Sassan hatimin ƙarfe su ne abubuwan ƙarfe waɗanda aka samar daga lebur ɗin ƙarfe ko coil ta latsawa, ɓarna, lanƙwasa, ko zane a cikin latsa tambarin. Suna bayyana a kusan kowane samfurin da aka ƙera - daga fakitin jikin mota da maƙallan tsari zuwa gidajen kayan aiki da kayan masana'antu. Zaɓin madaidaicin ƙimar ƙarfe shine mafi mahimmancin yanke shawara guda ɗaya a cikin hatimin ƙarfe, saboda yana ƙayyade tsari, ƙarfi, farashi, weldability, da gamawa.
Wannan jagorar yana tafiya cikin fiye da nau'ikan karfe 20 na yau da kullun da ake amfani da su a cikin hatimi, yana kwatanta takarda mai zafi da birgima mai sanyi, yana magance ƙalubalen ƙarfe mai ƙarfi, kuma yana rufe zaɓin jiyya na saman da ƙira-don-ƙera (DFM) mafi kyawun ayyuka. Metal Stamping Parts Ltd yana aiwatar da dubban ton na ƙarfe a kowace shekara a cikin aikace-aikacen kera, masana'antu, da samfuran samfuran mabukaci.
Karfe Grade Selection for bugawa
Zaɓin daidai karfe sa na bukatar daidaita inji Properties, formability, surface quality, da kuma kudin. Teburan da ke ƙasa sun ƙunshi maki mafi yawan amfani da su a cikin masana'antar tambarin duniya.
Cold-Rolled Karfe Maki (JIS / EN / ASTM)
| Grade (JIS) | EN Daidai | ASTM Daidai | C (%) | Mn (%) | Ƙarfin Haɓaka (MPa) | Ƙarfin Ƙarfin Ƙarfafa (MPa) | Elongation (%) | r-darajar | Aikace-aikacen |
|---|---|---|---|---|---|---|---|---|---|
| SPCC | DC01 | A1008 CS Nau'in B | ≤0.12 | ≤0.50 | 140–280 | 270–410 | ≥37 | — | Manufofin manufa na gaba ɗaya, braket |
| SPCD | DC03 | A1008 CS Nau'in A | ≤0.10 | ≤0.45 | 140–260 | 270–390 | ≥39 | ≥1.3 | Drawing applications, shallow draws |
| SPCE | DC04 | A1008 DS Nau'in A | ≤0.08 | ≤0.40 | 120–240 | 270–370 | ≥41 | ≥1.6 | Deep drawing, motoci inner panels |
| SPCF | DC05 | A1008 DDS | ≤0.06 | ≤0.35 | 110–220 | 270–350 | ≥43 | ≥1.9 | Extra-deep drawing, complex shapes |
| SPCG | DC06 | A1008 EDDS | ≤0.02 | ≤0.25 | 100–200 | 270–330 | ≥45 | ≥2.1 | Zane mai zurfi mai zurfi, fa'idodin fallasa |
| SPFH490 | — | A1011 HSLA 50 | ≤0.12 | ≤1.60 | ≥325 | ≥490 | ≥23 | — | Tsarin sassa, firam ɗin wurin zama |
| SPFH540 | — | Saukewa: A1011HSLA60 | ≤0.12 | ≤1.80 | ≥355 | ≥540 | ≥20 | — | Chassis ƙarfafawa |
Makin Karfe Masu Zafi
| Grade (JIS) | EN Daidai | C (%) | Ƙarfin Haɓaka (MPa) | Ƙarfin Ƙarfin Ƙarfafa (MPa) | Elongation (%) | Aikace-aikacen |
|---|---|---|---|---|---|---|
| SPHC | DD11 / HR1 | ≤0.15 | ≥205 | ≥270 | ≥27 | Gabaɗaya kafa, sassa marasa mahimmanci |
| SPHD | DD12 / HR2 | ≤0.10 | — | ≥270 | ≥30 | Aikace-aikacen zane |
| SPHE | DD13 / HR3 | ≤0.06 | — | ≥270 | ≥33 | zane mai zurfi, tsarin mota |
| SS400 | S235JR | ≤0.22 | ≥205 | 400–510 | ≥21 | Bakin tsari, sassa masu nauyi |
| SS490 | S275JR | ≤0.25 | ≥245 | 490–610 | ≥19 | Kayan aikin nauyi |
| SM490A | S355JR | ≤0.20 | ≥275 | 490–610 | ≥22 | Membobin tsarin da ke buƙatar weldability |
Babban Ƙarfe Mai ƙarfi (AHSS) Maki
| Grade | Nau'in | Samuwar (MPa) | UTS (MPa) | Elongation (%) | Lanƙwasa Radius (×t) | Aikace-aikacen |
|---|---|---|---|---|---|---|
| DP590 | Dual Phase | 330–410 | ≥590 | ≥20 | 1.0 | Matsakaicin juriya, ƙarfafawa |
| DP780 | Dual Phase | 440–560 | ≥780 | ≥14 | 1.5 | B-ginshiƙai, katako mai ƙarfi |
| DP980 | Dual Phase | 600–740 | ≥980 | ≥10 | 2.5 | Ƙarfafa tsarin |
| DP1180 | Dual Phase | 850–1050 | ≥1,180 | ≥5 | 4.0 | matsananci-high brackets-streng |
| TRIP590 | TAFIYA | 380–460 | ≥590 | ≥24 | 1.0 | Tsarukan shayar da makamashi |
| TRIP780 | TAFIYA | 450–550 | ≥780 | ≥18 | 1.5 | Tsarin Crash |
| CP780 | Rukunin Mataki | 620–750 | ≥780 | ≥10 | 2.0 | Chassis ƙarfafawa |
| CP1180 | Rukunin Mataki | 900–1100 | ≥1,180 | ≥5 | 3.5 | Ƙarfin kutse |
| MS1200 | Martensitic | 950–1150 | ≥1,200 | ≥4 | 5.0 | Ƙarfafa ƙarfi, katako na kofa |
| FB590 | Ferrite-Bainite | 380–480 | ≥590 | ≥18 | 1.0 | Dabarun, sassan chassis |
| TWIP980 | TWIP | 400–500 | ≥980 | ≥50 | 0.5 | Tsarin nauyi mai nauyi na gaba |
Bakin Karfe maki don bugawa
| Grade | Nau'in | Samuwar (MPa) | UTS (MPa) | Elongation (%) | Magnetic? | Aikace-aikacen |
|---|---|---|---|---|---|---|
| SUS304 | Austenitic | 205 | 520 | ≥40 | No | Kayan aiki bangarori, kayan abinci |
| SUS301 | Austenitic | 205–510 | 520–1,270 | ≥40–10 | No | Springs, shirye-shiryen bidiyo (aiki-hardens) |
| SUS430 | Ferrite | 205 | 450 | ≥22 | Ee | Gyaran kayan ado, abubuwan shaye-shaye |
| SUS410 | Martensitic | 205 | 440 | ≥20 | Ee | Cutlery, bawul sassa |
| SUS316L | Austenitic | 175 | 480 | ≥40 | No | Marine, sinadaran, likita |
Don ƙarin bayani a kan bakin karfe bugawa damar, duba mu bakin karfe bugawa damar. stainless steel hatimi shafi.
Hot-Rolled vs Cold-Rolled Karfe: Wanne Zabi?
Tsarin mirgina yana canza ingancin saman karfe, daidaiton girman, da halayen injiniya. Kwatancen da ke ƙasa yana taimaka muku zaɓi abin farawa daidai don naku karfe bugawa aikace-aikace.
| Dukiya | Hot-Rolled (HR) | Cold-Rolled (CR) |
|---|---|---|
| Surface quality | Mill sikelin, m (Ra 3-8 µm) | Santsi, mai tsabta (Ra 0.5–1.5 µm) |
| Haƙurin kauri | ±0.10–0.15 mm | ± 0.02-0.05 mm |
| Haƙuri mai faɗi | ±1.0–2.0 mm | ±0.2-0.5 mm |
| Typical gauge range | 1.6-12.0 | 0.4-3.2 mm |
| Ƙarfin Haɓaka | Lower (as-rolled) | Mafi girma (mai taurin aiki) |
| Tsawaitawa | Mafi girma | Ƙananan |
| Kudin kowace ton | 15–25% lower | Mafi girma |
| Mafi kyawun for | Sassan tsari, manyan baka masu nauyi, abubuwan da ba a iya gani | Abubuwan da ake iya gani, daidaitattun sassa, madaidaicin-zuwa-matsakaici suna zana |
| Na yau da kullun ayyukan hatimi | Blanking, lankwasawa, kafa | Blanking, zane, kafawa, huda |
| Adhesion fenti | Yana buƙatar ragewa | Madalla bayan tsaftacewa |
Dokokin babban yatsan hannuYi amfani da birgima mai zafi don sassan tsarin inda ƙarewar saman ba ta da mahimmanci kuma ma'auni ya wuce mm 3.
Babban ƙarfin ƙarfi: bugawa Karfe da Magani
Kamar yadda na'ura mai nauyi na kera motoci ke haifar da ɗaukar sabbin matakan AHSS.
Kalubale 1: Magudanar ruwa mai yawa
Ƙarfin ƙarfe mai ƙarfi yana da yawan amfanin ƙasa-zuwa-ƙugiya na 0.65-0.90 (vs. 0.50-0.60 don ƙananan ƙarfe), yana haifar da farfadowa mai mahimmanci bayan kafawa.
Magani:
- Ƙarfafawa ta 2-5° ya danganta da daraja (gwaji-da-kuskure ko ramuwa ta FEA).
- Yi amfani da kayan aikin lanƙwasawa waɗanda ke sarrafa abun da ke gudana ta yankin lanƙwasa.
- Aiwatar da servo presso tare da shirye-shiryen zama a ƙasa matacciyar cibiyar don rage damuwa-sashe a cikin mutuwar.
- Ƙirar ƙira tare da beads masu ƙarfi ko embossments don kulle siffar.
Kalubale 2: Haɓaka Kayan Aikin Kayan aiki
Hard microstructures (martensite, bainite) a AHSS abrade kayan aiki saman 3-10 × sauri fiye da m karfe.
Magani:
- Yi amfani da D2 ko DC53 kayan aiki karfe tare da PVD shafi (TiAlN ko CrN) don matsakaicin kundin.
- Canja zuwa abubuwan da ake sakawa na carbide ko PM (foda metallurgy) kayan aikin karfe (ASP-23, VANADIS 4E) don samar da girma mai girma.
- Ƙara yawan izinin mutuwa zuwa 10-12% na kauri (vs. 5-7% don ƙananan ƙarfe).
- Aiwatar da fim mai bushe-bushe ko matsi mai ƙarfi don rage gogayya.
Kalubale 3: Bukatun walda
AHSS maki na buƙatar kulawar walda a hankali don gujewa laushin yankin da zafi ya shafa (HAZ).
Magani:
- Yi amfani da walda tabo mai juriya tare da sarrafawa na yanzu.
- Inganta ƙarfin lantarki da riƙe lokaci don kowane maki.
- Yi la'akari da waldawar laser don haɗin gwiwa inda kulawar HAZ ke da mahimmanci.
- Tabbatar da ƙarfin walda a kowane AWS D8.1M ko ƙayyadaddun ƙayyadaddun OEM.
Kalubale 4: Fatsawa a Tight Radii
DP da martensitic maki suna da iyakacin tsayin daka (4-14%), yana sanya madaidaicin radius lanƙwasa mai saurin fashewa.
Magani:
- Zane mafi ƙarancin lanƙwasa radius ≥ 2 × kauri abu don DP780; ≥ 4 × don DP1180.
- Orient yana lanƙwasa daidai da jujjuyawa idan zai yiwu.
- Yi amfani da dumama forming (200-300 °C) don mafi buƙatun geometries.
- Yi la'akari da abubuwan da aka ƙera welded - yi amfani da AHSS kawai inda ake buƙatar ƙarfi da ƙaramin ƙarfe a cikin yankin da aka kafa.
Zaɓuɓɓukan Jiyya na Sama don Ƙarfe bugawa Sassan
Maganin saman yana kare kariya daga lalata, inganta bayyanar, da haɓaka fenti. Teburin da ke ƙasa yana kwatanta zaɓuɓɓuka huɗu mafi yawan gama gari don sassan ƙarfe da aka hatimi.
| Magani | Tsari | Nauyin Rufe / Kauri | Salt Spray Resistance (hours) | Paint Adhesion | Weldability Bayan Jiyya | Dangi Cost | Na Musamman Aikace-aikace |
|---|---|---|---|---|---|---|---|
| Electro-galvanized (EG) | Electrodeposition na zinc | 5–15 µm | 200–500 | Kyakkyawan | Kyakkyawan | Ƙananan Matsakaici | Motoci fallasa bangarori |
| Hot-tsoma galvanized (GI) | nutsewa a cikin zurfafa zinc | 45–90 g/m² (both sides) | 300–1,000 | Kyakkyawan (bayan magani) | Fair | Matsakaici | Kayan aiki bangarori, HVAC, gini |
| Phosphating (ƙarfe ko zinc) | Canjin sinadarai | 1-3 µm | 50–150 | Kyakkyawan | Kyakkyawan | Rana sosai | Pre-Paint magani ga duk karfe sassa |
| Electro-coat (e-coat) | Electrophoretic Paint | 15-25 µm | 500–1,000 | N/A (shine fenti) | Talakawa | Matsakaici | motoci karkashin jiki, brackets |
| Dacromet / Geomet | Zinc-aluminum flake | 6–10 µm | 500–1,000+ | Fair | Fair | Matsakaici-High | Fasteners, dakatar sassa, high-lalacewa |
| Foda gashi | Electrostatic spray + gasa | 60–80 µm | 1,000+ | N/A | N/A | Matsakaici | Kayan aiki na waje, kayan daki, abubuwan rufewa |
Jagoran zaɓi:
- Don Motoci Class A da aka fallasa saman: EG + e-coat + topcoat.
- Don sassan tsarin a cikin mahalli masu lalata: GI ko Dacromet.
- Don maƙallan ciki masu tsada: phosphate + foda gashi.
- Don masu ɗaure masu lalata: Dacromet ko Geomet.
DFM Tips don Ƙarfe bugawa Sassan
Ka'idodin ƙira-don-ƙera suna rage farashin mutuwa, haɓaka ingancin sashi, da rage lokutan jagora. Aiwatar da waɗannan jagororin yayin lokacin ra'ayi don guje wa sake fasalin mutuwa mai tsada daga baya.
Dokokin Geometry
- Mafi ƙarancin lanƙwasa radius: 0.5 × kauri abu don CR m karfe; 1.0-4.0 × don AHSS (dogaran daraja).
- Mafi qarancin diamita: ≥ kayan kauri; ≥ 2 × kauri don ramuka a wuraren da aka shimfiɗa.
- Mafi ƙarancin faɗin flange: ≥ 3× kauri abu + lanƙwasa radius.
- Nisa-zuwa-lankwasa: ≥ kauri abu + lanƙwasa radius don hana murdiya.
- Ramin daidaitawa: Perpendicular to the bend line to avoid tearing.
Jagoran Haƙuri
| Feature | Haƙurin Haƙuri | Tare da Ƙarin Ayyuka |
|---|---|---|
| Bayani mara kyau | ± 0.05-0.10 mm | ± 0.02 mm (lafiya-blanking ko aski) |
| Matsayin rami | mm ± 0.05 | ± 0.02 mm (bayan-machining) |
| Lanƙwasa kusurwa | ±1° | ± 0.25 ° (latsa birki tare da rawanin CNC) |
| Flatness | 0.2 mm/100 mm | 0.05 mm/100 mm (bugawa + size) |
| Edge burr | ≤ 0.10 mm | ≤ 0.03 mm (deburring) |
Material and Cost Optimization
- Daidaita ma'auni a cikin sassa a cikin taro don rage yawan kayan abu.
- Sassan gida da kyau akan shimfidar tsiri - 60-75% amfani da kayan abu ne na yau da kullun don mutuwa mai ci gaba; kasa da 55% garantin sake tsarawa.
- Yi la'akari da haɗa sassa da yawa cikin taro mai hatimi guda ɗaya don rage ƙidayar sashi da haɗa ayyukan.
- Ƙayyade jiyya na ƙasa kawai a inda ake buƙata - zaɓin plating ko na waje yana adana farashi.
- Yi amfani da menene karfe bugawa muhimman abubuwa don zaɓar tsakanin mutuƙar ci gaba, mutuƙar canja wuri, ko layin tandem dangane da girma da rikitarwa.
Tambayoyin da ake yawan yi
Menene bambanci tsakanin SPCC da SPCE karfe don yin tambari?
SPCC babban maƙasudin ƙarfe ne mai jujjuya sanyi tare da matsakaicin abun ciki na carbon na 0.12%, dace da sauƙi mai sauƙi da zane mai zurfi. SPCE yana da ƙananan ƙarancin carbon (≤0.08%), ƙananan manganese (≤0.40%), da mahimmancin haɓakawa (≥41% vs. ≥37%), yana sa ya fi kyau ga ayyukan zane mai zurfi. SPCE kuma yana da garantin r-darajar (rabo mai nau'in filastik) na ≥1.6, ma'ana yana tsayayya da bakin ciki yayin mikewa. Yi amfani da SPCC don madaukai da sassa masu lebur; yi amfani da SPCE lokacin da ɓangaren ke buƙatar zane mai zurfi ko hadadden tsari.
Yaushe zan yi amfani da karfe mai zafi maimakon karfe mai sanyi don yin tambari?
Zaɓi karfe mai zafi lokacin da sashin ya kasance mai tsari maimakon kayan kwalliya, ma'aunin ya wuce 3.2 mm (bayan yawancin samuwar sanyi), ba a buƙatar juriya mai ƙarfi, ko farashi shine direba na farko. Ƙarfe mai zafi mai zafi yana kashe 15-25% ƙasa da kowace ton kuma yana da tsayin daka mafi girma, wanda ke taimakawa wajen lankwasawa da samar da sassa masu kauri. Koyaya, saman girmansa na niƙa yana buƙatar fashewa ko tsintsawa kafin zanen, kuma haƙurin kauri shine ± 0.10-0.15 mm akan ± 0.02-0.05 mm don birgima mai sanyi.
Ta yaya zan hana fatattaka lokacin yin hatimin ƙarfe mai ƙarfi mai ƙarfi?
Cracking a AHSS yawanci yana faruwa a radiyoyin lanƙwasa waɗanda ke da matsewa don ƙarfin haɓakar sa. Domin DP590, zane lanƙwasa radii ≥ 1 × abu kauri; don DP780, ≥ 1.5 ×; don DP980, ≥ 2.5 ×; kuma don maki na Martensitic (MS1200), ≥ 5 × kauri. Gabas yana lanƙwasa daidai da jujjuyawar, yana amfani da man shafawa mai ƙarfi, kuma yayi la'akari da ƙirƙirar ɗumi (200-300 ° C) don mafi ƙarancin geometries. Gudanar da simintin FEA kafin ginawa ya mutu yana gano haɗarin fashewa da wuri.
Abin da surface jiyya ne mafi kyau ga waje karfe bugawa sassa?
Domin dogon lokacin da waje daukan hotuna, zafi-tsoma galvanizing (GI) samar da mafi kyau kudin-to-kariya rabo tare da 300-1,000 hours na gishiri fesa juriya dangane da shafi nauyi. Don ɓangarorin da ke buƙatar gama kayan ado, rufin foda akan saman phosphated yana ba da kyakkyawan juriya na lalata (sa'o'i 1,000+ gishiri) tare da zaɓuɓɓukan launi da rubutu. Dacromet ko Geomet zinc-aluminum flake coatings ne manufa domin fasteners da kananan sassa inda rufi kauri uniformity da hydrogen-embrittlement hadarin ne damuwa.
Menene kyakkyawan ƙimar amfani da kayan don ci gaba da mutuƙar tambarin ƙarfe?
Adadin amfani da kayan aiki na 60-75% ana ɗauka yana da kyau don ci gaba da tambarin sassa na ƙarfe. Ƙimar da ke ƙasa da kashi 55 cikin ɗari suna ba da shawarar fasalin ɓangaren don inganta haɓakar gida - haɓakawa gama gari sun haɗa da jujjuya yanayin juzu'i, raba layukan datsa tsakanin sassan da ke kusa, ko sake fasalin gemfurin mai ɗaukar hoto. Sama da kashi 75% ana iya samun amfani don sassauƙan sassa rectangular. Ya kamata a kimanta duk wani guntun datti don yin amfani da na biyu-bayan ƙananan sassa daga tsiri ɗaya.
Kammalawa
Nasarar tambarin ƙarfe yana farawa tare da daidaita darajar da aikace-aikacen. Ƙarfe mai laushi (SPCC-SPCE) yana sarrafa yawancin sassa na gabaɗaya da tsada-daidai, yayin da maki AHSS (DP, TRIP, CP, MS) ke ba da ƙimar ƙarfin-zuwa nauyi waɗanda aikace-aikacen kera motoci da masana'antu ke buƙata - a cikin ƙarancin sarrafa tsari da kayan aiki mai wahala. Zaɓin jiyya na saman ƙasa, haƙuri, da ƙa'idodin DFM sun ƙara ƙayyade ko ɓangaren ƙarfe mai hatimi yana ba da ingantaccen aiki a farashi mai gasa.
Shirye don tattauna aikin tambarin karfe na gaba? Tuntuɓi Metal Stamping Parts Ltd don tallafin injiniya, jagorar zaɓin kayan aiki, da faɗar samarwa mai gasa.