Hoʻopuka pōkole o ke koʻokoʻo kuʻihao Q690 no ke kila

2. Hoʻopuka pōkole o ka pā kila Q690

International Q690 kila kila	Q690A	Q690B	Q690C	Q690D	Q690E	Q690F
huluhulu	ʻōwili wela		Quenching + tempering (quenched and tempered state)
maʻiʻo haumia	P/S kiʻekiʻe		haahaa P/S		P/S liʻiliʻi loa
Nā Koina Haʻalulu	NO	Haʻalulu wela maʻamau	0 ℃	-20 ℃	-40 ℃	-60 ℃

Eia nō naʻe, i kēia manawa, ʻo ka pā kila 690MPa no nā kīʻaha kīʻaha kūloko e hoʻokumu nui ʻia ma ka European standard EN10028-6, a ua helu pōkole ʻia nā waiwai pili i ka papa aʻe.

Hāʻawi i ke kila 690MPA no nā mea paʻi maʻamau o ʻEulopa	P690Q	P690QH	P69QL1	P69QL2
huluhulu	ka palaoa kinai a me ke kila wela
koi ikaika	Hua≥690MPa(pā mānoanoa≤50mm) Tensile770-940MPa
maʻiʻo haumia	P≤0.025%, S≤0.015%		P≤0.02%, S≤0.010%
Nā Koina Haʻalulu	20 ℃≥60J	20 ℃≥60J	0℃≥60J	-20 ℃≥40J
	0℃≥40J	0℃≥40J	-20 ℃≥40J	-40 ℃≥27J
	-20 ℃≥27J	-20 ℃≥27J	-40 ℃≥27J	-60 ℃≥27J
Nā wahi noi nui	ʻO nā hale paʻi a i ʻole nā ​​moku kaomi me nā koi haʻahaʻa haʻahaʻa		ʻO ka pahu spherical me nā koi ʻenehana kiʻekiʻe	pahu wai kai wai wai

Ma ke ʻano he pā kila no ka mālama ʻana i nā pahu a me ka hiki ke kaomi, pono ke loaʻa ka ikaika maikaʻi a me ka paʻakikī, ka hana ʻana i ke anu anuanu a me ka naʻau haʻahaʻa haʻahaʻa. ʻOiai ʻo ke kila Q690 i hoʻopaʻa ʻia a hoʻonāuki ʻia he haʻahaʻa haʻahaʻa carbon equivalent a maikaʻi loa nā waiwai piha, aia nō ia i kahi ʻano paʻakikī e hoʻohālikelike ʻia me nā mea hao 50/60kg ʻē aʻe, a koi ʻia ka mālama wela post-weld. Eia nō naʻe, ua hōʻike ʻia ka nui o nā haʻawina hoʻokolohua no ka Q690 steel welding consumables, ʻo ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa e hoʻohaʻahaʻa nui ʻia ma hope o ka mālama ʻana i ka wela, a me ka piʻi ʻana o ka wela wela a me ka emi ʻana o ka wela hopena, ka deterioration. o ka welding consumable toughness e oi maopopo. No laila, he mea koʻikoʻi nui ka hoʻomohala ʻana i ka ikaika kiʻekiʻe, ka paʻakikī paʻakikī, a me nā koʻokoʻo hoʻoheheʻe wela no ke kila Q690 e hoʻopili pono ai i ke kila Q690 i nā lako paʻi, hoʻemi i nā mea kila, a hoʻemi i nā kumukūʻai hana.

3.Brief hoʻolauna o kā mākou Q690 kila kuʻihao koʻokoʻo

'ikamu	Kūlana	ʻAno ʻili	Polarity	nā hiʻohiʻona nui
GEL-118M	AWS A5.5 E1108MISO 18275-BE7618-N4M2A	Pauka hao ʻano hydrogen haʻahaʻa	DC+/AC	ʻO ka ikaika kiʻekiʻe, ka hydrogen haʻahaʻa, ka maikaʻi deposition kiʻekiʻe, nā waiwai mechanical paʻa, maikaʻi loa ka hopena haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa i -50 ° C, a me ka paʻakikī hopena maikaʻi ma -40 ° C ma hope o ka mālama wela.
GEL-758	AWS A5.5 E11018-GISO 18275-BE7618-G A	Pauka hao ʻano hydrogen haʻahaʻa	DC+/AC	ʻO ka hydrogen haʻahaʻa haʻahaʻa, ʻoi aku ka maikaʻi o ka deposition kiʻekiʻe, ka paʻakikī kiʻekiʻe (-60 ℃≥70J), ka paʻakikī hopena maikaʻi ma -40/-50 ℃ ma hope o ka mālama wela
GEL-756	AWS A5.5 E11016-GISO 18275-BE7616-G A	ʻAno haʻahaʻa hydrogen potassium	AC/DC+	ʻO ka hydrogen haʻahaʻa haʻahaʻa, AC/DC+ ʻelua-kumu, paʻakikī hopena kiʻekiʻe (-60 ℃≥70J), paʻakikī hopena maikaʻi ma -50/-60 ℃ ma hope o ka mālama wela

4.Q690 kila kuʻihao koʻokoʻo mechanical hana hōʻike

Hōʻike:
1. ʻO ka "X" i kaha ʻia i ka ʻulaʻula ma ka American Standard a me ka European Standard e hōʻike ana i ke ʻano o ka ʻili lāʻau.
2. E pili ana ka GEL-758 me E11018-G a me ISO 18275-B E7618-G A ma AWS a me nā kūlana ISO.
3. E pili ana ka GEL-756 me E11016-G a me ISO 18275-B E7616-G A ma nā kūlana AWS a me ISO.
Mechanical waiwai o Q690 kila kuʻihao koʻokoʻo ma ka wela wela moku'āina

Hōʻike:

1. ʻAʻole loaʻa i nā kūlana pili i ka AWS a me ISO nā koi hana mālama wela no nā huahana i luna. Ua hōʻuluʻulu ʻia nā hana wela ma luna ma muli o nā kūlana ʻenehana o ka hapa nui o nā mea kūʻai aku a no ka ʻike wale nō.
2. ʻO GEL-118M ka hopena maikaʻi loa ma -40 ° C ma hope o ka hoʻomaʻamaʻa wela, a ʻoi aku ka maopopo o ka hopena o ka hopena ma -50 ° C.
3. Ma hope o ka mālama ʻana i ka wela, loaʻa iā GEL-758 ka hopena maikaʻi loa i ka -40 ° C, ʻoi aku ka maikaʻi o ka paʻakikī ma -50 ° C, a me ka hōʻino ʻana i ka haʻahaʻa haʻahaʻa ma -60 ° C.
4. ʻO ka haʻahaʻa haʻahaʻa haʻahaʻa hopena toughness deterioration o GEL-756 ma hope o ka wela hoʻomaʻamaʻa mea liʻiliʻi, a me ka haʻahaʻa-mehana toughness ma -60 ° C ua maikaʻi.

Weldability hōʻike o Q690 kila kuʻihao koʻokoʻo

1.Flat fillet welding (φ4.0mm)

ʻO GEL-118M ka hoʻoheheʻe ʻia ʻana ma mua a ma hope o ka wehe ʻana i ka slag (DC+)

Ma mua a ma hope o ka wehe ʻana o ka slag fillet flat fillet GEL-758 (DC+)

ʻO GEL-756 wiliwili paʻa paʻa ma mua a ma hope o ka wehe ʻana i ka slag (AC)

ʻO GEL-756 ka hoʻoheheʻe ʻia ʻana ma mua a ma hope o ka wehe ʻana o ka slag (DC+))

Q690 kila kuʻi koʻokoʻo kuʻihao e mālama

1. Ka mālama ʻana i nā mea hoʻohana welding:
Manaʻo ʻia nā mea hoʻohana welding e mālama ʻia ma lalo o ka mahana mau a me nā kūlana maloʻo, a kau ʻia ma luna o nā pallets a i ʻole nā ​​papa, e pale aku i ka hoʻopili pololei ʻana me nā paia a me ka lepo.

2. Hoʻomākaukau ma mua o ke kuʻi ʻana:
E hoʻomaʻemaʻe loa i ka makū, ka ʻōpala, nā ʻili ʻaila, a me nā mea ʻē aʻe ma luna o ka ʻili o ka mea kumu, a pale i ka makū o ka ʻili a i ʻole ka ʻike ʻana i ka ua a me ka hau.

3. Nā ana pale makani:
I ka wā e wili ai, pono e hōʻoia i ka wikiwiki o ka makani ma ka wahi kuʻi ʻana ʻaʻole ma mua o 2m / s. A i ʻole, pono e lawe ʻia nā hana pale.

4. Hoʻomaʻamaʻa mua:
Manaʻo ʻia e hoʻohana i nā mea hoʻomehana uila e hoʻomehana i ka mea hana ma luna o 150 ° C ma mua o ke kuʻi ʻana. ʻOiai ma mua o ka hoʻoheheʻe ʻana, pono e hoʻomehana ʻia ma luna o 150 ° C.

5. Layer a me alanui ka wela wela:
I loko o ke kaʻina hana hoʻoheheʻe holoʻokoʻa, ʻaʻole pono ka haʻahaʻa haʻahaʻa o ka interpass ma mua o ka wela preheating, a ʻo ka mahana i ʻōlelo ʻia he 150-220 ° C.

6. Hoʻokuʻu ʻia ka hydrogen ma hope o ke kuʻi ʻana:
Ma hope o ka wili ʻia ʻana o ka weld seam, e hoʻonui koke i ka mahana o ka hoʻomehana uila i 250 ℃ ~ 300 ℃, mālama i ka mahana no 2 a 4 mau hola, a laila hoʻomaha mālie.
① Inā ʻo ≥50mm ka mānoanoa o ka mea hana, pono e hoʻonui ʻia ka manawa paʻa i 4-6 mau hola, a laila hoʻomaha mālie.
② Ma lalo o nā kūlana o ka mānoanoa nui a me ke kaohi nui, hiki ke hoʻohui ʻia hoʻokahi dehydrogenation ma hope o ke kuʻi ʻana i ka mānoanoa 1/2, a hoʻomaha mālie i ka mahana interpass.

7. Hoʻolālā papahele:
Manaʻo ʻia e hoʻohana i ka welding multi-layer a me multi-pass, a pono e mālama ʻia ka wikiwiki o ka welding i ka wikiwiki mau.

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