Why should the casting be infiltrated


Infiltration is widely used as a method for treating pores. In the field of micro-porous sealing technology, we refer to holes having a diameter of less than 0.254 mm as micro-holes, compared to the wall thickness of 5 mm castings. These holes are usually hard to find with the naked eye. In the automotive power system and pneumatic hydraulic system castings, the presence of micro-holes will lead to leaching of the sealed medium, increase the wear of the machining tools, and at the same time increase the production cost, making it difficult to ensure the quality of the product. It will lose its proper function during the use of the product.

Vacuum pressure infiltration equipment is an effective method to solve the above-mentioned problems. The permanent and reliable microporous sealing capability of the infiltrant and the effective solution to the leaching of castings have been widely trusted in the world. And can resist heat, oil and chemical attack. This process can be used on raw, machined parts. Does not cause dimensional changes or the casting is contaminated.

Infiltration range: Applicable to: Infiltration of oil leaks from zinc alloys, copper alloys, aluminum alloys, iron castings, steel castings, etc. Typical impregnations such as engine blocks, cylinder heads, intake manifolds, oil pumps, grease nipples, water pumps, valve covers, cast oil pans, carburetor housings, transmission housings, crankcases, compressors, ABS Controllers, Power Steering, Automotive Wheel Hubs, Fuel Pumps, Natural Gas Control Valves, Hydraulic Valves, Cooling Pumps, Sealed Aircraft Instruments, and Electronic Instrument Covers, Air Brake Parts, and Various Gas Instruments. These castings are permanently sealed by infiltrant injection into the micropores and their pressure bearing capacity reaches the fracture strength of the casting.

Impregnation principle: impregnation is also called impregnation and infiltration. Through the vacuum pressure infiltration equipment, the impregnation adhesive (impregnant) penetrates into the micropores of the workpiece and fills the gaps of the micropores, effectively preventing leakage and corrosion of the workpiece, thereby achieving the purpose of sealing and leaking.