Paunonzwa '420 simbi isina tsvina', chinhu chekutanga chinouya mupfungwa 'mapanga'. Uye hauna kukanganisa, asi ndipo panotangirawo kuwedzeredza. Munyika yekutanga uye yekugadzira, kubata 420 se "giredhi rekucheka" inzira inokurumidza yekusangana nematambudziko. Iyo martensitic stainless, zvinoreva kuti yakaoma, asi iyo hunhu munondo unocheka kaviri. Ndakaona mapurojekiti akawandisa uko iyo spec yakadana 420 nekungoti raive zita rinozivikanwa, pasina kunyatsonzwisisa maitiro ayo panguva uye mushure mekugadzirisa. Mukaha uripo pakati pezvimiro zvawo zvekufungidzira uye chokwadi chekushandura kukanda kana bhawa stock kuita chikamu chakapedzwa ndipo panoitika basa chairo-uye zvidzidzo zvinonakidza-zvinoitika.
The Kuoma Chokwadi uye Machining Headaches
Ngatitaurei nezve musimboti we420: yayo 12-14% chromium yemukati ine yakakwana kabhoni (yakatenderedza 0.15% min) kubvumira kuoma. Pabepa, unoribata kupisa uye kuwana zvakaringana kupfeka kuramba uye kusimba. Mukuita, kunyanya mukudyara kwekudyara uko kambani yangu, QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., inyanzvi mukati, iyo as-cast chimiro chakakosha. Kana iwe usingatarise kutonhora kubva pakudururwa, unogona kuwana yakawandisa yakachengetwa austenite kana isina kuenzana carbide formation. Izvo zvinotungamira mukusaenderana kuomarara gare gare, zvisinei kuti yakakwana sei yako inotevera kupisa kupisa kutenderera. Takadzidza izvi kare nebatch yezvikamu zvevharuvhu. Iyo spec yakadana HRC 48-52 mushure mekuoma uye kudziya. Isu takawana zvese kubva ku44 kusvika ku55 kuyambuka batch imwechete. Mupari wemhosva? Diki, misiyano isingaite muhukobvu hwemadziro emakanda ayo akachinja chiyero chekusimba. Pepa redata harikuyambira nezvazvo.
Ipapo kunouya machining. Pre-yakaomeswa 420 inoputika. Inoda kushanda-kuomesa. Iwe unofunga kuti uri kutora kucheka kwakanaka, uye kamwe kamwe chishandiso chako chiri kutsva nekuti zvinhu zvakangowedzera kuoma pasi pekucheka. Tinoita zvakawanda CNC machining mumba panzvimbo yedu (unogona kuona zvimwe zvatinogona pa https://www.tsingtaocnc.com), uye 420 inoda kuremekedzwa. Turusi geometry, kukoira, uye mareti ezvekudya handiwo maitiro akanaka pano; ndiwo mutsauko pakati pebasa rinoita purofiti uye kubvisa seti yese yezvinodhura zvinokandwa. Sarudzo inotonhorera uye kuyerera inova nzvimbo huru yekutaura pauriri hwechitoro. Haisi 'set uye kukanganwa' zvinhu senge simbi dzakapfava.
Ndinoyeuka chirongwa chekugadzira chikafu. Mutengi aida kuti mupendero ubate kupera kwakapinza kwenguva refu. Isu takakurudzira mazana mana nemakumi maviri, asi ivo vaive nebhajeti rakasimba uye vaida kushoma post-kukanda basa. Takaedza kuendesa ma castings ari padyo net shape sezvinobvira kudzikisa machining mutengo. Kufamba kwakashata. Iyo diki chiyero uye yepasi decarb kubva pakukandira yaireva kuti yekutanga machining pass yaive isingaenderane, zvichitungamira kune chatter uye yakashata edge mhando. Takapedzisira tava kuwedzera yunifomu yakaoma machining uye nhanho yekuchenesa isati yasvika yekupedzisira, iyo yakadya purofiti asi yakaendesa chikamu. Chidzidzo: ne420, dzimwe nguva haugone kusvetuka matanho kuchengetedza mutengo. Nyaya yacho ichaita kuti iwe ubhadhare gare gare.
Corrosion Resistance: Iyo Stainless Misconception
Iyi ihombe. Vanhu vanoona 'isina tsvina' uye vanofunga kuti yakafanana ne304 kana 316. Hazvisi. 420 ine yakaderera corrosion resistance. Iyo chromium iripo kunyanya yekuomesera, kwete yekugadzira robust passive layer. Munzvimbo ine ngura zvinyoro nyoro, semhepo ine hunyoro kana kuti pano neapo kusangana nemvura, zvakanaka. Asi isa inogara ichisangana nema chlorides kana maasidhi, uye inozoona nekugomba. Taive nemutengi muindasitiri yemugungwa aida 420 yediki, yakakwira-simba rekusimbisa. Vakanga vachitsiva imwe carbon steel part yaikurumidza kuita ngura. Chikamu che420 chakagara kwenguva refu, asi mukati megore, chakaratidza kugomba. Pakushandisa kwavo, 17-4 PH kana kunyange 316 ine kuomeswa kwakakodzera kwaizove kuri nani, asi mutengo wepamberi wakavavhundutsa. Isu takadzidza kuve neiyo hurukuro yekuora pamberi, nguva imwe neimwe, kunyangwe zvichireva kusundira kumashure pane yekutanga sarudzo.
Iyo corrosion resistance inotsamira zvakare zvakanyanya pakupera kwepamusoro. Nzvimbo yakakwenenzverwa 420 ichaita zvirinani pane yakakasharara yakagadzirwa kana se-yakandwa imwe. Izvi zvinobatana zvakananga kune yedu shell mold casting uye Investment casting maitiro. Nekudyara kwekudyara, isu tinogona kuwana yakanaka kwazvo yekumusoro kupedzisa yakananga kunze kwe mold, iyo inopa iri nani pekutangira. Nekuumbwa kwegoko, pane kazhinji kazhinji kucheneswa kwepamusoro kunodiwa. Saka sarudzo yekukanda maitiro pachayo inogona kupesvedzera mashandiro echikamu chekupedzisira muzvimiro zvinoodza, chimwe chinhu chisiri pachena kana uchingotarisa tafura yezvivakwa.
Post-weld kana post-heat-treatment, iyo corrosion resistance inotora imwe hit kana ukasanyatsoita pickle uye passivate. Isu hatingotumire zvikamu zvinopisa-kupisa pasina danho iri. Icho chinhu chekuwedzera mutengo wemutsara, asi kusvetuka zvinoreva kuti chikamu chinogona kuita ngura mukufambisa kana kuchengetedza, izvo zvinotaridzika zvisina hunyanzvi. Ndoaya madiki, asina-anoyevedza maitiro matanho anotsanangura mhando kana uchishanda nemagiredhi se420.
Kushanda neAlloy Variations uye Sourcing
420 hachisi chinhu chimwe chete. Kune 420, 420F (ine sarufa yakawedzerwa ye machinability), uye 420J2 akasiyana ane kabhoni akasiyana zvishoma. Iyo 420F kurota kumuchina kana ichienzaniswa neyakajairwa 420, asi iyo weldability haina kunaka uye iyo sulfide inclusions inogona kuve mapoinzi ekushaya simba kwekuneta kana kuora. Iwe unofanirwa kuenzanisa mutsauko kune basa. Kune yakaoma, yakatetepa-yakavakirwa casting iyo inoda yakakura CNC machining, tinogona kusundira 420F nemvumo yemutengi, tichitaura nezvekutengeserana-offs. Kune chimwe chikamu chinoda kusimba kwakanaka, tinosiya giredhi re'F'.
Sourcing inopindirana mbishi zvinhu ndeimwe yakavanzika art. Kupfuura makore makumi matatu mubhizinesi iri, takavaka hukama nevagayo nevashambadzi vatinovimba. Musiyano pakati pekunyungudika kwakachena uye yakasviba imwe ye420 yakakura yekukanda uye kuperera kwekupedzisira. Kusachena kunogona kutungamira mukupisa kubvarura panguva yekusimba kana isiri-simbi inclusions inova yekukundikana mapoinzi. Kana tichitenga zvinhu zvekukandira, hatisi kungotenga '420 stainless steel'; tiri kutsanangura maitiro ekunyunguduka uye tichikumbira zvigayo zvitupa zvatinonyatsoongorora. Idanho rekushingaira rinoparadzanisa chikamu chinoshanda kubva pane chinokundikana mumunda.
Uku kutarisisa kuperera kwezvinhu kunokosha pakuitisa sei QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. inoshanda. Kunyangwe iri 420, zvimwe simbi isina tsvina magiredhi, kana nickel-based alloys yatinobatawo, huzivi hwakafanana: nzwisisa mweya wechinhu, kwete nhamba dzayo chete. Iwe unogona kuwana zvimwe nezve maitiro edu kune zvigadzirwa pane yedu saiti, tsngtaocnc.com. Ndiro hwaro hunotitendera kuti tiite mabasa anonyengerera tiine chivimbo.
Nguva Yekusarudza 420 (Uye Nguva Yekufamba)
Saka, mushure mezvose izvi zvinogona kurwadza musoro, sei uchishandise 420 zvachose? Nekuti kana yakwana, inodhura-inoshanda mhinduro. Yakanakisa kune zvikamu zvinoda musanganiswa wepakati corrosion kuramba uye kuomarara kwakanyanya/kusimba uko iyo premium yemagiredhi se440C kana 17-4 PH haina kurongeka. Funga nezvepombi shafts, mavharuvhu, midziyo yekuvhiya (apo inogona kukwenenzverwa kusvika padanho repamusoro), uye hongu, mamwe mapanga uye mapanga asingaone hutsinye hwemakemikari nharaunda. Iyo magineti pfuma inodiwawo mune mamwe maapplication.
Sarudzo matrix kwatiri kazhinji inoenda seizvi: Chikamu chinoda kuoma here? (Ehe). Ichaona ngura chete kana kuve munzvimbo yakachengetedzwa? (Ehe). Iyo geometry inokodzera kudzora kupisa kurapwa kudzivirira kukanganisa? (Yakakosha). Iyo bhajeti inotarisisa here? (Kazhinji). Kana mabhokisi mazhinji akatariswa, 420 mukwikwidzi ane simba. Isu tinobva taita hurukuro yehunyanzvi nezve dhizaini yekukanda (mayunifomu zvikamu, rupo radii), machining zano, uye kupisa kwekupisa kufungidzira tisati tataura. Izvi zvinodzivirira kushamisika.
Ndakaenda kure nemabasa anotsanangura mazana mana nemakumi maviri ezvikamu zvepasi pemvura kana zvikamu zvemakemikari dosing pombi. Hachisi chinhu chokudada; ndezvekuziva miganhu yezvinhu. Kusundidzira chinhu muchishandiso icho chisina kukodzera kunotungamira kune callbacks, kukuvadza mukurumbira, uye vatengi vasingafarire. Dzimwe nguva, iyo yakanyanya hunyanzvi sevhisi yaunogona kupa ndeyekutaura, Ichi hachisi chinhu chakakodzera, uye ichi ndicho chikonzero.
The Heat Treatment Dance
Iwe haugone kutaura nezve 420 usina kunyura mukati mekupisa kurapwa. Ndiyo nhanho yekugadzira-kana-kupwanya. Austenitizing tembiricha, kudzima svikiro (mafuta ari mureza), uye tempering cycle haasi mabikirwo aunodhonza kubva mubhuku. Ndivo mapoinzi ekutanga. Iwo chaiwo maparamendi anochinja zvichienderana nehuremu hwechikamu, ukobvu hwechikamu, uye kunyangwe nhoroondo yepamberi yekugadzira. Semuyenzaniso, chikamu chine zvinorema machining stress chinoda zororo rekushushikana kusati kwaoma uye kushatirwa, kana kuti inogona kutenderera zvakanyanya.
Isu tinoita kupisa kwedu kurapwa mukati-mumba kumabasa akakosha nekuti isu tinoda iyo control. Kune batch ye-high-precision scraper blades, takaona kuti hasha mbiri-chimwe chinhu chisingagarodanwa-chakavandudza kugadzikana kwedimensional. Hasha dzekutanga mushure mekudzima zvinodzikisira kushushikana kukuru, asi kechipiri, hasha dzakakwirira zvishoma dzinoita sedzinobvisa kuoma uye kudzoreredza kushushikana kwasara kubva mukudzima chaiko. Mhedzisiro yacho yaive shoma kufamba panguva yekupedzisira micro-kugaya. Ndiwo manuances aya aunotora pamusoro pemazana emabhechi.
Monitoring ndiyo yakakosha. Isu tinoteedzera tembiricha yevira nema sensors akazvimirira, kwete kungoverenga kuverenga. Kudzima tembiricha yemafuta uye kusagadzikana kunodzorwa. Zvinonzwika zvakakosha, asi ndakaona zvitoro uko tangi yekudzima iri mukona uye tembiricha yemafuta inoshanduka nemwaka. Haufe wakawana mhinduro dzinoenderana ne420 nenzira iyoyo. Musiyano uripo pakati pechikamu chakakwana, chakapfava uye chakamonyoroka, chakatsemuka kazhinji chingori madhigirii makumi mashanu pakudzima kana maminetsi gumi akareba kwazvo muchoto chinopisa.
Pakupedzisira, 420 simbi isina tsvina chishandiso. Imwe chaiyo chaiyo. Zvinoda nzwisiso yemurapi—kuremekedza zvazvinoita, kuziva ganhuriro dzayo, uye muitiro wokungwarira wokuzarura kugona kwayo. Haisi zvinhu zvevasina basa kana zvekumhanyirwa. Asi kana iwe uchinge wazviwana zvakanaka, kana kukanda kwanzwika, machining akachena, uye nzvimbo yekupisa yekupisa-pairi, inopa yakasimba, inoshanda chikamu chinoita chaizvo sezvinodiwa. Ndiko kugutsikana kunoita kuti urambe uri mumutambo uyu, uchifunga kutamba pakati pesimbi, maitiro, uye kushandisa, batch rimwe panguva.
