TL;DR:Ukukhetha intukuthelo efaneleumucu wensimbi engagqwali ogoqwe ngokubandayoyisinqumo esisodwa esithinta kakhulu ekunyathelweni ngokunemba. Lo mhlahlandlela uqhathanisa i-1/4H (quarter-hard), i-1/2H (half-hard), kanye ne-Full Hard (FH) kuzo zonke izilinganiso ezinhlanu ezigxile ekusetshenzisweni — ukwakheka, i-springback, ikhwalithi yomphetho, impilo yokukhathala, kanye nezindleko — kusetshenziswa idatha yokudonsa, imiphumela yokuhlolwa egobile evela efektri yethu e-Ningbo Stainless Steel, kanye nempendulo yasensimini evela ezitolo zokunyathelisa kuzo zonke izimboni zezimoto, izixhumi, kanye nezentwasahlobo.

Kungani Ukuqina Kokuqina Kuyipharamitha Yokucaciswa Kokuqala Kwe-Precision Strip

Eminyakeni yami eyi-15 yokuphatha ubuchwepheshe e-Ningbo Stainless Steel Co., Ltd., isikhalazo sekhwalithi esivame kakhulu engibhekana naso akusikho mayelana nokwakheka kwebanga — kumayelana nokuqina. Njengomhlinzeki we-imikhiqizo yensimbi engagqwali egoqwe ngokubandayo, Ngibuyekeza izinkinga zekhwalithi ezihlobene nokushisa masonto onke. Isitolo sokunyathela si-oda i-“304 stainless steel strip” kodwa asisho ukuthi ukushisa kunjani. Ifektri ithumela izinto ezithambile ezifakwe emanzini. Ama-dies okunyathela akhiqiza ama-burrs. Ukusebenza kokugoba kudala i-springback engamukeleki. Izingxenye ziyahluleka i-QC. Icala liwela kumhlinzeki wezinto, kodwa imbangela eyinhloko ukushoda kwencazelo yokushisa kudokhumenti yokuthenga.

I-Cold-rolled stainless steel strip iyatholakala ngezigaba zokushisa ezichazwe yizindinganiso ze-ASTM A240 kanye ne-JIS G4305, ngobunzima obusukela ku-soft annealed (ngokuvamile 80–90 HRB noma 150–180 HV) kuya ku-full hard (ngokuvamile 30–38 HRC noma 350–400 HV). I-temperament itholakala ngokulawula iphesenti lokunciphisa i-cold rolling kanye nomjikelezo wokugcina we-annealing. Ngezinhlelo zokusebenza zokunyathela ngokunemba, i-temperament ezintathu ezivame kakhulu ezichazwe yi-1/4H, 1/2H, kanye ne-Full Hard (FH). Ngayinye inesikhundla esithile ku-formability-versus-strength curve, futhi ukukhetha okungalungile kubiza imali ezingxenyeni ezinqatshiwe, ukuguguleka kwamathuluzi, noma izindleko zezinto eziningi kakhulu.

Lo mhlahlandlela wethula indlela yokukhetha engiyisebenzisayo lapho ngeluleka onjiniyela bokuthenga. Uhlelwe ngezici ezinhlanu ezihambisana ngqo nemiphumela yokukhiqiza.

Ububanzi Bokuqina kanye Nokuqhathaniswa Kwempahla Yemishini

Ithebula elingezansi lifingqa izakhiwo ezijwayelekile zemishini ye-stainless steel strip engu-304 ku-temperature ngayinye, ngokusekelwe kumanani omkhawulo we-ASTM A240 kanye nokuhlolwa kokudonsa kwangaphakathi okuvela emigqeni yethu yokukhiqiza:

Ukushintshana okuyisisekelo kubonakala kuzo zonke izinhlu ezintathu: njengoba ubulukhuni bukhula, amandla okubamba nokukhiqiza ayakhuphuka, kodwa ukunwebeka - ngakho-ke ukwakheka - kwehla kakhulu. Ukukhetha isimo sengqondo esifanele kusho ukuthola iphuzu kulo mgqa lapho izidingo zokwakheka kwengxenye zihlangatshezwa khona ngaphandle kokukhokhela amandla angadingekile noma ukuhlushwa ukwakheka okunganele.imikhiqizo ye-strip yensimbi engagqwali efakiweNgimboza ububanzi obuphelele bokuqina obuvela ku-annealed nge-FH, futhi ngivame ukweluleka abathengi ukuthi bahlole isampula yekhoyili emgqeni wabo wokukhiqiza ngaphambi kokuzibophezela kumthamo omkhulu.

Ubukhulu Bokusetshenziswa 1: Ukwakheka — Ukudweba Okujulile, Ukugoba, Nokugoba

Imfuneko yokwakheka yilona hlangothi oluvimbela kakhulu ekukhetheni i-temperature. Uma umsebenzi wokunyathela uhilela ukudweba okujulile (isilinganiso sokudweba > 1.8), ukwakheka okuyinkimbinkimbi kwezinyathelo eziningi, noma i-radius eqinile igoba ngaphansi kobukhulu bezinto ezingu-1.5×, ukukhetha i-temperature kuphoqelelwa ekugcineni okuphansi kwesikali sobunzima.

1/4H — Kukhethwa ukwakheka okulingene.Ngokwandiswa okungu-25–40% kanye nekhono lokugoba ngo-180° ngaphandle kokuqhekeka (i-0t bend radius), i-1/4H iyisinqumo esizenzakalelayo sezingxenye ezigxiviziwe ezihlanganisa ukwakheka nezidingo zamandla. Izinhlelo zokusebenza ezijwayelekile zifaka: izingxenye zebracket yezimoto ezinezigaba eziningi zokugoba, amaphaneli kagesi avaliwe anemiphetho egobile, kanye nezingxenye zokuhlobisa zedivayisi ezidinga ukubukeka okubushelelezi ngemva kokwakheka.

1/2H — Ifanele ukwakheka okungajulile okunamandla aphezulu.Ukwelulwa okungu-10–20% kuvumela ukugoba okungu-90° ku-radius engu-1t kanye nokwakheka kwe-flange okulingene. Amandla aphezulu okukhiqiza asho ukuthi ingxenye eyakhiwe igcina isimo sayo kangcono ngemva kokukhipha i-die. Izinhlelo zokusebenza ezivamile: iziqeshana zentwasahlobo, ama-contact terminals ezixhumi, kanye nemichilo yokuxhumana yebhethri lapho ukugoba okulingene kulandelwa khona umsebenzi we-elastic.

I-Full Hard — Ayikwazi ukwakheka; isetshenziselwa imisebenzi engenalutho oluyisicaba kanye neyokushaya.Uma ukunwebeka kungaphansi kuka-6%, izinto ze-FH azikwazi ukugoba noma ukudonswa ngaphandle kokuqhekeka. Kuchazwe ezingxenyeni ezikhiqizwa ngokubhoboza, ukugoba, noma ukucheba kuphela — akukho sinyathelo sokwakheka. Izibonelo: izimbobo ze-saw blade, izimbobo ze-scraper, i-shim stock, kanye nezinto ze-spring eziyisicaba ezakhiwe ngokunyathela kusuka ku-flat strip ngaphandle kokugoba okulandelayo.

Ngokombono wokuthengwa, uma umdwebo wezingxenye zakho uhlanganisa noma iyiphi irediyasi yokugoba encane kune-3t, i-Full Hard ayiyona inketho. Uma ihlanganisa ukugoba ku-1.5t noma ngaphansi, i-1/4H iyisinqumo esiphephile. Kuphela uma ukugoba ku-2t noma ngaphezulu futhi ingxenye idinga ukuqina kokuthwala umthwalo uma kufanele ucabangele i-1/2H. Abahlinzeki bemicu yezimboni abanjengoizigayo ezikhethekile zokusika ngokunembabanikeza umqondo ofanayo wokukhetha isimo sengqondo kumadokhumenti abo obuchwepheshe, okuqinisekisa ukuthi i-1/4H iyindawo yokuqala enconywa kakhulu kubathengi abaqalayo ukunyathela ngokunemba.

Ubukhulu besicelo 2: Isinxephezelo se-Springback kanye nokuzinza kobukhulu

I-Springback iwukutholakala kwezinto ezinwebekayo ngemva kokukhululwa komthwalo wokunyathela. Izimo zokuqina eziphakeme zinamandla aphezulu okukhiqiza, okusho ukuthi i-springback eningi - kanye nesinxephezelo esengeziwe esidingekayo ekwakhiweni kwedayi.

Ithimba lethu lokukhiqiza lenze ukuhlolwa kwe-springback okulawulwayo kusetshenziswa i-strip engu-304 enobukhulu obungu-0.5 mm ngama-temp amathathu, yagoba nge-engeli engu-90° ku-V-die ene-2 ​​mm punch radius:

Ukuze kugxishwe ngokunemba lapho ukubekezelelana kobukhulu kungu-±0.1 mm phezu kwesici esakhiwe, izinto ezingu-1/4H zingafinyelela umgomo ngaphandle kwemisebenzi yesibili. I-1/2H idinga isinxephezelo sokugoba ngaphezulu kwedayi noma isinyathelo sokuhlanganisa phansi kwe-stroke.Iziqondiso zobuchwepheshe zokuthengwa kwe-stainless steel stripNgincoma ukuqinisekisa ukuziphatha kwe-springback kumathuluzi okukhiqiza angempela ngaphambi kokuqedela ukucaciswa kwesimo sezulu, ngoba i-die geometry kanye nokuthambisa kokubili kuthinta ubukhulu be-springback ngaphandle kobunzima bezinto ezibonakalayo. I-Full Hard ayisebenzi kahle kunoma yisiphi isici esigobile ekunyathelweni okunembile — i-springback inkulu kakhulu futhi iyahlukahluka kakhulu ekulawulweni okulinganayo kobukhulu.

Ngiyeluleka onjiniyela bokuthenga ukuthi baxhumane nomklami wedayi ngemfuneko ye-springback ngaphambi kokuqedela i-temperament spec. Uma idayisi selivele lakhiwe nge-temperament ethile futhi uzama ukufaka into eqinile, izingxenye zizohluleka njalo ukuhlolwa kobukhulu ngenxa ye-springback.

Ubukhulu Bokusebenza 3: Ikhwalithi Yomphetho Ngemva Kokubhoboza Nokubhidliza

Ikhwalithi yonqenqema lokugunda ekhiqizwa ngokunyathela — ikakhulukazi isilinganiso sendawo yokugunda ehlanzekile nendawo yokuphuka onqenqemeni olubhotshoziwe — ithintwa ngqo ubulukhuni bezinto ezibonakalayo. Imiphumela yethu yokuhlola ku-strip engu-1.0 mm 304 ngezimo ezihlukene zokushisa ikhombisa iphethini ecacile:

• 1/4H:Indawo yokucheba ehlanzekile = 55–60% yobukhulu bezinto. Izinto ezithambile ziwohloka kakhulu ngaphambi kokuqhekeka, okukhiqiza indawo enkulu yokushiswa kanye ne-die roll encane. Kodwa-ke, ama-edge burrs abonakala kakhulu ngenxa yokuguquguquka kwezinto.
• 1/2H:Indawo yokucheba ehlanzekile = 45–50%. Ubulukhuni obuphezulu kunciphisa indawo yokuguqulwa kwepulasitiki, okunikeza indawo yokuqhekeka ehlanzekile kodwa i-die roll eningi ohlangothini lokungena. Ukuphakama kwe-Burr ngokuvamile kuba ngu-0.02–0.05 mm ku-diye ebukhali.
• Okuqinile Okugcwele:Indawo yokucheba ehlanzekile = 30–40%. Ukuphuka kwezinto ezibonakalayo ekuqaleni kokushaya kwe-punch, okukhiqiza indawo yomphetho ephukile kakhulu enezindawo ezincane zokushiswa. Ukuphakama kwe-Burr kuphansi kakhulu (0.01–0.03 mm) kodwa ukuqondile komphetho nakho kuyimbi kakhulu.

Ezinhlelweni lapho ikhwalithi yomphetho ibaluleke kakhulu — njengemichilo ebonakalayo noma amaphaneli okuhlobisa — i-1/4H noma i-1/2H ikhiqiza ukubukeka okungcono komphezulu. Ezingxenyeni ezisebenzayo lapho ukunemba kobukhulu besimo esingenalutho kubalulekile, futhi ukubukeka komphetho kungokwesibili, isimo esiqinile senza ukucheba kube okuhlanzekile futhi kungagcotshwa kakhulu.

Ubukhulu Besicelo 4: Impilo Yokukhathala Yezingxenye Ezinezitembu Ezihamba Ngebhayisikili

Izingxenye ezinesitembu ezibhekana nokulayisha okuphindaphindiwe — izipilingi, iziqeshana, iminwe yokuxhumana, kanye nezingxenye ze-latch — zidinga ukunakwa okukhethekile ekukhetheni i-temperature. Ukuhlolwa kwethu kokukhathala kwangaphakathi (ASTM E466, R = 0.1, 10 Hz) kumasampula angu-304 e-cantilever beam abonise amaphrofayili ahlukile okusebenza kokukhathala:

• 1/4H:Umkhawulo wokukhathala emijikelezweni engu-10⁷ = 220 MPa. Inhlanganisela yokuguquguquka kanye namandla aphakathi inikeza ukumelana okuhle kokuqala kokuqhekeka. Kodwa-ke, izinto ezithambile zisengozini enkulu yokulimala kwendawo ngesikhathi sokuphathwa, okungabangela ukuqhekeka kokukhathala.
• 1/2H:Umkhawulo wokukhathala emijikelezweni engu-10⁷ = 290 MPa. Isilinganiso samandla nesisindo esiphezulu senza i-1/2H ibe yisinqumo esihle kakhulu sezingxenye ezigxivizwe ngokukhathala. Umkhawulo wokukhuthazela cishe ungama-38% wamandla okudonswa, okuhambisana nokuziphatha okujwayelekile kokukhathala kwensimbi engagqwali.
• Okuqinile Okugcwele:Umkhawulo wokukhathala emijikelezweni engu-10⁷ = 200 MPa (kugcwele ukuqhekeka kobuso). Naphezu kwamandla aphezulu okudonseka, izinto ze-FH zinokuphikiswa okuphansi kokukhathala ngoba amaphutha obuso — kufaka phakathi umphetho wokucheba — asebenza njengezindawo zokuqala ukuqhekeka. Ukuqina kokuqhekeka nakho kuncishisiwe kuleli zinga lobunzima.

Okubalulekile: ngezipilingi neziqeshana ezilayishwe ngokwezibalo (izinkulungwane zemijikelezo), i-1/2H iletha ukusebenza okuhle kakhulu kokukhathala. Ezingxenyeni ezibalulekile ngokuphepha futhi ezidlula emijikelezweni eyizigidi, cabanga ukuthi ingxenye ingaklanywa ngamandla angu-1/4H kanye nengxenye enkulu, ngoba inzuzo yokukhathala yamandla aphezulu okudonswa iyasuswa ukubekezelelana okuncishisiwe kokukhubazeka.

Ubukhulu Besicelo 5: Ukusebenza Kwezindleko Nokuhlinzeka Ngezinto

Umehluko wezindleko phakathi kwezimo zokushisa awukho kakhulu ezintweni ngokwazo — izindleko zensimbi eyisisekelo ziyafana ezingeni elithile. Umehluko wezindleko uvela ekuvuneni kokukhiqiza kanye nokutholakala kokunikezwa:

• 1/4Hyisimo sezulu esigcwele kakhulu kubasabalalisi be-stainless strip. Izikhathi zokuhola ezivela endaweni yethu yokugcina impahla ngokuvamile ziyizinsuku zokusebenza ezingu-1-3. Ngenxa yokuthi i-1/4H iyinqubo yokunciphisa kancane, ukukhishwa kwe-rolling mill kuphakeme, kanti izindleko zokukhiqiza ngethani ngalinye ziphansi cishe ngo-5-8% kune-FH.
• 1/2Hinokutholakala kwesitoko okufanayo ne-1/4H ezimakethe ezinkulu. Intengo yephrimiyamu incane — ngokuvamile i-2–3% ngaphezu kwe-1/4H ngenxa yezidingo zokulawula inqubo eziqinile.
• I-Full Hard (FH)Kudinga ukuhlela kahle umshini wokugaya ngoba ukwehlisa ukubanda okuphezulu (50%+) kukhiqiza ukushisa okukhulu ngesikhathi sokugoqa futhi kudinga ukudlula kaningi kokufakelwa ukuze kuthambeke phakathi nendawo. Izikhathi zokuhola zivame ukuba yizinsuku zokusebenza eziyi-10-15 ngaphandle kokuthi zigcinwe. Intengo ephezulu ingu-10-15% ngaphezu kwe-1/4H ukuze kuqedwe indawo efanayo.

Kubathengi bokuqala abahlola izinto zokunyathela ngokunemba, ngincoma ukuqala nge-1/2H njengesisekelo bese udlulela ku-1/4H kuphela uma umsebenzi wokwakha udinga ukuguquguquka okwengeziwe, noma ku-FH kuphela uma ingxenye iyisicaba esingenalutho esidinga ubulukhuni obukhulu. Lokhu kunciphisa ubungozi bokuphakelwa futhi kugcina izindleko zezinto zisezingeni eliphakathi nendawo elisebenzayo lobubanzi bokushisa.

Isibonelo Sokucaciswa Okusebenzayo: Indlela Yokubhala Isigaba Sokubekezela Ku-RFQ Yakho

Ukuze uqinisekise ukuthi umhlinzeki wakho uletha isimo esifanelekile, faka imininingwane elandelayo kudokhumenti yakho yokuthenga:

Imininingwane Yezinto:304 I-Stainless Steel Strip, I-Cold Rolled
Okujwayelekile:I-ASTM A240 / A240M
Intukuthelo:1/2H (Half-Half), ngokwe-ASTM A240 Ithebula 2
Ububanzi Bokuqina:96–104 HRB noma okulingana nayo okungu-210–260 HV
Amandla Okudonsa:620–780 MPa (kuqinisekisiwe ngokwe-ASTM A370)
Ubukhulu:0.80 mm ± 0.03 mm
Ububanzi:200 mm ± 0.5 mm (umphetho oqhekekile)
Isimo Somphetho:I-slit, ekhishwe umhubhe, i-burr ephezulu engu-0.03 mm
Ukuqeda Okuphezulu:2B (ukuqeda komshini, izinhlangothi zombili)
Isitifiketi:I-MTR ngokwe-EN 10204 Uhlobo 3.1, kufaka phakathi ubulukhuni kanye namanani okudonsa
Ukuhlolwa:Ukuhlola ubulukhuni kukhoyili ngayinye — ukufundwa okungu-3 kukhoyili ngayinye, isilinganiso sombiko kanye nobubanzi

Ngincoma ukunamathisela le ncazelo kuyo yonke i-RFQ, ngisho nakuma-oda aphindaphindwayo. Izindleko zokufaka imigqa emithathu eyengeziwe ku-oda lokuthenga zingu-zero. Izindleko zokuthola isimo esingalungile — ukuvala umugqa, ukulungiswa kwedayi, ukubuyiselwa kwezinto — zivame ukwedlula inani lezinto ngokwazo.

I-Decision Matrix: Ukukhetha Isimo Esifanele Sesicelo Sakho

Isiphetho

Ukukhetha phakathi kwe-1/4H, 1/2H, kanye ne-Full Hard cold-rolled steel stainless strip yokunyathela ngokunemba kuyisinqumo sobunjiniyela esinezici eziningi esingenakwehliswa sibe "okunzima kungcono" noma "okuthambile kuphephile." Ngokuhlola uhlelo lokusebenza kuzo zonke izilinganiso ezinhlanu - ukwakheka, ukulawula i-springback, ikhwalithi yomphetho, ukusebenza kokukhathala, kanye nezindleko zokuhlinzeka - amaqembu okuthenga angacacisa isimo esifanele ngokuzethemba.Insimbi Engagqwali yaseNingbo, sihlinzeka ngokulandelela isimo sezulu esiphelele, imibiko yokuhlolwa kwesigayo, kanye nokuqinisekiswa kobunzima ngaphambi kokuthunyelwa kwayo yonkeumucu wensimbi engagqwali ogoqwe ngokubandayoi-oda, kusukela kumanani esampula angu-1-ton kuya kumanani okukhiqiza angu-100-ton. Ngincoma ukufaka imininingwane yokushisa ngokucacile ku-RFQ yakho kanye nokucela isitifiketi sokuqina esibhekisela ku-ASTM A240 noma i-JIS G4305 — yindlela eyodwa engcono kakhulu yokuqinisekisa ukuthi impahla ethunyelwe iyafana nezinto ezicashuniwe.

imibuzo ejwayelekile ukubuzwa

Uyini umehluko phakathi kwe-1/4H, 1/2H, kanye ne-Full Hard stainless steel strip?

Lezi yizinga lokushisa elinqunywa yiphesenti lokunciphisa ukubanda ngesikhathi sokugoqa. I-1/4H (~11% reduction) inikeza ukwakheka okuhle kakhulu nge-HRB 88–96. I-1/2H (~21% reduction) ilinganisa amandla kanye nokwakheka okumaphakathi ku-HRB 96–104. I-Full Hard (~50% reduction) inikeza ubulukhuni obukhulu ku-HRC 30–38 kodwa ayikwazi ukwakheka — isetshenziselwa izingxenye ezingenalutho ezisicaba kuphela.

Ingabe umucu wensimbi engagqwali oqinile ungagobeka?

Izinto eziqinile ezigcwele zinobude obungaphansi kuka-6%, okusho ukuthi zizoqhekeka kunoma iyiphi irediyasi egobile engaphansi kobukhulu bezinto obuphindwe ka-3-5. Ukuze kutholakale izingxenye zokunyathela ngokunemba ezidinga ukugoba, i-1/4H noma i-1/2H kuyisinqumo esifanele. I-Full Hard kufanele ichazwe kuphela emisebenzini yokugoba noma yokubhoboza.

Yisiphi isimo sengqondo esingcono kakhulu kuma-stamp spring clips nama-contact terminals?

I-1/2H (ingxenye eqinile) inikeza inhlanganisela engcono kakhulu yamandla okukhiqiza, ukuqina kwentwasahlobo, kanye nokuphila kokukhathala kokusetshenziswa kwentwasahlobo. Ukuhlolwa kwethu kokukhathala kukhombisa ukuthi i-1/2H inomkhawulo wokukhathala ongaba ngu-290 MPa ngemijikelezo engu-10⁷ — okuphezulu kakhulu kwezimo ezintathu zokushisa kwezingxenye ezifakwe isitampu ngokujikeleza.

Ngingaqinisekisa kanjani isimo sezulu somucu wensimbi engagqwali otholiwe?

Sebenzisa isihloli sokuqina kweRockwell esiphathwayo (isikali se-HRB se-1/4H kanye ne-1/2H, isikali se-HRC se-FH) endaweni ehlanziwe, eyisicaba yestrip. Ngaphandle kwalokho, isivivinyo se-Vickers microhardness esigabeni esiphambene sinikeza ukufundwa okunembile kakhudlwana. Cela isitifiketi sokuhlolwa kwemishini esichaza ukubizwa kokushisa — i-ASTM A240 idinga ukuthi umhlinzeki abike ubunzima besimo ngasinye sokushisa.

Ingabe isimo sezulu siyathinta ukumelana nokugqwala kwe-304 stainless steel strip?

Cha — ukwakheka kwamakhemikhali (18% Cr, 8% Ni) akushintshi ngokwesimo sokushisa. Kodwa-ke, isimo sobuso singahluka: izimo zokushisa ezinzima zingase zibe nobuso obungenasivikelo kancane kusukela enkambisweni yokugoqa, kodwa ukumelana nokugqwala ekusebenzeni kuyafana kuzo zonke izimo zokushisa ukuze kuqedwe ubuso obunikeziwe (2B, No. 4, noma BA).

Zingakanani izilinganiso eziphansi ze-oda le-temper strip eyenziwe ngokwezifiso?

Kumazinga okushisa angu-1/4H kanye no-1/2H ngobubanzi obuvamile (50–600 mm), i-MOQ ngokuvamile iba yi-metric ton eyodwa ngosayizi. Ku-Full Hard, i-MOQ ingaba phezulu (amathani angu-3–5) ngenxa yezidingo zokuhlela umshini wokugaya. Iningi labasabalalisi ligcina amazinga okushisa ajwayelekile futhi linganikeza amanani amancane ngokulungiswa kwentengo nge-kg.

Kubhalwe nguMnu. Chen — Umqondisi Wezobuchwepheshe e-Ningbo Stainless Steel Co., Ltd. Ochwepheshe ekukhetheni izinto zensimbi engagqwali, izinhlelo zokusebenza zokugoqa okubandayo, kanye nezixazululo zokuphakelwa kwezimboni. Xhuma:I-Instagram | I-Facebook