سرپل اسٽيل پائپ(اسٽيل پائپ اعلي معيار جي ڪاربان اسٽيل مان ٺهيل آهي بغير ملبي ۽ سٺي صفائي آهي) is a steel pipe with spiral seam, which is made of strip steel coil as raw material, اڪثر گرم طور تي ڪڍيو ويو, ۽ خودڪار ڊبل-وائر ڊبل رخا آبدوز آرڪ ويلڊنگ جي عمل ذريعي ويلڊ ٿيل. It is mainly used in pipeline transportation of oil, قدرتي گيس, پل, ڊاک, رستا, buildings and other projects. Welding is the most common connection method for steel pipes, so how are spiral steel pipes generally welded?
Spiral steel pipe generally adopts advanced double-sided submerged arc welding process, which can realize welding in the best position, and is not prone to defects such as misalignment, welding deviation and incomplete penetration, and it is easy to control the welding quality.
1) خام مال پٽي coil آهن, ويلڊنگ تار ۽ flux. It has to undergo a rigorous physical and chemical inspection before it is put into use.
2) For the butt joint of the strip steel, single wire or double wire submerged arc welding is used, and active submerged arc welding is used for repair welding after rolling into a steel pipe.
3) The electric contact pressure gauge is used to control the pressure of the cylinders on both sides of the conveyor to ensure the smooth conveying of the strip.
4) Beforeهڻ کان ا, پٽي برابر آهي, تراشيل, رٿيل, مٿاڇري کي صاف ۽ پهچايو ويو ۽ اڳ ۾ موڙيندڙ.
5) Use external control or internal control roll forming.
6) The welding seam gap control equipment is selected to ensure that the welding seam gap meets the welding requirements, and the steel pipe dimension, the amount of misalignment and the welding seam gap are strictly controlled.
7) Both internal welding and external welding are used for single wire or double wire submerged arc welding by American Lincoln welding machine, جيئن ته مستحڪم ويلڊنگ معيار حاصل ڪرڻ لاءِ.
8) The welded seams are all inspected by the online continuous ultrasonic automatic flaw tester, جيڪو يقيني بڻائي ٿو 100% سرپل ويلڊز جي غير تباهيءَ واري جاچ ڪوريج. جيڪڏهن ڪو نقص آهي, اھو پاڻمرادو الارم ڏيندو ۽ نشان ا sprayلائيندو, ۽ پيداوار جي ڪارڪنن کي ڪنهن به وقت تي عمل پيراگراف کي ترتيب ڏئي سگهي ٿو مطابق وقت ۾ عيب کي ختم ڪرڻ لاء.
9) اسٽيل پائپ کي اڪيلو ٽڪرن ۾ ڪٽڻ لاءِ ايئر پلازما ڪٽڻ واري مشين استعمال ڪريو.
10) ھڪڙي اسٽيل پائپ ۾ ڪٽڻ کان پوءِ, اسٽيل جي پائپ جي ھر ھڪ ميچ کي لازمي طور تي ھڪڙي سخت انسپيڪشن سسٽم مان گذرڻو پوندو ته جيئن مشيني خاصيتن کي جانچجي, ڪيميائي ساخت, fusion status of the weld, the surface quality of the steel pipe and non-destructive testing to ensure that the pipe making process is qualified. , can be officially put into production.
11) ويلڊز تي لڳاتار سونڪ فلي جي سڃاڻپ جا نشان ھجڻ وارا حصا دستي الٽراسونڪ موج ۽ ايڪسري ذريعي ٻيهر جانچيا ويندا. جيڪڏهن اهي واقعي خراب آهن, they shall be repaired and subjected to non-destructive inspection again until it is confirmed that the defects have been eliminated.
12) ٽيوب جتي پٽي بٽ ويلڊ ۽ ٽي جوائنٽ سرپل ويلڊ سان ٽڪرائجي ٿي، سڀني کي X-ray ٽيليويزن يا فلمنگ ذريعي معائنو ڪيو وڃي ٿو..
13) Each steel pipe is tested by hydrostatic pressure, ۽ دٻاء بنيادي طور تي سيل ڪيو ويو آهي. ٽيسٽ پريشر ۽ وقت سختي سان ڪنٽرول ٿيل آهن اسٽيل پائپ واٽر پريشر مائڪرو ڪمپيوٽر جو پتو لڳائڻ وارو اوزار. ٽيسٽ پيرا ميٽرز پاڻمرادو printedپيل ۽ رڪارڊ ٿيل آھن.
14) پائپ آخر مشين آهي ته جيئن آخر منهن جي verticality, بيول زاويه ۽ ڪنڌ واري ڪنڊ صحيح طور تي ڪنٽرول ٿيل آهن.
جڏهن ويلڊنگ, be sure to control the size of the weld gap. If the weld gap of the spiral steel pipe is too large, the proximity effect will be reduced, the eddy current will lack heat, the weld seam will be poorly crystallized, and incomplete fusion or cracking will occur indirectly; It will form welding seam burning; perhaps by kneading the welding seam, it will form a pit after rolling, which will affect the welding surface quality of the steel pipe.