Nā koi ʻenehana paipu ERW

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 D508mm, ±0.75%;D≥508mm, ±0.75% D≤168.3, ±1.0%;168.3D≤508,±0.75%;
Mānoanoa pā D508mm+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