HOIKE
ʻO ke kila kila 317L kahi papa molybdenum i loaʻa ke kalapona haʻahaʻa, me nā hoʻohui o chromium, nickel, a me molybdenum. Hāʻawi kēia i ka ʻoi aku ka maikaʻi o ka corrosion a me ka hoʻonui ʻana i ke kūʻē ʻana i nā hoʻouka kemika mai ka acetic, tartaric, formic, citric, a me sulfuric acids. 317L paipu / paipu hāʻawi kiʻekiʻe kolo, a kū'ē i ka sensitization ke welded, no ka haʻahaʻa kalapona maʻiʻo. ʻO nā pōmaikaʻi i hoʻohui ʻia e pili ana i ke koʻikoʻi i ke kūʻē ʻana i ka rupture, a me ka ikaika tensile i nā wela kiʻekiʻe. ʻO nā paipu kila kila 317l he non-magnetic i ke kūlana annealed. Eia naʻe, hiki ke ʻike ʻia ka magnetism liʻiliʻi ma hope o ka welding.
317L NA PIPE OLE OLE
ʻO 317L mau paipu kila kila i hoʻolako ʻia e Arch City Steel & Alloy nā waiwai aʻe:
Paʻa ʻino:
- Hōʻike i ka pale ʻana i ka corrosion kūʻokoʻa i nā kaiapuni like ʻole, ʻoi aku hoʻi i nā kaiapuni chloride acidic a me kahi ākea o nā kemika.
- ʻOi aku ka pale ʻana i ka corrosion i nā noi kahi e pono ai ka hoʻohaumia liʻiliʻi
- 317L paipu kila kila / paipu me ka haʻahaʻa kalapona maʻiʻo hāʻawi maikaʻi kū'ē i intergranular corrosion
- Hoʻopau ʻia ke ʻano o ke kila i ka lua i ka wā e hui pū ai me nā chlorides, bromides, phosphorus acids, a me nā iodide.
Palena wela:
- ʻO ke kūpaʻa maikaʻi loa i ka oxidation ma muli o ka maʻiʻo chromium-nickel-molybdenum.
- Hōʻike i ka haʻahaʻa haʻahaʻa o ka scaling i nā mahana a hiki i 1600-1650 ° F (871-899 ° C), ma nā lewa maʻamau.
Nā hiʻohiʻona welding:
- Koe wale ka oxyacetylene welding, i wili maikaʻi ʻia e nā ʻano hoʻohui maʻamau a me nā ʻano kūʻē.
- Pono e hoʻohana i ka metala hoʻopiha me ka nickel-base a lawa ka chromium a me ka molybdenum e wili i ke kila Type 317L. Kōkua kēia i ka hoʻonui ʻana i ka pale ʻana i ka corrosion o ka huahana welded. ʻO AWS E317L/ER317L a i ʻole austenitic, nā metala hoʻopiha kalapona haʻahaʻa me ka ʻike molybdenum kiʻekiʻe ma mua o ka papa 317L hiki ke hoʻohana ʻia.
Mīkini:
- ʻO ka hana ʻana i nā māmā haʻahaʻa me nā hānai mau e kōkua i ka hōʻemi ʻana i ka manaʻo o nā paipu 317L papa e paʻakikī.
- ʻOi aku ka paʻakikī o nā paipu kila kila 317L ma mua o 304 stainless a pili i ka puʻupuʻu lōʻihi a me ke kaula ke hana ʻia. No laila, ʻoi aku ka maikaʻi o ka hoʻohana ʻana i nā chip breakers.
Nā noi:
Hoʻohana maʻamau ʻia nā paipu kila kila kila 317L no ka lawelawe ʻana i ka waiʻona, nā mea waiʻawaʻawa, nā hoʻonā bleaching, acetylating a me nā hui nitrating, etc.
- Mea hana kemika a me ka petrochemical
- ʻO nā lako hana pepa a me ka pulp
- Mea hana meaʻai
- Nā condensers ma nā kahua hoʻokele nuklea a me ka mōʻalihaku
- Mea lole lole
NA WAIWAI KEMI:
| Hoʻohui Kemika maʻamau % (nā waiwai kiʻekiʻe, ke ʻole ka ʻike ʻia) | |||||||||
| Papa | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| 317L | 0.035 max | 2.0 max | 0.75 max | 0.04 max | 0.03 max | min: 18.0 ka nui:20.0 | min: 3 ka nui: 4 | min: 11.0 ka nui: 15.0 | kaulike |
Ka manawa kau: Oct-09-2020