Bar Poe

Paʻa pōʻai (paʻa kila pōʻai)he ahuahana kila cylindrical paʻahāʻawi ʻia i nā lōʻihi pololei, i wehewehe nui ʻia e konaanawaena(e laʻa, Ø12 mm) a me ke ʻano o ka hāʻawi ʻana (wela -rolled, maʻamau, a i ʻole ke kinai ʻia a me ka huhū). ʻAʻole like me ka paipu a i ʻole ka paipu, loaʻaʻaʻohe puka lua-hoʻohana ʻia ma ke ʻano he kumu waiwai noka mīkini, ka hana ʻana, a me ka hana ʻanae hana i nā lāʻau, nā pine, nā bolts, nā hoʻopili, a me nā ʻāpana hana/mechanical.

 

Hāʻawi ʻo Octal Pipe i ka alloy a me ke kila kūikawāmau kaola poepoehana ʻia e nā wili kila kūikawā -kāne nui, ma nā anawaena mai5 mm a hiki i 360 mm, hā'awi 'ia ma ke 'ano -wela, ma'amau, a i kinai 'ia-a-ma'amau. Hoʻolālā ʻia kēia mau pahu no nā mea kūʻai aku e hana ana i ka mīkini, forging, a me ka hana ʻāpana i nā ʻāpana e like me ka ikehu, mining, offshore, transport a me nā mīkini maʻamau.

Laʻana (MTC-backed):Hōʻike ka palapala wili ma lalo nei (Ø27 mm × 6 m, 35.916 t ka nui) i kahi micro{3}}alloyed poepoe kila kila a me ka pae mechanical i hoʻohana ʻia no nā ʻāpana koi. kemika: ma kahi o 0.33–0.34% C, ha'aha'a P (emi a like paha me 0.017%) a me S ha'aha'a (emi a like paha me 0.004%), me ka micro-alloying element V, Ti a me B. Ke hoike mai nei kela hui ia kakou keia.ʻaʻolehe kila hana kumu, akā hekiʻekiʻe-ikaika, huaʻai-iki, micro-pāi manaʻo ʻia no nā ʻāpana e pono ai ka ikaika ʻelua (≈950 MPa tensile) a me ka paʻakikī paʻakikī ma -20 degere. ʻO nā pahu e like me kēia he mea kūpono e like me ke kumu waiwai no nā bolts, shafts, pins, drivetrain parts, drilling and mining parts.

 

Hiki ke hoʻolako ʻia nā pā a pauhiki ke huli piha(helu wela, haku mele, ho'āʻo tensile, ho'āʻo hopena, piko/kūpono a me ka paʻakikī) e like me EN 10204 3.1/3.2.

 

 

 

 

ʻAno huahana	Laulā nui
-paa poepoe wela	5 – 360 mm
pā pālahalaha	50 - 810 mm ka laulā, 6 - 160 mm ka mānoanoa
Paha huinaha	150 mm, 200 mm, 250 mm, 280 mm

 

No ke kūʻai ʻana i ka pōkole,pahu poepoe 12mmhe nui hale hana maʻamau no nā kumu liʻiliʻi, nā pine, a me nā pale, ʻoiaipahu poepoe R6hoʻohana pinepine ʻia ma nā papa inoa o ka pūnaeweleØ6 mm pahu poepoe(Hoʻohana kekahi mau kiʻi i ka "R" ma ke ʻano he radius-no laila e hōʻoia inā ʻo R6 ke ʻano o Ø6 a i ʻole radius 6).

 

ʻO ka nui o ka pahu pōʻai maʻamau (mm) i hoʻohana ʻia i ka mīkini a me ka hana pūnaewele:

 

Ka nui o ka pahu poepoe (mm)	Hoʻohana maʻamau ma ka pūnaewele (hana maoli)
6 (R6) / 8 / 10	Nā pine liʻiliʻi, nā mea heleuma, nā pale māmā, nā ʻāpana jig
12 (ka pahu poepoe 12mm) / 16 / 20	ʻO nā kumu maʻamau, nā lima lima, nā mea hoʻololi, nā ʻāpana hoʻoponopono
25 / 30 / 40	ʻO nā hui, nā ʻāpana hoʻokele, nā hub mīkini
50 / 60 / 80	Nā mākia koʻikoʻi-, nā ʻāpana lole eli, nā hakahaka hana ʻia
100+	ʻO ka waihona mīkini nui, nā ʻāpana hana maʻamau

 

 

 

Mai ka MTC āu i hoʻouna ai (Heat No. 0242306413 / 0242306412, dia. 27 mm × 6 m), ua hōʻike ʻia ke kemika penei:

 

ʻElemu	Hoao 1	Hoao 2	Unit / ʻōlelo
C	0.33	0.34	% (x100 → 33 / 34)
ʻO Si	0.28	0.26	%
ʻO Mn	0.68	0.57	%
P	0.015	0.017	% (P haʻahaʻa loa, ʻoʻoleʻa maikaʻi)
S	0.003	0.004	% (S haʻahaʻa loa, hoʻomaʻemaʻe maikaʻi)
Cr	0.018	0.021	% (micro Cr)
Cu	0.009	0.005	%
V	0.063	0.066	% (micro-alloying no ka hooikaika ana)
ʻO Ti	0.042	0.043	% (ka hoʻomaʻemaʻe palaoa)
B	0.0030	0.0030	% (ka hoʻoikaika paʻakikī)

 

He aha kēia e haʻi mai ai iā mākou

Hāʻawi ke kalapona ma kahi o 0.33–0.34% i ke kaulike maikaʻi o ka ikaika a me ka paʻakikī ma hope o QT.

He haʻahaʻa loa ka P a me S ( ʻOi aʻe a like paha me 0.017% a ʻO ka liʻiliʻi a i ʻole like me 0.004%), ʻo ia ka mea maʻamau o nā -pa kila kūikawā no nā ʻāpana mechanical.

ʻO V, Ti a me B ʻike maopopo ʻia - ʻaʻole kēia he kila māmā maʻamau, akā ʻo ka pahu micro-alloyed a i ʻole HS (kiʻekiʻe-ikaika) e pili ana i nā waiwai mechanical kiʻekiʻe a me ka paʻakikī maikaʻi.

Hōʻike ka memo ma ka MTC i kaʻĀpana CEV:
CEV=C + Mn/6 + (Cr+V+Mo)/5 + (Cu+Ni)/15
ʻo ia ke ala maʻamau e hoʻomalu ai i ka welded a me ke anu -pilikia nahā. He ʻike maikaʻi kēia e mālama ʻia ma ka ʻaoʻao no ka mea e hōʻailona ana i nā ʻenekinia a me Google he ʻikepili wili maoli kēia.

 

 

I kēlā me kēia lā -i{1}}kūʻai,pahu poepoe vs kookooʻo ka maʻamau ahoʻolako -palapala a ʻaeʻokoʻa ma mua o ka ʻokoʻa kemika.pā pōʻai'o ia ho'i ka lō'ihi -pololei, ka lā'au pa'a pa'a i ho'olako 'ia no ka mīkini a me ka hana'ana, kahika hoʻomanawanui anawaena, ka pololei, a me ke ʻano o ka ʻilipili pono i ka manawa pōʻaiapili a me ka helu o ka ʻōpala. "Rod"Hoʻohana pinepine ʻia ʻo ia no nā anawaena liʻiliʻi a, ma muli o ka ʻoihana, pili pahawili -feed uea-rod forms(manaʻo ʻia no ke kaha kiʻi, ka piko, a i ʻole ka hoʻopaʻa ʻana i nā ala uea) ma mua o ka ʻoki ʻana-ka lōʻihi.

ʻO kahi ala kūpono e hoʻokaʻawale iā lākou ʻo ka nānā ʻana i nā mea nui i ka loaʻa ʻana:

 

• Inā pono ʻoeʻoki-i-lōʻihi nā hakahaka no ka huli ʻana, ke kū'ai ma'amau nei 'oepahu poepoe-e mālama ʻoepololei, decarb, nā hemahema o ka ʻili, a me ke anawaena kūlikeno laila maʻemaʻe nā mīkini ʻāpana.
• Inā ʻo kāu hana houkaha kiʻi/hana(nā huahana uea, pūnāwai, uea hoʻopaʻa, coil{0}}feed processing), "lāʻau lāʻau"ʻo ia ka huaʻōlelo i hoʻohana pinepine ʻia, a ke neʻe nei ka manaʻo iʻano coil, ka mana unahi ʻili, a me ka huki ʻana.

 

ʻŌlelo maʻamau o ka mea kūʻai aku (kōkua e pale i ka pohihihi PO):

 

• Hoʻohana"paa puni"i ka wā e manaʻo ai kāu BOMØ nui + lōʻihi(e laʻa, Ø20 × 6 m) a ʻo kāu kaʻina hana i lalo ʻo ia ka machining/forging.
• Hoʻohana"rod / wire rod"i ka wā e manaʻo ai kāu BOMwili/kaumaha-mea hoʻolakoa ke kiʻi nei ke kaʻina hana i lalo.

 

Manaʻo kūʻai kūpono:kauohapahu poepoei ka wā e pono ai ʻoe i nā mea machining hiki ke wānana a me ka pololei paʻa; E hoʻohana i ka huaʻōlelo "koʻokoʻo" wale nō ke hoʻohana ʻia kāu kaʻina hana i ke kaha kiʻi, ka piko, a i ʻole ka uea-pili.

 

 

No ka hoʻohālikelike ʻana i ka ʻaoʻao, kōkua ia e hōʻike i ke kaʻina hana maoli. ʻO ke ala maʻamau no kēia-ikaika kiʻekiʻe kaʻa poepoe penei:

a) Ka hana kila a me ka hoʻomaʻemaʻe lua
Hoʻoheheʻe ʻia ke kila ma BOF a i ʻole EAF, a laila mālama ʻia ma LF/VD no ka wehe ʻana i ka sulfur a me ka phosphorus a e hoʻoponopono pololei i ka ʻike. ʻO kēia kahi i hoʻohui ʻia ai nā mea hoʻohui ʻia micro{1}}e like me V, Ti a me B. ʻO ka P haʻahaʻa a me ka S i kāu MTC (0.015–0.017% P, 0.003–0.004% S) ʻo ia ka hopena o kēia ʻanuʻu - hoʻomaikaʻi lākou i ka paʻakikī a me ka weldability.

b) Ka hoʻolei ʻana a me ka hoʻomākaukau billet
Hoʻolei ʻia ke kila i hoʻomaʻemaʻe ʻia i loko o nā bilets kūpono no ka ʻōwili pōʻai. He mea nui nā billet maʻemaʻe me ka haʻahaʻa hoʻokomo ʻana i nā hoʻokolohua e hōʻike ʻia ma kāu palapala hōʻoia.

c) Olokaa wela o ka pahu poepoe
Hoʻomaʻamaʻa ʻia nā pila a ʻōwili ʻia ma nā hale wili pahu a hiki i ke anawaena hope (e laʻa, 27 mm). Hoʻomalu ʻia ka ʻōwili ʻana no ka loaʻa ʻana o ka maikaʻi o ka ʻili, ka pololei a me ka hoʻomanawanui ʻana. Ua ʻoki ʻia nā lāʻau lāʻau i ka lōʻihi kalepa, ʻo 6 m maʻamau.

d) Hoʻomaʻamaʻa wela (hoʻomaʻamaʻa a hoʻopau paha + hoʻomāʻewaʻewa)
No ka loaʻa ʻana o nā waiwai mechanical i hōʻike ʻia ma ka palapala hōʻoia - tensile 950–960 MPa, hāʻawi ma kahi o 905–915 MPa, ikehu hopena ma –20 degere ma kahi o 100–110 J - ʻaʻole waiho ʻia nā kī "e like me ka ʻōwili wela". Hoʻomaʻamaʻa ʻia lākou a i ʻole, pinepine no kēia pae ikaika,kinai a me ka huhu (Q&T).

Ke kinai anahāʻawi i kahi hana martensitic / bainitic paʻakikī.

Ka hoʻohaunaelei ka mahana kūpono e ho'iho'i i ka ductility, ho'onui i ka pa'akikī, a ho'opa'a i ka microstructure.
ʻO kēia kaʻina ka mea e hoʻokiʻekiʻe ai ka ikaika akā mālama mau i ka elongation ma kahi o 13-14% a me ka hōʻemi ʻana o ka wahi ma luna o 50%.

e) Hoʻopololei, ʻoki a kaha
Ma hope o ka mālama ʻana i ka wela, hoʻopololei ʻia nā kaola, ʻoki ʻia i 6 m (a i ʻole nā ​​​​lōʻihi ʻē aʻe i kauoha ʻia), hoʻopili ʻia a kaha ʻia me nā helu wela.

f) Ho'āʻo a hōʻoia
Hana ka mea hana i ka ho'āʻo kemika, ka hoʻāʻo tensile, ka hoʻāʻo hopena ma ke degere –20, ka hoʻāʻo hoʻopololei, ka hoʻāʻo forging a me ka paʻakikī - i nā kolamu āpau āu e ʻike ai ma ka MTC. ʻO ka wā wale nō i "kūpono" lākou a pau e hoʻokuʻu ʻia nā pā. Hāʻawi kēia i ka poʻe kūʻai i ka hilinaʻi e hoʻokō kēlā me kēia pūpū i ka pae mechanical i ʻae ʻia.

 

 

 

ʻAʻole hōʻike ʻia ka hapa nui o nā pilikia kila lāʻau pōʻai ma ka pepa manaʻo -e hōʻike ʻia anama ka lathe, ma hope o ka mālama ʻana i ka wela, a i ʻole i ka wā e hui ai. No nā pāhana e ho'ohana ana i ka pā -ikaika / micro-ki'eki'e, ua kālele 'o Octal Pipe i nā kiko kūpono kūpono e ho'oholo ai i ka lilo 'ana o ka pahu i mea pa'a a i 'ole kekahi mea hana hou pipi'i.

 

ʻO ka mea maʻamau ka hewa ma ka pūnaewele	He aha ka mea e kikoo (ʻōlelo kūʻai)	He aha ka Octal Pipe e hoomalu ai ma ka wili
Hoʻopau ʻia nā mea hana i manaʻo ʻole ʻia	Kūlana hoʻouna + koi ʻili (wela -'ōwili / ʻili / huki ʻia)	ʻO ke ala hoʻomākaukau ʻili (e laʻa, ka ʻili ʻana inā pono) + hoʻopololei e hōʻemi i ka hoʻololi ʻana i ka mīkini
ʻO ka hoʻoheheʻe ʻana ma hope o ka mīkini	Ka hoʻomanawanui anawaena + koi pololei	OD/ovality + straightness checks to keep turn turn allowable predictable
Nahā i ka wā hoʻomaka anuanu / hanana hopena	Ka ikehu hopena ma kahi mahana i ʻōlelo ʻia (e laʻa, "CVN @ -20 degere")	Ho'āʻo hopena i hoʻopaʻa ʻia i ka wela/lot; hoʻokuʻu ma muli o nā hōʻike hōʻike, ʻaʻole nā ​​manaʻo
Heat-likelike like ole (pa'akiki loa / palupalu loa)	ʻO ke kūlana mālama wela (maʻamau / Q&T) + puka aniani paʻakikī	Hoʻopaʻa ʻia -wela + hōʻoia ʻoʻoleʻa i ka puka aniani i kuhikuhi ʻia
Loaʻa nā hemahema huna i ka lohi	NDT kikoʻī inā koʻikoʻi (UT ma ka ʻaelike)	Koho UT no nā ʻāpana koʻikoʻi + nā moʻolelo hoʻomaʻamaʻa hiki ke huli ʻia/{1}}hoʻāʻo hou inā pili

 

I ka hoʻomaʻamaʻa ʻana, hoʻololi kēia i "ka nui o ka pahu pōʻai + papa" i ahookomo hana hana: hiki mai ka pahu me kahi kūlana i wehewehe ʻia, ʻano hana machining hiki ke wānana, a me kahi kumu hoʻokuʻu e pili ana i ka ʻae ʻia ʻana o nā ʻāpana. Hiki iā Octal Pipe ke kākoʻo i ka huli ʻana ma muli o ka nui (helu wela → nā hualoaʻa hoʻāʻo) no laila e neʻe wikiwiki ana ka loaʻa ʻana o ka mākaʻikaʻi a me ka hoʻomaʻamaʻa ʻana i lalo me ka ʻole o nā pōʻai hoʻohālike hou.

 

 

No ka mea, hui keia meaikaika kiʻekiʻe (≈950 MPa), ductility kūpono (A ≈ 13-14%)amaikaʻi loa haʻahaʻa haʻahaʻa haʻahaʻa -ikahu hopena (ma kahi o 100–110 J ma –20 degere ), hiki ke hoʻohana ʻia i kahi ākea o nā ʻāpana koi:

Kākoʻo ʻia nā ʻāpana koʻikoʻi o ka mining, tunneling a me ka lepo -.
ʻO nā kī pōhaku, nā lāʻau heleuma, nā lāʻau wili a me nā ʻāpana ʻē aʻe e pono e hana i ke anuanu a i ʻole ke ʻano hoʻouka ʻia-pilikia. ʻO ka hua kiʻekiʻe (≈910 MPa) a me ka waiwai hopena maikaʻi e palekana i ka pahu ma lalo o nā haʻalulu haʻalulu.

ʻO ka ʻaila a me ke kinoea a me nā lako o waho
ʻO nā ʻāpana hoʻohui, nā flanges, nā hubs, nā ʻāʻī a me nā pale kahi i koi ʻia ai ka ʻoi aku o ka haʻahaʻa haʻahaʻa (–20 degere a haʻahaʻa paha). ʻO nā haʻahaʻa P/S haʻahaʻa a me nā hoʻokolohua i kākau ʻia e maʻalahi ka ʻae ʻana i nā papahana o waho a me ka moana.

Mechanical a me ka mana -mea lako
ʻO nā kumu, nā axles, nā pine, nā mīkini (ma hope o ka hoʻomaʻamaʻa hou ʻana a i ʻole ka paʻakikī o ka ʻili), nā papa mīkini a me nā mea hoʻoili e pono ai ka ikaika ʻoi aku ka ikaika ma mua o ke kila kalapona maʻamau.

Nā ʻāpana kaʻa kaʻaahi a me ke kaumaha-.
Ma kahi e pono ai ke kemika paʻa, ka ʻimi ʻana a me ka weldability (CEV mālama ʻia).

Hoʻopaʻa waiwai a me ka pahu mīkini
No ka ma'ema'e o ka kemika a ho'oma'ema'e 'ia ka hale, he kumu maika'i ka pā no nā -pani pa'a a i 'ole nā'āpana mīkini. Hiki i nā mea kūʻai ke hana i ka hana ʻana a mālama mau i ka pae mechanical ma hope o ka -hoihoi.

Nā papahana ma nā wahi anu
Hōʻike ka ikehu hopena i hōʻike ʻia ma ka –20 degere ma ka MTC e hiki ke hoʻohana ʻia kēia mau kaola ma nā wahi wela -akau / haʻahaʻa me ka hiki ʻole ke hāʻule.

 

Paʻa Poʻa Poʻo Kuhili ʻole

No ka ʻinoʻino-nā ʻāpana i ʻike ʻia, hiki i nā papahana ke kuhikuhike kila kila poepoema kahi o carbon/alloyhao poepoe-I ka manawa ma'amau i ka wā holoi, ka ha'aha'a kahakai, a i 'ole ka chloride-mea ho'opa'a 'ia e ho'olilo i ka pale-pili i ka hilina'i 'ole. Hiki i ka Octal Pipe ke ʻōlelo i nā mea ʻāpana ʻāpana poʻe ma ka ʻaoʻao o nā pūʻolo pahu hao i hiki i nā mea kūʻai ke mālama i hoʻokahi palapala a me hoʻokahi hoʻolālā hoʻouna. Loaʻa nā koho kuhili ʻole maʻamau i ka 304/304L no ka pale ʻana i ka corrosion maʻamau a me 316/316L kahi e koi ʻia ai ka palena lua chloride.

 

Hoʻokaʻaʻike i kēia manawa

 

 

'ikamu	wehewehe
Anawaena	5 – 360 mm (wela -wili ʻia); nā nui kalahala a ʻili paha ma ke noi
Ka lōʻihi	6 m maʻamau, 3-12 m hiki ke hoʻonohonoho ʻia
Kūlana hoʻouna	E like me ka ʻōwili ʻia, maʻamau, Q&T
Nā kūlana hiki iā mākou ke hoʻohālikelike	GB/T, ASTM/AISI, EN, hana moku a i ʻole kiʻi kiʻi mea kūʻai
Palapala	ʻO ka palapala hōʻoia Mill (kemika + mechanicals + impact), papa inoa hoʻopaʻa, kumu
Nānā	Hiki ke hoʻonohonoho ʻia ka -ʻaoʻao ʻekolu (SGS / BV) ma mua o ka hoʻouna ʻana

Nā huahana pale: ʻO ka pahu pōʻai, Kina nā mea hana, nā mea hoʻolako, hale hana