钢

Chemical compositionl and the heat treatment conditions of the low alloy cast mild steel were studied in this paper.

对低碳低合金抗磨钢的化学成分、热处理工艺规程，进行了详细的分析和研究，摸索出获得高韧性、高硬度抗磨钢的热处理工艺规程，从而扩大了铸造抗磨钢的应用范围。

Type PG-NC NON-Crystallized ring is a new product developed by our corporation Adopting a mordent advanced technology melting the race surface of the ring and then cooling rapidly, makes the race surface of the ring into non-rcystallized metal structure, The property of PG-NC-NON-Crystallized ring is better than that of the ordinary rings.

PC-NC型非晶态钢领是我们公司研制的新一代产品。钢领采用高新技术，用激光融熔急冷改性处理工艺，使钢领工作表面具有非晶态金属结构。

North China are large-scale production of cast steel, stainless steel, niobium steel, heat-resistant steel castings foundry business.

是华北地区规模较大的生产铸钢、不锈钢、铌钢、耐热钢等铸件的铸造企业。

This paper summarizes the research on fatigue of steel bridges and orthotropic steel bridge decks in the world, which give an important reference to the fatigue research and design of steel bridges in our country.

本文对国外钢桥及正交异性钢桥面板的疲劳研究作了详细的综述，这对于我国钢桥疲劳研究和设计具有重要的参考和借鉴作用。

The pastille system is consisted of rotoformer and cooler. The rotofomer drop the liquid on the belt evenly and the drop solidified as the belt is moving forward continuously.

上海精涛—造粒系统由旋转造粒机头和钢带冷却机组成，造粒机头将物料成颗粒状，均匀的分布在钢带上，随着钢带的向前运行，逐步固化成型，最终形成大小、高度、外形高度均匀一致的半球形固态颗粒。

The main products include shovel, pickaxe and fork.

主营产品为：钢锹，钢镐，钢叉等。

So, in this paper, H13 isused as study object, its quencher and temper technics are studied too.

因此，本文决定以H13钢作为研究对象，并对其进行淬火、回火工艺研究，结果表明，H13钢采用二级盐浴分级淬火，比采用一级盐浴分级淬火能使H13钢获得更大的冲击韧性。

Based on finite element analysis software ANSYS,and according to the forms and characteristics of load on steel structure of tripper of stacker/reclaimer,topological optimization is made to the simplified steel structure of tripper,and optimum layout of auxiliary inclined arm is obtained,with the main body frame of steel structure of tripper determined.

基于有限元分析软件ANSYS，根据堆取料机尾车钢结构承载的形式与特点，对简化的尾车钢结构进行拓朴优化，得到了尾车钢结构在主体框架确定情况下辅助斜梁的最佳布置形式。

It is based on the Jiaxing Yingdu Grid and Steel Structure Company Limited which was founded in 2002 and developed by way of assets optimization and recomposition within the group. It is established for adapting the requirements of the fast development of the company business on steel structure and for realizing the strategic goal of creating the first-level bridge steel structure company.

它是在2002年成立的嘉兴市盈都网架钢构有限公司基础上，为积极适应企业桥梁钢构业务快速发展的要求，实现打造一流桥梁钢构公司的战略目标，通过集团内部资产优化重组而发展起来的。

The results show that the microstructures of these three kinds of coating are different from those of the matrix (20 steel). The wear resistance of the flame spray coating is 4. 9 times that of the matrix. This is caused by the existance of hard noncrystal microparticals. The wear resistance of the coating by flame spray welding is 6. 3 times that of the matrix. The reason is that the fine crystal grains can be formed and the solution strengthening, dispersion hardening can be induced by these alloy elements. The resistance of the laser remelt coating is 8. 8 times that of the matrix. This is due to the solution strengthening, dispersion hardening and the existence of very hard dendritic crystal, eutectic and martensite in the microstructure.

作者指出，喷涂层由于层内有一定数量高硬度的合金非晶质点存在，其耐磨性是钢基体的4.9倍；喷熔层内合金晶化产生的晶粒细小，合金元素能起固溶强化作用，也能生成化合物产生弥散硬化作用，故此耐磨性是钢基体的6.3倍；激光涂敷层除所含合金元素产生的固溶强化和弥散硬化作用外，表层组织为高硬度的枝晶+共晶和马氏体，故其耐磨性是钢基体的8.8倍。

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。