Jetting Method in Patternless Casting Manufacturing Technique

In this paper, by studying the different kinds of jetting system in patternless casting manufacturing (PCM) technique, the different types of jetting mode are tested which affect whether PCM process can be done successful. The two different kinds of jetting device and their control circuits are designed based on which the relationship between the jetting system and amount of the catalyst flow is analyzed. The experiments show that the amount of the catalyst by using discrete jetting mode in the discrete jetting device is much lower than that by using continuous jetting mode in the discrete jetting device and in the continuous device when the pressured is fixed. At the same time, in the discrete jetting mode the amount of the catalyst flow can also be changed by adjusting the pulse frequency and its duty cycle, this can ensure the strength of the sand mould. The flow of catalyst in this discrete jetting device can match the scanning speed of the jetting device in real time which will improve the resolution and building precision of casting mould. When the amount of the catalyst jetting is too large, PCM process will fail.     

Effective Factors on Forming Precision in Patternless Casting Manufacturing Technique

The patternless casting manufacturing (PCM) technique, which adopts a new concept of double scanning method, combines the principle of discreteness and deposition with resin-bonded sand technique. This paper is to evaluate the dimensional accuracy of sand mould on PCM. The two important factors-the liquid penetration rule in the space of particles and the shape and dimension of the agglomeration unit body, which influence the process parameters such as scanning speed, layer thickness, liquid flux on dimension accuracy, and surface qualities, were investigated systematically, thus the theoretical basis for these parameters was provided. Experiments on rapid manufacturing of sand mould were carried out, and the results of the free penetration and the constraint penetration well verified the relationship of the two factors and the process parameters.     

Effective Factors on Forming Precision in Patternless Casting Manufacturing Technique

The patternless casting manufacturing (PCM) technique, which adopts a new concept of double scanning method, combines the principle of discreteness and deposition with resin-bonded sand technique. This paper is to evaluate the dimensional accuracy of sand mould on PCM. The two important factors—the liquid penetration rule in the space of particles and the shape and dimension of the agglomeration unit body, which influence the process parameters such as scanning speed, layer thickness, liquid flux on dimension accuracy, and surface qualities, were investigated systematically, thus the theoretical basis for these parameters was provided. Experiments on rapid manufacturing of sand mould were carried out, and the results of the free penetration and the constraint penetration well verified the relationship of the two factors and the process parameters.     

射水法建造塑性砼防渗墙技术在工程中的应用

介绍了塑性砼防渗墙的施工步骤及技术特性，对射水法造墙技术的技术要点进行了总结和阐述。     

基于快速成型制造技术的滴客快速制造方法研究

针对节水灌溉设备中滴管的嵌入式迷宫流道，应用快速成型制造技术进行了滴管的设计及快速模具制度，研究内容包括：应用参数化设计思想进行滴管CAD设计；以精密模具制造技术为核心进行滴管CAD工艺设计和快速模具制造（RT）工艺模型的生成；应用快速成型制造技术进行样件的制备和功能试验，完成了滴管设计的快速试验和修改；进行金属喷涂快速注塑模具的制造，实现了产品和模具设计－验证－制造的集成化。     

无模铸造成形技术在材控专业人才培养中的应用

基于先进的无模铸造成形技术,开展了材料成型及控制工程专业的人才培养应用与实践。将无模铸造成形技术应用于铸造工艺实验、专业认知实践、毕业设计、大学生创新计划等教学环节,提高了人才培养质量,培养了学生的创新意识,提升了学生工程实践能力。     

不同材质砼浇灌技术

文章通过施工中的实际操作经验，详细地介绍了纲纤维砼与普通砼的相互浇筑过程，采取了有效的方法来尽量减少施工缝的出现度消除其不利的影响因素。     

麦秸刨花板生产工艺简介

介绍了麦秸普通刨花板和麦秸定向刨花板的一种可行的生产工艺,提出了有关的工艺条件参数,对制得的板子进行性能测试。     

虚拟现实技术在工程设计和制造中的应用

本文概述当代信息科学主要是数字信息科学的发展所提出的虚拟现实技术的重要意义 ,主要特征 ,发展概况 ,探讨了虚拟现实技术在工程设计和机械制造技术中的应用。     

CSP轧辊的制造工艺

轧辊制造技术的发展将随着轧机和轧钢技术的进步而发展。介绍了连铸连轧轧辊的技术条件和性能要求及其铸造生产过程；通过合理的制造工艺生产出与国外相当的CSP轧辊，满足了用户需求。     

熔模铸造中某些特殊件的铸造工艺及分析

本文详细说明了熔模铸造中某些特殊件的特殊工艺；指出了特殊件易出现的缺陷；提供了科学、可靠的工艺方法。     

金属半固态铸造技术及其应用前景

从金属半固态铸造，金属半固态铸造成形过程，金属半固态铸造的优点等方面，论述了金属半固态铸造技术及其应用前景。     

绿色制造技术发展的对策研究

简要叙述了绿色制造技术的概念,分析了绿色制造技术在我国发展中存在的问题,并根据我国制造业的现状,对绿色制造技术在我国的发展提出了几点建议,为推进机械产品的绿色制造、实现机械制造业的可持续发展提供决策参考。     

摩擦焊技术在气体发生器研制生产中的应用

摩擦焊是一种固相连接方法,以其优质、高效、低耗和环保的突出优点在汽车零部件的制造中得到了大量的应用.本文介绍了摩擦焊技术在汽车安全气囊气体发生器研制过程中的具体应用.     

层状金属复合材料技术创新及发展趋势综述

根据2016年10月由上海市有色金属学会于上海举行的“2016国际层状金属复合材料论坛暨第四届中国铝基复合材料技术与应用研讨会”上26位中国专家的演讲交流,综述了近期中国金属复合材料技术创新成果以及发展趋势.     

连铸技术经济评价方法

在深入现场调查研究的基础上,概括并分析了一些企业现行的计算和评价方法;介绍了连铸技术经济评价的基本原则;提出了连铸技术经济效益的计算和评价方法。     

浇铸成形环氧树脂基复合材料板的制备技术

以环氧树脂、甲基四氢苯酐、石英砂为主要原料,通过正交实验,采用浇铸法制备了环氧树脂基复合材料,对其硬度、耐强酸强碱性、抗有机溶剂腐蚀性能、热变形温度(0.45 MPa)、复合材料内部有无气泡进行了测试和研究.讨论了环氧树脂、石英砂用量、最终烘烤温度3个因素对复合材料板性能的影响,得到最优化的配方比例.在此基础之上,研究了复合材料板的耐强酸、强碱性和抗有机溶剂腐蚀性.结果表明,环氧树脂添加量为总质量的14%,石英砂用量为总质量的70%,最终烘烤温度200℃,复合材料板巴氏硬度达到54 HBa,热变形温度(0.45 MPa)达到240℃.制备的复合材料板具有较好的耐强酸强碱性和抗有机溶剂腐蚀性能.     

古代青铜器铸造工艺研究现状

古代的青铜文物不但在艺术方面的成就令人惊叹,其铸造工艺也使后人为之折服。为了更好的研究古代青铜器的铸造工艺,介绍了理论分析法和实验分析法两大类现代研究方法,每类又细分为多种不同的研究方法,并以实例说明了这些方法对于古代青铜器的铸造工艺的研究是行之有效的。     

古代青铜器铸造工艺研究现状

古代的青铜文物不但在艺术方面的成就令人惊叹,其铸造工艺也使后人为之折服.为了更好的研究古代青铜器的铸造工艺,介绍了理论分析法和实验分析法两大类现代研究方法,每类又细分为多种不同的研究方法,并以实例说明了这些方法对于古代青铜器的铸造工艺的研究是行之有效的.     

Data Fusion Method for Manufacturing Measurement

A data fusion method of online multisensors is prop os ed in this paper based on artificial neuron. First, the dynamic data fusion mode l on artificial neuron is built. Then the calibration of data fusion is discusse d with self-adaptive weighing technique. Finally performance of the method is d emonstrated by an online vibration measurement case. The results show that the f used data are more stable, sensitive, accurate, reliable than that of single sen sor data.Data Fusion Method for Manufacturing Measure...