1-3mm航空飞机跑道用碳化硅 耐磨性好 免费寄样

碳化硅简介

      碳化硅又称碳硅石，是用石英砂、石油焦（或煤焦）、木屑（生产绿色碳化硅时需要加食盐）等原料在电阻炉内经高温冶炼而成。碳化硅应用较广泛、较经济的一种，可以称为金钢砂或耐火砂。在生产和加工碳化硅过程中有大量碳化硅含量90以下的碳化硅形成与产出,俗称为低硅.低含量碳化硅的主要用途为耐火材料行业,炼钢行业的脱氧剂,炮泥,浇铸料,铁沟料。适用于制作耐火材料使用的碳化硅砂或作耐火砂耐火泥用的碳化硅砂。目前我国工业生产的碳化硅分为黑色碳化硅和绿色碳化硅两种，均为六方晶体，比重为3.203.25，显微硬度为28403320kg/mm2。

Silicon carbide is also called the moissanite is using quartz sand and petroleum coke or coal tar, wood chips (green silicon carbide production need to add salt) such as raw materials in the Canon of high-temperature resistance furnace smelting. Silicon carbide the most widely used, one of the most economic, can be called corundum or refractory sand. Have a lot in the process of production and processing of silicon carbide silicon carbide content of less than 90 of the silicon carbide formation and output, commonly known as low silicon. The main purpose of the low content of silicon carbide for refractory industry, steel industry of deoxidizer, stemming, casting materials, iron groove. Silicon carbide is suitable for the production of refractory materials used sand and refractory silicon carbide sand sand refractory mortar. At present, the industrial production of silicon carbide can be divided into two black silicon carbide and green silicon carbide, are the six-party crystal, specific gravity of 3.20 3.25, the microhardness of 2840 3320 kg/was. 

 

碳化硅分类

      碳化硅有黑碳化硅和绿碳化硅两个常用的基本品种：黑碳化硅含SiC约95％，其韧性高于绿碳化硅，黑碳化硅用于加工抗张强度低的材料，如玻璃、陶瓷、石材、耐火材料、铸铁和有色金属等；绿碳化硅含SiC98％以上，自锐性好，绿碳化硅用于加工硬质合金、钛合金和光学玻璃，绿碳化硅用于珩磨汽缸套和精磨高速钢刀具。

Green silicon carbide black silicon carbide and silicon carbide two commonly used basic varieties: (1) black silicon carbide containing SiC by about 95, its toughness is higher than the green silicon carbide, black silicon carbide is used for processing low tensile strength of materials, such as glass, ceramic, stone, refractory material, cast iron and nonferrous metal, etc.; (2) the green silicon carbide containing SiC98 above, good self-sharpening, green silicon carbide is used for processing hard alloy, titanium alloy and optical glass, green silicon carbide for honing cylinder jacket and fine grinding HSS cutting tools.

 

碳化硅用途

      1.磨料磨具方面：碳化硅主要用于制作砂轮、砂纸、砂带、油石、磨块、磨头、研磨膏及光伏产品中单晶硅、多晶硅和电子行业的压电晶体等方面的研磨、抛光等。

      2.化工方面：碳化硅可用做炼钢的脱氧剂和铸铁组织的改良剂，可用做制造四氯化硅的原料，是硅树脂工业的主要原料。碳化硅脱氧剂是一种新型的强复合脱氧剂，取代了传统的硅粉碳粉进行脱氧，和原工艺相比各项理化性能更加稳定，脱氧效果好，使脱氧时间缩短，节约能源，提高炼钢效率，提高钢的质量，降低原辅材料消耗，减少环境污染，改善劳动条件，提高电炉的综合经济效益都具有重要价值。

      3.耐磨、耐火和耐腐蚀材料方面：利用碳化硅具有耐腐蚀、耐高温、强度大、导热性能良好、抗冲击等特性，碳化硅一方面可用于各种冶炼炉衬、高温炉窑构件、碳化硅板、衬板、支撑件、匣钵、碳化硅坩埚等。另一方面碳化硅可用于有色金属冶炼工业的高温间接加热材料，如竖罐蒸馏炉、精馏炉塔盘、铝电解槽、铜熔化炉内衬、锌粉炉用弧型板、热电偶保护管等。碳化硅用于制作耐磨、耐蚀、耐高温等高级碳化硅陶瓷材料。碳化硅还可以制做火箭喷管、燃气轮机叶片等。此外，碳化硅也是高速公路、航空飞机跑道酞阳能热水器等的理想材料之一。

      4.有色金属方面：利用碳化硅具有耐高温，强度大，导热性能良好，抗冲击，作高温间接加热材料，如坚罐蒸馏炉，精馏炉塔盘，铝电解槽，铜熔化炉内衬，锌粉炉用弧型板，热电偶保护管等。

      5.钢铁方面：利用碳化硅的耐腐蚀，抗热冲击耐磨损，导热好的特点，用于大型高炉内衬提高了使用寿命。

      6.冶金选矿方面：碳化硅硬度仅次于金刚石，具有较强的耐磨性能，碳化硅是耐磨管道，叶轮、泵室、旋流器，矿斗内衬的理想材料，碳化硅耐磨性能是铸铁、橡胶使用寿命的5--20倍，碳化硅是航空飞行跑道的理想材料之一。

      7.建材陶瓷砂轮工业方面：利用碳化硅导热系数、热辐射、高热强度大的特性，制造薄板窑具，不仅能减少窑具容量，还提高了窑炉的装容量和产品质量，缩短了生产周期，碳化硅是陶瓷釉面烘烤烧结理想的间接材料。

1. Abrasives: silicon carbide is used mainly for grinding wheel, abrasive paper, abrasive belt, abrasive, grinding, grinding head, grinding paste and photovoltaic products of monocrystalline silicon, polycrystalline silicon and electronic industry in piezoelectric crystal aspects such as grinding, polishing, etc.

2. Chemical industry: silicon carbide can be used as tissue conditioner, steelmaking deoxidizer and cast iron can be used as manufacture of silicon tetrachloride raw material, is the main raw material of silicone industry. Silicon carbide deoxidizer is a new kind of compound deoxidizer, replaced the traditional solid silicon powder carbon powder, and compared with the original process of various physical and chemical performance is more stable, deoxidization effect is good, deoxidize shorter time, save energy and improve the efficiency of steel, improve the quality of steel, reduce raw material consumption, reduce environmental pollution, improve working conditions, improve the comprehensive economic benefits of the electric furnace has important value.

3. Wear-resisting, refractory and corrosion resistant material: using silicon carbide has corrosion resistance, high temperature resistance, strength, good thermal conductivity and impact resistance and other properties, silicon carbide on the one hand, can be used for all kinds of smelting furnace lining, high temperature furnaces artifacts, silicon carbide plate, plate, supports, sagger, silicon carbide crucible, etc. On the other hand, the high temperature of silicon carbide can be used in non-ferrous metal smelting industry indirect heating material, such as vertical distillation furnace, furnace distillation tray, aluminium electrolyzer, copper melting furnace lining, furnace zinc powder with arc plate, the thermocouple protection tube, etc. Silicon carbide used to produce wear-resisting, corrosion resistant, high temperature resistance and other advanced silicon carbide ceramic materials. Silicon carbide can also make the rocket nozzle, gas turbine blades, etc. In addition, silicon carbide and highway, aviation airport runway solar water heater, etc. One of the ideal material.

4. Non-ferrous metals: using silicon carbide has high temperature resistance, strength, good thermal performance, impact resistance, high-temperature indirect heating, such as strong retort furnace, tray distillation furnace, aluminium electrolyzer, copper melting furnace lining, furnace zinc powder with arc plate, the thermocouple protection tube, etc.

5. Steel aspects: using silicon carbide corrosion resistance, thermal shock resistance to abrasion, good characteristics of thermal conductivity, improves the service life for large blast furnace lining.

6. Metallurgical processing aspect: silicon carbide hardness is second only to diamond, strong wear resistance, silicon carbide is wear-resisting pipe, the impeller, pump room, cyclone, ore bucket lined with ideal material, silicon carbide wear-resisting performance is cast iron, 5 -- 20 times the service life of rubber, silicon carbide is one of the aviation flight track ideal material.

7. Building materials ceramic grinding wheel industry: using silicon carbide coefficient of thermal conductivity, thermal radiation, high strength characteristics, manufacturing sheet kiln furniture, not only can reduce the capacity of kiln furniture, also improves the loading capacity of the kiln and the product quality, shorten the production cycle, silicon carbide ceramic glaze is baking sintering indirect materials ideal.

 

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