Method for casting large-scale K403 high-temperature alloy die for isothermal forging

The invention belongs to a casting technology and relates to a method for casting a large-scale die for isothermal forging by using K403 high-temperature alloy. The method for casting the large-scale K403 high-temperature alloy die for isothermal forging comprises the following steps of: designing a...

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Bibliographic Details
Main Authors YAO ZEKUN, GUO YINGGUANG, GAO YINGMIN, GUO HONGZHEN
Format Patent
LanguageChinese
English
Published 04.07.2012
Subjects
ALLOYS
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
FOUNDRY MOULDING
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:The invention belongs to a casting technology and relates to a method for casting a large-scale die for isothermal forging by using K403 high-temperature alloy. The method for casting the large-scale K403 high-temperature alloy die for isothermal forging comprises the following steps of: designing a casting drawing according to a die requirement, and determining a machining allowance, a casting comprehensive shrinkage rate, a gating system and the position and the size of a dead head; manufacturing a sand mold and drying, preparing a raw material according to alloy chemical components, and smelting and pouring; pouring the casting and keeping in a vacuum state for at least 20 minutes, and discharging and cooling; keeping cooling after discharging and opening a box after finishing solidification; and reducing the temperature of the casting of which the casting head is cleaned step by step, and discharging. By the method, the thermal stress is reduced effectively, cracks and breakage can be prevented, the quali
Bibliography:Application Number: CN20101576014