日本无码中出在钱,欧美一级成人网站,黄色毛片免费看片,五区六区久久久久,日韩美女永久网址在线观看

船體用鋼對化學成分、力學性能和加工性能等均有較高的要求，特別是高級別船板鋼對組織均勻性"強度和低溫沖擊韌性的要求非常高。

Ship steel has higher chemical composition, mechanical properties and processing performance requirements, especially high grade steel on the microstructure of the strength and impact toughness at low temperature is very high.

中厚板鋼中非金屬夾雜物，如氧化物和硫化物可能對鋼的澆鑄性能和使用性能有不利影響：生產中Al2O3夾雜物可能會導致澆鑄過程中水口堵塞，影響連澆，還會在軋制后變為長條狀從而導致B類夾雜物超標。

Non metallic inclusions in steel plate, such as oxides and sulfides may have adverse effect on casting properties and performance of steel production: Al2O3 inclusions may lead to nozzle clogging in casting process of continuous casting, but also to strip leading to B type inclusion in exceed the standard after rolling.

北京科技大學的學者為了研究采用BOF-LF-RH-CC工藝生產的A32船板鋼潔凈度水平，進行了三爐工業實驗X 通過對冶煉過程系統取樣分析。

Researchers from the University of Science and Technology Beijing in order to study the BOF-LF-RH-CC technology used in production of A32 steel cleanliness level, carried out three experiments of X through the analysis of the industrial furnace smelting process system sampling.

研究了鋼中總氧"氮含量變化，夾雜物的轉變規律及機理X 結果表明: 該工藝生產的船板鋼有較高的潔凈度，中包總氧控制在2×10-5以下，氮含量控制在4×10-5以下；LF精煉過程中，鋼中總氧"夾雜物數量密度和平均尺寸均降低，夾雜物轉變為CaO-MgO- Al2O3三元系。

Study on the variation of nitrogen content of total oxygen in steel, change law and mechanism of X inclusion results showed that there were higher in the production process of steel cleanliness, in the total package oxygen control under 2 * 10-5, the nitrogen content in the following 4 * 10-5; LF refining process, the total oxygen in steel inclusion object number density and average size were decreased and the inclusion into CaO-MgO- Al2O3 three system.

RH精煉過程中，鋼中總氧和夾雜物數量密度降低，而夾雜物平均尺寸升高; 鈣處理過程中，夾雜物數量密度升高，而夾雜物平均尺寸降低，夾雜物轉變為CaO - Al2O3-CaS三元系。

RH refining process, total oxygen and inclusions in steel number density decreased, and the average size of inclusions increased; calcium treatment process, inclusion number density increases, and the average size of inclusions decreased, inclusion into CaO - Al2O3-CaS three system.

本文由濟鋼一級代理商友情奉獻.更多有關的知識請點擊:http://www.ctmpfsc.com我們將用最先進的技術.最真誠的態度.為您提供最為全面的服務.更多有關的知識我們將會陸續向大家奉獻.敬請期待.

This paper consists of Jinan level agents friendship dedication. More related knowledge: Please click http://www.ctmpfsc.com we will use the most advanced technology. The most sincere attitude, to provide you with the most comprehensive service. More related knowledge and we will continue to offer. Please look forward to.