Nkọwa
Ụdị 347/347H igwe anaghị agba nchara bụ ọkwa austenitic nke chromium steel, nke nwere columbium dị ka ihe na-eme ka ọ kwụsie ike. Enwere ike ịgbakwunye Tantalum maka imezu nkwụsi ike. Nke a na-ewepụ ọdịda carbide, yana corrosion intergranular na ọkpọkọ ígwè. Ụdị 347 / 347H igwe anaghị agba nchara ọkpọkọ na-enye elu creep na nrụgide mgbawa Njirimara karịa ọkwa 304 na 304L. Nke a na-eme ka ha dabara adaba maka ikpughe na mmetụta uche na corrosion intergranular. Ọzọkwa, ntinye nke columbium na-enye ohere ka ọkpọkọ 347 nwee ezigbo nguzogide corrosion, ọbụna karịa nke 321 igwe anaghị agba nchara. Otú ọ dị, 347H ígwè bụ elu carbon mejupụtara dochie igwe anaghị agba nchara ọkwa ọkwa 347. Ya mere, 347H ígwè tubes na-enye mma elu okpomọkụ na creep Njirimara.
347 / 347h anaghị agba nchara nchara nchara
Ndị a bụ njirimara nke ọkpọkọ igwe anaghị agba nchara 347/347H nke Arch City Steel & Alloy nyere:
Nguzogide corrosion:
- Na-egosiputa nguzogide oxidation dị ka igwe anaghị agba nchara austenitic ndị ọzọ
- Achọtara karịa ọkwa 321 maka mmiri mmiri na gburugburu ọnọdụ okpomọkụ dị ala
- Mma elu okpomọkụ Njirimara karịa 304 ma ọ bụ 304L
- Ezigbo iguzogide mmetuta na gburugburu okpomọkụ dị elu
- Kwesịrị ekwesị maka ngwa welded dị arọ nke enweghị ike ịgbanye
- Ejiri ya maka akụrụngwa arụ ọrụ n'etiti 800 ruo 150°F (427 TO 816°C)
Weldability:
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347/347H igwe anaghị agba nchara tubes / ọkpọkọ na-ahụta ka ndị kasị weldable n'etiti niile elu ọkwa steels ọkpọkọ.
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Enwere ike ịgbanye ha site na usoro azụmahịa niile
Ọgwụgwọ okpomọkụ:
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347/347H igwe anaghị agba nchara tubes na ọkpọkọ na-enye okpomọkụ dị ọkụ nke 1800 ruo 2000ºF.
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Ha nwere ike bụrụ ihe mgbakasị ahụ mgbakasị ahụ na-enweghị ihe egwu ọ bụla nke corrosion intergranular na-esote n'ime oke mmiri ozuzo carbide nke 800 ruo 1500ºF.
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Enweghị ike ime ka ọ sie ike site na ọgwụgwọ okpomọkụ
Ngwa:
A na-ejikarị ọkpọkọ 347/347H eme ihe maka imepụta akụrụngwa kwesịrị iji n'okpuru ọnọdụ mmebi siri ike. Ọzọkwa, a na-ejikarị ha eme ihe na ụlọ ọrụ nnụcha mmanụ. Ngwa ngwa gụnyere:
- Usoro kemịkalụ okpomọkụ dị elu
- Ọkụ mgbanwe okpomọkụ
- Ọkụ uzuoku dị elu
- Uzuoku okpomọkụ dị elu na ọkpọkọ/tube
- Sistemụ ikpochapụ ọrụ dị arọ
- Igwe ọkụ na-egbuke egbuke
- Ọkụkọ nnụcha n'ozuzu
NKWUKWU kemikal
Ihe mejupụtara kemịkalụ % (ọnụahịa kacha elu, belụsọ na amapụtara) | ||||||||
Ọkwa | C | Cr | Mn | Ni | P | S | Si | Cb/Ta |
347 | 0.08 kacha | Nkeji: 17.0 kacha elu: 20.0 | 2.0 kacha | Nkeji: 9.0 kacha elu: 13.0 | 0.04 kacha | 0.30 kacha | 0.75 kacha | nkeji: 10 x C kacha elu: 1.0 |
347H | Nkeji: 0.04 kacha elu: 0.10 | Nkeji: 17.0 kacha elu: 20.0 | 2.0 kacha | Nkeji: 9.0 kacha elu: 13.0 | 0.03 kacha | 0.30 kacha | 0.75 kacha | nkeji: 10 x C kacha elu: 1.0 |
Oge nzipu: Ọktoba 09-2020