| 摘要 |
A heat insulation plunger sleeve for a die casting machine exhibiting excellent heat insulation/thermal insulation performance and excellent stability as a structural member and capable of sustaining stabilized pressure casting operation by suppressing temperature drop of non-ferrous metal molten metal as much as possible. The heat insulation plunger sleeve for a die casting machine comprises a first metal layer of highly heat resistant metal on the inner circumferential side, a second metal layer on the outer circumferential side, and a ceramics layer formed between the first and second metal layers, wherein the ceramics layer is formed of ceramics powder compacted to have a relative density of 50%-90% and/or ceramics fibers.
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