Welcome to the renoho website!
Precision machined parts manufacturer Aluminum alloy precision parts, stainless steel precision parts, precision stamping parts
tel
Dongguan CNC processing plant introduces you to the definition of metal

The information comes from:Internet Posted on:2021-06-21

Dongguan CNC processing plant introduces you to the definition of metal
In the development of human society, the application of metals plays a key role. Of the approximately 100 basic elements that make up substances, approximately half are metals. The difference between metals and non-metals is not particularly obvious. The most basic definition focuses on the connection forms existing between element atoms and certain characteristics of the electrons associated with these atoms. However, in practical applications, the Dongguan CNC processing plant can define a set of metals with certain characteristics as a certain element, except for a few exceptions. The metal is solid at room temperature. They are good conductors of heat and electricity and do not transmit light. They tend to have a higher density. Many metals are ductile, that is, their shape can change under the action of external force without being destroyed. The force required to cause permanent deformation and ultimately the force required to break the metal is quite large, although the force required to break occurs is far from the expected force required to tear apart metal atoms.
From the point of view of the Dongguan CNC processing plant, crystallinity is the most important of all the characteristics. A crystal is a structure in which the atoms that make up it are positioned in a regular three-dimensional arrangement, as if on the corners of a three-dimensional chessboard. The distance between atoms changes regularly with the size of the atoms, and the distance between atoms is a characteristic of metals. The axis of the three-dimensional arrangement determines the orientation of the crystal in space. The metal used in engineering practice consists of a large number of crystals, which are called crystal grains. In most cases, the crystal grains are arranged freely in space. In the atomic range, the crystal grains are in close contact with each other. The junction area between the grains is called the absolute pure metal of the grain boundary has never been produced. Even if absolutely pure metals can be produced, engineers are not particularly interested in them because they are soft and fragile. Metals in practical applications often contain a certain amount of one or more foreign metal or non-metal elements. These foreign elements may be harmful or beneficial or they have no effect on a certain property. If they are harmful, these foreign elements are considered impurities. If they are beneficial, they are considered alloying elements. A certain amount of alloying elements are often deliberately added to engineering materials. The resulting material is called an alloy.
There is not much difference between metal and alloy. The term metal can include pure industrial metals and their alloys. It may be said that the more alloying elements are deliberately added, the greater the amount of alloying elements added, the more likely it is to be called alloys. In any case, if you want to make a metal or alloy exhibit stable and consistent characteristics in use, what chemical composition is added to it, and the amount of it should be within the control range. Therefore, when you want to understand the factors that determine the properties of metals and alloys, you should fully consider their chemical composition.
The most important thing is iron, on which steel and cast iron can be seen everywhere. (Alloy mainly composed of iron and carbon) Their weight accounts for 98% of the weight of all metals produced. In structural applications (that is, structures that can bear loads) are aluminum, copper, nickel, and titanium. In all metal production, aluminum accounts for 0.8%, copper accounts for 0.7%, and the rest accounts for 0.5%. The remaining metal is used for relatively special purposes. For example, nickel alloys are mainly used for wear resistance and high temperature resistance. Due to the comprehensive characteristics of high strength and low density of titanium alloys, titanium is widely used in the aviation industry. Nickel-titanium has high cost and high-quality usage characteristics. In fact, their high cost limits their application.
We cannot discuss these esoteric characteristics here. Before the alloy material is adopted and applied to engineering practice, Dongguan CNC processing plant needs to master its structural strength and its comprehensive properties. For example, it can be very strong and has good wear resistance; it can be processed by special processes such as stretching, machining, or welding; it can be recycled; its cost and practicality Is the primary
[ Previous: Guangdong machinery processing plant to share with you = surface finishing processing mechanism ]    [ Next: The development status of new mechanical processing technology in Guangdong mechanical processing plant ]    [ Return ]
Add WeChat
tel
Address:Henan Industrial Zone, Jinxia, Chang'an Town, Dongguan City
Dongguan renoho Precision Machinery Technology Co., Ltd. copyright 2021
Technical Support:Wangyi technology [Bmap Gmap] [Admin]