Rapid solidification techniques i.e. cooling rate than under conventional process conditions (10-4 - 10K / S) faster cooling conditions - at (103 109 K / S), so that the liquid alloy into a solid state process method. It makes alloys have excellent organizational and performance, such as very fine grain (usually even nanoscale grains), an alloy element segregation defects and high dispersion of ultrafine precipitated phase, high-strength materials, high toughness. Rapid solidification of liquid metal can disengage conventional crystallization (nucleation and growth), directly form a solid amorphous structure of the material, i.e., a so-called metallic glass. Such amorphous alloy remote disordered structure, with special electrical properties, magnetic properties, electrochemical properties and mechanical properties of bollards production, it has been widely used. Such as a control transformer core materials, computer peripheral equipment parts in the head and the material, brazing materials. Rapid solidification is increasingly received much attention. The semi-solid casting semi-solid metal casting forming technology after 20 years of research and development, has entered the industrial application stage. The principle is carried out in the liquid metal in the solidification process vigorous stirring (can use mechanical, electromagnetic or otherwise) 50kn bollard, so that ordinary cast dendrite network skeleton formed readily be broken to form a particulate dispersion morphology to prepare a semi-solid metal was cast iron bollard, it has a certain fluidity, and then using conventional molding techniques such as casting, extrusion, forging and other molded or cast billet production. Semi-solid metal casting forming overcome the shrinkage of traditional Casting is easy to produce, shrinkage, porosity and size bias and other shortcomings, with a low forming temperature, extend die life, energy conservation, bollards, improve production conditions and the environment, improve the quality of castings (reduce porosity and solidification shrinkage), reduce the number of allowances and other advantages. Semi-solid metal forming process will become the 21st century a very promising near-net-shape forming one of the technology. Chen Hua Machinery (FIG), 50kn bollard, bollard provided by the China Machinery Equipment Co., Ltd. Qingdao Chen. Qingdao Chen Hua Machinery Co., Ltd. (www.qdchenhua.com) is specialized in the "press, harbor bollards, adjustable multi-axis tapping drilling machine, CNC multi-axis drilling, milling goal" of the enterprise, companies adhering to the "integrity management , the intentions of service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Yuan Xi Chuan.