refined steel

The steel products, smelted in a 80t UHP electric arc furnace, refined in a ladle furnace and then rolled at a 700 × 1/ 650 × 3 three-high mill, can completely satisfy the customers' technical and quality requirements.

采用80t超高功率电弧炉冶炼，LF精炼处理及700×1/650×3三辊横列式轧机轧制，生产出的YF40MnV，其各项技术质量指标完全符合用户要求。

The alloying elements Ti and C can form TiC directly in the melt which acts as nucleus of cementite and causes both primary and eutectic cementite granulated and refined. So the cementite network in this steel can be eliminated.

Ti和C可以直接在液相中反应形成TiC，并可作为渗碳体的结晶核心，使一次渗碳体和共晶渗碳体发生粒化和细化，从而避免连续网状碳化物的形成。

The vacuum bottle body is refined made from stainless steel.

壶体采用不锈钢抽真空精致而成.

Referring to the orthotropic monolithic steel deck system of NDB, two full scale monolithic models of U rib-to-diaphragm connection were fabricated, refined finite element analysis and fatigue experiments were carried out on the two models.

参照南京大胜关长江大桥正交异性板整体桥面系制作了U肋与横梁连接处2个1：1的整体模型，完成了精细的有限元分析和疲劳试验。

Medium carbon steel ( 0. 36% C) was thermo-mechanically deformed and subsequent controlled cooled ( TMCP) to obtain refined microstructure with spheroidized cementite. It was found that ferrite grain size reduced with decreasing deformation temperature or increasing deformation strain.

采用热机械轧制工艺可使中碳钢（0.36%C左右）具有球化渗碳体的细晶显微组织，研究发现随变形温度的降低及变形量的增加其铁素体晶粒尺寸变小。