T/DASIV004-2025 ICS号25.160.10 CCS号C3311 团体标准 T/DASIV004-2025 _______________________________________________________________________________ 中重型热轧H型钢焊接技术规程 Recommendedweldingprocessspecificationformediumandheavyduty hot-rolledH-shapedsteel 2024-11-14发布 长三角钢铁产业发展协会发布2025-12-01实施 ³¤Èý½Ç¸ÖÌú²úÒµ·¢Õ¹Ð­»á±ê×¼»¯¼¼ÊõίԱ»á ³¤Èý½Ç¸ÖÌú²úÒµ·¢Õ¹Ð­»á±ê×¼»¯¼¼ÊõίԱ»á ³¤Èý½Ç¸ÖÌú²úÒµ·¢Õ¹Ð­»á±ê×¼»¯¼¼ÊõίԱ»á 全国团体标准信息平台 T/DASIV004-2025 目次 前言.........................................................................................................................................I 1范围........................................................................................................................................1 2规范性引用文件....................................................................................................................1 3术语和定义............................................................................................................................1 4H型钢分类、尺寸及表示方法.............................................................................................1 5一般要求................................................................................................................................2 5.1人员.................................................................................................................................2 5.2焊前准备.........................................................................................................................2 5.3焊接要求.........................................................................................................................3 5.4钢结构设计标准.............................................................................................................3 5.5焊缝质量等级要求.........................................................................................................3 5.6工程实验要求.................................................................................................................4 5.7焊缝连接结构要求.........................................................................................................4 5.8材料要求.........................................................................................................................6 5.9焊接工艺文件.................................................................................................................6 6焊缝连接计算........................................................................................................................6 6.1对接焊缝或对接与角接组合焊缝强度计算.................................................................6 6.2直角角焊缝强度计算.....................................................................................................6 6.3斜角角焊缝厚度计算.....................................................................................................7 6.4部分熔透的对接焊缝和T形对接与角接组合焊缝的强度计算................................7 6.5圆形塞焊焊缝和圆孔或槽孔内角焊缝的强度计算.....................................................8 6.6角焊缝的搭接焊缝连接计算.........................................................................................8 6.7焊接截面工字形梁翼缘与腹板的焊缝连接强度计算.................................................8 7焊接........................................................................................................................................8 7.1焊前预热和道间温度.....................................................................................................9 7.2焊接工艺要求.................................................................................................................9 7.3焊后的处理.....................................................................................................................9 8未来展望..............................................................................................................................10 附录A（资料性）焊接工艺指导书......................................................................................11 附录B（资料性）焊接记录表..............................................................................................12 ³¤Èý½Ç¸ÖÌú²úÒµ·¢Õ¹Ð­»á±ê×¼»¯¼¼ÊõÎ