Novel Powder Metallurgy Compacts with Internal Structures

此前开发了一种新的制造技术，并申请了实用新型专利，该技术能够在两个步骤中生产完全封闭在金属中的中空部件。该技术利用粉末冶金压制和烧结技术将金属粉末致密化为完全封装内部结构的固体。这些内部结构通常由含有石蜡核的金属壳组成。首先，金属粉末被压制（“压实”）在含有软蜡填充芯的固体金属壳周围，以形成含有内部结构的金属压块或部件。随后在特定条件下加热（“烧结”）压坯允许石蜡从压坯中熔化出来，从而产生中空金属部件。

A novel manufacturing technology was previously developed, with a utility patent applied for, which is capable of producing a hollow component in only two steps that is completely enclosed in metal. The technology leverages the powder metallurgy press-and-sinter technique to densify metal powder into a solid body completely encapsulating an internal structure. These internal structures most often are composed of a metallic shell containing a paraffin wax core. Firstly, metal powder is pressed ("compacted") around a solid metal shell containing a soft wax-filled core to form a metal compact or part containing an internal structure. Subsequent heating ("sintering") of the compact at particular conditions allows for the paraffin to melt out of the compact, thus producing a hollow metal part.