大家（jiā）都了解，焊縫的是（shì）非作出決定了直縫焊管（guǎn）質量的不足，如果直縫焊（hàn）管焊縫形成橋孔（kǒng），那不（bú）單產生相（xiàng）應作用彈道焊縫密切性，導致彈道泄露，並且會轉變為破壞的教育點，重（chóng）要進一步減少焊縫極（jí）限抗拉強度和柔韌。通常（cháng）來說通量正當中（zhōng）潮氣、廢物、液化皮和鐵屑，銲接的（de）成分（fèn）及包含在相應範圍之內厚薄（báo），謄寫鋼版的要樣兒質量還有謄寫鋼版邊板采用相應辦法解決，銲接生產工藝及無縫鋼管（guǎn）有關成型生產工藝等都或許是焊縫形成橋孔的原因。因此，在銲接時，銲接熱度高，則使焊縫過燒，逐漸形成戳穿，包（bāo）括參加的CaF2和SiO2時，會影響（xiǎng）接（jiē）受很多的（de）H2，革命保持穩定性很高且不加以溶於物態非金屬的HF，進而可防止止重氫孔的逐漸形成（chéng）;焊縫的有關成型膨脹係數過小，焊縫的幾何形狀窄而深（shēn），固體和混合物使不得易持（chí）續浮出，易逐漸形成橋（qiáo）孔和夾渣;直縫直縫焊管 謄寫（xiě）鋼版板邊應進行設置鐵鏽和連鬢胡（hú）子需要設（shè）置，以進一步降低形成橋孔的或許。
As we all know, the quality of longitudinal welded pipe depends on the quality of the welded seam. Once the gas hole is produced in the weld of the longitudinal welded pipe, it not only affects the compactness of the pipeline weld and causes the leakage of the pipeline, but also becomes the corrosion induction point, which seriously reduces the strength and toughness of the weld. Generally speaking, the moisture, dirt, oxide scale and iron scraps in flux, the composition and thickness of welding, the surface quality of steel plate, the treatment of steel plate edge, welding process and steel tube forming process may all be the reasons for the porosity in the weld. Therefore, when the welding temperature is high, the welding seam will be overheated and perforated. When the welding seam contains appropriate amount of CaF2 and SiO2, it will react and absorb a large amount of H2 to form HF which is stable and insoluble in liquid metal, thus preventing the formation of hydrogen pore. The forming coefficient of the welding seam is too small, the shape of the welding seam is narrow and deep, gas and inclusions are not easy to emerge, and gas and slag are easy to form. Rust and burr removal devices should be installed at the edge of longitudinal welded pipe steel plate to reduce the possibility of air hole.
銲接熱度（dù）是產生相應作（zuò）用（yòng）焊縫質量的十分重（chóng）要形式參數，需要設置的所在地不過進行安裝（zhuāng）在銑邊機和（hé）磁盤剪後，設置（zhì）的整體結構是一（yī）方麵2個四（sì）山五嶽所在地持續可調整暇時的積極性鋼絲輪，四山五嶽壓緊板邊;通（tōng）量的繼續厚薄通（tōng）常為25-45mm，通量細顆粒物（wù）度大、骨密度鍾頭繼續厚薄取更加最大值，反而（ér）取（qǔ）短小值;大脈動電流、低焊速繼續厚薄取更加最大（dà）值，反（fǎn）而取短小值，另外，夏季或大（dà）氣相對（duì）濕度大時，招生（shēng）的通量應吹幹後再運用;為的是（shì）進一步降低磁偏吹的產生相應作用，應使鑄件上銲接裸線的包括所（suǒ）在地（dì）僅或許進行隔離銲接終端機，防止一部分銲接裸（luǒ）線在鑄（zhù）件（jiàn）上形成大號電磁場;應較為順（shùn）序進一步減（jiǎn）少銲接運行速度或進行放大脈動電（diàn）流，進而選舉焊縫（féng）熔（róng）池非金屬的結晶體運行速度，因為於固體逸出，與此同時，在（zài）滿足相（xiàng）關條件時帶鋼進行遣發所在地不平（píng）穩定，應盡快（kuài）開展作出調整，杜絕借助一再微調前橋或後（hòu）橋保持成型，導致（zhì）固體逸出較為障礙;為防止認為矯平進（jìn）行（háng）遺漏的液化鐵皮（pí）等雜物參加有關成型生產線，應進行設置板麵進行理（lǐ）念設置。
Welding temperature is the key parameter affecting weld quality. The locations of clearance device is best installed after milling machine and disc shear. The structure of the device is an active steel wheel with adjustable clearance in two upper and lower positions on one side, and the upper and lower edges of the plate are pressed tightly. In addition, in summer or when the air humidity is high, the recovered flux should be dried and reused; in order to reduce the influence of magnetic bias blowing, the connection position of welding cable on workpiece should be only far away from the welding terminal, so as to avoid the secondary magnetic field produced by some welding cable on workpiece; the welding speed should be reduced or the current should be increased appropriately, so as to delay the welding seam. At the same time, if the delivery position of strip steel is unstable, it should be adjusted in time to avoid the difficulty of gas escaping through frequent fine-tuning of the front or rear axles. In order to avoid unwinding, leveling off iron oxide sheet and other debris entering the forming process, a plate cleaning device should be set up.
