HSAW mapaipi (spiral undermerged arc welded pombi), mabe esimbi inopisa-yakakungurutswa simbi uye kukotama yakaumbwa zvinoenderana nemhepo, otomatiki yakanyura arc welding inoitwa mukati memusono uye yekunze seam welded spiral seam simbi pombi (inozivikanwawo se spiral welded pombi. , spiral pipe, spiral steel pipe). Kana zviri zvezvikonzero zvinotevera, inoshandiswa zvakanyanya mukugadzira hombe dhayamita simbi pombi:
1) kushandura chimiro chekona, iwe unogona kushandisa yakafanana hupamhi strip kugadzirwa akasiyana calibres simbi pombi;
2) nokuti inoramba ichikotama, kureba kwepombi yesimbi kureba hakuna muganhu;
3) weld spiral-shaped yunifomu kugovera padenderedzwa yepombi yese yesimbi, saizi yepombi yesimbi, kurongeka kwepamusoro, kusimba kwepamusoro;
4) nyore kushandura saizi yakakodzera zvidiki zvesimbi pombi kugadzirwa kwemhando dzakawanda.

Spiral weld seam yakatwasuka chubhu kureba, chubhu kureba L, iyo weld kureba iL / cos (8). Kwenguva yakareba vachikakavadzana nezve spiral uye yakatwasuka seam pombi, kunyanya, ndiani aripamusoro kana achienzaniswa neUOE simbi pombi. Spiral pombi yekugadzira tekinoroji kusvika nhasi, isu tinofanirwa kuve yakazara uye yakaringana ongororo uye kuenzanisa, iyo pfungwa ye ??kurebesa spiral weld.

Chekutanga pane zvese, nekuda kwekukanganisa mune weld parallel, kune spiral pombi, iyo weld defects ndeye "oblique defects". Panguva yekushandiswa, iyo huru yekusimbisa kutungamira kwepombi yesimbi, iyo pombi axis kutungamira kweiyo yakaenzana kuremara kureba ndeye samll pane yakatwasuka seam pombi idiki; Chechipiri, sezvo simbi yepombi yakakungurutswa ndiro, inokanganisa kusimba hombe anisotropy padivi pekutenderedza nzira CVN kukosha pane perpendicular kune inotenderera nzira yeCVN kukosha kwakapetwa katatu. Yakatwasuka musono pombi inotambura nekunetseka kukuru kwakanyatso kutenderera kune yakaderera pombi inokanganisa kuramba, nepo spiral iri kudzedzereka yakaderera munzira yepombi inokanganisa kuramba, kuitira kuti spiral weld disavantages kuita zvakanakira.