我厂对使用Zn821合金制造模具进行了试验与比较,取得较满意的效果。我们采用Zn821新模具合金制模,充分发挥它的强度,硬度以及低熔点的优良特性,又针对它脆性与凝固收缩较大的特点采用复合结构形式,即使用A_3钢板作固定框,框内镶成型Zn821模,这样不单节约合金,而且因合金层薄,总收缩量影响小,定位装置在A_3钢板模壳上,具有钢模的定位精确性与易熔合金模制造简易性。 I plant on the use of Zn821 alloy molds were tested and compared to obtain more satisfactory results. We use the new mold alloy mold Zn821, give full play to its strength, hardness and low melting point of the fine features, but also for its brittleness and solidification shrink larger features using composite structures, even with A_3 steel plate for the fixed frame, box set Forming Zn821 mold, so not only save the alloy, but also because of the thin alloy layer, the total contraction of a small impact, positioning device in the A_3 steel mold shell, with the positioning accuracy of steel molds and easy fusing die manufacturing simplicity.