STPT 370He papa ia o ke kūlana Iapana JIS G 3456 no nā paipu kila kalapona, i hoʻohana ʻia no nā paipu kaomi ma nā wahi me nā mahana ma luna o 350°C.Hiki ke hoʻohana ʻia nā paipu wili ʻole a i ʻole ka hoʻohana ʻana i ke kaʻina hana kuʻi uila (ERW).ʻO nā mea mechanical o STPT 370 mea he ikaika tensile haʻahaʻa o 370 MPa a me ka ikaika haʻahaʻa haʻahaʻa o 215 MPa.
Inā ʻoe e ʻimi nei i ka mea hana a me ka mea hoʻolako i nā paipu kila e kū ana i ka maʻamau JIS G 3456, a laila ʻo mākou ka hoa āu e ʻimi nei.E kelepona mai iā mākou i kēia lā a e hauʻoli mākou e kōkua iā ʻoe!
He kūpono no nā anawaena o waho 10.5 mm - 660.4 mm (6A - 650A) (1/8B - 26B).
ʻO A a me B nā ala ʻelua e hōʻike ai i ke anawaena inoa ma ka maʻamau Iapana.ʻO kahi kikoʻī, pili ʻo A me DN, ʻoiai ʻo B pili me NPS.
Hiki ke hana ʻia ʻo JIS G 3456 STPT 370 me ka hoʻohana ʻana i kamaʻemaʻekaʻina hana a i ʻole kakuʻi uila(RW) kaʻina hana.
ʻO ke kaʻina hana hana e pili pū me nā ʻano hoʻopau like ʻole no ka hoʻokō ʻana i nā kaiapuni hoʻohana like ʻole.
| Hōʻailona o ka papa | Hōʻailona o ka hana hana | |
| Kaʻina hana paipu | ʻano hoʻopau | |
| JIS G 3456 STPT370 | Maikaʻi: S | Hoʻopau wela: H Hoʻopau anu: C |
| Uila pale pale wili: E Kuʻi ʻia ʻo Butt: B | Hoʻopau wela: H Hoʻopau anu: C E like me ka hili ʻia ʻana o ke kūpale uila: G | |
Pono e mālama ʻia ʻo STPT 370.
1. Hot-hoʻopau seamless kila paipu: E like me ka mea i hana 'ia Low-mahana annealing a normalizing paha e like me ka makemake;
2. Ke anu-hoʻopau seamless paipu kila: Low-mahana annealing a maʻamau;
3. Hot-hoʻopau uila pale welded kila paipu: E like me ka mea hana Low-mahana annealing a normalizing paha ke noi;
4. Cold-finished uila kū'ē welded a E like me ka uila kū'ē welded kila paipu: Low-mahana annealing paha normalizing.
| Hōʻailona o ka papa | C | Si | Mn | P | S |
| JIS G 3456 STPT370 | 0.25% ka nui | 0.10 - 0.35% | 0.30 - 0.90% | 0.035% ka nui | 0.035% ka nui |
Inā pono, hiki ke hoʻohui i nā mea hou aku.
Ka ikaika uʻi, ka lae hua a i ʻole ke koʻikoʻi hōʻoia, a me ka elongation
Waiwai Palahalaha
He kūpono no nā paipu me ke anawaena o waho ma mua o 60.5 mm.
Hoʻonoho ʻia ka mea hoʻohālike ma waena o nā paepae ʻelua a palahalaha.Ke hiki aku ka mamao ma waena o nā papa ʻeluaH, ʻaʻohe māwae ma ka ʻili o ke kiʻi paipu kila.
H = 1.08t/(0.08+ t/D)
н: ka mamao ma waena o nā papa (mm);
t: ka mānoanoa o ka pā o ka paipu (mm);
D: waho anawaena o ka paipu (mm);
ʻO ke kūpale ʻana
He kūpono no nā paipu kila me ke anawaena o waho o 60.5 mm a i ʻole.
Ke hoʻokuʻu ʻia ka mea hoʻohālike a puni ka mandrel i kahi radius i loko o 6 mau manawa o ke anawaena o waho o ka paipu, nānā ʻia ka specimen a ʻaʻohe ʻike ʻia nā māwae.
| Nominal pā mānoanoa | Helu papa helu : Sch | |||||||||
| 10 | 20 | 30 | 40 | 60 | 80 | 100 | 120 | 140 | 160 | |
| ʻO ke kaomi hoʻāʻo hydraulic liʻiliʻi loa, Mpa | 2.0 | 3.5 | 5.0 | 6.0 | 9.0 | 12 | 15 | 18 | 20 | 20 |
Inā ʻaʻole ka nui maʻamau ka anawaena o waho a me ka mānoanoa o ka pā o ka paipu kila, hiki ke hoʻohana ʻia nā ʻano hana e hoʻoholo ai i ka pae kikoʻī kūpono.
ʻO ka mua, e koho i ka papa hoʻonohonoho maʻamau e pili kokoke ana i ka nui maʻamau ʻole;ʻO ka lua, e hoʻoholo i ka helu kikoʻī ma ka helu ʻana i ka waiwai P.
Ma nā ʻano ʻelua, pono ke koho ʻia ka waiwai liʻiliʻi ma ke ʻano he māka kikoʻī hope loa.
P = 2st/D
P: kaomi ho'āʻo (MPa);
t: ka mānoanoa o ka paia o ka paipu (mm);
D: waho anawaena o ka paipu (mm);
s: 60% o ka waiwai liʻiliʻi i ʻōlelo ʻia o ka helu hua a i ʻole ke koʻikoʻi hōʻoia;
ʻO nā ʻano hoʻokolohua maʻamau ʻaʻole hoʻopōʻino e pili ana i ka hoʻāʻo ultrasonic (UT) a me ka hoʻāʻo eddy current (ET).
I ka wā e hana ana i ka ultrasonic inspection, pono e kuhikuhi i ka JIS G 0582, a i ka wā e like ai ka hopena o ka nānā ʻana i ka maʻamau kuhikuhi no ka papa UD, ua manaʻo ʻia he hemahema.
I ka hana ʻana i ka nānā ʻana i kēia manawa, pono ke kuhikuhi ʻia iā JIS G 0583. Ke like a ʻoi aku ka hopena o ka nānā ʻana i ka maʻamau kuhikuhi no ka papa EY, manaʻo ʻia ʻaʻole kūpono.
Mai kona hoʻokumu ʻana i ka makahiki 2014,Ke kila Botopua lilo i mea hoʻolako alakaʻi o ka paipu kila kalapona ma Northern China, i ʻike ʻia no ka lawelawe maikaʻi loa, nā huahana kiʻekiʻe, a me nā hāʻina piha.
Hāʻawi ka hui i nā ʻano paipu kila kalapona a me nā huahana pili, me ka seamless, ERW, LSAW, a me ka paipu kila SSAW, a me ka laina piha o nā paipu paipu a me nā flanges.ʻO kāna mau huahana kūikawā pū kekahi me nā mea kila kiʻekiʻe a me nā austenitic stainless steel, i hana ʻia e hoʻokō i nā koi o nā papahana pipeline like ʻole.
E ʻoluʻolu e kelepona mai iā mākou a hauʻoli mākou e pane i kāu mau nīnau.
