Furnace Technologies in Hot Stamping Concepts and Experience from Production

2014 ◽  
Vol 1063 ◽  
pp. 354-357
Author(s):  
Thomas Fuchs ◽  
Fritz Josef Ebner
Keyword(s):  
Cost Efficiency ◽  
Surface Defects ◽  
Hot Stamping ◽  
Black Box ◽  
Single Type ◽  
High Quality ◽  
Advantages And Disadvantages ◽  
Multi Level ◽  
Upper Level ◽  
Process Atmosphere

Nowadays, a furnace designer has to meet the demands of the customer precisely to allow economical production at site. Repeatable high quality throughout millions of produced parts combined with high cost efficiency is needed to stay competitive. Thus the facility has to be changed from a black-box to a glassy furnace which records and controls all important process values that define the properties of the produced parts and the consumption of the facility. Current furnace designs offer a wide variety of layouts with unique advantages and disadvantages. Single type furnace designs are well known and need the lowest investments but they also take up a lot of space and do not offer a back-up solution during maintenance or in the event of malfunctions occurring. Twin type furnaces have a higher degree of flexibility as they still allow 50% production during downtime caused by maintenance or malfunctions, so availability is higher than with single type furnaces. Double layer furnaces, which are stacked versions of the twin type furnaces, only need half of the floor space but maintenance is more complicated on the upper level. An oxygen-free furnace atmosphere is essential for the production of components in process atmosphere in order to ensure high quality results with the minimum of scale and other surface defects. This is not possible in a multi-level furnace.

Recent Patents on Detection Device of Surface Defects on Bearing Balls

2021 ◽  
Vol 14 ◽  
Author(s):  
Chengyi Pan ◽  
Junhong Tang ◽  
Guanqun Cao ◽  
Bingtao Hu
Keyword(s):  
Surface Defects ◽  
Detection Efficiency ◽  
High Surface ◽  
Detection Accuracy ◽  
High Quality ◽  
High Surface Quality ◽  
Existing Problems ◽  
Advantages And Disadvantages ◽  
Surface Detection ◽  
Scope Of Application

Background: With the continuous pursuit of high-quality and high-precision bearings in industrial production, the processing accuracy of bearing balls is increasing, and high surface quality has become the most basic requirement for high-quality bearing balls. Studying the working principle of detection device of surface defects on bearing balls is beneficial to improve the surface accuracy of bearing balls and the quality of bearings. Objective: To meet the increasing requirements for measurement accuracy and efficiency of surface detection on bearing balls, the devices and methods of surface detection on bearing balls have been improved constantly. Methods: This paper reviews various representative patents related to the detection device of surface defects on bearing balls. The advantages and disadvantages of the patents are analyzed. Results: Through tracing the characteristics of different types of the detection device of surface defects on bearing balls, the main existing problems in the current are concluded and analyzed, such as low detection accuracy, low detection efficiency, and limited scope of application, etc. The future development of patents on detection device of surface defects on bearing balls is discussed. Conclusion: The optimization and development of detection device of surface defects on bearing balls are beneficial to improve the detection accuracy and efficiency of surface defects on bearing balls, and are conducive to expand the scope of application of the detection devices. More related patents on detection device of surface defects on bearing balls will be invented.

scholarly journals Measuring the bore straightness during reaming with sensoric tools

2020 ◽  
Vol 14 (4) ◽  
pp. 535-544
Author(s):  
Andreas Bretz ◽  
Eberhard Abele ◽  
Matthias Weigold
Keyword(s):  
Mass Production ◽  
Cost Efficiency ◽  
Machine Tools ◽  
Processing Time ◽  
Process Chain ◽  
Machining Processes ◽  
High Quality ◽  
Random Samples ◽  
Hydraulic Valves ◽  
Productive Time

Abstract Reaming plays a crucial role in production to meet the high quality requirements of precision bore machining. It is either directly responsible for the final component quality or influences subsequent processes such as honing. The narrow tolerances are usually monitored by measuring random samples in mass production due to cost efficiency. Having a closer look at an exemplary process chain for the production of hydraulic valves shows the possibility to adapt the honing parameters which reduces processing time and costs. However, the bore straightness after the reaming process has to be known. In this paper an approach is presented which allows to record the bore straightness within the productive time. For this purpose, a sensory reaming system is developed. It can be used without additional components in the machine tool and thus integrated into existing machining processes. Cutting tests show that the system is able to measure the bore straightness as good as sensing probes used in machine tools.

Design optimisation for cold-formed steel residential roof truss using genetic algorithm

2018 ◽  
Vol 15 (5) ◽  
pp. 575-583
Author(s):  
Ka Yee Kok ◽  
Hieng Ho Lau ◽  
Thanh Duoc Phan ◽  
TIina Chui Huon Ting
Keyword(s):  
Genetic Algorithm ◽  
Industrial Application ◽  
Steel Structures ◽  
Single Type ◽  
Efficient Design ◽  
Design Optimisation ◽  
Content Type ◽  
Roof Truss ◽  
Cold Formed Steel ◽  
Multi Level

Purpose This paper aims to present the design optimisation using genetic algorithm (GA) to achieve the highest strength to weight (S/W) ratio, for cold-formed steel residential roof truss. Design/methodology/approach The GA developed in this research simultaneously optimises roof pitch, truss configurations, joint coordinates and applied loading of typical dual-pitched symmetrical residential roof truss. The residential roof truss was considered with incremental uniform distributed loading, in both gravitational and uplift directions. The structural analyses of trusses were executed in this GA using finite element toolbox. The ultimate strength and serviceability of trusses were checked through the design formulation implemented in GA, according to the Australian standard, AS/NZS 4600 Cold-formed Steel Structures. Findings An optimum double-Fink roof truss which possess highest S/W ratio using GA was determined, with optimum roof pitch of 15°. The optimised roof truss is suitable for industrial application with its higher S/W ratio and cost-effectiveness. The combined methodology of multi-level optimisation and simultaneous optimisation developed in this research could determine optimum roof truss with consistent S/W ratio, although with huge GA search space. Research limitations/implications The sizing of roof truss member is not optimised in this paper. Only single type of cold-formed steel section is used throughout the whole optimisation. The design of truss connection is not considered in this paper. The corresponding connection costs are not included in the proposed optimisation. Practical implications The optimum roof truss presented in this paper is suitable for industrial application with higher S/W ratio and lower cost, in either gravitational or uplift loading configurations. Originality/value This research demonstrates the approaches in combining multi-level optimisation and simultaneous optimisation to handle large number of variables and hence executed an efficient design optimisation. The GA designed in this research determines the optimum residential roof truss with highest S/W ratio, instead of lightest truss weight in previous studies.

scholarly journals The multilevel inverter with clamped-diode

2019 ◽  
Vol 14 (3) ◽  
pp. 1189
Author(s):  
Trong-Thang Nguyen
Keyword(s):  
Numerical Simulation ◽  
Circuit Design ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Control Circuit ◽  
Multilevel Inverter ◽  
Power Circuit ◽  
Advantages And Disadvantages ◽  
Multi Level ◽  
And Control

<p>In this study, the author analyzes the advantages and disadvantages of multi-level inverter compared to the traditional two-level inverter and then chose the suitable inverter. Specifically, the author analyzes and designs the three-level inverter, including the power circuit design and control circuit design. All designs are verified through the numerical simulation on Matlab. The results show that even though the three-level inverter has a low number of switches (only 12 switches), but the quality is very good: the total harmonic distortion is small; the output voltage always follows the reference voltage.</p>

scholarly journals PERSONALIZED AND PROACTIVE ONLINE SERVICES AS A PLATFORM FOR CREATING A SYSTEM OF VOLUNTARY TAX COMPLIANCE

2021 ◽  
pp. 42-48
Author(s):  
Tatyana Vladimirovna Deeva
Keyword(s):  
Swot Analysis ◽  
Tax Compliance ◽  
Digital Transformation ◽  
Global Network ◽  
High Quality ◽  
Online Services ◽  
Administrative Services ◽  
Effective Work ◽  
Advantages And Disadvantages ◽  
Slow Development

Relevance. The article reveals the actual possibilities of introducing digital technologies in the field of tax regulation, the provision of administrative services to taxpayers. The author has carried out a SWOT analysis of electronic services of the tax service in the context of digital transformation, identified the opportunities and threats to the development of digital tax administration. In the context of universal digitalization, the study of the above issues is an urgent topic. Results. It has been established that digital transformation of taxation and tax procedures is a difficult and costly task for personalized online services, therefore it has the same advantages and disadvantages. Weaknesses in the implementation of online services in the field of taxation are identified: data security problems; lack of public presentation and ignorance of taxpayers; a certain part of the population lacks access to the global network, IT infrastructure and electronic services; too slow development of e-business and government; an acute shortage of regulatory framework and information in the IT sector. Conclusions. The FTS as a service department should provide inexpensive and high-quality services. In this regard, FTS specialists must quickly respond to any facts of improper provision of services, since the high quality of tax services and the maximum number of electronic services is an indicator of effective work with taxpayers.

TRENDS IN THE USE OF PACKAGING MATERIALS AND PACKAGING METHODS FOR PRODUCTS CONTAINING LABILE BIOLOGICALLY ACTIVE SUBSTANCES

2020 ◽  
Author(s):  
Е.П. ВИКТОРОВА ◽  
А.Д. АЧМИЗ ◽  
М.В. ЛУКЬЯНЕНКО ◽  
С.О. СЕМЕНИХИН
Keyword(s):  
Biologically Active Substances ◽  
Biologically Active ◽  
Packaging Materials ◽  
High Quality ◽  
Advantages And Disadvantages ◽  
Concentrate Polymer ◽  
Oxidative Processes ◽  
Livestock Products ◽  
And Storage ◽  
Active Substances

При производстве качественной пищевой продукции особое внимание необходимо уделять ее упаковыванию и хранению. Витаминно-минеральные концентраты, используемые для приготовления пищевых продуктов и получения качественной безопасной продукции животноводства, содержат комплекс лабильных биологически активных веществ, для сохранности которых необходимо минимизировать окислительные процессы. Это обусловливает повышенные требования к упаковке таких продуктов. С целью выбора упаковочного материала и способа упаковки витаминно-минерального концентрата проведен тематический обзор публикаций отечественных и зарубежных ученых. Рассмотрены тенденции в области применения упаковочных материалов, указаны преимущества и недостатки биополимеров. На основе проведенного анализа установлено, что для упаковывания витаминно-минерального концентрата целесообразно в качестве материала упаковки использовать полимерные пленки, обладающие высокой свето- и газонепроницаемостью, позволяющей снизить скорость протекания окислительных процессов и, следовательно, сократить потери содержащихся в продукте лабильных биологически активных веществ. В качестве способа упаковки можно рекомендовать применять вакуумирование, обеспечивающее отсутствие кислорода воздуха в упаковке. When producing high-quality food products, special attention should be paid to their packaging and storage. Vitamin and mineral concentrates used for food preparation and production of high-quality safe livestock products contain a complex of labile biologically active substances, for the safety of which it is necessary to minimize oxidative processes. This leads to increased requirements for the packaging of such products. In order to select the material and method of packaging of vitamin and mineral concentrates, a thematic review of publications of domestic and foreign scientists was conducted. Trends in the use of packaging materials are considered, advantages and disadvantages of biopolymers are indicated. It was found that for packaging vitamin and mineral concentrate, polymer pellicle with high light and gas tightness, which allows reducing the rate of oxidative processes and, consequently, reducing the loss of labile biologically active substances contained in the product, should be used as a packaging material. Vacuuming, which ensures the absence of oxygen in the air in the package, can be recommended as a method of packaging.

Hot Isostatic Processing

2004 ◽  
pp. 55-60
Keyword(s):  
Aluminum Alloy ◽  
Hot Isostatic Pressing ◽  
High Quality ◽  
Advantages And Disadvantages ◽  
Radiographic Inspection ◽  
Hot Isostatic Processing ◽  
Alloy Castings ◽  
And Performance ◽  
Hip Process ◽  
Very High

Abstract Hot isostatic pressing (HIP) is a process refinement available to address internal porosity in castings. The HIP process may be used, in particular, for applications requiring very high quality and performance. This chapter discusses the principles, advantages, and disadvantages of HIP. It describes the effect of HIP on tensile properties and on the fatigue performance of aluminum alloy castings. In addition, the chapter discusses the processes involved in radiographic inspection of HIP-processed castings.

Models of Service Development and Delivery for People with Intellectual Disability

2020 ◽  
pp. 289-296
Author(s):  
Sujeet Jaydeokar ◽  
John Devapriam ◽  
Jane McCarthy ◽  
Chaya Kapugama ◽  
Sabyasachi Bhaumik
Keyword(s):  
Intellectual Disability ◽  
Service Delivery ◽  
Healthcare Services ◽  
Service Development ◽  
High Quality ◽  
Quality Healthcare ◽  
Advantages And Disadvantages ◽  
Service Delivery Models ◽  
Specialist Services ◽  
Delivery Models

It is important to ensure that people with intellectual disability (ID) have access to high quality healthcare services. There is a wide variation in the availability of services and service delivery models globally for people with ID. Reasons for these variations are examined including availability of workforce resources and the development and availability of specialist resources. Tracing the development of services across the world, the chapter goes on to review the ongoing debate on access to generalized healthcare services versus the role of specialist services. We review advantages and disadvantages of different service delivery models. While these models have evolved in response to the political, cultural, and economic environment, it is important that any development of service delivery model signs up to basic underlying principles of person-centred, right-based, and outcome-focused approach. This should be undertaken in partnership with service users and carers in the spirit of co-production and with the underlying principles of choice, inclusion, rights, and independence. Any service development should also ensure that it would meet the complex health needs of people with ID as described in the tiered model of services with an efficient use of available resources. It should be sustainable through development of skills, competencies, and capabilities of the workforce and agencies that work with people with ID. There are number of examples across countries of innovative service provisions by public, private, and voluntary sectors as described in the chapter and it is important that we learn from those models. Advocating should be an integral aspect of any service delivery; we should be constantly advocating globally for high quality healthcare based on the best available evidence for people with ID.

scholarly journals Indirect Laryngeal Surgery in the Clinical Voice Laboratory: The Renewal of a Lost Art

2000 ◽  
Vol 79 (5) ◽  
pp. 350-361 ◽  
Author(s):  
Norman D. Hogikyan ◽  
Melissa Pynnonen
Keyword(s):  
Cost Effectiveness ◽  
General Anesthesia ◽  
Recent Literature ◽  
Low Cost ◽  
Cost Effective ◽  
Topical Anesthesia ◽  
High Quality ◽  
Advantages And Disadvantages ◽  
Laryngeal Surgery ◽  
Type Of Surgery

Since the advent of precision instruments and safe techniques for direct laryngoscopic surgery under general anesthesia, indirect laryngeal surgery has become very uncommon. A review of the recent literature finds that few authors advocate indirect surgery under topical anesthesia, and many otolaryngologists dismiss this technique as being either of only historical interest or an idiosyncratic method practiced only by a handful of clinicians. The societal mandate for cost-effective healthcare and the availability of relatively low-cost, high-quality endoscopes and video equipment warrant a renewed and broader interest in this type of surgery. In this article, we review a series of 27 indirect surgical procedures performed under topical anesthesia in the clinical voice laboratory. We discuss the indications, outcomes, advantages, and disadvantages of this surgery, and we present a brief analysis of its cost-effectiveness. We conclude that indirect laryngeal surgery in the clinical voice laboratory is an effective, safe, efficient, and less costly alternative to some procedures routinely performed under general anesthesia.

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