440 steel - insimbi engagqwali. Steel 440: izici

Steel ngokuthi ekhuthaza yensimbi ne-carbon. Izinhlobo okokusebenza kungukuthi ngokwendlela isilinganiso izingxenye eziyisisekelo, futhi ngesisekelo ukungcola kanye izithasiselo bhunga umkhiqizo izakhiwo ezahlukene kanye nezici.

Izinhlobo steel, ngokuya ngenqubomgomo zamanani zingahlukaniswa zibe subgroups, ezishibhile, ethandwa futhi kuyabiza. Konke kuncike injongo nobunzima impahla ukukhiqizwa yayo. Ngaphezu kwalokho, akukho ingxubevange okuhle noma okubi kuphela, njengoba impahla esebenzayo yakhiwa eyinkimbinkimbi izici ukuthi sihlangabezane nezimfuneko ezithile. Ngokucacile, kungabonwa uma sicabanga, isibonelo, 440 steel.

izingxenye steel

Quality steel kufanele kuhambisane kanyekanye ukugqoka ukumelana, ubunzima, kuyaqina, ductility, ubunzima, ukukhuthazela ukugqwala ikhono imimese. Ekusebenteni, cishe zonke lezi izakhiwo eziphambene nomunye. Omunye izakhi eyinhloko ingxubevange, unesibopho nobulukhuni kanye rigidity, carbon. Ukuze compounds ngokuqukethwe eliphezulu ke zihlanganisa lezo lokuhlushwa elinikeziwe chemical isici mkhulu kunezinhliziyo 0.5%. Gqoka ukumelana impahla kanye propensity low ukugqwala ayinika-chrome steel. Uma ezingeni mkhulu kunezinhliziyo 13%, lokhu imikhiqizo engagqwali.

usayizi yokusanhlamvu, amandla, ukuqina unika ingxubevange manganese. It is lisetshenziswe isinyathelo ekwakheni kanye kweqa. Lokhu okuthiwa steel abulawe.

Ukuze umkhiqizo kulokhu kwaziswa kwakungafanele ziyaqothuka futhi ethambile kodwa amelana nokushisa, ekhuthaza kuyinto molybdenum wanezela. Kulokhu, ingxubevange ibizwa ngokuthi umoya-ungacimi.

Kuyasiza ukunciphisa ingozi ukugqwala futhi ukunika nobulukhuni nickel. Impahla Fortress inikeza Silicon impahla. Tungsten futhi vanadium ingxubevange unika amandla nokuqina kwayo.

Izici steel grade 440

440 iphathelene engagqwali izinto steel. It isetshenziswa ngokuyinhloko womshini imimese, isakhiwo izakhiwo. I lolwehlukanisa lokhu ingxubevange linamandla ukugqwala futhi amandla aphezulu. Futhi kulolu chungechunge inzuzo yokumelana yizici zemvelo, amanzi, nokudla, acid ababuthakathaka futhi alkalis.

Steel grade 440 kuhlanganisa zenyathi 440A, 440B, 440C, futhi 440A uchungechunge - nezinye ethambile futhi 440C - nzima. Nokho, ethile iyona fragility we 440C kanye ukumelana iphansana ukugqwala maqondana 440A futhi 440B. It kuvela ukuthi ukugqwala singenzeka ku Oxhumene naye isikhathi eside umswakama noma imidiya nolaka. Nakuba izindawo ezengeziwe, nokugqwala ukukhalima, unikeza lesi ingxubevange ngenxa bushelelezi kwamanzi ophucuziwe.

It is hhayi Kunconywa ukusebenzisa 440 steel ezingeni lokushisa ephakeme kunaleyo ekushiseni kwalo ngesikhathi ukuhamba, ngoba kulesi simo elahleka izakhiwo mechanical ingxubevange.

I amakhemikhali ukwakheka of okuhlinza 440

Steel 440, izimfanelo okuyinto encike ngqo kwi ukwakheka kwamakhemikhali, ngokuvumelana chungechunge, iqukethe izici oluqukethwe kuleli thebula elingezansi.

Njengoba lesi sithombe sibonisa etafuleni, zimunca okuqukethwe ezijulileyo 440A chungechunge, aphakeme - 440C, okungukuthi, sha zakamuva namandla kunabo bonke, futhi owokuqala yilona ukumelana kunazo ukugqwala. Nakuba zonke uchungechunge sha izinga kahle eliphezulu futhi ukudluliswa ezinhle umthwalo.

Izakhiwo kanye nokwelashwa ezishisayo insimbi engagqwali 440

Steel 440 ngokomzimba izici ipharamitha uchungechunge A, B no-C has okulandelayo:

• inhlanganiso impahla - 7650 kg / cu. m;
• wemfihlo - 200 GPA;
• conductivity ezishisayo - 242 W / m kbp;.
• ethize ukushisa umthamo - 460 J / kg.kb;.
• kagesi resistivity - 600.

Ukuqina ensimbi 440 kuyahlukahluka ngaphakathi amayunithi 56-58.

Isilinganiso ezishisayo ukunwetshwa Coefficient, okuyinto ulinganiswa mm / m / degree centigrade at 440A uchungechunge - 10.1; 440B - 10.3; 440C - 11.7.

ukwelashwa ukushisa kwale nto sidlula izinyathelo ezilandelayo:

• annealing;
• eqeda;
• iholide.

Annealing senzeka ezingeni lokushisa + 850-900 degrees Celsius, kulandele ukuncipha njalo _600. Ukubandisa kwenzeka ngendiza indlela. Khona - inqubo damped annealing at 735-785 degree ukupholisa esithandweni.

Tempering Kwenziwa ngaso + 1010-1065 degrees Celsius. Ukukholisa - esebenzisa amafutha efudumele noma emoyeni.

Iholide sihamba ngesikhathi + 150-370 degrees, ukuze impahla kunikezwa nobulukhuni kunesidingo. Phakathi kwezinhlobo ezihlukahlukene impahla ezifana steel 440, izimfanelo isinyathelo mechanical okungcono grade 440C. Lokhu ingxubevange yilona ebizayo kakhulu futhi enokwethenjelwa. Kuchaza indinganiso imikhiqizo izinga.

Izicelo Steel 440

440 insimbi engagqwali ikakhulu esetshenziswa womshini imimese. Qasha ingxubevange ekhishelwe ukwakha imikhiqizo zazo ashiselwe noma nezinye izingxube zamakhemikhali.

AmaSpredishithi imikhiqizo siphelile akhiqizwa nge ukushuba kusuka 4 kuya 50 mm. 440 steel akudingi Ukushisa ezengeziwe kanye nokwelashwa ukushisa ngesikhathi Welding wakhe. ingxubevange elula ngokomlando ukwenziwa amabombo, izingcezu ipayipi nokufakwa.

440A brand ukhiqiza imimese sezimiso ngaphezulu, kuhlanganise kwamanzi, ukuzingela. Izindwani yochungechunge 440C babe kakhulu ahlabayo izakhiwo kanye ukuchayeka ezinhle imimese, ngakho-ke lokhu steel isetshenziswa ukwenziwa elite cutting amathuluzi.

Udinga ukwazi lapho ukuthenga ummese esibhalwe ukuthi "440" ezisetshenziswa ingxubevange engabizi - 440A. Endabeni compounds ezibizayo 440B futhi abakhiqizi 440C njalo banake kuso.

brand okunye

Kunezindlela eziningana lemikhiqizo okunye, okungase indawo yilo ingxubevange. Ngokwesibonelo, uchungechunge 440A / B anazo izici ezengeziwe ngcono ukumelana ukugqwala. Steel 440F has workability ephakeme endaweni amandla afanayo. Kunabayeni izici yabo ubulukhuni grade 420. 416 uchungechunge has a workability okusezingeni eliphezulu kodwa nokwethenjelwa aphansi.

Uma wenza imimese kusukela 440A sha futhi analogs yayo, le mikhiqizo Site ukusetshenziswa nsuku zonke. Nakuba, kuyafaneleka ukuba acabangele izinga eqeda. kungase kutholakale kule nqubo ngokuqinile Kor kahle. Le nkampani "Randall" ikakhulu ukhiqiza izindwani steel 440B.