shrinkage porosity
英 [ˈʃrɪŋkɪdʒ pɔːˈrɒsəti]
美 [ˈʃrɪŋkɪdʒ pɔːˈrɑːsəti]
网络 缩孔; 钢锭疏松; 收缩孔隙度; 缩松
双语例句
- According to the simulated temperature fields and solid fraction, the hot spot and shrinkage porosity are not found in the bolster casting, so the new casting process is feasible.
温度场和固相分数的模拟结果表明，铸件没有产生热节和缩孔缺陷，表明了新工艺的可行性。 - There easily exists shrinkage porosity due to superheat of ingate root in large plain parts investment casting. Ingot defects may be broadly classified into internal flaws and surface flaws. Internal flaws are caused by shrinkage.
大平面铸件常在内浇道根部出现过热，在该处产生缩松缺陷。钢锭缺陷广义上可分为内部缺陷和表面缺陷。内部缺陷是因收缩引起的。 - The reasons resulting in the shrinkage porosity, gas-hole and impacted sand in bronze castings were analyzed.
分析了锡青铜叶轮铸件出现的缩孔、气孔、冲砂等缺陷的原因。 - Shrinkage porosity ( hole) in thick-walled complex parts can be eliminated by chilling method.
对于壁厚复杂铸件常出现的缩松、缩孔问题，采用激冷方式得到解决； - Elimination of Shrinkage Porosity in Low Pressure Casting Large Castings with Varied Thickness
低压铸造大型壁厚不均铸件缩松的解决 - The casting process was optimized by the simulation and the shrinkage hole, shrinkage porosity in the ductile iron hub were eliminated successfully.
通过模拟优化了铸造工艺，成功地消除了轮毂铸造过程中产生的缩孔、缩松缺陷。 - The morphology of austenite dendrites in shrinkage porosity in nodular iron is displayed by the color etching technique and the formation mechanism of shrinkage porosity has been analyzed.
采用着色腐蚀技术，金相显示了球墨铸铁缩松区中奥氏体枝晶组织形貌，分析了球铁缩松的形成机制。 - Through rationally controlling pouring temperature, preheated temperature for mould and temperature distribution of the cast mould, the shrinkage porosity in the castings can be eliminated to obtain the castings with high and even mechanical properties.
合理控制浇注温度和铸型预热温度能有效地消除大高径比铸件内的缩松，获得力学性能高且均匀的铸件。 - Shrinkage cavity and micro shrinkage porosity have been decided to be such defect through sampling from sprocket gear casting and micro examination analysis and application of FT Star in solidification simulation.
通过对实际铸件的取样显微观察分析，并利用数值模拟软件FTStar对链轮进行了凝固模拟计算，断定缺陷大多是缩孔和缩松。 - There are shrinkage porosity and crack in strip billet, which are the main reasons resulting in rejected castings during mill machining.
带坯的表面裂纹和内部缩松是冷加工报废的主要原因。 - The austenitic dendrites in hypereutectic ductile iron are showed using coloration etching, the morphology of shrinkage porosity in ductile iron is observed by the use scanning electron microscope, hence the morphology, classification and formation conditions of austenitic dendrites in hypereutectic ductile iron have been studied.
采用着色腐蚀金相显示球铁中奥氏体枝晶，借助扫描电镜观察球铁缩松区形貌，研究了过共晶球铁中奥氏体枝晶形貌特征、分类及形成条件。 - The results show the lacuna is shrinkage porosity with high degree carbon.
结果表明，细小孔洞为富碳的缩松缺陷，为合金熔炼时碳元素引起铝液渣、气污染造成。 - At higher speed in calculation, the simulation result has reflected the development process of temperature in casting system and forecast the possibility and location of arisen disfigurement such as shrinkage and shrinkage porosity hence a scientific guidance for optimization of technology scheme in casting process.
模拟结果较真实地反映了铸造系统温度的发展过程，且运算速度较快，从而预测缩孔、缩松等缺陷出现的可能性及位置，为优化铸造工艺方案提供了科学的指导。 - The stress field was simulated based on semi-solid mechanical and rheological behaviors, and in turn the potential defects, including shrinkage porosity, shrinkage hole, hot tear and deformation tendency during solidification process were predicted to realize the design optimization of casting process for the castings.
根据准固态力学行为和流变行为，进行应力场模拟，进而预测铸件在凝固过程中产生缩松、缩孔以及热裂和变形等倾向，合理地实现了铸件的铸造工艺优化设计。 - The predication for shrinkage cavity and shrinkage porosity in castings has been accomplished to make the process design more scientific and the production cost of casting lower greatly.
实现了铸造缩孔缩松缺陷的预测，避免过去靠经验来进行铸造工艺设计，使工艺设计更具有科学性，大大降低了铸造生产成本。 - A semiquantitative prediction model of shrinkage porosity for titanium alloy castings has been established.
本论文完成了钛合金立式离心铸造过程缩松半定量化预测模型的建立。 - A numerical analysis method is presented to simulate the shrinkage porosity formation in steel castings on the basis of heat flow, interdendritic fluid flow and possible evolution of dissolved gases.
提出了预测铸钢件中缩松缺陷的数值方法，考虑了传热、枝晶间液相流动和气体析出等因素。 - In addition, a new criteria GF/ RF ( GF-critical solid fraction ratio gradient, RF-critical solid fraction rate) is proposed for shrinkage porosity prediction and has been used in foundry industry.
还提出了预测铸钢件编松的新判GF／RFGF／RF（GF为临界固相率梯度，RF为临界固相率推进速度），并在生产中得到了应用。 - It has thoroughly researched for the appropriately net divided for various steel castings, the deter-mination of criterion parameter for shrinkage cavity and shrinkage porosity and the optimization design for allowance process, and ensured that the calculation results are accurate and reliable.
对不同铸钢件如何恰当地剖分网格、确定缩孔缩松判据参数、优化补贴工艺设计等都进行了深入研究，保证了计算机数值模拟结果的精确、可靠。 - The results of numeral simulation basically is identical with that of experiment, which shows that the numeral simulation can make the technological measures optimize so as to achieve the aim eliminating shrinkage porosity and cavity of a casting.
提出了离心压力场中缩松预测的判据，将其应用到铸件数值模拟预测中，数值模拟结果与实验结果基本吻合，说明通过数值模拟可以优化工艺措施以达到消除缩孔缩松缺陷的目的。 - The common defects of the housing casting include cracks, sand drop, slag inclusion, shrinkage porosity and rough grain, etc.
机架的常见缺陷有裂纹、掉砂、夹渣、缩孔缩松和晶粒粗大等。 - The Effect of Liquid Metal Pressure on the Prediction of Shrinkage Porosity
金属液压力对缩松预测的影响 - Numerical simulation technology not only simulating the fluid field, the temperature field, stress field and the obvious micro-structure changes, but also forecasting the produce position and severe degree of shrinkage porosity, shrinkage cavity and crack etc.
采用数值模拟技术不仅可以模拟半固态铸造过程的流场、温度场、应力场及显微组织的变化，还可预测缩孔、缩松、裂纹、变形等缺陷的产生位置、形态和大小。 - And the shrinkage porosity distribution in the castings and the mechanical properties of the castings were also researched.
研究了铸件中的缩松和铸件力学性能分布特点。 - However, Ca impurity will poison the P modification efficiency in Al-Si piston alloy. Moreover, it makes the flowability of Al-Si melt worse, and increase inspiratory and shrinkage porosity. The generation of segregation brittle compounds increases the rejection ratio of castings.
钙使Al-Si活塞合金磷变质中毒，且当活塞合金中杂质钙较多时，合金熔体流动性变差，容易吸气和发生微观针孔或缩松，并产生偏析性硬脆化合物使铸件废品率上升。 - It is found by the analysis between the sand samples and the pressure-reduction samples that when testing hydrogen content of alloys. The shrinkage porosity formed by the casting is of little effect with the pressure-reduction solidification sample density method.
通过砂型试样和减压试样的对比分析可知，使用减压凝固试样密度法检测铝合金液含氢量时，铸件形成的缩松对检测结果影响较小。 - It is liable to produce various casting defects, such as coarse grain, shrinkage cavity, shrinkage porosity, hot tearing, microstructure segregation and solute segregation.
在铸造过程中容易产生各种铸造缺陷，如晶粒粗大、缩孔缩松、开裂、组织和成份偏析等。 - Because of special physical characteristics of magnesium alloy, crack, contraction cavities, shrinkage porosity, electrode adhesion and spatter.
但由于镁合金自身的独特物理性能，在采用镁合金电阻点焊过程中易出现裂纹、缩孔和缩松、电极粘附、喷溅等缺陷。 - This process can reduce the gas trapping and shrinkage porosity, and prolong the mold operating life.
这种压铸工艺能减少缸体铸件裹气和缩松缩孔缺陷，延长模具的使用寿命。