| 摘要 |
<p>A crack-free seal is formed between adjacent, complementary, thermoplastic solid bodies 4, 5 by placing an electro-magnetically absorptive wafer 3 between the thermoplastic bodies, bringing the bodies into close proximity with the wafer therebetween, and irradiating the wafer and bodies with electro- magnetic radiation at a frequency that only the wafer substantially absorbs. The process is especially useful for sealing wax patterns and gating as part of the lost wax process for producing metal alloy castings. <IMAGE></p> |
