TL;DR:Xaiv lub siab zoo rautxias-kuav stainless hlau stripyog qhov kev txiav txim siab tseem ceeb tshaj plaws ntawm cov khoom siv hauv kev luam ntawv raug. Phau ntawv qhia no piv 1/4H (quarter-hard), 1/2H (half-hard), thiab Full Hard (FH) tempers hla tsib qhov ntsuas ntawm daim ntawv thov - formability, springback, zoo ntawm ntug, lub neej qaug zog, thiab tus nqi - siv cov ntaub ntawv tensile, cov txiaj ntsig ntawm kev sim khoov los ntawm peb lub Hoobkas ntawm Ningbo Stainless Steel, thiab cov lus tawm tswv yim los ntawm cov khw muag khoom luam ntawv thoob plaws hauv kev lag luam tsheb, connector, thiab caij nplooj ntoos hlav.
Vim li cas Hardness Temper yog thawj qhov kev qhia tshwj xeeb rau Precision Strip
Hauv kuv 15 xyoo ntawm kev tswj hwm kev ua haujlwm ntawm Ningbo Stainless Steel Co., Ltd., qhov kev tsis txaus siab zoo tshaj plaws uas kuv ntsib tsis yog hais txog qib sib xyaw - nws yog hais txog qhov nyuaj. Ua tus neeg muab khoom ntawmcov khoom siv hlau tsis xeb txias, Kuv tshuaj xyuas cov teeb meem zoo ntsig txog kev kub ntxhov txhua lub lim tiam. Lub khw muag khoom xa khoom xaj "304 stainless hlau strip" tab sis tsis qhia meej txog qhov kub ntxhov. Lub Hoobkas xa cov khoom siv annealed (mos). Cov pwm stamping tsim cov burrs. Kev ua haujlwm khoov ua rau lub caij nplooj ntoos hlav tsis tuaj yeem lees txais. Cov khoom tsis ua haujlwm QC. Lub luag haujlwm yog rau tus neeg muag khoom siv, tab sis qhov ua rau yog qhov tsis muaj cov lus qhia txog kev kub ntxhov hauv daim ntawv yuav khoom.
Cov hlau stainless hlau uas dov txias muaj nyob rau hauv qib kub uas tau txhais los ntawm ASTM A240 thiab JIS G4305 cov qauv, nrog rau qhov nyuaj xws li mos annealed (feem ntau 80–90 HRB lossis 150–180 HV) mus rau tag nrho tawv (feem ntau 30–38 HRC lossis 350–400 HV). Lub temper yog ua tiav los ntawm kev tswj hwm qhov feem pua ntawm kev txo qis txias dov thiab lub voj voog annealing kawg. Rau cov ntawv thov stamping precision, peb lub tempers feem ntau yog 1/4H, 1/2H, thiab Tag Nrho Hard (FH). Txhua tus nyob hauv ib qho chaw tshwj xeeb ntawm qhov nkhaus formability-versus-strength, thiab kev xaiv qhov tsis raug yuav raug nyiaj hauv cov khoom tsis lees paub, cov cuab yeej hnav, lossis cov nqi khoom siv ntau dhau.
Phau ntawv qhia no qhia txog kev xaiv cov txheej txheem uas kuv siv thaum qhia cov kws ua haujlwm yuav khoom. Nws tau teeb tsa nyob ib puag ncig tsib qhov ntsuas uas qhia ncaj qha rau cov txiaj ntsig ntawm kev tsim khoom.
Qhov Hardness Range thiab Mechanical Property Comparison
Cov lus hauv qab no piav qhia txog cov khoom siv kho tshuab rau 304 stainless hlau strip ntawm txhua lub sijhawm, raws li ASTM A240 qhov txwv tus nqi thiab kev sim tensile hauv tsev los ntawm peb cov kab ntau lawm:
| Cov Qauv | 1/4H (Ib Feem Plaub-Nruab Nrab) | 1/2H (Ib Nrab-Nyuaj) | Tag Nrho Hard (FH) |
|---|---|---|---|
| Rockwell hardness ntau yam | 88–96 HRB | 96–104 HRB | 30–38 HRC |
| Vickers hardness ntau yam | 170–210 HV | 210–260 HV | 320–400 HV |
| Lub zog tensile (MPa) | 520–620 | 620–780 | 860–1,150 |
| Lub zog tawm los 0.2% (MPa) | 310–380 | 380–520 | 690–930 |
| Kev ntev % (50 hli ntsuas) | 25–40% | 10–20% | 2–6% |
| Txo qhov txias % | ~11% | ~21% | ~50% |
| Yam tsawg kawg nkaus khoov vojvoog (90 °, longitudinal) | 0.5t (zoo heev) | 1t (zoo) | 3t–5t (txwv) |
Qhov kev pauv pauv tseem ceeb pom tau thoob plaws peb kab: thaum qhov nyuaj nce ntxiv, lub zog tensile thiab cov zis nce ntxiv, tab sis elongation - thiab yog li ntawd formability - txo qis heev. Kev xaiv lub zog kom raug txhais tau tias nrhiav qhov taw tes ntawm qhov nkhaus no uas qhov kev xav tau ntawm qhov khoom raug ua tiav yam tsis tau them rau lub zog tsis tsim nyog lossis kev txom nyem los ntawm kev tsis txaus formability. Pebcov khoom siv stainless hlau tshwj xeebnpog tag nrho cov qhov nyuaj ntawm annealed mus txog FH, thiab kuv ib txwm qhia cov neeg yuav khoom kom sim cov qauv coil ntawm lawv cov kab ntau lawm ua ntej cog lus rau ntau qhov ntau.
Daim Ntawv Thov Qhov Ntev 1: Kev Tsim Tau - Kev Kos Duab Sib Sib, Kev Khoov, thiab Kev Sib Txuas
Qhov yuav tsum tau ua kom zoo yog qhov ntsuas uas txwv tshaj plaws hauv kev xaiv lub zog. Yog tias kev ua haujlwm stamping cuam tshuam nrog kev kos duab tob (qhov sib piv kos > 1.8), kev tsim ntau kauj ruam nyuaj, lossis cov khoov vojvoog nruj qis dua 1.5 × cov khoom tuab, kev xaiv lub zog raug yuam kom mus rau qhov kawg qis dua ntawm qhov ntsuas qhov nyuaj.
1/4H — Nyiam rau kev tsim nruab nrab.Nrog 25–40% elongation thiab muaj peev xwm khoov 180° tiaj tus yam tsis tawg (0t khoov radius), 1/4H yog qhov kev xaiv tsis siv neeg rau cov khoom siv stamped uas sib xyaw ua ke nrog kev xav tau lub zog. Cov ntawv thov ib txwm muaj xws li: cov khoom siv bracket tsheb nrog ntau theem khoov, cov vaj huam sib luag hluav taws xob nrog cov npoo flanged, thiab cov khoom siv kho kom zoo nkauj uas xav tau qhov zoo nkauj tom qab tsim.
1/2H — Haum rau kev tsim cov khoom ntiav nrog lub zog siab dua.Kev ntev ntawm 10–20% tso cai rau 90° khoov ntawm 1t radius thiab nruab nrab flange forming. Lub zog tso zis siab dua txhais tau tias qhov tsim tau tuav nws cov duab zoo dua tom qab ejection ntawm lub pwm. Cov ntawv thov feem ntau: lub caij nplooj ntoos hlav clips, contact terminals rau connectors, thiab roj teeb contact strips qhov twg nruab nrab khoov ua raws li elastic function.
Puag Nkaus — Tsis tuaj yeem ua kom tiaj tus; siv rau kev ua haujlwm tiaj tus thiab xuas nrig.Yog tias qhov ntev qis dua 6%, cov khoom siv FH tsis tuaj yeem khoov lossis kos yam tsis muaj kev tawg. Nws yog teev rau cov khoom uas tsim los ntawm kev xuas nrig, blanking, lossis shearing xwb - tsis muaj kauj ruam tsim. Piv txwv li: cov hniav pom blanks, scraper blades, shim stock, thiab cov ntsiab lus caij nplooj ntoos hlav tiaj tus uas tsim los ntawm kev stamping los ntawm ib daim kab tiaj tus yam tsis muaj kev khoov tom qab.
Los ntawm qhov pom ntawm kev yuav khoom, yog tias koj daim duab kos muaj qhov khoov vojvoog me dua 3t, Full Hard tsis yog qhov kev xaiv. Yog tias nws suav nrog qhov khoov ntawm 1.5t lossis me dua, 1/4H yog qhov kev xaiv zoo. Tsuas yog thaum cov khoov yog ntawm 2t lossis loj dua thiab qhov khoom xav tau kev khov kho uas koj yuav tsum xav txog 1/2H. Cov neeg muab khoom lag luam xws licov tshuab txiav tshwj xeeb precision strip millsmuab tib lub laj thawj xaiv qhov kub hauv lawv cov ntaub ntawv kev siv tshuab, lees paub tias 1 / 4H yog qhov pib pom zoo tshaj plaws rau cov neeg yuav khoom stamping thawj zaug.
Daim Ntawv Thov Qhov Ntev 2: Kev Them Nyiaj Rov Qab thiab Kev Ruaj Ntseg Qhov Ntev
Springback yog qhov elastic rov qab los ntawm cov khoom siv tom qab lub nra hnyav stamping raug tso tawm. Cov kub siab dua muaj lub zog tso zis siab dua, uas txhais tau tias ntau dua springback - thiab ntau dua kev them nyiaj xav tau hauv kev tsim pwm.
Peb pab neeg tsim khoom tau ua qhov kev sim tswj hwm springback siv 0.5 hli tuab 304 strip ntawm peb lub tempers, khoov rau lub kaum sab xis 90 ° hauv V-die nrog 2 hli punch radius:
| Kub siab | Lub Caij Nplooj Ntoos Hlav (nruab nrab) | Kev Siv Lub Siab Kom Tshem Tawm | Kev Hloov Pauv Ib Feem Mus Rau Ib Feem ± |
|---|---|---|---|
| 1/4H | 2.5° | Tsis tas yuav tsum muaj | 0.3° |
| 1/2 teev | 4.8° | Yuav tsum tau - overbend ntawm 3–5 ° lossis kauj ruam coining | 0.6° |
| Tag Nrho Hard | 9–12° | Heev - feem ntau tsis tuaj yeem stampable rau cov khoom khoov | 1.5°+ |
Rau kev ntaus cim meej qhov twg qhov kev kam rau siab yog ± 0.1 hli hla ib qho yam ntxwv uas tsim, 1/4H cov khoom siv tuaj yeem ua tiav lub hom phiaj yam tsis muaj kev ua haujlwm thib ob. 1/2H xav tau kev them nyiaj overbend hauv lub pwm lossis kauj ruam coining ntawm qab ntawm stroke.Cov lus qhia txog kev yuav khoom siv stainless hlauxav kom kuaj xyuas tus cwj pwm ntawm lub caij nplooj ntoos hlav ntawm cov cuab yeej tsim khoom tiag tiag ua ntej ua tiav qhov kev qhia tshwj xeeb ntawm lub zog, vim tias cov qauv ntawm cov pwm thiab lubrication ob qho tib si cuam tshuam rau qhov loj ntawm lub caij nplooj ntoos hlav tsis hais txog qhov nyuaj ntawm cov khoom siv. Full Hard tsis zoo siv rau txhua yam ntxwv khoov hauv kev stamping precision - lub caij nplooj ntoos hlav loj dhau thiab hloov pauv dhau rau kev tswj hwm qhov ntev sib xws.
Kuv qhia cov kws ua haujlwm yuav khoom kom qhia qhov yuav tsum tau ua kom lub springback rau tus tsim pwm ua ntej ua tiav qhov temper spec. Yog tias lub pwm twb tau tsim rau ib qho temper tshwj xeeb thiab koj sim hloov cov khoom siv tawv dua, cov khoom yuav tsis dhau qhov kev tshuaj xyuas qhov ntev vim yog springback.
Daim Ntawv Thov Qhov Ntev 3: Qhov Zoo ntawm Ntug Tom Qab Xuas thiab Ua Kom Puv
Qhov zoo ntawm ntug txiav uas tsim los ntawm kev nias - tshwj xeeb tshaj yog qhov sib piv ntawm thaj chaw txiav huv rau thaj chaw tawg ntawm ntug punched - yog cuam tshuam ncaj qha los ntawm qhov nyuaj ntawm cov khoom. Peb cov txiaj ntsig sim ntawm 1.0 hli 304 strip ntawm ntau yam kub qhia tau tias muaj tus qauv meej:
- 1/4H:Thaj chaw txiav huv = 55–60% ntawm cov khoom tuab. Cov khoom mos dua yuav deform ntau dua ua ntej tawg, ua rau thaj chaw hlawv loj dua thiab dov tsawg dua. Txawm li cas los xij, cov npoo ntawm ntug yuav pom tseeb dua me ntsis vim yog qhov ductility ntawm cov khoom.
- 1/2H:Thaj chaw txiav huv = 45–50%. Qhov nyuaj dua yuav txo qhov chaw hloov pauv yas, ua rau qhov chaw tawg huv dua tab sis dov ntau dua ntawm sab nkag. Qhov siab ntawm burr feem ntau yog 0.02–0.05 hli ntawm lub pwm ntse.
- Tag Nrho Hard:Thaj chaw txiav huv = 30–40%. Cov khoom siv tawg ua ntej thaum lub sijhawm xuas nrig, ua rau ntug nto tawg feem ntau nrog thaj chaw hlawv tsawg kawg nkaus. Qhov siab ntawm Burr yog qhov qis tshaj plaws (0.01–0.03 hli) tab sis qhov ncaj ntawm ntug kuj yog qhov tsis zoo tshaj plaws.
Rau cov ntawv thov uas qhov zoo ntawm ntug yog qhov tseem ceeb rau kev zoo nkauj - xws li cov kab txiav pom tseeb lossis cov vaj huam sib luag kho kom zoo nkauj - 1/4H lossis 1/2H ua rau pom qhov chaw zoo dua. Rau cov khoom ua haujlwm uas qhov tseeb ntawm qhov loj ntawm cov duab dawb paug yog qhov tseem ceeb, thiab qhov zoo li ntug yog qhov thib ob, qhov kub tawv dua ua rau kev txiav huv dua thiab tsis muaj kev pleev xim ntau.
Daim Ntawv Thov Qhov Ntev 4: Lub Neej Qaug Zog rau Cov Khoom Siv Cyclic-Loaded Stamped
Cov khoom uas muaj cov cim uas muaj kev thauj khoom ntau zaus - cov caij nplooj ntoos hlav, cov clips, cov ntiv tes sib cuag, thiab cov khoom latch - yuav tsum tau ua tib zoo saib xyuas kev xaiv lub zog. Peb qhov kev sim qaug zog hauv tsev (ASTM E466, R = 0.1, 10 Hz) ntawm 304 cov qauv cantilever beam stamped tau qhia txog cov qauv kev ua haujlwm qaug zog sib txawv:
- 1/4H:Qhov txwv ntawm kev qaug zog ntawm 10⁷ voj voog = 220 MPa. Kev sib xyaw ua ke ntawm kev ywj pheej thiab lub zog nruab nrab muab kev tiv thaiv zoo rau kev tawg. Txawm li cas los xij, cov khoom mos mos yuav raug kev puas tsuaj ntawm qhov chaw thaum lub sijhawm tuav, uas tuaj yeem ua rau cov kab nrib pleb qaug zog.
- 1/2H:Qhov txwv ntawm kev qaug zog ntawm 10⁷ voj voog = 290 MPa. Qhov sib piv ntawm lub zog thiab qhov hnyav siab dua ua rau 1/2H yog qhov kev xaiv zoo tshaj plaws rau cov khoom siv stamped uas muaj kev qaug zog. Qhov txwv ntawm kev ua siab ntev yog kwv yees li 38% ntawm lub zog tensile, sib xws nrog tus cwj pwm qaug zog ntawm cov hlau tsis xeb.
- Tag Nrho Hard:Qhov txwv kev qaug zog ntawm 10⁷ voj voog = 200 MPa (qhov tawg ntawm qhov chaw tseem ceeb). Txawm hais tias muaj lub zog tensile siab tshaj plaws, cov khoom siv FH muaj qhov tsis kam qaug zog qis dua vim tias qhov tsis zoo ntawm qhov chaw - suav nrog ntug stamping shear - ua haujlwm ua qhov chaw pib tawg. Qhov tawv ntawm qhov tawg kuj raug txo qis ntawm qib nyuaj no.
Qhov tseem ceeb uas yuav tsum nco ntsoov: rau cov springs thiab clips uas muaj loaded raws li statistical (txhiab txhiab lub voj voog), 1/2H muab qhov kev ua tau zoo tshaj plaws ntawm kev qaug zog. Rau cov khoom uas muaj kev nyab xeeb thiab raug ntau lab lub voj voog, xav txog seb qhov khoom puas tuaj yeem tsim nrog 1/4H lub zog thiab qhov cross-section loj dua, vim tias qhov zoo ntawm kev qaug zog ntawm lub zog tensile siab dua raug tshem tawm los ntawm kev txo qis kev kam rau qhov tsis zoo.
Daim Ntawv Thov Qhov Ntsuas 5: Tus Nqi thiab Kev Siv Tau Zoo ntawm Cov Khoom Siv
Qhov sib txawv ntawm tus nqi ntawm cov tempers tsis yog qhov tseem ceeb hauv cov khoom siv nws tus kheej - tus nqi hlau puag yog tib yam rau ib qib muab. Qhov sib txawv ntawm tus nqi los ntawm cov khoom tsim tawm thiab kev muaj khoom:
- 1/4Hyog cov khoom siv temper uas muaj ntau tshaj plaws thoob plaws cov neeg faib khoom stainless strip. Lub sijhawm ua khoom los ntawm peb lub tsev rau khoom feem ntau yog 1-3 hnub ua haujlwm. Vim tias 1/4H yog cov txheej txheem txo qis dua, cov khoom siv dov yog siab dua, thiab tus nqi tsim khoom ib tuj yog kwv yees li 5-8% qis dua FH.
- 1/2 teevmuaj cov khoom muaj nyob rau hauv Tshuag zoo ib yam li 1/4H hauv cov lag luam loj. Tus nqi them siab tshaj plaws yog tsawg heev - feem ntau yog 2–3% dhau 1/4H vim yog cov kev cai tswj hwm nruj dua.
- Tag Nrho Hard (FH)yuav tsum tau ua tib zoo teem sijhawm ua haujlwm vim tias qhov txo qis txias siab (50% +) tsim cov cua sov tseem ceeb thaum lub sijhawm dov thiab xav tau ntau zaus anneal dhau rau nruab nrab softening. Lub sijhawm ua khoom feem ntau yog 10-15 hnub ua haujlwm tshwj tsis yog tias muaj Tshuag. Tus nqi them siab yog 10-15% dhau 1/4H rau qhov sib npaug ntawm qhov chaw tiav.
Rau cov neeg yuav khoom thawj zaug uas ntsuas cov khoom siv stamping precision, kuv xav kom pib nrog 1/2H ua tus qauv pib thiab txav mus rau 1/4H tsuas yog tias kev ua haujlwm tsim khoom xav tau qhov ductility ntxiv, lossis mus rau FH tsuas yog tias qhov khoom yog ib feem tiaj tiaj uas xav tau qhov nyuaj tshaj plaws. Qhov no txo qhov kev pheej hmoo ntawm kev muab khoom thiab khaws cov nqi khoom siv ntawm qhov nruab nrab ntawm qhov kub.
Piv txwv txog Kev Qhia Txog Kev Siv: Yuav Sau Ib Kab Lus Temper Li Cas Hauv Koj Daim Ntawv RFQ
Yuav kom ntseeg tau tias koj tus neeg muag khoom xa khoom raws li qhov xav tau, suav nrog cov lus qhia hauv qab no hauv koj daim ntawv yuav khoom:
Cov Khoom Siv:304 Stainless Steel Sawb, Txias Rolled
Tus Qauv:ASTM A240 / A240M
Kub:1/2H (Ib Nrab-Nyuaj), ib ASTM A240 Rooj 2
Qhov nyuaj ntau yam:96–104 HRB los yog sib npaug 210–260 HV
Lub zog tensile:620–780 MPa (tau txheeb xyuas raws li ASTM A370)
Qhov tuab:0.80 hli ± 0.03 hli
Dav:200 hli ± 0.5 hli (ntug txiav)
Xwm txheej ntug:Txiav, tshem tawm, qhov siab tshaj plaws burr 0.03 hli
Qhov Chaw Tiav:2B (ua tiav zeb, ob sab)
Daim Ntawv Pov Thawj:MTR raws li EN 10204 Hom 3.1, suav nrog qhov nyuaj thiab qhov tensile
Kev Ntsuas:Kev kuaj xyuas qhov nyuaj ntawm txhua lub kauj - 3 qhov nyeem ib lub kauj, qhia qhov nruab nrab thiab ntau yam
Kuv xav kom koj muab cov lus qhia no rau txhua RFQ, txawm tias yog cov xaj rov ua dua. Tus nqi ntawm kev suav nrog peb kab ntxiv rau ntawm daim ntawv xaj yuav khoom yog xoom. Tus nqi ntawm kev tau txais qhov kub tsis raug - kaw kab, kho pwm, xa khoom rov qab - feem ntau tshaj tus nqi khoom nws tus kheej.
Kev Txiav Txim Siab: Xaiv Lub Caij Nyoog Zoo Rau Koj Daim Ntawv Thov
| Yog Koj Lub Chaw Xav Tau… | Pom Zoo Temper | Tsis txhob |
|---|---|---|
| Kev sib xyaw ua ke ntawm ntau yam khoov, kos tob, lub vojvoog nruj ≤ 1t | 1/4H | 1/2H, FH |
| Cov khoov qis ntawm 2t+ radius, xav tau lub zog nruab nrab | 1/2 teev | FH (tsis tuaj yeem tsim tau) |
| Tsuas yog daim dawb paug xwb, tsis muaj kev tsim, qhov nyuaj tshaj plaws | Tag Nrho Hard | 1/4H, 1/2H (mos dhau) |
| Lub caij nplooj ntoos hlav lossis clip muaj voj voog siab, qhov qaug zog tseem ceeb | 1/2 teev | FH (qhov tsis zoo ntawm qhov chaw txo qhov qaug zog) |
| Kev kam rau siab ntawm qhov ntev ntawm cov yam ntxwv tsim (± 0.05 hli) | 1/4H | 1/2H (kev hloov pauv ntawm lub caij nplooj ntoos hlav), FH |
| Zoo nkauj ntug zoo nkauj, pom qhov chaw nto | 1/4H los yog 1/2H | FH (cheeb tsam tsis zoo) |
| Kev hnav tsis kam, qhov chaw sib cuag abrasive | Tag Nrho Hard | 1/4H, 1/2H (qhov chaw khawb tau yooj yim) |
| Tus nqi qis tshaj plaws rau ib feem, kev muab khoom yooj ywm | 1/2H (qhov pib) | FH (tus nqi them ua ntej, lub sijhawm ua khoom ntev dua) |
Xaus lus
Qhov kev xaiv ntawm 1/4H, 1/2H, thiab Full Hard txias-kuav stainless hlau strip rau precision stamping yog ib qho kev txiav txim siab engineering ntau qhov ntev uas tsis tuaj yeem txo qis rau "nyuaj dua yog qhov zoo dua" lossis "mos dua yog qhov muaj kev nyab xeeb dua." Los ntawm kev soj ntsuam daim ntawv thov hla tsib qhov ntev - formability, springback tswj, ntug zoo, kev ua haujlwm qaug zog, thiab tus nqi khoom siv - cov pab pawg neeg yuav khoom tuaj yeem qhia meej qhov kub kom raug nrog kev ntseeg siab. NtawmNingbo Stainless Hlau, peb muab kev taug qab tag nrho, cov ntawv qhia txog kev sim zeb, thiab kev txheeb xyuas qhov nyuaj ua ntej xa khoom rau txhua qhovtxias-kuav stainless hlau stripkev txiav txim, los ntawm 1-tuj cov qauv ntau mus rau 100-tuj ntau lawm khiav. Kuv xav kom suav nrog cov lus qhia txog qhov kub thiab txias meej meej hauv koj RFQ thiab thov daim ntawv pov thawj hardness siv ASTM A240 lossis JIS G4305 - nws yog tib txoj hauv kev zoo tshaj plaws los xyuas kom meej tias cov khoom xa tuaj phim cov khoom siv hais.
Cov Lus Nug Feem Ntau
Qhov txawv ntawm 1/4H, 1/2H, thiab Full Hard stainless hlau strip yog dab tsi?
Cov no yog cov qib kub uas txiav txim siab los ntawm feem pua ntawm kev txo qis txias thaum lub sijhawm dov. 1/4H (~ 11% txo) muab qhov zoo tshaj plaws formability nrog HRB 88–96. 1/2H (~ 21% txo) sib npaug lub zog thiab nruab nrab forming ntawm HRB 96–104. Tag Nrho Hard (~ 50% txo) muab qhov siab tshaj plaws hardness ntawm HRC 30–38 tab sis tsis tuaj yeem tsim - nws tsuas yog siv rau cov khoom tiaj tiaj xwb.
Puas tuaj yeem khoov cov hlau stainless hlau Full Hard?
Cov khoom siv Full Hard muaj qhov ntev qis dua 6%, uas txhais tau tias nws yuav tawg ntawm txhua qhov khoov vojvoog hauv qab 3-5 npaug ntawm cov khoom tuab. Rau cov khoom siv stamping precision uas xav tau khoov, 1/4H lossis 1/2H yog qhov kev xaiv tsim nyog. Full Hard yuav tsum tau teev tseg tsuas yog rau kev ua haujlwm tiaj tus lossis xuas nrig ntaus.
Lub zog twg zoo tshaj plaws rau cov ntawv nplaum caij nplooj ntoos hlav thiab cov chaw sib cuag?
1/2H (ib nrab-tawv) muab qhov kev sib xyaw zoo tshaj plaws ntawm lub zog tso zis, kev sib xws ntawm lub caij nplooj ntoos hlav, thiab lub neej qaug zog rau cov ntawv thov caij nplooj ntoos hlav. Peb qhov kev sim qaug zog qhia tau tias 1/2H muaj qhov txwv qaug zog ntawm kwv yees li 290 MPa ntawm 10⁷ voj voog - qhov siab tshaj plaws ntawm peb lub tempers rau cov khoom stamped cyclically loaded.
Kuv yuav ua li cas thiaj paub tseeb tias qhov kub ntawm cov hlau tsis xeb tau txais?
Siv lub tshuab ntsuas Rockwell hardness uas nqa tau (HRB scale rau 1/4H thiab 1/2H, HRC scale rau FH) rau ntawm qhov chaw huv si thiab tiaj tus ntawm daim kab xev. Xwb, kev ntsuas Vickers microhardness ntawm qhov seem hla muab kev nyeem ntawv tseeb dua. Thov daim ntawv pov thawj kuaj zeb uas qhia txog qhov kub thiab txias - ASTM A240 xav kom tus neeg muag khoom tshaj tawm qhov nyuaj rau txhua qhov kub thiab txias.
Puas yog qhov kub ntxhov cuam tshuam rau qhov corrosion tsis kam ntawm 304 stainless hlau strip?
Tsis yog — cov tshuaj lom neeg sib xyaw (18% Cr, 8% Ni) tsis hloov pauv nrog qhov kub. Txawm li cas los xij, qhov xwm txheej ntawm qhov chaw tuaj yeem txawv: cov kub tawv dua yuav muaj qhov chaw passivated ntau dua me ntsis los ntawm cov txheej txheem dov, tab sis qhov kev tiv thaiv corrosion hauv kev pabcuam yog zoo ib yam thoob plaws cov kub rau qhov tiav ntawm qhov chaw (2B, No. 4, lossis BA).
Qhov tsawg kawg nkaus kom muaj nuj nqis rau cov ntawv nplaum kub yog dab tsi?
Rau 1/4H thiab 1/2H tempers hauv qhov dav dav (50–600 hli), MOQ feem ntau yog 1 metric ton rau ib qhov loj. Rau Full Hard, MOQ yuav siab dua (3–5 tons) vim yog qhov yuav tsum tau ua raws li lub sijhawm teem tseg. Feem ntau cov neeg faib khoom khaws cov tempers txheem thiab tuaj yeem muab cov khoom me me nrog kev hloov kho tus nqi ib-kg.
Sau los ntawm Mr. Chen — Tus Thawj Coj Kev Txawj Ntse ntawm Ningbo Stainless Steel Co., Ltd. Tshwj xeeb hauv kev xaiv cov khoom siv hlau tsis xeb, daim ntawv thov dov txias, thiab kev daws teeb meem kev xa khoom hauv kev lag luam. Txuas:Instagram | Facebook
Lub sijhawm tshaj tawm: Lub Xya Hli-14-2026
