Infiltration equipment company: Infiltration technology is an effective method to solve the leakage of die castings

The development of infiltration technology has a certain history. It mainly uses equipment to infiltrate the hydraulic pressure into the workpiece and let the liquid fill the workpiece to achieve the purpose of sealing. The use of infiltration technology is mostly used for the casting of workpieces, and the infiltration technology is rapidly developed, which is popular because the infiltration technology is the most effective method to solve the leakage of die castings.

During the casting process, the die-casting parts are prone to internal looseness, shrinkage, porosity, and other defects. After the defective castings are machined, the surface dense layer parts are removed to expose the internal tissue defects. For automotive aluminum castings with sealing requirements, such as cylinder block, cylinder head, intake manifold, carburetor, brake valve body, etc., when the pressure sealing test is carried out, the presence of defective micropores will lead to the seepage of the sealing medium. Leakage causes a large amount of waste, and these defects are often found after being machined and subjected to pressure test, resulting in serious waste of working hours, raw materials and energy. In order to solve the problem of high scrap rate of die-casting parts, and to save the castings that may be scrapped due to the above defects, certain treatment measures must be taken in production. The most common technology currently used is infiltration treatment, that is, plugging. The so-called "impregnation" means that the infiltrant is infiltrated into the micropores of the casting under certain conditions. After solidification, the filler penetrating into the pores is integrated with the inner wall of the pores of the casting to block the micropores, so that the parts can satisfy the bearing. Process technology for conditions such as pressure, seepage prevention and leakage prevention.

Infiltration technology is an effective measure to solve the leakage of lost foam castings. It is a vacuum pressure method, so that the impregnation liquid is immersed in the loose parts of the casting, such as loose pores and pores, and is solidified to fill the micropores of the casting, thereby solving the leakage problem and achieving the purpose of sealing pressure, and the application of the infiltration technology at home and abroad. Continuously expanding, infiltration technology has been recognized and applied by military, automotive, ship and other major industrial sectors. Among them, the vacuum pressure infiltration process is currently recognized as the most efficient and reliable infiltration method. The sealing of the assembly, as well as the pre-treatment and pre-treatment steps of the workpiece plating, finishing, etc., have obvious technical and economic benefits for improving product qualification rate, saving energy and reducing cost.

Infiltration technology is an effective measure to solve the leakage of castings. It is mainly used for non-ferrous metals and powder metallurgy products (mainly aluminum alloys) to improve the pass rate of castings and reduce the production cost. At present, the rejection rate of die-casting parts in many factories in the country is relatively high, especially for non-ferrous metals up to 20%. The promotion of this technology can recover a large amount of waste loss and has obvious economic benefits. It is understood that after the adoption of this technology by many enterprises in the country, the practice has proved that it can save hundreds of thousands or millions of funds every year. Many domestic cast aluminum and light casting castings use the organic infiltration process and the main application of the infiltration technology. In the case of cast copper, cast aluminum, light alloy castings, powder metallurgy, etc., the proportion of workpieces that must be scrapped before re-casting is almost reduced to zero, and the economic loss is recovered by several million yuan per year. If it is promoted and applied nationwide, it will achieve significant economic and social benefits.