铸型

The truck cast steel three big piece type bogie is easy to maintain. But since the grate weight under spring and the large operation strength during running, it is difficult for the bogie to keep the positive position. The critical speed of the snaking motion is low, which is inapplicable for high speed running. The other type of truck bogie is H type integrative truss. Its structure is complicate relatively, which is not easy to manufacture and maintain. But it can keep the positive position of the bogie preferably. And because it is adopted the structure of axle box one series elastic suspend, the weight under spring reduces. Which achieve the effective control to wheel sets and improve the running quality of the bogie distinctly.

货车铸钢三大件式转向架便于制造维修，但因其簧下质量大，在运行中轮轨作用力大，转向架难以保持正位，蛇行运动临界速度低，不适用于高速运行；货车转向架的另一种形式是"H"型构架一体式，结构较为复杂，不便于制造和检修，但它能够较好地保持转向架的正位，而且由于采用了轴箱一系弹性悬挂结构，降低了簧下质量，实现了对轮对的有效控制，明显地改善了转向架的运行品质。

Si content have been found by analyzing a large number of samples of the cast Ductile Iron Angular bearing box.

通过对铸态球铁角型轴承箱大量取样分析，找出产生石墨漂浮的原因及适合的C、Si含量范围值。

Both the experimental analyses and computer simulation were conducted to determine the statistical relationship between the structures and mechanical properties of centrifugally cast TC4 alloy in ceramic-shell mould.

摘 要：实验与模拟计算相结合研究Ti-6Al-4V(TC4)合金在陶瓷壳型离心精铸条件下，铸件模数对凝固过程冷速的影响，以及铸件组织、性能随模数和冷速之间的统计关系。

XRD analyses indicated that both as-cast and melt-spun alloys were of the CaCu5-type structure single phase, but the crystallizability and composition homogeneity of the melt-spun alloys were improved.

XRD分析表明，铸态和快凝合金均为单相CaCu5型结构，但快凝合金的成分和结构均匀性得到明显改善，并具有较低的吸氢体积膨胀率。

The study of heated-mould continuous casting of BFe30-l-l cupronickel tube can develop a manufacturing mode including near net ...

研究热型连铸BFe30-1-1白铜管坯，发展铸造管坯—冷拔成型—成品的工艺模式，为材料加工研究开辟了一条新思路。

The results show that, when the electromagnetic field was applicated, the flowability and filling capacity of cupronickel alloy are increased, the surface cracks are eliminated, and the thin-walled cupronickel tube billets with smooth surface can be obtained due to the increase of flowability and filling capacity of cupronickel alloy. The solidification structure of the tube billets is evidently refined, the shape of Ni-rich phase changes from needle-like to bulk and the casting stress declines from 7.2 to 0.32 MPa. With the structure improving, the tensile strength and elongation increase by 5% and 36%, respectively, than those of ordinary continuously cast tube billets.

结果表明：在连铸过程中施加旋转电磁场能够提高金属液的流动性和充型能力，消除表面裂纹缺陷，从而制备出表面光滑的薄壁白铜管坯；在电磁力的作用下管坯凝固组织显著细化，富镍相由针状转化为团块状，同时铸造应力由未施加电磁场时的7.2 MPa下降至0.32 MPa；随着凝固组织的改善，施加磁场的管坯抗拉强度和伸长率与未施加磁场管坯的相比分别提高5%和36%。

Our company is both at home and abroad a few casting and welding-type fire one gun manufacturers, we can provide customers around the world aluminum alloy, copper alloy, cast iron casting type fire artillery, can also provide carbon steel, stainless steel welding-type gun fire.

我公司是目前国内外少数几家兼具铸造和焊接型消防炮厂家之一，我们可以向全世界的客户提供铝合金，铜合金，铸铁的铸造型消防炮，也可以提供碳钢，不锈钢的焊接型消防炮。

Because of the strong turbulence and atomizing during mold filling process, a two-phase turbulence model was developed to simulate fluid flow of die casting.

由于压铸充型过程具有强紊流和雾化现象，作者采用了紊流一两相流模型，使计算模型能更接近充型的实际物理状态。

The results show that the surface quality of magnesium alloy die casting improved greatly with the increase of the velocity of high-speed injection stage in a cert.

针对汽车发动机缸盖罩盖零件，采用压力传感器，通过对铸件的表观质量进行评定及铸件密度和抗拉强度的测定，系统研究了镁合金压铸过程中快速充型速度和起速位置对型腔内压力变化和铸件质量的影响。

Idlers use stamped bearing house. Using wide clearance bearing and multi-layer labyrinth seal improves service life, reduces rotation resistance and friction coefficient. Cast welding and keyless connection has been used for pulley, Hydraulic coupling and hard surface cone cylinder gear speed reducer for drive unit, angle type structure for head frame, so these improve starting performance, drive efficiency, load capacity and service life, reduce floor area and weight of equipment.

托辊采用了35°槽型前倾结构，辊子为冲压轴承座结构，大游隙轴承和册层迷宫密封，提高了寿命，降低了旋转阻力和摩擦系数，滚筒采用了铸焊结构和无健联接，驱动单元采用了液力耦合器和硬齿面圆锥圆柱齿轮减速机，头架采用角型结构，从而改善了启动性能，传动效率，承载能力和使用寿命，减少了占地面积和设备重量。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。