Buku Lotsogolera la SAWH Lokhudza Tube: Chitoliro cha Chitsulo cha A252 Giredi 1 Chogwiritsira Ntchito Mafuta ndi Gasi

Kufotokozera Kwachidule:

Chitoliro cha SAWH (Submerged Arc Welded Spiral) chimagwiritsidwa ntchito kwambiri mumakampani amafuta ndi gasi chifukwa cha mphamvu zake zapamwamba komanso kulimba kwake. Mu blog iyi, tifufuza zinthu zofunika kwambiri komanso zabwino zakeChitoliro chachitsulo cha A252 Giredi 1 amagwiritsidwa ntchito kwambiri pa ntchito za mafuta ndi gasi. Pomaliza, mudzakhala ndi chidziwitso chokwanira cha mapaipi a SAWH ndi kufunika kwawo mumakampani.

Tumizani imelo kwa ife

Tsatanetsatane wa Zamalonda

Ma tag a Zamalonda

1. Kumvetsetsa payipi ya SAWH:

Mapaipi a SAWHAmapangidwa kuchokera ku mbale zachitsulo zokonzedwa mozungulira. Mapepalawa amapangidwa kukhala machubu ndikuwotcherera pogwiritsa ntchito njira yowotcherera ya arc yonyowa pansi pa madzi. Njira yowotcherera iyi imatsimikizira kuti chitolirocho chimakhala cholimba, chopitilira kutalika konse, zomwe zimapangitsa kuti chikhale cholimba kwambiri ku zinthu zakunja monga kugunda ndi kupanikizika. Mapaipi awa amadziwika kuti ndi amphamvu kwambiri ponyamula katundu komanso kapangidwe kake, zomwe zimapangitsa kuti akhale abwino kwambiri ponyamula mafuta ndi gasi.

2. Chitoliro chachitsulo cha A252 grade 1:

A252 GRADE 1 ndi chitoliro cha chitoliro chachitsulo chopangidwa mwapadera kuti chigwiritsidwe ntchito popanikizika. Mapaipi awa amapangidwa kuchokera ku chitsulo cha A252, chomwe chili ndi mphamvu zabwino kwambiri zamakaniko komanso mphamvu yayikulu yokoka. Chitoliro chachitsulo cha A252 GRADE 1 chimagwiritsidwa ntchito kwambiri chifukwa cha kuthekera kwake kupirira kupsinjika kwakukulu ndikukana dzimbiri ndi kusintha m'malo ovuta amafuta ndi gasi.

Katundu wa Makina

kalasi yachitsulo	mphamvu yocheperako yopezera phindu Mpa		Kulimba kwamakokedwe		Kutalikirana kochepa %	Mphamvu yochepa kwambiri J
kalasi yachitsulo	Kunenepa kotchulidwa mm		Kunenepa kotchulidwa mm		Kunenepa kotchulidwa mm	kutentha koyesedwa kwa
	16	＞16≤40	＜3	≥3≤40	≤40	-20℃	0℃	20℃
S235JRH	235	225	360-510	360-510	24	-	-	27
S275J0H	275	265	430-580	410-560	20	-	27	-
S275J2H	275	265	430-580	410-560	20	27	-	-
S355J0H	365	345	510-680	470-630	20	-	27	-
S355J2H						27	-	-
S355K2H						40	-	-

3. Ubwino wa chitoliro chachitsulo cha A252 grade 1:

a) Mphamvu ndi Kukhalitsa:Chitoliro chachitsulo cha A252 GRADE 1ndi yolimba komanso yolimba, imatha kupirira katundu wolemera ndipo ndi yoyenera makina otumizira mafuta ndi gasi. Mphamvu zawo zokoka kwambiri zimatsimikizira kulimba kwa nthawi yayitali ndikuchepetsa zosowa zosamalira.

b) Kukana dzimbiri: Mapaipi a mafuta ndi gasi amatha kuzizira chifukwa cha zinthu zoopsa zachilengedwe. Chitoliro chachitsulo cha A252 GRADE 1 chili ndi chophimba china cholimbana ndi dzimbiri, monga fused-bonded epoxy (FBE), kuti chikhale cholimba ndikuwonjezera nthawi yake yogwirira ntchito.

c) Kusinthasintha: Mapaipi a SAWH amatha kupangidwa m'madigiri ndi kutalika kosiyanasiyana kuti akwaniritse zofunikira za polojekiti. Kusinthasintha kumeneku kumathandiza kuyika popanda kufunikira malo olumikizirana angapo, kuchepetsa chiopsezo cha kutuluka kwa madzi.

d) Yotsika mtengo: Chitoliro chachitsulo cha A252 Giredi 1 chimapereka njira yotsika mtengo yogwiritsira ntchito mapaipi amafuta ndi gasi. Kugwira ntchito kwawo kwa nthawi yayitali komanso zosowa zochepa zosamalira kumachepetsa ndalama zogwirira ntchito pakapita nthawi.

Chitoliro cha Mzere wa Madzi Pansi pa Pansi

Kapangidwe ka Mankhwala

Kalasi yachitsulo		Mtundu wa de-oxidation a	% ndi kulemera, kuchuluka kwakukulu
Dzina lachitsulo	Nambala yachitsulo	C	C	Si	Mn	P	S	Nb
S235JRH	1.0039	FF	0,17	—	1,40	0,040	0,040	0.009
S275J0H	1.0149	FF	0,20	—	1,50	0,035	0,035	0,009
S275J2H	1.0138	FF	0,20	—	1,50	0,030	0,030	—
S355J0H	1.0547	FF	0,22	0,55	1,60	0,035	0,035	0,009
S355J2H	1.0576	FF	0,22	0,55	1,60	0,030	0,030	—
S355K2H	1.0512	FF	0,22	0,55	1,60	0,030	0,030	—
a. Njira yochotsera poizoni m'thupi imatchulidwa motere: FF: Chitsulo chophwanyika bwino chokhala ndi zinthu zomangira nayitrogeni mu kuchuluka kokwanira kumangirira nayitrogeni yomwe ilipo (monga osachepera 0,020% ya Al yonse kapena 0,015% ya Al yosungunuka). b. Mtengo wapamwamba kwambiri wa nayitrogeni sugwira ntchito ngati mankhwala akuwonetsa kuchuluka kwa Al komwe kuli 0,020% ndi chiŵerengero chochepa cha Al/N cha 2:1, kapena ngati pali zinthu zina zokwanira zomangira N. Zinthu zomangira N ziyenera kulembedwa mu Chikalata Chowunikira.

4. Kugwiritsa ntchito chitoliro chachitsulo cha A252 grade 1:

Chitoliro chachitsulo cha A252 Giredi 1 chili ndi ntchito zosiyanasiyana mumakampani amafuta ndi gasi, kuphatikizapo:

a) Mapaipi otumizira: amagwiritsidwa ntchito kunyamula mafuta osakonzedwa, gasi wachilengedwe ndi zinthu zina zamafuta kuchokera m'minda yopangira mafuta kupita ku malo oyeretsera mafuta ndi malo ogawa mafuta.

b) Kuboola M'mphepete mwa Nyanja: Mapaipi a SAWH amagwiritsidwa ntchito poboola mafuta ndi gasi m'mphepete mwa nyanja. Kulimba kwawo ndi dzimbiri komanso mphamvu zawo zopopera mpweya zimapangitsa kuti zikhale zoyenera kufufuza m'nyanja yakuya.

c) Malo Oyeretsera: Mapaipi achitsulo a A252 GRADE 1 amagwiritsidwa ntchito kwambiri m'malo oyeretsera mafuta osakonzedwa komanso zinthu zamafuta.

Pomaliza:

Mapaipi a SAWH, makamaka mapaipi achitsulo a A252 GRADE 1, amachita gawo lofunika kwambiri pa ntchito yomangachitoliro cha mafuta ndi gasiMakampani. Mphamvu zawo, kulimba kwawo, komanso kukana dzimbiri zimawapangitsa kukhala chisankho chodalirika pa ntchito zosiyanasiyana. Kumvetsetsa ubwino wa mapaipi a SAWH ndi makhalidwe awo enieni kungathandize kuonetsetsa kuti mafuta ndi gasi akuyenda bwino komanso kuchepetsa ndalama zokonzera ndikuwonjezera magwiridwe antchito a polojekiti.

Yapitayi: Chitoliro Chozungulira Choviikidwa mu Arc Welded Pipe GB/T9711-2011 Cha Chitoliro cha Mafuta

Ena: Machubu a Chitsulo Chozungulira Cholumikizidwa ndi Api Spec 5L a Mapaipi a Gasi

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