Zeziphi izikhombisi zobugcisa carburizing kunye nokucima iindawo?

I-Carburizing kunye nokucima yenza i-martensite layer kunye nomxholo ophezulu wekhabhoni phezu kwendawo, enobunzima obuphezulu, umxholo ophezulu we-carbide kunye nokumelana nokugqoka okuphezulu. Undoqo yi-low-carbon martensite structure, ngoko ke i-surface compressive stress inkulu. Ubunzima bubonke buphezulu. Ezi mpawu zenza ukuba i-carburizing kunye nokucima kusetyenziswe ngokubanzi kwiigiya kunye namanye amalungu afuna ukuxhathisa ukunxiba, amandla aphezulu okudinwa, kunye namandla aphezulu okudinwa. Ukuqina kwe-induction kuneempawu zokufudumeza ngokukhawuleza kunye nokupholisa ngokukhawuleza, okwandisa kakhulu ubungakanani beenkozo zezinto. Ngelixa ifumana ubulukhuni obuphezulu kakhulu, ifumana isalathisi sokuqina okuphezulu, ngaloo ndlela iphucula ukusebenza kwamalungu.

1. Ukuxhathisa i-abrasion

Amacandelo e-carburized kunye nokucima anokumelana nokunxiba okuphezulu ngenxa yobunzima obuphezulu kunye ne-carbides phezu komhlaba. Ukuqina kwe-induction kunokufumana ubunzima obuphezulu phantsi komxholo wekhabhoni ephantsi, kwaye ukuxhathisa ukunxitywa kunxulumene ne-microstructure yayo.

20CrMnTiH3 carburizing quenching kunye 45 steel induction quenching yenziwa iisampulu zokunxiba ezisemgangathweni, ezinobulukhuni be62 ~ 62.5HRC, zivavanywe kumatshini wokunxiba we-M-200, kwaye iindawo zokunxiba ziyi-T10. Emva kwe-1.6 yezigidi zezihlandlo zokugqoka, isampuli ye-carburized yalahlekelwa yi-4.0 mg kunye ne-induction quenched sample yalahlekelwa yi-2.1 mg. Yeyiphi indlela eyenza ukuba iisampulu ze-induction ziqine zibe nokuxhathisa okuphezulu kokunxiba? Kufanelekile ukufundisisa.

2. Amandla

Ngokuqhelekileyo kukholelwa ukuba amandla ahambelana nobunzima, kwaye ubunzima obufanayo bunokufumana amandla afanayo. Kwiindawo ezithile, zeziphi ezinye iiparameters ezinxulumene nayo? Sivavanye imizekelo ye-dumbbell-shaped tensile esemgangathweni eyenziwe nge-20CrMnTiH3 carburizing kunye nokucima kunye ne-45 steel, 40CrH, 40MnBH induction quenching. Idayamitha esebenzayo yesampulu yayiyi-20mm, kwaye amandla alinganisiweyo e-tensile yayiyi-819MPa, 1184MPa, 1364MPa, Kwi-1369MPa, amandla eisampulu zentsimbi ephakathi kwekhabhoni emva kokucinywa kokungeniswa kuphezulu kakhulu kunoko kwamalungu ecarburized.

Iziphumo zezi nkqubo zimbini ziyathelekiswa. Umphezulu wesampulu ye-carburized kunye nokucima i-high-carbon martensite, i-carburized layer yi-1.25mm, ukuqina kwe-62-63HRC, kwaye i-core yi-carbon martensite ephantsi, kwaye ubunzima yi-32HRC. Umphezulu wesampulu ye-induction lukhuni yi-medium-carbon martensite, ubunzulu bomgangatho owenziwe lukhuni ngu-3.6mm, ukuqina ngu-62HRC, kwaye i-core is tempered sorbite, ukuqina kwe-26HRC. Kunokufunyaniswa ukuba kukho umahluko omkhulu kubunzulu bomaleko owenziwe lukhuni womphezulu ofunyenwe ngeendlela ezimbini zonyango, kwaye ukwenziwa lukhuni kwe-induction kunokufumana umaleko oqina nzulu, ngaloo ndlela kufumaneke ukomelela kwenxalenye enkulu. Ngoko ke, xa sixoxa ngenkqubo yokomeleza ingcono, asimele siyihlalutye kuphela kwi-micro perspective, kodwa siyiqwalasele kwi-macro perspective.

3. Amandla okudinwa

Emva kokuqina kwe-carburizing kunye ne-induction, umphezulu wamalungu uyomelezwa ngokufanelekileyo, kwaye uxinzelelo olukhulu olushiyekileyo lwenziwa, kwaye zombini zinamandla aphezulu okudinwa.

Izixhobo zegiya ezine-modulus ye-2.5 zikhethiwe kuphando, kwaye zaye zatshiswa kwaye zacinywa nge-20CrMnTiH3 kunye nobunzulu be-carburizing ye-1.2mm; Intsimbi ye-45 kunye ne-42CrMo yafakwa lukhuni kunye neengcambu zezinyo ezicima ubunzulu be-2.0mm. Ukuqina yi-61～63HRC, kwaye amazinyo aphantsi emva konyango lobushushu. Uvavanyo kumatshini wokuvavanya ukukhathala ngokuhambelana nendlela yokulayisha eboniswe kwi-Figure 1. Ukugoba kwe-median ukukhathala ekugqibeleni imithwalo yoxinzelelo lwezinto ezintathu ezahlukeneyo kunye namazinyo okushisa aphethwe ngubushushu yi-18.50kN, 20.30kN kunye ne-28.88kN, ngokulandelanayo. Amandla okudinwa kwe-42CrMo induction hardened gears yi-56% ephezulu kune-20CrMnTiH3 carburizing kunye nokucima, enenzuzo ebalulekileyo. Ukuhlalutya indlela yayo, kuyimfuneko ukuqala ngesakhiwo somaleko olukhuni, inqanaba loxinzelelo loxinzelelo lomphezulu, ukwakheka kwentliziyo kunye nobunzima.

4. Qhagamshelana namandla okudinwa

Kwizixhobo zegiya, ukusilela kokudinwa komphezulu wezinyo yeyona ndlela iphambili yokusilela. Iigiya zokukhanya okukhanyayo zineemfuno eziphantsi zokudinwa koqhagamshelwano, kwaye nokuba ukuqina kwe-induction kunokubuyisela i-carburizing kunye nokuqina kwiigiya ezithile ezinzima, esi salathisi singumxholo omele uhlolwe. Uphando lwethu kulo mmandla alunzulu ngokwaneleyo.

5. Ukucima deformation

Inkqubo ye-carburizing inokushisa okuphezulu, ixesha elide kunye ne-deformation enkulu yokucima. Inkqubo yokugaya elandelayo iya kubhitya umphezulu ngamandla aphezulu kunye noxinzelelo oluphezulu loxinzelelo, okukhokelela ekunciphiseni kwamandla enxalenye. Ukucima i-carburizing kunye nokucima iigiya kusanda kusebenzisa itekhnoloji yokucima i-press, injongo kukunciphisa ukucima ukuguqulwa. I-deformation yokuqina kwe-induction incinci, kwaye ngenxa yobunzima bomgca ocinyiweyo, impembelelo yokugaya kubunzulu obuqinileyo buncinci.