scholarly journals Steelmaking Technology for the Last 100 Years: Toward Highly Efficient Mass-Production Systems for High-Quality Steels

2014 ◽  
Vol 100 (1) ◽  
pp. 31-58 ◽  
Author(s):  
Toshihiko Emi
2020 ◽  
Vol 56 (2) ◽  
pp. 221-224 ◽  
Author(s):  
Hao Huang ◽  
Ming Gao ◽  
Yihong Kang ◽  
Jia Li ◽  
Jiahong Wang ◽  
...  

A facile plasma–liquid technique is designed and demonstrated for rapid and mass production of few-layered phosphorene.


1998 ◽  
Vol 55 (spe) ◽  
pp. 67-73 ◽  
Author(s):  
D.K. Struve

A ten day aerated water soak was developed as a seed conditioning treatment for red oak (Quercus rubra L.). Conditioned seeds had higher germination completeness, uniformity and speed compared to control seeds. Seeds could be conditioned under a wide range of temperatures and durations. Conditioned seeds were maintained at 7(0)C for 30 days without loss of seed quality. During conditioning, pericarps split in response to seed hydration. Split pericarps could be used as a pre-sowing indicator for high quality seeds. Seed conditioning was ineffective on dormant seeds. Increased crop uniformity and higher stand establishment can be realized by subjecting red oak acorns to an aerated water soak treatment followed by selecting seeds with split pericarps. These results are especially important in container production systems where limited numbers of value seeds are available.


2020 ◽  
Vol 14 (4) ◽  
pp. 535-544
Author(s):  
Andreas Bretz ◽  
Eberhard Abele ◽  
Matthias Weigold

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.


2006 ◽  
pp. 23-30 ◽  
Author(s):  
Milan Vukicevic

One of the specificities of the large-serial and mass production is the almost neglected percentage of prepare-finish time in the production cycle. In the conditions of today dominant discontinuous production, it becomes a significant element of the production cycle. The eastern (Japan) doctrine of increasing the flexibility of the production systems, is based inter alia also on the extreme reduction of the prepare-finish time. For this reason, the aim of this study was to identify the types and percentages of individual jobs within the group of prepare-finish jobs. The sample consisted of 3 (three) production systems for the production of joinery, with the discontinuous production system. The research shows that the percentage of time of the jobs installation of work instruments, regulation of processing regime, and removal of work instruments is extremely long and that it ranges between 11.83% and 18.93% of the shift time. The reasons of the high percentage of these jobs are the wide range of products and the absence of the rationalisation of prepare-finish jobs. Within the efforts to minimize the effects of disruption and to increase the flexibility of the production systems, the rationalisation of prepare-finish jobs is the unavoidable condition.


Author(s):  
А. П. Палій

Забезпечення високоякісного промивання доїльно-молочного обладнання поряд із застосуванням висо-коефективних технологій та технічних засобів є ви-рішальним чинником в отриманні молока найвищої якості. Встановлено, що існує три основні способи формування пробок миючого розчину в молокопрово-ді, механізми утворення яких залежать від конструк-ції автомата промивки й вибраної програми здійс-нення зазначеної технологічної операції. Отримані результати є передумовою вдосконалення системи контролю параметрів процесу доїння великої рогатої худоби та промивки доїльно-молочного обладнання. High-quality washing milking equipment along with the use of highly efficient technologies and equipment is a critical factor in obtaining of high quality milk. It has been established that there are three basic methods of forming plugs in a milk cleaning solution, formation mechanisms which depend on the design of the washing machine and the program for the implementation of selected processing operation. The results are a prerequisite of improving the system of control the parameters of milking cattle and washing milking equipment.


2018 ◽  
Vol 5 (10) ◽  
pp. 2641-2647 ◽  
Author(s):  
Wenna Liu ◽  
Jinju Zheng ◽  
Sheng Cao ◽  
Lin Wang ◽  
Fengmei Gao ◽  
...  

A novel microwave-assisted hot injection strategy for mass production of high quality Mn2+:CsPbCl3 NCs was reported.


Author(s):  
Emre Bilgin Sarı ◽  
Sabri Erdem

Seru production system is a flexible, cost-effective, workforce competence-oriented manufacturing management system that provides the opportunity to respond quickly to customer demand. As in parallel to technology and physical improvements, customer demands are also effective for development of production systems. The impact of change in demand has been seen on changeover from job shop to mass production, flexible, and lean manufacturing systems. Seru production system is more appropriate for targeting work both cost-effectively like mass production and maximum diversification like job shop production. This chapter clarifies the Seru production system and explain its use and benefits in the clothing industry. In the application, a shirt production is illustrated according to the principles of mass production, lean production, and Seru production. Thus, different types of production systems have been benchmarked. There will be potential study areas for proving the efficiency of Seru soon.


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