1. Different development histories

1. Casting: Casting is the earliest metal thermal processing technology mastered by humans, with a history of about 6,000 years. China has entered the heyday of bronze castings between about 1700 BC and 1000 BC, and its craftsmanship has reached a very high level.

2. Die-casting: In 1838, in order to make molds for movable type printing, people invented die-casting equipment. The first patent related to die casting was issued in 1849. It was a small manual machine used to produce printing press type.

2. Different characteristics

1. Casting: It can produce parts with complex shapes, especially blanks with complex inner cavities; it has wide adaptability, and all metal materials commonly used in industry can be cast. A few grams to hundreds of tons; raw materials are widely sourced and cheap, such as scrap steel, scrap parts, chips, etc.

2. Die casting: Castings have excellent dimensional accuracy and can directly cast internal structures, such as wire sleeves, heating elements, and high-strength bearing surfaces. Some other advantages include its ability to reduce or avoid secondary machining, fast production speeds, casting tensile strengths up to 415 MPa, and the ability to cast highly fluid metals.

3. Different processes

1. Casting: Various raw materials used for modeling and core making in sand casting, such as raw casting sand, molding sand binder and other auxiliary materials, and The molding sand, core sand, paint, etc. prepared from them are collectively called modeling materials. The task of preparing modeling materials is to select appropriate raw sand, binders and auxiliary materials according to the requirements of the casting and the properties of the metal, and then mix them in a certain proportion. They are mixed into molding sand and core sand with certain properties.

2. Die-casting: The traditional die-casting process mainly consists of four steps, or is called high-pressure die-casting. These four steps include mold preparation, filling, injection and shakeout, and are the basis for various modified die casting processes. During the preparation process, lubricant needs to be sprayed into the mold cavity. In addition to helping to control the temperature of the mold, lubricant can also help in the demoulding of the casting.

Industry Trends

The development of the foundry industry. Casting is one of the basic processes of the modern machinery manufacturing industry, so the development of the foundry industry marks the production strength of a country. According to statistics in 2008, my country's annual output of castings is 33.5 million tons, making it the world's largest casting country. With the continuous development of my country's foundry industry, the domestic foundry industry will create "four-have" innovative enterprises, that is, innovative ideas, innovative plans, innovative institutions and systems, and innovative working methods. In terms of transformation and upgrading, it is necessary to create new enterprises with six major characteristics:

First, enterprises with innovative business models that expand front-end market research and development and back-end services and shrink manufacturing links.

Second, companies that shift from selling products to selling solutions and provide complete solutions.

Third, a digital enterprise marked by intelligence and integration.

Four. A speed enterprise that can double in three to five years.

Fifth, an enterprise with advanced technology, green manufacturing and continuous innovation.

Sixth, create high-end products and high-quality products, guide consumption, and become an enterprise with a winning brand. With such industrial innovation, I believe that my country's foundry industry will be more brilliant in the future, and we will wait and see the bright future.