Knowledge of the casting

Knowledge of the casting shared by large steel castings manufacturer.

The Performance of the casting:

Theory of casting forming metal liquid forming is often called casting, casting forming technology has a long history. More than 5,000 years ago, our ancestors were able to cast red copper and bronze products. Casting is the most widely used metal liquid forming process. It is a method of pouring liquid metal into the mold cavity, and after it is cooled and solidified, the blank or part of a certain shape can be obtained.

In the machine equipment, the liquid part takes up a large proportion, in machine tools, internal combustion engines, mining machinery, heavy machinery, liquid part accounts for 70%~90% of the total weight; In the automobile, the tractor occupies 50%~70%; In agricultural machinery accounts for 40%~70%. The liquid forming process is so widely used because it has the following advantages:

(1) can produce a cavity, very complex shape of the blank. Such as all kinds of box, machine bed, cylinder body, cylinder head, etc.

(2) great process flexibility and wide adaptability. Liquid moulds are almost unlimited in size, ranging in weight from a few grams to several hundred tons, and their wall thickness can range from 0.5mm to about 1m. Any metal material that can be dissolved into liquid form can be used in liquid forming. For cast iron with poor plasticity, liquid forming is the only way to produce its blank or part.

(3) low cost of liquid parts. Liquid forming can directly use waste parts and chips, equipment costs are low. At the same time, liquid parts processing margin is small, saving metal.

However, the process of liquid metal forming is too many and it is difficult to control accurately, so the casting quality is not stable enough. Compared with forgings of the same material, the liquid forming structure is loose and the grain size is large

It is easy to produce defects such as shrinkage cavity, porosity and porosity. Its mechanical properties are low. In addition, labor intensity, poor conditions. Excellent mechanical and physical properties, it can have a variety of different strength, hardness, toughness with comprehensive properties, also can have a kind of or a variety of special properties, such as wear resistance, high temperature and low temperature, corrosion resistance.

The weight and size range of castings are very wide, the weight is only a few grams, the heaviest can reach 400 tons, the wall thickness is only 0.5 millimeters, the thickness can be more than 1 meter, the length can be from a few millimeters to more than 10 meters, can meet the requirements of different industrial sectors.

The Use of the casting:

Castings are widely used, and have been used in hardware and the whole mechanical and electronic industry, and its use is becoming an expanding trend. Specific use, construction, hardware, equipment, construction machinery and other large machinery, machine tools, ships, aerospace, automobiles, locomotives, electronics, computers, electrical appliances, lighting and other industries, many are ordinary people all day long contact, but do not understand the metal objects.

That's all for the sharing, thanks for your reading, and we also supply Stainless steel casting parts for sale, if you have any demand for our products, just feel free to contact us.