Stàilinn stainless 304 duilleag plàta stàilinn gun staoin 304 solaraiche, neach-dèanamh plàta SS 304

● Is e stàilinn stainless SAE 304 an stàilinn stainless as cumanta. Anns an stàilinn tha an dà chuid cromium (eadar 18% agus 20%) agus nicil (eadar 8% agus 10.5%), meatailtean mar na prìomh stuthan neo-iarann. Is e stàilinn stainless austenitic a th’ ann. Tha e nas lugha de ghiùlan dealain agus teirmeach na stàilinn gualain. Tha e magnetach, ach nas lugha magnetach na stàilinn. Tha e nas àirde an aghaidh creimeadh na stàilinn àbhaisteach agus tha e air a chleachdadh gu farsaing air sgàth cho furasta ‘s a tha e ann an diofar chumaidhean

● Chaidh an sgrìobhadh a leasachadh le WH Hatfield aig Firth-Vickers ann an 1924 agus chaidh a mhargaidheachd fon ainm malairt “Staybrite 18/8”.

● Tha e air a shònrachadh le SAE International mar phàirt de na ìrean stàilinn SAE aige. Taobh a-muigh nan SA tha e gu cumanta air ainmeachadh mar A2 stàilinn, a rèir ISO 3506 airson fasteners.[3] Anns a’ ghnìomhachas bathar còcaireachd malairteach tha e air ainmeachadh mar stàilinn gun staoin 18/8. Anns an t-siostam àireamhachd aonaichte is e UNS S30400 an ìre co-ionann Iapanach den stuth seo SUS304. Tha e cuideachd air a shònrachadh ann an ìre Eòrpach 1.4301.

Stàilinn 304 1.4301
● Canar 304 agus 304 fa leth ri stàilinn gun staoin 1.4301 agus stàilinn gun staoin 1.4307L. Is e Type 304 an stàilinn gun staoin as ioma-chruthach agus as fharsainge. Thathas fhathast a’ toirt iomradh air uaireannan leis an t-seann ainm 18/8 a tha a’ tighinn bhon sgrìobhadh ainmichte de sheòrsa 304 mar 18% cromium agus 8% nicil. Tha stàilinn stainless Type 304 na ìre austenitic a dh’ fhaodar a tharraing gu domhainn. Mar thoradh air an togalach seo tha 304 mar an ìre as làidire a thathas a’ cleachdadh ann an tagraidhean leithid sinc agus siospan. Is e seòrsa 304L an dreach gualain ìosal de 304. Tha e air a chleachdadh ann an co-phàirtean tomhas trom airson weldability nas fheàrr. Dh’ fhaodadh gum bi cuid de thoraidhean leithid truinnsearan agus pìoban rim faighinn mar stuth “dà-dhearbhte” a choinnicheas ri slatan-tomhais an dà chuid airson 304 agus 304L. Tha 304H, caochladh susbaint gualain àrd, cuideachd ri fhaighinn airson a chleachdadh aig teòthachd àrd. Tha na togalaichean a tha air an toirt seachad san duilleag dàta seo àbhaisteach airson toraidhean le rolla còmhnard air an còmhdach le ASTM A240 / A240M. Tha e reusanta a bhith an dùil gum bi mion-chomharrachadh anns na h-inbhean sin coltach ris an fheadhainn a tha air an toirt seachad san duilleag dàta seo ach nach eil riatanach gu riatanach.

● Saucepans
● Springs, sgriothan, cnothan & boltaichean
● Sinks & splash backs
● Pannal ailtireachd
● Tubing
● Uidheam cinneasachaidh taigh-grùide, biadh, bainne agus cungaidh-leigheis
● Stuthan slàinteachais agus amaran

Stainless steel grade 1.4301/304 also corresponds to: S30400, 304S15, 304S16, 304S31 and EN58E.

1.1.2 Cur an aghaidh creimeadh
304 has excellent corrosion resistance in may environments and when in contact with different corrosive media. Pitting and crevice corrosion can occur in environments containing chlorides. Stress corrosion cracking can occur above 60°C.

1.1.3 Seasmhachd teas
304 has good resistance to oxidation in intermittent service up to 870°C and in continuous service to 925°C. However, continuous use at 425- 860°C is not recommended. In this instance 304L is recommended due to its resistance to carbide precipitation. Where high strength is required at temperatures above 500°C and up to 800°C grade 304H is recommended. This material will retain aqueous corrosion resistance.

1.1.4 Dèanamh
Fabrication of all stainless steels should be done only with tools dedicated to stainless steel materials. Tooling and work surfaces must be thoroughly cleaned before use. These precautions are necessary to avoid cross contamination of stainless steel by easily corroded metals that may discolour the surface of the fabricated product.

1.1.5 Fuar-obrachadh
304 stainless steel readily work hardens. Fabrication methods involving cold working may require an intermediate annealing stage to alleviate work hardening and avoid tearing or cracking. At the completion of fabrication a full annealing operation should be employed to reduce internal stresses and optimise corrosion resistance.

1.1.6 Obair theth
Fabrication methods like forging, that involving hot working should occur after uniform heating to 1149-1260°C. The fabricated components should then be rapidly cooled to ensure maximum corrosion resistance.

1.1.7 Machinability
304 has good machinability. Machining can be enhanced by using the following rules: Cutting edges must be kept sharp. Dull edges cause excess work hardening. Cuts should be light but deep enough to prevent work hardening by riding on the surface of the material. Chip breakers should be employed to assist in ensuring swarf remains clear of the work. Low thermal conductivity of austenitic alloys results in heat concentrating at the cutting edges. This means coolants and lubricants are necessary and must be used in large quantities.

1.1.8 Làimhseachadh teas
304 stainless steel cannot be hardened by heat treatment. Solution treatment or annealing can be done by rapid cooling after heating to 1010- 1120°C.

1.1.9 Sàthachd
Fusion welding performance for type 304 stainless steel is excellent both with and without fillers. Recommended filler rods and electrodes for stainless steel 304 is grade 308 stainless steel. For 304L the recommended filler is 308L. Heavy welded sections may require post-weld annealing. This step is not required for 304L. Grade 321 may be used if post-weld heat treatment is not possible.

● Pìoba losgaidh gas sgudail peatrail;
● Pìob easgaidh einnsean;
● Slige boiler, iomlaid teas, pàirtean fùirneis teasachaidh;
● Pàirtean muffler airson einnseanan dìosail;
● Soitheach cuideam boiler;
● Carbadan còmhdhail ceimigeach;
● joints leudachaidh;
● Pìoban tàthaichte snìomhach airson pìoban fùirneis agus tiormairean;