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top blowing
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  顶吹
     Test of laboratory and production was done Results show that starting pressure of bottom blowing Argon was 0 30~1 00 MPa,working pressure was 0 20~0 60 MPa,time of blowing Argon was 3 minutes up 20 mm diameter rod of 20MnSi steel was produced by this process Its tensile strength was 3 72 MPa up,other mechanical performance was analogous to top blowing Argon steel
     进行了实验室模拟试验及现场生产试验,结果表明:钢包底吹氩时,吹氩启动压力一般为0.30~1.00MPa,工作压力一般为0.20~0.60MPa,吹氩时间>3min。 按此吹氩工艺参数生产的20MnSi20mm螺纹钢材,其抗拉强度提高了3.72MPa,其它力学性能指标与顶吹氩钢相近
短句来源
     Development and Application of Slag Forming Agent for Oxygen Top Blowing Open Hearth Steelmaking
     顶吹氧平炉炼钢造渣剂的开发与应用
短句来源
     Thus, asemi-emprical formula of bath stirring strength for combined top/bottom blowing may be expressedas T_(o.c)=K·T~a_o·T· T~b_o·b, and that of only top blowing or only bottom blowing were also suggested.
     从而提出了表述顶底复吹转炉熔池搅拌混匀时间的半经验式:T_(0·c)=K·T_(0·T)~a·T_(0·b)~b,及纯顶吹和纯底吹的熔池搅拌混匀时间半经验式。
短句来源
     PRACTICE OF TRANSFORMING THE FIXED CAP OF THE 20t TOP BLOWING BOF INTO A MOVABLE CAP
     20t氧气顶吹转炉死炉帽改为活炉帽的实践
短句来源
     The new production process was practiced to the 16MnR steel plate melted by 30t top blowing converter.
     对30t顶吹转炉冶炼的16MnR钢板的生产工艺进行了改进试验。
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  “top blowing”译为未确定词的双语例句
     A converter control system for adding material and top blowing oxygen gas has been developed with the method of artificial intelligent static model.
     本文采用静智能态模型控制方法建立了转炉自动加料和自动吹氧的控制系统。
     EXPERIMENTAL STUDY ON SMELTING MC FEMN IN CONVERTER BY O_2 BOTTOM AND TOP BLOWING
     氧气顶底复吹转炉冶炼中碳锰铁的试验研究
短句来源
     PROBE INTO WAYS TO INCREASE Mn RECOVERY IN MEDIUMCARBON FERROMANGANE SE SMELTING IN CONVERTERBY TOP BLOWING OXYGEN
     转炉吹炼中锰提高锰回收率途径的探讨
短句来源
     The mass transfer characteristics between powder particles and liquid steel in the RH-PTB (Powder Top Blowing) refining have been investigated on this model.
     研究了RH-PTB(顶喷粉)精炼过程中钢液和粉剂颗粒间的传质特性。
短句来源
     Experiments were performed in an 100kg induction furnace with two approaches, one was oxygen top blowing with sodium carbonate addition and the other one was stirring with sodium salts addition.
     实验是在100kg感应炉中采用两种方法进行的. 一为搅拌法,另一为吹氧法.
短句来源
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  相似匹配句对
     PRACTICE OF AOD WITH TOP-BLOWING
     AOD炉复合吹炼法的工艺实践
     NEW TOP OXYGEN BLOWING PROCESS
     氧气顶吹新技术
短句来源
     Creation of TOP
     TOP诞生于悬崖边缘
短句来源
     THE TOP TEN
     网上十大人气榜
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     Energy saving on blowing
     吹气节能
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  top blowing
Top blowing oxidation of molten copper shows that the rate of oxidation is almost independent of the average oxygen concentration of the copper and proportional to the oxygen flow rate of the gas mixtures used.
      
The kinetics and mechanism of molten copper oxidation by top blowing of oxygen
      
This model is also of general significance to other metallurgical emulsification processes, such as those induced by iron ore reduction and top blowing, regardless of the mechanisms of droplet generation.
      
Mass transfer coefficient KBa for bottom blowing was found to be almost double that for top blowing.
      
The agreement between measurements and predictions was quite good for a variety of blowing arrangements which included top blowing with pure oxygen or air and bottom blowing with air.
      
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15 tests totaling 2640 minutes were performed with a trial plant using a countercurrent streamof oxide slag. The trial plant consists of a refining channel equipped with 5--6 top blowing oxygenlances, with a throughput of 2.5 t/h, Tests were made with medium and high P pig iron. As themolten iron was continuously fed into the plant, steel was directly tapped through a syphon spoutat the other end. The experiments with the countercurrent principle showed that up to 99.8% P and87% S can be removed, the end...

15 tests totaling 2640 minutes were performed with a trial plant using a countercurrent streamof oxide slag. The trial plant consists of a refining channel equipped with 5--6 top blowing oxygenlances, with a throughput of 2.5 t/h, Tests were made with medium and high P pig iron. As themolten iron was continuously fed into the plant, steel was directly tapped through a syphon spoutat the other end. The experiments with the countercurrent principle showed that up to 99.8% P and87% S can be removed, the end P content can be lowered to 0.001% and desulphidation via gasifica-tion can be easily realized. Other advantages include Iess consumption of raw materials, betterthermal efficiency and lower lining wear rate. Calculations confirmed that the above refining effectsstill haven't reached the ideal state. Therefore this method is thought to be specially suitable to theproduction of super-pure steel.

在使用逆流渣的试验装置上分15次进行了2640分钟的试验,表明渣钢逆流法有极高的精炼效率:能去除99.8%的磷和87%的硫,终点磷可低达0.001%,并能方便地应用气化脱硫反应。同时,还得到了原材料消耗少、热效率高、炉衬侵蚀速度小等效果。计算证明,上述精炼效果尚远未达到理想状态值。因此,本法不仅有助于连续冶炼工艺的发展,而且特别适用于高纯和超纯钢的生产。

In several previous studies[1, 4], the penetration length of a bottom-blowing oxygen jet in converter was calculated by using the formula of calculating the top-blowing oxygen jet. The difference between these two opposite gas jets has not been taken into consideration, such as their oppoite initial forces and the bouyancy forces exerting on gas jet. Based on a simulation experiment, this paper offers an expression to calculate the penetration length of a bottom-blowing gas jet as followswhere...

In several previous studies[1, 4], the penetration length of a bottom-blowing oxygen jet in converter was calculated by using the formula of calculating the top-blowing oxygen jet. The difference between these two opposite gas jets has not been taken into consideration, such as their oppoite initial forces and the bouyancy forces exerting on gas jet. Based on a simulation experiment, this paper offers an expression to calculate the penetration length of a bottom-blowing gas jet as followswhere l—— penetration length of the bottom-blowing gas jet;d —— dia, of nozzle exit; Fr ——Froude number; We —— Weber number;r'—— liquid density;σ——surface tension of liquid. W —— velocity of gas jet at nozzle exit.g—— acceleration of gravity.The expression reveals appropriately the different effects of the initial force, the bouyancy force and the surface tension on the upward bottom-blowing gas jet. Of course, such an expression should be modified in pratice under real condition. A comparison of the formula as above to the formula derived to calculate the top-blowing gas jet but also to be taken for the bottom-blowing gas jet in previous studies has been made (see Fig.3) . It is clear that the penetration length calculated by using the latter is rather smaller than using the former, because the bouyancy force has not counted in the latter.

根据底吹氧气炼钢供氧的特点,用理论分析和模拟实验相结合的方法,得到了描述底吹氧气流股的决定性准数和流股穿透长度的实验公式。与某些实际上来自顶吹模型计算顶吹流服穿透深度而用于计算底吹流股对熔池穿透长度的公式相比,更为合理。

The pre-treated hot metal containing 3%P has been obtained from hot metal containing Nb and P by oxygen bottom-blown converter in extracting Nb. Experimental results on blowing the pre-treated hot metal containing 3%P in a St oxygen bottom-blown converter with lime powder injection are described. These results show that low carbon steel of good quality can be made easily with lime powder injection along with oxygen blast, and high phosphorous-slag containing 21.78% P2O5 is obtained. The blowing is smooth and...

The pre-treated hot metal containing 3%P has been obtained from hot metal containing Nb and P by oxygen bottom-blown converter in extracting Nb. Experimental results on blowing the pre-treated hot metal containing 3%P in a St oxygen bottom-blown converter with lime powder injection are described. These results show that low carbon steel of good quality can be made easily with lime powder injection along with oxygen blast, and high phosphorous-slag containing 21.78% P2O5 is obtained. The blowing is smooth and steady, decarbonization and dephosphorization take place simultaneously, the lime consumption is low and the metal yield is higher than that of the top blowing. Thus the purpose of comprehensive utilization of complex ore is fulfilled. Problems such as lime powder injection, dephosphorization in blowing the pre-treated hot metal have also been discussed.

含3%P的高磷半钢是含Nb含P铁水在氧气底吹转炉提铌时获得的半成品。本文叙述5t氧气底吹转炉喷粉吹炼含3%P的半钢的试验结果。结果表明,在氧气底吹转炉内随氧流喷吹石灰粉冶炼3%P的高磷半钢能顺利的炼成质量良好的低碳钢,并得到含P_2O_521.78%的高磷渣。吹炼过程平稳,脱碳与脱磷同时进行,石灰用量少,金属收得率较顶吹转炉高。并达到了复合矿石综合利用的目的。并对高磷半钢喷吹石灰粉脱磷的一些问题进行了探讨。

 
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