ʻO ka pickling a me ka passivation o ka kuʻekuʻe kila kila - ka lakio o ka wai pickling a me ka wai passivating

He aha ka pickling a me ka passivation lapaʻau o kuhiliʻole kila kuʻekuʻe?

E ʻike ʻia nā unahi ʻeleʻele a me ka melemele i ka wā e hana ʻia ai ke kuʻekuʻe kila kuhili. I mea e hoʻomaikaʻi ai i ka hiʻohiʻona a me ke kūpaʻa ʻana o ka kuʻekuʻe kila kila, pono e ʻoki ʻia ka kuʻekuʻe kila stainless i hana ʻia. ʻO ka pickling kuʻekuʻe kila kila ka wehe ʻana i ka unahi oxide i hana ʻia ma hope o ke kuʻi ʻana a me ka hana wela kiʻekiʻe e hana i ka ʻālohilohi a ʻālohilohi. ʻO ka passivation kuʻekuʻe kila kila ka hana ʻana i kahi kiʻi ʻoniʻoni me ka chromium ma ke ʻano he mea nui ma ka ʻili i mālama ʻia e pale ai i ka lua o ka oxidation, a laila e hoʻomaikaʻi ai i ka maikaʻi anti-corrosion o ka kuʻekuʻe kila kila a hoʻonui i ke ola lawelawe o nā mea hana.

Hoʻohana pinepine ʻia ka pickling passivation paste a me ka pickling passivation wai. Hoʻopili ʻo Pickling passivation paste i ka pickling a me ka passivation a hoʻopau iā ia i hoʻokahi ʻanuʻu, e hoʻololi i ke kaʻina hana pickling a me ka passivation. ʻenehana loea, hana maʻalahi, hana maʻalahi a me ke kumu kūʻai haʻahaʻa. He kūpono no ka pena ʻana i ka ʻāpana nui a me ke anawaena nui o nā paipu kila kila. ʻO ka hopena passivation pickling he kūpono ia no ka hana ʻana o nā mea hoʻopili paipu kila kila liʻiliʻi.

E kamaʻilio e pili ana i ka ratio hui ʻana o nā wai pickling maʻamau a me nā wai passivating no nā paipu kila kila. ʻO ka wai pickling, ka wai passivation a me ka hoʻopili paʻi pickling

ʻO ka hopena pickling: 20% nitric acid + 5% hydrofluoric acid + 75% wai

ʻO ka hopena passivation: 5% waikawa nitric + 2% potassium dichromate + 93% wai

Nā ʻanuʻu no ka hoʻohana ʻana i ka hopena passivation pickling steel:

1. E mālama i nā ʻaila ʻaila ma ka ʻili o ka kuʻekuʻe kila kila a poni;

2. E ninini i ka hopena passivation i loko o kahi ipu plastik. Ma muli o ke ʻano o ka kuʻekuʻe kila kila a me ke kiʻekiʻe o ka oxidation, hiki iā ʻoe ke hoʻohana i ka hopena kumu a hoʻoheheʻe paha iā ia i ka ratio o 1:1-4 ma mua o ka hoʻohana ʻana;

3. E hoʻokuʻu i ka kuʻekuʻe wāwae kila e mālamaʻia i loko o ka wai, maʻamau i ka mahana maʻamau, aiʻole hiki ke hoʻomehanaʻia i ka 40-50 degrees no ka hanaʻana. ʻO 3-20 mau minuke a ʻoi aʻe ka manawa hoʻonā, a hiki ke hoʻoholo ʻia ka manawa kikoʻī a me ka mahana e like me ke kūlana maoli;

4. A hiki i ka lepo ma luna o ka ili o ka kuhiliʻole kuʻekuʻe lima, a ike uniformly malamalama kala keʻokeʻo, 'o ia hoʻi ka pickling a me ka passivation pau, lawe aku i ka kuhiliʻole kila kuʻekuʻe, holoi me ka wai maʻemaʻe, a maloʻo.

Ma hope o ka pickling a me ka passivation mālama ʻana i nā mea hoʻopili paipu kila kila, ʻaʻole ia e hoʻopilikia i ka conductivity o ka mea, hoʻololi i ke ʻano mea, a i ʻole e pili i nā waiwai paʻa e like me ka pipiʻi.