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Design and Fabrication of a Prototype Pneumatic Cylinder 气动缸原型的设计与制造
Pub Date : 2023-05-10 DOI: 10.11648/j.ie.20230701.11
Nguyen Xuan Quynh, Tran Thanh Tung
: Pneumatic systems play a crucial role in the manufacturing industry. Many industrial machine require pneumatic systems to operate at present. In industrial machine systems, pneumatic cylinders are one of the machine parts that operate with a high level of intensity; therefore, it is necessary to replace and maintain pneumatic cylinders. The purpose of this paper is to propose the design and production of a prototype pneumatic cylinder that is inexpensive and suitable for single-unit production. The article proposes an approach for determining, developing
气动系统在制造业中起着至关重要的作用。目前许多工业机器都需要气动系统来运行。在工业机器系统中,气动气缸是高强度运行的机器部件之一;因此,更换和维护气动气缸是必要的。本文的目的是提出一种廉价的、适合单件生产的原型气缸的设计和生产。本文提出了一种确定、发展的方法
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引用次数: 0
Application of High Tensile (E-550 Grade) Structural Plates for Built-up Columns and Beams in Boiler Structure 高强度(E-550级)结构板在锅炉结构中的应用
Pub Date : 2021-10-12 DOI: 10.11648/J.IE.20210502.13
Brajesh Kumar Chaurasia, Abhishek Sharma, A. Singh
In the past Boiler Structure has been designed using mainly carbon steel plates of Grade E250 or E350. This paper presents and analyses the application of High Tensile steel (E550 Grade as per IS: 2062) in Heavy structure like Boiler Supporting Steel Structure. Boiler supporting Structure consists of major weight contribution in Columns and Beams which are stress governed, the objective is to optimize the structural quantity through application of High Tensile Steel with higher yield stress. This paper describes the complete analytical approach adopted in analysis & design, conclusion and recommendation. Latest structural plate rolling technology provides excellent combination of high strength, Toughness and weldability for High Tensile Steel, these properties of steel plate are most critical mechanical properties for steel structure design. The key microstructural control is obtained in the plate rolling mills through on-line heat treatment immediately after accelerated cooling during Thermo-Mechanical Controlled Processing (TMCP). Thermo-Mechanical Controlled Processing technology is recent development applied in latest steel structural plate rolling mills for rolling with thickness up to 120mm. Niobium (Nb) as a micro alloy in the steel enables to achieve a substantial grain refinement, very fine-grained microstructure improves toughness and increases the yield strength. The TMCP process enables the required tensile properties in structural plates with leaner chemical composition. Leaner chemical composition, especially lower carbon content and lower carbon equivalents improves weldability. Improved weldability benefits the fabricator for fabrication of plate fabricated built-up profiles which is the main requirement in Heavy Structure like Boiler Supporting Steel Structure. Detailed analysis and design of typical 660 MW coal fired Boiler structure has resulted in 25% structural weight saving in case of High Tensile steel application (E550 Grade) as compared with commonly used carbon steel (E250/E350 Grade). Also, this analysis concludes that use of high tensile steel should be limited to Columns and Beams only which are stress governed and where yield strength is the main design criteria.
过去的锅炉结构设计主要采用E250或E350级碳钢板。介绍并分析了高强度钢(按IS: 2062 E550等级)在锅炉支撑钢结构等重型结构中的应用。锅炉支承结构的重量主要由应力控制的柱和梁组成,其目的是通过采用具有较高屈服应力的高强钢来优化结构质量。本文阐述了分析设计中采用的完整分析方法、结论和建议。最新的结构板轧制技术为高强钢提供了高强度、高韧性和可焊性的优良组合,这些性能是钢结构设计中最关键的力学性能。在热机械控制加工(TMCP)中,通过加速冷却后立即进行在线热处理,获得了关键的组织控制。热机械控制加工技术是近年来发展起来的一项新技术,应用于轧制厚度达120mm的新型钢结构板轧机。铌(Nb)作为一种微合金在钢中能够实现显著的晶粒细化,极细的晶粒组织改善了韧性,提高了屈服强度。TMCP工艺使结构板具有所需的拉伸性能,化学成分更少。更少的化学成分,特别是更低的碳含量和更低的碳当量,提高了可焊性。提高可焊性有利于制造商制造板式装配式型材,这是锅炉支撑钢结构等重型结构的主要要求。对典型的660兆瓦燃煤锅炉结构进行了详细的分析和设计,结果表明,与常用的碳钢(E250/E350级)相比,采用高强度钢(E550级)的结构重量减轻了25%。此外,该分析得出结论,高强度钢的使用应仅限于柱和梁,这是应力控制和屈服强度是主要的设计标准。
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引用次数: 0
Contemporary Quality Management Control Chart 当代质量管理控制图
Pub Date : 2021-08-27 DOI: 10.11648/J.IE.20210502.11
Ibrahim Bedane, T. Jima
Quality always has been an integral part of virtually all products and services. It is continuously meeting exceeding customer and supplier needs, requirements and expectations in all aspects. However, our awareness of its importance and the introduction of formal methods for quality control and improvement have been an evolutionary development. This article present Core concepts of contemporary quality management Quality Control techniques Control Chart to measure, analyze and control quality by continuously monitoring, controlling and managing process maintaining sampling to continuously Improvable targets by continuously producing and offering services within low and lower Percentage Defectives in meeting exceeding customer and supplier needs, requirements and expectations. Sampling, Sample size and sample numbers of Proportion of population covered with sampling Rational sub group, are two basic for quality monitoring and control to manage quality of products as well as services within Continuously improving tolerable number and/or Percentage Defectives. To monitor the quality characteristics of a process, appropriate Control chart used in quality management capable of showing the evolution over time of the behavior of the quality characteristics and detecting situations that seem to present certain anomalies must be used. Thus, This Article deals with the application of selected Quality Management and propose Control chart based on Sample size and sample numbers of sampling Rational sub group and Proportion of population covered with γ% Confidence of sample size n to monitor process using number of defectives, through which we can achieve continuous quality improvement. In this paper, Control chart involves using statistical and mathematical techniques were used to measure and analyze the variation in processes intent to monitor product quality and maintain processes to fixed targets. this article show how to use proposed control charts to monitor discrete data and present the assumptions behind the charts, their application, and their interpretation to measure, analyze and control quality by monitoring and managing quality maintaining processes to continuously Improvable targets to manufacture a product as designed within low and lower Percentage Defectives. The advantage of these tools is that they can identify the effects of the processes that cause unnatural variability in processes that result of Defectives and poor quality in offering services within low and lower Percentage Defectives in meeting exceeding customer and supplier needs.
质量一直是几乎所有产品和服务的一个组成部分。在各方面不断超越客户和供应商的需求、要求和期望。然而,我们对其重要性的认识以及对质量控制和改进的正式方法的引入是一个渐进的发展过程。本文介绍了当代质量管理的核心概念质量控制技术控制图通过持续监测、控制和管理过程来测量、分析和控制质量,通过持续生产和提供低缺品率的服务来持续改进目标,以满足客户和供应商的需求、要求和期望。抽样,样本量和样本数抽样所涵盖的人口比例的合理子组,是两个基本的质量监测和控制,以管理产品和服务的质量在持续改进的可容忍数量和/或百分比缺陷。为了监视过程的质量特性,必须使用质量管理中使用的适当的控制图,该控制图能够显示质量特性的行为随时间的演变,并检测似乎呈现某些异常的情况。因此,本文探讨了选择质量管理的应用,提出了基于抽样合理子组的样本量和样本数以及样本容量置信度为γ%的总体比例的控制图,利用缺陷数对过程进行监控,从而实现质量的持续改进。在本文中,控制图涉及使用统计和数学技术来测量和分析过程意图的变化,以监控产品质量并保持过程达到固定目标。本文展示了如何使用建议的控制图来监视离散数据,并展示了图表背后的假设,它们的应用,以及它们的解释,以通过监视和管理质量维护过程来测量、分析和控制质量,以不断改进目标,以在越来越低的缺陷率内制造出设计的产品。这些工具的优点是,它们可以识别过程的影响,这些过程导致过程中的非自然变化,从而导致在满足客户和供方需求时,以越来越低的缺陷百分比提供服务的缺陷和质量差。
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引用次数: 1
Design a Half Bridge Inverter and a Full Bridge Inverter with Overload Protection Circuit Using IC555 用IC555设计带过载保护电路的半桥逆变器和全桥逆变器
Pub Date : 2021-08-23 DOI: 10.11648/j.ie.20210501.13
S. S. Shukir
Inverter is a power electronic circuit that converts the direct voltage (DC) to an alternating voltage (AC). Inverters are used in a range of applications from consumer electronics and industrial to renewable energy. The flexible capability to create an AC signal from a DC voltage, frequency and speed control are all accomplished from the use of Inverter. Inverter takes the voltage and passes it through switching elements which turn the DC signal into an AC square wave signal. This wave is then passes through filter which turns it into a sine wave signal of the required voltage. This paper presents design an inverter with overcurrent protection circuit without microcontroller, where the MOSFET gate driver is controlled by pulses generated from 555 timer, and with using a low pass filter and setup transformer, a low cost sine wave inverter has been obtained. The heart of the design is 555 timer. The design is achieved in Proteus 8. Simulation results demonstrated that a single phase sine wave (50 Hz) has been generated by a half bridge inverter and a full bridge inverter and protection circuit from current higher than 4.5A has been built. The reliability and accuracy of the system are verified through an experiment.
逆变器是一种将直流电压转换为交流电压的电力电子电路。逆变器用于从消费电子和工业到可再生能源的一系列应用。从直流电压、频率和速度控制中创建交流信号的灵活能力都是通过使用逆变器完成的。逆变器将电压通过开关元件,将直流信号转换成交流方波信号。这个波然后通过过滤器,将其变成所需电压的正弦波信号。本文设计了一种无单片机的带过流保护电路的逆变器,利用555定时器产生的脉冲控制MOSFET栅极驱动器,利用低通滤波器和设置变压器,得到了低成本的正弦波逆变器。设计的核心是555定时器。该设计是在Proteus 8中实现的。仿真结果表明,半桥式逆变器和全桥式逆变器均能产生50 Hz的单相正弦波,并建立了电流大于4.5A的保护电路。通过实验验证了该系统的可靠性和准确性。
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引用次数: 3
Minimizing Costs of Poor Quality for Glass Container Bottles Production Using Six Sigma’s Dmaic Methodology: A Case Study in a Bottle and Glass Share Company 使用六西格玛的Dmaic方法最小化玻璃容器瓶生产的低质量成本:一个瓶子和玻璃股份公司的案例研究
Pub Date : 2021-08-23 DOI: 10.11648/j.ie.20210501.12
Besufekad Legesse, Sisay Geremew
Even if many tools are available to reduce defect, six sigma’s DMAIC model is one of a tool which significantly reduce defect if it is applied with appropriate methodology. In this work defect reduction is achieved using DMAIC model as a means. At the define phase major product types and defects are crafted and identified by using brainstorming, supplier-input-process-output-customer diagram, Pareto Diagram and failure mode and effect analysis. So that poor bead diameter and uneven glass distribution have been selected from the glass making processes. At the measuring phase data has taken and observed to display how the process behaves. Control charts, capability analysis and six pack capability analysis are applied to understand the process condition. Based on the data obtained from the preceding phase analysis undertaken using Fishbone diagram. The graph illustrates the root causes that are in need to improve. After the analysis phase identified the root causes i.e. process parameters, the improvement phase has held by using Taguchi technique to optimize the process parameters. The Taguchi analysis identified the main factors which determine the processes output factors. After the optimum value is decided the result is collected to check its effectiveness. these improvements decreased defects per million opportunities (DPMO) from 149,997.8 to 50,000 and reduced poor quality cost from ETB 429,540.3 to ETB 143,178 per day and the result showed that defect has reduced by 30% compared with the previous output.
即使有许多工具可用于减少缺陷,六西格玛的DMAIC模型是一个工具,如果应用适当的方法,可以显著减少缺陷。在这项工作中,缺陷的减少是使用DMAIC模型作为手段来实现的。在定义阶段,主要的产品类型和缺陷是通过头脑风暴、供应商-输入-过程-输出-客户图、帕累托图以及失效模式和影响分析来设计和识别的。因此,玻璃制造工艺中选择了玻璃珠直径差、玻璃分布不均匀的玻璃。在测量阶段,采集和观察数据以显示过程的行为。应用控制图、能力分析和六包能力分析来了解工艺条件。根据前期所得数据,利用鱼骨图进行了阶段分析。该图说明了需要改进的根本原因。在分析阶段确定了根本原因即工艺参数后,采用田口技术对工艺参数进行优化,进入改进阶段。田口分析确定了决定过程输出因素的主要因素。在确定最优值后,收集结果以检验其有效性。这些改进将每百万机会的缺陷(DPMO)从149,997.8减少到50,000,并将不良质量成本从每天的ETB 429,540.3减少到ETB 143,178,结果表明与以前的产量相比,缺陷减少了30%。
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引用次数: 1
Productivity Improvement and Reduction of Lead Time in Manufacturing Industry Using Lean Tools 利用精益工具提高生产效率和缩短交货时间
Pub Date : 2021-04-26 DOI: 10.11648/J.IE.20210501.11
S. Parthasarathi, M. K. Prabhu, J Krishanamani, L Mitun, G. Vellingiri, C. Rahul
To look at the current arrangement of a creation line in a shop floor of controlling stuff box fabricating industry also, to improve the profitability utilizing lean strategy absent really any influencing current working frameworks. Technique/ Examination: Broad scopes of lean assembling devices are accessible to deal with a wide range of issues looked by changed fabricating businesses. It likewise helps for effective expense decrease of the assembling part and to guarantee the nature of maker and client. Discoveries: The basic Non-Value added Activities (NVA) were perceived and probabilities needed for improvement has been perceived. Value Stream Mapping (VSM) has the standing of finding squander during assembling and business measure which encourage distinguishing and eliminating or stream the worth added steps furthermore, to kill the non-esteem added steps. Application/Improvements: After achievement of fitting lean instruments, it was discovered that the all out arrangement time was consolidated by around 180 minutes and process duration was dense by about 98 minutes which eventually decreases the lead time and builds the efficiency. A lean manufacturing initiative focuses on cost reduction and increases in turnover by systematically and continuously eliminating non-value-added activities. In today's competitive market, lean is turning out to be "the solution" to manufacturing industries across the spectrum for survival and success.
看看控制物料箱制造行业的车间生产线的当前安排,利用精益战略提高盈利能力,没有任何影响当前工作框架。技术/检查:广泛的精益装配设备可用于处理变化的制造企业所关注的各种问题。这也有助于有效降低装配件的成本,保证制造商和客户的性质。发现:发现了基本的非增值活动(NVA),并发现了改进所需的可能性。价值流图(价值流图)具有发现装配过程中浪费的地位和鼓励区分、消除或流化增值步骤的业务措施,进而扼杀无价值增值步骤。应用/改进:在实现精益仪器的装配后,发现所有的安排时间缩短了180分钟左右,过程时间缩短了98分钟左右,最终缩短了交货时间,提高了效率。精益生产计划的重点是通过系统地、持续地消除非增值活动来降低成本和增加营业额。在当今竞争激烈的市场中,精益正成为制造业生存和成功的“解决方案”。
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引用次数: 0
Influential Factors for Undertaking BPR on Construction Industry to Improve Contractors Performance in Tanzania 坦桑尼亚建筑业实施业务流程再造提高承包商绩效的影响因素
Pub Date : 2021-01-01 DOI: 10.11648/j.ie.20210502.12
Ramadhani Said Tekka
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引用次数: 0
Causes and Countermeasures of Strong Vibration of Pipe End Thickener 管端加厚机强振动的原因及对策
Pub Date : 2020-01-13 DOI: 10.11648/J.IE.20190302.12
Li Tongyi
The pipe end thickening machine is a pressure processing equipment for thickening the pipe end of plastic material. The process of thickening the tubing end is to heat one end of the tubing to a certain temperature, push it into the die hall, and close the die cylinder under the push of hydraulic oil to press the end of the pipe. Then, squeeze into the cylinder forward, and the extrusion head on the piston rod thickens the end of the pipe. Complete the thickening process at the end of the pipe. In the production process, due to the great pressure change of the hydraulic system, the vibration of the system is violent, resulting in pipeline cracking, which seriously affects the production. Through the analysis of hydraulic system of pipe end thickener, it is found that the fundamental cause of the system pressure relief vibration is that when the hydraulic system is unloading, the volume of the hydraulic cylinder unloading cavity is large and the energy is accumulated. The problem can be solved by adjusting the section where the actual stroke of the hydraulic cylinder is located in the total stroke to reduce the volume of the pressure relief chamber and the energy released when the pressure is unloaded.
管端加厚机是对塑料材料的管端进行加厚的压力加工设备。管端加厚的过程是将管端加热到一定温度后,推入模厅,在液压油的推动下关闭模缸,压紧管端。然后,向前挤进气缸,活塞杆上的挤压头使管端加厚。在管端完成加厚工序。在生产过程中,由于液压系统压力变化大,系统振动剧烈,造成管路开裂,严重影响生产。通过对管端加厚机液压系统的分析,发现系统泄压振动的根本原因是液压系统卸载时,液压缸卸载腔体积大,能量积累。通过调整液压缸实际行程在总行程中的位置,减小泄压室的体积和卸压时释放的能量,可以解决这一问题。
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引用次数: 0
Identification and Prioritize Strategic Directions and Initiatives of Sustainable Supply Chains Based on Reversed Logistic Through Phase Multi-Criteria Modeled 基于阶段多准则模型的逆向物流可持续供应链战略方向与举措识别与优先排序
Pub Date : 2019-12-20 DOI: 10.11648/J.IE.20190302.11
Sasan Ahmadi
Return and renewed using of used products has changed one of the logistic important activities with early development of industries, this caused to doing rules on this basis and also increasing awareness among people for keeping living-environment and decreasing wastage. Therefore industries need strategic programming and ripple initiatives of stable securing. Therefore the aim of this research was identification and prioritize strategic directions and initiatives of sustainable supply chains based on reversed logistics through phase multi-criteria models (case study: Dena Shiraz tire industry Company). This research was done in two different phases; in first phase, standards of strategic orientations and ripple initiatives of stable securing was identified and deciphered based on reversed logistic, based on study of scientific texts and taking ideas of expert persons (5 basic standards and 28 secondary standards) and alighted basis of questionnaire preparation. In second phase, identified standards was prioritized through phase multi-criteria models and taking ideas of expert persons of tire industry.
随着工业的早期发展,废旧产品的回收和更新利用已经成为物流的重要活动之一,在此基础上制定了规章制度,也提高了人们保护生活环境和减少浪费的意识。因此,行业需要战略规划和稳定安全的涟漪举措。因此,本研究的目的是通过阶段多标准模型确定并优先考虑基于逆向物流的可持续供应链的战略方向和举措(案例研究:Dena Shiraz轮胎工业公司)。这项研究分为两个不同的阶段;第一阶段,在科学文献研究和专家意见的基础上,采用逆向逻辑法(5个基本标准和28个次级标准),确定并解读稳定保障的战略导向和涟漪举措标准,并确定问卷编制依据。第二阶段,通过阶段多准则模型,结合轮胎行业专家的意见,对已确定的标准进行排序。
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引用次数: 1
RF Communication and IoT Paradigms System Proposal for Effective Consumption and Equity Distribution of Community Water in Developing Countries: A Case Study 发展中国家社区用水有效消费和公平分配的射频通信和物联网范式系统建议:案例研究
Pub Date : 2019-07-24 DOI: 10.11648/J.IE.20190301.12
P. Tsafack, F. Hutu, E. Tanyi, Bruno Allard
Water scarcity poses a serious threat to the population in the most areas of developing countries. In addition to that, the traditional manual nearby approach of following up the water distribution network is unable to ensure an effective and equity use of the small water resources available. A dedicated real-time monitoring system based on radio frequency (RF) communication and internet of things (IoT) paradigms is proposed in this paper. This monitoring system is essential and constitutes a proposed solution for the local water management and equity distribution of the available poor water resources. An alert system recalls users to any abnormal water usage to reduce water loss or to check and solve usual leakages. A customer’s water consumption visualization as well as a setting of his desired consumption alert system are performed using a home dashboard; the monitoring of the system by the water utility company is achieved using a web-based system through Thingspeak cloud computing platform. For an immediate and easy local implementation of the prototype, the system technology was chosen in already validated most cases; in other words, Commercial-Off-The-Shelf (COTS) components were used. For better and optimum results, most dedicated similar COTS components will be selected using the already running systems.
缺水对发展中国家大部分地区的人口构成严重威胁。除此之外,跟踪供水网络的传统手工附近方法无法确保有效和公平地利用现有的少量水资源。提出了一种基于射频通信和物联网(IoT)模式的专用实时监控系统。这一监测系统是必不可少的,是为当地水资源管理和公平分配现有贫瘠水资源提出的解决办法。警报系统提醒用户注意任何不正常的用水情况,以减少水的损失或检查和解决通常的泄漏。使用家庭仪表板执行客户的用水量可视化以及他所需的用水量警报系统的设置;水务公司对系统的监控是通过Thingspeak云计算平台使用基于web的系统来实现的。为了在本地实现原型,在大多数已经验证的情况下选择了系统技术;换句话说,使用了商用现货(COTS)组件。为了获得更好和最优的结果,大多数专用的类似COTS组件将使用已经运行的系统进行选择。
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引用次数: 0
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Industrial & Engineering Chemistry
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