Ko Corrosion{0}}inodzivirirwa Sei Nemavhiri Emaoko Emavhiri?

Mundima yeindasitiri, mavharuvhu ndiwo akakosha ekudzora zvikamu mumasisitimu ekuunza mvura, uye kuvimbika kwekuita kwavo kwakakosha. Valve Hand Wheels inokosha midziyo yekushanda mavharuvhu, uye kushorwa kwekuora kwezvinhu zvavo kunobata zvakananga hupenyu hwebasa revhavha, kugadzikana kwekushanda, uye kuchengetedzwa kwehurongwa hwose.

Tafura yezviri mukati

1. Kurongwa kwezvinhu zvakajairika zveValve Hand Wheels

2. Muedzo wekupokana kwekupokana kweValve Hand Wheels zvinhu munzvimbo dzakasiyana dzeindasitiri

3. Nzira dzekuyedza uye data kuenzanisa kwezvinhu zvinoramba corrosion

4. Matanho ekuvandudza corrosion resistance yeValve Hand Wheels zvinhu

5. Mhedziso

1. Kurongwa kwezvinhu zvakajairika zveValve Hand Wheels

●Simbi

Carbon steel: Carbon steel chinhu chakajairika uye chine mutengo wakaderera-. Munzvimbo dzakaoma uye-zvisina corrosive media, carbon steelvharafu maoko mavhiriinogona kuchengetedza yakanaka mechanical properties uye chitarisiko. Nekudaro, kana ichinge yaiswa mumhepo yakanyorova, mvura uye inoparadza makemikari media, kabhoni simbi iri nyore kuita oxidize uye kuburitsa ngura, iyo inokanganisa kutaridzika kwevhiri reruoko. Muzviitiko zvakakomba, zvinogona kutoderedza simba rayo remagetsi uye kukonzera kukundikana kwekushanda. Semuyenzaniso, mune dzimwe nzvimbo dzekuchengetera zvinhu dzine hunyoro hwepamusoro, mavhiri emaoko ecarbon steel asina kumboitwa anti{3}}corrosion treatment anogona kunge aine ngura dziri pachena mumwedzi mishoma.

Simbi isina simbi: Simbi isina tsvina inoshandiswa zvakanyanya mukugadzira mavhiri emaoko evharuvhu nekuda kwekusagadzikana kwayo kwegora. Dzakajairwa 304 Stainless steel uye 316 Stainless steel. 304 Stainless steel ine imwe mwero wecorrosion resistance uye inokwanisa kuramba simbi isina kusimba yakaita semhepo nemvura. Munzvimbo dzakajairwa dzemukati uye mamwe mamiriro eindasitiri ane yakaderera corrosion kuramba zvinodiwa, 304 simbi isina tsvina mavhiri emaoko anoita zvakatsiga. Nekudaro, munzvimbo dzine corrosive ions senge chloride ion, kushorwa kwayo kunopikiswa. Kusiyana neizvi, 316 simbi isina tsvina yakagadzirisa zvakanyanya kupikisa kwayo kune zvinosvibisa media semakloridi nekuda kwekuwedzera kwe molybdenum, uye inonyanya kushandiswa munzvimbo dzegungwa, maindasitiri emakemikari nemamwe maindasitiri. Muzvirimwa zvemakemikari munzvimbo dziri mumahombekombe egungwa, mavhiri emaoko evharuvhu akagadzirwa ne316 stainless steel anogona kuchengetedza kushanda kwakanaka kana paine{11}}nguva yakareba yakasangana nemhute yemumvura yegungwa uye nemishonga yemakemikari, uye hupenyu hwesevhisi hunogona kusvika makore akati kuti kana kutopfuura. .

Copper alloy: Copper alloy ine yakanaka thermal conductivity, magetsi conductivity uye kumwe kuramba kwecorrosion. Dzakajairika indarira nebhuronzi. Brass ine yakanaka corrosion resistance mumhepo yakapoteredza pasi, uye firimu reooxide rinoita pamusoro kudzivirira kuwedzera kukora. Nekudaro, mune mamwe ma acidic media, iyo corrosion resistance yendarira inoderera. Bronze ine nani mvura yegungwa corrosion resistance. Mumunda wekuvaka ngarava, ndariraHand Wheel In Valveanoshandiswa zvakanyanya kudzora mavharuvhu emvura yegungwa, anogona kurwisa kukukurwa kwemvura yegungwa uye kuona kuti-nguva yakareba yakagadzikana kushanda kwegadziriro yevharuvhu yengarava.

● Zvisiri-zvinhu zvesimbi

Purasitiki: Mavharuvhu Emaoko Mavhiri akagadzirwa epurasitiki ane zvakanakira uremu huremu, mutengo wakaderera, kuvharisa kwakanaka, nezvimwewo, uye zvakare anoratidza kunaka kwekusagadzikana mune mamwe makemikari media. Semuenzaniso, mavhiri emaoko akagadzirwa nepolypropylene (PP) ane kushivirira kwakanaka kune yakawanda acid, alkali, uye munyu mhinduro. Mune mamwe maindasitiri emakemikari, ezvekudya uye ezvinwiwa, anoshandiswa kudzora mavharuvhu eimwe mvura kana gasi midhiya isinganyanyi kukanganisa. Nekudaro, iyo mechanic simba yemidziyo yepurasitiki yakadzikira, uye zviri nyore kukanganisa munzvimbo dzakanyanya kupisa. Vanogona kuchembera kana vakavhenekwa nezuva kwenguva yakareba, zvichikanganisa hupenyu hwavo hwesevhisi uye kusaita ngura. .

Rubber: Zvishandiso zveRubber zvinowanzo shandiswa mune mamwe mavhiri emaoko evharuvhu anoda kuiswa chisimbiso kuri nani uye kuita buffering. Mushure mekunyungudutswa, rabha remusikirwo rine imwe piriviri yekuora kune isiri-oxidizing asidhi, alkali, nemunyu. Nekudaro, mune yakasimba oxidants (senge nitric acid, concentrated sulfuric acid, nezvimwewo), zvigadzirwa zvepetroleum, uye zvimwe organic zvinonyungudutsa, rabha ichazvimba, zera, uye zvimwe zviitiko, zvichikonzera kuderera kwekuita. Zvisinei, mune imwe tembiricha yakajairika, -isina corrosion system yemvura kana yakaderera-pressure gas systems, rubber hand wheel seals inogona kuita basa rinoshanda uye kuve nemwero wakati wekugona kuonda.

2. Muedzo wekupokana kwekupokana kweValve Hand Wheels zvinhu munzvimbo dzakasiyana dzeindasitiri

1. Chemical Indasitiri

Indasitiri yemakemikari inosanganisira akawanda anoparadza zvakanyanya makemikari media, akadai akasimba asidhi sesulfuric acid, hydrochloric acid, uye nitric acid, alkalis yakasimba senge sodium hydroxide, uye akasiyana munyu mhinduro. Munzvimbo yakadai, corrosion resistance ye valve hand wheel material yakakwira zvakanyanya. Semuenzaniso, mumusangano wekugadzira sulfuric acid, vharuvhu inoda kuvhurwa uye kuvharwa kazhinji kudzora kuyerera kwe sulfuric acid. Kana carbon steel hand vhiri rikashandiswa, rinokurumidza kusvibiswa ne sulfuric acid, zvichikonzera kutadza kushanda zvakanaka. Panguva ino, simbi yakakwira alloy (senge simbi isina simbi ine high chromium uye nickel yakakwira) kana zvinhu zvakakosha zvinodzivirira -kuora zvinoshandiswa kugadzira mavhiri emaoko kuti aenderane nezvinodiwa zvekushandisa kwenguva refu-. Zvinoenderana nehuwandu hwakakodzera, muindasitiri yemakemikari, mutengo wekugadzirisa mavharuvhu kana kutsiva nekuda kwekusakwana kwekushomeka kwekushomeka kwezvinhu zvinoverengera 30% - 40% yezvese mari yekugadzirisa midziyo. .

2. Marine industry

Nzvimbo yegungwa inoratidzwa nemunyu wakanyanya, hunyoro hwepamusoro, uye kukukurwa kwemvura yegungwa. Pazvikepe, chirongwa chevhavha chinoda kushandiswa nguva dzose kuti chidzore kupinda uye kubuda kwemvura yegungwa, mutemo wemvura ye ballast, nezvimwewo. Semuyenzaniso, pachikepe chidiki chisina kutora matanho akakodzera ekudzivirira-kuora, carbon steel Valve Hand Wheels yakange ine makomba makuru ekuora pamusoro mushure mehafu yegore yekushandiswa, zvichiita kuti zviome kwazvo kushanda. Zvisinei, mavhiri emaoko akagadzirwa nebhuronzi kana 316 simbi isina tsvina anogona kushandiswa zvakatsiga munzvimbo yegungwa kwemakore akati wandei, achivandudza zvakanyanya kuvimbika uye hupenyu hwebasa revhavha system yechikepe. Muzvivakwa zvakakura senge mapuratifomu ekumahombekombe, izvo zvinopokana necorrosion yemidziyo yevharuvhu handwheel zvinhu zvakanyanya kuomarara. Pamusoro pekushandisa{{8}kukoromoka kwemhando yepamusoro-zvesimbi isingadziviriri, mamwe marapirwo anodzivirira{10}kukoromoka kwecorrosion coating anoitwawo kuti pave nekushanda kwakagadzikana kwenguva refu munzvimbo dzakaoma dzemugungwa. .

3. Indasitiri yechikafu nechinwiwa

Indasitiri yechikafu nezvinwiwa ine zvinodikanwa zvakanyanyisa zvehutsanana, uye mamwe maitiro ekugadzira anozosanganawo nezvimwe zvinopisa media, sezvinwiwa zvine acidic, detergents, nezvimwe. Munzvimbo ino,Gate Valve Hand Wheelhaifanirwe kungove negora rakanaka rekudzivirira, asi zvakare kusangana nehutsanana hwekudya uye chengetedzo zviyero. Zvigadzirwa zvepurasitiki (zvakadai sePP, PE, nezvimwewo zvinosangana nezviyero zvegiredhi rekudya) uye simbi isina tsvina inoshandiswa zvakanyanya muindasitiri iyi. Zvigadzirwa zvepurasitiki zvinogona kurwisa zvinobudirira kubva kune zvinwiwa zvine acidic uye hazvikonzerese kukura kwebhakitiriya; simbi isina tsvina ine yakanaka corrosion resistance uye hutsanana, uye pamusoro pacho pakatsetseka uye nyore kuchenesa.

3. Nzira dzekuyedza uye data kuenzanisa kwezvinhu zvinoramba corrosion

●Kuedza kupfapfaidza munyu

Munyu wekupfapfaidza bvunzo inzira inowanzo shandiswa yekuyedza kuonda kwekupokana kwezvinhu. Mune imwe tembiricha (kazhinji 35 madhigirii), humidity yakaenzana (ingangoita 95%), uye kusangana kwemunyu wekupfapfaidza (kunyanya NaCl), zvinhu zvekuyedzwa zvinoongororwa kuti zviwane kusakara kwayo kwemunyu wekupfapfaidza. Izvi zvinotevera kuenzanisa kweimwe data kubva kumunyu wekupfapfaidza bvunzo pane akati wandei akajairwa Valve Hand Wheels zvinhu

Iyo data inoratidza kuti munzvimbo yemunyu yekupfapfaidza bvunzo nharaunda, iyo corrosion kuramba yezvinhu zvakasiyana inosiyana zvakanyanya. Carbon simbi ine yakaipisisa corrosion resistance, uye kukomba kwakakomba kunoitika munguva pfupi; 304 simbi isina tsvina uye ndarira zvine kumwe kupikisa kusimba, asi kana zvichienzaniswa ne316 simbi isina tsvina uye polypropylene (PP), kusadzivirirwa kwavo kwekuora kuchiri chinhambwe; 316 simbi isina tsvina uye polypropylene (PP) inoratidza kumira zvakanaka kumunyu wekupfapfaidza ngura, kunyanya polypropylene (PP), iyo inenge isina shanduko iri pachena mukuedzwa kwenguva refu-kupfapfaidza munyu. .

● Kemikari yepakati kunyudzwa bvunzo

Kuti tinyatso tevedzera makemikari vezvenhau kutiRuoko Wheel In Stop Valvezvinoratidzwa munzvimbo dzakasiyana dzeindasitiri, makemikari epakati kunyudzwa bvunzo anoitwa zvakare. Mazhinji akajairika makemikari media anosarudzwa, akadai se5% sulfuric acid solution, 10% sodium hydroxide solution, 3% sodium chloride solution, zvichingodaro, uye masampu ehandwheel ezvishandiso zvakasiyana anonyudzwa mazviri kuti vaone mamiriro avo ekuora. Izvi zvinotevera kuita kwezvimwe zvinhu mushure mekunyudzwa mune akasiyana makemikari media kweimwe nguva yenguva:

Iyo data inoratidza kuti mukunyudza mumidhiya yemakemikari akasiyana, 316 simbi isina tsvina uye polypropylene (PP) ichiri kuratidza kusaita ngura kwakanaka, uye pakanga pasina ngura iri pachena yakaitika mune zvakasiyana-siyana zvemakemikari media{1}} simbi isina tsvina yaive neimwe corrosion mumushonga wesulfuric acid uye sodium chloride mhinduro, asi dhigirii rekabhoni corrosi yaive dhigirii resimbi yesimbi. Simbi yekabhoni yakaratidza kuora kwakakomba mune ese matatu emakemikari media, izvo zvinoratidza kuti haina kukodzera sechinhu chevharuvhu mavhiri emaoko munzvimbo inoparadza kemikari yepakati.

4. Matanho ekuvandudza corrosion resistance yeValve Hand Wheels zvinhu

1. Kugadzirisa kusarudzwa kwezvinhu

Zvinoenderana nenzvimbo dzakasiyana dzekushandisa uye hunhu hwemidhiya, kiyi yekuvandudza kushorwa kwemavhiri emaoko evharuvhu kusarudza zvine musoro zvinhu zvemavhiri emaoko. Munzvimbo dzine corrosion yakanyanya, zvinhu zvine corrosion resistance inodiwa. Semuenzaniso, mune yakasimba asidhi uye alkali nharaunda yemakemikari indasitiri, yakakwirira alloy simbi kana yakakosha alloy zvinhu zvinosarudzwa; munzvimbo dzemugungwa, 316 simbi isina tsvina, bhuronzi uye zvimwe zvinhu zvinopesana nekuora kwemvura yegungwa zvinoshandiswa; muindasitiri yechikafu nechinwiwa, mapurasitiki kana simbi isina tsvina inoenderana nehutsanana hwechikafu uye ine kumwe kuramba kwecorrosion inosarudzwa. .

2. Kushandisa tekinoroji yekurapa kwepamusoro

Coating treatment: Kupfekedza pamusoro pemavhiri emaoko evharuvhu inzira yakajairika yekuvandudza corrosion resistance. Semuyenzaniso, kupisa-kunamatidza kwedip galvanizing kunogona kuita zinc layer pamusoro pemavhiri emaoko ekabhoni simbi, zvichinyatsoparadzanisa mhepo nemvura uye kuita kuti isaora. Kupisa-dip galvanizing coating inoshandiswa zvakanyanya pane zvimweWheel Yakasimba Yeruokoinoshandiswa kunze, iyo inogona kuwedzera hupenyu hwebasa remavhiri emaoko ne2-3 nguva. Mukuwedzera, kune epoxy coatings, polyurethane coatings, nezvimwewo. Aya machira ane adhesion yakanaka uye chemical corrosion resistance, iyo inogona kupa humwe kudzivirirwa kwemavhiri emaoko.

Electroplating: Electroplating zvakare inowanzoshandiswa pamusoro pekurapa tekinoroji. Kuburikidza neelectroplating, dhizaini yesimbi ine yakanaka corrosion resistance, senge chrome plating, nickel plating, nezvimwewo, inogona kuiswa pamusoro pesimbi. Iyo chrome plating layer ine zvakanakira kuomarara kwepamusoro, kupfeka kwakanaka kuramba, uye kwakasimba corrosion kuramba, iyo inogona kuvandudza zvakanyanya kutaridzika kwemhando uye kushorwa kwegumbo reruoko. Mune dzimwe nguva apo zvinodikanwa zvekutaridzika zvakakwirisa uye imwe mwero yekudzivirira kwecorrosion inodiwa, chrome-Plated mavharuvhu emaoko mavhiri anoshandiswa zvakanyanya. .

3. Kugara uchigadzirisa uye kutarisira

Kugara uchigadzirisa uye kutarisira mavhiri emaoko evharuvhu anogona kuona nenguva uye kubata neanogona kukanganisa matambudziko uye kuwedzera hupenyu hwavo hwebasa. Semuenzaniso, gara uchichenesa handwheel kubvisa tsvina, guruva uye corrosive media inogona kusungirirwa pamusoro; tarisa kana pane zviratidzo zvekuora pamusoro pevhiri remaoko. Kana ngura shoma yawanikwa, igadzirise nenguva, sekuiisa nejecha nejecha uye wozoipfekedzazve-. Mune dzimwe nzvimbo dzakakura dzeindasitiri, chirongwa chakadzama chekugadzirisa valve chichagadzirwa, uye kunewo mitemo yakajeka uye nzira dzekushanda dzekuchengetedza handwheel kuitira kuti nguva yakareba{4}}ishande yakagadzikana yevhavha system.

5. Mhedziso

The corrosion resistance ofValve Hand Wheelszvinhu zvine hukama nemhedzisiro yavo yekushandisa mumaindasitiri akasiyana. Kuburikidza nekuongorora kusaita ngura kwesimbi dzakajairwa uye zvisiri-zvinhu zvesimbi uye bvunzo dzezvakatipoteredza dzemaindasitiri akasiyana, zvinogona kuonekwa kuti kusarudzwa kwezvinhu zvine musoro, kushandisa tekinoroji inoshanda yekurapa pamusoro, uye kugadzirisa nguva dzose ndiyo kiyi yekuvandudza kusaora kwadzo. Nekuvandudza tekinoroji yeindasitiri, izvo zvinodikanwa zvekupokana kwekuora kweValve Hand Wheels zvinhu zviri kuwedzera zvishoma nezvishoma. Mapato akakodzera anofanirwa kufambirana nekufambira mberi kwesainzi yemidziyo uye kugadzira zviri nani kusaonda{4}}zvinhu zvisingaite kuti zvizadzise zvinodiwa neindasitiri uye kubatsira indasitiri kusimukira nemazvo uye zvakadzikama.