Nkọwa
Igwe anaghị agba nchara 317L bụ ọkwa molybdenum nwere obere carbon, yana mgbakwunye chromium, nickel, na molybdenum. Nke a na-enye nguzogide corrosion ka mma yana nkwụsi ike na mwakpo kemịkalụ sitere na acetic, tartaric, formic, citric na sulfuric acid. 317L tubes / ọkpọkọ na-enye elu na-akpụ akpụ, na iguzogide nhụsianya mgbe welded, n'ihi obere carbon ọdịnaya. Uru agbakwunyere gụnyere mgbakasị ahụ maka mgbawa nguzogide, na ike tensile na okpomọkụ dị elu. Ọkwa 317l ígwè ọkpọkọ na-abụghị magnetik na annealed ọnọdụ. Agbanyeghị, enwere ike ịhụ ntakịrị ihe ndọta mgbe ịgbado ọkụ gasịrị.
317L arịa ọkpọkọ igwe anaghị agba nchara
tubes igwe anaghị agba nchara 317L nke Arch City Steel & Alloy nyere nwere ihe ndị a:
Nguzogide corrosion:
- Na-egosipụta nguzogide corrosion pụrụiche na gburugburu ebe dị iche iche, ọkachasị na gburugburu acidic chloride na kemịkalụ dịgasị iche iche.
- Ezigbo nguzogide corrosion na ngwa ebe enwere mmetọ kacha nta
- 317L igwe anaghị agba nchara tube / ọkpọkọ nwere obere carbon ọdịnaya na-enye ezigbo iguzogide intergranular corrosion
- A na-ebelata ọchịchọ nke nchara n'olulu mgbe ị na-akpakọrịta na chlorides, bromides, phosphorus acid, na iodides.
Nguzogide ọkụ:
- Nnukwu iguzogide oxidation n'ihi ọdịnaya chromium-nickel-molybdenum.
- Na-egosiputa ọnụ ọgụgụ dị ala nke scaling na okpomọkụ ruo 1600-1650°F (871-899°C), na ikuku nkịtị.
Njirimara ịgbado ọkụ:
- Ewezuga ịgbado ọkụ oxyacetylene, nke ọma na-agbado ya nke ọma site na ngwakọta na ụzọ mgbochi niile.
- Ekwesịrị iji igwe ndochi nwere nickel-base na chromium zuru oke na ọdịnaya molybdenum wee weld ụdị 317L nchara. Nke a na-enyere aka ịkwalite nguzogide corrosion nke ngwaahịa welded. AWS E317L/ER317L ma ọ bụ austenitic, obere carbon filler ọla nwere molybdenum dị elu karịa ọkwa 317L nwekwara ike iji.
Ịrụ ọrụ:
- Na-arụ ọrụ na obere ọsọ yana nri mgbe niile na-enyere aka belata ọchịchọ nke ọkpọkọ ọkwa 317L iji sie ike.
- Ọkwa 317L igwe anaghị agba nchara siri ike karịa igwe anaghị agba nchara 304 ma na-edobe mgbawa ogologo na eriri mgbe ejiri ya. N'ihi ya, a na-atụ aro iji mgbawa mgbawa.
Ngwa:
Ọkwa 317L igwe anaghị agba nchara tubes na-adịkarị eji maka njikwa mmanya, acid dyestuffs, bleaching ngwọta, acetylating na nitrating ngwakọta, wdg Ndị ọzọ kpọmkwem ngwa nke ọkwa 317L tubes na ọkpọkọ gụnyere:
- Ngwá ọrụ nhazi kemịkalụ na petrochemical
- Ngwa eji eji akwụkwọ na pulp
- Ngwa nhazi nri
- Condensers na ọdụ nuklia na fosil kwadoro
- Akụrụngwa akwa
ALA KEMỊKA:
| Ihe mejupụtara kemịkalụ % (ọnụahịa kacha elu, belụsọ na amapụtara) | |||||||||
| Ọkwa | 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 | Nkeji: 18.0 kacha: 20.0 | min: 3 kacha: 4 | Nkeji: 11.0 kacha elu: 15.0 | itule |
Oge nzipu: Ọktoba 09-2020