Composite material used for casting aluminum alloy box body oil duct and method thereof

Abstract

The invention belongs to the field of casting technologies, and particularly relates to a composite material used for casting an aluminum alloy box body oil duct and a method of the composite material used for casting the aluminum alloy box body oil duct. In order to solve the deep hole casting technical problem which is difficult to solve through an original casting technique, avoid the phenomenon that drilling is performed after hole-forming through an inlaying-cast steel pipe, and thus the oil duct is not homocentric and the aluminum base face is scratched, and solve the problem that a box body oil duct made of a common sand core can not meet the requirement for leakproofness, the composite material comprises metal pills, iron powder, roughing sand and a self-hardening resin sand binding agent, the oil duct core is made from the composite material to take place of an oil duct hole made of a steel pipe, interlayer defects can not be generated between the steel pipe and an aluminum substrate, and the potential hazard that steel scrapes enter the oil duct is avoided. According to the oil duct core made from the composite material, a compact chilling layer can be formed around the oil duct and meet the requirement for the leakproofness of the oil duct and is easy to scatter and low in gas forming, the surface of the oil duct is good in smoothness, and the oil duct can meet use requirements even if the oil duct is not subjected to machining.

Description

Technical field [0001] The invention belongs to the technical field of casting, and specifically relates to a composite material for casting an aluminum alloy box oil passage and a method thereof. Background technique [0002] At present, in some high-power diesel engine cases, there is a high-pressure oil passage for engine main shaft lubrication, piston cooling and lubrication. The oil passage runs through the entire length of the engine case, with a diameter of φ25~φ40mm, and the oil passage can withstand pressure above 1MPa. [0003] There are three ways to design the main oil passage of the active power box: [0004] Such as figure 1 As shown, the first method is to insert the steel pipe 2 that meets the oil channel specifications into the aluminum alloy box 1 to form the main oil channel. Most of the active power uses this method. This structure method is due to the strength and rigidity of the steel pipe. Very high, so the formed oil passage strength and sealing are very good...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a new type of core material for forming oil channels and oil channel forming technology, which solves the technical problem of deep hole casting that is difficult to solve by the original casting process; breaks through the current deep hole forming that relies on steel pipe embedded At the same time, it also avoids the phenomenon that the oil channel is not concentric and scratches the aluminum base surface caused by the use of embedded casting steel pipes to form holes and then drills holes; it also overcomes the inability of the box oil channel produced by ordinary sand core The problem of tightness requirements

Images