Isesengura ryibigize sima yashizwemo

Kimwe nibicuruzwa byose byakozwe n'abantu, gukora ibyuma bikozwe mucyuma biremereye bigomba kubanza gukemura ikibazo cyibikoresho fatizo, ni ukuvuga kugena imiterere na formula yibikoresho byicyuma. Ibyinshi mubyuma byubu bikozwe muri karbide ya sima, igizwe ahanini na tungsten karbide (WC) na cobalt (Co). WC ni agace gakomeye mu cyuma, kandi Co irashobora gukoreshwa nkigikoresho cyo gushushanya icyuma.

Inzira yoroshye yo guhindura imiterere ya karbide ya sima ni uguhindura ingano yubunini bwa WC bwakoreshejwe. Ingano nini (3-5 μ m) Ubukomere bwibikoresho bya sima ya sima byateguwe na WC ibice hamwe na C% ni bike kandi byoroshye kwambara; Ingano ntoya (＜ 1 μ m) Ibice bya WC birashobora kubyara ibikoresho bikomeye bivanze hamwe nuburemere bukomeye, birwanya kwambara neza, ariko kandi n'ubugome bukabije. Mugihe cyo gutunganya ibikoresho byicyuma hamwe nuburemere bukabije, gukoresha ingano nziza ya sima ya karbide yinjizwamo bishobora kugera kubisubizo byiza. Ku rundi ruhande, ingano nini ya sima ya karbide igikoresho gifite imikorere myiza mugukata rimwe na rimwe cyangwa ubundi buryo bwo gukora busaba ubukana bwigikoresho.

Ubundi buryo bwo kugenzura ibiranga carbide yashizwemo ni uguhindura igipimo cya WC kubirimo. Ugereranije na WC, ubukana bwa Co buri hasi cyane, ariko gukomera nibyiza. Kubwibyo, kugabanya ibiri muri Co bizavamo gukomera gukomeye. Byumvikane ko, ibyo byongeye kubyutsa ikibazo cyo kuringaniza byuzuye - ibyuma byo hejuru birakomeye birwanya kwambara neza, ariko ubugome bwabo nabwo burakomeye. Ukurikije ubwoko bwihariye bwo gutunganya, guhitamo ingano ya WC ikwiye hamwe nigipimo cya Co bisaba ubumenyi bwa siyansi hamwe nuburambe bukomeye bwo gutunganya.

Ukoresheje tekinoroji ya tekinoroji yibikoresho, ubwumvikane hagati yimbaraga nubukomezi bwicyuma birashobora kwirindwa kurwego runaka. Iri koranabuhanga, ryakoreshejwe cyane n’abakora ibikoresho bikomeye ku isi, rikubiyemo gukoresha igipimo kinini cya Co kiri mu gice cy’inyuma cy’icyuma kuruta mu gice cyimbere. By'umwihariko, urwego rwinyuma rwicyuma (uburebure bwa 15-25 μ m) Ongera Co ibirimo kugirango utange imikorere isa na "zone buffer", kugirango icyuma gishobora kwihanganira ingaruka runaka kitavunitse. Ibi bifasha igikoresho cyumubiri kugirango kibone ibintu byiza byiza bishobora kugerwaho gusa ukoresheje karbide ya sima ifite imbaraga nyinshi.

Iyo ingano yubunini, ibihimbano nibindi bikoresho bya tekinike yibikoresho fatizo bimaze kugenwa, inzira nyayo yo gukora yo guca insimburangingo irashobora gutangira. Ubwa mbere, shyira ifu ya tungsten ihuye, ifu ya karubone nifu ya cobalt mu ruganda rufite ubunini bungana n’imashini imesa, usya ifu kugeza ku ntera isabwa, hanyuma uvange ibikoresho byose neza. Mugihe cyo gusya, inzoga namazi byongewemo kugirango bategure umukara mwinshi. Noneho ibishishwa bishyirwa mumashanyarazi ya cyclone, hanyuma amazi yo mumashanyarazi arahumuka kugirango abone ifu yuzuye kandi abitswe.

Muburyo bukurikira bwo kwitegura, prototype yicyuma irashobora kuboneka. Ubwa mbere, ifu yateguwe ivanze na polyethylene glycol (PEG). Nka plasitike, PEG irashobora guhuza by'agateganyo ifu hamwe nifu. Ibikoresho noneho bikanda muburyo bwicyuma mugupfa. Ukurikije uburyo butandukanye bwo gukanda, icyuma kimwe gishobora gukoreshwa mugukanda, cyangwa gukanda kwinshi birashobora gukoreshwa kugirango ukande imiterere yicyuma uhereye kumpande zitandukanye.

Nyuma yo kubona icyuma gikanda, gishyirwa mu itanura rinini kandi ryacumuye ku bushyuhe bwinshi. Muburyo bwo gucumura, PEG irashonga hanyuma igasohoka ivanze na bilet, hasigara igice cya kabiri cya sima ya karbide. Iyo PEG yashonga, icyuma kigabanuka kugeza mubunini bwacyo bwa nyuma. Iyi ntambwe isaba kubara neza imibare, kubera ko kugabanuka kwicyuma kiratandukanye ukurikije ibintu bitandukanye hamwe nibipimo bitandukanye, kandi kwihanganira ibipimo byibicuruzwa byarangiye birasabwa kugenzurwa muri microne nyinshi.