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He aha ka ʻokoʻa ma waena o 304, 304h a me 304L?

Ka manawa: 2021-08-25 Nā Hits: 1

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ʻO ka ʻoiaʻiʻo, ʻo ka ʻike o ka chromium nickel he 304 stainless steel, nona ka 18% chromium (CR) a me 8% nickel (Ni), akā ʻo ka ʻokoʻa nui ka ʻokoʻa o ka ʻike kalapona.

ʻO 304L kahi kila kila kila ultra-haʻahaʻa me ka ʻike kalapona ma lalo o 0.03%, hiki ke pale i ka corrosion intergranular. Ma ke kumumanaʻo, ʻoi aku ka ikaika o ka hopena o ke kūpaʻa corrosion ma mua o 304, akā ʻaʻole maopopo ka hopena i ka hoʻohana pono. ʻO ke kumu o ka hoʻemi ʻana i ke kalapona e like me ka hoʻohui ʻana i ka titanium, akā ʻoi aku ka kiʻekiʻe o ke kumukūʻai hoʻoheheʻe o 321 me ka titanium, ʻoi aku ka mānoanoa o ke kila hoʻoheheʻe ʻia a ʻoi aku ke kumukūʻai.

ʻO H ma 304H e pili ana i ka wela kiʻekiʻe, a ʻo ka ʻike kalapona kiʻekiʻe ka hōʻoia o ka ikaika wela kiʻekiʻe. Ke hoʻohana ʻia ke kila austenitic ma luna o 525 ℃, ʻaʻole i emi iho ka ʻike kalapona ma mua o 0.04%, a ʻo ka carbide ka pae hoʻoikaika, ʻoi aku ka maikaʻi o ka ikaika wela ma mua o ka austenite maʻemaʻe.

Ma waena o lākou, ʻo 304H ka ʻike kalapona kiʻekiʻe loa, ʻo ka haʻahaʻa haʻahaʻa haʻahaʻa he 304L, a ʻo ka ʻike kalapona o 304 stainless steel ma waena o nā mea ʻelua. ʻOi aku ka kiʻekiʻe o ke kalapona, ʻoi aku ka maikaʻi o ka pale ʻana i ka corrosion o ke kila kila, a ʻoi aku ka maʻalahi o ka ʻōpala. ʻO nā mea kalapona like ʻole ke alakaʻi i nā kumukūʻai like ʻole. I nā huaʻōlelo ʻē aʻe, nā hoʻohana like ʻole a me nā koi like ʻole.