Method for debindering of powder molded body
AssigneeNGK Insulators, Ltd.
InventorsShinji Sakaguchi, Shigeki Kato, Takayuki Kawae
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Abstract
A method for debindering of powder molded body, including dipping, in an extracting solution an aqueous surfactant solution, a ceramic powder or metal powder molded body containing a binder with at least two kinds of binder components, to selectively extract and remove at least one kind of binder component from the molded body, and then removing the binder components remaining in the molded body after extraction. This debindering method permits rapid debindering while preventing the generation of defects such as cracks and the like, is highly safe to human health and environment, and requires a low facility cost.
Claims11
A method for debindering a powder molded body, the method comprising:
- dipping, in an extracting solution comprising an aqueous surfactant solution, a ceramic powder or metal powder molded body containing a binder comprising at least two kinds of binder components, selectively to extract and remove at least 40% by volume of at least one kind of binder component from the molded body before linear expansion of the molded body reaches 50% relative to linear expansion of the molded body when no extraction and removal takes place, and
- then removing the binder components remaining in the molded body after extraction.
A method for debindering a powder molded body according to claim , wherein a temperature of the extracting solution containing the molded body is increased at an elevation rate that does not exceed 20° C./hr.
Dependencies are inferred from the claim text.