Loiloi Kahiko Kahiko & Uila Ma'amau

ʻElua mau lola maʻamau i hoʻohana nui ʻia ma nā nozzles abrasive blast a me nā mea paʻa nozzle blast. Kapa mākou iā lākou ʻo Coarse Contractor Thread a me Fine Standard Thread.

A laila he aha ka ʻokoʻa ma waena o ka milo koʻikoʻi a me ka milo maikaʻi? E aʻo kākou e pili ana iā lākou.

ʻO ke kaula kuʻikahi koʻikoʻi ʻo 50mm ʻoihana maʻamau maʻamau ma 4½ mau ʻīniha (TPI) (114mm), no laila ua kapa ʻia ʻo ia he 2-ʻīniha kaula i kekahi manawa. Ua like ia me ka wili laau. Nui ka lumi ma waena o nā kaula a ʻoi aku ka nui o lākou.

Kapa ʻia ke kaula maikaʻika National Standard Free-Fitting Straight Mechanical Pipe Thread (NPSM). ʻO ia ke kaula pololei maʻamau maʻamau i hoʻohana nui ʻia ma ʻAmelika ʻAmelika, ʻo iake nānā aku me he mīkini wili. Hoʻohana nui ʻia nā ʻāpana ʻelua o ka milo maikaʻi i nā nozzles blast: 1-1/4″ thread a me 3/4”-14 thread.

ʻO ka ʻokoʻa ma waena o ke kaula Contractor a me ke kaula maʻamau ua maopopo loa. ʻOi aku ka nui o ka nui a me ka mamao ma waena o ʻelua mau milo o ka milo Contractor coarse ma mua o ka milo maikaʻi. Hiki iā mākou ke ʻike iā lākou mai ke kiʻi e like me lalo.

No ka Coarse Contractor Thread vs. Fine Standard Thread, ʻaʻole mākou e ʻōlelo ʻoi aku ka maikaʻi o kekahi ma mua o kekahi. Hāʻawi ʻo Clemco lāua ʻo Contracor i ka 50mm coarse thread ma ke ʻano maʻamau a me kā lākou hōʻaiʻē, makemake mākou ma BSTEC e hoʻohana i ke kaula kuʻikahi e like me ke ʻano o ke kaula nui no nā nozzles a me nā mea paʻa. ʻAʻole liʻiliʻi ka manawa o ka hoʻopaʻa ʻana a i ʻole ka ʻoki ʻana i nā kaula no ka mea ʻoi aku ka nui a ʻoi aku ka maʻalahi o ke kau ʻana. Ke puhi nei me ka media ʻoi aku ka maikaʻi, ʻaʻole ʻoe e pilikia e hoʻopaʻa i ka media.

No ka 1-1/4″ Fine Thread, ʻoi aku ka kaulana ma mua o ke kaula kuʻikahi ma ʻAmelika ʻĀkau no kāna huaʻōlelo Standard. Ke kūʻai aku ʻoe i kahi blaster abrasive mai Schmidt, Empire, Dustless Blasting, Marco, a me nā mea ʻē aʻe, ʻo ka nozzle mua e hele mai me kēlā mīkini ʻo ia ka 1-1/4″ kaula maikaʻi. ʻO ia ke kumu maʻamau i ka mākeke ʻAmelika ʻAmelika. ʻOi aku ka lōʻihi o ka milo maikaʻi ma mua o ka milo koʻikoʻi i ka wā e hoʻokomo ʻia ai, a paʻa paha ʻoe i ka pāpaʻi ke hoʻohana ʻoe i ka media maikaʻi loa. Akā, ʻoi aku ka ikaika o ka milo maikaʻi ma ka hana tensile a me ka shear ma mua o ka lola koʻikoʻi no kona pitch thread.

Eia nō naʻe, ʻo kēlā me kēia ʻano milo āu e makemake ai, e hoʻopaʻa pono i kāu nozzle a me kāu hoʻohui nozzle e hoʻohālikelike i nā loina ke kau ʻana i kāu kauoha. Lawe nui ʻo BSTEC i ke kaula 50mm Contractor a me 1-1/4 ″ kaula maikaʻi. Loaʻa iā mākou nā kaula 3/4″ no kēlā mau ʻāpana liʻiliʻi a me nā pahu pahu.