Intshayelelo
IBanga lama-304 ngowona mgangatho “18/8″ engenastainless; yeyona iguquguqukayo kwaye isetyenziswa kakhulu intsimbi engatyiwayo, efumaneka kuluhlu olubanzi lweemveliso, iifom kunye nokugqitywa kunayo nayiphi na enye. Ineempawu ezigqwesileyo zokubunjwa nokuwelda. Ulwakhiwo olulungeleleneyo lwe-austenitic lweBanga lama-304 luyenza ibe nzulu kakhulu izotywe ngaphandle kokwenza umzobo ophakathi, nto leyo eyenze umzobo wenziwa phakathi iindawo ezingenastainless ezifana neesinki, i-hollow-ware kunye ne-soucepans kwezi zicelo kuqhelekile ukusebenzisa iintlobo ze-"304DDQ" (Ubunjani boMzobo obunzulu) iBanga lama-304 liyibrake okanye i-roll eyenziwe ngeendlela ezahlukeneyo kwi-industry, i-architectural, kunye ne-transportation fields i-post-welding iyimfuneko amacandelo.
IBakala 304L, i-low carbon version ye-304, ayifuni i-post-weld annealing kwaye isetyenziswa kakhulu kwi-heavy gauge components (ngaphezulu kwe-6mm). IBanga le-304H elinomxholo walo ophezulu wekhabhoni lifumana ukusetyenziswa kumaqondo obushushu aphezulu. Isakhiwo se-austenitic sikwanika la mabanga ukuqina okugqwesileyo, kude kube phantsi ukuya kumaqondo obushushu e-cryogenic.
Iimpawu eziphambili
Ezi zakhiwo zichazwe kwimveliso ephothiweyo (ipleyiti, iphepha kunye nekhoyili) kwi-ASTM A240/A240M. Iipropati ezifanayo kodwa zingafane zichazwe kwezinye iimveliso ezinjengombhobho kunye nebar kwiinkcukacha zazo.
Ukuqamba
Uluhlu oluqhelekileyo lokuqulunqa kwibakala lama-304 iintsimbi ezingenasici zinikwe kwitheyibhile yoku-1.
| IBanga | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 304 | imiz. max. | - 0.08 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | - 0.10 |
| 304L | imiz. max. | - 0.030 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 12.0 | - 0.10 |
| 304H | imiz. max. | 0.04 0.10 | - 2.0 | - 0.75 | -0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | |
Uluhlu loku-1.Ukuqulunqwa koluhlu lwe-304 grade steel stainless
Iipropati zoomatshini
Iimpawu eziqhelekileyo zoomatshini kwibakala lama-304 iintsimbi ezingenasici zinikwe kwitheyibhile yesi-2.
Uluhlu lwesi-2.Iimpawu zeMechanical ze-304 grade steel stainless
| IBanga | Amandla e-Tensile (MPa) min | Amandla eSivuno 0.2% Ubungqina (MPa) min | Ubude (% kwi-50mm) min | Ukuqina | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
| 304L | 485 | 170 | 40 | 92 | 201 |
| 304H | 515 | 205 | 40 | 92 | 201 |
| I-304H ikwanayo nemfuneko yobukhulu obuziinkozo be-ASTM enguNombolo yesi-7 okanye erhabaxa. | |||||
Ukunyangwa kokuMhlwa
Ugqwesileyo kuluhlu olubanzi lwemekobume ye-atmospheri kunye nemithombo yeendaba ezininzi ezonakalisayo. Ixhomekeke kwimingxuma kunye nokuhlwa kwemingxuma kwindawo efudumeleyo yekloridi, kunye nokucinezela ukuqhekeka komhlwa ngaphezulu kwe-60°C. Ithathwa njengokumelana namanzi aselwayo ukuya kuthi ga kwi-200mg/L yekloridi kumaqondo obushushu akwindawo engqongileyo, yehliswa malunga ne-150mg/L ku-60°C.
Ukumelana nobushushu
Ukumelana ne-oxidation elungileyo kwinkonzo yethutyana ukuya kuma-870°C nakwinkonzo eqhubekayo ukuya kuma-925°C. Ukusetyenziswa ngokuqhubekayo kwe-304 kwi-425-860 ° C uluhlu alukhuthazwa ukuba ukuxhatshazwa kwe-corrosion yamanzi okulandelayo kubalulekile. IBanga le-304L lixhathisa ngakumbi kwimvula ye-carbide kwaye inokufudumeza kuluhlu lobushushu obungentla.
IBanga lama-304H linamandla aphezulu kumaqondo obushushu aphezulu ngoko ke lisoloko lisetyenziselwa ulwakhiwo kunye noxinzelelo oluqulathe izicelo kumaqondo obushushu angaphezulu kwama-500°C ukuya kutsho kuma-800°C. I-304H iya kwaziswa kuluhlu lweqondo lokushisa lwe-425-860 ° C; oku akuyongxaki kwizicelo zobushushu obuphezulu, kodwa iyakukhokelela ekuncitshisweni kokunganyangeki kwe-aqueous corrosion.
Unyango lobushushu
Unyango lwesisombululo (Annealing) - Ukushisa kwi-1010-1120 ° C kwaye upholise ngokukhawuleza. La mabanga akakwazi ukuqina ngonyango lwe-thermal.
Ukuwelda
Ukuweldability okugqwesileyo ngazo zonke iindlela zokudityaniswa okusemgangathweni, zombini kunye nangaphandle kweentsimbi zokuzalisa. AS 1554.6 pre-qualifying welding of 304 with Grade 308 and 304L with 308L rods or electrode (kunye ne-silicon ephezulu elinganayo). Amacandelo e-welded welded kwiBanga lama-304 anokufuna i-post-weld annealing ukwenzela ukuxhathisa okukhulu kwi-corrosion. Oku akufuneki kwiBakala 304L. IBakala 321 linokusetyenziswa njengenye indlela ye-304 ukuba i-welding yecandelo elinzima liyafuneka kwaye unyango lwe-post-weld heat treatment alunakwenzeka.
Usetyenziso
Usetyenziso oluqhelekileyo lubandakanya:
Izixhobo zokulungisa ukutya, ngakumbi ekudidiyeleni ibhiya, ekusetyenzweni kobisi kunye nokwenza iwayini.
Iibhentshi zasekhitshini, iisinki, izikhonkwane, izixhobo kunye nezixhobo zombane
Iphaneli yoyilo lwezakhiwo, iirailings & trim
Izikhongozeli zemichiza, kubandakanywa nezothutho
IziTshintshiso zoBubushushu
Izikrini ezilukiweyo okanye ezidityanisiweyo zokwembiwa kwemigodi, ukugrumba kunye nokuhluzwa kwamanzi
Iifasteners ezinemisonto
Imithombo
