钢结构熔嘴电渣官焊施工工艺01.doc
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1、1, and prepared according to 1.1, and thermal power engineering started debugging work provides 1.2, and thermal power power plant construction engineering started and the completed acceptance procedures 1.3, and thermal power unit started steam Blowpipe guide is 1.4, and thermal power engineering a
2、djustment try shipped quality test and the evaluation standard 2, and #1 furnace started debugging organization measures and the related provides 2.1, and organization Division: for guarantee wide up thermal power plant #1 furnace started debugging and the part steam machine system of smooth voted s
3、hipped, special established #1 furnace try shipped professional group, members following: leader: Deputy Leader: supervision: crew: wide up try shipped personnel: wide up acceptance personnel: 2.2, and debugging, and try shipped content: boiler auxiliary machine Division debugging electric dust of D
4、ivision try turned and the debugging baking furnace Cook furnace boiler rushed tube, and blow sweep security door check 2.3, and operation provides and the Division: #1 furnace debugging, and try shipped by #1 furnace try shipped professional group requirements for, which single try turned and Divis
5、ion try shipped by xD three company led is responsible for. all moving operation operation must be in strict accordance with the prior authorization of the #1 boiler commissioning professional working group, and after starting, the test command-approved #1 furnace steps in the test programme, event
6、of temporary changes be reported to headquarters approval. commissioning, trial operation process is required for each project by Northwest electric power construction company ready equipment installation records, and fill in the test application form, the a and b sides after passing the checks, fil
7、l in partial commissioning checking before a visa, reported head of the approval, carried out by the leader of unified command. About each action are made by the leader of a unified command, operation after the report to the team leader. Without the Directors consent shall not unilaterally make any
8、startup operation, such as single operations, who is responsible for all security responsibilities, with no ties to the other side. all before the first turn of the motor, must be approved by both parties a common roll insulation measurement can be carried out properly. After the end of each project
9、 commissioning, fill in partial acceptance visa trial shipments. As motor in rotating equipment commissioning test switch and mechanical part of their trial cannot continuously, this is considered two test projects shall be carried out according to the above four steps. 2.4, and attached work votes
10、issued people, and license people, and work head list: party electrical first species, and second species work votes license people list: party engine work votes license people list: b electrical first species, and second species work votes issued people: b hot control professional issued people lis
11、t: b hot control professional work head: b steam machine professional work votes issued people: b steam machine professional work votes head: b boiler professional work votes issued people: b boiler professional work votes head: attached: about personnel of contact phone party b Division 3, boiler a
12、uxiliary equipment debugging scenarios 3.1, send, induced draft fan try turned 3.1.1, try turning the former requirements of: 3.1.1.1, fan body and motor installed, based the second Grouting ends, and the concrete strength is up. 3.1.1.2, coupling the Centre has finished aligning standards, approved
13、 visa. 3.1.1.3, bearing clearance normal outer rims and bearing clearance is up to standard. 3.1.1.4, Benton . Condition. 5.1.3, oven starts all range of comprehensive systems have been installed, grate, delivery, fan and slag machine to try to transfer a qualified acceptance and visas. 5.1.4, boile
14、r pressure parts, body pipe all installed, water pressure test and acceptance of visa. 5.1.5, thermal, electrical and instrument installation, single school qualified to simulate joint school qualified, ready to operate. 5.1.6, furnace wall masonry and pipe insulation, corrosion protection all over,
15、 and acceptance. Boiler air and flue gas ducts clean, clutter-free, external oven site has been cleaned up. 5.1.7, ESP installation completion and acceptance of visa, water-film dust collector completes the installation of approved第八章 熔嘴电渣焊焊接工艺适用范围:本工艺适用于钢结构制作熔嘴电渣焊焊接工艺。工艺规定了一般低碳钢、普通低合金钢的熔嘴电渣焊的基本要求。凡
16、各工程的工艺中无特殊要求的结构件的熔嘴电渣焊均应按本工艺规定执行。第一节 材料要求8.1.1钢材及焊接材料应按施工图的要求选用,其性能和质量必须符合国家标准和行业标准的规定,并应具有质量证明书或检验报告。如果用其它钢材和焊材代换时,须经设计单位同意,并按相应工艺文件施焊。8.1.2按指定焊丝的牌号和规格使用。第二节 主要机具表8.2.1.1 焊接用机械设备表设备名称设备型号数 量单位备注电动空压机根据工程实际情况确定根据工程实际情况确定台碳弧气刨用焊剂烘干机台烘干焊条柴油发电机台应急使用焊接滚轮架台烘干焊条翼缘矫正机台型钢校正表8.2.1.2 工厂加工检验设备、仪器、工具表备名称设备型号数 量
17、单位备注超声波探伤仪根据工程实际情况确定根据工程实际情况确定台检查焊缝内部缺陷数字温度仪台测量层间温度数字钳形电流表个测量焊接电流温湿度仪个测量空气湿度焊缝检验尺把检验焊缝外观尺寸磁粉探伤仪台测量焊缝内部尺寸游标卡尺把测量焊缝外观尺寸钢卷尺把测量第三节 作业条件8.3.1熔嘴电渣焊不允许露天作业。当气温低于0。C,相对湿度大于或等于90%,网路电压严重波动时不得施焊。8.3.2焊接区应保持干燥、不得有油、锈和其它污物。8.3.3熔嘴电渣焊焊剂在使用前应按产品说明书规定的烘焙时间和烘焙温度进行烘焙,不得含灰尘、铁屑和其他杂物。烘干温度一般为250。C 2小时。8.3.4熔嘴孔内受潮,生锈或沾有污
18、物时不得使用。8.3.5熔嘴不应有明显锈蚀和弯曲,用前250。C 1小时烘干,在80。C左右存放和待用。8.3.6焊丝的盘绕应整齐紧密,没有硬碎弯、锈蚀和油污。焊丝盘上的焊丝量最少不得少于焊一条焊缝所需焊丝量。8.3.7所有焊机的各部位均应处于正常工作状态。8.3.8焊机的电流表、电压表和调节旋钮刻度指数的指示正确性和偏差数要清楚明确。8.3.9保证电源的供应和稳定性,避免焊接中途断电和网压波动过大。8.3.10施焊前,焊工应复核焊接件的接头质量和焊接区域的坡口、间隙、钝边等的处理情况。当发现有不符合要求时,应修整合格后方可施焊。焊接连接组装允许偏差值见表8.3.10.1的规定。表8.3.10
19、.1焊接连接组装允许偏差值第四节 施工工艺8.4.1工艺流程拼装焊接校正 二次下料制孔装焊其它零件校正打磨打砂油漆搬运贮存运输8.4.2 操作工艺1 施焊前,检查组装间隙的尺寸,装配缝隙应保持在1mm以下,当缝隙大于1mm时,应采取措施进行修整和补救。2 检查焊接部位的清理情况,焊接断面及其附近的油污、铁锈和氧化物等污物必须清除干净。3 焊道两端应按工艺要求设置引弧板和熄弧板。4 安装管状熔嘴并调整对中,熔嘴下端距引弧板底面距离一般为1525mm。5 焊接电流的选择可按下述经验公式进行计算:I = K F式中:I 平均焊接电流,A; F 管状熔嘴截面积,mm2; K 比例系数,一般取57。6
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