ʻO ke kaʻina hana paipu kila Welded he ʻāpana kila, kaʻa, a me nā ʻano hana hoʻoheheʻe ʻē aʻe me ka hoʻohana ʻana i ka ʻōwili paʻi pololei a i ʻole helical direction curling i kahi ʻano cross-sectional i makemake ʻia, a laila ma ke ʻano o ka wela, ke kaomi ʻana, nā ʻano hana like ʻole o ka wiliwili ʻana e hui pū ai. loaa kila. No laila, hoʻokaʻawale ʻia nā hemahema o ka paipu kila i ʻelua mau ʻāpana: nā hemahema kumu kila a me nā hemahema weld.

1. Kino kumu kila
Nā hemahema o ka pepa ma hope o ka ʻōwili ʻana a me nā kaʻina hana ʻē aʻe, ka hapa nui o ka planar, e like me ka ʻili; ʻO ko lākou nāwaliwali koʻikoʻi delamination, inclusions, māwae, pelu, a me nā mea ʻē aʻe, ʻo ia ka mea maʻamau o nā hemahema o loko. Stratification e hana i ka like 'ole o ka māwae i ka tensile stress perpendicular i ka ili o ka lau e ka hierarchical e koʻikoʻi i ka ikaika o ka paipu kila, aole ia e ae i na hemahema.

2. Weld hemahema
ʻO nā hemahema Weld e pili ana i ka hemahema i ka wā wili a ma hope o ka hoʻopili ʻana i ka hopena i ka weld i māhele ʻia i nā māwae, pores, slag, incomplete penetration, incomplete fusion, undercut weld defects. Intensive weld porosity, slag, etc. a dense ekolu-dimensional defects, māwae, nele o ka hui 'ana a me nā hemahema 'ē aʻe i loko o ka hihia o ka palahalaha, poino nui. Wehe i ka slag, komo piha ʻole a me nā hemahema ʻē aʻe i ka hihia o ka strip, pōʻino nui. Pores, slag a me nā hemahema liʻiliʻi like ʻole i ka hihia. Weld defects oi ke kumu o ka ikaika kila, plastic a me na pilikia e ae, koʻikoʻi pili i ka maikaʻi o ke kila, welded kila paipu maikaʻi pili pono i ka palekana hana a me ka lawelawe ola o ka aila a me ke kinoea pipelines, a pela no ka weld inspection nui no ka welding māwae māwae. pores, slag, incomplete penetration, incomplete fusion and other pores flaw detection of defects.