欢迎来到青岛自由人金属材料有限公司官网!

登录|注册 收藏自由人钢材|在线留言|站点地图

青岛自由人钢材市场青岛自由人钢材市场

全国服务热线:

400-0532-086
微信微博

热门关键词:

资讯默认广告
当前位置:首页 » 自由人资讯 » 钢材小课堂 » 青岛自由人螺纹钢--钢筋分项工程质量控制标准做法!

青岛自由人螺纹钢--钢筋分项工程质量控制标准做法!

文章出处:责任编辑:作者:人气:-发表时间:2015-06-29 08:45:00【

 青岛自由人钢材小编无意中发现有关螺纹钢筋的小知识,现在跟大家分享下哦(免费客服电话:400-0532-086

1、钢筋电渣压力焊                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              电渣压力焊适用于现浇钢筋混凝土结构中竖向或斜向(倾斜度不大于100)钢筋的连接。电渣压力焊接头外观检查结果,应符合下列要求:

、四周焊包凸出钢筋表面的高度:当钢筋直径≤25mm 时,不得小于4mm;当钢筋直径≥28mm时,不得小于6mm

、 钢筋与电极接触处,应无烧伤缺陷;

、接头处的弯折角度不得大于

、接头处的轴线偏移不得大于1mm。不同直径钢筋焊接 时,钢筋直径相差不得超过7mm,两钢筋轴线应在同一直线上,轴线偏移不得大于1mm。接头强度要求按较小钢筋直径计算。

青岛自由人螺纹钢--钢筋分项工程质量控制标准做法!

2、钢筋电弧焊

钢筋电弧焊包括帮条焊 、搭接焊、坡口焊、窄间隙焊和熔槽帮条焊5 种接头型式。

帮条焊、搭接焊时,均宜采用双面焊;当不能进行双面焊时,方可采用单面焊,帮条或搭接长度应符合左下表的规定。

帮条焊接头或搭接焊接头的焊缝厚度S不应小于主筋直径的0.3 倍;焊缝宽度 b不应小于主筋直径的0.8 倍。

帮条焊或搭接焊时,钢筋的装配和焊接应符合下列要求:

、帮条焊时,两主筋端面的间隙应为25mm

、搭接焊时,焊接端钢筋宜预弯,并应使两钢筋的轴线在同一直线上;

、帮条焊 时,帮条与主筋之间应用四点定位焊固定;搭接焊时,应用两点固定;定位焊缝与帮条端部或搭接端部的距离宜大于或等于20mm

、焊接时,应在帮条焊或搭接焊形成焊缝中引弧;在端头收弧前应填满弧坑,并应使主焊缝与定位焊缝的始端和终端熔合。

帮条焊及搭接焊示意图详见下页。

电弧焊接头外观检查结果,应符合下列要求:

、焊缝表面应平整,不得有凹陷或焊瘤;

、焊接接头区域不得有肉眼可见的裂纹;

、焊缝余高应为24mm

、咬边深度、气 孔、夹渣等缺陷允许值及接头尺寸的允许偏差,应符合右下表的规定;

青岛自由人螺纹钢--钢筋分项工程质量控制标准做法!

青岛自由人钢材批发市场官网http://www.qdzyrgc.com

相关资讯