xxx體育館網架工程施工組織設計.doc
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制孔
螺紋孔及平面加工應按銑平面→鉆螺紋底孔→倒角→絲錐攻螺紋過程加工，螺紋孔經抗拉強度檢驗合格后方能安裝使用，螺栓球標記打在基準孔平面上。
加工螺紋孔及平面設備：使用加工中心機床或采用車、鉆、鏜、銑床配以專用工裝，所用的專用工裝，其轉角誤差不得大于10'。
螺紋孔及平面采用一次裝夾加工，采用分工序加工時，必須有可靠的
銑削平面：設計圖規定的削平面數值不作測量用，而保證球中心至球平面距離尺寸精度。
焊接要求
2、操作工藝：
⑴、焊條使用前，必須按照質量證明書的規定進行烘焙，低氫型焊條經過烘焙后，應放在保溫箱內隨用隨取。
⑵、首次采用的鋼種和焊接材料，必須進行焊接工藝性能和物理性能試驗，符合要求后才采用。
⑶、多層焊接應連續施焊，其中每一層焊道焊完后應及時清理，如發現有影響焊接質量的缺陷，必須清除后再焊。
⑷、要求焊成凹面的貼角焊縫，可采用船位焊接
System holes
Threaded hole and the plane processing should be threaded bottom hole drilling milling plane → → → chamfering processing tap tapping procedure, the tensile strength test screw hole after passing through can only installation, bolt holes in the base hit the ball marker plane.
Threading hole and surface equipment: machine tools or machining centers used by trucks, drilling, boring, milling accompanied by special tooling, special tooling used, the angle error is no larger than 10 '.
Threaded hole and a clamping surface processing by using the sub-process machining, there must be reliable
Milling plane: Plane cut under design value without measurement, and ensure that the horizontal distance between the ball center to ball size precision.
Welding requirements
2, the operation process:
⑴, electrodes before use, a certificate must be in accordance with the provisions of baking quality, low-hydrogen type electrode after baking, it should be placed in an incubator with the use with the check.
⑵, first used in steel and welding materials, welding technology and the need for the physical performance test, to meet the requirements before using.
⑶, multi-layer welding should be continuous welding operation, each layer of weld metal should be cleared up After welding, the welding quality is found You Yingxiang defects must be removed before welding.
⑷, required welding paste into the concave fillet weld, welding can be used ship's position