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咨詢電話：18603798888
定義:
中文名稱：半脆剛玉
英文名稱：Half a crisp corundum
半脆剛玉是以優質鋁礬土為原料， 于電弧爐中經2000°Ｃ以上高溫熔煉而成。具有耐高溫、耐腐蝕、耐沖刷、氣孔率低、熱態性能穩定等優點。
產品簡介:
半脆剛玉是銳石公司為順應國際市場需求而開發生產的新型磨料。半脆剛玉是以優質鋁礬土為原料，在亞白剛玉冶煉基礎上，經過調整冶煉工藝及配比，于電弧爐中經2100℃以上高溫熔煉后，采用特殊破碎處理加工工藝制成。因為它的脆性及韌性都介于白剛玉與棕剛玉之間，所以稱之為半脆剛玉。半脆剛玉具有耐高溫、耐腐蝕、耐沖刷、氣孔率低、熱態性能穩定等優點。磨粒有良好的自銳性，磨削鋒利而不易燒傷工件，當半脆剛玉磨粒進行后處理之后，增加了相對耐磨能力。特別適用于熱敏性鋼及合金、硬度較低的有色金屬材料如鋁、銅、鋅、鉛和非金屬材料如木材、塑料的磨削。廣泛應用于固結磨具的生產制造。
| 粒度號 | F12 | F14 | F16 | F20 | F24 | F30 | F36 | F40 | ||
| 堆積密度 | 1.85 | 1.82 | 1.80 | 1.78 | 1.76 | 1.74 | 1.72 | 1.69 | ||
| 粒度號 | F46 | F54 | F60 | F70 | F80 | F100 | F120 | F150 | ||
| 堆積密度 | 1.67 | 1.65 | 1.63 | 1.60 | 1.57 | 1.54 | 1.51 | 1.49 | ||
| 粒度號 | F180 | F220 | ||||||||
| 堆積密度 | 1.47 | 1.45 | ||||||||
| 粒度范圍 | 化學指標(%) | |||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | |
| 4#—100# | ≥97.5 | ≤0.15 | ≤0.5 | ≤1.5 |
| 120#—240# | ≥97.0 | ≤0.2 | ≤0.8 | ≤1.5 |
主要性能及用途：
半脆剛玉是綜合了棕、白剛玉的部分優點而研制的一種高檔剛玉磨料產品，脆性介于白剛玉和棕剛玉之間,磨削性能獨特,應用范圍較廣.
半脆剛玉有較好韌性和自銳性?？捎糜谔沾赡ゾ?、樹脂磨具及涂附磨具的生產制造。生產的固結磨具有較高的耐用度，良好的自銳性和保持性。在相同的條件下，加工某些工件時，工件的表面質量，加工效率及磨具的耐用度均優于棕、白、鉻、單晶剛玉。用于粗磨可提高加工效率，用于精磨可提高工件的表面質量。
半脆剛玉生產的固結磨具可用來加工普通工業用鋼材、軸承鋼、各種不銹鋼，工具鋼。Cr、w、Mo、V、Co含量較低的特種合金鋼，部分鑄鐵，各種有色金屬，如含Cu、Ni、Mg的鋁合金，含S、Zn的銅，含AL、Zn的鎂合金等。
半脆剛玉生產的涂附磨具除加工上述的金屬材料外，還適用于加工合成材料，各種膠合板、層壓板、薄木板、硬木、軟木、漆器、皮革等。
英文說明：
Semi-friable fused alumina is a new type of abrasive developed by our plant to meet the demands of the international market. With high quality bauxite as raw material, it is produced in the based of smelting the vice-white fused alumina, adjusting smelting process and ratio of raw materials, melting at the high temperature of above 2100℃ in the electric furnace, and using a special broken treatment technique. Since its hardness and toughness is between white fused alumina and brown fused alumina, it is called semi-friable fused alumina. It is characterized by high temperature resistance, corrosion and erosion resistance, low apparent porosity and stable thermal stability. Its grain is characterized by strong self-sharpening, sharp grinding edges and not easy to burn workpiece. After the grain of semi-friable fused alumina is processed, the relative ability of grinding resistance of semi-friable fused alumina increase, which is particularly applicable for grinding thermosensitive steel and alloy, low hardness, lower non-ferrous metal materials such as aluminum, copper, zinc, plumbum and non-metallic materials such as wood, plastic, and it is widely used for the production of bonded abrasives.
Bulk Density Testing Value (g/cm3)
| Grit NO. | F12 | F14 | F16 | F20 | F24 | F30 | F36 | F40 | ||
| B.D. | 1.85 | 1.82 | 1.80 | 1.78 | 1.76 | 1.74 | 1.72 | 1.69 | ||
| Grit NO. | F46 | F54 | F60 | F70 | F80 | F100 | F120 | F150 | ||
| B.D. | 1.67 | 1.65 | 1.63 | 1.60 | 1.57 | 1.54 | 1.51 | 1.49 | ||
| Grit NO | F180 | F220 | ||||||||
| B.D | 1.47 | 1.45 | ||||||||
Semi-friable fused alumina:
| Grit No. | Chemical composition(%) | |||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | |
| 4#—100# | ≥97.5 | ≤0.15 | ≤0.5 | ≤1.5 |
| 120#—240# | ≥97.0 | ≤0.2 | ≤0.8 | ≤1.5 |