坯料

The traditional ceramic semifinished materials are the aluminum silicate system, the production phase are mainly the mullite, the solid phase reaction temperature are quite high, generally in 1200℃ about; But after joining the wollastonite, turns the calcium silicate system, the high temperature resultant for the anorthite and the cristobalite, reduced the solid phase reaction temperature largely, approximately for 1000℃~1050℃, and the anorthite assumes acicular.

传统的陶瓷坯料为硅酸铝系统，生成的物相主要为莫来石，固相反应温度比较高，一般在1200℃左右；而加入硅灰石后变成硅酸钙系统，高温生成物为钙长石和方石英，大幅降低了固相反应温度，大约为1000℃～1050℃，且钙长石呈针状。

FIG. 1 shows the influence of billet reheat time and temperature on ultimate tensile strength.

图1示出了坯料再加热时间和温度对极限拉伸强度的影响。

FIGS. 1 and 2 show the influence of billet temperature and time on ultimate tensile strength and tensile yield strength.

图1和2示出了坯料温度和时间对极限拉伸强度和拉伸屈服强度的影响。

Marc software, the two-dimensional simulation of isothermal extrusion forming process of globoidal cam was made. The influence of the different model cavity concave wedge angle a on the performance of filling billets was analyzed. It provided an important basis for the realization of cambered cam isothermal compression and the optimization of die structure.

用MSC。 Marc软件对弧面凸轮等温挤压成形过程进行了二维模拟，具体分析了不同凹模型腔楔角α对坯料填充性能的影响，为实现弧面凸轮等温挤压成形和优化模具结构提供了重要依据。

Based on the method of numerical simulation, the diameter of steel billet, entrance half angle of concave die and the dimension of spline were analyzed for the forming force on the spline processing with the help of a rigid-plasticity finite element software Deform 3D.

借助刚塑性有限元软件Deform-3D，采用数值模拟的方法分析了矩形花键轴冷挤压过程中，坯料直径、凹模入模半角及键齿尺寸对花键成形力的影响。

Study on the protection of the coatings in preventing oxidation and decarbonization of steel and iron materials during heat treatment;2. The present and prospect of semisolid steel and iron forming technology were discussed.

重点叙述了国内外各种钢在半固态成型过程中的组织演变机理及其力学性能，并介绍了半固态的坯料制备和成型工艺，对钢铁材料半固态成型技术的现状及发展趋势进行了分析讨论。

It is for the first time that the effect of temperature and tensile force on the threshold deformation and the thickness ratio after bond was studied.

3与某厂合作，结合控制气氛轧制复合工艺，首次研究了坯料加热温度和轧制张力对轧制复合临界变形程度和复合后厚比的影响规律。

The effect of temperature and tensile force on the threshold deformation and the thickness ratio after bond was mainly studied under the condition of control atmosphere rolling process.

结合控制气氛轧制复合工艺，研究了轧制张力和坯料加热温度对轧制复合临界变形程度和复合后厚比的影响规律。

The second, according to mapping function of blank and product sections, and to many interpolating functions along model-cavity vertical surface, paper has built mathematics model, fluid surface function of special-shaped product plastic deformation and velocity field, gotten basis theory for metal forming prediction, for example empty drawing metal pipe thickness homogeneity and special-shaped product fluid regular, die parameter optimization and integration research of die CAD/CAM.

根据拔制坯料和制品截面映射函数和模腔纵向多种插值函数（直线型、凸型、凹型和三次多项式型），建立了相似异型材、圆形坯料——异型材和异型材——异型材三维金属拔制塑性成形的数学模型和异型材塑性成形的流面方程及流动场方程，为预报金属成形规律（如：空拔管壁均化、异型材流动规律），模腔参数优化及其CAD／CAM一体化研究提供了理论基础。

Main Products: African valuable floor blank: AFROMOSIA (commonly known as the United States and pigeon peas), PANGA PANGA, MKURUTI, MKARATI at the same time supply of these four species of sheet metal and generous, and Sudan to provide the African teak (age 60), receiving orders, while the floor can provide blank spot.

主营产品：非洲名贵地板坯料：AFROMOSIA、PANGA PANGA、MKURUTI、MKARATI同时供应以上四个品种的板材和大方，并且提供非洲苏丹柚木（60年树龄），接受订货，同时地板坯料可以提供现货。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。