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  • 液压热熔焊机 - 时间的确定Determination of time
  • 本站编辑:杭州先创热熔设备厂发布日期:2017-02-04 16:44 浏览次数:
 “ 加热时间的确定:焊接端面平整后10×壁厚(mm)秒Determination of heating time: 10 * thickness (mm) seconds after the end of welding.
 
  加热时间的长短,决定焊接的质量;是否能将温度均匀传递到焊接面及一定的深度,在转换的阶段保持比较佳的焊接温度。管端面熔化的比较佳时间,是随着需要加热的面积增大而增大的,更重要的是对流和辐射传播的能量,会随着管壁厚度的增加而减小。管端面的不平度,造成热量的传递不均匀,窝藏空气,产生气孔,比较终影响焊接质量,所以需要和压力密切的配合,在加热的同时施加一定的压力,平整焊接面,促进塑化,形成理想的焊接面进行热传递,然后降压吸热。
"The length of heating time determines the quality of the welding; whether the temperature can be evenly transferred to the welding surface and a certain depth, in the conversion phase to maintain the best welding temperature. The best time to melt the end of the tube increases with the increase of heating area, and more importantly, the energy of con
vection and radiation decreases with the increase of the wall thickness. Pipe surface roughness, caused by uneven heat transfer, harboring air, blowhole, ultimately affects the welding quality, so it is necessary to pressure and close cooperation with exert pressure while heating the smooth welding surface to improve plasticizing and forming ideal welding surface for heat transfer, and buck endothermic.
   

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