Intshayelelo
Ibanga 304 liyi-stainless eqhelekileyo "ye-18/8″; yeyona ntsimbi ingenasici esetyenziswa kakhulu kwaye isetyenziswa kakhulu, efumaneka kuluhlu olubanzi lweemveliso, iifom kunye nokugqitywa kunayo nayiphi na enye. Ineempawu ezintle zokwakheka kunye nokudityaniswa. Ulwakhiwo olulungeleleneyo lwe-austenitic lweBanga 304 luyenza ikwazi ukutsalwa nzulu kakhulu ngaphandle kokutsalwa okuphakathi, nto leyo eye yenza olu didi luphambili ekwenziweni kwezinto ezitsalwayo ezingenasici ezifana nezinki, izinto ezingenanto kunye neembiza. Kwezi zicelo kuqhelekile ukusebenzisa iintlobo ezikhethekileyo ze-"304DDQ" (Umgangatho Wokuzoba Onzulu). Ibanga 304 lilula ukubhuleka okanye ukuqengqeleka lenziwe libe zizinto ezahlukeneyo zokusetyenziswa kwicandelo lemizi-mveliso, lezakhiwo, kunye nezothutho. Ibanga 304 likwaneempawu ezibalaseleyo zokutsalwa. Akufuneki ukutsalwa emva kokutsalwa kwesinyithi xa kudityaniswa iindawo ezincinci.
I-Grade 304L, uhlobo oluphantsi lwe-304, ayifuni i-annealing emva kokuwelda kwaye ngoko ke isetyenziswa kakhulu kwiinxalenye ze-heavy gauge (ngaphezulu kwe-6mm). I-Grade 304H enomxholo wayo ophezulu we-carbon isetyenziswa kumaqondo obushushu aphezulu. Isakhiwo se-austenitic sikwanika la manqanaba ukuqina okugqwesileyo, nokuba kuphantsi kwamaqondo obushushu abandayo.
Iipropati eziphambili
Ezi mpawu zichaziwe kwimveliso egoqwe ngomgca othe tyaba (ipleyiti, ishiti kunye nekhoyili) kwi-ASTM A240/A240M. Iimpawu ezifanayo kodwa ezingafanekiyo zichaziwe kwezinye iimveliso ezifana nombhobho kunye nebha ngokweenkcukacha zazo.
Ukwakhiwa
Uluhlu oluqhelekileyo lwezinto ezidityanisiweyo zeentsimbi ezingenasici zebanga lama-304 lunikwe kwitheyibhile 1.
| Ibanga | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 304 | umzuzu. ubuninzi. | - 0.08 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | - 0.10 |
| 304L | umzuzu. ubuninzi. | - 0.030 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 12.0 | - 0.10 |
| 304H | umzuzu. ubuninzi. | 0.04 0.10 | - 2.0 | - 0.75 | -0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | |
Itheyibhile 1.Uluhlu lokwakheka kwentsimbi engagqwali yebanga elingama-304
Iipropati zoomatshini
Iimpawu eziqhelekileyo zoomatshini beentsimbi ezingenasici zebanga lama-304 zinikwe kwitheyibhile yesi-2.
Itheyibhile 2.Iimpawu zoomatshini zentsimbi engagqwali yebanga lama-304
| Ibanga | Amandla okuThamba (MPa) min | Amandla okuvelisa 0.2% Ubungqina (MPa) min | Ubude (% kwi-50mm) min | Ukuqina | |
| Ubuninzi beRockwell B (HR B) | Ubuninzi beBrinell (HB) | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
| 304L | 485 | 170 | 40 | 92 | 201 |
| 304H | 515 | 205 | 40 | 92 | 201 |
| I-304H ikwayimfuneko yobukhulu be-ASTM No 7 okanye obukhulu. | |||||
Ukumelana nokugqwala
Igqwesile kwiindawo ezahlukeneyo zomoya kunye neendawo ezininzi ezibangela ukubola. Ixhomekeke ekuqhekekeni kwemigodi kunye nokuqhekeka kwe-chloride kwiindawo ezifudumeleyo, kwaye inokuqhekeka koxinzelelo ngaphezulu kwama-60°C. Ithathwa njengemelana namanzi okusela ane-chloride ezifikelela kwi-200mg/L kumaqondo obushushu aphakathi, incipha ukuya kwi-150mg/L kuma-60°C.
Ukumelana nobushushu
Ukumelana kakuhle kwe-oxidation kwinkonzo eqhubekayo ukuya kwi-870°C nakwinkonzo eqhubekayo ukuya kwi-925°C. Ukusetyenziswa rhoqo kwe-304 kuluhlu lwe-425-860°C akukhuthazwa ukuba ukumelana nokugqwala kwamanzi okulandelayo kubalulekile. I-Grade 304L iyakwazi ukumelana nokuna kwe-carbide kwaye ingafudunyezwa kuluhlu lobushushu olungentla.
I-Grade 304H inamandla aphezulu kumaqondo obushushu aphezulu ngoko ke isetyenziswa rhoqo kwizicelo zesakhiwo kunye nezoxinzelelo kumaqondo obushushu angaphezu kwama-500°C ukuya kuthi ga kwi-800°C. I-304H iya kuba buthathaka kumanqanaba obushushu angama-425-860°C; oku akuyongxaki kwizicelo zamaqondo obushushu aphezulu, kodwa kuya kubangela ukuncipha kokumelana nokugqwala kwamanzi.
Unyango lobushushu
Unyango lweSisombululo (Ukongeza) – Fudumeza ukuya kwi-1010-1120°C uze uphole ngokukhawuleza. La manqanaba awanakuqiniswa ngonyango lobushushu.
Ukuwelda
Ukuwelda okugqwesileyo kuzo zonke iindlela ezisemgangathweni zokudibanisa, zombini ezinezinyithi zokugcwalisa nezingenazo. I-AS 1554.6 ifanelekela ukuwelda kwangaphambili kwe-304 ngeGrade 308 kunye ne-304L ngeentonga okanye ii-electrodes ze-308L (kunye nee-silicon equivalent zazo eziphezulu). Amacandelo awelding anzima kwiGrade 304 anokufuna ukutshixwa emva kokuwelda ukuze kuxhathiswe ukugqwala okuphezulu. Oku akufuneki kwiGrade 304L. IGrade 321 ingasetyenziswa njengenye indlela endaweni ye-304 ukuba ukuwelda kwecandelo elinzima kuyafuneka kwaye unyango lobushushu emva kokuwelda alunakwenzeka.
Izicelo
Izicelo eziqhelekileyo ziquka:
Izixhobo zokulungisa ukutya, ingakumbi ekwenzeni ubhiya, ekulungiseni ubisi nasekwenzeni iwayini.
Iibhentshi zasekhitshini, izinki, imigqomo, izixhobo kunye nezixhobo
Iipaneli zokwakha, iireyili kunye nokuhlobisa
Izikhongozeli zeekhemikhali, kuquka nezothutho
Izitshintshi zobushushu
Izikrini ezilukiweyo okanye ezitshixiweyo zemigodi, ukumba imigodi kunye nokuhluza amanzi
Izibophelelo ezinemisonto
Imithombo
