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Semi -solid formation technology

In the field of metal processing, traditional casting and forging methods have been used for hundreds of years. However, with the continuous progress of industrial technology, a new metal forming technology -semi -solid forming technology, with its unique advantages, provides a revolutionary solution for the manufacturing of complex shape parts. This article will deeply explore the principles of this technology, process route and its application in modern industry.

Basic principles of semi -solid metal forming: The core of the semi -solid formation technology is the external interference in the process of metal solidification. By applying strong stirring and fast -cooling, it can effectively inhibit the formation and grown up of the primary phase of the branches, or promote a large number of nuclei inside the melt. Under certain temperature and time conditions, the metal transforms into a liquid metal uniformly suspended solid liquid mixture of non -branch crystals. This slurry can produce plastic deformation through a specific processing method, and after solidification, it becomes a rough with a certain shape and size.

The advantages of semi -solid metal forming are mainly:

(1) viscosity control: The viscosity of semi -solid metal is higher than that of liquid metal, which reduces the mold of the mold with the gas, the oxidation is reduced, the processingability is improved, the mold adhesion is reduced, the surface smoothness is improved, and the degree of automation is improved.
(2) Low liquidity stress: The flow stress of semi -solid slurry is lower than that of solid metals, which increases the speed of forming, complicated pieces are possible, the processing cycle is shortened, the material utilization rate is improved, and the energy saving material effect is significant.
(3) Optimization of micro -tissue: The internal tissue of the semi -solid forming part is dense, the defect is small, the grains are small, and the mechanical properties are high, which can reach the performance level of forging.
(4) Prolonged mold life: Due to the low forming temperature of the semi -solid slurry, the heat impact on the mold is small, thereby extending the service life of the mold.
(5) A wide range of applications: Alloys with almost all solid -liquid regions can be processed through semi -solid -state, suitable for various processing processes, such as casting, rolling, squeezing and forging.

The semi -solid formation process route is mainly divided into two: flow, forming and touch.

Streaming and forming: This is a process from liquid to semi -solid temperature. During the cooling process, strong stirring and other methods are usually performed to promote metal non -branch crystallization, forming uniform solid solid mixing pulp, and then directly forming. This method is suitable for manufacturing with complex shapes or thin walls.

Tentile formation: In contrast to flowing, this is a process from solid -warming to semi -solid temperature. After obtaining a non -branch crystal tissue by mixing, first cool down and save to form a large blank material. Before the forming, it is quantitatively divided according to the product weight and melted to the semi -solid state for forming. This method is suitable for parts manufacturing with high mechanical performance.

Technical advantages and application prospects
The advantage of semi -solid forming technology is that it can accurately control the phase change process of metal and obtain the best semi -solid pulp through different pulp processes. This technology has a broad application prospect, especially in the fields of automotive lightweight, aerospace high -performance component manufacturing, and 5G communication equipment. Half -solid forming technology can provide high -performance and lightweight solutions.

The development of semi -solid forming technology not only promotes the progress of metal processing technology, but also brings new opportunities to modern manufacturing. Zhengheng Power has jointly carried out a joint research with well -known universities. With the continuous maturity and innovation of technology, we believe that the industrialization application of semi -solid forming technology will become wider and wider. development of!