Mapfumbamwe Makuru Matambudziko muStainless Simbi Welding
1. Chii chinonzi Stainless simbi uye acid inodzivirira Stainless simbi?
Mhinduro: Zviri mukati mechinhu chikuru "chromium" mumidziyo yesimbi (pamwe nekuwedzera kwezvimwe zvinhu zvakaita senickel uye molybdenum) inogona kugadzira simbi mune passive state uye ine hunhu husina tsvina. Asidhi isingadziviriri simbi inoreva simbi inoshingirira mukuora mumidhiya yakasimba inoodza senge acid, alkali, nemunyu.
2. Chii chinonzi austenitic simbi isina tsvina? Ndeapi magiredhi anowanzoshandiswa?
Mhinduro: Austenitic simbi isina tsvina ndiyo inonyanya kushandiswa uye ine yakakura siyana. Semuyenzaniso:
18-8 series: 0Cr19Ni9 (304) 0Cr18Ni8 (308)
18-12 dzakatevedzana: 00Cr18Ni12Mo2Ti (316L)
25-13 series: 0Cr25Ni13 (309)
25-20 akatevedzana: 0Cr25Ni20, nezvimwe
3. Sei pane imwe nhanho yekuomerwa kwehunyanzvi mukushongedza simbi isina tsvina?
Mhinduro: Iyo huru muitiro kuoma ndeyekuti:
1) Simbi isina tsvina ine simba rekunzwa kwekupisa, ine nguva yakati rebei yekugara munzvimbo yetembiricha ye450-850 ℃, zvichikonzera kudzikira kwakanyanya mukudzivirirwa kwekuora kwema welds uye nzvimbo dzakakanganiswa nekupisa.
2)Inowanzo putika kupisa.
3) Kudzivirirwa kwakashata uye yakanyanya kupisa-tembiricha oxidation.
4)Iyo coefficient yekuwedzera kwemutsara yakakura, zvichikonzera kukanganisa kwakakosha welding.
4. Sei nhanho dzinoshanda dzakakosha pakushongedza austenitic Stainless simbi?Mhinduro: General process matanho anosanganisira:
1)Kunyatso sarudza welding zvinhu zvichibva pane kemikari yezvigadziko.
2)Small current, Quick welding; Simba remutsetse diki rinoderedza kupisa.
3) Mutete dhayamita welding wire uye electrode, isingazungunuke, yakawanda-layer uye yakawanda pass welding.
4) Kumanikidzirwa kutonhora kwewelds uye kupisa kwakakanganisika nzvimbo kuderedza nguva yekugara pa450-850 ℃.
5)TIG welding seam kumashure argon kudzivirira.
6)Musono we weld wasangana necorrosive medium inozopedzisira yaiswa weld.
7)Pasivation kurapwa kwewelds uye kupisa kwakakanganiswa nzvimbo.
5. Sei zvakakosha kushandisa 25-13 dzakatevedzana welding waya uye electrode pakutungidza austenitic Stainless simbi, kabhoni simbi, uye yakaderera-alloy simbi (dissimilar simbi welding)?
Mhinduro: Pamajoini esimbi akasiyana-siyana anobatanidza austenitic stainless simbi nekabhoni simbi uye yakaderera-alloy simbi, simbi yakaiswa yeweld inofanira kushandisa 25-13 series welding waya (309, 309L) uye welding rods (Ao312, Ao307, etc.) . Kana mamwe masimbi esimbi esimbi akashandiswa, chimiro chemartensitic chinogadzirwa pamutsetse wekubatanidza wekabhoni simbi uye yakaderera-alloy simbi, izvo zvinozoita kuti kutonhora kutsemuka.
6. Sei gasi rinodzivirira re98% Ar + 2% O2 rinoshandiswa kune yakasimba Stainless steel welding wire?
Mhinduro: Paunenge uchishandisa yakasimba Stainless simbi waya MIG welding, kana yakachena argon gasi dziviriro yakashandiswa, tension yepamusoro yedziva yakanyungudutswa yakakwirira, kuumbwa kwe weld kwakashata, uye weld chimiro "hunchback". Wedzera 1-2% okisijeni kuti uderedze kusawirirana kwepasi kwedziva rakanyungudutswa, zvichikonzera kugadzirwa kwakatsetseka uye kunofadza kwe weld.
7. Sei pamusoro pesimbi yakasimba isina simbi inonamira waya yeMIG weld ichishanduka kuita dema?
Mhinduro: Solid Stainless Stainless wire MIG welding ine kukurumidza welding speed (30-60cm/min), uye inodzivirira gasi nozzle yakatomhanya kumberi kwakanyungudutswa dziva nzvimbo. Iyo weld ichiri munzvimbo dzvuku inopisa tembiricha yepamusoro, yakazadzwa nemhepo, uye pamusoro inogadzira maokisi, zvichiita kuti weld iite dema. Iyo pickling passivation nzira inogona kubvisa ganda dema uye kudzoreredza yepakutanga pevhu ruvara rwesimbi isina tsvina.
8. Nei yakasimba Stainless Stainless welding wire ichida pulsed power supply kuti iwane jet transition uye splash free welding?
Mhinduro: Paunenge uchishandisa simbi yakasimba yesimbi yeMIG welding, ine dhayamita ye1.2 waya, jet shanduko inogona kuwanikwa chete kana ikozvino I ≥ 260-280A; Madonhwe ari pasi pehukoshi uhwu anoonekwa seshanduko yepfupi-yedunhu, nekupfapfaidza kwakakosha uye kazhinji haigone kushandiswa. Chete nekushandisa pulsed MIG simba rekupa ine pulse ikozvino yakakura kupfuura 300A inogona pulse droplet shanduko inowanikwa pasi pewelding currents ye80-260A isina spatter welding.
9. Sei CO2 gasi shielding inoshandiswa flux cored Stainless steel welding waya? Haudi here magetsi ane pulses?
Mhinduro: Parizvino, inowanzoshandiswa flux cored stainless steel welding wires (se308, 309, etc.) ine flux formula yakagadzirwa yakavakirwa pane welding kemikari metallurgical reaction inogadzirwa pasi pe CO2 gasi kuchengetedzwa, saka haigone kushandiswa kune MAG kana MIG welding. ; Pulse arc welding magetsi masosi haigone kushandiswa.