
      关键词:friction stir welding;closed-loop control;welding pressure;servo drive parameters   
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      发布时间:2022-03-15
    • YE Fan,WEI Guoqian,YU Xi,LI Shanshan
      Vol. 49, Issue 9, Pages: 103-109(2019)
      摘要:According to the fatigue crack propagation behavior of complex shape welds in actual engineering application and based on the Paris rate propagation model,the M-integral independent of the integral path is used to calculate the stress intensity factor of the crack front. And the stress intensity factor at the intermediate point of the crack front is used as the control parameter of crack propagation. Adopt different crack propagation direction criterion,and the initial surface crack of the weld toe is described by a semicircle. Simulate the dynamic evolution process of the entire crack front at different propagation stages. The fatigue crack growth is divided into three stages. The distribution and variation of stress intensity factors K,K and K of crack front in different propagation stages are calculated and compared. The influence of crack load type on fatigue crack growth is revealed,and the proportion of fatigue life in different expansion stages is calculated.  
      关键词:complex shape welds;fatigue crack;evolution;M-integral;crack front   
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    • XU Fei,ZHANG Kan,CHEN An
      Vol. 49, Issue 9, Pages: 110-115(2019)
      摘要:Friction Stir Welding(FSW) of 2024 aluminum alloy is carried out by selecting the optimized welding parameters. According to the microstructures and morphologies of the joints,the welded joints are divided into different regions,and the residual stresses in different parts of the joints are measured by the small hole method. MT type crack growth test specimens are selected to conduct crack growth tests at different parts of friction stir welded joints. The effects of residual stress on crack growth are studied by comparing crack growth rate between different regions and between welding state and rolling state. The experimental results show that the residual stress of friction stir welding is tensile stress,which promotes crack opening and propagation. In the crack growth test,the residual stress gradually releases with the crack growth,and the crack growth rate in the welded state is close to that in the rolling state. Rolling can eliminate the residual stress and make the residual stress in each area of welded joint tend to be the same,and the crack growth rate also tend to be the same.  
      关键词:friction stir welding;residual stress;crack propagation rate   
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      发布时间:2022-03-15
    • XIE Jianchang
      Vol. 49, Issue 9, Pages: 116-118(2019)
      摘要:Nickel base alloy has good high temperature resistance and corrosion resistance, adopting 625 nickel-based alloy for the overlaying on the surface of carbon steel or alloy steel can guarantees the strength of the base material,ensures the corrosion resistance of material,and saves the material procurement cost. The dilution rate affects the microstructure and mechanical properties of nickel base alloy,also affects the corrosion resistance of the overlaying layer. The effect of postweld heat treatment on the dilution rate of Fe content in overlaying layer is investigated,which supply feasibility solution for production. The Inconel 625 is used for overlaying of different base materials respectively, the thickness of overlaying layer is not less than 3 mm,and it should be at least two layers. And then the postweld heat treatment with or without contrast test is carried out. By comparing and analyzing the Fe element contents in different areas,the results show that postweld heat treatment has no significant effect on the dilution rate of Fe content in overlaying layer. The closer the distance from weld fusion line,the higher the dilution rate of Fe content.  
      关键词:postweld heat treatment;Inconel 625 overlaying;Fe content;dilution rate   
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      发布时间:2022-03-15
    • LI Zhigang,HUANG Wei,LI Yang,XU Xiang,YE Jianxiong
      Vol. 49, Issue 9, Pages: 119-123(2019)
      摘要:Underwater wet welding arc is an arc produced in liquid dielectric and is very different from that in terrestrial gas environment arc. In this paper,an underwater wet welding arc model are created from the angles of electrostatics and particle physics,and it divides the underwater medium into ionized bubbles,transition layer,and liquid layer. Considering the heat emission at the saturation current density described by Sommerfeld’s formula, the underwater DC arc discharge is simulated. The analysis results show the shape of the arc formed by the electron beam and its arc velocity map,and the influence of the arc’s own magnetic field on the electron beam trajectory under the effect of high energy and high current density accompanying the underwater wet welding process.The shape of the arc track is shrunk to a "bell shape".  
      关键词:underwater welding;DC arc discharge;particle physics;electromagnetic finite element analysis   
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      发布时间:2022-03-15
    • HUO Qiaoying,YUN Zhonghuang,WANG Qiang,TONG Chen
      Vol. 49, Issue 9, Pages: 124-130(2019)
      摘要:The four types of welded joint of 304 stainless steel sheet were obtained by TIG welding. They are full penetration butt joint, tee joint,one-side fillet joint and the lap joint. Their mechanical properties,microstructure,residual stress distribution,chloride ion sensitivity are tested and analysized. The results show that among the four types of welded joints,the full penetration butt joint is the best in terms of mechanical properties,residual stress distribution and corrosion resistance,while the one-side fillet joint is the worst in terms of mechanical properties,residual stress distribution and corrosion resistance.  
      关键词:materials processing engineering;water box in the passenger train;304 stainless steel sheet;sheet welding;residual stress analysis;corrosion resistance   
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    • Vol. 49, Issue 9, Pages: 5(2019)
      摘要:<正>2015年12月2日,获四川省新闻出版广电局"川新广报刊[2015]83号"文通知,为促进学术期刊健康发展,规范学术期刊出版秩序,国家新闻出版广电总局于2014年组织开展了学术期刊认定及清理工作,根据总局认定结果,《电焊机》杂志(国内统一连续出版物号CN51-1278/TM)首批获得总局A类期刊认定。《电焊机》杂志将按国家新闻出版广电总局和四川省新闻出版广电局要求,进一步提高出版质量和办刊水平,不断增强影响力传播力和竞争力,争创优秀精品期刊。  
        
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    • Vol. 49, Issue 9, Pages: 5(2019)
      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员、铆焊技术工人阅渎,并可作为高等学校、中等专业学校和技工学校相关专业的教学参考书。  
        
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    • Vol. 49, Issue 9, Pages: 7(2019)
      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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    • Vol. 49, Issue 9, Pages: 18(2019)
      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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    • Vol. 49, Issue 9, Pages: 28(2019)
      摘要:<正>书号:0166定价:99元本手册反映了当前焊接生产的现状和前沿技术,具有实用性、准确性和先进性,兼顾常规技术与先进技术,使读者对焊接新材料、新装备与新技术的运用有扩展思路的空间。读者可从中查找到与焊接技术相关的各种实用资料,是处理和解决焊接问题的必备工具书。本手册主要供工程技术人员、管理人员、高级焊接操作人员和大专院校师生使用。高效优质地生产焊接结构是研究焊接问题的出发点与归宿。本手册介绍了  
        
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    • Vol. 49, Issue 9, Pages: 41(2019)
      摘要:<正>书号:0095定价:16元焊接操作中存在诸多危险因素和有害因素,可能发生触电、火灾、爆炸、灼烫和高处坠落等工伤事故,还可能患眼睛、皮肤、呼吸系统和血液等疾病。因此,焊接属于特种作业,电气焊工属于特殊工种,遵照国务院颁布的有关规定,焊工必须经过安全培训并考试合格,方准独立操作。并且在取得安全考核合格证之后,尚需定  
        
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    • Vol. 49, Issue 9, Pages: 63(2019)
      摘要:<正>书号:0226售价:38.00,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  
        
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    • Vol. 49, Issue 9, Pages: 74(2019)
      摘要:<正>书号:0023售价:58.00元本书介绍了逆变式弧焊机相关的基本电路、功率器件、高频变压器设计及铁磁性材料、高频电容器、PWM集成控制电路、电流传感器、新型绝缘材料等基础知识,同时对逆变式弧焊机发展过程中存在的可靠性、节能、电磁兼容等一系列热点问题进行了探讨和论述,并通过对目前具有代表行的各种逆变式弧焊机的具体描述,反映其市场动态和现状,跟踪逆变式弧焊机的最新发展  
        
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    • Vol. 49, Issue 9, Pages: 74(2019)
      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。  
        
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    • Vol. 49, Issue 9, Pages: 83(2019)
      摘要:<正>书号:0111定价:26元为配合技师评聘工作的开展,满足机械行业对工人技师培训和考评的需要,加快技师培训教材建设,我们经过到上海、江苏、四川等地进行广泛的调研,并结合《通知》精神,确立了教材编写的总体思路;组织了一批由工程技术人员、教师、技师、高级技师组成的编写队伍,编写了这套《机械工业技师考评培训教材》。全套教材共22种,包括四种基础课教材和车工、钳工、机修钳工、工具钳工、镜工、磨工、焊工、铸造工、锻造工、热  
        
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    • Vol. 49, Issue 9, Pages: 98(2019)
      摘要:<正>书号:230定价:34元本工程"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!!!!书是为满足普通高等教育"材料成型及控制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  
        
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    • Vol. 49, Issue 9, Pages: 118(2019)
      摘要:<正>书号:0142定价:20元机械制造业是技术密集型的行业。这个行业对其职工职业素质的要求比较高。在科学技术迅速发展的今天,更是这样。机械行业职工队伍的一半以上是技术工人。他们是企业的主体,是振兴和发展我国机械工业极其重要的技术力量。技术工人队伍的素质如何,直接关系着行业、企业的生存和发展。在市场经济条件下,企业之间的竞争,归根结底是人才的竞争。优秀的技术工人是企业各类人才中重要的组成部分。企业必  
        
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    • Vol. 49, Issue 9, Pages: 118(2019)
      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。本书重点介绍了手工电弧焊、C02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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    • Vol. 49, Issue 9, Pages: 123(2019)
      摘要:<正>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。第3章分析了各种焊接方法对焊机的要求。涉及了焊条电弧焊、TIG焊、CO2气体保护焊、脉冲MIG焊以及埋弧焊,并介绍了  
        
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    • Vol. 49, Issue 9, Pages: 130(2019)
      摘要:<正>书号:0188定价:29元本书撰写的目的是为钎焊技术人员和第一线的操作者提供一本在实际工作中具有参考价值、能够指导钎焊生产,而且使用方便的工具书。本书的特点是既有一定的钎焊基础理论知识,又给出各种不同类型材料的钎焊应用示例;对工程中常用的钎焊工艺方法进行了较详细的论述,同时又对钎焊材料的分类及选用作了比较全面的介绍。本书是以从事实际操作的钎焊技术人员和工人为主要读者对象的小型工具书。内容  
        
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    • Vol. 49, Issue 9, Pages: 130(2019)
      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的物理本质、热源和力源的特征;焊丝熔化和熔滴过渡;母材熔化和焊缝成形规律等内容。后几章则分别讲述了  
        
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