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Hiki iaʻu ke hui pū i ʻelua mau maʻa palahalaha e hoʻonui i ka lōʻihi?

Hiki i ka maʻa palahalaha he mau kapuaʻi pōkole loa ke hoʻopau i ka hana hāpai. ʻO ka manaʻo koke: no ke aha ʻaʻole e hui pū i ʻelua maʻa? He mea maʻamau ka hana o ka hoʻohui ʻana i nā maʻa, akā, e like me ka OSHA 1910.184(c)(2) a me ASME B30.9, ʻaʻole e hoʻopōkole ʻia a hoʻolōʻihi ʻia nā maʻa ma ka wili ʻana a i ʻole ka wili ʻana, ʻaʻole hoʻi e hoʻopili ʻia me ka wili.

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He aha ke ʻano o ke code kala ma kahi maʻa hāpai?

Hiki mai kahi maʻa hāpai i kahi kala kikoʻī - akā ʻaʻole kēlā kala no ka nani wale nō. Wahi a EN 1492-1 (nā maʻa pūnaewele paʻa) a me EN 1492-2 (nā maʻa pōʻai), pili kēlā me kēia kala i kahi palena hana (WLL) kikoʻī, e hiki ai ke ʻike wikiwiki a maʻalahi i ka pae hana.

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He aha ke ola o kahi maʻa pōʻai?

ʻAʻole hele mai ka maʻa poepoe me ka lā pau i hoʻopaʻa ʻia ma kona lepili—akā, ʻaʻole ia he manaʻo e mau loa ia. Wahi a EN 1492-2, ua kuhikuhi ʻia ke kūlana ʻEulopa no nā roundslings, ka palena o ka hana (WLL) a me ka mea palekana, akā pili ke ola lawelawe i nā kūlana hoʻohana maoli. Hoʻomaopopo kekahi mau mea hana i ke ola o 10 mau makahiki mai ka hoʻohana mua ʻana ma lalo o nā kūlana kūpono.

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ʻO ka Polyester vs. Nylon Flat Slings: Ke Kūʻai Kemika a me ka Elongation Profiles

ʻO ke koho ʻana ma waena o ka maʻa palahalaha polyester a me ka maʻa palahalaha nylon, ʻaʻole ia he mea ʻo ka 'ʻoi aku ka maikaʻi' ma mua o ka mea ʻē aʻe - pili ia i ke kaiapuni noi. Hoʻokaʻawale nā ​​mea ʻelua i nā palena haʻahaʻa hana like a me ke ʻano wela (-40°C a 100°C) ma lalo o EN 1492-1, akā ʻokoʻa loa i ka elongation, ke kū'ē kemika, a me ka pane ʻana o ka makū. ʻO ka nylon ka lōʻihi 6-10% ma ka haʻahaʻa helu ʻia a kūʻē i ka alkali akā ua luku ʻia e nā waikawa. ʻO ka polyester ka lōʻihi o 3-4% wale nō a pale i nā ʻakika akā ua pōʻino ʻia e ka alkali. Hāʻawi kēia alakaʻi i kahi hoʻohālikelike kikoʻī e kōkua i nā ʻenekinia a me nā ʻoihana rigging e koho i nā mea maʻa palahalaha kūpono no kā lākou kūlana hana.

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