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北京石油化工學(xué)院2026年研究生招生接收調(diào)劑公告

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本帖產(chǎn)生 1 個翻譯EPI ，點擊這里進行查看

清風(fēng)拂夢

新蟲 (小有名氣)

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金幣: 268.8
帖子: 271
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蟲號: 3403337
注冊: 2014-09-07
性別: MM
專業(yè): 高分子合成化學(xué)

[求助] 求翻譯，謝謝，材料化學(xué)類的……

Calculation indicated that the
compressive thermal stresses in the snorkel
lining would decrease continuously after
first heat. Further wear of the snorkel inner
brick lining is mainly governed by steel
erosion and thermal cycling of the degasser.
Bricks with low creep resistance will lead to
hot deformation near to hot face, and
resulting in reduced hot strength and
potentially open joints during cooling down.
In summary, the excessive wear of
the upper snorkel brick lining at the initial
stage of a campaign was due to the thermal
stress concentration leading to the formation
of micro-cracks at the hot face, which lead
to the accelerated hot erosion.
Both preheating temperature and
initial operational conditions have been
examined for potential improvements.
Preheat procedure is now closely monitored
to ensure sufficient preheat of the whole
snorkels to a minimum temperature of about
500°C. The delay between preheating and
first heat is minimised to reduce heat loss.
The first treatment starts with a gentle Ar
flow and avoiding steel grade with very
aggressive slag chemistry.
The snorkel life is often limited by
the outer castable performance. The failure
of the outer castable is primarily due to
thermal cracking and deskulling damages. A
regular scheduled deskulling has been
established to reduce the mechanical
damages likely caused by heady deskulling.
Coatings will be introduced to both steel
shell and the anchors to reduce thermal
stresses on the outer castable.

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1樓 2014-09-22 11:05:01

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wanfuping

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翻譯EPI: 35
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金幣: 2378.1
紅花: 3
帖子: 243
在線: 329.2小時
蟲號: 2050897
注冊: 2012-10-09
性別: GG
專業(yè): 人工智能與知識工程

【答案】應(yīng)助回帖

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清風(fēng)拂夢: 金幣+15, ★★★★★最佳答案, 真的很感謝你 2014-09-22 12:18:11
清風(fēng)拂夢: 金幣+5, ★★★★★最佳答案, 謝謝 2014-09-22 12:19:27
RXMCDM: 翻譯EPI+1 2014-09-22 19:27:39

計算表明，第一次加熱后，通氣管內(nèi)襯處壓縮熱應(yīng)力會持續(xù)下降。通氣管內(nèi)襯里面部分的進一步摩損主要是因為鋼腐蝕和脫氣器的熱循環(huán)。具有低抗蠕變性的磚塊會在加熱面附近導(dǎo)致熱變形，進而導(dǎo)致熱強度減少，且在冷卻期間會潛在地產(chǎn)生間隙�？傊�，在工作的初始階段，通氣管內(nèi)襯里面部分的上端部的過度磨損是因為熱應(yīng)力集中，導(dǎo)致在加熱面處形成微裂縫，進而加速熱腐蝕。為了做進一步改善，要檢驗預(yù)熱溫度和初始工作條件。為了保證整個通氣管能足夠地預(yù)熱到最少500度，預(yù)熱步須仔細監(jiān)控。須減少由預(yù)熱和第一次加執(zhí)而導(dǎo)致的延時，來減少熱損失。第一次處理始于較溫和的氣流，從而避免鋼種產(chǎn)生劇烈的爐渣化學(xué)反應(yīng)。通氣管壽命通常取決于外面的澆注材料性能。外部澆注材料的失效主要是由于熱裂縫和脫蓋損害。為了減少因性急導(dǎo)致的機械損害，須制定一份定期的脫蓋安排計劃。為了減小外部澆注材料的熱應(yīng)力，在鋼殼和錨處都須涂層。

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2樓2014-09-22 12:14:32

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