Search results for keyword: 1950s
2000 National Standard for Fasteners
The History of Fastener National Standards
International standards for fasteners came into use in the early 1950s, when the International Standardisation Organisation (ISO) published its first technical specification manual. This manual was used to ensure the compatibility of fasteners used in th......
1040 
Nora
Analysis of various levels of lean manufacturing
Lean Manufacturing Overview
Lean manufacturing is an efficient and effective philosophy of production that minimizes waste and eliminates non-value-added activities. It is a systematic approach to increasing customer value and minimizing waste in order to reduce costs and increase productivity. T......
modern history of mechanical engineering
，写有关近代机械工程史的内容
Mechanical engineering is one of the oldest and most important engineering disciplines. Its history can be traced all the way back to the dawn of civilization, when people used simple machines to perform daily tasks. In the past two hundred years, however, it has become......
Electric processing machine tools: electrolytic processing machine tools
Electrochemical Machining (ECM)
Electrochemical machining (ECM) is a precision machining technique that utilizes chemical reactions to modify cutting tools. Rather than relying solely on mechanical cutting tools, ECM uses electricity and chemicals to achieve desired results. This can also be know......
Common sense of EFI engine maintenance
Introduction
Electric Jet Engines (EJE) are a special type of propulsion system that offers numerous advantages. The engine is generally easier to use and maintain than many other forms of transportation, as it is free from many of the mechanical limitations that come along with traditional c......
Development and Application Introduction of Butterfly Valve
Butterfly Valve Development and Applications
A butterfly valve is a quarter-turn valve used to control the flow of a liquid or gas. It is designed with a disc-shaped closure element that rotates and creates an opening or closing in the flow line. The valve and disc are usually mounted opposed to ......
BH rapid carburizing and carbonitriding technology
。
BH Fast Carbon and Carbon-Nitrogen Co-Penetration Technology
Abstract: BH fast carbon and carbon-nitrogen co-penetration technology is the use of high-frequency current technology to form a high-temperature arc in a short time to quickly penetrate the workpiece. This technology not only increas......
Common carburizing (carbonitriding) steel
Carbonitriding
Carbonitriding is a kind of metal surface modification technology that is mainly used to improve toughness surface properties, wear resistance and fracture surface properties of steel.
Definition
Carbonitriding is a Hardening technique for ferrous metals that is similar to carbur......
hot corrosion
，标题为 Hot Corrosion
Hot Corrosion
Introduction
Hot corrosion is a form of corrosion that occurs when certain conditions are present. It is an aggressive form of accelerated corrosion caused by combining high temperatures (313-843 K) and water or moisture within the atmosphere, often containing......
Forging technology: the basic type of cross rolling
Introduction:
Cold rolling is the most common method of producing metals. It is used to reduce the thickness of metal and make it easier to form or shape. Cold rolling is a highly efficient and cost-effective way to produce metallurgical products with strong and accurate parts. One of the most po......
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