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Quilted bututu maras sumul
Bayanin samarwa:
Outer diamita na karfe bututu 12-377
Karfe bututu bango kauri na 2-50
Abubuwan gama gari:
10# 0.07~0.13 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035
20# 0.17~0.23 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035
35# 0.32~0.39 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035
45# 0.42~0.50 0.17~0.37 0.50~0.80 ≤0.035 ≤0.035
40cr 0.37~0.44 0.17~0.37 0.50~0.80 ≤0.035 ≤0.035 0.08~1.10
25Mn 0.22~0.2 0.17~0.37 0.70~1.00 ≤0.035 ≤0.035 ≤0.25
37Mn5 0.30~0.39 0.15~0.30 1.20~1.50 ≤0.015 ≤0.020
Gabatarwa:
Quilted sumul bututu ne wani irin high ainihin karfe bututu abu bayan sanyi zane ko zafi mirgina.Domin babu wani Layer na oxide akan bangon ciki da na waje na madaidaicin bututun ƙarfe, [1] ƙarƙashin matsanancin matsin lamba ba tare da yabo ba, daidaitaccen madaidaici, babban ƙarewa, lankwasawa mai sanyi ba tare da nakasawa ba, flaring, lallausan ba tare da fasa da sauransu ba, ana amfani da shi galibi don samar da na'urorin pneumatic ko na'ura mai aiki da karfin ruwa, irin su cylinders ko cylinders, wanda zai iya zama maras kyau.Abubuwan sinadaran na bututu maras nauyi shine carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, chromium Cr
Quilted bututu maras sumul yana ɗaukar fasahar sarrafawa
Ana sarrafa bututu maras sumul ta hanyar birgima.Saboda saura matsawa matsa lamba a kan saman Layer, yana da taimako don rufe ƙananan fasa a saman da kuma hana fadada yashwa.Yana iya inganta juriya na lalata da kuma jinkirta tsarawa ko fadada faɗuwar gajiya, don inganta ƙarfin gajiyar bututun ƙarfe.Ta hanyar yin birgima, ana yin aikin sanyi mai ƙarfi mai ƙarfi akan saman mirgina, wanda ke rage naƙasa na roba da filastik na mahaɗin da ke niƙa, don haka haɓaka juriya na bangon ciki na bututun ƙarfe na quilted da guje wa kuna. lalacewa ta hanyar niƙa.Bayan mirgina, raguwar ɓacin rai zai iya inganta kayan dacewa.
Rolling machining wani nau'i ne na injina kyauta.A yanayin zafi na al'ada, ana amfani da nakasar filastik na ƙarfe don lalata ƙananan ƙarancin ƙarancin aikin aikin don cimma manufar canza tsarin farfajiya, halayen injiniya, siffar da girman.Saboda haka, wannan hanya na iya cimma dalilai guda biyu na gogewa da ƙarfafawa a lokaci guda, wanda ba zai iya yin niƙa ba.
Ko wace irin hanyar sarrafawa za a yi amfani da ita, koyaushe za a sami lallausan wuka masu kyau da madaidaicin madaidaicin a saman sassan sassan, da kuma al'amarin tudu kololuwa da kwaruruka.
Rolling aiki ka'idar: Yana da wani irin matsa lamba karewa aiki, shi ne amfani da karfe a cikin al'ada zafin jiki yanayin sanyi filastik halaye, da yin amfani da mirgina kayan aikin don yin wani matsa lamba a kan workpiece surface, sabõda haka, workpiece surface karfe filastik. kwarara, cika a cikin asali saura low concave trough, da kuma cimma workpiece roughness darajar rage.Saboda da filastik nakasawa na birgima surface karfe, da surface nama sanyi hardening da hatsi thinning, samuwar m fiber, da samuwar saura danniya Layer, taurin da ƙarfi, don haka inganta lalacewa juriya, lalata juriya da karfinsu na workpiece surface.Rolling hanya ce ta injin filastik ba tare da yanke ba.
Quilted sumul bututu da dama abũbuwan amfãni:
1, inganta yanayin ƙasa, roughness na iya isa zuwa Ra≤0.08µ m ko makamancin haka.
2, daidaitaccen zagaye, elpticity na iya zama ƙasa da 0.01mm.
3, inganta taurin saman, an kawar da lalatawar ƙarfi, taurin ƙara HV≥4 °
4, bayan sarrafa saura danniya Layer, inganta gajiya ƙarfi da 30%.
5, inganta ingancin dacewa, rage lalacewa, tsawaita rayuwar sabis na sassa, amma an rage farashin sarrafawa na sassa.
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Madaidaicin bututun ƙarfe
Gabatarwar samfur:
Madaidaicin bututu mai girman girman, babban madaidaicin, bututu ciki da waje gamawa, bayan zafin jiyya na bututun ƙarfe a ciki da waje ba su da fim ɗin oxide, bututun ƙarfe, flattening ba tare da fasa ba, lankwasawa mai sanyi ba tare da nakasawa ba, kuma yana iya tsayayya da babban matsa lamba. , na iya yin nau'ikan nakasawa mai rikitarwa da sarrafa zurfin injiniya.
Babban samar da karfe bututu brands: 10 #, 20 #, 35 #, 45 #, 40cr, 42crmo, 16mn, da dai sauransu
Bayanin samarwa:
Outer diamita na karfe bututu 12-159
Karfe bututu bango kauri na 2-30
Amfani na asali:
Daidaitaccen bututun ƙarfe yana amfani da ko'ina a cikin motoci, babura, motocin lantarki, petrochemical, wutar lantarki, jiragen ruwa, sararin samaniya, bearings, abubuwan pneumatic, matsakaici da ƙananan tukunyar tukunyar jirgi mara nauyi da bututun ƙarfe da sauran filayen, kuma ana iya amfani da su zuwa hannun sandar karfe, bearings , na'ura mai aiki da karfin ruwa, inji sarrafa da sauran filayen!
Tsarin samarwa:
Tsarin samar da madaidaicin bututun ƙarfe iri ɗaya ne da na bututun na yau da kullun, wato, akwai hanyar ƙwanƙwasa ta ƙarshe da jujjuyawar sanyi.
Madaidaicin karfe bututu tsari kwarara
Tube billet dumama - dubawa - fata - - - perforation, pickling passivation, nika - man shafawa bushe - sanyi birgima - zuwa - yanke kai - dubawa, ganewa, gama samfurin marufi
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10# Bututun Karfe mara kyau
Bayanin samarwa:
Outer diamita na karfe bututu 20-426
Karfe bututu bango kauri na 20-426
Abubuwan sinadaran:
● No. 10 sumul karfe bututu sinadaran abun da ke ciki:
Carbon C: 0.07 ~ 0.14 ″ silicon Si: 0.17 ~ 0.37 Manganese Mn: 0.35 ~ 0.65 Sulfur S: ≤0.04 Phosphorus P: ≤0.35 chromium Cr: ≤0.15 Nickel Ni: 25≤0 Copper0: 25≤0
Kayan inji:
Mechanical Properties na No. 10 sumul karfe bututu: Tensile ƙarfi σb (MPa): ≥410(42) Ƙarfin Haɓaka σs (MPa): ≥245 (25) elongation δ5 (%) : ≥25 raguwa sashi (%) , taurin: unheated, ≤156HB, samfurin size: 25mm.
High ingancin carbon tsarin karfe:
No. 10 sumul karfe bututu ba ya ƙunshi sauran gami abubuwa (sai sauran abubuwa) sai carbon (C) element da wani adadin silicon (Si) don deoxidation (gaba daya ba fiye da 0.40%), manganese (Mn) (gaba daya ba fiye da 0.80%, har zuwa 1.20%) abubuwan gami.
Irin wannan ƙarfe dole ne ya sami nau'in sinadarai da kayan aikin injiniya.Abubuwan da ke cikin sulfur (S) da phosphorus (P) gabaɗaya ana sarrafa su ƙasa da 0.035%.Idan ana sarrafa shi a ƙasa da 0.030%, ana kiransa ƙarfe mai inganci, kuma "A" yakamata a ƙara bayan sa, kamar 20A;Idan P yana ƙarƙashin 0.025% kuma S ana sarrafa shi a ƙasa da 0.020%, ana kiran shi ƙarin ƙarfe mai inganci, kuma "E" ya kamata a ƙara bayan sa don nuna bambanci.Don sauran abubuwan da suka rage da ake kawowa cikin ƙarfe ta albarkatun ƙasa, kamar chromium (Cr), nickel (Ni), jan ƙarfe (Cu), da sauransu, abun ciki na Cr≤0.25%, Ni≤0.30%, Cu≤0.25%.Wasu nau'ikan manganese (Mn) abun ciki har zuwa 1.40%, wanda aka sani da ƙarfe na manganese.
No. 10 m karfe bututu nauyi lissafin dabara:[( waje diamita - bango kauri)* bango kauri]*0.02466=kg/m (nauyin kowace mita)
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Q345B tube mara nauyi
Bayanin samarwa:
Outer diamita na karfe bututu 20-426
Karfe bututu bango kauri na 20-426
Babban halaye:
Good m inji Properties, weldability, sanyi, zafi aiki Properties da lalata juriya, tare da mai kyau low zafin jiki taurin.
Aikace-aikacen samfur:
Jirgin ruwa, tukunyar jirgi, tasoshin matsa lamba, tankunan ajiyar mai, gadoji, kayan aikin wutar lantarki, injin ɗagawa da sauran tsarin walda tare da manyan lodi
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35CrMo gami karfe bututu
Bayanin samarwa:
Outer diamita na karfe bututu 20-426
Karfe bututu bango kauri na 20-426
Gabatarwar samfur:
Misali, 40Cr.(Carbon abun ciki na 35CrMo gami karfe bututu ne 0.32 ~ 0.40, silicon 0.17 ~ 0.37, manganese 0.40 ~ 0.70, molybdenum 0.15 ~ 0.25, chromium 0.80 ~ 1.10)
② Babban abubuwan haɗakarwa a cikin ƙarfe, ban da wasu abubuwan microalloying, gabaɗaya ana bayyana su da kashi da yawa.Lokacin da matsakaicin abun ciki na gami bai wuce 1.5% ba, kawai alamar kashi gabaɗaya ana yiwa alama a cikin lambar ƙarfe, amma ba abun ciki ba.Duk da haka, a cikin lokuta na musamman, yana da sauƙi don rikicewa, lambar "1" za a iya yiwa alama bayan alamar kashi, kamar lambar karfe "12CrMoV" da "12Cr1MoV", abun ciki na chromium na tsohon shine 0.4-0.6%, kuma na karshen shine 0.9-1.2%.Komai daya ne.Lokacin da matsakaita abun ciki na alloying ≥1.5%, ≥2.5%, ≥3.5%……“, alamar kashi ya kamata a yiwa alama bayan abun ciki, ana iya bayyana shi azaman 2, 3, 4…… da sauransu. Misali, 18Cr2Ni4WA.
③ Alloy abubuwa kamar vanadium V, titanium Ti, aluminum AL, boron B da rare earth RE a cikin karfe suna cikin microalloying abubuwa.Kodayake abun ciki yana da ƙasa sosai, yakamata a yi musu alama akan lambar ƙarfe.Misali, a cikin karfe 20MnVB.Vanadium shine 0.07-0.12% kuma boron shine 0.001-0.005%.
④ "A" ya kamata a ƙara a ƙarshen lambar ƙarfe na ƙarfe mai daraja don bambanta shi daga babban ingancin karfe.
⑤ Manufa ta musamman gami da tsarin ƙarfe, ƙirar lambar karfe (ko kari) tana wakiltar manufar alamar karfe.Misali, karfe 30CrMnSi da aka yi amfani da shi musamman don rive skru ana bayyana shi azaman ML30CrMnSi.
Alloy tube da sumul tube duka suna da dangantaka da bambance-bambance, ba za a iya rude.
Alloy bututu ne karfe bututu daidai da samar da kayan (wato, abu) don ayyana, kamar yadda sunan ya nuna an yi da gami bututu;Kuma bututu maras nauyi shine bututun ƙarfe daidai da tsarin samarwa (marasa sumul) don ayyana, daban da bututun da ba shi da kyau shine welded bututu, gami da madaidaiciyar bututun welded bututu da karkace bututu.
Fasahar kere kere:
1. Hot mirgina (extrusion sumul karfe bututu): zagaye tube blank → dumama → perforating → uku-high diagonal rolling, ci gaba da mirgina ko extrusion → tsiri → girman (ko rage) → sanyaya → mikewa → hydrostatic gwajin (ko dubawa) → marking → ajiya
2. Sanyi-jawo (birgima) bututun ƙarfe maras sumul: zagaye bututu blank → dumama → perforation → take → annealing → pickling → oiling (copper plating) → Multi-pass sanyi zane (sanyi mirgina) → blank tube → zafi magani → mikewa → gwajin hydrostatic (bincike) → alama → ajiya
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30CrMo gami karfe bututu
Bayanin samarwa:
Outer diamita na karfe bututu 20-426
Karfe bututu bango kauri na 20-426
Gabatarwar samfur:
① Lambobin biyu a farkon lambar karfe suna nuna abun ciki na carbon na karfe, tare da matsakaicin adadin carbon na 'yan dubu, kamar 40Cr, 30CrMo gami da bututun ƙarfe.
② Babban abubuwan haɗakarwa a cikin ƙarfe, ban da wasu abubuwan microalloying, gabaɗaya ana bayyana su da kashi da yawa.Lokacin da matsakaicin abun ciki na gami bai wuce 1.5% ba, kawai alamar kashi gabaɗaya ana yiwa alama a cikin lambar ƙarfe, amma ba abun ciki ba.Duk da haka, a cikin lokuta na musamman, yana da sauƙi don rikicewa, lambar "1" za a iya yiwa alama bayan alamar kashi, kamar lambar karfe "12CrMoV" da "12Cr1MoV", abun ciki na chromium na tsohon shine 0.4-0.6%, kuma na karshen shine 0.9-1.2%.Komai daya ne.Lokacin da matsakaita abun ciki na alloying ≥1.5%, ≥2.5%, ≥3.5%……“, alamar kashi ya kamata a yiwa alama bayan abun ciki, ana iya bayyana shi azaman 2, 3, 4…… da sauransu. Misali, 18Cr2Ni4WA.
③ Alloy abubuwa kamar vanadium V, titanium Ti, aluminum AL, boron B da rare earth RE a cikin karfe suna cikin microalloying abubuwa.Kodayake abun ciki yana da ƙasa sosai, yakamata a yi musu alama akan lambar ƙarfe.Misali, a cikin karfe 20MnVB.Vanadium shine 0.07-0.12% kuma boron shine 0.001-0.005%.
④ "A" ya kamata a ƙara a ƙarshen lambar ƙarfe na ƙarfe mai daraja don bambanta shi daga babban ingancin karfe.
⑤ Manufa ta musamman gami da tsarin ƙarfe, ƙirar lambar karfe (ko kari) tana wakiltar manufar alamar karfe.Misali, karfe 30CrMnSi da aka yi amfani da shi musamman don rive skru ana bayyana shi azaman ML30CrMnSi.
Fasahar kere kere:
1. Hot mirgina (extrusion sumul karfe bututu): zagaye tube blank → dumama → perforating → uku-high diagonal rolling, ci gaba da mirgina ko extrusion → tsiri → girman (ko rage) → sanyaya → mikewa → hydrostatic gwajin (ko dubawa) → marking → ajiya
2. Sanyi-jawo (birgima) bututun ƙarfe maras sumul: zagaye bututu blank → dumama → perforation → take → annealing → pickling → oiling (copper plating) → Multi-pass sanyi zane (sanyi mirgina) → blank tube → zafi magani → mikewa → gwajin hydrostatic (bincike) → alama → ajiya
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42crmo sumul karfe bututu
Bayanin samarwa:
Outer diamita na karfe bututu 20-426
Karfe bututu bango kauri na 20-426
Gabatarwar samfur:
Manufar 42crmo sumul karfe bututu: musamman karfe ga gada ne "42crmo", da musamman karfe ga mota girder ne "42CRmo", da musamman karfe jirgin ruwa jirgin ruwa ne "42Crmo".Irin wannan ƙarfe shine dogara ga daidaitawar abun ciki na carbon (C) don inganta kayan aikin injiniya na karfe, sabili da haka, bisa ga abun ciki na carbon na babba da ƙananan, irin wannan karfe za a iya raba zuwa: ƙananan ƙarfe na carbon - carbon. abun ciki gabaɗaya ƙasa da 0.25%, kamar 10, 20 karfe, da sauransu;Matsakaici carbon karfe - carbon abun ciki ne kullum tsakanin 0.25 ~ 0.60%, kamar 35, 45 karfe, da dai sauransu High carbon karfe - carbon abun ciki kullum fi 0.60%.Ba a saba amfani da irin wannan ƙarfe don yin bututun ƙarfe ba.
Ƙayyadaddun tsari:
Bayanin aiki mai zafi
Zazzabi mai zafi 1150 ~ 1200 ° C, farawa zafin jiki 1130 ~ 1180 ° C, zazzabi na ƙarshe> 850 ° C, φ> 50mm, jinkirin sanyaya.
Daidaita ƙayyadaddun ƙayyadaddun bayanai
Normalizing zafin jiki 850 ~ 900 ° C, daga cikin tanda iska sanyi.
Ƙayyadaddun yanayin zafi mai girma
Zazzabi zafin jiki 680 ~ 700 ° C, daga cikin tanda iska sanyi.
Ƙayyadewa don quenching da tempering
Preheating zafin jiki 680 ~ 700 ° C, quenching zafin jiki 840 ~ 880 ° C, mai sanyaya, tempering zazzabi 580 ° C, ruwa sanyaya ko man sanyaya, taurin ≤217HBW.
Ƙayyadaddun ƙayyadaddun ƙaƙƙarfan ƙarfi da ƙarfi a ƙarƙashin - kashe zafin jiki
Quenching zafin jiki 900°C, zafin jiki 560°C, taurin (37±1) HRC
Ƙayyadaddun ƙayyadaddun ƙaddamarwa don hardening induction da tempering
Quenching zafin jiki 900 ° C, tempering zafin jiki 150 ~ 180 ° C, taurin 54 ~ 60HRC.
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45# Bututun Karfe mara kyau
Bayanin samarwa:
Outer diamita na karfe bututu 20-426
Karfe bututu bango kauri na 20-426
Gabatarwar samfur:
Danyen abu na bututun da ba shi da sumul shine zagaye bututun billet, ana yanke amfrayo mai zagaye kuma ana sarrafa shi ta hanyar yankan injin tare da girma na kusan mita 1 babu komai, sannan a aika zuwa tanderun ta hanyar dumama bel.Ana ciyar da billet ɗin a cikin tanderun wuta kuma a yi zafi zuwa kusan digiri 1200 na ma'aunin Celsius.Man fetur shine hydrogen ko acetylene.Matsalolin zafin jiki a cikin tanderun shine babbar matsala.Bayan billet ɗin zagaye na zagaye ya fito, ana huɗa shi da naushin matsi.Gabaɗaya, mafi yawan mai yin ɓarna shine mai jujjuyawar juzu'i.Irin wannan perforator yana da ingantaccen samarwa, ingancin samfur mai kyau, manyan diamita na perfoating kuma yana iya sa nau'ikan ƙarfe iri-iri.Bayan huda, billet ɗin zagaye na billet ɗin ana birgima da shi ta hanyar babban diagonal uku, ci gaba da birgima ko extrusion.Bayan extrusion, ya kamata a cire bututu don girman girman.Caliper yana jujjuya cikin amfrayo na ƙarfe ta hanyar rawar daɗaɗɗen maɗauri a babban gudun don huɗa ramuka da samar da bututun ƙarfe.Diamita na ciki na bututun ƙarfe an ƙaddara ta tsayin diamita na waje na diamita na rawar soja.Bayan girman bututun karfe, yana shiga hasumiya mai sanyaya kuma ana sanyaya shi ta hanyar fesa ruwa.Bayan sanyaya bututun ƙarfe, za a daidaita shi.Bayan an daidaita, ana aika bututun karfe ta hanyar bel mai ɗaukar nauyi zuwa injin binciken ƙarfe (ko gwajin ruwa) don dubawa na ciki.Idan akwai tsagewa, kumfa da sauran matsaloli a cikin bututun karfe, za a gano shi.Karfe ingancin dubawa bayan m hannun zaɓi.Bayan an duba bututun ƙarfe, ana fesa lamba, ƙayyadaddun bayanai da adadin adadin samar da fenti.Kuma da crane a cikin sito.
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40cr bututu mara nauyi
Bayanin samarwa:
Outer diamita na karfe bututu 20-426
Karfe bututu bango kauri na 20-426
Daidaitaccen bututun ƙarfe:
Bisa ga ma'auni GB/T 3077-2008: sinadaran abun da ke ciki (mass juzu'i,%) C 0.37 ~ 0.44, Si 0.17 ~ 0.37, Mn 0.50 ~ 0.80, Cr0.80 ~ 1.10, Ni≤0.30.【 Kayan aikin injiniya】
Samfura mara girman (mm): 25
Maganin zafi:
Na farko quenching dumama zafin jiki (℃): 850;Coolant: mai
Na biyu quenching dumama zafin jiki (℃): -
Tempering dumama zafin jiki (℃): 520;Coolant: ruwa, mai
Ƙarfin ƙarfi (σb/MPa): ≧980
Matsayin Haɓakawa (σs/MPa): ≧785
Tsawaitawa bayan karya (δ5/%): ≧9
Rage ƙimar giciye (ψ/%): ≧45
Ayyukan shayar da tasiri (Aku2/J): ≧47
Brinell taurin (HBS100/3000) (annealing ko high-zazzabi yanayin zafi): ≦207
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20# Bututun Karfe mara kyau
Bayanin samarwa:
Outer diamita na karfe bututu 20-426
Karfe bututu bango kauri na 20-426
An yi bututun karfe 20# maras sumul da karfe 20#, tare da karfin dan kadan sama da 15#, ba kasafai ake kashewa ba kuma babu tsautsayi.Cold nakasawa filastik yana da girma, gabaɗaya don lankwasawa, calending, lankwasawa da sarrafa guduma, aikin walda na walda na baka da walƙiya mai lamba yana da kyau, kauri na walda gas ƙarami ne, siffar tsananin buƙatu ko hadaddun sifar aikin yana da sauƙin fashe. .Machinability sanyi zane ko daidaita yanayin ya fi jihar annealing, gabaɗaya ana amfani dashi don kera ƙarancin damuwa da ƙaƙƙarfan buƙatun aikin aikin.
Kayan bututun karfe 20# maras sumul shine: babban ingancin tsarin karfen carbon
Alamar lamba: 20#
Misali: GB8162-2018
GB/T8163-2018
GB3087-2008
GB9948-2013
GB5310-2017
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3087 low matsa lamba tukunyar jirgi tube
Bututun ƙarfe mara nauyi wani nau'in ƙarfe ne mai zagaye, murabba'i da rectangular tare da sashe mara kyau kuma babu haɗin gwiwa a kusa da bututun ƙarfe mara nauyi da aka yi da ƙarfe mai ƙarfi ko bututu mara ƙarfi ta hanyar huɗa, sannan kuma birgima mai zafi, birgima ko sanyi mai jan ƙarfe mara ƙarfi yana da sashin kulawa na tsakiya kuma ana amfani dashi sosai azaman bututun isar da ruwa.Idan aka kwatanta da ƙaƙƙarfan ƙarfe kamar zagaye na ƙarfe, bututun ƙarfe yana da lanƙwasa iri ɗaya da ƙarfi kuma yana da haske.Sashe ne na tattalin arziki karfe.Ana amfani da shi sosai a cikin kera sassan sassa da sassa na inji, kamar bututun mai rawar soja, bututun watsa mota, firam ɗin keke da bututun ƙarfe da ake amfani da su a cikin gini.
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Babban diamita lokacin farin ciki bango mara ƙarfi gami karfe bututu
Bututun ƙarfe mara nauyi wani nau'in ƙarfe ne mai zagaye, murabba'i da rectangular tare da sashe mara kyau kuma babu haɗin gwiwa a kusa da bututun ƙarfe mara nauyi da aka yi da ƙarfe mai ƙarfi ko bututu mara ƙarfi ta hanyar huɗa, sannan kuma birgima mai zafi, birgima ko sanyi mai jan ƙarfe mara ƙarfi yana da sashin kulawa na tsakiya kuma ana amfani dashi sosai azaman bututun isar da ruwa.Idan aka kwatanta da ƙaƙƙarfan ƙarfe kamar zagaye na ƙarfe, bututun ƙarfe yana da lanƙwasa iri ɗaya da ƙarfi kuma yana da haske.Sashe ne na tattalin arziki karfe.Ana amfani da shi sosai a cikin kera sassan sassa da sassa na inji, kamar bututun mai rawar soja, bututun watsa mota, firam ɗin keke da bututun ƙarfe da ake amfani da su a cikin gini.
