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ancient history of machinery
Ancient History of Machinery
The very first machines were created as replacements for human skills. For example, back in ancient Egypt, 4000 BC, farmers and merchants used shadufs, a manual machine created to lift water from a river and put it into a crop field. This allowed them to control the a......
1048 
Sophia
Ground Vehicle Mechanics
The Mechanics of Ground Vehicles
In most cases, ground vehicles are man-made machines that use engines to generate proportional forces. While engines obviously provide the primary source of power for vehicles, other components must cooperate in order to effectively make use of the available energ......
Accuracy of precision bearings after installation
翻译
精密轴承安装后的精度
The precision of a precision bearing installation means the accuracy level of the bearing, i.e. whether it meets the technical requirements and can be used as an alternative after the bearing assembly is finished. Generally speaking, the precision of a bearing installatio......
Annular heating furnace steel structure installation
This paper mainly studies the installation of the steel structure of the circular furnace. Through the analysis of the structure, the design and installation are necessary, thus guaranteeing the accuracy and safety of the installation.
1. Introduction
Although in the engineering plant there are m......
Defects often caused by improper cooling process after forging
Defects caused by Improper Post-Forging Cooling Process
Forging is the process of forming metal parts into desired shapes, forgings can be found in many industries, from automotive and aerospace to consumer goods. In the forging process, the metals are heated to their plastic deformation temperat......
Modulus calculation for simple geometries during pouring
Modulus of Rigidity of Geometric Shapes
The modulus of rigidity or shear modulus, G, is defined as the ratio of shearing stress to the angular distortion of a material. It is a measure of the rigidity of a material and is used in various engineering contexts to calculate bending, airflow, and othe......
Influence of Die Steel and Forging Quality on Die Casting Die Life
The Impact of Mould Steel and Forging Quality on Die Casting Mould Lifespan
1 Introduction
Die casting moulds are complex and highly effective tools designed to produce high quality parts from a variety of materials, including metals and plastics. They create parts with highly precise shapes and......
Rolling mill host column
Steel Rolling Machine
As the human race progresses in its industrial progress, the need for more efficient materials increases. Steel is one of the leading building materials of modern society, and the steel rolling machine is an essential tool for producing it. A steel rolling machine is a machi......
Common Materials for Cold Formed Springs
Cold forming springs are widely used as a type of spring, such as torsion springs, compression springs, extension springs and other large-scale components. Cold forming springs are widely used in automobiles, household appliances, office systems, IT peripherals, medical equipment and other fields.......
Heat Treatment of Die Casting Die Parts: Tempering and Nitriding Treatment
Heat Treatment of Die Casting Molds
Die casting molds are an important part of the manufacturing process in completing a variety of different products. Heat-treating these molds is a critical step in ensuring their proper functioning and helpful to the process of creating crafts and items. Die ca......
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