Blog

The pouring system includes a front box, a feed nozzle and an intermediate connecting pipe, which are mostly installed on a bottom plate. There is a fine adjustment mechanism on the bottom plate. When assembling, adjusting this mechanism can make the distance between the feed nozzle and the roll gap reach the expected deviation. The […]

On the surface or inside of the cast-rolled sheet, the defects of metal or metal inclusions that are different from the base metal in the macro or microstructure, and in the ultrasonic inspection will destroy the continuity of the base structure and are an irreparable defect. In severe cases, it will be scrapped. Defects of […]

Single tube blowing method: It is composed of high-pressure N2 (or Ar) gas cylinder, pressure reducing valve, melt-resistant blowing nozzle and desiccant. The single-tube blowing process is to first preheat the blowing nozzle to remove the moisture adsorbed on the surface, and then adjust the pressure relief valve according to the depth of the inserted […]

In order to overcome the shortcomings of the single-pipe blowing method, such as the small area of ​​action and the difficulty of controlling the bubble size, a rotary blow method with a porous blowing head was developed. The structure of the blowing head can be varied, but the purpose is only one, that is, to […]

The quality of the aluminum melt largely determines the quality of the final product. In particular, there are two or more electrolytic aluminum liquids (more hydrogen content, more inclusions) and one less (less active crystal nuclei). If the process is improper, it will cause the cast-rolled coil produced with liquid material ingredients to have more […]

Melt filtration is the most effective and reliable way to remove non-metallic inclusions in aluminum melt. There are many kinds of filtration methods, and the most effective and most effective ones are tubular filtration and foam ceramic plate filtration. The corundum tube filter has high filtration efficiency and can effectively remove small non-metallic inclusions in […]

Generally speaking, the purification of aluminum alloy melt in furnace melt purification treatment is quite limited. To further improve the purity of the aluminum alloy melt, it is more important to rely on the on-line purification treatment outside the furnace to more effectively remove harmful gases and non-metallic slag inclusions in the aluminum alloy melt. […]

Protruding bubbles appear on the surface of aluminum products, the ones that are complete are called bubbles, and the ones that have burst are called skin. They are mostly arranged in a linear manner in the extrusion direction, which can be judged by the naked eye. It mostly appears at the beginning and end of […]

During casting, the molten metal contains a large amount of gas and solidifies, forming round holes with smooth inner surfaces, that is, pores in the ingot. The main reasons are: the raw materials used are damp, and the stove and tools are not completely dried. The smelting temperature is high, the coverage is poor, the […]

For aluminum and aluminum alloys, degassing and slagging with halogen compound flux is an important method. When using aluminium drossing flux, a large number of dispersed and fine flux droplets are formed in the melt. According to the law of dissolution equilibrium, the atomic hydrogen in the melt is brought to the liquid surface due […]