Auxiliary technique capable of increasing graphite mould titanium alloy casting quality

The invention relates to an auxiliary process for improving quality of a graphite type titanium alloy casting, which comprises the following steps: before pouring, using Y2O3, adhesive and deionized water to prepare surface slurry for accurately casting titanium according to a ratio of 85:10:5, usin...

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Bibliographic Details
Main Author NING ERBIN
Format Patent
LanguageChinese
English
Published 11.08.2010
Subjects
CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:The invention relates to an auxiliary process for improving quality of a graphite type titanium alloy casting, which comprises the following steps: before pouring, using Y2O3, adhesive and deionized water to prepare surface slurry for accurately casting titanium according to a ratio of 85:10:5, using a thin brush to evenly coat the surface slurry on the surface of a graphite type core for formingthe casting during pouring till fully covering, roasting the graphite type core in vacuum at a temperature of between 900 and 1,000 DEG C after the graphite type core is placed for 1 hour, preservingheat for 2 to 4 hours at a vacuum degree of less than or equal to 10Pa, cooling the graphite type core to be below 300 DEG C along with cooling of a furnace, discharging the graphite type core and then preserving heat at a temperature of between 100 and 200 DEG C in a baking oven, and taking out the graphite type core for standby during pouring. The auxiliary process can use the special surface slurry to fill pores on the
Bibliography:Application Number: CN20071300042