查询词典 shrinkage cavity

In this paper, analysis on the fissuring accident of ZGMn13Cr2Mo antifriction tup is performed, and the reason is believed to lie in serious casting defects of shrinkage cavity , porosity and inclusion.

对ZGMn13Cr2Mo耐磨锤头的断裂事故进行了分析，主要原因是存在着严重的铸造缺陷：缩孔、疏松和夹杂物。

The mechanism of the inclusion and shrinkage cavity in high-strength brasses produced by bottom running method was analyzed from the point of view of production technology.

通过实际生产从工艺角度分析了底注法生产窄结晶温度范围高强度黄铜时夹杂、缩孔缺陷的产生机理。

After technology improvement, the used material reduces, and the crack, shrinkage cavity of end face and puckering don't exist in the furcation part.

工艺改进后，材料减少，原来存在的裂纹、缩口以及接头处参差不齐的问题得到彻底地解决。

It is proposed that the runner location should be first to be selected to ensure molten metal filling along the die wall in order to reduce melt flow resistance and then ingate should be located in the heavy section of the workpiece to which the melt would be filled at the beginning. As a result, the applied pressure could be transmitted fluently to avoid shrinkage cavity and to ensure castings quality.

指出浇道位置的选择首先要保证金属液沿着型壁顺序充填，以减少金属液的流动阻力；内浇道应使液态金属从制件厚壁处开始充填，以利压力的传递，消除缩孔，保证制件的质量。

Above the temperature field calculating, shrinkage cavity, microporosity was predicted by using Niyama criteria.

IMR3D在温度场模拟基础上，应用了Niyama判据对铸件可能产生的缩孔疏松类缺陷进行了预测。

The present paper analyzes causes to the breakdown of the wire rod such as the central shrinkage cavity and carbon segregation, surface transverse cracks, harmful structure of bulky pearlite and web shaped carbonide and puts forward a few relevant measures for improvement in the physical product quality and reduction of fracture rate of the wire rod including proper control of the casting temperature,drawing speed, intensity of secondary cooling as well as adjustment of the intensity of control rolling and accelerated cooling and optimization of the drawing parameters.

通过对中心缩孔和碳偏析、表面横裂纹、粗大珠光体或网状碳化物不良组织等引起断丝原因的分析，提出通过合理控制浇注温度、拉速、二冷强度、控轧控冷强度及拉拔工艺参数等措施，改进盘条实物质量，降低断丝率。关键词 SWRH82B/SAE1080；脆断；质量分析；工艺控制

It has been found that its formation is caused by shrinkage cavity descending below thermal insulating sinkhead of ingot mould and silicate inclusion separating the metal of rail web.

通过低倍金相和扫描电镜观察及能谱分析，得出50kg／m钢轨轨腰分层缺陷是由于钢锭头部缩孔降到钢锭本体截口以下，硅酸盐夹杂物破坏钢轨轨腰金属连续性造成的。

Adding Te powder in the costing of sand core can effectively prevent shrinkage cavity and channel from producing.

碲粉的加入可防止贯穿型缩孔缩松和沟槽的产生。

Based on the analysis of formation mechanism of shrinkage, dispersed shrinkage, gas cavity and blow hole shrinkage in the brake hub castings of Santana car, some methods are put forward to solve these problems.

本文在对桑塔纳轿车后制动毂的缩松、缩孔、气孔、气缩孔等孔洞类缺陷进行机理分析的基础上，提出了一些解决的措施，并在实际生产中取得了明显的效

A probability calculation formula used for the cavity dimension of injection mold is derived on the basis of analysing the variation rule of plastic shrinkage rate, and a quantitative relation among the variation of plastic shrinkage rate, plastics dimension tole-rance, manufacturing tolerance and wear allowance is discussed.

文摘：在分析塑料收缩率波动规律的基础上，导出了注塑模成型零件工作尺寸的概率计算公式，讨论了塑料收缩率波动范围、塑件尺寸公差、制造公差以及修模裕磨量之间的关系。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐