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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.

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.

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.

ʻO ka wā e hoʻololi ai i nā maʻa paʻa: He alakaʻi i nā koina nānā pinepine a me ka manawa

ʻO ka ʻike i ka wā e hoʻololi ai i nā maʻa palahalaha he mea nui ia no ka palekana o ka rigging a me ka hoʻokō ʻana i nā kānāwai. ʻO nā kūlana ʻoihana ʻo ASME B30.9 a me EN 1492-1 e wehewehe i ʻelua pae o ka nānā ʻana - pinepine (i kēlā me kēia lā a i ʻole ka hoʻohana mua ʻana) a me ka manawa (makahiki a i ʻole hapalua makahiki) - kēlā me kēia me nā koina kikoʻī no ka hoʻoholo ʻana i ka wā e wehe ʻia ai kahi maʻa mai ka lawelawe. Hōʻike kēia alakaʻi i ka ʻokoʻa ma waena o ka nānā pinepine a me ka manawa, hāʻawi i nā papa helu kikoʻī no kēlā me kēia, a wehewehe i nā pae hoʻomaha e hoʻomaka ai ke pani ʻana i ka maʻa. No nā luna hoʻokele liʻiliʻi, nā luna palekana, a me nā mea hoʻohana, he kuhikuhi kūpono kēia no ka mālama ʻana i kahi waihona maʻa palekana.

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

He aha ke ola o kahi maʻa pōʻai?

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

ʻO ka wā e hoʻololi ai i nā maʻa paʻa: He alakaʻi i nā koina nānā pinepine a me ka manawa

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