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Working principle of RH vacuum degassing method and DH vacuum degassing method
Vacuum deaeration Methods- RH and DH Vacuum
Deaeration
Vacuum deaeration is a method used to remove dissolved gases from water or other solutions. There are two main types of vacuum deaeration: RH (recirculation and headspace) and DH (direct headspace) vacuum deaeration. These methods can be use......
1075 
Rachel
Characteristic Causes of Residual Shrinkage Cavity and Its Judgment and Treatment
Introduction
Remaining shrinkage hole is a common defect in castings, caused by a number of possible factors related to the manufacturing process. This paper attempts to thoroughly review the causes and prevention of remaining shrinkage hole defects in investment castings, and to discuss various ......
Safety operating rules that lathe workers should abide by
Rails Security Rules
Railways are an important component of our transportation infrastructure and are used to transport goods and passengers around the country. However, they can be hazardous places if operated incorrectly, so it is important to understand and obey the rules of railway security a......
Cupola
The Crucible
Written by Arthur Miller, the Crucible is a play set in the Salem village of Massachusetts in 1692. The play’s protagonist, John Procter, is a farmer who is accused, along with other townspeople, of trying to practice witchcraft. He finds himself in the midst of the Salem witch tria......
scraping
The Value of a Good Education
In the modern world, we often hear about the value of a good education. For some of us, it seems like an abstract concept and something that is hard to understand, but for those of us who have been educated, the value of a good education is easy to recognize. Educati......
Focus on Green Manufacturing Technology in Machinery Industry
Green Manufacturing Technology in Mechanical Industry
Introduction
In recent years, the global manufacturing industry has been under continued pressure to improve energy efficiency, increase productivity and reduce environmental impacts. It is imperative for manufacturers to design and implement......
Welding Safety and Hygiene
Welding Safety and Health
Welding is a process used to join two pieces of metal or other materials through a high temperature flame or an electric arc. The resulting bond is strong and reliable, making it useful in many applications. However, a proficient welder must learn and understand the asso......
The demand for bearings in the machine tool industry
Long before the industrial revolution of the late 18th century, engineering and metal working had been practiced by skilled artisans and craftsmen. The industry was generally limited to individual or small family-owned businesses. The invention of efficient machine tools, including lathes, during ......
Machining allowance
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In manufacturing, there is often unavoidable waste that happens during the production processes. This is especially true when factories are producing items in large quantities or with complex technology. When material or resources are wasted in production, it is known as “scrap” or “c......
Research on Reducing Sulfur in Hot Metal
Research on Reduction of Sulphur in Iron Melt
Abstract
Sulphur is a harmful and unwanted impurity in iron melt, and its control is a long-term task for ironmaking industry. In this paper, the reduction methods for different types of sulphur sources in iron melt are discussed. According to the di......
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