耐火骨料

文摘：研究了石英粉耐火骨料的粒度分布对消失模铸造涂料的透气性和粘度的影响。

Abstract : Influence of granularity distribution of quartz refractory aggregate on permeability and viscosity of EPC coating was investigated .

这种芯料采用水溶性磷酸盐为粘结剂、氧化镁为固化剂、高纯二氧化硅为耐火骨料。

The core materials consist of soluble phosphate binder , magnesium oxide hardener and high-purity silicon oxide as refractory aggregate materials .

以超细锆英粉作为耐火骨料，配制EPC用锆英粉涂料。

Using the minute Zircon powder as heat-resistant material , the Coating for minute Zircon powder in EPC is confected .

耐火骨料粒度分布对消失模涂料性能的影响

Influence of Granularity Distribution of Refractory Aggregate on the Properties of EPC Coating

这种涂料的主要耐火骨料是75~200目铬铁矿砂、镁砂、刚玉砂等。

The main refractory of the coating consists of the 75 ~ 200 mesh chromite sand , magnesite and corundum sand .

为了得到性能优良的涂料，在配制涂料时应使用粒度集中的耐火骨料。

It is prior to use refractory aggregate with concentrative distribution to obtain coating with excellent properties during the mixture of coating .

这种烧结剂是一种改性酚醛树脂，它和作为耐火骨料的原砂混合制成覆膜砂作为激光烧结材料更加适用于激光快速成型过程。

Precoated sand made of mixing this kind of resin and sand can serve as laser sintering material which suits laser rapid molding process much more .

结果表明：耐火骨料、悬浮剂、粘结剂加入的先后顺序不同，对悬浮性、附着量、强度和粘度的影响较大，对透气性的影响不大。

The results showed that : Different addition sequence has greater effect on the suspension , attached to the volume , strength and viscosity , has little effect on the permeability .

铸造涂料耐火骨料颗粒级配及其测试本文概述了涂料耐火骨料颗粒级配对涂料性能的影响，总结了目前颗粒级配方法的特点。

In this paper , a overview of the refractory grain distribution effects on the property of casting coating was given , the characteristic of the method for testing grain distribution was summarized .

初步试验了一种以高铬刚玉砂粉为耐火骨料，钠基膨润土作悬浮剂，糖浆作粘结剂、有机纤维作透气材料的用于铸钢件的水基消失模涂料。

A water base EPC coating for steel casting is tested , which is made up of the refractory of high chrome corundum , the suspending agent of Na bentonite , the binder of syrup and the permeable material of organic fibre .

结果表明，镁铬耐火材料的骨料不同，Al2O3对其烧结性能和致密化的影响也不一样。

The results show that the effects of alumina on the sintering properties and densification of different magnesia-chrome refractories are also different .