洛阳宝珠砂（电熔陶粒）粒型：球型，角形系数=1.1；耐火度=1830℃，粒度6目－320目，它耐高温，易溃散，热膨胀量小，不破碎，再生性能好，具有良好的铸造性能。广泛运用于各种铸造方式，砂型铸造，特种铸造（熔模、实型、消失模等）；也用于喷丸（铝、铜铸件）、低膨胀耐高温腹膜砂、消失模涂料的生产，适合使用各种铸造粘结剂。

   宝珠砂价格只有锆英砂1/3，铬铁矿砂1/2；产品比对列表：

Baozhu sand is new casting sand developed by our engineers and technicians based on more than ten years rescarch and experiment. The achievement is appraised by foundry experts as a revolution in casting sand.

Baozhu sand has good heat-resistance, low heat expansion, desirable collapsibility and good reusability; it doesn^,t break during process and has good foundry characters, Now, It is used in all types of casting method like sand casting, investment casting. It ia also applicable to sand blasting, resin sand manufacturing, and suitable for all binders.

Because of its pptimum combibination of cost and foundry characters, with it^,s rapid growing in recent years, Baozhu sand is widely used in sll linds of ferrous snd no-ferrous metal casting as a best substitute of chromite sand.

As the inventor of Baozhu sand, we are vety proud that it has been exported to Japan,France, South Kouth and other countries, where it^,s called as “Green Bead”.

Physical property:

1.       Grain shape: Round

2.       Colour:Black Brown

3.       Grain Size: 20/30, 30/40, 40/70, 50/100, 70/140, 100/200;

4.       Density; 1.95-2.05(g/cm≥)

5.       Refractory; ≥1790℃

6.       Heat Conductivity: (1200℃)5.27W/M。K

7.       Linear Expansion: (20-1000℃)6X10^-6/℃

Requirements for Binder: Less than 30-50 resin usage (comparing with other angular sand), Sodium Silicate≤4％ （Sodium Silicate+Carbon Dioxide）

       宝珠砂是我公司科研人员经过十多年开发研制生产的新型铸造用砂。被国内外铸造专家誉为铸造业的一次革命。 它耐高温、易溃散，热膨胀量小，不破碎，再生性能好，具有良好的铸造性能。使用于各种铸造方式：砂型铸造，特种铸造（熔模、实型，消失模等）；也用于喷丸，低膨胀耐高温覆膜砂的生产，适合使用各种铸造结合剂，已被国内外众多铸钢铸铁以及有色金属铸造生产的厂家使用。已大量出口日本、法国、南非等国家及地区，被国外同行命名为GREEN BEADS（环保型铸造材料）。

公司名称：洛阳宝珠砂铸材有限公司

公司地址：河南省洛阳市涧西区西马沟村北

邮政编号：471000

联系电话：0379-62111875

电子邮箱：lybzs369@yahoo.com.cn

联 系 人：周建平 先生 ( 经理 )