網(wǎng)絡(luò)釋義

用法例句

The concentric reducer in transfer oil line and some of the bends in the front of radiation section of cylindrical furnace in furfural equipment in a refinery suffered localized corrosion.

針對某煉油糠醛精制裝置的抽出油加熱爐出現(xiàn)轉(zhuǎn)油線同心異徑管及輻射段前流段的彎頭局部腐蝕減薄的情況,從管件材料性能、蝕坑形貌、流體特性等多方面進(jìn)行原因分析,確認(rèn)主要是氣泡沖蝕腐蝕的結(jié)果。

Standard system for reducers commonly used at home and abroad was introduced, thirty(30) safety incident cases caused by reducer failure were analyzed from aspects of fitting, welding, erosion, breakage, stress corrosion etc.

介紹了國內(nèi)外常用異徑管標(biāo)準(zhǔn)體系,從管件、焊接、沖蝕、爆裂、應(yīng)力腐蝕等方面分析了30起由異徑管失效而引起的安全事故案例;從失效分析和理論研究方面綜述了國內(nèi)外異徑管的研究概況。

Detailed siress analysis was carried out for a section of the pipeline including an eccentric reducer on which long cracks appeared twice.

進(jìn)而對曾兩次出現(xiàn)長裂紋的偏心異徑管管段進(jìn)行細(xì)部應(yīng)力分析。

The tapered pipe in air-cooling accessory line of a certain ammonia synthetic tower was cracked.

某廠氨合成塔冷氣副線異徑管發(fā)生爆裂事故,進(jìn)行技術(shù)檢驗(yàn)后分析了爆裂原因,材質(zhì)為20鋼的異徑管內(nèi)是高壓富氫介質(zhì),氫分壓21 MPa,該冷氣副線長期處于關(guān)閉狀態(tài),由于副線中心管填料密封失效,使異徑管長期超溫工作,異徑管在超溫高壓富氫介質(zhì)工況下發(fā)生了氫腐蝕低應(yīng)力脆性斷裂。

Based on statistics analysis of an invalid tapered pipe with finite element software Pro/MECHANICA,the stress distribution diagram was obtained and cause of tapered pipe failure was found.

利用有限元軟件Pro/MECHANICA對一失效的異徑管進(jìn)行了靜力學(xué)分析,得到了異徑管應(yīng)力分布圖,找到了異徑管失效的原因。

Analysis of finite-element strength of reducer tee;

異徑三通有限元強(qiáng)度分析

Experimental study on asymmetrical rolling with work roll edge contact;

異徑軋制低碳鋼的力學(xué)性能參數(shù)與粗糙度實(shí)驗(yàn)研究

The finite difference method and 2 D steady laminar model were applied to the numerical simulation for the fluid flow inside the molten pool during unequal diameter twin roll strip cast rolling.

采用有限差分和二維穩(wěn)態(tài)層流模型，應(yīng)用邊界適體坐標(biāo)（ＢＦＣ）技術(shù)對異徑雙輥薄帶鑄軋熔池中鋼液的流動進(jìn)行了數(shù)值仿真·分析了鑄輥轉(zhuǎn)速、液面寬度、澆注區(qū)寬度、澆注位置等操作和設(shè)計(jì)參數(shù)對流場的影響·計(jì)算結(jié)果表明鋼液注入熔池后，在雙輥相向轉(zhuǎn)動的作用下，會引起強(qiáng)制對流并產(chǎn)生２個(gè)逆時(shí)針方向的回流區(qū)·通過對不同工況的分析指出澆鋼時(shí)采取低壓頭、偏流澆注并維持一定的液面高度等操作有利于鑄軋過程的穩(wěn)定進(jìn)行

The finite difference method and 2 D transient heat transfer model were applied to the numerical simulation for the development of temperature distribution patterns in the molten pool and in the solidified metal layer formed on the surfaces of two opposite rotating rolls during the early stage of unequal diameter twin roll strip cast rolling process.

采用有限差分和二維非穩(wěn)態(tài)凝固傳熱模型，應(yīng)用邊界適體坐標(biāo)（ Ｂ Ｆ Ｃ） 技術(shù)對異徑雙輥薄帶鑄軋熔池中鋼液的初始凝固傳熱特性進(jìn)行了數(shù)值仿真·分析了鑄軋起始階段熔池內(nèi)溫度場的發(fā)展變化及輥面凝固薄殼的生長過程，指出１００ ｓ 為適宜的起始鑄軋時(shí)間，此時(shí)凝固末端距熔池出口約９ ～１０ ｍ ｍ·探討了鋼液過熱度、輥壁內(nèi)表面與冷卻水的對流換熱系數(shù)和輥壁導(dǎo)熱熱阻等設(shè)計(jì)及操作工藝參數(shù)在起始鑄軋階段對鋼液的凝固傳熱及凝殼形成的影響，結(jié)果發(fā)現(xiàn)輥壁是制約熔池中凝固傳熱的重要因素，直接影響著凝殼的快速生長