焊接加工规则通用表格.docVIP

　　　　　　焊接加工规则通用表格 Third, general welding process 1 范围 1 scope 本守则规定焊接加工的工艺规则，适用于本公司焊接加工。 The provisions of this code of welding processing craft rules, apply to the company welding processing. 2 焊工 2 welders 2.1焊工必须经过考试并取得合格证后，方可上岗。焊工考试按照JG/T5080.2进行。 2.1 after welder must pass a test and obtain certificate of approval, can mount guard. Welder test shall be carried out in accordance with the JG/T5080.2. 2.2 焊工必须严格遵守焊接工艺规程，严禁自由施焊及在焊道外的母材上引弧。 2.2 welder must strictly abide by rules of welding process, it is forbidden to free welds and the parent metal outside the weld arc. 3 焊前准备 3 welding preparation 3.1 焊接前应检查并确认焊接设备及辅助工具等处于良好状态。 3.1 should check and confirm before welding welding equipment and auxiliary tools in good condition. 3.2 焊接工作尽可能在室内进行，当工件表面潮湿或暴露于雨雪条件下，不得进行焊接作业。 3.2 welding work indoors as much as possible, when the surface moist or exposure to rain or snow conditions, shall not be welding operations. 3.3 焊条、焊剂和药芯焊丝应按产品说明书的规定进行烘干。低氢焊条在施焊前必须进行烘干，烘干温度为350～400℃，时间1～2h。一般在常温下超过4h即重新烘干。酸性焊条一般可不烘干，但焊接重要结构时经150～200℃烘干1～2h。 3.3 welding rod, flux and flux cored wire shall be dried according to regulations of the product specifications. Low hydrogen electrodes in front of the welds must be drying, baking temperature of 350 ~ 400 ℃, time 1 ~ 2 h. Generally more than 4 h at room temperature is to dry. Acid electrode generally dont dry, but when welding the important structures through 150 ~ 200 ℃ drying 1 ~ 2 h. 3.4焊材的选用 3.4 the selection of welding material 钢材 焊条 备注 Q235 E4303 E4315 E4316 重要构件 Q295 E4303 E4315 E4316 重要构件 Q345 E5003 E5015 E5016 重要构件 3.4.2 焊丝、焊剂的选配 钢材 埋弧焊用焊剂-焊丝 CO2气保焊用 焊丝 备注 Q235 Q295 HJ401-H08 HJ401-H08A ER49-1 H08仅用于构造 焊缝 Q345 Q390 HJ402-H08A HJ402-H08MnA HJ402-H10Mn2 ER50-6 ER50-7 ER55 H08仅用于构造 焊缝 3.5 碳素钢板厚大于50mm、低合金钢板厚度大于36mm时，吊车施焊前一般应进行预热至100～150℃，预热区应在焊缝两侧，每侧宽度不应小于焊件厚度的两倍且不小于100mm。 3.6 焊接部位必须进行焊前石英壁布清理、去除铁锈、油污等杂质，重要部位还要求打磨光洁。 4 焊接 4 welding 4.1根据具体情况选用合理的焊接参数进行焊接，不允许超大电流焊接。 4.1 according to the specific