The original ingate was enlarged by side cutting and roof cutting under the condition of filling behind wall by grouting, and then be supported and reinforced by the secondary support technology. 原马头门断面不能满足矿井安全需要,需对原马头门进行断面刷大,采用刷帮挑顶技术。
A Study on EPC Temperature Field and Filling Property of Automobile Al Ingate 进气歧管消失模铸造温度场及充型特性的研究
Acentric ingates are used to set on the moving mould and slag-collector is set at the end of ingate and at converging zone of liquid metal from two sides. 选择偏心的分支浇道,并将浇道设置在动模一侧。在浇道的末端和两侧金属液汇集区域分别设置集渣包。
Application of Super Length Bored Cast-in-place Pile Post Grouting inGate to the east 桩底后注浆超长灌注桩在东方之门工程中的应用
The general procedures for constructing subway are as follows: first excavate the shaft, then horizontal pass, finally ingate. 地铁施工中一般采取先竖井继而横通道后开马头门进行正线施工的施工工序。
Study on Repair and control technology for failed ingate in deep soft rock of mine shaft 深部软岩井筒马头门破坏修复治理技术研究
Ingate Support Structure and Application in Deep Mine Shaft with Complicated Geological Conditions 复杂地质条件下深井马头门支护结构及应用
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 crack in investment castings is commonly created around ingate due to easily forming superheating at root of ingate. 铸件内浇道根部易出现过热,裂纹一般产生在靠近内浇道处。
Effects of SSS die casting processing parameters on properties of ADC12 aluminum alloy castings were examined by a standard tensile testing specimen with different ingate configurations. 研究了不同内浇口速度、内浇口形状对超低速ADC12铝合金压铸件性能的影响规律,探讨了不同内浇口速度和尺寸对铸件微观组织及力学性能的影响。
A novel concept is adopted to design gating system based on the bottom pouring system with stable filling, in which the ingate outlet velocity is as the bottleneck to control the flow velocity of liquid metal in whole gating system. 采用底注式平稳充型的方案来设计浇注系统,把液流在内浇道的出口速度作为限制瓶颈,它控制金属液在整个浇注系统的流动速度。
Using short, thin, wide ingate and chill to prevent the shrinkage defects, casting yield was improved by 3%. 采用短、薄、宽的内浇道和冷铁工艺,消除球铁飞轮铸件的缩孔缺陷,铸造工艺出品率提高3%;
Technology of Ingate Enlarging and Reinforcement 马头门扩修与加固技术
The Optimization Design of the Ingate of Casting by Mathematical Statistics and Computer Aided Design of Pouring Process 铸件内浇道数理统计优化设计及浇注工艺微机辅助设计
The grain size and SDAS increase with the decrease of the distance from the cross section to the ingate, reduce with the increasing of section thickness. 对于同一截面而言,晶粒度和二次枝晶间距均随截面壁厚的增加而减小,对于不同截面,晶粒度和二次枝晶间距随着所在截面与浇冒口的距离减小而增大。
It is found that the shape and size of ingate of thin walled plate casting have a tremendous influence on the temperature field during solidification and its quality. 发现内浇口的形状和尺寸对铸件凝固过程中的温度分布及铸件品质影响很大。
The computer simulation results showed that the effects of ingate dimension and ingate location on the rheo-diecasting were relatively small, and the casting process-design was easily to be done. 模拟结果显示,半固态流变成形铸件充型过程受内浇口尺寸和内浇口位置影响相对较小,铸件工艺设计灵活。
The influences of ingate dimension upon the mould filling process of die-casting was investigated. 考查了内浇口尺寸对压铸填充过程的影响。
The distribution model of carbon concentration between coating and molten steel bled off ingate along the flow direction of mold filling during the surface carburizing of steel casting in EPC process has been presented. 本文描述了消失模铸钢件表面增碳过程中,由内浇道沿充型流线方向钢液与涂层界面间碳的浓度分布模型;
The technology of grinding ball by centrifugal casting, the rotational speed, the method for calculation of ingate area and factors influencing technological process were introduced. 介绍了离心铸造磨球的工艺,以及转速、内浇口断面积计算方法和影响工艺过程的因素。
Improvement of Ingate Design for Large Plain Parts in Investment Castings 精密铸件大平面上内浇道设置方法的改进
It is suggested to apply the principle of effective gravity and equivalent pressure head to calculate the rotational speed and ingate area in the processing of grinding ball by centrifugal casting. 在离心铸球工艺中,可应用有效重度和等效压头原理计算转速和内浇口断面积。
In order to prevent casting defects, the combined feeding technology is designed using the proportional solidification theory, in which the top pouring, dispersed ingate intake, combined feeding of gating system and riser are adopted. 为了防止铸件产生铸造缺陷,运用均衡凝固理论,采用顶注、内浇道分散引入、浇注系统和冒口联合补缩工艺。
It is shown from practice that the dimension of gate system can be varied within a large range and the ingate position and construction of gating system are more sensitive to the quality of castings. 实践表明,浇注系统的尺寸可以在一个较大范围内变化,而浇注系统的结构形式和内浇口引入位置的正确与否,对铸件质量更为敏感。
The mould filling processes of experimental sample casting, which changed ingate dimension were simulated by the numerical simulation program, and the simulation results were in accord with the experimental results. 模拟了实验试样优化浇注系统前后的铸件充型过程,其模拟结果与相似条件下成形的实验结果充型特征基本吻合。
Concrete technological measures integrated with typical products are given to improve the balance of ingate action and distribution condition of melted current filling in the mold. 本文还结合典型的生产实例,对提高内浇口作用的均衡性,改善充型液流分配状况,给出具体的工艺措施。
The emphases of non-riser foundry technology are to balance steel liquid temperature on different position, reduce the difference in solidifying temperature, put the ingate in the thin wall position of linear board. 无冒口铸造工艺设计着重在均衡各部位钢液温度,减小凝固温差,内浇口开在壁薄处等方面进行工艺设计。
Application of Arc Ingate in Investment Casting 弧形内浇道在精铸件工艺设计中的应用
The results show that the submerged nozzle ingate angle and depth of its immersion should decrease gradually with the lowering of casting speed. 结果表明,随着拉速的降低,水口的上倾角大小和浸入深度应逐渐减小。
The Hydraulic Calculation of Ingate Areas for Step Gating System 阶梯式浇注系统内浇道面积的水力计算