Xa kuthelekiswa nentsimbi eqhelekileyo,intsimbi ekhethekileyoUnamandla aphezulu kunye nobunzima, iipropathi zomzimba, iipropathi zekhemikhali, i-biomatise kunye nenkqubo yokusebenza. Kodwaintsimbi ekhethekileyoineempawu ezahlukeneyo ezivela kwintsimbi eqhelekileyo. Kwintsimbi eqhelekileyo abantu abaziqonda ngakumbi, kodwa kwiimpawu zeintsimbi ekhethekileyo, abantu abaninzi bathi badidekile. Ke, eli nqaku lilandelayo ligxile kwiimpawu zeizitya ezikhethekileyo.
Iimpawu zentsimbi ekhethekileyo:
Xa kuthelekiswa nentsimbi eqhelekileyo,intsimbi ekhethekileyoIneempawu zokucoceka okuphezulu, ukufana okuphezulu, ubume obulungileyo kunye nokuchaneka okuphezulu:
(1)Ucoceko oluphezulu.Umxholo wegesi kunye nenqanaba elibandakanya i-themaquints yensimbi kunye nendawo ephantsi yokunyibilika) kwintsimbi inokuncitshiswa. Xa ubunyulu bensimbi yonyuswe kumda othile, hayi kuphela iipropathi zokuqala zensimbi zinokuphuculwa kakhulu, kodwa neepropathi ezintsha zensimbi zinokuncitshiswa. Umzekelo, umxholo weoksijini xa intsimbi incitshisiwe ukusuka nge-30 × 10-6 ukuya kwi-5 × 10 × 10 × 10 × 10 × 10 × 10 × 10-6, kwaye ubomi oburhabaxa bunyuswe ngamaxesha angama-30. Izityholo ezingenasiseko zendalo iphela azikhuselekanga kuxinzelelo loxinzelelo xa umxholo we-phosphorus uncitshisiwe kwi-3 × 10-6. Ekupheleni kwenkulungwane yama-20, inqanaba lokufumana ubuhle (10) lentsimbi enokufezekiswa yimveliso yobuninzi yile: I-Hydrogen ≤10, i-rasfuge ≤10, phosphon ≤15, phosphorus ≤25.

(2) Iyunifomu ephezulu.Ukuqulunqwa kwentsimbi kukhokelela kwisakhiwo esingalinganiyo kunye neepropathi zentsimbi, esikwesinye sezizathu ezibalulekileyo zokungasebenzi kwentsimbi kunye nobunzima bokusebenzisa ngokupheleleyo iipropathi zensimbi. Itekhnoloji yemveliso yanamhlanje kufuneka yenze ukufana kwentsimbi yensimbi: I-Carlical Carlive Steelity ye-± 3hRC; Umxholo wekhabhoni, uNickel, Molybdenum ≤ ≤ ± 0.01%, kunye ne-manganese kunye ne-chromium ≤ ± 0.02% zilawulwa ngokuchanekileyo. Ubungakanani beenkozo zentsimbi ethwele intsimbi emva kokucinywayo buyi-sperical kwaye ubungakanani obuguquguqukayo buyi-0.8 ± 0.2 μm. Iipropathi zoomatshini bensimbi yokunganyangeki yensimbi (i-Z-intsimbi) kwi-Lostnitudinal, eguqukayo kunye nobubanzi beplastiki, ngakumbi iplastiki kunye neemfuno zobukrakra kunye neemfuno ezinzima kunye nezidima zilingana ngokubanzi.
(3) Isakhiwo se-Ultra.Ukomeleza komeleliso lobuqiniso lobuqiniso kuphela kwendlela eyomeleza enokwandisa amandla entsimbi ngaphandle kokuncipha okanye ukhulisa ubunzima obukhulu. Umzekelo, xa ubungakanani beenkozo zensimbi ye-Stainess Africasf77 ziyicociwe ukusuka kwi-60μm ukuya kwi-2,3 m, ukuqina kwengqwanga ye-kic kunyuka ukusuka kwi-100 ukuya kwi-220Mpa m. Iqondo lobushushu elinomvuzo we-Coarded-Grainect Pleines kwinqanawa yoxinzelelo lwenyukliya i-150 ~ 250 ℃ ngelixa intsimbi enemigangatho ye-50 ~ 70 ℃. Xa ubukhulu be-carbide ethwele intsimbi kulungile kwi-≤0.5μm, ubomi obuthwala buya kuphuculwa kakhulu.
(4) Ukuchaneka okuphezulu. Izitya ezikhethekileyokufanele ukuba ube nomgangatho osemgangathweni osemgangathweni kunye noxinzelelo olunqamlezileyo. Ukuchaneka kwe-rod eshushu eshushu inyuke i- ± 0.1MMM, ukunyamezelana kwe-Doubles eshushu ye-COOLD i-± 0.00mm, kunye ne-0.003mm.