Icyuma gifunga umupira wa valve inzira yo gukomera

Ⅰ.Incamake

Mu mashanyarazi y’amashyanyarazi, sisitemu ya peteroli, amazi menshi cyane y’inganda mu nganda z’amakara y’amakara, amazi avanze n’umukungugu n’ibice bikomeye, hamwe n’amazi yangirika cyane, imipira y’umupira igomba gukoresha ibyuma bifunga ibyuma bifunze cyane, bityo rero hitamo ibyuma bikwiye bifunze cyane. imipira.Gukomera kwumupira nintebe yumupira wumupira ni ngombwa cyane.

Ⅱ.Uburyo bukomeye bwumupira nintebe yicyuma gifunze umupira wa valve

Kugeza ubu, uburyo bukoreshwa muburyo bukomeye bwo gukomera hejuru yicyuma gikomeye gifunga imipira ya valve imipira ikubiyemo ibi bikurikira:

. gusudira gusudira biroroshye guhindura ibice.Inzira yo gukomera ikoreshwa cyane.

.Igice cya chrome gifite plaque gifite ubukana bwinshi, kwambara birwanya, kwangirika kwangirika kandi birashobora gutuma ubuso bumera igihe kirekire.Inzira iroroshye kandi igiciro ni gito.Nyamara, ubukana bwa plaque ya chrome izagabanuka vuba bitewe no kurekura imihangayiko yimbere mugihe ubushyuhe bwiyongereye, kandi ubushyuhe bwakazi ntibushobora kuba hejuru ya 427 ° C.Mubyongeyeho, imbaraga zo guhuza urwego rwa chrome zometse hasi ni nkeya, kandi isahani ikunda kugwa.

.Bitewe no kutangirika kwangirika kwa plasma nitriding yo kuvura bigoye, ntishobora gukoreshwa mumirima ya ruswa ikomeye.

.Gutera HVOF nuburyo bwibanze bwo gutunganya hejuru yumurongo.Ubu buryo bwo gukomera bukoreshwa cyane cyane mu mashanyarazi y’amashyanyarazi, sisitemu ya peteroli, amavuta y’amazi menshi mu nganda z’amakara y’amakara, amazi avanze n’umukungugu n’ibice bikomeye, hamwe n’amazi yangirika cyane.

Uburyo bwo gutera imiti ya supersonic nuburyo bukoreshwa muburyo bwo gutwika amavuta ya ogisijeni bitanga umuvuduko mwinshi wo mu kirere kugirango byihute ifu yifu kugirango ikubite hejuru yikintu kugirango ikore igipfundikizo cyuzuye.Mugihe cyibikorwa byingaruka, kubera umuvuduko wihuta (500-750m / s) hamwe nubushyuhe buke (-3000 ° C), imbaraga zihuza cyane, ubukana buke hamwe na oxyde nkeya irashobora kuboneka nyuma yo gukubita hejuru yikigice .gutwikira.Ikiranga HVOF ni uko umuvuduko wa porojeri yifu irenze umuvuduko wijwi, ndetse inshuro 2 kugeza kuri 3 umuvuduko wijwi, naho umuvuduko wumwuka wikubye inshuro 4 umuvuduko wijwi.

HVOF nubuhanga bushya bwo gutunganya, uburebure bwa spray ni 0.3-0.4mm, igipfundikizo hamwe nibigize bifitanye isano ya mashini, imbaraga zo guhuza ni nyinshi (77MPa), kandi ububobere buke ni buke (<1%).Ubu buryo bufite ubushyuhe buke kubice (<93 ° C), ibice ntabwo byahinduwe, kandi birashobora guterwa ubukonje.Iyo utera, umuvuduko wifu wifu ni mwinshi (1370m / s), nta karere katewe nubushyuhe, imiterere nimiterere yibice ntabwo bihinduka, gukomera kwinshi ni hejuru, kandi birashobora gutunganywa.

Gusudira gusasa ni uburyo bwo kuvura amashyuza hejuru yibikoresho byicyuma.Ashyushya ifu (ifu yicyuma, ifu yivanze, ifu ya ceramique) kugeza kumashanyarazi yashizwemo cyangwa hejuru cyane binyuze mumasoko yubushyuhe, hanyuma ikayitera kumyuka yumuyaga ikayishyira hejuru yikigice cyabanje kuvurwa kugirango igire urwego hamwe ubuso bw'igice.(Substrate) ihujwe nigitambaro gikomeye (gusudira).

Muri spray yo gusudira no kugaragara hejuru yo gukomera, karbide ya sima na substrate byombi bigira uburyo bwo gushonga, kandi hari ahantu hashyushye hashyushye karbide ya sima na substrate bihurira.Agace nicyuma cyo guhuza hejuru.Birasabwa ko ubunini bwa karbide ya sima bugomba kuba burenze 3mm ukoresheje gusudira cyangwa gusasa.

Ⅲ. Ubukomezi bwo guhuza hagati yumupira nintebe yumupira wumupira ufunze

Icyuma kinyerera hejuru yubuso gikeneye kugira itandukaniro rikomeye, bitabaye ibyo biroroshye gutera gufatwa.Mubikorwa bifatika, itandukaniro rikomeye hagati yumupira wa valve nintebe ya valve muri rusange ni 5-10HRC, ituma umupira wumupira ugira ubuzima bwiza bwa serivisi.Bitewe no gutunganya ibintu bigoye hamwe nigiciro kinini cyo gutunganya, kugirango urinde urwego kwangirika no kwambara, ubukana bwurwego muri rusange burenze ubukomere bwintebe yintebe.

Hariho ubwoko bubiri bwikomatanya bukoreshwa cyane muburyo bwo guhuza ubukana bwumupira wa valve hamwe nintebe ya valve: hardUbukomere bwubuso bwumupira wa valve ni 55HRC, naho hejuru yintebe ya valve ni 45HRC.Alloy, iyi match ikomeye ni umukino ukoreshwa cyane muburyo bwo gukomera kumipira ifunze ibyuma, bishobora kuzuza ibisabwa bisanzwe byo kwambara byumupira wumupira ufunze;HardUbuso bukomeye bwumupira wa valve ni 68HRC, hejuru yintebe ya valve ni 58HRC, naho hejuru yumupira wa valve urashobora guterwa na karubide ya tungsten ya supersonic.Ubuso bwintebe ya valve burashobora gukorwa muri Stellite20 alloy ukoresheje spersonic spray.Ubu bukomere bukoreshwa cyane mu nganda zikora amakara kandi bufite imbaraga zo guhangana n’ubuzima bwa serivisi.

Ⅳ.Epilogue

Umupira wa valve hamwe nicyicaro cyicyuma gifunze umupira wikariso ifata inzira igoye yo gukomera, irashobora kugena neza ubuzima bwa serivisi nigikorwa cyicyuma gifunga ibyuma, kandi uburyo bukomeye bwo gukomera burashobora kugabanya ikiguzi cyo gukora.