Salt core sintering method for cooling oil channel in aluminum piston

The invention discloses a salt core sintering method for a cooling oil channel in an aluminum piston. The salt core sintering method comprises the following steps that in the first stage, sintering temperature of the turned salt core is raised to 80 DEG C-200 DEG C from 20 DEG C-30 DEG C, and then t...

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Bibliographic Details
Main Authors ZHU MAOCHUN, ZHU YIPENG, YI LYULIN, LIU LIGUO, HUANG DEWEI
Format Patent
LanguageChinese
English
Published 14.12.2018
Subjects
CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:The invention discloses a salt core sintering method for a cooling oil channel in an aluminum piston. The salt core sintering method comprises the following steps that in the first stage, sintering temperature of the turned salt core is raised to 80 DEG C-200 DEG C from 20 DEG C-30 DEG C, and then the temperature is kept for 1 hour-3 hours; and in the second stage, the sintering temperature is raised to 600 DEG C-700 DEG C, then the temperature is kept for 1 hour to 3 hours, and then natural cooling to 20 DEG C to 30 DEG C is conducted. The salt core sintering method for the cooling oil channel in the aluminum piston has the beneficial effects that 1, compared with an existing salt core sintering process, an expansion rate of the salt core produced from the new sintering process is 0.8%-1.2%, and strength difference between the salt cores of the same furnace is not larger than 15%; 2, the strength of the salt core produced from the new process is improved by 10%-15%, variable quantityof shape and size is smal
Bibliography:Application Number: CN201811002496