- 液壓熱熔焊機 - 時間的確定Determination of time
- 本站編輯：杭州先創(chuàng)熱熔設備廠發(fā)布日期：2017-02-04 16:44 瀏覽次數：
“ 加熱時間的確定：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.
加熱時間的長短，決定焊接的質量；是否能將溫度均勻傳遞到焊接面及一定的深度，在轉換的階段保持比較佳的焊接溫度。管端面熔化的比較佳時間，是隨著需要加熱的面積增大而增大的，更重要的是對流和輻射傳播的能量，會隨著管壁厚度的增加而減小。管端面的不平度，造成熱量的傳遞不均勻，窩藏空氣，產生氣孔，比較終影響焊接質量，所以需要和壓力密切的配合，在加熱的同時施加一定的壓力，平整焊接面，促進塑化，形成理想的焊接面進行熱傳遞，然后降壓吸熱。
"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 convection 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.
