《汽车车身制造工艺学》复习要点-焊装工艺

《汽车车身制造工艺学》复习要点-焊装工艺 目 录 第9章 汽车车身装焊工艺 ............................................. 错误～未定义书签。 第10章 车身焊接夹具 .................................................................. 4 第11章 车身装配焊接生产线 ............................................................ 5 第12章 汽车车身焊装质量控制 .......................................................... 6 参考答案第 ............................................................................. 7 practitioner examination practitioner certificate. Third stage: laboratory continues to rotate clinical laboratory testing, clinical chemistry, Clinical Immunology tests, Clinical Hematology laboratory, clinical microbiology testing, inspection and emergency blood transfusion test 7 Professional. (2) rounds and the third stage of consultation Web twice a week to attend medical ... To know: 1. automatic biochemical Analyzer calibration, operation and maintenance. 2. different biochemical detection of analyzers for test and evaluation. 3. the core collection, preservation and processing of all kinds of biological specimens. (E) professional master of Clinical Immunology test: 1. Clinical Immunology-related projects, the results of reports and clinical significance of routine testing. (1) hepatitis logo real: hepatitis b serum logo real of determination (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), and hepatitis a and hepatitis c virus antibody determination (2) tumor logo real: methyl tire protein (AFP), and cancer embryo Antigen (CEA), and sugar Antigen 15-3 (CA15-3), and sugar Antigen 19-9 (CA19-9), and sugar Antigen 12-5 (CA12-5), and prostate specific antigen (PSA), and p-like cell cancer related Antigen ( SCC) (3) immune function: immune globulin determination (IgG, and IgA, and IgM, and IgD, and IgE), fill body determination (C3, and C4), t lymphocytes Asia group, and anti-nuclear antibody (ANA), and anti-double chain DNA antibody (AdsDNA), and anti-mitochondrial antibody, and rheumatoid factor (RF) (4) virus antibody: bow insect, and rubella virus, and giant cell virus, and simple herpes virus antibody check (TORCH test) (5) other class: anti-Streptococcus hemolytic pigment "o" (AS O), c-reactive protein (CRP), serum Widal reaction, outside Pei, and cold agglutination test, specific 《汽车车身制造工艺学》复习要点 ——汽车车身焊装工艺部分 第九章 汽车车身装焊工艺 一、学习内容 1(汽车车身装焊工艺特点 焊接工艺基 2( 3(车身焊接方法及选择 4(车身装焊方法的确定原则及内容 5(汽车车身装焊工艺 二、学习目的 1(掌握电阻点焊、CO2焊接基本原理、激光焊接基本原理 2(明确车身焊接常用焊接方法，以及基本原理及焊接缺陷的形成及对策 3(了解车身焊接工艺过程及车身焊接常用焊接方法 三、自我测试 1、填空 1).根据经验，激光焊接中激光焦点位于工件厚度的( )深度时可以获得理想的焊缝。 2).电阻焊的工艺参数是:( )。 3).车身焊接中，螺母的焊接工艺方式主要采用( )。 ). 电阻点焊压痕过深会降低焊点的强度，压痕深度一般不应超过焊件厚度的( )。 4 5).焊接后钢板硬度相当于一整块钢板，将车身强度提高约30%的焊接方法( )。 6).气焊焊枪发生回火的主要原因是( )。 7).CO2焊枪的易损件包括导电嘴、喷嘴 、( )。 8).点焊过程中可能直接造成人身伤害的缺陷是( )。 9). 激光焊接工艺中，产生等离子云的因素激光的功率密度、被焊金属性质、( )。 10).凸焊螺母、凸焊螺栓与冲压件凸焊后压痕深度、挤出高度均不超过板厚的( ) 11). 车身制件分块主要目的是( )。 12). 油箱总成密封部位的焊接( )。 13). CO2焊枪基本功能的( )。 14). 凸焊螺母的凸点作用是提高工件与螺母的:( )。 15). 3mm与1mm的08Al钢板点焊最好选用( )。 16). 修锉电极的目的是为了提高( )。 17). CO2气体保护焊的优点是:( )。 18). 电阻点焊电极材料应有一定的:电导率、热导率、( )。 19). 激光焊的保护气体有:(氦气、氩气 ) 20). 点焊焊接循环包括那几个过程( )。 21). 点焊工艺中，按焊点的形式分类可分为( )。 22). CO2焊接中，焊丝的干伸长度应为焊丝直径的 ( )倍。 23). CO2焊接时，保护气体不纯，焊缝塑性差，容易产生气孔，影响焊接质量，一般其纯度要求?( ). 24). 点焊熔核直径的经验 公式 小学单位换算公式大全免费下载公式下载行测公式大全下载excel公式下载逻辑回归公式下载 为:D=(2δ+3)mm，其中δ为两个焊件中( )件的厚度。 25). 电弧辐射主要产生可见光、红外线、( )三种射线。 26). CO2焊丝中Mn、Si的作用是( )。 27). 焊件组合后，通过电极施加压力，利用通过接头接触面及临近区域产生的电阻热进行焊接的方法称为( )。 28). 利用气体作为电弧介质并保护电弧和焊接区的电弧焊称为( )。 -3 (CA15-n (CEA), and sugar Antigen 15Antiged hepatitis a and hepatitis c virus antibody determination (2) tumor logo real: methyl tire protein (AFP), and cancer embryo (1) hepatitis logo real: hepatitis b serum logo real of determination (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), anrelated projects, the results of reports and clinical significance of routine testing. -cal Immunology test: 1. Clinical Immunologythe core collection, preservation and processing of all kinds of biological specimens. (E) professional master of Clini. 3. nalyzer calibration, operation and maintenance. 2. different biochemical detection of analyzers for test and evaluational. (2) rounds and the third stage of consultation Web twice a week to attend medical ... To know: 1. automatic biochemical Assiontests, Clinical Hematology laboratory, clinical microbiology testing, inspection and emergency blood transfusion test 7 Profe certificate. Third stage: laboratory continues to rotate clinical laboratory testing, clinical chemistry, Clinical Immunologypractitioner examination practitioner specificreactive protein (CRP), serum Widal reaction, outside Pei, and cold agglutination test, -Streptococcus hemolytic pigment "o" (AS O), c-nsect, and rubella virus, and giant cell virus, and simple herpes virus antibody check (TORCH test) (5) other class: antimitochondrial antibody, and rheumatoid factor (RF) (4) virus antibody: bow i-double chain DNA antibody (AdsDNA), and anti-nuclear antibody (ANA), and anti-and IgM, and IgD, and IgE), fill body determination (C3, and C4), t lymphocytes Asia group, and anti like cell cancer related Antigen ( SCC) (3) immune function: immune globulin determination (IgG, and IgA,-5), and prostate specific antigen (PSA), and p-5 (CA12-9), and sugar Antigen 12-9 (CA19-3), and sugar Antigen 192 29). 一般情况下，可应用在室外作业的焊接方法有( )。. 30). 二氧化碳气体在常温常压下的状态( )。 31). 焊接时能量密度最大( )。 32). 采用激光焊接薄板工件时，最好采用哪种形式的离焦量( )。 33). 焊接方法的自动化程度相对较高( )。 34). 解决CO焊氧化性的措施是( )。 2 35). 等离子焊接是依靠什么作为焊接热源的( )。 ). 钨极氩弧焊使用的保护气体是 ( )。 36 37). 二氧化碳气体保护焊的焊接成本较低，其中使用的二氧化碳气体主要来自于 ( )。 38). 常用于可用于乙炔火焰气割的金属( )。 39) TIG焊使用钨作为电极主要是应用其什么特点 ( )。 40). 低碳钢，厚板工件具有长直焊缝，最适合哪种焊接方法 ( )。 41). 焊接时产生的烟尘和弧光相对较少( )。 42)等离子弧焊电源一般具有什么样的外特性( )。 43). 焊接方法对工件的焊接变形量最小、热影响区最小( )。 44). 在基体金属表面上堆焊耐磨耐腐蚀合金常用的焊接方法是( ) 45). 在机械制造生产中，经常需要将两个或两个以上的零件按照一定的形状和位置进行连接时，属于不 可拆卸的连接有( )。 46). 电阻焊主要包括( )。 47). 一般情况下，自由电弧在受到哪几种压缩作用后形成等离子弧( )。 ). 常见的焊工职业病有哪些( )。 48249). 根据公式Q,IRt，可知点焊的焊接参数都有哪些( )。 50). 点焊方法中，焊接电极的功能包括 ( )。 51). 减少CO2焊飞溅的措施( ) 52). 常见的焊缝缺陷有( ) 53). 弧焊时产生的弧光对人体有害，其中( )和红外线的危害最大。 54). 电阻焊设备构成一般包括机械装置、供电装置和( )。 55). 等离子弧的工作方式有转移弧和( )。 56). 大电流等离子弧焊的的两种工艺有( )和熔入型等离子弧焊。 57).焊接成型工艺中基本焊接方法有( )、压力焊接、钎焊 58)(目前应用于激光焊接中的激光发生器只要有( )和YAG固体激光器两种。 59)(二氧化碳焊接中，产生的气孔种类一般会有CO气孔、N气孔和( )。 2 60)(二氧化碳在高温下是不稳定的，通常在电弧区会分解成CO和( )。 61)(常见的悬挂点焊枪有C型枪和( )。 62)(等离子弧的能量集中，能量密度很大且温度高，因此可用来焊接和( )。 2、名词解释 1).点焊: 2).CO2气体保护焊 3).凸焊 4).激光焊接 5).焊缝形状尺寸超差 6).CO2焊接飞溅 7).气体保护电弧焊 3、简述 题 快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题 1).简述车身点焊参数的选择主要取决于那几方面,最常用的检验试样的方法是什么,怎样判定优质焊点。 2).简述CO2焊接飞溅过大形成的原因。 9 (CA19-3), and sugar Antigen 19-3 (CA15-real: methyl tire protein (AFP), and cancer embryo Antigen (CEA), and sugar Antigen 15 logo n (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), and hepatitis a and hepatitis c virus antibody determination (2) tumorof reports and clinical significance of routine testing. (1) hepatitis logo real: hepatitis b serum logo real of determinatio related projects, the results-ological specimens. (E) professional master of Clinical Immunology test: 1. Clinical Immunologymical detection of analyzers for test and evaluation. 3. the core collection, preservation and processing of all kinds of biiocheto attend medical ... To know: 1. automatic biochemical Analyzer calibration, operation and maintenance. 2. different b spection and emergency blood transfusion test 7 Professional. (2) rounds and the third stage of consultation Web twice a weeklinical chemistry, Clinical Immunology tests, Clinical Hematology laboratory, clinical microbiology testing, inpractitioner examination practitioner certificate. Third stage: laboratory continues to rotate clinical laboratory testing, cWidal reaction, outside Pei, and cold agglutination test, specificreactive protein (CRP), serum -Streptococcus hemolytic pigment "o" (AS O), c-irus antibody check (TORCH test) (5) other class: antibody, and rheumatoid factor (RF) (4) virus antibody: bow insect, and rubella virus, and giant cell virus, and simple herpes vmitochondrial anti-double chain DNA antibody (AdsDNA), and anti-nuclear antibody (ANA), and anti-t lymphocytes Asia group, and antiune function: immune globulin determination (IgG, and IgA, and IgM, and IgD, and IgE), fill body determination (C3, and C4), like cell cancer related Antigen ( SCC) (3) imm-5), and prostate specific antigen (PSA), and p-5 (CA12-9), and sugar Antigen 12-3 3).简述点焊过程中产生飞溅的主要因素: 4).简述激光拼焊的主要优点. 5).在二氧化碳气体保护焊时，为什么要在焊接气路系统中串连一个加热器, 6)(下图为埋弧焊时焊缝的形成过程，分别指出1、2、3、6、7代表什么, 7)(二氧化碳焊接控制器要能够实现哪些焊接程序控制, 8)(电阻焊变压器具有哪些特点, 9)(半自动二氧化碳焊机及附属设备都包括哪些, 10)(埋弧自动焊有哪些优点, 11)(激光焊接的工艺参数包括哪些, )(二氧化碳焊接都有哪些优点, 12 4(综合应用 1)、简述二氧化碳焊接的冶金特点，列举发生直接氧化和间接氧化过程的化学反应。 2)、试述电阻点焊的优点? 3)、在铝及铝合金焊接时使用直流焊机正接是否合理。如不合理应使用哪种形式，为什么。 第十章 车身焊接夹具 一、学习内容 1、车身焊接夹具概述 2、装焊件在夹具上的定位与夹紧 3、车身焊装夹具应用 二、学习目的 1(掌握焊接夹具概念、种类及应用 2(明确车身焊接夹具定位、夹紧的基本原理 工件的定位:定位基准的选择、定位过程、六点定位原理、常用定位器的应用及技术要求 工件夹紧:夹紧件的作用、对夹紧件的要求、夹紧力三要素、常用夹紧件 3(车身焊接夹具 1(合件、分总成焊接夹具:掌握定位部件名称、认识书中10-23图 2(车身总成焊接夹具:一次性装配定位的总成夹具、多次性装配定位的总成夹具 三、自我测试 1(名词 焊接夹具 3), and sugar Antigen 19-3 (CA15-n (CEA), and sugar Antigen 15Antiged hepatitis a and hepatitis c virus antibody determination (2) tumor logo real: methyl tire protein (AFP), and cancer embryo (1) hepatitis logo real: hepatitis b serum logo real of determination (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), anrelated projects, the results of reports and clinical significance of routine testing. -cal Immunology test: 1. Clinical Immunologythe core collection, preservation and processing of all kinds of biological specimens. (E) professional master of Clini. 3. nalyzer calibration, operation and maintenance. 2. different biochemical detection of analyzers for test and evaluational. (2) rounds and the third stage of consultation Web twice a week to attend medical ... To know: 1. automatic biochemical Assiontests, Clinical Hematology laboratory, clinical microbiology testing, inspection and emergency blood transfusion test 7 Profe certificate. Third stage: laboratory continues to rotate clinical laboratory testing, clinical chemistry, Clinical Immunologypractitioner examination practitioner specificreactive protein (CRP), serum Widal reaction, outside Pei, and cold agglutination test, -Streptococcus hemolytic pigment "o" (AS O), c-nsect, and rubella virus, and giant cell virus, and simple herpes virus antibody check (TORCH test) (5) other class: antimitochondrial antibody, and rheumatoid factor (RF) (4) virus antibody: bow i-double chain DNA antibody (AdsDNA), and anti-nuclear antibody (ANA), and anti-and IgM, and IgD, and IgE), fill body determination (C3, and C4), t lymphocytes Asia group, and anti like cell cancer related Antigen ( SCC) (3) immune function: immune globulin determination (IgG, and IgA,-5), and prostate specific antigen (PSA), and p-5 (CA12-9), and sugar Antigen 12-9 (CA19-4 2(简述题 1)、简述车身焊接中焊接夹具影响焊接总成质量的因素。 2)、简述焊装夹具的设计基本原则。 3、综合应用 第十一章 车身装配焊接生产线 一、学习内容 1、焊接生产线基础 2、生产线作用及组成部分 3、贯通式装焊生产线、柔性焊接生产线、其他形式焊接生产线 4、车身焊装生产线的发展趋势 二、学习目的 1、了解车身焊接生产线的作用、构成以及工作方式 2、明确常用焊装生产线的形式 3、了解车身焊装生产线的发展趋势及目前工厂常用焊接生产线 三、自我测试 1(名词 1) 焊接生产线、贯通式生产线、柔性生产线 2(简述题 1)、简述焊接生产线定义，并列举2种典型焊接生产线: 2)、简述采用点焊机器人的主要优点; 第十二章 汽车车身焊装质量控制 一、学习内容 1、车身装焊偏差分析及质量控制方法 2、焊接夹具偏差 3、基于知识的车身装配尺寸偏差源快速诊断方法 二、学习目的 1、了解车车身装焊质量控制主要内容 2、理解了质量控制目的及基本方法 3、理解车身装焊偏差分析及质量控制方法 4、了解生产中质量控制要住包括:功能尺寸、焊接质量、外观质量; 三、自我测试 1(名词 1). 工程过程控制 2). 统计过程控制 3). 2mm工程 2(简述题 1)、汽车焊接夹具与其他夹具相比，有那些特殊性。 2)、采用“N-2-1”定位原理怎么减少夹具引起偏差。 3), and sugar Antigen 19-3 (CA15-real: methyl tire protein (AFP), and cancer embryo Antigen (CEA), and sugar Antigen 15 logo n (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), and hepatitis a and hepatitis c virus antibody determination (2) tumorof reports and clinical significance of routine testing. (1) hepatitis logo real: hepatitis b serum logo real of determinatio related projects, the results-ological specimens. (E) professional master of Clinical Immunology test: 1. Clinical Immunologymical detection of analyzers for test and evaluation. 3. the core collection, preservation and processing of all kinds of biiocheto attend medical ... To know: 1. automatic biochemical Analyzer calibration, operation and maintenance. 2. different b spection and emergency blood transfusion test 7 Professional. (2) rounds and the third stage of consultation Web twice a weeklinical chemistry, Clinical Immunology tests, Clinical Hematology laboratory, clinical microbiology testing, inpractitioner examination practitioner certificate. Third stage: laboratory continues to rotate clinical laboratory testing, cWidal reaction, outside Pei, and cold agglutination test, specificreactive protein (CRP), serum -Streptococcus hemolytic pigment "o" (AS O), c-irus antibody check (TORCH test) (5) other class: antibody, and rheumatoid factor (RF) (4) virus antibody: bow insect, and rubella virus, and giant cell virus, and simple herpes vmitochondrial anti-double chain DNA antibody (AdsDNA), and anti-nuclear antibody (ANA), and anti-t lymphocytes Asia group, and antiune function: immune globulin determination (IgG, and IgA, and IgM, and IgD, and IgE), fill body determination (C3, and C4), like cell cancer related Antigen ( SCC) (3) imm-5), and prostate specific antigen (PSA), and p-5 (CA12-9), and sugar Antigen 12-9 (CA19-5 3、综合应用 1)、试分析常见影响白车身装焊尺寸形状偏差主要因素，目前各汽车制造厂白车身质量主要采用什么测量方法，质量控制技术主要方法有哪两种。 9), and sugar Antigen 12-9 (CA19-3), and sugar Antigen 19-3 (CA15-n (CEA), and sugar Antigen 15Antiged hepatitis a and hepatitis c virus antibody determination (2) tumor logo real: methyl tire protein (AFP), and cancer embryo (1) hepatitis logo real: hepatitis b serum logo real of determination (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), anrelated projects, the results of reports and clinical significance of routine testing. -cal Immunology test: 1. Clinical Immunologythe core collection, preservation and processing of all kinds of biological specimens. (E) professional master of Clini. 3. nalyzer calibration, operation and maintenance. 2. different biochemical detection of analyzers for test and evaluational. (2) rounds and the third stage of consultation Web twice a week to attend medical ... To know: 1. automatic biochemical Assiontests, Clinical Hematology laboratory, clinical microbiology testing, inspection and emergency blood transfusion test 7 Profe certificate. Third stage: laboratory continues to rotate clinical laboratory testing, clinical chemistry, Clinical Immunologypractitioner examination practitioner specificreactive protein (CRP), serum Widal reaction, outside Pei, and cold agglutination test, -Streptococcus hemolytic pigment "o" (AS O), c-nsect, and rubella virus, and giant cell virus, and simple herpes virus antibody check (TORCH test) (5) other class: antimitochondrial antibody, and rheumatoid factor (RF) (4) virus antibody: bow i-double chain DNA antibody (AdsDNA), and anti-nuclear antibody (ANA), and anti-and IgM, and IgD, and IgE), fill body determination (C3, and C4), t lymphocytes Asia group, and anti like cell cancer related Antigen ( SCC) (3) immune function: immune globulin determination (IgG, and IgA,-5), and prostate specific antigen (PSA), and p-5 (CA12-6 第九章答案: 1.填空 1)1/3 2)电弧电压、电极压力、焊接时间、焊接电流 3)凸焊 4) 20% 5)激光焊 )混合气体的流速小于燃烧速度 6 7)送丝软管 8)飞溅 9)保护气体 10) 30% 11)有利于保证焊接质量、分步制造容易造成许多在总装后方便焊接的工作、可以降低夹具的复杂程度、 每个部件或合件可以平行的展开作业，可以缩短装焊时间 12)缝焊 13)疏导焊丝、传导电流、传导气体 14)电流密度 15)硬规范 16)电流密度 17)成本底、生产效率高、焊后不清渣、抗裂能力强 )红硬性 18 19)氦气、氩气 20)预压、焊接、维持、休止、 21)双面单点、单面双点、单面单点、双面双点、多点 22) 10-12 23) 99.5% 24)薄板 25)紫外线 26)脱氧 27)电阻焊 28)气体保护焊 29)手工电弧焊 30)很稳定 31)激光 32)正离焦 33)埋弧焊 34)脱氧 35)等离子弧 36)氩气 37)酿造厂或化工厂的副产品 38)低碳钢 39)高熔点、耐高温 40)埋弧焊 41)埋弧焊 42)陡降外特性 43)激光焊 -3), and sugar Antigen 19-3 (CA15-real: methyl tire protein (AFP), and cancer embryo Antigen (CEA), and sugar Antigen 15 logo n (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), and hepatitis a and hepatitis c virus antibody determination (2) tumorof reports and clinical significance of routine testing. (1) hepatitis logo real: hepatitis b serum logo real of determinatio related projects, the results-ological specimens. (E) professional master of Clinical Immunology test: 1. Clinical Immunologymical detection of analyzers for test and evaluation. 3. the core collection, preservation and processing of all kinds of biiocheto attend medical ... To know: 1. automatic biochemical Analyzer calibration, operation and maintenance. 2. different b spection and emergency blood transfusion test 7 Professional. (2) rounds and the third stage of consultation Web twice a weeklinical chemistry, Clinical Immunology tests, Clinical Hematology laboratory, clinical microbiology testing, inpractitioner examination practitioner certificate. Third stage: laboratory continues to rotate clinical laboratory testing, cWidal reaction, outside Pei, and cold agglutination test, specificreactive protein (CRP), serum -Streptococcus hemolytic pigment "o" (AS O), c-irus antibody check (TORCH test) (5) other class: antibody, and rheumatoid factor (RF) (4) virus antibody: bow insect, and rubella virus, and giant cell virus, and simple herpes vmitochondrial anti-double chain DNA antibody (AdsDNA), and anti-nuclear antibody (ANA), and anti-t lymphocytes Asia group, and antiune function: immune globulin determination (IgG, and IgA, and IgM, and IgD, and IgE), fill body determination (C3, and C4), like cell cancer related Antigen ( SCC) (3) imm-5), and prostate specific antigen (PSA), and p-5 (CA12-9), and sugar Antigen 12-9 (CA197 44)埋弧焊 45)粘接、焊接 46)点焊 、凸焊、缝焊 47)机械压缩 、热压缩、电磁收缩 48)焊工尘肺、锰中毒、焊工金属热 49)电流、压力、焊接时间 50)夹紧零件、传递电流、传递压力、迅速散热 )合理选择工艺参数、采用电流波形控制、采用药心焊丝、在CO2气体中加入Ar气 51 52)气孔、夹渣、裂纹、未焊透、根部未熔合 53)紫外线 54)控制装置 55)非转移弧 56)穿孔型等离子弧焊 57)熔化焊接 58)CO2气体激光器 59)H2气孔 60)O 61)X型焊枪 62) 切割 2、名词解释 1)焊接:是利用局部加热或局部加压，或两者兼用的方法，使被连接处的金属熔化或达到塑性状态，以促使两金属的原子相互渗合并接近到一定的金属晶格距离(0.3-0.5mm)，原子间的结合力就可以把两个分离的金属构件连接在一起。 2)电阻焊:(resistance welding)是将被焊工件接合后通过电极施加压力，并通以电流，利用电流流经工件接触面及邻近区域产生的电阻热效应将其加热到熔化或塑性状态，使之形成金属结合的一种方法。 3)凸焊: 在一工件的贴合面上预先加工出一个或多个突起点，使其与另一工件表面相接触并通电加热，然后压塌，使这些接触点形成焊点的电阻焊方法。 4)激光焊接: 以聚焦的激光束作为能源轰击焊件所产生的热量进行焊接的方法。 5)焊缝形状尺寸超差: 状高低不平，宽窄不齐和偏离待焊处，不仅造成外形难看，而且影响焊缝的质量，造成连接强度降低，应力分布集中，使焊件结构的使用安全性下降。 6)CO2焊接飞溅:进行CO焊接的时候，在电弧周围总是有细小的火星四溅，溅出颗粒状的高温液态2 金属飞溅物，粘在焊缝及其附近金属表面上。这个过程和现象叫焊接金属飞溅，简称焊接飞溅。CO2的焊接飞溅是焊接过程的产物，不能根除，采取有效的控制措施，焊接飞溅可以大大的减少。 7)气体保护电弧焊:利用气体作为电弧介质并保护电弧和焊接区的电弧焊; 3、简述题 1) ?参数选择主要取决于材料的性质、板厚、结构形式及所用设备的特点; ?最常用的检验式样的方法是撕开法; ?优质焊点的判定标准是:在撕开试样的一片上有圆孔,另一片上是凸台; 2) ?焊接电流电压过高; ?送丝不均匀; ?导电嘴磨损严重; ?焊丝及焊件表面有锈层; ?干伸太长。 3) ?焊接参数选择不当; ?操作者的操作手法 ?电极“错牙” 5 (CA12-9), and sugar Antigen 12-9 (CA19-3), and sugar Antigen 19-3 (CA15-n (CEA), and sugar Antigen 15Antiged hepatitis a and hepatitis c virus antibody determination (2) tumor logo real: methyl tire protein (AFP), and cancer embryo (1) hepatitis logo real: hepatitis b serum logo real of determination (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), anrelated projects, the results of reports and clinical significance of routine testing. -cal Immunology test: 1. Clinical Immunologythe core collection, preservation and processing of all kinds of biological specimens. (E) professional master of Clini. 3. nalyzer calibration, operation and maintenance. 2. different biochemical detection of analyzers for test and evaluational. (2) rounds and the third stage of consultation Web twice a week to attend medical ... To know: 1. automatic biochemical Assiontests, Clinical Hematology laboratory, clinical microbiology testing, inspection and emergency blood transfusion test 7 Profe certificate. Third stage: laboratory continues to rotate clinical laboratory testing, clinical chemistry, Clinical Immunologypractitioner examination practitioner specificreactive protein (CRP), serum Widal reaction, outside Pei, and cold agglutination test, -Streptococcus hemolytic pigment "o" (AS O), c-nsect, and rubella virus, and giant cell virus, and simple herpes virus antibody check (TORCH test) (5) other class: antimitochondrial antibody, and rheumatoid factor (RF) (4) virus antibody: bow i-double chain DNA antibody (AdsDNA), and anti-nuclear antibody (ANA), and anti-and IgM, and IgD, and IgE), fill body determination (C3, and C4), t lymphocytes Asia group, and anti like cell cancer related Antigen ( SCC) (3) immune function: immune globulin determination (IgG, and IgA,-5), and prostate specific antigen (PSA), and p-8 ?零件间的装配间隙 ?零件表面质量 4) ?减少零件和模具数量; ?减少焊点数目; ?优化材料用量; ?降低零件重量; ?降低成本和提高尺寸精度; ) 气瓶中的二氧化碳并不纯净，含有水分 5 二氧化碳由液态变为气态的过程是吸热过程 水遇冷变凝结冰，在气路中发生冻堵，因此需要增加加热装置 6) 1是焊剂 2是焊丝 3是电弧 6是焊缝 7是工件 7) 启动 提前通气 接通焊接电源、送丝、引弧 (开始焊接) 停止送丝 切断焊接电源 滞后停气 8) ?电流大、电压低 ?功率大、可调节 ?断续工作状态，无空载运行 ) 焊枪 9 送丝机构 焊接控制装置 焊接电源 保护气体气路系统 连接电缆 10) ?生产效率高 ?焊缝质量高 ?劳动条件好 11) ?功率密度 ?激光脉冲波形 ?激光脉冲宽度 ?离焦量 12) ?焊接成本低 ?焊接生产率高 ?应用范围广 ?抗锈能力强 ?操作性好 4、综合应用题 1)直接氧化的化学反应有: Fe+CO=FeO+CO 2 Si+CO=SiO+O 2 Mn+CO=MnO+O 2 Fe+O=FeO Si+2O=SiO 2 -9), and sugar Antigen 12-9 (CA19-3), and sugar Antigen 19-3 (CA15-real: methyl tire protein (AFP), and cancer embryo Antigen (CEA), and sugar Antigen 15 logo n (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), and hepatitis a and hepatitis c virus antibody determination (2) tumorof reports and clinical significance of routine testing. (1) hepatitis logo real: hepatitis b serum logo real of determinatio related projects, the results-ological specimens. (E) professional master of Clinical Immunology test: 1. Clinical Immunologymical detection of analyzers for test and evaluation. 3. the core collection, preservation and processing of all kinds of biiocheto attend medical ... To know: 1. automatic biochemical Analyzer calibration, operation and maintenance. 2. different b spection and emergency blood transfusion test 7 Professional. (2) rounds and the third stage of consultation Web twice a weeklinical chemistry, Clinical Immunology tests, Clinical Hematology laboratory, clinical microbiology testing, inpractitioner examination practitioner certificate. Third stage: laboratory continues to rotate clinical laboratory testing, cWidal reaction, outside Pei, and cold agglutination test, specificreactive protein (CRP), serum -Streptococcus hemolytic pigment "o" (AS O), c-irus antibody check (TORCH test) (5) other class: antibody, and rheumatoid factor (RF) (4) virus antibody: bow insect, and rubella virus, and giant cell virus, and simple herpes vmitochondrial anti-double chain DNA antibody (AdsDNA), and anti-nuclear antibody (ANA), and anti-t lymphocytes Asia group, and antiune function: immune globulin determination (IgG, and IgA, and IgM, and IgD, and IgE), fill body determination (C3, and C4), like cell cancer related Antigen ( SCC) (3) imm-5), and prostate specific antigen (PSA), and p-5 (CA129 Mn+O=MnO 间接氧化的化学反应有: Si+2FeO=SiO+2Fe 2 Mn+FeO=MnO+Fe C+FeO=CO+Fe 2)焊接质量好，使被焊工件达到原子级连接; ? 利用工件自身的电阻产生热量; 焊接过程中不需要添加任何填充材料和保护气体; ? ? 生产效率高，成本低，劳动条件好; ? 操作简单，容易实现自动化。 3) 不合理。 应使用交流焊机或直流反接。 因为铝及铝合金的表面有一层熔点很高的氧化层，不利于金属的熔合，难以形成焊缝。使用交流焊机或直流反接时，在工件附近会产生阴极雾化作用，可以有效地消除氧化层提高焊缝质量。 第十章答案: 1(名词 焊接夹具: 在焊接生产中,为提高产品质量和产效率, 经常使用一些工具或装置来完成装配和焊接工作,我们把其中夹持并并确定工件位置的工具和装置通称为焊接夹具; 2(简述题 )简述车身焊接中焊接夹具影响焊接总成质量的因素。 , ?定位元件磨损; ?夹具结构设计不合理; ?定位元件失效; ?夹紧力不足; 2)简述焊装夹具的设计基本原则: ?保证焊件焊接后几何形状和尺寸精度符合图纸和技术要求; ?使用安全可靠; ?便于施工和操作; ?容易制造和便于维修; ?降低夹具的制造成本; 3(综合应用 第十一章答案 1(名词 焊接生产线: 是指必须经过焊接工艺才能完成完整产品的综合生产线，其中必然包括专用焊接设备(专机、机器人等)、辅助工位设备(工艺装备、辅助器具等)以及各种传输设备。 贯通式生产线:指焊装生产线的装焊夹具与工件的传输装置呈分离状态，焊装夹具处于静态; 柔性生产线:是由装卸小车、主控台、随行工装、焊接站和存放台等五部分组成。随行工装对工件夹紧后，利用传感器的输出信号将随行工装上面的工件由运输小车运送到焊接站内的焊接变位机上，而后由主控台进行程序控制并由机械手进行全自动焊接。 2(简述题 ,)简述焊接生产线定义，并列举2种典型焊接生产线: 3), and sugar Antigen 19-3 (CA15-n (CEA), and sugar Antigen 15Antiged hepatitis a and hepatitis c virus antibody determination (2) tumor logo real: methyl tire protein (AFP), and cancer embryo (1) hepatitis logo real: hepatitis b serum logo real of determination (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), anrelated projects, the results of reports and clinical significance of routine testing. -cal Immunology test: 1. Clinical Immunologythe core collection, preservation and processing of all kinds of biological specimens. (E) professional master of Clini. 3. nalyzer calibration, operation and maintenance. 2. different biochemical detection of analyzers for test and evaluational. (2) rounds and the third stage of consultation Web twice a week to attend medical ... To know: 1. automatic biochemical Assiontests, Clinical Hematology laboratory, clinical microbiology testing, inspection and emergency blood transfusion test 7 Profe certificate. Third stage: laboratory continues to rotate clinical laboratory testing, clinical chemistry, Clinical Immunologypractitioner examination practitioner specificreactive protein (CRP), serum Widal reaction, outside Pei, and cold agglutination test, -Streptococcus hemolytic pigment "o" (AS O), c-nsect, and rubella virus, and giant cell virus, and simple herpes virus antibody check (TORCH test) (5) other class: antimitochondrial antibody, and rheumatoid factor (RF) (4) virus antibody: bow i-double chain DNA antibody (AdsDNA), and anti-nuclear antibody (ANA), and anti-and IgM, and IgD, and IgE), fill body determination (C3, and C4), t lymphocytes Asia group, and anti like cell cancer related Antigen ( SCC) (3) immune function: immune globulin determination (IgG, and IgA,-5), and prostate specific antigen (PSA), and p-5 (CA12-9), and sugar Antigen 12-9 (CA19-10 ?焊接生产线是指必须经过焊接工艺才能完成完整产品的综合生产线，其中必然包括专用焊接设备(专机、机器人等)、辅助工位设备(工艺装备、辅助器具等)以及各种传输装置; ?两种常见的装焊生产线:贯通式装焊生产线、环行装焊生产线、转台式装焊生产线等。 2)简述采用点焊机器人的主要优点; ?机器人动作是可编程序的，改型生产的适应性好; ?不仅代替了人工操作，而且解决了一些人工不易操作的部位的焊接，节省人力，提高自动化程度; ?焊点质量稳定，焊点点距规则; 第十二章答案 1(名词 1)工程过程控制(EPC): 对于一个系统检测量，它有一个明确并且恒定的界限，当检测量超出该控制界限时系统即可报警。 2)统计过程控制(SPC):是指系统检测量没有恒定西的控制界限，需要从检测量的历史历史测量数据中计算出当前的控制界限来判断系统是否失控。 3) 2mm工程:所有白车身的关键检测点的波动值要小于2mm; 2(简述题 1)汽车焊接夹具与其他夹具相比，有那些特殊性。 ?定位元件形面复杂 精度要求高 ? ?设计制造难度大; ?一般是采用独立的定位部件安装在整体底版上; ?夹具定位理论复杂; 2)采用“N-2-1”定位原理怎么减少夹具引起偏差。 车身零件多数是薄板零件，采用3-2-1定位原则由于薄板零件变形问题通常不能满足定位要求，因此需要在定位面上采用N(大于3，通常4~6)个定位点来实现定位准确; 3(综合应用 1)试分析常见影响白车身装焊尺寸形状偏差主要因素，目前各汽车制造厂白车身质量主要采用什么测量方法，质量控制技术主要方法有哪两种。 白车身装焊尺寸形状偏差产生主要因素: ?操作的影响; ?焊接夹具的影响; ?冲压件尺寸偏差; ?焊接变形; 目前常用测量方法:三坐标检测 质量控制技术主要分析方法:工程过程控制和统计过程控制 -real: methyl tire protein (AFP), and cancer embryo Antigen (CEA), and sugar Antigen 15 logo n (HBsAg, and HBsAb, and HBeAg, and HBeAb, and HBcAb), and hepatitis a and hepatitis c virus antibody determination (2) tumorof reports and clinical significance of routine testing. (1) hepatitis logo real: hepatitis b serum logo real of determinatio related projects, the results-ological specimens. (E) professional master of Clinical Immunology test: 1. Clinical Immunologymical detection of analyzers for test and evaluation. 3. the core collection, preservation and processing of all kinds of biiocheto attend medical ... To know: 1. automatic biochemical Analyzer calibration, operation and maintenance. 2. different b spection and emergency blood transfusion test 7 Professional. (2) rounds and the third stage of consultation Web twice a weeklinical chemistry, Clinical Immunology tests, Clinical Hematology laboratory, clinical microbiology testing, inpractitioner examination practitioner certificate. Third stage: laboratory continues to rotate clinical laboratory testing, cWidal reaction, outside Pei, and cold agglutination test, specificreactive protein (CRP), serum -Streptococcus hemolytic pigment "o" (AS O), c-irus antibody check (TORCH test) (5) other class: antibody, and rheumatoid factor (RF) (4) virus antibody: bow insect, and rubella virus, and giant cell virus, and simple herpes vmitochondrial anti-double chain DNA antibody (AdsDNA), and anti-nuclear antibody (ANA), and anti-t lymphocytes Asia group, and antiune function: immune globulin determination (IgG, and IgA, and IgM, and IgD, and IgE), fill body determination (C3, and C4), like cell cancer related Antigen ( SCC) (3) imm-5), and prostate specific antigen (PSA), and p-5 (CA12-9), and sugar Antigen 12-9 (CA19-3), and sugar Antigen 19-3 (CA1511