Aluminizing and inlay casting technology for Al-based material

Abstract

The invention discloses an aluminizing and inlay casting technology for an Al-based material. The aluminizing and inlay casting technology comprises selection of an aluminizing material and surface active treatment on the Al-based material, and further comprises aluminizing and inlay casting, wherein the selection step means selecting the aluminizing material according to the Al-based material; the surface active treatment step means putting the Al-based material in an alkaline solution for soaking, taking out the soaked Al-based material, and carrying out cleaning and drying; and aluminizing and inlay casting are carried out after the selection step and the surface active treatment step, and particularly comprise the steps of melting the selected aluminizing material, carrying out heat preservation, heating the Al-based material subjected to surface active treatment, then putting the heated Al-based material into the molten aluminizing material, shaking to ensure that the heated Al-based material vibrates up and down, taking out the vibrated Al-based material, putting the vibrated Al-based material in a mold, casting the molten aluminizing material to obtain a cast, and allowing the cast to solidify, so that a metallurgical bonding surface is formed between the Al-based material and the aluminizing material. The aluminizing and inlay casting technology has the advantages that the operation is simple and convenient; the cost is low; the popularization and the use are easy; and the metallurgical bonding surface is formed between the Al-based material and the aluminizing material.

Description

technical field [0001] The invention relates to the field of non-ferrous metal casting, in particular to an aluminizing and embedded casting process of an aluminum-based material, which is mainly suitable for insert-casting the aluminum-based material in other aluminum alloy castings and forming a metallurgical bonding surface. Background technique [0002] For a long time, aluminum alloy has been the preferred material for manufacturing diesel engine pistons, but with the continuous increase of the explosion pressure of heavy-duty diesel engines, even if the pistons use Mahle174+ or S2N+ with the best performance among aluminum alloy materials, they cannot meet the harsh working conditions Require. Aluminum pistons are prone to throat cracking when the explosion pressure is above 18MPa, which leads to the gradual use of all-steel pistons on diesel engines with explosion pressure above 20MPa. However, the processing technology of the all-steel piston is complex, the manufac...

AI Technical Summary

Problems solved by technology

Although this invention improves the bonding strength of the interface between the insert ring and the piston base body through the aluminizing process, it still has the following defects: the melting point of the cast iron insert ring in this invention is much higher than the temperature condition of thermal aluminization, and the cast iron insert ring When hot aluminizing, the cast iron insert will not be melted, but for aluminum-based materials, the aluminizing process will cause the aluminum-based material to melt, so that there is no metallurgical bond between the aluminum-based material and the aluminized material

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