Isinyathelo esibaluleke kakhulu kwimveliso yeebholiti eziphezulu

Amabanga aphezulu ebholithi aveliswa ngumzi-mveliso wethu aquka imetric 8.8, 10.9, 12.9, ASTM standardUNC Gr5, 8 amabanga. Amantongomane aphezulu aquka i-metric 8 kunye ne-10 amabakala, kunye ne-ANSI ibakala eliqhelekileyo lesi-5 kunye ne-G8, zonke ezifuna unyango olushushu.

Ukucima kunye nokufudumala kubhekisela kwinkqubo yonyango yokushisa esetyenziselwa ukuphucula iimpawu ezibanzi zomatshini wezinto zetsimbi. Emva kokucima, iphantsi konyango lobushushu obuphezulu. Injongo kukuphumeza indibaniselwano elungileyo yamandla kunye nokuqina kumacandelo entsimbi, kunye namandla aphezulu kunye nokuqina okugqwesileyo, iplastiki, ukusika ukusebenza, njl njl. Ezinye iintsimbi ze-alloy okanye i-alloy steels okanye i-alloy-alloy steels kufuneka ziqhube ukucima kunye nokutshisa ukuze kufumaneke iipropati ezintle ezibanzi, kwaye ezi zintsimbi zingabizwa ngokuba yintsimbi ecinyiweyo kunye neyomsindo. Emva kokucima kunye nokunyangwa, isinyithi se-ductile asikwazi nje ukuphucula amandla, kodwa siphucula ubulukhuni kunye nokumelana nokunxiba.

intshayelelo emfutshane
Ukucima kunye nonyango olushushu lubhekisela kwindlela yonyango yokushisa kabini yokucima kunye nobushushu obuphezulu, obujolise ekwenzeni i-workpiece ibe neepropati ezilungileyo ezibanzi zoomatshini. Ubushushu obuphezulu bubhekisa kubushushu obuphakathi kwe500-650 ℃. Uninzi lwamalungu acinyiweyo kunye nobushushu asebenza phantsi kwemithwalo emikhulu eshukumayo, ethwele iziphumo zoxinzelelo, uxinzelelo, ukugoba, ukugoba, okanye ukucheba. Eminye imiphezulu ikwanazo nokukhuhlana, kufuna ukuxhathisa okuthile, njalo njalo. Ngamafutshane, amalungu asebenza phantsi koxinzelelo olwahlukeneyo oludibeneyo. Ezi ntlobo zamalungu ubukhulu becala ngamalungu olwakhiwo koomatshini kunye neendlela ezahlukeneyo, ezinje ngeeshafti, iintsimbi zokuqhagamshela, iibholithi, iigiya, njl. Ngokukodwa kumacandelo amakhulu kwimveliso yoomatshini abanzima, ukucinywa kunye nonyango lobushushu lusetyenziswa kakhulu. Ngoko ke, unyango olushushu ludlala indima ebaluleke kakhulu kunyango lobushushu. Iimfuno zokusebenza zamacandelo acinyiweyo kunye nobushushu kwiimveliso zoomatshini ziyahluka ngokuxhomekeka kwiimeko zabo zoxinzelelo. Ngokuqhelekileyo, iinxalenye ezahlukeneyo ezicinyiweyo kunye nobushushu kufuneka zibe neempawu ezigqibeleleyo zomatshini, oko kukuthi, indibaniselwano efanelekileyo yamandla aphezulu kunye nokuqina okuphezulu, ukuqinisekisa ukusebenza kakuhle kwexesha elide lamalungu.
Amanyathelo kunye nemigaqo
Ukucima yinkqubo yesinyathelo sokuqala, kwaye ukushisa kokufudumala kuxhomekeke ekubunjweni kwentsimbi. Ukucima okuphakathi kukhethwe ngokusekelwe kwikhono elinzima lentsimbi kunye nobukhulu becandelo lensimbi. Emva kokucima, intsimbi inoxinzelelo oluphezulu lwangaphakathi kwaye i-brittle kakhulu. Ukunciphisa kuyimfuneko ukuphelisa uxinzelelo, ukwandisa ukuqina, kunye nokulungelelanisa amandla. I-Tempering yinkqubo ebaluleke kakhulu yokulinganisa iimpawu zomatshini wentsimbi ecinyiweyo kunye neyomsindo. Igophe leepropathi ezahlukeneyo zentsimbi ezitshintsha ngobushushu bobushushu, obukwabizwa ngokuba ligophe lokupholisa lentsimbi, linokusetyenziswa njengesiseko sokukhetha ubushushu bobushushu. Ubushushu obuphezulu bobushushu be-alloy ethile ecinyiweyo kunye neentsimbi ezinobushushu, ingqwalasela kufuneka ihlawulwe ekuthinteleni ukwenzeka kohlobo lwesibini lwe-teering brittleness ukuqinisekisa ukusebenza kwentsimbi.
isicelo
Ukucima kunye nonyango olushushu lusetyenziswa ngokubanzi kwiindawo zesakhiwo ezifuna umsebenzi obalaseleyo obanzi, ngakumbi ekusebenzeni phantsi kwemithwalo etshintshanayo, njengeeshafti zemoto kunye nezixhobo, iishafti ze-injini kunye neediski ze-compressor zeenjini zeenqwelo-moya, njl njl. umaleko kwaye unokufezekisa iipropathi ezilungileyo ezibanzi zoomatshini kumbindi. Amalungu e-nitrided atyholwa kunye nonyango olushushu ngaphambi kokuba i-nitriding iphucule ukusebenza kwentsimbi kwaye ilungiselele isakhiwo se-nitriding. Ukuze ufezekise ukugudiswa okuphezulu kwesixhobo sokulinganisa ngaphambi kokucima, ukuphelisa uxinzelelo olubangelwa kumatshini olukhuni, ukunciphisa ukucima ukuguqulwa, kwaye wenze ukuqina emva kokucima okuphezulu kunye nokufana, ukucinywa kunye nokunyamezela unyango kunokuqhutyelwa ngaphambi kokulungiswa ngokuchanekileyo. Ngeentsimbi zesixhobo kunye ne-network carbides okanye iinkozo ezirhabaxa emva kokunyangwa, ukucinywa kunye nokuthambisa kungasetyenziselwa ukuphelisa umnatha we-carbide, ukucokisa iinkozo, kunye nokuphucula ukucwangciswa kwe-spheroidizing i-carbides, ukulungiselela i-microstructure yonyango lokugqibela lobushushu.
Itekhnoloji yokucubungula
Inkqubo yonyango yobushushu yentsimbi ibandakanya iindlela ezinje nge-annealing, normalizing, quenching, tempering, kunye nonyango lobushushu bomhlaba. Phakathi kwazo, ubushushu bubandakanya ubushushu obuphezulu, ubushushu obuphakathi, kunye
Ubushushu obuphantsi. Ukufudumeza intsimbi ecinyiweyo kwiqondo lobushushu elithile uze uyipholise ngendlela ethile kubizwa ngokuba yi tempering. Injongo kukuphelisa uxinzelelo lwangaphakathi oluveliswa kukucima, ukunciphisa ubulukhuni kunye nokuqina, kunye nokufezekisa okulindelekileyo.

iimpawu zoomatshini.
Ukucima kunye nokutshisa ngokuqhelekileyo kubhekisela kwinkqubo yonyango lobushushu lokucima kunye nobushushu obuphezulu bokufumana i-martensite epholileyo. Indlela yokuqala ukucima, kunye nobushushu bokucima i-Ac3 + 30-50 ℃ yensimbi ye-hypoeutectoid; Intsimbi ye-Eutectoid yi-Ac1+30~50 ℃; Intsimbi ye-alloy inokuphucula kancinci xa kuthelekiswa nentsimbi ye-carbon. Emva kokucima, ukufudumala kunokuqhutywa kwi-500-650 ℃.
Intsimbi ecinyiweyo nepholileyo
Intsimbi ebizwa ngokuba yi-quenched and tempered steel ngokuqhelekileyo ibhekisela kwi-carbon steel medium kunye ne-carbon content ye-0.3-0.6%. Amalungu enziwe ngolu hlobo lwentsimbi ngokubanzi afuna iimpawu ezilungileyo zoomatshini, oko kukuthi, ukugcina amandla aphezulu ngelixa kukho iplastiki elungileyo kunye nokuqina. Abantu bahlala besebenzisa unyango lokumodareyitha ukufezekisa le njongo, ngoko ke abantu bahlala bebhekisa kolu hlobo lwentsimbi njengentsimbi ecinyiweyo kunye nenomsindo. Kufuneka kuqatshelwe ukuba ngamanye amaxesha intsimbi ecinyiweyo kunye neyomsindo ibhekisela kwinkqubo yokongeza i-manganese kunye ne-silicon ngexesha lokunyibilika kwensimbi, kwaye ingqalelo kufuneka ihlawulwe kumahluko.

I-Ningbo Zhongli bolts yokuvelisa i-co.ltd inezixhobo zayo zokunyanga ukushisa okusivumela ukuba silawule umgangatho ngokwethu, onobubele kakhulu kubathengi abaneemfuno eziphezulu. Emva konyango lobushushu, siya kuvavanya ubulukhuni, amandla okuqina, kunye nobude beiibholiti kunye namantongomaneSinelebhu yethu yovavanyo. Sivelisa kakhulu i-GB, i-DIN, i-ASTM i-bolts ephezulu yamandla kunye namantongomane. Kubandakanywa iibholiti ezinecala le-GB5782/5783, DIN931/933,DIN912,DIN6914,EN14399, A325,A193 B7,2H NUTS, Hexagonal nutI-DIN934, DIN6915,A563, iFlat pad DIN125, DIN6916,F436.