k钢筋焊接施工方案.doc

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1、焊接施工 54/541、工程概况及工程量1.1本工程钢筋制作、安装过程中钢筋的连接方式：直径大于22的按图纸设计要求直螺纹连接；22以下的采用闪光对焊；预埋铁件锚筋与钢板、角钢等型钢的连接件采用电弧焊。钢筋采用I、II级钢（HPB235、 HRB335），焊条采用E4303、E5015型等。1.2、编制依据1.2.1、华能鹤岗发电有限公司二期工程施工组织设计1.2.2钢筋焊接及验收规程JGJ18-2003、J253-20031.2.3火电施工质量检验及评定标准1.2.4焊工技术考核规程DL/T679-19991.2.5电力建设安全工作规程DL50091-20022、作业准备工作及条件2.1、作

2、业人员的质量2.1.1施工人员要求能从事建筑作业且身体健康。2.1.2、所有施工人员必须通过三级安全教育，具有较强的安全意识。2.1.3、所有施工人员施工前必须经过技术安全交底，方可进入施工现场，应具有较强的质量意识。2.1.4、参加作业人员应进行职业道德教育，有较强的敬业精神。2.1.5、参加作业的焊工必须持有相应项目的有效焊工合格证书。2.1.6、焊工应有良好的工艺作风，严格按照规定的焊接工艺施焊，注意作业过程中相互配合；并认真实行质量自检同时做好自检记录及标识。2.1.7、所有操作人员服从统一指挥、统一调度。2.1.8焊接施工领导小组成员及其主要职责职务姓名主要职责组长丁建华负责工地焊接

3、施工的全面领导工作副组长丁明生负责焊接施工方案的组织落实贯彻工作组员陈立新负责焊接施工方案的编制、交底工作组员焦 波负责焊接施工资料工作组员丁建峰负责焊接施工质量检查工作组员焦 波负责施工材料的检验工作组员胡林川负责施工用电的保证及安全用电组员陈平虎负责施工的安全及文明施工检查工作组员王群祥负责施工材料、物资的质量，以及材料的及时供应2.2、施工主要机具、工具及材料计划名 称型号（规格）单位数量硅整流直流弧焊机ZX6-400台2电焊钳300A把4焊接电缆35mm2米350电焊面罩只4打焊皮锤把4钢丝刷把10对焊机UN1-150个12.3、焊接材料的领用及保管施工作业人员领用电焊条时必须持有领用

4、单进行领用并做好记录，电焊条的存放必须放置在货架上，焊条的种类要分类摆放，离墙和地面不小于300mm，要配备烘干箱，室内配有干湿温度计,湿度应控制在60%以下,进行施焊时焊条要放置在保温筒内。焊后要作好焊条头的回收工作。3、作业程序及作业方法3 1、施工顺序：电弧焊施工流程见下图：点焊原材下料、划线清除焊缝药皮焊接检查校正铁件变形校正、打磨磨外观自检验收防腐处理3.2、施工现场布置：焊接作业区应有专用场地，电弧焊焊接场地应设置钢平台，钢筋焊接作业区应塔设防雨棚。3.3、作业方法3.3.1预埋件电弧焊施工：在钢筋焊接前应进行现场条件下的模拟焊接试样，并进行试验，试验合格后方可正式进行焊接。钢筋焊

5、接施工前，应清除钢筋或钢板接触部位表面上的锈斑油污、杂物等；钢筋端部若有弯曲时，应予以矫直或切除。焊接前先在钢板上用石笔划出锚筋的位置，然后进行点焊使钢筋固定，校正锚筋与钢板是否垂直，校正无误后进行焊接。施焊过程中应特别注意接头和收弧的质量，收弧时应将弧坑填满，层间的熔渣和飞溅应清理干净，发现缺陷应及时铲除重新焊接。埋件焊好后进行外观检查，如有弯曲、变形进行校正打磨，使之表面光滑平整。涂刷防锈漆后进行编号（用记号笔标明工程部位、标高等）、存放。3.3.2、钢筋闪光对焊的施工钢筋闪光对焊的过程为一次闪光预热，二次闪光及顶锻过程，施焊时首先闪光使钢筋端部闪平，然后使两根钢筋端面交替地接触和分开，这

6、时钢筋端面的间隙中即发出断续闪光，而形成预热过程。当钢筋达到预热温度进入闪光阶段，随后顶锻而成。4. 作业的质量要求及施工验收标准4.1主要施工工艺要求4.1.1闪光对焊参数及主要施工工艺4.1.1.1调伸两钢筋端部从电极口伸出的长度，闪光留量应使闪光过程结束时钢筋端部的热量均匀；闪光速度由慢到快开始时近于零，而后约1mm/s，终止时达到1.5-2mm/s；顶锻留量应使钢筋焊口完全合并并产生一定的塑性变形。顶锻速度越快越好，特别是顶锻开始的0.1s应将钢筋压缩2-3mm，使焊口迅速闭合不致氧化，而后断电并以6mm/s的速度继续顶锻至结束，顶锻压力应足以使全部的熔化金属从接头内挤出。闪光对焊钢筋

7、上限直径参数表：焊机容量钢筋牌号钢筋直径（mm）160（150）HPB235HRB3352022100HPB235HRB335201880（75）HPB235HRB33516144.1.2电弧焊的主要施工工艺4.1.2.1预埋铁件采用贴角焊时焊缝厚度：HPB235级钢筋不得小于0.5d；HRB335级钢筋不得小于0.6d。4.1.2.2施焊过程中，电流不宜过大，不得使钢筋咬边和烧伤。4.1.3为了保证预埋铁件的外表工艺，预埋铁件钢板的四角部位倒角30*30mm，柱梁侧面埋铁与摸板采用模板钻孔、12螺栓连接固定。4.1. 4当环境温度低于-20时，不宜进行各种焊接。4.1.5雨天、雪天不宜在现场

8、露天进行施焊，必须施焊时，应采取有效的遮蔽措施。焊后未冷却接头不得碰到冰雪。4.1.6在现场进行闪光对焊或电弧焊，当风速超过7.9m/s时，应采取挡风措施。4.1.7施焊前应作模拟试件,经试验合格后才能进行施工。4.2、质量标准焊缝外观和内部质量标准执行火电施工质量检验及评定标准及电力建设施工及验收技术规范和钢筋焊接及验收验收规程4.3、质量检验要求：项目检验应分级，严格按三级检验四级验收制度执行。4.4、电弧焊质量标准应符合以下要求：4.4.1、焊缝表面平整圆滑。4.4.2、焊接区域不得有裂纹；锚筋间距偏差不得大于10mm；钢筋相对钢板的直角偏差不得大于3度；咬边深度不得超过0.5mm。4.

9、5、闪光对焊质量标准应符合以下要求：4.5.1、同一焊接参数完成300个同类型接头为一批次，不足300也按一个批次进行取样试验。4.5.2、外观检查：接头不得有横向裂纹；与电极接触面不得有烧伤；接头处弯折不得大于3度；接头处钢筋轴线偏移不得大于钢筋直径的0.1倍，且不大于2mm。4.6.、焊接质量通病的防治：4.6.1钢筋咬边和烧伤，施焊中，电流不宜过大，严格执行焊接参数。4.6.2焊机应经常维护保养和定期检修，确保正常状态下使用。4.7、闪光对焊的质量控制点序号质 量 通 病预 防 措 施一烧化过分剧烈并产生强烈的爆炸声1. 降低变压器级数2. 减慢烧化速度二闪光不稳定1. 消除电极底部和表

10、面的氧化物2. 提高变压器级数3. 加快烧化速度三接头中有氧化膜，未焊透或夹渣1. 增加预热程度2. 加快临近顶锻时的烧化速度3. 确保顶锻压力4. 加快顶锻速度5. 增大顶锻压力四接头中有缩孔1. 降低变压器级数2. 适当增大顶锻压力五焊缝金属过烧1. 减小预热级数2. 加快烧化速度，缩短焊接时间六钢筋表面微熔及烧伤1. 清除钢筋上铁锈和油污2. 清理电极3. 夹紧钢筋七接头弯折或轴线偏移1. 调整电极位置2. 修整或更换电极3. 检查钢筋是否弯头4.8预埋铁件手工电弧焊质量控制点序号质 量 通 病预 防 措 施一焊缝表面裂纹焊完后肉眼认真检查二钢筋咬边1. 施焊时严格控制焊机电流2. 焊完

11、后认真检查三钢筋位置、角度偏差1. 施焊前划线准确2. 焊完后认真复查5、安全防护和文明施工标准及措施5.1、安全及文明施工保证措施5.1.1、施工前应对所有参加特殊作业的人员进行安全技术交底,养成良好的工作习惯，杜绝随手抛，随地掷的恶习，增强自身的安全意识，并有针对性的进行安全教育，突出重点。每班工作前，班组长均应交待清楚本班安全注意事项及危险点。5.1.2、电焊机电源线不得破损，防止拖拽中产生弧光，影响工艺和刺伤眼睛。5.1.3、进入施工现场必须戴好安全帽，穿软底鞋。身体不适或酒后不得进入施工现场。高处作业必须系安全带，安全带必须挂在腰部以上牢靠的部位。5.1.4、焊接作业过程中必须遵守安

12、全、环保、防火等规程的有关规定。5.1.5、进入施工现场必须遵守现场的安全管理规定。5.1.6、焊机应可靠接地，电缆无破损，接头处应用绝缘胶布扎好，电焊皮线走向应有条理。5.1.7、施工过程中，必须注意并检查作业点周围的情况，有危及安全的情况时，必须采取积极的防护措施。5.1.8、作业完成后，及时清理现场焊条头（严格遵守焊条头回收制度），做到“工完、料尽、场地清”。5.1.9、作业完成后，应切断电源，检查周围确认无起火危险后方可离开。5.1.10、施工现场严格遵守 各项规章制度。做到不乱倒垃圾，不影响工地周围的卫生。5.1.11、对施工现场的环境卫生应经常清理，确保环境的卫生、整洁。5.1.1

13、2、作业人员必须配备好必要的劳动防护用品。6、施工危险因素和环境因素辨识控制表序号 危险点描述 拟采取危险控制措施 控 制实施部门实施人监测部门监测人方法时机方法时机1施焊人员不戴防护用品,可能发生灼伤眼睛和烧伤手作业人员应配戴防护眼镜和全皮手套A、SD班组夏沙民安全科陈平虎2电机不做接地,可能发生电机漏电，触电事故电机应做好接地保护，电源箱应安装漏电保护器SD班组胡林川安全科陈平虎3作业区无防火器材,可能发生火灾事故作业区内消防器材应配备齐全，并有防火措施AD班组夏沙民安全科丁国民4焊机露天放置,可能发生触电事故应搭设防雨棚，防止电机受潮漏电 AD班组夏沙民安全科陈平虎5电焊工作台无接地,可

14、能发生触电事故应做好接地措施，雨天施焊时脚下应垫干燥的木板或采取其它防止触电措施。A、SD班组夏沙民安全科陈平虎6用钢筋或钢管作二次线,可能发生触电事故采用塑料铝线作为二次线RD班组夏沙民安全科陈平虎7倒换电机接头、转移作业地点、焊工离开作业场所时不关闭电源,可能发生触电事故关闭电源后再进行以上几种作业。WD班组胡林川安全科丁国民注： 控制方法： S：连续监护； A：提醒； R：记录确认。 控制时机： D：每天至少一次； （英文版 ） Two regulations promulgated for implementation is in the party in power for a lo

15、ng time and the rule of law conditions, the implementation of comprehensive strictly strategic plan, implementation in accordance with the rules and discipline to manage the party, strengthen inner-party supervision of major initiatives. The two regulations supporting each other, the adhere to a pos

16、itive advocate, focusing on morality is of Party members and Party leading cadres can see, enough to get a high standard; around the party discipline, disciplinary ruler requirements, listed as negative list, focusing on vertical gauge, draw the party organizations and Party members do not touch the

17、 bottom line . Here, the main from four square face two party rules of interpretation: the first part introduces two party Revised regulations the necessity and the revision process; the second part is the interpretation of the two fundamental principles of the revision of laws and regulations in th

18、e party; the third part introduces two party regulations modified the main changes and needs to grasp several key problems; the fourth part on how to grasp the implementation of the two regulations of the party. and revised the necessity and revised history of the CPC Central Committee the amendment

19、 to the Chinese Communist Party members and leading cadres honest politics several guidelines and column 1 by 2015 to strengthen party laws and regulations focus. Two party regulations revision work lasted a Years, pooling the wisdom of the whole party, ideological consensus, draw historical experie

20、nce, respect for the wisdom of our predecessors, which reflects the unity of inheritance and innovation; follow the correct direction, grasp the limited goals, adhere to the partys leadership, to solve the masses of the people reflect a focus on the problem. The new revision of the and , reflects th

21、e partys 18 and the eighth session of the third, the spirit of the fourth plenary session, reflecting the experience of studying and implementing the General Secretary Xi Jinping series of important speech, reflects the partys eighteen years comprehensive strictly practice. (a) revised two regulatio

22、ns of the party need of in based on revised, the promulgation and implementation of January 2010, to strengthen the construction of the contingent of leading cadres play an important role. But with the party to manage the party strictly administering the deepening, has not been able to fully meet th

23、e actual needs. Content is too complicated, eight prohibition, 52 are not allowed to hard to remember, and also difficult to put into practice; the second is concisely positive advocated by the lack of prohibited provisions excessive, no autonomy requirements; the third is banned terms and disciplin

24、e law, both with the party discipline, disciplinary regulations repeat and Criminal law and other laws and regulations repeat; the fourth is to clean the theme is not prominent, not for the existing problems, and is narrow, only needle of county-level leading cadres above. is in 1997 based on revisi

25、on, in December 2003 the promulgation and implementation, to strengthen the construction of the party play very important role. Along with the development of the situation, which many provisions have been unable to fully meet the comprehensive strictly administering the practice needs. One is Ji law

26、, more than half of the provisions and criminal law and other countries laws and regulations Repetition; two is the political discipline regulations is not prominent, not specific, for violation of the party constitution, damage the authority of Party Constitution of misconduct lack necessary and se

27、rious responsibility to pursue; third is the main discipline for the leading cadres, does not cover all Party members. Based on the above situation, need to and the two is likely to be more relevant regulations first amendment. By revising, really put the authority of Party discipline, the seriousne

28、ss in the party tree and call up the majority of Party members and cadres of the party constitution of party compasses party consciousness. (II) two party regulations revision process the Central Committee of the Communist Party of China attaches great importance to two regulations revision . Xi Jin

29、ping, general books recorded in the Fifth Plenary Session of the eighth session of the Central Commission for Discipline Inspection, on the revised regulations made clear instructions. According to the central deployment, the Central Commission for Discipline Inspection from 2014 under six months be

30、gin study two regulations revision. The Standing Committee of the Central Commission for Discipline Inspection 4 review revised. Comrade Wang Qishan 14 times held a special meeting to study two regulations revision, amendment clarifies the direction, major issues of principle, path and target, respe

31、ctively held a forum will listen to part of the province (area) secretary of the Party committee, Secretary of the Discipline Inspection Commission, part of the central ministries and state organs Department The first party committee is mainly responsible for people, views of experts and scholars an

32、d grassroots party organizations and Party members. Approved by the Central Committee of the Communist Party of China, on 7 September 2015, the general office of the Central Committee of the Party issued a notice to solicit the provinces (autonomous regions, municipalities) Party, the central minist

33、ries and commissions, state ministries and commissions of the Party (party), the General Political Department of the military, every 3 people organization of Party of two regulations revision opinion. Central Commission for Discipline Inspection of extensive solicitation of opinions, careful study,

34、attracting, formed a revised sent reviewers. In October 8 and October 12, Central Committee Political Bureau Standing Committee and the Political Bureau of the Central Committee After consideration of the two regulations revised draft. On October 18, the Central Committee of the Communist Party of C

35、hina formally issued two regulations. Can say, two laws amendment concentrated the wisdom of the whole party, embodies the party. Second, and revision of the basic principles of two party regulations revision work and implement the partys eighteen, ten eight plenary, the spirit of the Fourth Plenary

36、 Session of the Eleventh Central Committee and General Secretary Xi Jinping important instructions on the revised and , highlighting the ruling party characteristics, serious discipline, the discipline quite in front of the law, based on the current, a long-term, advance as a whole, with Bu Xiuding

37、independent and . Main principle is: first, adhere to the party constitution to follow. The constitution about discipline and self-discipline required specific, awaken the party constitution of party compasses party consciousness, maintaining the authority of the constitution. General Secretary Xi J

38、inping pointed out that no rules, no side round. Party constitution is the fundamental law, the party must follow the general rules. In early 2015 held the eighth session of the Central Commission for Discipline Inspection Fifth Plenary Session of the 16th Central Committee, Xi Jinping again pointed

39、 out that constitution is the party must follow the general rules, but also the general rules. the revision of the and is Method in adhere to the regulations established for the purpose of combining rule of virtue is to adhere to the party constitution as a fundamental to follow, the constitution au

40、thority set up, wake up the party constitution and party rules the sense of discipline, the party constitution about discipline and self-discipline specific requirements. 4 second is to adhere to in accordance with the regulations governing the party and the party. The Party of rule of virtue de, ma

41、inly refers to the partys ideals and beliefs, excellent traditional style. The revised the closely linked to the self-discipline, insisting on the positive initiative, for all members, highlight the vital few, emphasized self-discipline, focusing on the morality, and the majority of Party members an

42、d the ideological and moral standards. The revised Ji method separately, Ji, Ji Yan to Method, as a negative list, emphasizing the heteronomy, focusing on vertical gauge. Is this one high and one low, a positive reaction, the strict party discipline and practice results transformation for the integr

43、ation of the whole party to observe moral and discipline requirements, for the majority of Party members and cadres provides benchmarking and ruler. Third, insist on to. In view of the problems existing in the party at the present stage, the main problems of Party members and cadres in the aspect of

44、 self-discipline and abide by the discipline to make clearly defined, especially the partys eighteen years strict political discipline and political rules, organization and discipline and to implement the central eight provisions of the spirit against the four winds and other requirements into Disci

45、plinary provisions. Not one pace reachs the designated position, focusing on in line with reality, pragmatic and effective. After the revision of major changes, major changes in the and modified and needs to grasp several key problems (a) adhere to according to regulations governing the party and party with morals in combination, for at the present stage, the leadership of the party members and cadres and Party members in e