铸钢

This paper deals with the granular carbides formation from hot deformation in high chromium cast steel .

本文探讨了热变形高铬铸钢中颗粒状碳化物的形成。

ABSTRACT In our country, more than 70% steel castings and large iron castings are produced by water glass mould and core sand process.

我国70％以上铸钢和大型铸铁件是应用水玻璃砂工艺生产的，年消耗水玻璃30余万吨，水玻璃砂600余万吨。

ABSTRACT In our country, more than 70% steel castings and large iron castings are produced by water glass mould and core sand process. The annual consumption of water glass and its sand is more than 300, 000 and 6, 000, 000 tons respectively.

我国70％以上铸钢和大型铸铁件是应用水玻璃砂工艺生产的，年消耗水玻璃30余万吨，水玻璃砂600余万吨。

Mechanical Jacks System: High strength and ultra-thick gears reduction device, alloy steel augers etc.

机械传动部：高强厚齿变速传动装置、合金铸钢螺旋绞刀等。

The effects of different cooling medium on microstructure and mechanical properties of new type bainite cast steel were studied.

研究了不同冷却介质对新型贝氏体铸钢组织和力学性能的影响。

The results show that the microstructure of the cast steel quenched at 920 ℃ and cooled by air is fine bainite.

研究发现铸钢经920℃空淬后，获得了细小的贝氏体组织。

Hot tearing is one of the most serious failures in production of steel castings.

热裂是铸钢件生产中最严重的铸造缺陷之一。

The company was equipped with many kinds of equipments including: the Direct-Reader Spectrograph, Magnetic particle inspection and Ultrasonic testing, the Hydraulic Universal Testing Machine with Computer-Screen Display. Pendulum-lmpact Testing Machine, Large Metallographic Microscope, and Large vertical lathe, Mobile Face Milling Machine ect. The measurement, precision, the surface finish, property and the internal quality of the steel castings and the ductile irons are all company with national and international standards.

公司铸钢车间采用呋喃树脂砂造型工艺、电弧炉+LF精炼炉炼钢、抛喷丸表面处理、煤气热处理炉热处理，配备有德国康诚直读式光谱仪、磁粉探伤及超声波探伤、微机屏显万能材料试验机、冲击试验机、金相显微镜等检测设备和大型立车、移动式端面铣床等加工设备，铸件尺寸、精度、表面光洁度、机械性能和内部质量均符合国家和国际标准。

Through analyzing the temperature field and stress field of typical steel castings some casting parameters as modulus, the distance of feeding head, cold iron are validated and modified, which is in accordance with the production-lines.

通过选取典型的铸钢件，采用实验的方法，对温度场、应力场、模数、冒口补缩距离、外冷铁等铸造工艺参数进行验证并加以修改，使其符合生产实际。

At least 2 years experience in casting/foundry field, steel or iron preferred.

具有至少两年从事铸造工作经验，有铸钢或铸铁经验的优先。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。