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contemporary history of mechanical engineering
内容
Introduction
Mechanical engineering is the application of physics, mathematics, and engineering principles to the manufacture, design, and operation of machines, tools and mechanical systems. It is one of the oldest and most versatile disciplines in engineering. While its core principles have......
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Straight bevel gear planer technical parameters
Helical Gear Hobbing Machine Technical Parameters
Helical gear hobbing machines are widely used in the automotive, aerospace and mechanical engineering industries. They are used to cut helical gears and sprocket teeth, which are widely used in speed reduction, power transmission, and geared motor......
Summary of Control Valve Standards (2)
Valve Standards Summary（Part II）
Valves are a key component of modern industrial processes. Due to the complexity of many valves and their operating environments, industry standards have been developed to ensure safety and performance. There are a number of both international and national valve......
Models and technical parameters of horizontal milling and boring machines and CNC horizontal milling and boring machines
Conventional and CNC Horizontal Boring and Milling Machines
Horizontal boring and milling machines has been used for many years for precision boring and milling operations. With the development of technology and CNC, these machine have become increasingly popular. This article will discuss the f......
Statistics of Construction Machinery for Construction Enterprises
Introduction
Heavy machinery and constructions are a huge part of the construction industry. From large cranes that lift construction materials to the small power tools used in the construction process, the construction industry uses a wide range of machinery and equipment. In order to understand......
Technical Research on Root Cleaning of Blades Using 4-coordinate CNC Machine Tool (Part 1)
Research on Technology of Root Clearance of Blades by CNC 4-Axis Machine Tools (I)
In order to make the machine part’s surface smooth and wear resistance, it is necessary to make the blades clean. Generally, the machine tool is used to grind the root of the blade. However, this is a strong inte......
High Energy Beam Welding Technology
Abstract
High energy beam welding (EBW) is an advanced welding process which uses a high energy electron beam to make the metal in the weld zone form a molten pool to melt the material. The biggest advantage of EBW is the great precision weld. Since EBW is suitable for flat, vertical and angular ......
GB 10877-89 Oxygen cylinder valve
，文章内容可以随意，
Oxygen Cylinder Valves
Oxygen cylinder valves are an integral part of any oxygen supply. Without a reliable, secure cylinder valve, patients may not receive the oxygen they need. Cylinder valves are therefore used in a variety of settings, from medical centers and hospitals to......
GB 5773-86 Performance Test Method for Positive Displacement Refrigeration Compressors
，文章的主要内容是要介绍GB 5773-86容积式制冷压缩机的性能试验方法，要包含性能试验环境要求，测量设备，测量指标及试验步骤，请有相关知识的人帮助写。
Performance Test Method of Volume Refrigeration Compressor GB 5773-86
GB 5773-86 is a national standard which aims to define the specification and perfor......
GB 7934-87 Technical conditions for two-way cartridge hydraulic valves
GB/T 7934-87 Two-way plug-in type hydraulic valve Technical Condition Introduction To meet the needs of modern industrial production, there are many kinds of hydraulic valves with different working principles.GB/T 7934-87 two-way plug-in type hydraulic valve is a kind of valves with simple structur......
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