ʻO ka maikaʻi a me ka nui o ka paipu wiliwili kila kila
ʻO ka paipu wiliwili kila kila, i kapa ʻia he paipu welded no ka pōkole, he paipu kila i hana ʻia me ke kila a i ʻole ke kila kila ma hope o ka ʻoki ʻana a hoʻokumu ʻia e ka hui a make. Loaʻa ka maikaʻi o ka paipu kila Welded i ke kaʻina hana maʻalahi, ka hana hana kiʻekiʻe, nā ʻano like ʻole a me nā kikoʻī a me ka liʻiliʻi o nā lako hana, akā ʻoi aku ka haʻahaʻa o kona ikaika ma mua o ka paipu kila seamless.
Mai ka makahiki 1930, me ka hoʻomohala wikiwiki ʻana o ka ʻenehana kiʻekiʻe kiʻekiʻe e hoʻomau ana i ka ʻōwili ʻana a me ka holomua o ka welding a me ka ʻenehana nānā ʻana, ua hoʻomaikaʻi mau ʻia ka maikaʻi o ka weld, ke hoʻonui nei nā ʻano a me nā kikoʻī o nā paipu kila welded, a ua loaʻa nā paipu kila seamless. ua hoʻololi hou ʻia i nā ʻāina hou aʻe, ʻoi aku hoʻi i nā paipu mea hoʻololi wela, nā paipu hoʻonaninani, nā paipu wai me ka haʻahaʻa haʻahaʻa, etc.
ʻO ke anawaena liʻiliʻi ke kila kila paipu i hana mau ʻia ma ka laina. ʻOi aku ka mānoanoa o ka pā, ʻoi aku ka nui o ka hoʻopukapuka ʻana o nā ʻāpana a me nā lako hui, a ʻoi aku ka liʻiliʻi o ka waiwai a me ka hana. ʻOi aku ka lahilahi o ka mānoanoa o ka pā, ʻo ia ka haʻahaʻa o ka lākiō hoʻokomo-puka; ʻO ka lua, ʻo ke kaʻina hana o ka huahana e hoʻoholo i kona mau pono a me nā hemahema. ʻO ka maʻamau, ʻo ka paipu kila welded he kiʻekiʻe kiʻekiʻe, ʻano mānoanoa o ka paia, kiʻekiʻe ka ʻōlinolino o loko a ma waho o ka paipu (ka ʻōlinolino o ka paipu kila i hoʻoholo ʻia e ka ʻili o ka pā kila), a hiki ke hoʻohālikelike ʻia. No laila, hoʻokomo ʻo ia i kona hoʻokele waiwai a me ka nani i ka hoʻohana ʻana i nā wai kahe kiʻekiʻe, waena a me ka haʻahaʻa.
316L stainless steel welded paipu he paipu kumu, no laila he nui nā hōʻailona pono o ka paʻakikī, me nā ʻano he nui. ʻO kēia ka mea e pili ana i nā hōʻailona paʻakikī o 16L stainless steel welded pipe. E like me nā ʻano hoʻokolohua like ʻole a me ka laulā noi, hiki ke hoʻokaʻawale ʻia ka paʻakikī i Brinell hardness, Rockwell hardness, Vickers hardness, shore hardness, microhardness and high temperature hardness. Hoʻohana mau ʻia ka paʻakikī ʻo Brinell, Rockwell a me Vickers no nā paipu.
1.ʻO Brinell hardness (HB) e kaomi i ka pōpō kila a i ʻole ka pōpō carbide cemented me kekahi anawaena i loko o ka hāpana me ka ikaika hoʻāʻo i ʻōlelo ʻia (f), e wehe i ka ikaika hoʻāʻo ma hope o ka manawa paʻa i ʻōlelo ʻia, e ana i ke anawaena indentation (L) ma ka hāpana. ili, a me ka waiwai paakiki Brinell ka quotient i loaa ma ka mahele ana i ka ikaika hoao e ka indentation spherical ili. Hōʻike ʻia ma HBS (pololei hao), ʻo ka ʻāpana n / mm2 (MPA), a penei ka helu ʻana: F - ka ikaika hoʻāʻo i kaomi ʻia i loko o ka ʻili o 316L stainless steel welded paipu hāpana, N, D - ke anawaena o ke kinipōpō kila. no ka hoʻāʻo ʻana, MMD - ke anawaena kūlike o ka indentation, mm. ʻOi aku ka pololei a me ka hilinaʻi o ka hoʻoholo ʻana o ka paʻakikī o Brinell, akā ma ka maʻamau he kūpono wale ʻo HBS no nā mea metala ma lalo o 450N / mm2 (MPA), ʻaʻole no ke kila ʻoi aku ka paʻakikī a i ʻole ka 316L stainless steel welded paipu. I ka 316L kuhiliʻole kila welded paipu, Brinell paakiki ka mea i hoohana nui ia. Hoʻohana pinepine ʻia ke anawaena indent D e hōʻike i ka paʻakikī o ka mea, he intuitive a maʻalahi.
No ka laʻana, hōʻike ʻo 120hbs10 / 1000130 i ana ʻia ka waiwai paʻakikī o Brinell ma ka hoʻohana ʻana i ka pōlele kila 10mm anawaena ma lalo o ka hana o 1000kgf (9.807kn) hoʻāʻo ikaika no 30s he 120N / mm2 (MPA).
2.ʻO ka hoʻāʻo paʻakikī ʻo Rockwell (HK) ʻO ka hoʻāʻo paʻakikī ʻo Rockwell, e like me ka hoʻāʻo paʻakikī ʻo Brinell, kahi ʻano hoʻāʻo indentation. ʻO ka ʻokoʻa, ʻo ia ke ana i ka hohonu o ka indentation, ʻo ia hoʻi, ma lalo o ke kaʻina hana o ka ikaika hoʻāʻo Yong mua (FO) a me ka ikaika hoʻāʻo holoʻokoʻa (f), e kaomi i ka indenter (cone wili kila a i ʻole ke kinipōpō kila) i loko o ka hāpana ʻili, wehe. ka ikaika ho'āʻo nui ma hope o ka wehewehe ʻana i ka manawa paʻa, a e helu i ka waiwai paʻakikī me ke ana ʻana o ke koena indentation hohonu hoʻonui (E). He helu ʻike ʻole kona waiwai, hōʻike ʻia e ka hōʻailona hr. ʻO nā unahi i hoʻohana ʻia he 9 mau unahi e like me a, B, C, D, e, F, G, h a me K. ʻO nā unahi maʻamau i hoʻohana ʻia no ka hoʻāʻo paʻakikī o ka 316L stainless steel welded paipu maʻamau a, B a me C, ie HRA, HRB a me HRC. Ua helu ʻia ka waiwai paʻakikī e ke ʻano penei: ke hoʻohana ʻia ka pālākiō a me C no ka hoʻāʻo, HR = 100-e. ke hoʻohana ʻia ka pālākiō B no ka hoʻāʻo ʻana, HR = 130-e. i ke kumu, e -- koena indentation hoʻonui hohonu, i hōʻike 'ia i loko o ka wae palena o 0.002mm, 'o ia hoʻi, i ka axial displacement o ka indenter he hookahi wae (0.002mm), ua like ia me ka helu o Rockwell paakiki. loli.
