Bar rond (Bar rond) ye

Barre rond (bara rond en acier) .ye anɛgɛ silinda solide fɛn dilannenbɛ dilan janya tilennenw na, min ɲɛfɔlen don kosɛbɛ a fɛcɛmancɛ la(misali la, Ø12 mm) ani jiginni cogoya (hot-rolled, normalized, or quenched & tempered). A tɛ i n’a fɔ pipe walima tube, a yebore dingɛ tɛ yen-a bɛ kɛ i n'a fɔ stock raw formasinw dilanni, foroko ani fɛn dilannika jirisunw, piniw, bololanɛgɛw, ɲɔgɔndanw, ani jɔli/masin yɔrɔw dilan.

Octal Pipe bɛ nɛgɛ ni nɛgɛ kɛrɛnkɛrɛnnenw dilanbara lamininenwmin bɛ dilan Sinuwa kɛrɛnkɛrɛnnen-nɛgɛsobaw fɛ, u cɛmancɛw bɛ bɔmilimɛtɛrɛ 5 fo ka se milimɛtɛrɛ 360 ma, min bɛ di ni funteni-kurulen, normalize, walima quenched-ani-tempered cogoya ye. O bara ninnu dabɔra kiliyanw kama minnu bɛ masinw dilanni, foroko, ani yɔrɔw dilanni kɛ seko ni dɔnko siratigɛ la i n’a fɔ fanga, minɛnko, kɔgɔjida la, mɔbiliko ani masinw bɛɛ lajɛlen.

Misali (MTC-dɛmɛnen):Mansin seere min bɛ duguma (Ø27 mm × 6 m, 35.916 t total) bɛ micro-alloyed round bar steel chemistry ni masin hakɛ danma jira min bɛ kɛ ka yɔrɔw ɲini. chimie : 0,33–0,34% C ɲɔgɔn, P dɔgɔya ( A ka dɔgɔn walima a bɛ bɛn 0,017% ma) ani S dɔgɔya ( A ka dɔgɔ walima a bɛ bɛn 0,004% ma), ka fara micro-alloying elements V, Ti ani B kan. O faralen ɲɔgɔn kan b’a fɔ an ye ko nin yeayia basigilen jɔli nɛgɛ, nka asanfɛ-fanga, suman finman-sɛnɛ, mikro-bari min bɛ kɛ ni nɛgɛ yea dabɔra yɔrɔw kama minnu mago bɛ fanga (≈950 MPa tensile) ni bɔgɔdaga gɛlɛya fila bɛɛ la –20℃. Nin ɲɔgɔnna baraw ka ɲi kosɛbɛ i n’a fɔ stock raw for bolts, shafts, pins, drivetrain parts, drilling ani mining components.

Baro bɛɛ bɛ se ka dilan nitraceability dafalen(funteni hakɛ, kemikaliya, sɔgɔsɔgɔninjɛ sɛgɛsɛgɛli, sɔgɔsɔgɔninjɛ sɛgɛsɛgɛli, kuru/kurunba ani gɛlɛya) ka kɛɲɛ ni EN 10204 3.1/3.2 ye.

Ka ɲɛsin sannifeere sɛbɛn surun ma, .bara bulama 12mmye atelier hakɛ ye min bɛ kɛ tuma caman na jirisun misɛnninw, pinɛw, ani brackets, k’a sɔrɔbara lamininen R6bɛ kɛ tuma caman na yɔrɔw lisi kan walasa ka kɔrɔØ6 mm ye bara bulama ye(ja dɔw bɛ "R" kɛ i n'a fɔ radius-o la, i k'a Jira ko R6 kɔrɔ ye Ø6 ye walima radius 6).

Baro bulama hakɛ minnu bɛ kɛ tuma caman na (mm) minnu bɛ kɛ masinw dilanni na & yɔrɔ dilanni na:

I ye MTC min ci (Heat No. 0242306413 / 0242306412, dia. 27 mm × 6 m), o chimie bɛ fɔ nin cogo in na:

O bɛ min fɔ an ye

Karɔbɔli min bɛ 0,33–0,34% lamini na, o bɛ fanga ni gɛlɛya balansi ɲuman di QT kɔfɛ.

P ni S ka dɔgɔ kosɛbɛ ( A ka dɔgɔ walima a bɛ bɛn 0,017% ma ani a ka dɔgɔ walima a bɛ bɛn 0,004% ma), o ye nɛgɛbere kɛrɛnkɛrɛnnenw-taama ye masin yɔrɔw la.

V, Ti ani B bɛ yen ka jɛya - nin tɛ nɛgɛ nɔgɔlen basigilen ye, nka a ye micro-alloyed walima HS (high-strength) bar ye min laɲini ye ka masinko jogo caman sɔrɔ ani ka gɛlɛya ɲuman sɔrɔ.

Kɔlɔsili min bɛ MTC kan, o b’a jira ko...CEV ka foroko:
CEV=C + Mn/6 + (Cr+V+Mo)/5 + (Cu+Ni)/15
min ye fɛɛrɛ ye min bɛ kɛ ka weldacogo ni nɛnɛ{0}}kari farati kunbɛn. Nin ye kunnafoni ɲuman ye min ka kan ka mara ɲɛ kan bawo a bɛ taamasiyɛn di ɛntɛrinɛti injiniyɛriw ma ani Google ma ko nin ye mansin data lakikaw ye.

Tile-don{1}}don sannifeere la,bara lamininen vs berea ka c’a la, adilan-cogo ani sɔnnidanfara sanni ka kɛ danfara ye chimie la.Bar rond (bara lamininen).a ka c’a la, o kɔrɔ ye ko tilennen-janya, barajuru jɔlen stock min bɛ dilan masin ni foroko kama, yɔrɔ mindiamètre muɲuni, a tilennenya, ani a sanfɛla cogoyaa bɛ nɔ bila cycle waati ni scrap rate la k’a ɲɛsin a yɛrɛ ma. " " .Kala" bɛ kɛ ka caya ka nɔgɔya ka tɛmɛn cɛmancɛ fitininw kan ani, ka kɛɲɛ ni izini ye, a bɛ se ka tali kɛbobine-dumuni fili-berew cogoyaw(a dabɔra ka nɛgɛ siraw ja, ka u kɔrɔta, walima ka u siri) sanni ka tigɛ-janya bara.

U faranfasicogo ɲuman ye ka fɛnw lajɛ minnu nafa ka bon sɔrɔli la:

• Ni aw mago bɛ a latigɛ-ka-janya yɔrɔ jɛlenw tigɛli/sɔrɔ, a ka c'a la, i bɛ sanni kɛbara lamininen-i b'i janto o latilennenya, decarb, surface defectes, ani diamètre basigileno la, yɔrɔ masinw ka saniya.
• Ni aw ka fɛɛrɛ nata yeja/cogo(filɛri fɛnw, resɔrɔnw, sirilan nɛgɛ, bobine- balo baarakɛcogo), "kala" ye daɲɛ ye min bɛ fɔ tuma caman na, wa sinsin bɛ wuli ka taabobine cogoya, surface scale control, ani drawability.

Sannikɛla ka kan min bɛ fɔ cogoya la (a bɛ dɛmɛ don ka PO ka daɲɛ fila-fila bali):

• K'a nafa bɔ a la"bara bulama".ni i ka BOM bɛ makɔnɔni kɛØ bonya + janya(misali la, Ø20 × 6 m) ani i ka jiginɛ taabolo ye masin/forging ye.
• K'a nafa bɔ a la"bere / nɛgɛbere".ni i ka BOM bɛ makɔnɔni kɛbobine/weight-based supplyani jiginɛ taabolo ye ja walima foroko ye.

Sanni ladilikan nafama:cibara lamininenni aw mago bɛ masinw na minnu bɛ se ka fɔ ka ɲɛ ani tilennenya sabatilen; baara kɛ ni "rod" daɲɛw ye dɔrɔn ni i ka taabolo ye coil-fed ja, bending, walima wire-based forming ye.

Walasa ka ɲɛ in kɛ i n’a fɔ fanga bɛ a la, o bɛ dɛmɛ ka taabolo yɛrɛ jira. Sira danma dɔ min bɛ kɛ nin barika lamininenw fanga ka bon-la, o ye nin ye:

a) Nɛgɛ dilanni ni nɛgɛdacogo filanan
Nɛgɛ bɛ wuli BOF walima EAF la, o kɔfɛ, a bɛ furakɛ LF/VD la walasa ka kisɛ ni fosiporozɛni bɔ ani ka nɛgɛ hakɛ ladilan tigitigi. O yɔrɔ de la, mikro-fɛnw bɛ fara ɲɔgɔn kan i n’a fɔ V, Ti ani B. P ni S dɔgɔyali i ka MTC kɔnɔ (0,015–0,017% P, 0,003–0,004% S) ye nin sen in nɔ ye tigitigi - u bɛ gɛlɛya ni weldacogo ɲɛ.

b) Casting ni billet labɛnni
Nɛgɛ min saniyalen don, o bɛ fili ka kɛ billetw ye minnu bɛnnen don ka kɛ bara lamininen wulilen ye. Billet saniyalenw minnu kɔnɔfɛnw ka dɔgɔn, olu nafa ka bon walasa ka tɛmɛ bend/rebend ani impact tests kan minnu bɛ sɔrɔ i ka seere kan.

c) Baro bulama wulicogo funteni
Bilɛtiw bɛ sumaya kokura ka u wuli bara mansinw kan fo ka se u cɛmancɛ laban ma (misali la, milimɛtɛrɛ 27). Rolling bɛ kɔlɔsi walasa ka surface quality ɲuman sɔrɔ, ka tilennen ani dimension muɲuni. Baro bɛ tigɛ ka kɛɲɛ ni jago janya ye, a ka c’a la, mɛtɛrɛ 6.

d) Funteni furakɛli (ka normalize walima quenching + tempering) .
Walasa ka se masinko cogoyaw ma minnu jiralen bɛ seere kan - tensile 950–960 MPa, sɔrɔ 905–915 MPa ɲɔgɔn, impact energy at –20℃around 100–110 J - baraw tɛ to "as hot rolled U bɛ normalize walima, a ka ca a la, o fanga hakɛ in na, .a fagalen don ani a bɛ sɔgɔsɔgɔ (Q&T) ..

Fɛnɲɛnɛmafagalanw (quenching).bɛ martensitic/bainitic structure gɛlɛn di.

Tempering (daminɛ) kɛlini funteni hakɛ bɛnnen don, o bɛ ductility segin, ka impact toughness kɔrɔta, ka microstructure sabati.
O sen in de bɛ fanga kɛ ka caya nka hali bi a bɛ janya to 13–14% ɲɔgɔn na ani ka yɔrɔ dɔgɔyali to 50% sanfɛ.

e) Tilenni, tigɛcogo ani taamasiyɛn kɛli
Funteni furakɛli kɔfɛ, barajuru bɛ ​​tilennen, ka tigɛ ka se mɛtɛrɛ 6 ma (walima janya wɛrɛw labɛnna), ka u fara ɲɔgɔn kan ka taamasiyɛn kɛ ni funteni nimɔrɔw ye.

f) Kɔrɔbɔli ni seereyaw
A dilabaga bɛ kemikɛli sɛgɛsɛgɛli kɛ, ka sɛgɛsɛgɛli kɛ sɔgɔsɔgɔninjɛ kan, ka sɛgɛsɛgɛli kɛ ni bɔgɔdaga ye –20℃la , ka sɛgɛsɛgɛli kɛ bend/rebend kan, ka forging test ani hardness check - i bɛ kulu minnu bɛɛ ye MTC kan. Ni u bɛɛ "qualifié" dɔrɔn de bɛ baraw Bɔ. O bɛ sannikɛlaw dalen to a la ko bɔrɔ bɛɛ bɛ bɛn masin hakɛ ma.

Bar rond steel gɛlɛya fanba tɛ jira quotation sheet kan-u bɛ jiratour kan, funteni furakɛli kɔfɛ, walima ɲɔgɔn lajɛ waati. Porozɛ minnu bɛ baara kɛ ni barika ye min bɛ fanga caman sɔrɔ / mikro-alloyed bar la, Octal Pipe bɛ sinsin jogoɲumanya yɔrɔw kan minnu b’a latigɛ ni bara bɛ kɛ yɔrɔ sabatilen ye walima ni baara seginni fɛn sɔngɔ gɛlɛn ye:

Tiɲɛ na, o bɛ "bara round size + grade" wuli ka kɛ a yebaarakɛminɛnw dilanni donta: bara bɛ se ni cogoya ɲɛfɔlen ye, masin kɛcogo min bɛ se ka fɔ ka ɲɛ, ani bɔli basigi min bɛ bɛn yɔrɔw bɛ sɔn cogo min na tiɲɛ na. Octal Pipe bɛ se ka dɛmɛ don lot-based traceability (funteni hakɛ → sɛgɛsɛgɛli jaabiw) o la sɛgɛsɛgɛli sɔrɔli ni jiginɛ masinw ka setigiya bɛ taa teliya la ni sampling cycles wɛrɛw ma kɛ.

Sabula o fɛn in bɛ fara ɲɔgɔn kanfanga ka bon (≈950 MPa) ., sɛgɛsɛgɛli kɛcogo ɲuman (A ≈ 13–14%) .ania ka ɲi kosɛbɛ funteni dɔgɔya-funteni nɔfɛ fanga (100–110 J lamini na –20 degere ) ., a bɛ se ka kɛ yɔrɔ caman na minnu bɛ ɲini :

Minɛn, tunɛri ani dugukolo{0}}dɛmɛ yɔrɔw
Farakurunw, jɔlanw, jirisunw ani yɔrɔ wɛrɛw minnu ka kan ka baara kɛ nɛnɛ walima bɔgɔdaga-doni cogoyaw la. Sɛnɛfɛn caman sɔrɔli (≈910 MPa) ani a nɔfɛta nafa ɲuman bɛ bara in kɛ lakana ye sɔgɔsɔgɔ doni kɔrɔ.

Petroli & gazi ani kɔgɔjida la minɛnw
Yɔrɔw, flansɛw, hubuw, jirisunw ani brackets sirili yɔrɔ minnu na funteni dɔgɔya-gɛlɛya wajibiyalen don (–20℃walima a dɔgɔyalen). P/S hakɛ dɔgɔyali ani sɛgɛsɛgɛli sɛbɛnnenw b’a to sɔnni ka nɔgɔn kɔgɔjida la ani kɔgɔjida la porozɛw la.

Masina ni fanga-minɛnw yɔrɔw
Shafts, axles, pins, gears (masin kɛlen kɔfɛ walima u sanfɛla gɛlɛyali kɔfɛ), masinw karamɔgɔ ani transmission yɔrɔw minnu mago bɛ fanga la ka tɛmɛ carbone nɛgɛ gansan kan.

Nɛgɛso ni mɔbili girinman-fɛnw yɔrɔw
Yɔrɔ minnu na chimie basigilen, traceability ani weldability (CEV contrôlé) ka kan ka kɛ yɔrɔ minnu na.

Forging stock ani masin bar
Ikomi chimie saniyalen don ani a jɔcogo ka ɲi, bara ye basigi ɲuman ye die foroko dagalenw-di forow walima masin yɔrɔw kama. Kunnafonidila bɛ se ka foroko kɛ ka cogoya sɔrɔ ani ka to ka masin nivo mara re-tempering kɔfɛ.

Porozɛ minnu bɛ kɛ nɛnɛ maraw la
Kɔnɔnafili fanga min sɛgɛsɛgɛra degɛrɛ –20 na MTC kan, o b’a jira ko nin bara ninnu bɛ se ka kɛ woroduguyanfan / funteni dɔgɔman-yɔrɔw la k’a sɔrɔ u ma tiɲɛ.

Bar rond en acier inoxydable

Ni sɔgɔsɔgɔninjɛ-yɔrɔ minnu bɛ kɛnɛ kan, porozew bɛ se ka ɲɛfɔli kɛnɛgɛ min tɛ sɔgɔ, o ye bara bulama yesanni a ka kɛ karɔbɔni/alloy yenɛgɛbere bulama-a ka c’a la ni ko furaw, kɔgɔjida la nɛnɛ, walima kulori-fɛnw bɛ minnu na, olu bɛ kɛ sababu ye ka datugulan-basigi lakanani kɛ fɛn ye min tɛ se ka da a kan. Octal Pipe bɛ se ka quotation stainless round bar items kɛrɛfɛ alloy bar packages walasa sannikɛlaw ka se ka sɛbɛn kelen mara ani ka cikan kelen mara. Sugandili minnu bɛ kɛ ni sɔgɔsɔgɔninjɛ ye, olu ye 304/304L ye walasa ka sɔgɔsɔgɔninjɛ caman kunbɛn ani 316/316L yɔrɔ minnu na kuloridi pitting margin ka kan ka kɛ.

Aw ye ɲɔgɔn sɔrɔ sisan

Ɲininkaliw

 

 

Danfara jumɛn bɛ bara bulama funteni-kurulen, sɔgɔlen, ani nɛnɛ{1}}jalen cɛ?

Hot-rolled ye sɔrɔko stock ye;a ɲɛw bɔraa bɛ surface/diameter ɲɔgɔndan ɲɛ ka ɲɛsin masinw dilanni ma;nɛnɛ-jabɛ muɲuli ni tilennenya gɛlɛya yɔrɔ tigitigiw kama.

Yala ne ka kan ka komandi kɛ bara rond na normalisé walima quenched & tempered (Q&T) cogo la wa?

K'a nafa bɔ a lanormalisé (normalisé) yeka ɲɛsin masin/forging dondaw sabatilenw ma; k'a nafa bɔ a laQ&Tni yɔrɔ mago bɛ fanga/gɛlɛya hakɛ ɲɛfɔlen na ani gɛlɛya kɔrɔsilen na funteni furakɛli kɔfɛ.

Ne ka kan ka muɲuli jumɛn jira bara bulama la min bɛ kɛ masin na?

Ni ja m’a fɔ, aw bɛ cɛmancɛ muɲuli kalasi ni tilennenya wajibiyalen dɔ fɔ (ani ni yɔrɔ min dilannen don ni masin/bɔlen ye) walasa ka i yɛrɛ tanga fit-up ani jiginni hakɛ wɛrɛ ma yɔrɔ la.

Yala ne mago bɛ ultrasonic testing (UT) la ka ɲɛsin nɛgɛbere bulama ma wa?

UT bɛ ɲɛfɔ cogoya la shafts/forging stock kɔrɔlenw kama yɔrɔ minnu na kɔnɔna mankan nafa ka bon; a bɛ dɛmɛ ka dɔ bɔ kɔfɛ-taamasenɲɛ sɛgɛnw na ni fiɲɛw sɔrɔla masinko kɔfɛ.

Sɛbɛnw (certifications) minnu bɛ sɔrɔ

 

CE ka Seereyaw

ISO 9001 ka seereyaw

API Q1 Seereyaw

ABS ka Seereyaw

AP-5L ka seereyaw

API-5CT ka seereyaw

 

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