Thelekisa ukufudumeza ubushushu kunye nobushushu besithando somlilo

Xa kuthelekiswa nokubila kwiziko, ukufudumeza ukufudumeza kobushushu kunezi zinto zilandelayo:

1) Ixesha lokufudumeza lifutshane kwaye imveliso iphezulu. Iqondo lobushushu elonyukayo lokungenisa ubushushu obuphantsi yi-4-20T / s, izinga lokunyuka kweqondo lobushushu eliphakathi kunye nobushushu obuphezulu yi-5-30Y / s, i-cylinder liner isebenzisa amandla e-tempering frequency, iziqwenga ze-3 ngexesha, kunye nokubila ixesha le-220Y li-30-40s.

2) Iipropathi zozinzo kunye ezingcono zoomatshini ziyafumaneka.

Umntu othile uwenzile uvavanyo ukunyanzeliswa, Ukufudumeza ubushushu kunye nokubila (IH), ukufudumeza iziko kunye nokubila (FH) kweePC zentsimbi. Iiparamitha zobuchwephesha beenkqubo zonyango ezimbini zobushushu zibonisiwe kwitafile.

Iindidi ezimbini zonyango ubushushu iinkcukacha technical iparameters

Iziphumo zovavanyo ezimbini zibonisa ukuba:

1) Kwiindlela ezimbini zokufudumeza, ubulukhuni besampulu yesinyithi yentsimbi yehla ngokulandelelana ngokonyuka kweqondo lobushushu lobushushu.

2) Ukuze ufumane ubunzima obufanayo bokushisa, iqondo lokushisa kwe-IH li-100-130 ℃ liphezulu kune-FH. Lo mahluko unokwenza iziphene ezibangelwa lixesha elifutshane lokufudumeza i-IH.

I-3) Usebenzisa uhlalutyo lwe-X-ray yokuphambuka, amaqhezu e-austenite agciniweyo alinganiswa ngobushushu obuphezulu bokufudumeza kunye neesampulu zokufudumeza iziko ngokubanzi yayiyi-4.3% kunye ne-3%, ngokwahlukeneyo, kwaye ngokuthe ngcembe zinciphile ngokunyuka kwamaqondo obushushu; kodwa kubushushu obufanayo bobushushu, umxholo ogciniweyo we-austenite wesampulu ye-IH ungaphezulu kwalowo we-FH. Kubushushu obushushu be-400 ° C, iqhezu lobunzima be-austenite egcinwe kwi-FH ingaphantsi kwe-1%, ngelixa elidala liyi-2.7%. Xa amaqondo obushushu asezantsi engaphantsi kwe-600 ℃, iqhezu le-austenite eligciniweyo aliyi kuba ngaphantsi kwe-1%. Umahluko kule nkqubo yokubila ngenxa yeendlela ezahlukeneyo zokufudumeza yenye yeempawu zempembelelo yoqheliso.

4) Ubudlelwane phakathi kwendlela yokunyanga ubushushu kunye neepropathi zoomatshini. Ukwenzela ukuthelekisa iipropathi zoomatshini zeesampulu ze-IH kunye ne-FH, ubudlelwane phakathi kwamandla, ubungqingqwa, ubulukhuni kunye nobulukhuni obufunyenwe kwiimvavanyo ezahlukeneyo zoomatshini zashwankathelwa, kwaye iziphumo zezi zilandelayo:

Amandla okuqina, ukuvelisa amandla kunye namandla okucheba konke ukunyuka ngokunyuka kobunzima (umahluko phakathi kwe-IH kunye ne-FH awukho mkhulu). Ukongeza, nokuba iipateni zoxinzelelo lomthwalo zahlukile, umyinge wamandla okucheba kumandla okuqina uyahluka phantse kuluhlu lwe-0.6 ukuya kwi-0.7, ke umahluko kwindlela yotshintsho lwamandla obawo mncinci kakhulu.

Ngabo nabuphi na ubunzima, ubukho beplastikhi kunye nobulukhuni besampulu ye-IH buphezulu kunezo zesampulu ye-FH. Sebenzisa i-IH ukonyusa umyinge weplastikhi, ubude emva kokuqhekeka yi-10%, ukunciphisa indawo ngama-30%, kwaye ezinye ziphezulu njenge-70%. Ke ngoko, xa kuthelekiswa nesampulu ye-FH, isampulu ye-IH inee-grains ezintle kunye namandla amakhulu kunye nobulukhuni. Emva kobushushu obushushu obuphezulu, isampulu iqulethe i-austenite egcinwe ngakumbi, enokuphucula ukubumbana kunye nobulukhuni bentsimbi. ; Xa obu bunzima bobabini bufana, i-IH iyakhawuleza kunye nexesha elifutshane ukufudumeza, ngenxa yoko iqondo lobushushu lobushushu liphezulu kune-FH.

Ngamafutshane, ukusebenza kwesampulu ephathwe nge-IH kubhetele kunesampulu ye-FH. Kufuneka iqatshelwe ukuba ngenxa yexesha lokukhawulezisa kunye nexesha elifutshane lokungenisa umoya, iqondo lobushushu lobushushu liphezulu kakhulu kunasekuvutheni komlilo nge-100-130 ° C. Xa kuthelekiswa nokubila kwiziko, ukuzicaphukisa kwandisa ubushushu ngakumbi.