440 steel - stainless hlau. Steel 440: cov yam ntxwv

Steel hu ua ib tug compound ntawm hlau thiab carbon. Hom ntawm cov ntaub ntawv uas yog tsis yog txiav txim los ntawm tus piv ntawm pib kawm, thiab nyob rau hauv lub hauv paus ntawm lub impurities thiab additives conferring khoom sib txawv zog thiab cov yam ntxwv.

Hom ntawm steel, raws li cov pricing txoj cai yuav tsum tau muab faib mus rau hauv pab pawg, pheej yig, nrov thiab kim heev. Nws tag nrho cov nyob ntawm lub hom phiaj ntawm cov ntaub ntawv uas teeb meem ntawm nws lawm. Ntxiv mus, muaj yog tsis muaj zoo los tsis zoo uniquely hlau, raws li active khoom comprises ib complex ntawm cov yam ntxwv uas hais tias tau tej yam tej yam kev mob. Tshwj xeeb, nws yuav tau pom hais tias peb xav txog, piv txwv li, 440 steel.

steel Cheebtsam

Zoo steel yuav tsum tau yus ib txhij hnav kuj, toughness, elasticity, ductility, toughness, endurance thiab corrosion muaj peev xwm hliav. Nyob rau hauv kev xyaum, yuav luag tag nrho cov ntawm cov zog yog tsis tooj mus rau txhua lwm yam. Ib tug ntawm lub ntsiab ntsiab ntawm lub alloy, yog lub luag hauj lwm rau lub hardness thiab rigidity, yog cov pa roj carbon. Rau tebchaw uas muaj cov ntsiab lus ntawm nws muaj xws li cov neeg nyob rau hauv uas lub concentration ntawm ib tug muab tshuaj lub caij yog ntau tshaj 0.5%. Hnav kuj cuab yeej thiab uas tsis muaj propensity rau xeb lub txiaj ntsim chrome hlau. Yog hais tias cov theem yog ntau tshaj 13%, qhov no stainless steel khoom.

Lis loj, muaj zog, nruj muab cov hlau ntawm manganese. Nws yog siv nyob rau hauv cov kauj ruam ntawm forging thiab dov. Qhov no thiaj li hu ua tua hlau.

Rau cov khoom los ntawm cov khoom no twb tsis nkig thiab puas yooj yim thiab tsis tau yog resistant kom sov, ib tug compound yog ntxiv molybdenum. Nyob rau hauv cov ntaub ntawv no, lub alloy yog hu ua huab cua-quenched.

Nws yuav pab txo txoj kev pheej hmoo ntawm corrosion thiab muab lub hardness ntawm npib tsib xee. Khoom Fortress muab cov ntaub ntawv uas silicon. Tungsten thiab vanadium hlau muab lub dag lub zog thiab durability.

Nta steel qib 440

440 koom stainless steel cov ntaub ntawv. Nws yog siv mas rau qhov siv thiab ua cov riam, cov tsev lug. Lub qhov txawv feature ntawm no hlau yog resistant rau corrosion thiab siab zog. Tsis tas li ntawd nyob rau hauv no series yog lub zoo dua ntawm kuj mus ib puag ncig yam tseem ceeb, dej, rau cov zaub mov, tsis muaj zog acids thiab alkalis.

Steel qib 440 muaj xws li subspecies 440A, 440B, 440C, thiab 440A series - lwm yam softer thiab 440C - nyuab me ntsis. Txawm li cas los, lub drawback yog lub fragility ntawm 440C thiab ib tug kuj tsis tshua muaj kuj mus xeb nyob rau hauv relation mus 440A thiab 440B. Nws hloov tawm hais tias xeb yuav tshwm sim nyob rau heev kev sib cuag nrog dej los yog txhoj puab heev media. Txawm tias ntxiv zog, xeb tiv thaiv, muab qhov no alloy vim du polished nto.

Nws tsis pom zoo kom siv 440 steel ntawm ib tug kub siab tshaj nws cov tshav kub thaum lub sij hawm taug kev mus, txij li thaum nyob rau hauv rooj plaub no tus txhua yam khoom ntawm lub alloy ploj lawm.

Cov tshuaj nyob tus yeees ntawm steel 440

Steel 440, tus yam ntxwv uas yog ncaj qha nyob rau hauv lub tshuaj nyob tus yeees, raws li cov series, muaj lub ntsiab muaj nyob rau hauv lub rooj hauv qab no.

Raws li lub rooj qhia tau hais tias, tus nqi qis tshaj carbon cov ntsiab lus ntawm 440A series, lub siab tshaj plaws - 440C, uas yog, qhov tseeb hom muaj zog tshaj li tag nrho, thiab cov thawj yog cov feem ntau resistant rau corrosion. Txawm tias tag nrho cov series ntawm lub hom haum siab zoo thiab zoo load hloov lwm lub tsev.

Lub cev muaj zog thiab thermal kho mob ntawm stainless steel 440

Steel 440 lub cev tus yam ntxwv tsis rau lub series A, B thiab C muaj cov nram qab:

• cov ntaub ntawv uas ceev - 7650 kg / cu. m;
• modulus - 200 GPA;
• thermal conductivity - 242 W / m kbp.;
• tej thaum tshav kub kub muaj peev xwm - 460 J / kg.kb.;
• hluav taws xob resistivity - 600.

Hardness ntawm steel 440 txawv tsis pub dhau 56-58 units.

Qhov nruab nrab thermal expansion coefficient, uas yog ntsuas nyob rau hauv hli / m / degree centigrade ntawm 440A series - 10.1; 440B - 10.3; 440C - 11,7.

Thaum tshav kub kub kev kho mob ntawm cov khoom no kis tau los ntawm cov nram qab no cov kauj ruam:

• annealing;
• quenching;
• so.

Annealing yuav siv sij hawm qhov chaw nyob rau ib tug kub ntawm + 850-900 degrees Celsius, ua raws li los ntawm ib tug tas mus li yuav txo tau los _600. Cua txias tshwm sim los ntawm huab cua txoj kev. Ces - txoj kev damped annealing ntawm 735-785 degrees thiab txias nyob rau hauv lub cub tawg.

Tempering yog nqa tawm ntawm + 1010-1065 degrees Celsius. Quenching - siv sov roj los yog huab cua.

So kis ntawm + 150-370 degrees, yog li ntawd cov ntaub ntawv uas yog muab cov kev tsim nyog hardness. Ntawm cov ntau ntau yam ntawm cov ntaub ntawv uas xws li steel 440, tus yam ntxwv ntawm cov neeg kho tshuab txiav txim nyob rau hauv qhov zoo tshaj plaws qib 440C. Qhov no alloy yog lub feem ntau kim heev thiab txhim khu kev qha. Nws txhais cov khoom zoo txheem.

Daim ntaub ntawv Steel 440

440 stainless steel yog feem ntau siv rau qhov siv thiab ua riam. Ntiav muab hlau rau lub tsev khoom uas yog welded los yog lwm yam sib txuas.

Cov ntawv ntawm tiav lawm cov khoom yog ua nrog thickness ntawm 4 mus rau 50 mm. 440 steel tsis yuav tsum tau ntxiv cov cua kub thiab kub kev kho mob thaum lub sij hawm nws welding. Yooj yim thiab txhim khu kev qha hlau rau zus tau tej cov bearings, pieces ntawm yeeb nkab fittings.

440A ntawm lub hom tsim tawm ntau ua tau txawv txawv riam, nrog rau underwater, kev yos hav zoov. Cov tuaj ntawm lub 440C series muaj zoo tej zog thiab ib tug zoo raug ntawm hliav, yog li no steel yog siv rau zus tau tej cov cov neeg tseem ceeb tej cuab yeej.

Koj yuav tsum paub tias thaum twg yuav ib tug riam sau tias "440" uas yog siv tsis tshua kim hlau - 440A. Nyob rau hauv cov ntaub ntawv ntawm kim kim tebchaw 440B thiab 440C manufacturers yeej ib txwm them xim rau nws.

lwm hom

Muaj ib tug xov tooj ntawm lwm hom, uas yuav tsum tau hloov los ntawm no hlau. Piv txwv li, ib tug series ntawm 440A / B possesses nta ntxiv uas txhim kho xeb kuj. Steel 440F muaj ntau dua workability ntawm ib tug uas zoo sib xws zog. Ua tsis tau zoo rau lawv tus kheej cov yam ntxwv rau hardness qib 420. 416 series muaj ib tug high workability tab sis sab kev ntseeg.

Yog hais tias koj ua riam los ntawm 440A hom thiab nws analogs, cov khoom uas haum rau niaj hnub siv. Txawm tias, nws yog tsim nyog mus rau hauv tus account qhov zoo tshaj ntawm quenching. Zoo pov thawj nyob rau hauv tus txheej txheem no ruaj Cor. Lub tuam txhab "Randall" mas ua steel tuaj 440B.