paipu ERWkoi ʻenehana
Nā koi ʻenehana | No ka lawe ʻana i ka aila a me ke kinoea | No ka lawe ʻana i ka wai kaomi haʻahaʻa |
Mea waiwai | ʻO Gr.b | ʻO Gr.b |
Anawaena kino paipu | D<508mm, ±0.75%;D≥508mm, ±0.75% | D≤168.3, ±1.0%;168.3<D≤508,±0.75%; |
Mānoanoa pā | D<508mm+15.0%,-12.5%;D≥508mm, +17.5%,-10% | ±12.5% |
Kulou ana | ≤0.2% | ≤0.2% |
ʻOvality | D≥508mm,≤±1% | ≤±0.75% |
Bevel | ≤1.59mm | ≤5mm |
ʻO ka hoʻāʻo hydrostatic | 100% | 100% |
ʻO ka hoʻāʻo ʻole | 100% non-destructive weld inspection | He 100% ka ʻike hewa ʻana o ka ultrasonic. |
ERW paipu weld contour shape
Wahi a ka API SPEC 5L maʻamau, ʻo ka hapa nui o nā mea kanu hale i ka wā SAW paipu weld tensile hoʻāʻo, maʻamau e mālama i ka hoʻoikaika weld, hoʻāʻo tensile pololei mai ka hoʻāʻo ʻaʻole i haki i ke kūlana welds.ʻO ke kumu nui e hiki ke hoʻopili ʻia i ke alo o ka hoʻoikaika weld.SAW paipu, i olelo aku oi ma mua o kiʻekiʻe a hoʻoikaika kiʻekiʻe, i loko o ka pahuhopu e hoʻonui i ka mānoanoa o ka weld wahi, a hoʻonui i ka structural ikaika o ka weld, ka ikaika o ka weld wahi (ka holoʻokoʻa structural ikaika) ma mua o ka ikaika o ke kumu. ʻāpana metala.
Reference SAW paipu weld E hooikaika ana i ka pono ma ka ERW paipu welding Weld manao e kaomi mānoanoa, i loko o ka puni o ka weld e hana i ka mānoanoa nui ma mua o ka mānoanoa o ka mea kumu, e hoʻonui i ka reinforcing papa weld wela-pili wahi, a laila i loko. ka welding burr hoʻokumu ʻana i ke ʻano like ʻole, e hana ana i ka ʻāina hoʻololi wavy e hoʻomaikaʻi i ka ikaika o ke kūkulu ʻana o ka wahi weld ma waena o nā metala kumu a me nā welds kila.I kēia manawa, no ka mea, ʻoi aku ka ʻoi aku o ka hoʻomanawanui ʻana o ka mānoanoa o nā welds paipu, ʻoiai ʻo ka ʻoki ʻana i ka ʻōnaehana instability ma muli o ka glitch kūloko, ka hopena i kekahi degere o nā welds scratch groove, ʻaʻole ia e hoʻemi nui i ka ikaika weld.Eia kekahi, ʻo ka weld a me ka base metala laumania hoʻololi, kani ultrasonic ho'āʻo o ka weld 'aʻole i kumu hoʻopunipuni helu helu.
E wili i ka wili o loko, maalahi loa ka hoʻololi ʻana i ka metala.ʻO ka maʻamau he 11.9mm ka mānoanoa o ka pā paipu kila, kahi mānoanoa o nā welds extrusion maʻamau mai kahi 25mm a i kēlā me kēia ʻaoʻao o kēlā me kēia weld, ʻo ka weld ʻāpana ma hope o ka wehe ʻana o ka burr ma mua o nā ʻāpana ʻē aʻe o ka mānoanoa kumu kumu o kahi 10%.ʻO ka mānoanoa liʻiliʻi o ka paipu, hiki ke hoʻemi ʻia ka laulā mānoanoa, akā ʻo ka hapa o ka weld mānoanoa nā ʻāpana o ka mana maʻamau 10% o ka mānoanoa kumu.
Ka manawa hoʻouna: Oct-29-2019