Nā koi ʻenehana nopaipu flange forgings(mehoʻopunipuniaʻāpana ʻōwili).
1.ʻO ka papa a me nā koi ʻenehana onā kalaiwa(menā ʻāpana kalaiwa a ʻōwili ʻia) e hoʻokō i nā koi kūpono o JB4726-4728.
2.Nominal kaomi PN 0.25 MP 1.0 MPa kalapona kila a me austenitic kuhiliʻolehao haoʻae ʻia ka hoʻohana ʻana i ka pae Ⅰ forgings.
3.Ma waho aʻe o kēia mau ʻōlelo, ʻo ke kaomi nominal o PN 1.6 MPa a 6.3 MPa forgings e kūlike me ka pae Ⅱ a i ʻole ma luna o ka pae Ⅱ.pae forgings.
4.I loko o kekahi o kēia mau mea pono e like me ke koi o Ⅲ anā kalaiwa: (1) kaomi nominal PN acuity 10.0 MPaʻauʻau flange;(2) chromium-molybdenumhao haome ke kaomi inoa PN>4.0MPa;(3) ferritichao haome ke kaomi inoa PN>1.6MPa a me ka mahana hana ≤-20 ℃.

Buttwiliwili me ka ʻāʻī, kuʻi palahalaha me ka ʻāʻī, wiliwili kumuahili ʻiahana ʻia ma ka forging a i ʻoleforging rollingkaʻina.Ke hoʻohana ʻia ka pā kila a i ʻole ke kila ʻāpana, pono e hoʻokō ʻia nā koi aʻe:
1.E nānā ʻia ka pā kila e ka ultrasonic me ke kīnā ʻole stratification;
2.E ʻoki ʻia i loko o nā ʻāpana ma ka ʻaoʻao o ka ʻōwili ʻana o ke kila, a hoʻopili ʻia i loko o ke apo ma ke kuʻo ʻana, a hana i ka ʻili o ke kila i ʻano cylinder o ke apo.nā ʻāʻī me nā ʻāʻī;
3.E lawe ʻia ka weld komo piha no ka weld butt o ke apo;
4.ʻO ka weld weld o ke apo e hana i ka mālama wela ma hope o ka weld a hana i ka 100% X-ray a i ʻole ka ultrasonic flaw detection, a me ka X-ray flaw detection e hoʻokō i nā koi o ka papa II o JB4730 a me ka ʻike kīnā ultrasonic e hālāwai me ka papa I. nā koi o JB4730.