TL;DR:Kusankha mkwiyo woyenerachingwe chachitsulo chosapanga dzimbiri chozungulira choziziraNdi chisankho chokhacho chomwe chimakhudza kwambiri pakusindikiza molondola. Bukuli limayerekezera 1/4H (kotala-hard), 1/2H (theka-hard), ndi Full Hard (FH) m'magawo asanu ogwiritsira ntchito — kupangika, kupendekera, mtundu wa m'mphepete, moyo wotopa, ndi mtengo — pogwiritsa ntchito deta yolimba, zotsatira za mayeso opindika kuchokera ku fakitale yathu ku Ningbo Stainless Steel, ndi mayankho ochokera ku field markets m'magalimoto, ma connector, ndi ma spring industries.

Chifukwa Chake Kuuma kwa Mtima Ndiko Gawo Loyamba la Kufotokozera kwa Precision Strip

Mu zaka 15 zomwe ndakhala ndikuyang'anira ukadaulo ku Ningbo Stainless Steel Co., Ltd., madandaulo ambiri omwe ndimakumana nawo si okhudza kapangidwe kake — koma ndi okhudza kuuma kwake. Monga wogulitsa wazinthu zosapanga dzimbiri zozizira, Ndimaunikanso nkhani zokhudzana ndi khalidwe la kutentha kwa thupi sabata iliyonse. Sitolo yosindikizira imayitanitsa "304 stainless steel strip" koma siitchula kutentha kwa thupi. Fakitale imatumiza zinthu zofewa. Ma die osindikizira amapanga ma burrs. Kupindika kumapanga springback yosavomerezeka. Zigawozo zimalephera QC. Mlandu umagwera kwa wogulitsa zinthuzo, koma chifukwa chachikulu ndi kusowa kwa specification ya kutentha kwa thupi mu chikalata chogulira.

Chingwe chachitsulo chosapanga dzimbiri chozizira chimapezeka mu magiredi a kutentha omwe amafotokozedwa ndi miyezo ya ASTM A240 ndi JIS G4305, ndipo kuuma kwake kumayambira pa soft annealed (nthawi zambiri 80–90 HRB kapena 150–180 HV) mpaka full hard (nthawi zambiri 30–38 HRC kapena 350–400 HV). Kutentha kumeneku kumachitika powongolera kuchuluka kwa kuzizira kozungulira komanso kuzungulira komaliza kwa annealing. Pakugwiritsa ntchito stamping molondola, ma tempulo atatu omwe amatchulidwa kwambiri ndi 1/4H, 1/2H, ndi Full Hard (FH). Chilichonse chimakhala ndi malo akeake pa curve yokhazikika-kusiyana-ndi-mphamvu, ndipo kusankha cholakwika kumawononga ndalama pazinthu zomwe zakanidwa, kuwonongeka kwa zida, kapena mtengo wokwera kwambiri wa zinthu.

Bukuli likufotokoza mfundo zosankhira zomwe ndimagwiritsa ntchito popereka upangiri kwa akatswiri opeza zinthu. Lili ndi magawo asanu omwe amafotokozera mwachindunji zotsatira za kupanga.

Kuyerekeza kwa Kuuma ndi Katundu wa Makina

Gome ili m'munsimu likufotokoza mwachidule za momwe makina amagwirira ntchito pa chitsulo chosapanga dzimbiri cha 304 pa kutentha kulikonse, kutengera malire a ASTM A240 ndi mayeso omangika mkati mwa makina athu opangira:

Kusinthana kwakukulu kumawonekera m'mizere itatu iyi: pamene kuuma kukuwonjezeka, mphamvu yokoka ndi yobereka imakwera, koma kutalika - motero kupangika - kumachepa kwambiri. Kusankha kutentha koyenera kumatanthauza kupeza mfundo pa curve iyi pomwe zofunikira pakupanga gawo zimakwaniritsidwa popanda kulipira mphamvu zosafunikira kapena kuvutika ndi kusakwanira kwa kapangidwe kathu.zinthu zopangidwa ndi chitsulo chosapanga dzimbiriKuphimba kuuma konse kuchokera ku annealed kudzera mu FH, ndipo nthawi zonse ndimalangiza ogula kuti ayesere chitsanzo cha coil pamzere wawo wopanga asanapereke kuchuluka kwa bulk.

Gawo Logwiritsira Ntchito 1: Kupangika — Kujambula Mozama, Kupindika, ndi Kuyika Ma Flanging

Chofunikira pakupanga mawonekedwe ndicho choletsa kwambiri pakusankha kutentha. Ngati ntchito yopondaponda ikuphatikizapo kujambula mozama (chiŵerengero chojambula > 1.8), kupanga zinthu mozama kwambiri, kapena ma radius olimba akupindika pansi pa makulidwe a 1.5 ×, kusankha kutentha kumakakamizidwa kumapeto kwa sikelo yolimba.

1/4H — Imakonda kupangidwa pang'ono.Ndi kutalika kwa 25–40% komanso kuthekera kopindika 180° popanda kusweka (0t bend radius), 1/4H ndiye chisankho chokhazikika cha zigawo zosindikizidwa zomwe zimaphatikiza kupanga ndi zofunikira zamphamvu. Ntchito zodziwika bwino zimaphatikizapo: zigawo zamabaketi zamagalimoto zokhala ndi magawo angapo opindika, mapanelo amagetsi okhala ndi m'mbali zopindika, ndi zigawo zokongoletsa zida zomwe zimafuna mawonekedwe osalala zikapangidwa.

1/2H — Yoyenera kupangidwa pang'ono komanso yolimba kwambiri.Kutalika kwa 10–20% kumalola kuti 90° ipinde pa radius ya 1t ndi kupanga flange pang'ono. Mphamvu yochulukirapo imatanthauza kuti gawo lopangidwalo limasunga mawonekedwe ake bwino likatulutsidwa kuchokera ku die. Ntchito zofala kwambiri: ma spring clip, ma contact terminals a zolumikizira, ndi ma contact strips a batri komwe kupindika pang'ono kumatsatiridwa ndi elastic function.

Yolimba Kwambiri — Siyokonzeka kupangidwa; imagwiritsidwa ntchito pochita zinthu zopanda kanthu komanso zopunthira.Ndi kutalika kochepera 6%, zinthu za FH sizingapindidwe kapena kukokedwa popanda kusweka. Zimaperekedwa pazigawo zomwe zimapangidwa ndi kubowola, kusweka, kapena kumeta kokha — popanda kupanga sitepe. Zitsanzo: mabala a masamba odulidwa, masamba odulidwa, shim stock, ndi zinthu zathyathyathya za masika zopangidwa ndi kuponda kuchokera ku mzere wosalala popanda kupindika pambuyo pake.

Poganizira za kugula, ngati chojambula chanu chili ndi radius yokhota yochepera 3t, Full Hard si njira yabwino. Ngati ili ndi ma bend pa 1.5t kapena kuchepera, 1/4H ndiye chisankho chotetezeka. Pokhapokha ngati ma bend ali pa 2t kapena kupitirira ndipo gawolo likufunika kulimba konyamula katundu, muyenera kuganizira za 1/2H. Ogulitsa zinthu mongamphero zapadera zolondolaamapereka mfundo yofanana yosankha kutentha m'mafayilo awo aukadaulo, kutsimikizira kuti 1/4H ndiye poyambira polimbikitsidwa kwambiri kwa ogula omwe amalemba sitampu molondola nthawi yoyamba.

Gawo lachiwiri la Ntchito: Malipiro a Springback ndi Kukhazikika kwa Dimensional

Springback ndi njira yobwezeretsanso zinthuzo momasuka pambuyo poti katundu wopondapo watulutsidwa. Zinthu zolimba kwambiri zimakhala ndi mphamvu yochuluka yokolola, zomwe zikutanthauza kuti springback yambiri - ndipo pamafunika ndalama zambiri popanga die.

Gulu lathu lopanga zinthu linachita mayeso olamulidwa a springback pogwiritsa ntchito strip ya 304 yokhuthala ya 0.5 mm pa kutentha kwachitatu, yopindika pa ngodya ya 90° mu V-die yokhala ndi 2 mm punch radius:

Pa kusindikiza molondola komwe kulolerana kwa miyeso kuli ±0.1 mm pamwamba pa chinthu chopangidwa, 1/4H chipangizocho chingakwaniritse cholingacho popanda ntchito zina. 1/2H imafuna kubweza kopitilira muyeso mu die kapena sitepe yopangira pansi pa stroke.Malangizo aukadaulo ogulira zitsulo zosapanga dzimbiriNdikupangira kutsimikizira momwe springback imagwirira ntchito pa zida zenizeni zopangira musanamalize kufotokoza momwe kutentha kumakhalira, chifukwa die geometry ndi mafuta onse amakhudza kukula kwa springback popanda kuuma kwa zinthu. Full Hard singagwiritsidwe ntchito pa chinthu chilichonse chopindika poponda molondola - springback ndi yayikulu kwambiri ndipo imasinthasintha kwambiri kuti isayendetsedwe bwino.

Ndikulangiza mainjiniya ogula zinthu kuti afotokozere wopanga die zofunikira za springback kwa wopanga die asanamalize spec ya temper. Ngati die yapangidwa kale kuti igwirizane ndi temper inayake ndipo mukuyesera kusintha chinthu cholimba, ziwalozo nthawi zonse sizidzayang'aniridwa bwino chifukwa cha springback.

Gawo la Ntchito 3: Ubwino wa Mphepete Pambuyo Pobowola ndi Kutseka

Ubwino wa m'mphepete mwa shear womwe umapangidwa ndi stamping — makamaka chiŵerengero cha malo oyera odulidwa ndi malo osweka pamphepete wobowoledwa — chimakhudzidwa mwachindunji ndi kuuma kwa zinthu. Zotsatira zathu zoyesera pa 1.0 mm 304 strip pa kutentha kosiyana zikuwonetsa mawonekedwe omveka bwino:

• 1/4H:Malo oyera odulira chitsulo = 55–60% ya makulidwe a chinthucho. Chofewacho chimasinthasintha kwambiri chisanasweke, zomwe zimapangitsa kuti chikhale choyaka kwambiri komanso chikhale chochepa. Komabe, ma edge burrs amaonekera bwino chifukwa cha kulimba kwa chinthucho.
• 1/2H:Malo oyera odulira chitsulo = 45–50%. Kulimba kwambiri kumachepetsa malo odulira pulasitiki, zomwe zimapangitsa kuti malo osweka akhale oyera koma malo odulira chitsulo ambiri ali mbali yolowera. Kutalika kwa chitsulo nthawi zambiri kumakhala 0.02–0.05 mm pa chitsulo chakuthwa.
• Zolimba Kwambiri:Malo oyera odulira tsitsi = 30–40%. Zinthuzo zimasweka kale mu stroke ya punch, zomwe zimapangitsa kuti m'mphepete mwake mukhale ndi malo osweka pang'ono komanso malo oyaka pang'ono. Kutalika kwa Burr ndiko kotsika kwambiri (0.01–0.03 mm) koma kulunjika kwa m'mphepete nakonso ndiko kotsika kwambiri.

Pa ntchito zomwe khalidwe la m'mphepete ndi lofunika kwambiri pa kukongoletsa - monga mizere yowoneka bwino kapena mapanelo okongoletsera - 1/4H kapena 1/2H zimapangitsa kuti pamwamba pawoneke bwino. Pazigawo zomwe zimagwira ntchito bwino pomwe kulondola kwa mawonekedwe opanda kanthu ndikofunikira kwambiri, ndipo mawonekedwe a m'mphepete ndi achiwiri, kutentha kolimba kumapangitsa kuti kudula kukhale koyera komanso kusakhala ndi utoto wambiri.

Gawo Lachinayi Logwiritsira Ntchito: Moyo Wotopa wa Zigawo Zodzaza ndi Stampu Zozungulira

Zigawo zosindikizidwa zomwe zimadzazidwa mobwerezabwereza — ma spring, ma clip, zala zolumikizana, ndi zigawo zotchingira — zimafuna chisamaliro chapadera pa kusankha kutentha. Kuyesa kwathu kutopa mkati (ASTM E466, R = 0.1, 10 Hz) pa zitsanzo 304 za beam ya cantilever yosindikizidwa kunawonetsa magwiridwe antchito a kutopa:

• 1/4H:Kutopa pang'ono pa 10⁷ cycles = 220 MPa. Kuphatikiza kwa ductility ndi mphamvu pang'ono kumapereka kukana bwino kuyambitsa ming'alu. Komabe, zinthu zofewa zimakhala zosavuta kuwonongeka pamwamba pa ntchito, zomwe zimatha kuyambitsa ming'alu yotopa.
• 1/2H:Malire a kutopa pa 10⁷ cycles = 290 MPa. Chiŵerengero champhamvu pakati pa kulemera ndi kulemera chimapangitsa 1/2H kukhala chisankho chabwino kwambiri pazinthu zotopa zomwe zimasindikizidwa. Malire a kupirira ndi pafupifupi 38% ya mphamvu yokoka, mogwirizana ndi momwe chitsulo chosapanga dzimbiri chimachitira.
• Zolimba Kwambiri:Malire a kutopa pa 10⁷ cycles = 200 MPa (kuchuluka kwa ming'alu pamwamba). Ngakhale kuti ndi yolimba kwambiri, FH imagwira ntchito yochepetsera kutopa chifukwa zolakwika pamwamba - kuphatikizapo m'mphepete mwa stamping shear - zimagwira ntchito ngati malo oyambira ming'alu. Kulimba kwa ming'alu kumachepanso pamlingo uwu wolimba.

Mfundo yofunika: pa masipuling'i ndi ma clip omwe ali ndi ziwerengero (ma cycle zikwizikwi), 1/2H imapereka magwiridwe antchito abwino kwambiri otopa. Pazigawo zomwe ndizofunikira kwambiri pachitetezo komanso zomwe zimadutsa ma cycle mamiliyoni ambiri, ganizirani ngati gawolo lingapangidwe ndi mphamvu ya 1/4H komanso gawo lalikulu, chifukwa ubwino wa kutopa kwa mphamvu yolimba umachepetsedwa ndi kuchepa kwa kulekerera kwa zolakwika.

Gawo la Ntchito 5: Kugwira Ntchito kwa Mtengo ndi Kupereka Zinthu

Kusiyana kwa mtengo pakati pa kutentha sikuli makamaka mu chinthucho chokha — mtengo wa chitsulo choyambira ndi womwewo pa giredi yomwe yaperekedwa. Kusiyana kwa mtengo kumachokera ku zokolola zopanga ndi kupezeka kwa zinthu:

• 1/4HNdiwo malo omwe anthu ambiri amaikamo zinthu zosapanga dzimbiri. Nthawi yopezera zinthu kuchokera ku nyumba yathu yosungiramo katundu nthawi zambiri imakhala masiku 1-3 ogwira ntchito. Chifukwa chakuti 1/4H ndi njira yochepetsera pang'ono, mphamvu yogwiritsira ntchito makina opukutira ndi yokwera, ndipo mtengo wopangira pa tani ndi wocheperapo ndi 5-8% kuposa FH.
• 1/2Hali ndi masheya ofanana ndi 1/4H m'misika yayikulu. Mtengo wamtengo wapatali ndi wochepa — nthawi zambiri 2–3% kuposa 1/4H chifukwa cha zofunikira zowongolera njira.
• Full Hard (FH)kumafuna kukonzekera bwino kwa mphero chifukwa kuchepetsa kuzizira kwambiri (50%+) kumabweretsa kutentha kwakukulu panthawi yozungulira ndipo kumafuna njira zambiri zochepetsera kutentha kuti zifewetsedwe pang'onopang'ono. Nthawi zambiri zimakhala masiku 10-15 ogwira ntchito pokhapokha ngati zili ndi zinthu zambiri. Mtengo wamtengo wapatali ndi 10-15% kuposa 1/4H kuti pakhale kutha kofanana.

Kwa ogula koyamba omwe akuyang'ana zinthu zosindikizira molondola, ndikupangira kuyamba ndi 1/2H ngati maziko ndikusunthira ku 1/4H pokhapokha ngati ntchito yopangira ikufuna kusinthasintha kowonjezereka, kapena ku FH kokha ngati gawolo ndi gawo losalala lopanda kanthu lomwe limafuna kulimba kwakukulu. Izi zimachepetsa chiopsezo cha kupereka ndikusunga mtengo wazinthu pakati pa kutentha.

Chitsanzo Chothandiza Chofotokozera: Momwe Mungalembere Chiganizo cha Temper mu RFQ Yanu

Kuti muwonetsetse kuti wogulitsa wanu akupereka kutentha komwe mukufuna, onjezerani izi mu chikalata chanu chogulira:

Zinthu Zofunika:304 Chitsulo Chosapanga Dzimbiri, Chozungulira Chozizira
Muyezo:ASTM A240 / A240M
Mtima:1/2H (Half-Harvest), pa ASTM A240 Table 2
Kuuma kwa Magawo:96–104 HRB kapena mphamvu yofanana nayo 210–260 HV
Kulimba kwamakokedwe:620–780 MPa (yotsimikizika malinga ndi ASTM A370)
Kukhuthala:0.80 mm ± 0.03 mm
M'lifupi:200 mm ± 0.5 mm (m'mphepete mwa mdulidwe)
Mkhalidwe wa Mphepete:Mzere wodulidwa, wochotsedwa, mzere wokulirapo wa 0.03 mm
Kumaliza Pamwamba:2B (kumaliza kwa mphero, mbali zonse ziwiri)
Chitsimikizo:MTR pa EN 10204 Mtundu 3.1, kuphatikiza kuuma ndi kukhuthala
Kuyesa:Kuwunika kuuma kwa coil iliyonse — mawerengedwe atatu pa coil iliyonse, avareji ya lipoti ndi mtunda

Ndikupangira kuti muphatikize izi pa RFQ iliyonse, ngakhale pa maoda obwerezabwereza. Mtengo wowonjezera mizere itatu yowonjezera pa oda yogulira ndi zero. Mtengo wolandira kutentha kolakwika — kutsekedwa kwa mzere, kusintha kwa die, kubweza zinthu — nthawi zambiri umaposa mtengo wa zinthu zokha.

Matrix ya Zisankho: Kusankha Mtima Woyenera pa Ntchito Yanu

Mapeto

Kusankha pakati pa 1/4H, 1/2H, ndi Full Hard cold-rolled stainless steel strip kuti isindikizidwe molondola ndi chisankho cha uinjiniya chamitundu yambiri chomwe sichingachepetsedwe kukhala "cholimba kuposa chabwino" kapena "chofewa ndi chotetezeka." Poyesa kugwiritsa ntchito magawo asanu - kupangika, kuwongolera kwa springback, mtundu wa m'mphepete, magwiridwe antchito otopa, ndi mtengo woperekera - magulu ogula amatha kusankha kutentha koyenera ndi chidaliro.Chitsulo Chosapanga Dziwe cha Ningbo, timapereka kutsata kwathunthu kutentha, malipoti oyesera mphero, ndi chitsimikizo cha kuuma kwa kutumizidwa musanatumize pa chilichonse.chingwe chachitsulo chosapanga dzimbiri chozungulira choziziraoda, kuyambira pa zitsanzo za tani imodzi mpaka matani 100 opanga. Ndikupangira kuphatikiza zomwe zili mu RFQ yanu ndikupempha satifiketi yolimba yosonyeza ASTM A240 kapena JIS G4305 — ndiyo njira yabwino kwambiri yotsimikizira kuti zinthu zomwe zaperekedwa zikugwirizana ndi zomwe zatchulidwa.

Mafunso Ofunsidwa Kawirikawiri

Kodi pali kusiyana kotani pakati pa 1/4H, 1/2H, ndi Full Hard stainless steel strip?

Izi ndi ma grade a kutentha omwe amatsimikiziridwa ndi kuchuluka kwa kuchepetsa kuzizira panthawi yozungulira. 1/4H (~11% kuchepetsa) imapereka mawonekedwe abwino kwambiri ndi HRB 88–96. 1/2H (~21% kuchepetsa) imayesa mphamvu ndi mapangidwe apakati pa HRB 96–104. Full Hard (~50% kuchepetsa) imapereka kuuma kwakukulu pa HRC 30–38 koma singathe kupangidwa — imagwiritsidwa ntchito pazinthu zopanda kanthu zokha.

Kodi mzere wachitsulo chosapanga dzimbiri cholimba ungapindidwe?

Zipangizo Zolimba Zonse zili ndi kutalika kochepera 6%, zomwe zikutanthauza kuti zidzasweka pa radius iliyonse yopindika pansi pa makulidwe azinthu katatu mpaka kasanu. Pazinthu zoponda bwino zomwe zimafuna kupindika, 1/4H kapena 1/2H ndiye chisankho choyenera. Zolimba Zonse ziyenera kutchulidwa pokhapokha ngati pali ntchito zopukutira kapena zoboola.

Ndi kutentha kotani komwe kuli bwino kwambiri pa ma clamp spring clips ndi ma contact terminals?

1/2H (yolimba theka) imapereka mphamvu yabwino kwambiri yobereka, kukhazikika kwa springback, komanso nthawi yotopetsa yogwiritsira ntchito masika. Mayeso athu a kutopa akuwonetsa kuti 1/2H ili ndi malire a kutopa pafupifupi 290 MPa pa 10⁷ cycles — kutentha kwakukulu kwambiri pazigawo zitatu zodzaza ndi zinthu zosindikizidwa.

Kodi ndingatsimikizire bwanji kutentha kwa mzere wachitsulo chosapanga dzimbiri wolandiridwa?

Gwiritsani ntchito choyezera kuuma kwa Rockwell chonyamulika (muyeso wa HRB wa 1/4H ndi 1/2H, muyeso wa HRC wa FH) pamalo oyera komanso athyathyathya a mzerewo. Kapenanso, mayeso a Vickers microhardness pa gawo lopingasa amapereka ziwerengero zolondola kwambiri. Pemphani satifiketi yoyesera ya mphero yomwe ikufotokoza momwe kutentha kumakhalira — ASTM A240 imafuna kuti wogulitsa anene za kuuma kwa kutentha kulikonse.

Kodi kutentha kumakhudza kukana dzimbiri kwa mzere wa chitsulo chosapanga dzimbiri wa 304?

Ayi — kapangidwe ka mankhwala (18% Cr, 8% Ni) sikasintha ndi kutentha. Komabe, mkhalidwe wa pamwamba ukhoza kusiyana: kutentha kolimba kungakhale ndi malo osasunthika pang'ono kuchokera pakugubuduzika, koma kukana dzimbiri komwe kumagwiritsidwa ntchito kuli kofanana pa kutentha kwa pamwamba (2B, No. 4, kapena BA).

Kodi kuchuluka kocheperako kotani komwe mungagule pa strip ya temper strip?

Pa kutentha kwa 1/4H ndi 1/2H m'lifupi lofanana (50–600 mm), MOQ nthawi zambiri imakhala tani imodzi pa kukula kulikonse. Pa Full Hard, MOQ ikhoza kukhala yokwera (matani 3–5) chifukwa cha zofunikira pa nthawi ya mphero. Ogawa ambiri amakhala ndi kutentha koyenera ndipo amatha kupereka zinthu zochepa ndi kusintha kwa mtengo pa kg.

Yolembedwa ndi Mr. Chen — Mtsogoleri wa Zaukadaulo ku Ningbo Stainless Steel Co., Ltd. Yodziwika bwino pakusankha zinthu zachitsulo chosapanga dzimbiri, kugwiritsa ntchito zinthu zozizira, komanso njira zoperekera zinthu m'mafakitale. Lumikizani:Instagram | Facebook