钢筋电渣压力焊工艺标准技术交底.doc

交底内容：
钢筋电渣压力焊工艺标准
1 范围
  本工艺标准适用于工业与民用建筑现浇钢筋混凝土结构中直径14—40mm的I—Ⅱ级竖向或斜向(倾斜度4：1范围内)钢筋的连接。
2 施工准备
2.1 材料及主要机具：
2.1.1 钢筋：钢筋的级别、直径必须符合设计要求，有出厂证明书及复试报告单。进口钢筋还应有化学复试单，其化学成分应满足焊接要求，并应有可焊性试验。
2.1.2 焊剂
2.1.2.1焊剂的性能应符合GB5293碳素钢埋弧焊用焊剂的规定。焊剂型号为HJ401，常用的为熔炼型高锰高硅低氟焊剂或中锰高硅低氟焊剂。
2.1.2.2 焊剂应存放在干燥的库房内，防止受潮。如受潮，使用前须经250—300℃烘焙2h。
2.1.2.3 使用中回收的焊剂，应除去熔渣和杂物，并应与新焊剂混合均匀后使用。
2.1.2.4 焊剂应有出厂合格证。
2.1.3 主要机具
2.1.3.1 手工电渣压力焊设备包括：焊接电源、
Cards on the table contents:
Standard steel bar electroslag welding process
1 Scope
  This technology is applicable to industrial and civil place reinforced concrete structure of 14-40mm diameter I-Ⅱ level vertical or diagonal (4:1 gradient range) reinforced the connection.
2 construction preparation
2.1 Materials and main equipment:
2.1.1 Reinforcement: steel grade, diameter and must meet the design requirements, with a factory certificate and re-testing report card. Imports of steel should have the chemical re-testing one of its chemical composition should meet the welding requirements, and should solderability test.
2.1.2 Flux
2.1.2.1 flux performance should conform to GB5293 submerged arc welding of carbon steel requirements. Flux model HJ401, commonly used for the smelting of high manganese and high silicon-based low-fluoride flux or low in manganese and high silicon fluoride flux.
2.1.2.2 flux should be stored in dry warehouse, to prevent moisture. Such as moisture, subject to 250-300 ℃ before use baking 2h.
2.1.2.3 Use of recycled flux, slag, and debris should be removed, and should be mixed with the new flux before use.
2.1.2.4 Flux should have factory certification.
2.1.3 Main equipment
2.1.3.1 Manual electroslag welding equipment including: welding power supply,