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1、赵家园商品房二期工程一标段钢筋焊接工艺评定（14、16）编 制 : 审 核 : 批 准 : 河南城建建设集团赵家园项目部2012年4月10日目录1. 目的2. 适用范围3. 依据性文件4. 焊接工艺5. 文件提供1、目的：为确保赵家园商品房二期工程一标段钢筋现场接头的施工质量满足设计国家规范要求，对其焊接接头进行工艺评定试验，判定焊接工艺的可行性和接头的质量效果，从而确定操作工艺规程，特进行工艺评定。2、适用范围：本工艺评定适用于赵家园商品房二期工程一标段施工现场发生的同规格、同型号的钢筋竖向接头的焊接。3、依据性文件3.1 JGJ18-2012 钢筋焊接及验收规程3.2 GB 50204-2
2、002 混凝土结构工程施工质量验收规范4、焊接工艺4.1 焊接工具及材料 焊接工具电弧焊机BX3-630型、焊接夹具、控制箱、铁锤、毛刷 焊接材料待接钢筋（14、16）各6段（每段32cm）、焊剂（HJ431）4.2 工艺 待接钢筋的预处理 接头预拼目测接头是否平直，使用焊接夹具夹紧调直，使用毛刷清理接头截面，保持接头的清洁。电渣压力焊的焊接过程包括四个阶段：引弧过程、电弧过程、电渣过程和顶压过程。 钢筋的焊接 焊接开始时，首先在上、下两钢筋端面之间引燃电弧，使电弧周围焊剂熔化形成空穴；随之焊接电弧在两钢筋之间燃烧，电弧热将两钢筋端部熔化，熔化的金属形成熔池，熔融的焊剂形成熔渣（渣池），覆盖于
3、熔池之上，此时，随着电弧的燃烧，上、下两钢筋羰部逐渐熔化，将上钢筋不断下送，以保持电弧的稳定，继续电弧过程；随电弧过程的延续，两钢筋端部熔化量增加，熔池和渣池加深，待达到一定深度时，加快上钢筋的下送速度，使其端部直接与渣池接触，这时，电弧熄灭而变电弧过程为电渣过程；待电渣过程产生的电阻热使上、下两钢筋的端部达到全截面均匀加热的时候，迅速将上钢筋向下顶压，挤出全部熔渣和液态金属，随即切断焊接电源，完成了焊接工作。4.3 接头的质量检查钢筋电渣压力焊接头应逐个进行外观检查，应符合下列要求： 1.焊包较均匀，突出部分最少高出钢筋表面4mm 2.电极与钢筋接触处，无明显的烧伤缺陷。 3.接头处的弯折角
4、不大于4 4.接头处的轴线偏移应不超过0.l倍钢筋直径，同时不大于2mm。5、文件提供：工艺评定结果、现场见证人员及操作人员签到单、钢筋材质合格证明书、钢筋的复检报告、钢筋连接试验报告。（英文版 ） Two regulations promulgated for implementation is in the party in power for a long time and the rule of law conditions, the implementation of comprehensive strictly strategic plan, implementation in a
5、ccordance 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 positive advocate, focusing on morality is of Party members and Party leading cadres can see, enough to get a high standard
6、; 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 bottom line . Here, the main from four square face two party rules of interpretation: the first part introduces two par
7、ty 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 the party; the third part introduces two party regulations modified the main changes and needs to grasp several key proble
8、ms; 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 to the Chinese Communist Party members and leading cadres honest politics several guidelines and column 1 by 2015 to st
9、rengthen party laws and regulations focus. Two party regulations revision work lasted a Years, pooling the wisdom of the whole party, ideological consensus, draw historical experience, respect for the wisdom of our predecessors, which reflects the unity of inheritance and innovation; follow the corr
10、ect 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 the partys 18 and the eighth session of the third, the spirit of the fourth plenary session, reflecting the experience of
11、studying and implementing the General Secretary Xi Jinping series of important speech, reflects the partys eighteen years comprehensive strictly practice. (a) revised two regulations of the party need of in based on revised, the promulgation and implementation of January 2010, to strengthen the cons
12、truction 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 the actual needs. Content is too complicated, eight prohibition, 52 are not allowed to hard to remember, and also difficul
13、t 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 discipline law, both with the party discipline, disciplinary regulations repeat and Criminal law and other laws and regulations r
14、epeat; 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 revision, in December 2003 the promulgation and implementation, to strengthen the construction of the party play very importan
15、t 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, more than half of the provisions and criminal law and other countries laws and regulations Repetition; two is the politi
