Spiral welded pipe (SSAW) iwepụ nchara na usoro mmeghe nke mgbochi corrosion: Mwepụ nchara bụ akụkụ dị mkpa nke usoro mgbochi corrosion pipeline. Ugbu a, e nwere ọtụtụ nchara mwepụ ụzọ, dị ka akwụkwọ ntuziaka nchara mwepụ, ájá gbawara na pickling nchara mwepụ, wdg N'etiti ha, ntuziaka nchara mwepụ, n'ibu iwepụ nchara na eserese mwepụ (mgbochi corrosion brushing mmanụ) bụ dịtụ nkịtị nchara. ụzọ mwepụ.

1. Akwụkwọ ntuziaka derusting

Wepu ọnụ ọgụgụ na nkedo ájá n'elu ọkpọkọ, akụrụngwa na containers na scraper na faịlụ, na mgbe ahụ na-eji a waya brush wepụ sere nchara n'elu nke ọkpọkọ, ngwá na containers, mgbe ahụ polishing ha na sandpaper, na n'ikpeazụ hichaa. ha na owu silk. ụgbụ.

2. Mechanical nchara mwepụ

Buru ụzọ were scraper ma ọ bụ faịlụ wepụ ọnụ ọgụgụ na ịkwanye ájá n'elu ọkpọkọ; mgbe ahụ, otu onye nọ n'ihu igwe na-emepụta ihe na onye nke ọzọ nọ n'azụ igwe na-emepụta ihe, a na-agbanyekwa ọkpọkọ ugboro ugboro n'ime igwe na-eme ka ọ dị nro ruo mgbe a ga-ekpughe ezigbo agba nke ígwè ahụ; Tupu ito mmanụ, jiri silk owu hichaa ya ọzọ iji wepụ ntụ na-ese n'elu elu.

3. Mgbochi corrosion ahịhịa ahịhịa

Pipeline, akụrụngwa na valvụ akpa bụ n'ozuzu mgbochi corrosion na mmanụ dịka ihe achọrọ si dị. Mgbe enweghị mkpa imewe, ekwesịrị ịgbaso ụkpụrụ ndị a:

a. A ga-ebu ụzọ tee pipeline, akụrụngwa na arịa ndị a na-agbanye n'elu ya na otu uwe nke agba mgbochi nchara, mgbe ahụ, a ga-ese uwe elu abụọ nke elu elu tupu enyefee ya. Ọ bụrụ na enwere ihe ndị a chọrọ maka nchekwa ọkụ na mgbochi, a ga-ese ihe mkpuchi abụọ nke agba ajari;

b. Tee uwe abụọ nke agba mgbochi nchara n'elu pipeline, akụrụngwa na arịa zoro ezo. A ghaghị ịcha uwe nke abụọ nke agba mgbochi nchara mgbe uwe mbụ ahụ kpochara kpamkpam, na nkwụsi ike nke agba nchara kwesịrị ekwesị;

3. Mgbe a na-eji pipeline e liri dị ka oyi akwa mgbochi corrosion, ọ bụrụ na a na-arụ ya n'oge oyi, ọ bụ ihe amamihe dị na ya iji mmanụ mgbaze rọba ma ọ bụ mmanụ ụgbọ elu gbazee 30 A ma ọ bụ 30 B petroleum asphalt. Ụdị abụọ:

① Ntugharị akwụkwọ ntuziaka: a ga-etinye brushing akwụkwọ ntuziaka n'ígwé, na oyi akwa ọ bụla kwesịrị ka a na-emegharị ya, na-agafe criss-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-cross-na-na-na-edowe mkpuchi na-enweghị efu ma ọ bụ daa;

② Igwe ịgbasa igwe: Agba agba agba agba kwesịrị ịdị n'elu ala a na-ese n'oge ịgba mmiri. Mgbe elu a na-ese ihe dị larịị, ebe dị anya n'etiti oghere na ebe a na-ese ihe kwesịrị ịbụ 250-350mm. Ọ bụrụ na elu a na-ese ihe bụ elu arc, ebe dị anya n'etiti oghere na elu a na-ese kwesịrị ịdị ihe dịka 400mm. , Mgbe ị na-agba mmiri, mmegharị nke nozzle kwesịrị ịdị n'otu, a ga-edebe ọsọ ọsọ na 10-18m / min, na ikuku ikuku abịakọrọ na-eji agba agba kwesịrị ịbụ 0.2-0.4MPa.