Iwe unoona 304L simbi isina tsvina pamapepa akawanda, ingangoita ruzha rwekumashure. Iyo yakaderera-kabhoni musiyano we304, yakanaka kune welding, inoramba corrosion-munhu wese anozviziva, handiti? Ndiwo musungo wekutanga. Mukuita, iro gaka riri pakati peASTM spec uye maitiro azvinoita mune yekutanga kana pane muchina chitoro pasi ndipo panoitika basa chairo. Ndakaona mapurojekiti akawandisa achigumburwa nekuti mumwe munhu akangomaka bhokisi re304L asingafunge nezve kuumbwa chaiko, kupisa, kana kuti chii chachanyatso fumurwa. Harisi bara remashiripiti; chinhu chine quirks aunodzidza nekusvibisa maoko ako.
Iyo L Haisi Tsamba Yako
Wese munhu anotarisa pane kabhoni yemukati, max 0.03%, kudzivirira kunaya kwecarbide panguva yewelding. Ndiro bhuku. Asi mukudyara kwekudyara, chinova chingwa chedu nebhota pa Qingdao Qiangsenyuan Technology Co., Ltd.(QSY), Jehovha anoreva chimwe chinhu panguva yokudira. Iyo yakanyunguduka inoita zvakasiyana. Iyo ine husimbe, ine mvura shoma pane chiyero 304. Kana geji rako uye sisitimu yekusimuka yakagadzirirwa maitiro ekuyerera e304, unogona kupedzisira uine mitruns kana shrinkage nyaya muzvikamu zvakakora zvine 304L. Icho chinhu chakajeka, asi chinokumanikidza kugadzirisa maitiro uye maitiro. Takadzidza izvi kare kare, kwete kubva mubhuku rekushandisa, asi kubva muboka remavharuvhu aifanira kubviswa.
Zvadaro pane post-casting heat treatment. Solution annealing yakakosha, asi tembiricha hwindo rinonzwa kusimba. Iwe urikuvavarira kunyungudutsa chero carbides uye kudzorera iwo chromium carbides mumhinduro, asi iwe zvakare haugone kukwirisa zvakanyanya. Isu tinomhanyisa kazhinji pakati pe ° C, ichiteverwa nekudzima nekukurumidza. Iyo yekudzima ine basa zvakare. Mvura ine hutsinye uye inogona kukonzera kukanganisa pane dzakaoma, dzakatetepa-madziro castings; dzimwe nguva isu tinosarudza kumanikidzirwa kudzima mhepo kune dzimwe nhengo dzakatetepa. Iko kufona kwekutonga kunoenderana nechikamu geometry, chimwe chinhu chaunovaka kunzwa kwekufamba kwenguva.
Uye welding? Chokwadi, zviri weldable. Asi mune yedu CNC machining uye kupedzisa dhipatimendi, isu tinowanzo kuwana akakandwa zvikamu zvinoda weld kugadziriswa kana kusangana. Iyo weld pachayo inogona kunge ine ruzha, asi iyo inopisa-inokanganisa nzvimbo (HAZ) pa304L, nepo ichiramba kunzwisiswa, inogona kuramba ichiitika microstructural shanduko inokanganisa nharaunda yekudzivirira kwecorrosion kana ukasangwarira nekudzora tembiricha. Zvakanaka, asi hazvikundiki. Iwe uchiri kuda welder anonzwisisa zvinyorwa, kwete chete maitiro.
Machining 304L: Iyo Gummy Reality
Apa ndipo panosangana dzidziso nemudziyo wekucheka, kazhinji neinoodza mwoyo screech. 304L inozivikanwa nekuomesa basa. Kana chishandiso chako chisina kupinza, kana mafidhi ako nekumhanya kwakadzimwa, kana ukagara kunyangwe kwechinguvana, unoomesa nzvimbo, uchiita kuti inotevera ipfuure hope. Haina kurira zvakanaka; inoita kuti iite tambo yakareba, ine tambo inorwadza uye njodzi yekuchengetedza.
Takagadzirisa mitemo mishoma muchitoro chedu. Positive rake geometry, pasina mubvunzo. Yakapinza, yakavharwa carbide inoisa-tave nemhedzisiro ine hunhu neAlTiN machira. Nguva dzose, kudya kwehasha. Iwe haugoni kuva anotya; iwe unofanirwa kupinda pasi pebasa-rakaoma layer. Inotonhorera haigone kutaurirana, uye yakawanda yacho, kwete yekutonhodza chete asi kubatsira kutyora chip. Isu tinomhanya yakaderera pamusoro pekumhanya kupfuura zvaungaite kune yakajeka kabhoni simbi, asi nechiyero chepamusoro chekudya. Icho chiitiko chekuenzanisa chaunotora kune chero basa chairo. Imba yakaoma yepombi ine madziro matete michina akasiyana pane yakasimba flange.
Iyo yakaipisisa kana iwe ukawana kukanda nekuoma kusingaenderane. Dzimwe nguva, nekuda kwekusiyana kudiki kwemitengo yekutonhora muforoma, unogona kuwana mavara akaoma kupfuura mamwe. Chimbo chako chiri kurira, ipapo chinoerekana charira chopisa. Iwe unofanirwa kumira, kutarisa, pamwe kunyange anneal chidimbu chose zvakare kana chakashata. Ndicho chimwe chikonzero nei kudzora kwemaitiro kubva pakunyungudika kusvika kusvika pakupisa kurapwa kwakakosha. Kambani yakadai QSY, nemakumi emakore mukati shell mold casting uye Investment casting, inovaka iyo ruzivo rwemasangano mukufamba kwebasa kuderedza izvi zvakasiyana-siyana, asi zvinoshamisa zvichiri kuitika.
Corrosion: Zviri Zvemamiriro ekunze, Kwete Chete Giredhi
Iyi ndiyo pfungwa isiriyo huru. Vanhu vanotsanangudza 304L yekudzivirira ngura segumbeze izwi. Asi rudzii rwekuora? Atmospheric? Chokwadi, zvakanakisa. Kuratidzwa kwemakemikari kwakapfava? Pamwe zvakanaka. Asi ini ndaona kutadza mune chaiyo, nzvimbo dzakaipa.
Chlorides ndiyo arch-nemesis. Kunyangwe pakupisa kwekamuri, chloride ions inogona kukonzera gomba uye kukoromoka. Takapa 304L zvigadziriso zvemitsetse yemvura yemumhenderekedzo yegungwa isiri yakakosha. Vaitaridzika zvakanaka kwegore, vobva vatanga kudonha kubva mumakomba epinprick pasi pemateya ekudzivirira panounganidzwa hunyoro. The material was to spec, but the environment was wrong. Kune izvo, iwe unofanirwa kusvetukira ku316L ne molybdenum. Chidzidzo chakanga chisiri pamusoro pemhando yesimbi; yaive nezve application engineering.
Zvadaro pane intergranular corrosion. Iyo L giredhi inodzivirira kubva pairi kubva kune welding, asi kana chikamu chakabatwa mu450-850 ° C renji kwenguva yakareba panguva yebasa - toti, padyo nenzvimbo yekupisa-kukurudzira kunogona kuitika nekufamba kwenguva. Iko kutadza kufamba zvishoma nezvishoma. Iwe unofanirwa kufunga nezvehupenyu hwese kutenderera kwechikamu, kwete chete magadzirirwo acho.
Iyo Alloy Nuance muMulti-Material Shop
Kushanda munzvimbo yakaita seyedu QSY, kwatinobata zvese kubva simbi yakakandwa ku special alloys kufanana ne-nickel-based, inokupa maonero. 304L haionekwi iri yega. Icho chikamu che spectrum. Mukana wayo mukuru mutengo uye kuwanikwa kwese maringe nepamusoro-nickel alloys. Asi miganhu yayo inotsanangura nzvimbo yayo.
Semuyenzaniso, kana mutengi achida kusimba kwekushisa kwepamusoro, tinovaendesa kure ne304L vakananga kwedu nickel-based alloys. Pavanoda zvakanyanya kuomarara kuramba mukudzikisa maasidhi, pamwe inguva yekuti cobalt-based alloys. 304L inogara munzvimbo inotapira yekuita kwakanaka kwese uye kugadzirwa kwemhando yakakura yezvikamu zveindasitiri - dzimba dzepombi, miviri yevharuvhu, magadzirirwo echikafu, dhizaini yekuvaka. Ibhiza rebasa.
Asi kunyangwe sebhiza rebasa, kutsvaga zvinhu zvine basa. Isu tinoteerera zvakanyanya kune melt chemistry. Sarufa yakawandisa zvishoma inogona kuvandudza machinability asi ichikuvadza corrosion resistance. Iyo chaiyo chiyero chesilicon inogona kuvandudza fluidity yekukanda. Aya ndiwo madiki-spec dhairekitori anosiyanisa batch iyo michina yakaita sebhota uye inogara kwemakumi emakore kubva kune imwe inokonzera misoro kubva pazuva rekutanga.
Kupedzisa Pasina Uta
Saka, kwete, 304L haingori chinhu. Icho chinhu chine kuita kwechokwadi kwakavhurwa (kana kukanganiswa) mune ruzivo rwekuita. Pakupera kwezuva, kubudirira kwechikamu che304L kunoenderana zvakanyanya nekuita kwemuvambi, hunyanzvi hwemuchina, uye mamiriro einjiniya ezvakatipoteredza sezvaanoita pamusangano wechemistry ASTM A743. Kudyidzana pakati pezvinhu uye mugadziri. Iwe haugone kungozviodha kubva kukhathalogi uye kutarisira kukwana. Iwe unofanirwa kunzwisisa hunhu hwayo, maitiro ayo, uye kuremekedza miganhu yayo. Ndizvo zvaunodzidziswa nemakumi matatu emakore ekugadzira nekugadzira—kuona simbi, kwete nhamba chete.
