STPT 370wani ma'auni ne na ma'auni na Jafananci JIS G 3456 don bututun ƙarfe na carbon, wanda ake amfani da shi don bututun matsa lamba a cikin yanayin zafi sama da 350 ° C.Yana iya zama ko dai maras sumul ko welded bututu ta amfani da lantarki juriya waldi (ERW).Kaddarorin injiniyoyi na kayan STPT 370 sune ƙaramin ƙarfi na 370 MPa da ƙaramin ƙarfin yawan amfanin ƙasa na 215 MPa.
Idan kuna neman masana'anta da masu samar da bututun ƙarfe waɗanda suka dace da ma'aunin JIS G 3456, to mu ne abokin tarayya da kuke nema.Tuntube mu a yau kuma za mu yi farin cikin taimaka muku!
Ya dace da diamita na waje 10.5 mm - 660.4 mm (6A - 650A) (1/8B - 26B).
A da B hanyoyi biyu ne don bayyana diamita na ƙididdiga a ma'aunin Jafananci.Musamman, A yayi daidai da DN, yayin da B yayi daidai da NPS.
JIS G 3456 STPT 370 za a iya samar da ta amfani damtsarin masana'antu ko kumalantarki juriya waldi(ERW) tsari.
Tsarin masana'anta kuma ya dace da hanyoyin gamawa daban-daban don jure yanayin yanayin amfani daban-daban.
| Alamar daraja | Alamar tsarin masana'anta | |
| Tsarin kera bututu | Hanyar gamawa | |
| Saukewa: JIS G3456STPT370 | Babu shakka: S | An gama zafi: H Ciwon sanyi: C |
| Juriyar wutar lantarki: E Tushen welded: B | An gama zafi: H Ciwon sanyi: C Kamar yadda juriya na lantarki: G | |
Dole ne a yi maganin STPT 370 da zafi.
1. Bututun ƙarfe mara ƙarfi da aka gama da zafi: Kamar yadda aka ƙera ƙarancin zafin jiki ko daidaitawa ana iya amfani da shi kamar yadda ake buƙata;
2. Sanyi-ƙare m karfe bututu: Low-zazzabi annealing ko normalizing;
3. Hot-ƙare wutar lantarki juriya welded karfe bututu: Kamar yadda kerarre Low-zazzabi annealing ko normalizing za a iya amfani kamar yadda ake bukata;
4. Cold-ƙare wutar lantarki welded kuma Kamar yadda wutar lantarki juriya welded karfe bututu: Low-zazzabi annealing ko normalizing.
| Alamar daraja | C | Si | Mn | P | S |
| Saukewa: JIS G3456STPT370 | 0.25% max | 0.10 - 0.35% | 0.30 - 0.90% | 0.035% max | 0.035% max |
Idan ya cancanta, ana iya ƙara ƙarin abubuwa.
Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfafawa, Ƙarfafa Ƙarfafawa ko Ƙarfafa Ƙarfafawa
Kayan Lantarki
Ya dace da bututu tare da diamita na waje fiye da 60.5 mm.
Ana sanya samfurin tsakanin dandamali guda biyu kuma an daidaita shi.Lokacin da nisa tsakanin faranti biyu ya kaiH, babu fasa a saman samfurin bututun ƙarfe.
H = 1.08t/(0.08+ t/D)
н: nisa tsakanin faranti (mm);
t: kauri bango na bututu (mm);
D: diamita na waje na bututu (mm);
Lanƙwasa
Ya dace da bututun ƙarfe tare da diamita na waje na 60.5 mm ko ƙasa da haka.
Lokacin da aka lanƙwasa samfurin a kusa da mandrel zuwa radius na ciki mai ninki 6 na waje diamita na bututu, ana duba samfurin kuma ba a sami tsagewa ba.
| Kaurin bango mara kyau | Lambar jadawalin: Sch | |||||||||
| 10 | 20 | 30 | 40 | 60 | 80 | 100 | 120 | 140 | 160 | |
| Matsakaicin gwajin hydraulic, Mpa | 2.0 | 3.5 | 5.0 | 6.0 | 9.0 | 12 | 15 | 18 | 20 | 20 |
Lokacin da diamita na waje da kauri na bangon bututun ƙarfe ba daidai ba ne masu girma dabam, ana iya amfani da hanyoyi masu zuwa don tantance ƙimar da ta dace:
Da farko, zaɓi daidaitaccen jadawalin jadawalin wanda ya fi kusa da girman da ba daidai ba;na biyu, ƙayyade ƙimar ƙayyadaddun bayanai ta hanyar ƙididdige ƙimar P.
A cikin hanyoyi guda biyu, ya kamata a zaɓi ƙaramin ƙima azaman ƙimar ƙayyadaddun bayanai na ƙarshe.
P = 2st/D
P: gwajin gwaji (MPa);
t: kauri bango na bututu (mm);
D: diamita na waje na bututu (mm);
s: 60% na ƙayyadaddun ƙayyadaddun ƙimar ma'aunin yawan amfanin ƙasa ko matsananciyar hujja;
Hanyoyin gwajin gama gari marasa lalacewa sun haɗa da gwajin ultrasonic (UT) da gwajin eddy current (ET).
Lokacin yin binciken ultrasonic, ya kamata a yi la'akari da JIS G 0582, kuma lokacin da sakamakon binciken ya yi daidai da ko ya zarce ma'aunin tunani na aji na UD, ana ɗaukarsa gazawa.
Lokacin yin bincike na yanzu, ya kamata a yi la'akari da JIS G 0583. Lokacin da sakamakon binciken ya yi daidai da ko ya wuce ma'auni na ma'aunin EY, ana ɗaukarsa bai cancanta ba.
Matsakaicin ma'auni da kauri na bango a cikin kewayon 10.5 mm zuwa 660.4 mm an jera su a cikin JIS G 3456, wanda shinekarfe bututu nauyi tebur da madaidaicin jadawalin No.
Jadawalin 10,Jadawalin 20,Jadawalin 30,Jadawalin 40,Jadawalin 60,Jadawalin 80,Jadawalin 100,Jadawalin 120,Jadawalin 140,Jadawalin 160.
Tun lokacin da aka kafa shi a cikin 2014.Botop Karfeya zama babban mai samar da bututun ƙarfe na carbon a Arewacin kasar Sin, wanda aka sani don kyakkyawan sabis, samfurori masu inganci, da cikakkun mafita.
Kamfanin yana ba da nau'ikan bututun ƙarfe na carbon da samfuran da ke da alaƙa, waɗanda suka haɗa da marasa ƙarfi, ERW, LSAW, da bututun ƙarfe na SSAW, da kuma cikakken jeri na kayan aikin bututu da flanges.Kayayyakinsa na musamman sun haɗa da gawa mai daraja da austenitic bakin karafa, waɗanda aka keɓance don biyan buƙatun ayyukan bututun.
Da fatan za a ji daɗin tuntuɓar mu kuma za mu yi farin cikin amsa tambayoyinku.
