ʻO nā ʻano hana maʻamau no ka mālama ʻeleʻele o ke kila kila

Kumu: Ma ka hana kemika, hana ʻia kahi ʻāpana kiʻi ʻoniʻoni ma luna o ka ʻili metala, a loaʻa ka mālama ʻana i ka ʻili ma o ka kiʻiʻoniʻoni oxide. ʻO ke kumu i hoʻohana ʻia i loko o kēia kaʻina hana lapaʻau ʻili, ʻo ia ka hana ʻana i kahi kiʻiʻoniʻoni oxide ma ka ʻili metala ma lalo o ka hana a nā mea hana like, hiki ke hoʻokaʻawale i ka metala mai ka hoʻopili pololei ʻana me ke kaiapuni o waho.

ʻO nā ʻano hana maʻamau no ka ʻeleʻele ʻana i ke kila stainless penei:

Māhele 1: Ke ʻano kala ʻākaika

(1) Keʻano dichromate hehee. E hoʻokomo i nā ʻāpana kila kila i loko o ka solution sodium dichromate i hoʻoheheʻe ʻia a hoʻoulu maikaʻi ʻia no 20-30 mau minuke e hana i kahi kiʻiʻoniʻoni ʻeleʻele. Wehe a hooluolu, a laila holoi me ka wai.

(2) Chromate ʻeleʻele kemika oxidation ala. ʻO ke kaʻina hana o ka hoʻololi kala o kēia papa kiʻiʻoniʻoni mai ka mālamalama a i ka pōʻeleʻele. Ke hoʻololi ʻia mai ka uliuli a i ka uliuli hohonu (a i ʻole ʻeleʻele maʻemaʻe), ʻo 0.5-1 mau minuke wale nō ka manawa. Inā ʻalo ʻia kēia wahi maikaʻi loa, e hoʻi i ka ʻeleʻele māmā a hiki ke wehe ʻia a waiho ʻia.

2. Hiki i ke ala vulcanization ke loaʻa i kahi kiʻiʻoniʻoni ʻeleʻele nani, pono e ʻoki ʻia me ka aqua regia ma mua o ka oxidation.

3. ʻO keʻano hoʻoheheʻe alkaline. ʻO ka alkaline oxidation kahi hopena i hoʻomākaukau ʻia me ka sodium hydroxide, me ka manawa oxidation o 10-15 mau minuke. ʻO ke kiʻiʻoniʻoni ʻeleʻele ʻeleʻele ke kūpaʻa maikaʻi a ʻaʻole koi i ka lāʻau lapaʻau. ʻO ka manawa paʻakai ma waena o 600-800 mau hola. Hiki ke mālama i ka maikaʻi maikaʻi o ke kila kila me ka ʻole.

Māhele 2: Electrolytic oxidation ala

Hoʻomākaukau hoʻoponopono: (20-40g/L dichromate, 10-40g/L manganese sulfate, 10-20g/L boric acid, 10-20g/L/PH3-4). Hoʻopiliʻia ke kiʻi kala i loko o ka 10% HCl solution ma 25C no 5 mau minuke, aʻaʻohe hoʻololi kala a peeling paha o ka papa kiʻiʻoniʻoni i loko, e hōʻike ana i ke kūpaʻa maikaʻi o ka corrosion o ka papa kiʻi. Ma hope o ka electrolysis, 1Cr17 ferritic stainless steel ua ʻeleʻele wikiwiki, a laila paʻakikī e kiʻi i kahi kiʻi ʻoniʻoni ʻeleʻele me ke kala like ʻole, elasticity, a me kahi ʻano o ka paʻakikī. He kaʻina hana maʻalahi nā hiʻohiʻona, ka wikiwiki ʻeleʻele wikiwiki, ka hopena kala maikaʻi, a me ke kūpaʻa corrosion maikaʻi. He kūpono ia no ka hoʻomaʻamaʻa ʻeleʻele o ka ʻili o nā ʻano kila kila a no laila he waiwai kūpono.

Māhele 3: QPQ Heat Treatment Method

Hanaʻia i nā mea hana kūikawā, paʻa ka papa kiʻiʻoniʻoni a maikaʻi ke kū'ēʻana i ke kapa; Eia nō naʻe, ma muli o ke kila kuhiliʻole, ʻoi aku ka nui o ka austenitic stainless steel, ʻaʻole i like ka hiki ke pale i ka ʻōpala e like me ka wā ma hope o ka mālama ʻana i ka QPQ. ʻO ke kumu, ua hōʻino ʻia ka ʻike chromium ma ka ʻili o ka austenitic stainless steel. No ka mea, i ka hana mua o QPQ, ʻo ia ke kaʻina hana nitriding, e hoʻokomo ʻia ke kalapona a me ka nitrogen, e hōʻino ai i ka ʻili o ka ʻili. He maʻalahi ka ʻōpala, ʻeleʻele wale ka paʻakai paʻakai i loko o kekahi mau hola. Ma muli o kēia nāwaliwali, ua kaupalena ʻia kāna hana.