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    寶珠砂
    發布時間:2010/11/9 9:29:00
    產品特性及主要指標標準值
    Product Characteristic & Standard of Major Technology Parameter
    鑄寶砂(NFS CERAMSITE = Nice Foundry Sand)是對熔融狀態下的高氧化鋁質的原料(鋁礬土)進行噴霧處理,使之再結晶而得到的高耐熱性,低熱膨脹,球狀人工鑄造砂。鑄寶砂(NFS)系列鑄造陶粒砂產品在性價比上優于鉻鐵礦砂、鋯英砂,為鑄造行 業提高鑄件質量,降低成本,減少污染開辟了有效途徑。是目前世界上較為理想的新型鑄造用砂,具有廣闊的發展前景。
    Nice Foundry Sand (NFS CERAMSITE) is a kind of a new artificial Foundry sand that is ball-shaped, high heat-resistant, low heat dilating rate. NFS has advantage of cost and performance than Chromite sand and zircon sand that provide the effective ways to increase improve the quality of the foundry, cost-down and less damage to the environment. It is the best selection to put the NFS into use in the field foundry and has good vision of development.

    一.鑄寶砂鑄造陶粒主要技術指標 
    1、主要化學成分:
    Al2O3 ≥75%   Fe2O3 ≤5%   Tio2 ≤5%   SiO2 5%-20%  其它:微量
         2、粒形:球形
         3、角形系數:≤1.1 極似球狀
         4、密度(堆集密度):1.95-2.05(g/cm3)
         5、耐火度:≥1790℃
         6、熱膨脹率:0.13%(1000℃加熱10分鐘)
    Ⅰ. NFS Major chemical element and physical parameter 
    1. Main Chemical element: 
    Al2O3≥75% , Fe2O3≤5%, Tio2≤5%, SiO2 5%-20%, Else: Tittle.
       2. Shape: Ball Shape
       3. Angle Factor: ≤ 1.1, very close to ball
       4. Bulk Density: 1.95-2.05 (g/cm3)
       5. Refractoriness: ≥1790℃
       6.Thermal expansion : 0.13%(10 minutes at 1000℃)
       

    二.鑄寶砂鑄造陶粒具有如下優點
    1. 球狀粒形
    粒形接近真圓,表面光滑,無凹凸脈紋。其流動性及填充性好,能得到良好的成型性和鑄模強度。潰散性好,易于清砂作業。粘結劑使用量較其他同類型砂有較大的節省。
    2. 熱膨脹率低
    熱膨脹率之低于鉻礦砂等特殊砂相同,所以,生產鑄件的尺寸精度高,破裂及表面缺陷少,鑄件成品率高。
    3. 耐破碎性好
    鑄寶砂的致密性好,強度高,即使重復再生使用也很少破碎,減少鑄造生產過程中的粉塵對生產環境的污染,再生性好,減少產業廢物排放,利于環境保護。
    4. 耐火性好
    主要成分是氧化鋁,所以耐火性能很好。耐火度≥1790℃能滿足鑄造各種金屬及合金。

    Ⅱ. NFS CERAMSITE Features namely advantages as follows
    1. Round solid Ball shape: The shape is mostly close to ball with smooth surface and lower specific surface area. And NFS has very good air permeability good liquidity and easy to fill that can make the surface perfect when founded. Further more; NFS can flow very easily and easy to clean. The less felting liquid can be used than other sand when using NFS.

    2. Lower thermal expansion rate and thermal conductivity: It is just this characteristic that makes the foundry more precisely, less cracking and high output. Improve foundry quality.

    3. Lower cleavage breakage rate: NFS has high density and has very low cleavage breakage rate. Easily reclaimed that makes it more protect environment for the less sand powder occurred.

    4. High refractoriness and service temperature: Major element is Al2O3 that has very good refractoriness. The service temperature is beyond 1790℃ that can make it possible to found most of the metal fares.

    三.鑄寶砂各規格的粒度分布
    Ⅲ. NFS Major Particle sizes distribution: 
    The distribution specification can be designed according customer’s specific requirement.

    Spec 10 14 20 30 40 50 70 100 140 200 270 Pan AFS Range 
    1700 1180 850 600 425 300 212 150 106 75 53 Pan
    200#   ≤5 10-30 30-50 15-35 ≤5             15-25 
    300#     ≤10 25-45 35-55 5-15 ≤5 ≤2         25-29
    400# ≤10 25-45 20-40 15-25 ≤7 ≤5 35-39
    500#       ≤3 15-25 25-40 25-45 10-20 ≤10 ≤5     45-55
    600#         ≤10 10-30 30-50 15-35 0-20 ≤5 ≤2 ≤1 55-65
    650#         ≤8 10-25 20-40 20-40 ≤15 ≤7 ≤2  ≤1  60-70
    750#           ≤10 5-25 25-45 20-40 ≤15 ≤5 ≤2  75-85
    1000#             ≤3 10-30 35-55 15-35 ≤10 ≤5 105-115
    1250#             ≤2 0-20 30-50 25-45 0-20 ≤8 125-135
    1500#               ≤5 5-25 40-60 25-40 ≤15 160-170
    上一條記錄: 鑄件缺陷修補機
    國內統一連續出版物號:61-1133/TG |國內發行代碼:52-94 |國際標準出版物號:1001-3814 |國際發行代碼:SM8143
    主管單位:中國船舶重工集團公司  主辦單位:中國船舶重工集團公司熱加工工藝研究所中國造船工程學會船舶材料學術委員會
    開戶銀行:工商銀行陜西省興平市板橋支行  帳戶名:中國船舶重工集團公司第十二研究所  帳號:2604031909022100458
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