Hoʻopilikino ʻia 304 304L pā kila kila
Nā hiʻohiʻona o ka pā kila kila
1. Weldability
Loaʻa nā koi like ʻole o ka hoʻohana ʻana i nā huahana no ka hana welding.ʻAʻole pono ka papa papaʻaina i ka hana welding, a komo pū kekahi mau ʻoihana ipuhao.Eia nō naʻe, ʻo ka hapa nui o nā huahana e koi i ka hana kuʻi ʻana maikaʻi o nā mea maka, e like me ka papa papa ʻelua, nā kīʻaha thermos, nā paipu kila, nā mea hoʻomehana wai, nā dispenser wai, etc.
2. Ke kū'ē i ka corrosion
ʻO ka hapa nui o nā huahana kila kila maikaʻi ke kūʻē i ka corrosion, e like me ka papa ʻaina papa I a me II, nā mea kīhini, nā mea hoʻomehana wai, nā mea hoʻokaʻawale wai, a me nā mea ʻē aʻe. a ninini ma hope o kekahi manawa.Wehe i ka hoʻonā, holoi a maloʻo, a kaupaona i ka pohō kaumaha e hoʻoholo ai i ke kiʻekiʻe o ka ʻinoʻino (E hoʻomanaʻo: Ke hoʻomaʻamaʻa ʻia ka huahana, ʻo ka ʻike Fe i loko o ka lole abrasive a i ʻole ke one e hoʻoulu ai i nā kiko ʻōpala ma ka ʻili i ka wā o ka hoʻāʻo ʻana).
3. Hana poni
I ka nohona o kēia mau lā, hoʻomaʻamaʻa pinepine ʻia nā huahana kila kila i ka wā o ka hana ʻana, a he liʻiliʻi wale nō nā huahana e like me nā mea hoʻomehana wai a me ka liner dispenser wai ʻaʻole pono i ka polishing.No laila, pono kēia i ka hana polishing o ka mea maka.ʻO nā kumu nui e pili ana i ka hana polishing penei:
(1) nā hemahema ili o nā mea maka.E like me ka ʻoki ʻana, ka lua, ka pickling, etc.
(2) Ka pilikia o nā mea maka.Inā haʻahaʻa loa ka paʻakikī, ʻaʻole maʻalahi ka poni i ka wā e hoʻoliʻi ai (ʻaʻole maikaʻi ka waiwai BQ), a inā haʻahaʻa loa ka paʻakikī, maʻalahi ka ʻike ʻana o ka ʻili ʻalani ma ka ʻili i ka wā kiʻi hohonu. ka waiwai BQ.He maikaʻi nā waiwai BQ me ka paʻakikī kiʻekiʻe.
(3) No ka huahana huki hohonu, e ʻike ʻia nā wahi ʻeleʻele liʻiliʻi a me RIDGING ma ka ʻili o ka wahi me ka nui o ka deformation, no laila e pili ana i ka hana BQ.
4. Kūleʻa wela
ʻO ke kūpaʻa wela, ʻo ia hoʻi, hiki i ke kila kuhili ke hoʻomau i kona ʻano kino maikaʻi a me nā ʻano mechanical i nā wela kiʻekiʻe.
Ka hopena o ke kalapona: Hoʻokumu ikaika ʻia ke kalapona a hoʻopaʻa ʻia i nā kila kuhili ʻole austenitic.Nā mea e hoʻoholo ai i ka austenite a hoʻonui i ka ʻāina austenite.ʻO ka hiki o ke kalapona ke hana i ka austenite ma kahi o 30 mau manawa ma mua o ka nickel, a ʻo ke kalapona kahi mea interstitial e hiki ke hoʻonui nui i ka ikaika o ka austenitic stainless steel ma o ka hoʻoikaika ʻana i ka hopena paʻa.Hiki i ke kalapona ke hoʻomaikaʻi i ke koʻikoʻi o ka corrosion kū'ē o austenitic stainless steel i loko o ka chloride concentrated (e like me 42% MgCl2 boiling solution).
Eia nō naʻe, i ka austenitic stainless steel, ʻike pinepine ʻia ke kalapona ma ke ʻano he mea pōʻino, no ka mea ma lalo o kekahi mau kūlana (e like me ka welding a i ʻole ka hoʻomehana ʻana ma 450 ~ 850 ° C) i ke kūpaʻa corrosion o ke kila kila, hiki i ke kalapona ke launa pū me ke kalapona i ka. kila.Hoʻokumu ʻo Chromium i nā pūhui kalapona ʻano kiʻekiʻe-chromium Cr23C6, e alakaʻi ana i ka hoʻopau ʻana o ka chromium kūloko, kahi e hōʻemi ai i ke kūpaʻa corrosion o ke kila, ʻoi aku ka pale ʻana i ka intergranular corrosion.nolaila.ʻO ka hapa nui o nā chromium-nickel austenitic stainless steels i kūkulu hou ʻia mai ka makahiki 1960 he mau ʻano kalapona ultra-haʻahaʻa me kahi ʻano kalapona ma lalo o 0.03% a i ʻole 0.02%.Hiki ke ʻike ʻia e like me ka emi ʻana o ka ʻike kalapona, e emi ana ka maʻalahi o ka corrosion intergranular o ke kila.I ka wa o ka kalapona maʻiʻo ka haʻahaʻa ma mua o 0.02% loaʻa i ka loa maopopo hopena, a me kekahi mau hoʻokolohua i kuhikuhi i ka kalapona hoʻomāhuahua i ka pitting corrosion tendency o chromium austenitic kuhiliʻole kila.Ma muli o ka hopena maikaʻi ʻole o ke kalapona, ʻaʻole pono e hoʻomalu ʻia ka ʻike kalapona e like me ka haʻahaʻa e like me ka hiki i ke kaʻina hoʻoheheʻe ʻana o ke kila kila austenitic, akā i ke kaʻina hana ma hope o ka wela, ka hana anu a me ka mālama ʻana i ka wela e pale ai i ka piʻi ʻana o ke kalapona ma luna. ka ili o ke kila kila a pale aku i ka chromium carbide Precipitate.
5. Ke kū'ē i ka corrosion
Ke emi iho ka nui o nā ʻātoma chromium i ke kila ma mua o 12.5%, hiki ke hoʻololi koke ʻia ka mana electrode o ke kila mai ka hiki ʻole a hiki i ka hiki ke koho electrode.Kāohi i ka ʻino electrochemical.
Ke kūlana hoʻokō o ka pā kila kuhiliʻole
ʻO ka pā kila kila he ʻili maʻemaʻe, ka plasticity kiʻekiʻe, ka paʻakikī a me ka ikaika mechanical, a kūpaʻa i ka corrosion e nā waikawa, nā kinoea alkaline, nā hopena a me nā media ʻē aʻe.He kila hoʻoheheʻe ʻole ʻole ia, ʻaʻole naʻe me ka ʻōpala loa.ʻO ka pā kila kila e pili ana i kahi pā kila i kū i ka corrosion e nā media palupalu e like me ka lewa, ka mahu a me ka wai, aʻo ka pā hao-kūpono ʻana e pili ana i kahi pā kila i kū i ka corrosion e nā media corrosive kemika e like me ka waikawa, alkali, a me ka paʻakai.Ua puni ka pā kila kila ma mua o hoʻokahi haneli mai kona puka ʻana mai i ka hoʻomaka ʻana o ke kenekulia 20.
ʻO ka pā kila kila ka huaʻōlelo maʻamau no ka pā kila kila a me ka pā kila-ʻakika.Hoʻokomo ʻia i ka hoʻomaka ʻana o kēia kenekulia, ua hoʻokumu ka hoʻomohala ʻana i ka pā kila kila i kahi kumu waiwai nui a me ka ʻenehana no ka hoʻomohala ʻana i ka ʻoihana hou a me ka holomua ʻepekema a me ka ʻenehana.Nui nā ʻano o nā pā kila kila me nā waiwai like ʻole.Ua hoʻokumu mālie ʻo ia i kekahi mau ʻāpana i ke kaʻina hoʻomohala.
Wahi a ka hale, ua māhele ʻia i ʻehā mau ʻāpana: austenitic stainless steel, martensitic stainless steel (me ka paʻakikī paʻakikī o ka ua), ferritic stainless steel, a me austenitic plus ferritic duplex stainless steel.ʻO ka hui kemika nui a i ʻole kekahi mau hiʻohiʻona o ka pā kila i hoʻokaʻawale ʻia i loko o ka chromium stainless steel plate, chromium nickel stainless steel plate, chromium nickel molybdenum stainless steel plate, haʻahaʻa carbon stainless steel plate, high molybdenum stainless steel plate, high cleanly stainless steel plate. , etc.
E like me nā hiʻohiʻona hana a me ka hoʻohana ʻana i nā papa kila, ua māhele ʻia i nā papa kila kuʻemaka nitric acid-resistant, sulfuric acid-resistant stainless steel plates, pitting-resistant stainless steel plates, stress corrosion-resistant stainless steel plates, a me ka ikaika kiʻekiʻe. nā pā kila kila.Wahi a nā hiʻohiʻona hana o ka pā kila, ua māhele ʻia i loko o ka pā haʻahaʻa haʻahaʻa haʻahaʻa, ʻaʻole magnetic stainless steel plate, free-cutting stainless steel plate, superplastic stainless steel plate, etc. i nā hiʻohiʻona hoʻolālā o ka pā kila, nā ʻano hana kemika o ka pā kila a me ka hui pū ʻana o nā mea ʻelua.
Hoʻokaʻawale ʻia i loko o ka martensitic stainless steel, ferritic stainless steel, austenitic stainless steel, duplex stainless steel and precipitation hardening stainless steel, etc.Nui o ka hoʻohana ʻana Nā mea hoʻohana maʻamau: nā mea hoʻololi wela o ka pulp a me ka pepa, nā mea hana mīkini, nā mea pena, nā lako hana kiʻiʻoniʻoni, nā paipu, nā mea waho no nā hale ma nā kahakai, etc.
ʻO ka pā kila kila he ʻili maʻemaʻe, ka plasticity kiʻekiʻe, ka paʻakikī a me ka ikaika mechanical, a kūpaʻa i ka corrosion e nā waikawa, nā kinoea alkaline, nā hopena a me nā media ʻē aʻe.He kila hoʻoheheʻe ʻole ʻole ia, ʻaʻole naʻe me ka ʻōpala loa.
ʻO ka mānoanoa o ka wāwae a me ka mānoanoa maʻamau o ka pā kila kila
'O ka mānoanoa o ka wāwae 'o ia ho'i, 'a'ole 'oko'a loa ka mānoanoa maoli mai ka mānoanoa o ka mana'o (kapa 'ia ka mānoanoa lepili), 'o ia ka 'oko'a maika'i 'ole.Inā he 1.0MM ka mānoanoa o ka lepili, he 0.98MM-1.0MM ka mānoanoa o ka wāwae, a ʻo ka mānoanoa o ka wāwae hiki ke hoʻomaopopo ʻia he "mānoanoa", a ʻo ka mānoanoa maʻamau ka mānoanoa theoretical.Hoʻopaʻa inoa ʻia nā coils o ka wili kila ke haʻalele lākou i ka hale hana, e hōʻike ana i ka mānoanoa theoretical.ʻO kēia ka mānoanoa maʻamau.
