Ke koho ʻana i ke kila kila kūpono no ka hana kemika

I loko o ka ʻoihana hana kemika, ʻoi aku ka koho ʻana o nā mea ma mua o ka hana—he mea ia o ka palekana, ka lōʻihi, a me ka hoʻohana pono ʻana i ke kumukūʻai. Pono nā lako i hoʻohana ʻia ma kēia ʻāpana e kū i kenā kemika huhū, nā mahana kiʻekiʻe, nā kaomi kiʻekiʻe, a menā wahi ʻinoi kēlā me kēia lā. ʻO kēia kahikila kohu ʻolehōʻike ʻia he koho kūikawā.

Akā, ʻaʻole like nā kila kila āpau. He mea koʻikoʻi ke koho ʻana i ka papa kūpono no ka loaʻa ʻana o ke ola lawelawe lōʻihi, ka pale ʻana i ka hāʻule ʻana o nā lako, a me ka hōʻoia ʻana i ka pono o ka hana. Ma kēia ʻatikala, e ʻimi mākou i nā kumu nui no ke koho ʻana i ke kila kila i ka hana kemika, nā papa maʻamau, a me ko lākou mau pono kikoʻī. Lawe ʻia iā ʻoe esasaalloy, kāu hoa hilinaʻi i nā mea kila kila no ka maikaʻi o ka ʻoihana.

No ke aha he mea nui ke kila kila i ka hana kemika

Hāʻawi ke kila kila i kahi hui kūikawā oke kūpaʻa i ka pala, ka ikaika, ke kūpaʻa wela, a me ka maʻemaʻeʻO kona ʻano waiwai i ka chromium e hoʻokumu i kahi papa oxide passive e pale ai i ka ʻili mai ka hoʻouka kemika—ʻoiai i ke alo o nā waikawa ikaika, nā alkalis, a me nā mea hoʻoheheʻe.

ʻO nā pono nui no nā wahi kemika:

• ʻO ke kūpaʻa maikaʻi loa i ka pitting a me ka crevice corrosion

• Nā waiwai mechanical ikaika ma nā mahana kiʻekiʻe a me nā mahana haʻahaʻa

• ʻO ka maʻalahi o ka hana ʻana a me ka hoʻopili ʻana

• Ka mālama haʻahaʻa a me ke ola lawelawe lōʻihi

• Hoʻohālikelike me nā ʻōnaehana hygienic a me clean-in-place (CIP)

At sasaalloy, hoʻolako mākou i nā huahana kila kila kiʻekiʻe kemika e hoʻokō ana i nā kūlana honua a me nā koi kikoʻī o ka mea kūʻai aku.

Nā Kumu e Noʻonoʻo ai i ke Koho ʻana i ke Kila Kūlohelohe

I ke koho ʻana i ke kila kila no nā noi kemika, pono nā ʻenekinia e loiloi:

• Ka hoʻohuihui kemika o ka pāpaho hana

• Ka nui o ka hoʻohuihui, ka mahana, a me ke kaomi

• ʻAno o ka pala (e laʻa, maʻamau, pitting, stress cracking)

• Nā pono hana kuʻihao a me ka hana ʻana

• Ka mālama ʻana i nā lula a me nā hana hoʻomaʻemaʻe

• Kumukūʻai a me ka loaʻa ʻana

ʻO ka kūlike ʻole ma waena o ke kaiapuni a me nā mea hana ke alakaʻi i kaka hāʻule mua ʻana, nā pani ʻana pipiʻi, a me nā mea pōʻino palekana.

Nā Papa Kila Kila Maʻamau no ka Hana Kemika

1. 304 kila kila

• Hoʻonohonoho ʻana18% chromium, 8% nikela

• Nā Pōmaikaʻi: Kū'ē maika'i i ka palaho, ho'okele waiwai

• Nā PalenaʻAʻole kūpono no nā wahi waiwai i ka chloride

• Nā noiNā pahu mālama, nā paipu, nā kākoʻo kūkulu

Hoʻohana nui ʻia ka 304 no nā lako kemika no nā kumu maʻamau, ʻoiai ma kahinā waikawa palupalua i ʻole aia nā wahi ʻaʻole chloride.

2. 316 / 316L kila kila

• Hoʻonohonoho ʻana16% chromium, 10% nickel, 2% molybdenum

• Nā PōmaikaʻiHoʻomaikaʻi ʻia ke kū'ē ʻana i nā chlorides a me nā wahi waikawa

• Nā noiNā mea hoʻohui, nā mea hoʻololi wela, nā mea hoʻoheheʻe, nā kiwikā

Loaʻa iā 316Lka haʻahaʻa o ka nui o ke kalapona, e hoʻomaikaʻi ana nonā noi i hoʻopili ʻiakahi e hiki ai i ka palaho ma nā hono ke lilo i mea pilikia.

3. 317L kila kila

• Hoʻonohonoho ʻanaʻOi aku ka kiʻekiʻe o ka molybdenum ma mua o 316L

• Nā Pōmaikaʻi: Hoʻonui ʻia ke kū'ē ʻana ika lua chloride a me ka pala o ka crevice

• Nā noi: Ka hoʻokeʻokeʻo ʻana i ka pulp a me ka pepa, nā mea hana kemika, nā mea holoi

Ke hāʻule ʻole ka 316L i nā wahi ʻino loa, hāʻawi ka 317L i kahi piʻi waiwai i ka palekana.

4. 904L kila kila

• Hoʻonohonoho ʻanaKiʻekiʻe ka nui o ka nickel a me ka molybdenum

• Nā PōmaikaʻiMaikaʻi loa i lokonā wahi waikawa ikaikame nā waikawa sulfuric, phosphoric, a me acetic

• Nā noi: Nā mea hoʻololi wela, nā lako pickling, hana waikawa

Kūʻē ʻo 904L i nā mea hoʻemi a me nā mea hoʻomake a he kūpono loa ia e kūʻē inā pāpaho hoʻouka kauama nā mahana kiʻekiʻe.

5. Nā kila kila Duplex (e laʻa, 2205, 2507)

• Hoʻonohonoho ʻanaʻAno austenitic-ferritic kaulike

• Nā PōmaikaʻiIkaika kiʻekiʻe, kū'ē maikaʻi ika haki ʻana o ka palaho koʻikoʻi

• Nā noi: Nā ipu kaomi, nā mea hoʻololi wela, ka hana ʻana ma waho o ke kai

Hoʻohui nā kila kila Duplex i nā waiwai maikaʻi loa o nā kila austenitic a me ferritic, e kūpono ana iā lākou no nā noi kiʻekiʻe-stress, waiwai i ka chloride.

6. Alloy 20 (UNS N08020)

• Nā Pōmaikaʻi: Hoʻolālā kūikawā ʻia noke kū'ē ʻana i ka waikawa sulfuric

• Nā noi: Nā pahu mālama waikawa, nā lako pickling, ka lawe ʻana i nā kemika

Hāʻawi ʻo Alloy 20 i ka palekana maikaʻi loa i lokonā kaʻina hana i hoʻopiha ʻia me ka waikawa a me ka chloride, ʻoi aku ka maikaʻi ma mua o 316 a me 904L i nā wahi sulfuric.

Nā noi ma ka ʻoihana kemika

Hoʻohana ʻia ke kila kila ma aneane kēlā me kēia pae o ka hana kemika, me:

• Nā pahu mālama a me nā ipu kaomi

• Nā keʻena hoʻohuihui a me ka hopena

• Nā mea hoʻololi wela a me nā mea hoʻohuihui

• Nā ʻōnaehana paipu a me nā kiwikā

• Nā kolamu hoʻoheheʻe a me nā mea holoi

Mahalo i kona ʻano maʻemaʻe a me ka non-reactive, kūpono hoʻi ke kila kila nolāʻau lapaʻaua mehana kemika pae meaʻai.

Nā Pōmaikaʻi o ke Koho ʻana i ka Papa Kūpono

ʻO ke koho ʻana i ke kūlana kila kila kūpono e hōʻoiaʻiʻo ana i kēia mau mea:

• Hoʻemi ʻia ka downtime ma muli o ka pala a i ʻole ka hemahema

• Nā kumukūʻai mālama haʻahaʻa

• ʻOi aku ka lōʻihi o ke ola o nā lako

• Hoʻomaikaʻi ʻia ka palekana a me ka mālama ʻana

• ʻOi aku ka maikaʻi o ka hoʻihoʻi ʻana ma ka hoʻopukapuka kālā

At sasaalloy, hana pū kā mākou hui loea me nā mea kūʻai aku e ʻike i ka hopena metala kūpono loa e pili ana i nā kūlana hana maoli—ʻaʻole wale nā ​​​​waiwai pepa ʻikepili.

Hopena

I ka ʻoihana hana kemika, ʻo ke koho ʻana i nā mea he hoʻoholo koʻikoʻi ia e pili pono ana i ka hopenaka hana, ka palekana, a me ka loaʻa kālāMe kona kūpaʻa kūʻokoʻa i ka pala, ke kūpaʻa wela, a me nā waiwai mechanical,ʻo ke kila kila ke kumu o ke kihino nā wahi kemika koi.

Inā ʻoe e hana ana me nā waikawa, chlorides, wela kiʻekiʻe, a i ʻole ke kaomi,sasaalloyhāʻawi i kahi laulā piha o nā papa kila kila i hana ʻia no ka hana maikaʻi loa. Mai 304 a me 316L a i 904L a me nā hui duplex,sasaalloyua kūpaʻa i ka hāʻawi ʻana i nā mea e hana ana ma kahi e koʻikoʻi loa ai—i loko o kāu kaʻina hana.