Spiral welded steel pipe a makwaara dị ka spiral steel pipe na spiral welded pipe, nke a na-eji obere carbon structural steel ma ọ bụ obere alloy ígwè warara dị ka akụkụ nke gburugburu ahịrị (a na-akpọ kpụrụ angle) akpọrepu n'ime a tube, na mgbe ahụ. tube welded ọnụ mere, ọ pụrụ ịbụ warara warara mmepụta nke nnukwu dayameta ígwè ọkpọkọ.A na-ejikarị eriri igwe eme ihe maka pipeline mmanụ na gas, nkọwa ya OD * ọkpụrụkpụ mgbidi.Akụkụ ịgbado ọkụ na akụkụ abụọ nke ịgbado ọkụ gburugburu welded ọkpọkọ kwesịrị hụ na hydrostatic ule, tensile ike nke weld na oyi ekwe ịrụ ọrụ chọrọ.
(1) nke nrụgide mmiri nnyefe spiral submerged arc welded ọkpọkọ: tumadi eji maka ebu mmanụ, eke gas pipeline;
(2) nke nrụgide mmiri nnyefe elu ugboro welded ígwè ọkpọkọ na gburugburu onuete: welded elu-ugboro ugboro n'apata ịgbado ọkụ usoro maka nrụgide mmiri nnyefe gburugburu elu-ugboro welded ígwè ọkpọkọ.Ikike nke ọkpọkọ ígwè n'okpuru nrụgide, ezigbo plasticity, ịdị mfe nke ịgbado ọkụ na ịkpụzi usoro;
(3) obere nrụgide mmiri nnyefe spiral submerged arc welded ígwè ọkpọkọ: akụkụ abụọ akpaka submerged arc ịgbado ọkụ ma ọ bụ otu akụkụ ịgbado ọkụ n'ime usoro iwu maka obere mgbali mmiri dị ka mmiri, gas, ikuku na uzuoku na submerged arc welded ọkpọkọ.
Njirimara ngwaahịa ọkpọkọ enweghị nkebi:
1. Nnwale usoro tube na-enweghị nkebi: ule na-egbuke egbuke, ule nyocha, ule mmetụta, ule ọkụ ọkụ, ule siri ike, ule metallographic, ule na-ehulata, ule na-adịghị emerụ ahụ (gụnyere eddy ugbu a X-ray na ultrasonic test).
2.Seamless pipe chemical analysis: ihe mejupụtara kemịkalụ nke ihe maka nyocha kemịkalụ, ihe mejupụtara kemịkalụ iji zute ọkọlọtọ chọrọ.
3.Seamless pipe pressure na hydrostatic test is for pressure tube by into the hydrostatic test, nke na-adịghị na-edobe ụkpụrụ nrụgide uru ọ bụghị ihe na-erughị 5 sekọnd, ghara igosipụta, na-enye mgbe nile hydraulic mgbali ule bụ 2.45MPa mgbali Nnwale nrụgide bụ. P = 0.5MPAa.
4.The corrosion test: ụlọ ọrụ na-eguzogide corrosion ígwè dị ka ụkpụrụ ọkọlọtọ ma ọ bụ nkwekọrịta n'etiti corrosion nke ígwè ọkpọkọ corrosion eguzogide ule, ọ dịghị intergranular corrosion.
Njirimara nke ọkpọkọ enweghị nkebi
(1) dayameta mpụta dị obere.
(2) Oke nkenke nwere ike ime obere ihe nke raw.
(3) oyi adọta ígwè ọkpọkọ na elu nkenke na ezi elu àgwà.
(4) ígwè ọkpọkọ obe ebe dị mgbagwoju anya.
(5) ígwè ọkpọkọ elu arụmọrụ, dịtụ ok metal.
Oge nzipu: Sep-19-2019