Heat Treat ment of Die and Mould Oriented Concurrent Design

Many disadvantages exist in the traditional die design method which belongs to serial pattern. It is well known that heat treatment is highly important to the dies. A new idea of concurrent design for heat treatment process of die and mould was developed in order to overcome the existent shortcomings of heat treatment process. Heat treatment CAD/CAE was integrated with concurrent circumstance and the relevant model was built. These investigations can remarkably improve efficiency, reduce cost and ensure quality of R and D for products.

Mould filling ability and microstructure of aluminum alloy under electromagnetic die casting

In order to solve the mould filling problem of large thin walled aluminum alloy castings effectively, a new casting technology called electromagnetic die casting has been developed. Emphasis has laid on studying the mould filling ability and microstructure under the mentioned method. The results show that the mould filling ability of A357 is increasing continually with the increasing of the input voltage, that is, the magnetic induction intensity. The pressure head of the molten metal increases from the lowest one at the input of the mould to the highest one at the end of the mould while in a conventional mould the pressure head depends invariably on the sprue height. Under electromagnetic die casting, the grains of A357 alloy are refined, and the pattern of eutectic silicon of alloy changes from rough plate to smooth strip.

DIE&MOULD CHINA2002精品荟萃

我国模具制造业的快速发展使得我国模具市场成为国内外著名模具制造商和模具加工设备制造商眼中的一块肥肉 ,也促使了中国国际模具技术和设备展览会规模一届比一届大 ,水平一届比一届高。今年 5月 10～ 14日在上海新国际博览中心举办的第 9届中国国际模具技术和设备展览会在参展单位、展出规模、展商和展品档次等各个方面都是历届模展中最大和最高的一次。文章根据记者在DIE&MOULDCHINA 2 0 0 2上的所见所闻 ,从众多的展品中挑选出一些水平高、代表性强的加工机床及相关设备加以介绍 。

The Convention of Die Casting Industry

The 8th China International Diecasting Congress & Exhibition June 17-22,2012 Shanghai Rhea Lakeview Hotel Shanghai New International Expo Centre(SNIEC) Organized by the Foundry Institution of Chinese Mechanical Engineering Society(FICMES) and the Productivity Promotion Center of Foundry Industry of China,the 8th China International Diecasting Congress&Exhibition is to beheld on June 17-22,2012 in Shanghai.This convention will providean opportunity for the diecasting professionals from China and the rest of the world to meet and discuss frontier technical development indie casting industry。

Research and development of gas induced semi-solid process for industrial applications

Several rheocasting processes are developed or applied worldwide in the metal forming industry.One of the new rheocasting processes is the gas induced semi-solid(GISS) process.The GISS process utilizes the principle of rapid heat extraction and vigorous local extraction using the injection of fine gas bubbles through a graphite diffuser.Several forming processes such as die casting,squeeze casting,gravity casting,and rheo-extrusion of the semi-solid slurries prepared by the GISS process have also been conducted.The GISS process is capable of processing various alloys including cast aluminum alloys,die casting aluminum alloys,wrought aluminum alloys,and zinc alloys.The GISS process is currently developed to be used commercially in the industry with the focus on forming semi-solid slurries containing low fractions solid(< 0.25) into parts.The research and development activities of the GISS process were discussed and the status of the industrial developments of this process was reported.

Industrial development of gas induced semi-solid process

The gas induced semi-solid(GISS) is a rheocasting process that produces semi-solid slurry by applying fine gas bubble injection through a graphite diffuser.The process is developed to be used in the die casting industry.To apply the GISS process with a die casting process,a GISS maker unit is designed and attached to a conventional die casting machine with little modifications.The commercial parts are developed and produced by the GISS die casting process.The GISS die casting shows the feasibility to produce industrial parts with aluminum 7075 and A356 with lower porosity than liquid die casting.

Technique of pulse electrochemical finishing in molds and dies

Surface finishing is one of the most important processes in mould and die making. This process is necessary not only for smoothing the surface of die or mould, but also for removing the surface layer, which has been damaged by the preceding machining process and finally improve the performances and lifetime of moulds to a large extent. It has been reported that between 30% and 40% of the total time required to manufacture a die or mold is spent on finishing operations, most of which are performed by skilled workers employing traditional techniques. At present, key problems in mould and die finishing technology can improve the finishing efficiency, consistency and quality at reduced costs. A new and high efficiency unconventional finishing technology, pulse electrochemical finishing was introduced. Experiments were done in neutral nitrate electrolytes. The influence of electrolyte composition, intereletrode gap, finishing time, flow quality, current density, compositions of steel materials and pulse parameters on the resulting surface finishing was investigated. Results indicate that pulse parameters have important influence on operations finishing and the proper selection of pulse parameters can lead to both good smoothing efficiency and surface quality at low costs.

Focusing on Technology and Services, Competing in China Die Casting Market

The Asia-Pacific Die Casting Industry Exhibition 2005, organized by Foundry Institution of Chinese Mechanical Engineering Society （FICMES）, was held in INTEX Shanghai, China on August 14-17, 2005. On August 16th, the journalists of CHINA FOUNDRY journal visited five exhibitors on the spot of exhibition. They are： Mr. Roland FINK, General manager of Frech （Shanghai） Die Casting Machine Co. Ltd.; Mr. Thomas STROBL, General manager of Buhler Equipment Engineering （Wuxi） Co. Ltd., Switzerland; Mr. WANG Tong, Manager of ABB Engineering （Shanghai） Co. Ltd.; Ms. Karen LUO, National Sales Manager-Die Casting, Chem-Trend （Shanghai） Trading Co. Ltd.; and Mr. David ZHOU, Sales Supervisor of Acheson, the National Starch ＆ Chemical （Shanghai） Company.

基于改性PP成型的工控机电路板支撑架注射模设计

针对工控机电路板支撑架大型塑件的成型,选用了一种玻纤改性增强聚丙烯(PP)复合材料用于塑件的注射成型。模具结构为三板模结构,分3次开模打开。为保证塑件模腔充填均衡性、饱满性而设计了两个点浇口用于模腔的浇注。针对塑件二级子特征较多,特别是异型螺柱深筋位较多的特点,设计了多个局部镶件用于这些局部特征的成型,在提高局部成型镶件强度的同时,降低了这些成型件的加工难度。针对模腔局部位置排气难点,设置了多个透气镶件以增强排气。设置了锁扣机构、定距拉杆机构用于模具的开模闭模控制;设计了弹料机构用于流道废料的可靠脱模、定位机构以确保塑件的成型精度和模具工作寿命;3个滑块机构用于塑件侧壁直壁及直壁上侧孔的成型与脱模。模具结构形式合理,成型件便于加工且实用可靠,能为同类模具设计提供有益借鉴。

打印机滚筒导板多点浇口注塑模设计

针对打印机滚筒导板塑件的工业设计结构特点及使用改性合金聚碳酸酯/丙烯腈-丁二烯-苯乙烯塑料成型的生产要求,设计了一副多点点浇口三板模具用于该塑件的注射成型。模具中的模腔布局为一模一腔,以使塑件成型精度控制在MT3~4级。不同于常规三板模具,在该模具中采取了以下设计措施来保证塑件的成型要求:一是通过主导柱、副导柱、模仁定位锥台等的设置,保证了塑件基本成型尺寸的成型精度;二是通过增加镶件排气措施、优化注射成型工艺参数等措施,有效降低和控制了塑件成型后的变形量,保证了塑件的成型形状精度,所增设的成型镶件有益于模腔排气,镶件间隙小于0.02 mm,镶件设计时须设计孔边扩距为1 mm,以降低镶件配模难度,避免镶件间隙飞边发生;三是为提高流道废料和塑件的冷却效率,脱料板中开设有2条?10 mm冷却水路,模腔成型件中开设有10条?10 mm冷却水路。模具中还设置了2个斜导柱滑块侧抽芯机构用于塑件两侧端面的脱模,塑件的最终脱模由多根顶针均衡顶出脱模。

基于“互联网+教育”的模具设计与制造专业课程教学改革的探索

针对模具设计与制造专业课程理论逻辑性强、过于抽象的教学难点,以互联网为基础,利用网络教学平台,通过线上、线下混合的教学方法及教学反思,不断推动“互联网+教育”在模具设计与制造专业课程中的应用,促进专业课程教学改革,以提高学生学习的自主性,激发学生学习的热情,提高教学质量。

基于专利视角的广西模具产业现状分析与发展建议

以专利分析方法为基础,研究广西模具技术发展和专利布局情况,从专利申请趋势、专利区域布局、主要申请人、技术构成、法律状态等方面开展分析,通过信息采集、数据处理、数据可视化等方法分析广西模具产业发展现状、技术热点研究趋势及各地市模具产业的技术特点和优势,最后结合专利分析总结针对广西模具产业发展提出合理建议。

基于专利视角下分析国内模具产业发展现状与分布情况

结合国家关于模具产业方面的鼓励政策和模具产业领域的专利申请趋势,对国内模具产业技术及地域分布进行分析,通过信息采集、数据处理、数据可视化等方法,分析模具产业发展态势、技术热点研发趋势、产业高端人才情况,并重点分析了模具产业领域专利申请数量排名靠前的5位申请人,为模具产业发展提供知识产权支撑。

基于大数据的模具专业精准教学研究与应用

通过分析大数据在教育领域的应用现状及其在模具专业教学中的潜在价值,研究设计了基于大数据分析的教学策略。通过对高职院校模具专业的实证研究,评估了这些策略在提升学习效率、优化教学资源分配以及增强学生学习体验方面的实际效果。研究结果表明,大数据驱动的精准教学不仅能够有效提高学生的学习成绩,还能增强教师的教学能力,研究成果为技术与教育的深度融合提供实践案例和理论基础,为教育领域带来持续的创新动力,在面对快速发展的工业和技术环境时,能够更好地帮助学生应对未来的挑战。

游戏化教学策略在模具设计课程中的实施与评估

探讨了游戏化教学策略在模具设计课程中的实施并进行了效果评估,通过综合运用理论分析和实证研究,考察了游戏化教学的核心元素及其如何融入模具设计教学中。通过引入游戏元素,分析其对提升学生学习动机、认知能力、情感态度和合作交流的影响,并分析和评估该策略的有效性,发现游戏化教学提高了学生的课堂参与度和学习成效,学生对游戏元素的接受度高,反馈积极,显示游戏化教学在增强学习体验方面的有效性。此外,教学实践的成果分析表明,游戏化教学有助于学生更好地掌握模具设计的专业知识和技能,为高职模具设计课程的教学改革提供了新的视角和方法,展示了游戏化教学在技术教育领域的潜力和价值。

基于专利视觉的3D打印技术在模具制造领域的应用研究

以incoPat构建3D打印技术及其在模具制造领域应用的检索分析数据库,采用定量、定性分析法,从申请趋势、区域布局、主要申请人、技术发展趋势、核心专利等多角度对专利数据进行分析。全球3D打印技术处于快速增长期,其在模具制造领域的应用越来越广,中国在专利数量上位居全球前列,紧跟全球技术发展热点,基于专利视觉开展3D打印技术在模具制造领域应用的分析,为中国模具制造3D打印技术发展提供技术参考。

基于SWOT分析的模具专业群产教融合人才培养路径研究

产教融合是推动职业教育适应产业发展、提升学生就业率的有效途径。为应对产业结构转型升级而引发的企业岗位调整对技术技能型人才就业带来的冲击,对目前高职院校产教融合的具体实施途径和特点进行分类总结。以模具设计与制造专业群为研究对象,利用SWOT分析法对专业群面临的内部因素(优势和劣势)和外部因素(机会和威胁)进行综合分析,提出促进专业群产教融合发展、稳步提升学生就业率的有效人才培养路径。