在制备出的纯uc中加入适量添加剂，经过球磨制粉，湿法压制成型及高温除气、烧结等工艺过程制备出硬质合金样品。
Many additives were added into the UC-matrix, and the powder was prepared by the hall mill, wet pressing to form, sintering process and so on.
滤砂器是根据不同技术标准筛选不同粒度的石英砂、油井水泥、添加剂和水按配比加工压制的。
The center pipe is machined from 64mm tubing, and the sand filter is made from silica sand, cement, additive.
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