During the long-term operation, mallets of the forging hammers are exposed to thermal fatigue due to the cyclic temperature changes and impact loads. Taking into account very high price, and a risk of buying frequently the new parts, the necessity of their reparation becomes obvious. The forging hammer mallet (Figure 1), is primarily exposed to the impact compressive loads, and partially also t...

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Date Received: 25 September, 1997 Accepted: 12 December, 1997 Introduction Before I expose my subject, I would like to pay tribute to the memory of Dr. Brock Chisholm, first Director-General of the World Health Organization, whose memory inspired the establishment of this lecture. Those who did so obviously hoped to create a chain of inspiration leading from the root of the Organization into th...

Semi-solid processing (SSP) is a popular near-net-shape forming technology for metals, while its application is still limited in titanium alloy mainly due to its low formability. Recent works showed that SSP could effectively enhance the formability and mechanical properties of titanium alloys. The processing parameters such as temperature and forging rate/ratio, are directly correlated with th...

This article presents the new theoretical concept of environing media, which is developed to offer critical insight into how processes mediation affect we perceive of, manage and use environment. Building on that environment has been in a continuous slow process change now escalating due human impacts, sketches history environmental are intertwined. Taking agriculture as case for development, i...

This paper presents a comparative study of Continuous Stirred Tank Reactor concentration control using Particle Swam Optimization and Bacterial Forging Optimization. Continuous stirred tank reactor plays a very important role in process industry. This paper presents the optimal design of PID controller based on Particle Swarm Optimization and Bacterial Forging Optimization. The first step is th...

This paper describes the possibilities and conditions of the closed-die flashless forging process using conventional mechanical presses and equipment. The technique of driven gear forging with an internal flash or with special die design has been developed. The quality of forgings is comparable to that achievable on Hatebur presses. Furthermore the problem of how to increase shift production un...