Views: 1 Author: Site Editor Publish Time: 2019-11-25 Origin: Site
Metal fabrication is a production activity that humans often carry out and is closely related to our lives. I will tell you what metal fabrication is.
What is metal fabrication?
History of metal fabrication
Metal fabrication process
Metal fabrication, referred to as metalworking, is a process technology that processes metal materials into articles, parts, and components, including large parts such as bridges and ships, and even fine components of engines, jewelry, and watches. Metal fabrication is widely used in different fields such as science, industry, art, and crafts.
Archaeological excavations prove that China has been made into practical pottery more than 8,000 years ago. It has been smelted out of brass more than 6,000 years ago. It has been a simple bronze tool more than 4,000 years ago. It was more than 3,000 years ago. Use coltan to make weapons. Our ancestors had smelted pig iron in the Spring and Autumn Period more than 2,500 years ago, more than 1,800 years earlier than Europe. In the 18th century, the development of the steel industry became an important content and material basis of the industrial revolution. In the middle of the 19th century, the emergence of modern open hearth furnaces and converter nickel tube steelmaking technology made mankind truly enter the steel age. At the same time, copper, lead and zinc have also been widely used, and metals such as aluminum, magnesium and titanium have been introduced and applied.
To date, metallic materials have dominated the materials industry. Metal materials can be said to be the full name witness of the development of human society. The reason why it is said is that it is inseparable from his pivotal role in the various transitional periods of human society. As a material that humans first discovered and began to use, metal can be said to influence the historical development of human beings from all aspects. From the initial destruction of metal into hunting weapons to the human life today, metal is completely inseparable. It can be seen that metal has already been integrated into the entire human society.
Metal fabrication refers to the production activities of humans that process metal-based materials composed mainly of metal elements or metal elements. Metal fabrication methods and processes include:
1. Casting: The metal is heated and melted, and then poured into the model, suitable for processing complex parts. Including sand casting, investment casting / lost wax casting, die casting, spin casting, directional solidification.
2. Plastic forming processing
Forging: The use of beating and squeezing to metal in cold or high temperature operation is one of the simplest and oldest metal fabrication processes.
Tie-made: The high-temperature metal billet passes through several continuous cylindrical rollers that pull the metal into the mold to obtain a preset shape.
Drawn steel wire: A process in which a metal wire is drawn into a filament shape by a series of wire drawing dies that are gradually reduced in size.
Extrusion: A low-cost process for continuous processing of solid or hollow metal shapes with the same cross-sectional shape, both high temperature and cold working.
Impact Extrusion: For the fabrication of small to medium size metal fabrication without taper requirements. It is fast in production and can process all kinds of wall thickness parts. The cost of metal fabrication is low.
3. Solid molding processing
Solid molding processing means that the raw materials used are some metal strips, sheets and other solid forms that can be shaped under normal temperature conditions. It is labor-intensive production. The cost of metal fabrication can be relatively low.
Solid molding processing can be divided into several types: spinning, bending, continuous forming, stamping, punching, punching, shearing, chip forming, chipless molding, and drawing.
The principle of production: two sets of differential wheels rotating in the same direction, the upper group is a fast rotating grinding roller, the lower group is a slow rotating rubber roller, and the aluminum or aluminum alloy plate passes through the two sets of rollers and is brushed out. Delicate intermittent straight lines.
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