Isi okwu itoolu na mgbado igwe anaghị agba nchara

1. Gịnị bụ igwe anaghị agba nchara na acid eguzogide igwe anaghị agba nchara?

Azịza: Ọdịnaya nke isi mmewere "chromium" na metal ihe (na mgbakwunye nke ihe ndị ọzọ dị ka nickel na molybdenum) nwere ike ime ka ígwè na a passive ala na nwere igwe anaghị agba nchara. Nchara na-eguzogide acid na-ezo aka nchara nke na-eguzogide corrosion na mgbasa ozi siri ike na-emebi emebi dị ka acid, alkali, na nnu.

2. Gịnị bụ austenitic igwe anaghị agba nchara? Kedu akara ule a na-ejikarị?

Azịza: Austenitic igwe anaghị agba nchara bụ nke a na-ejikarị ma nwee ụdị dị iche iche. Ọmụmaatụ:

Usoro 18-8: 0Cr19Ni9 (304) 0Cr18Ni8 (308)
18-12 usoro: 00Cr18Ni12Mo2Ti (316L)
Usoro 25-13: 0Cr25Ni13 (309)
25-20 usoro: 0Cr25Ni20, wdg

3. Gịnị mere e nwere a ụfọdụ larịị nke teknuzu isi ike na ịgbado ọkụ igwe anaghị agba nchara?

Azịza: Isi usoro siri ike bụ:
1) igwe anaghị agba nchara ihe nwere ike thermal uche, na a ubé ogologo oge obibi na okpomọkụ nso nke 450-850 ℃, butere a ịrịba mbelata corrosion iguzogide welds na okpomọkụ metụtara zones.
2) Ọ na-adịkarị mfe mgbawa thermal.
3) Nchekwa na-adịghị mma na oke okpomọkụ oxidation.
4) Ọnụ ọgụgụ nke mgbasawanye nke linear bụ nnukwu, na-ebute nrụrụ ịgbado ọkụ dị ịrịba ama.

4. Gịnị mere usoro jikoro dị irè dị mkpa maka ịgbado ọkụ austenitic igwe anaghị agba nchara?Azịza: General usoro jikoro gụnyere:
1) Họrọ nke ọma ihe ịgbado ọkụ dabere na ihe mejupụtara kemịkalụ nke isi ihe.
2) Obere ugbu a, ịgbado ọkụ ngwa ngwa; Obere ahịrị ike na-ebelata ntinye okpomọkụ.
3) Mkpa ịgbado ọkụ dayameta waya na electrode, na-abụghị swinging, multi-layer na multi pass ịgbado ọkụ.
4) Mmanye jụrụ nke welds na mpaghara okpomọkụ metụtara iji belata oge obibi na 450-850 ℃.
5) TIG ịgbado ọkụ onuete azụ argon nchebe.
6) The weld onuete na kọntaktị na corrosive ọkara na-emecha welded.
7) Passivation ọgwụgwọ nke welds na okpomọkụ metụtara zones.

5. Gịnị mere o ji dị mkpa iji 25-13 usoro ịgbado ọkụ waya na electrode maka ịgbado ọkụ austenitic igwe anaghị agba nchara, carbon ígwè, na ala alloy ígwè (dissimilar ígwè ịgbado ọkụ)?

Azịza: N'ihi na ịgbado ọkụ dissimilar ígwè nkwonkwo njikọ austenitic igwe anaghị agba nchara na carbon ígwè na ala alloy ígwè, na edebe metal nke weld ga-eji 25-13 usoro ịgbado ọkụ wires (309, 309L) na ịgbado ọkụ mkpara (Ao312, Ao307, wdg). . Ọ bụrụ na ejiri ihe mgbado ọkụ igwe anaghị agba nchara ọzọ, a ga-emepụta usoro martensitic n'ahịrị njikọ nke carbon steel na obere alloy, nke ga-ebute mgbawa oyi.

6. Gịnị mere a na-echebe gas nke 98% Ar + 2% O2 maka siri ike igwe anaghị agba nchara ịgbado ọkụ waya?

Azịza: Mgbe ị na-eji siri ike igwe anaghị agba nchara waya MIG ịgbado ọkụ, ma ọ bụrụ na ọcha argon gas nchebe na-eji, elu esemokwu nke a wụrụ awụ ọdọ mmiri dị elu, weld e guzobere adịghị mma, na weld udi bụ "hunchback". Tinye 1-2% oxygen iji belata esemokwu elu nke ọdọ mmiri a wụrụ awụ, na-eme ka ọkpụkpụ weld dị nro na nke mara mma.

7. Gịnị mere elu nke siri ike igwe anaghị agba nchara ịgbado ọkụ waya MIG weld agba oji?

Azịza: Igwe anaghị agba nchara siri ike MIG ịgbado ọkụ nwere a ngwa ngwa ịgbado ọkụ ọsọ (30-60cm/min), na nchebe nozulu agbaworị na n'ihu gbazee ọdọ mmiri ebe. Weld ahụ ka nọ na ọnọdụ okpomọkụ dị elu na-acha ọbara ọbara, nke ikuku na-eme ka ikuku na-eme ya, na elu na-emepụta oxides, na-eme ka weld ahụ ghọọ oji. Usoro ngafe nke pickling nwere ike wepu akpụkpọ ojii wee weghachi agba elu mbụ nke igwe anaghị agba nchara.

8. Gịnị mere siri ike igwe anaghị agba nchara ịgbado ọkụ waya chọrọ a pulsed ike ọkọnọ nweta jet mgbanwe na ikwommiri free ịgbado ọkụ?

Azịza: Mgbe ị na-eji eriri igwe anaghị agba nchara maka ịgbado ọkụ MIG, na dayameta nke waya 1.2, mgbanwe jet nwere ike nweta naanị mgbe m dị ugbu a ≥ 260-280A; A na-ahụta mkpọda dị n'okpuru uru a ngbanwe dị mkpụmkpụ, nwere nnukwu mwụsa na n'ozuzu enweghị ike iji ya. Naanị site na iji a pulsed MIG ike ọkọnọ na a usu ugbu a karịrị 300A nwere ike pulse droplet mgbanwe ga-enweta n'okpuru ịgbado ọkụ okwukwo nke 80-260A na-enweghị spatter ịgbado ọkụ.

9. Gịnị mere CO2 gas shielding eji maka flux cored igwe anaghị agba nchara ịgbado ọkụ waya? Ịchọghị ọkụ ọkụ nwere pulses?

Azịza: Ugbu a, eriri igwe anaghị agba nchara (dị ka 308, 309, wdg) na-ejikarị flux cored igwe anaghị agba nchara (dị ka 308, 309, wdg) nwere usoro mgbanwe nke emepụtara dabere na mmeghachi omume metallurgical nke ịgbado ọkụ nke emepụtara n'okpuru nchebe gas CO2, yabụ enweghị ike iji ha maka ịgbado ọkụ MAG ma ọ bụ MIG. ; Enweghị ike iji isi mmalite ịgbado ọkụ pulse arc.