耐磨陶瓷钢管

Ceramic-lined composite steel pipe has excellent heat resistance, wear resistance, mechanical and thermal shock resistance, easy welding and installation, especially for wear and scouring serious material transport occasions, such as coal-fired power generation, metallurgy, coal, mining.

Geological and other industries of the material pipeline transportation. According to the use of electricity, coal, metallurgy and other industrial sectors for many years, compared with ordinary seamless steel pipe, ceramic-lined composite pipe service life of ten times the growth, can replace the cast stone pipe, alloy pipe, organic material liner , Is an ideal wear-resistant pipe. The product in 1994, respectively, through the Ministry of Metallurgy and the Ministry of Electric Power and the success of product identification (Metallurgical Ministry of Metallurgical Branch of the rule of 372 372, the Ministry of Electric Power Supervisor 94 word on the 30th) is the “863” high-tech new materials The Committee of Experts focused on supporting and promoting the project. And the State Science and Technology Commission in 1995 included in the national Torch Program.

Composite pipe has a good wear resistance, heat resistance, corrosion resistance and mechanical shock and thermal shock, weldability, and other comprehensive performance. Is the transmission of particulate materials, grinding, corrosive media, such as the ideal wear-resistant pipe corrosion.
As the tube has a wear-resistant, corrosion resistance, heat resistance, it can be widely used in electric power, metallurgy, mining, coal, chemical and other industries as conveying sand, stone, coal, ash, aluminum and other grinding granular materials And corrosive media, is an ideal wear-resistant corrosion pipe. Ceramic steel pipe with the traditional steel pipe, wear-resistant alloy cast steel pipe, cast stone pipe and steel-plastic, steel and rubber, etc. are essentially different. Ceramic steel pipe is the outer layer, the inner layer is corundum. Corundum layer Vickers hardness of up to 100-1500 (Rockwell hardness of 90-98), the equivalent of tungsten cobalt hard gold. Wear resistance than carbon steel pipe 20 times higher than it is usually bonded to the corundum wheel performance is much better. Corundum grinding wheel is still a variety of grinding hardened steel wheel. Ceramic corundum layer of corundum wear can wear. Ceramic wear resistance is mainly by the inner layer of a few millimeters thick corundum layer, the Mohs hardness of 9, second only to diamond and silicon carbide, in all oxides, its hardness is the highest.
At present, the use of wear-resistant ceramic pipe dozens of thermal power plant practice shows: high wear resistance, anti-fluid scouring ability. In the first duct, the elbow wear the fastest, wear-resistant pipe than the thick-walled wear-resistant cast steel pipe to improve more than 5 times.

Application:
1, metallurgy, power industry applications
Metallurgy, power industry to transport coal, ash, mud, lime and other gypsum slurry every year need to consume a lot of metal pipes. The use of ceramic composite pipe to replace other pipes, with high wear resistance, long life, easy installation, significant economic benefits. Shandong Liaocheng Changrun Thermal Power Plant, Liaocheng Zhonghua Power Plant, Beijing Beixin Building Material Group, Henan Hebi Power Plant, Gansu Pingliang Power Plant, Taiyuan Coal Preparation Plant, Hunan Shimen Power Plant, Hebei Jinniu Energy Co., Ltd. Gequan Coal Preparation Plant, Xingtai Coal Preparation Plant And other industrial operation, the operating life of steel pipe is more than ten times or even several times.
2, mining, coal industry applications
(1) mining: mine filling, concentrate powder and tailings transport on the pipe wear serious, the past used slag conveyor pipes such as Panzhihua, Daye and other life of less than a year, to the tube can improve life expectancy 5 times.
(2) coal: Coal and long-distance pipeline transport of coal commonly used in wet transport, requiring both wear and corrosion resistance of the pipe, the tube can be used as longevity pipe, considerable economic benefits.
3, other
(1) The tube does not contaminate and does not adhere to the molten aluminum liquid. For the manufacture of iron pollution-sensitive, and the need to use heavy labor for finishing and maintenance of aluminum equipment, aluminum liquid pipe, riser and so on.
(2) The tube as a result of good wear resistance and heat erosion. For conveying corrosive materials containing solid particles and high-temperature corrosive gases, sulfur-containing geothermal water and other corrosive media.

Characteristics of SHS – self – propagating Ceramic Composite
1, good wear resistance
Ceramic composite pipe As the lining layer of corundum ceramics (a-AL2O3), Mohs hardness of up to 9.0 is equivalent to HRC90 or more. So on the metallurgy, electric power, mining, coal and other industries by the transmission of grinding media have high wear resistance. Confirmed by the industrial operation: the wear life of hardened steel is ten times or even several times.
2, running resistance is small
SHS ceramic composite pipe as the inner surface is smooth, and never rust, nor the inner surface of seamless steel pipe with convex spiral. The internal surface roughness and water resistance characteristics of the test unit, the internal surface smoothness is superior to any metal pipe, clear resistance coefficient of 0.0193, slightly lower than the seamless tube. So the tube has a small operating resistance and other characteristics, can reduce operating costs.
3, corrosion resistance, anti-fouling
As the steel ceramic layer (a-AL2O3), is a neutral character. So it is resistant to acid and alkali and seawater corrosion, and also has anti-scaling and other characteristics.
4, temperature performance and heat-resistant pottery performance
As the corundum ceramic (a-AL2O3), a single stable crystalline structure. So the composite pipe in the -50–700 ℃ temperature range of long-term normal operation. Material linear expansion coefficient of 6-8 × 10-6 / 0C, about 1/2 of the steel pipe. The material has good thermal stability.
5, the project cost is low
Ceramic composite pipe light weight, affordable. Than the same diameter of the cast stone pipe weight 50% lighter than the wear-resistant alloy pipe light weight 20-30%, and wear resistance, corrosion resistance, because the long service life, which hanger costs, handling costs, installation fees and Lower operating costs. The design institute and the construction unit of the actual budget and engineering comparison, the pipe project cost and cast stone tube quite, compared with the wear-resistant alloy pipe, the project cost down about 20%.
6, easy installation and construction
As the tube light weight, and welding performance. Therefore, welding, flange, quick connection, etc., construction and installation is convenient, and can reduce the installation cost.


陶瓷内衬复合钢管具有优异的耐热,耐磨,抗机械和热冲击性能,容易焊接和安装,特别适用于磨损,冲刷严重的物料输送场合,如燃煤发电,冶金,煤炭,矿山。地质等行业的物料管道输送。据电力,煤炭,冶金等工业部门多年的使用情况,和普通无缝钢管相比,陶瓷内衬复合钢管的使用寿命成十倍的增长,可以替代铸石管,合金管,有机材料衬管等,是一种理想的耐磨管道。该产品于九四年分别通过了冶金部和电力部的成功和产品鉴定(冶金部93冶科成监字372号,电力部94电产监字30号)是国家“863”高科技新材料专家委员会重点支持和推广项目。并被国家科委列入九五年国家级火炬计划。
复合管具有良好的耐磨、耐热、耐蚀及抗机械冲击与热冲击、可焊性好等综合性能。是输送颗粒物料、磨削、腐蚀性介质等理想的耐磨蚀管道。
由于该管具有耐磨、耐蚀、耐热性能,因此可广泛应用于电力、冶金、矿山、煤炭、化工等行业作为输送砂、石、煤粉、灰渣、铝液等磨削性颗粒物料和腐蚀性介质,是一种理想的耐磨蚀管道。陶瓷钢管与传统的钢管、耐磨合金铸钢管、铸石管以及钢塑、钢橡管等有着本质性区别。陶瓷钢管外层是钢管,内层是刚玉。刚玉层维氏硬度高达100—1500(洛氏硬度为90-98),相当于钨钴硬金。耐磨性比碳钢管高20倍以上,它比通常粘接而成的刚玉砂轮性能优越得多。现在刚玉砂轮仍是各种磨床削淬火钢主要砂轮。陶瓷钢管中刚玉层可把刚玉砂轮磨损掉。陶瓷钢管抗磨损主要是靠内层几毫米厚的刚玉层,其莫氏硬度为9,仅次于金刚石和碳化硅,在所有氧化物中,它的硬度是最高的。
目前,使用耐磨陶瓷钢管的数十家火电厂实践表明:抗磨损能力高,抗流体冲刷能力强。在一次风管中,弯管磨损最快,管弯管的耐磨性比厚壁的耐磨铸钢弯管提高5倍以上。
应用:
1、冶金、电力行业中的应用
冶金、电力行业输送煤粉、灰渣、泥浆、石灰石膏浆液等每年需要消耗大量的金属管道。采用陶瓷复合管取代其他管道,具有高耐磨、寿命长、安装方便、经济效益显著之特点。经山东聊城昌润热电厂、聊城中华发电厂、北京北新建材集团、河南鹤壁电厂、甘肃平凉电厂、太原市选煤厂、湖南石门电厂、河北金牛能源有限公司葛泉选煤厂、邢台选煤厂等工业运行,其运行寿命是钢管的十几倍甚至几十倍以上。
2、矿山、煤炭行业中的应用
(1)矿山:矿山充填、精矿粉和尾矿运送对管道的磨损严重,以往采用的矿粉输送管道如攀枝花、大冶矿等使用寿命不到一年,改为该管可使寿命提高5倍左右。
(2)煤炭:选煤及长距离管道输煤普遍采用湿法输送,要求输送管既耐磨又耐蚀,采用该管可作为长寿输送管,经济效益可观。
3、其它
(1)该管不污染和不粘联熔融铝液。适用于制造对铁质污染敏感,且使用后需要繁重劳动进行整理和维修的熔铝设备、铝液输送管、升液管等。
(2)该管由于耐磨性能好且耐热蚀。适用于输送含有固体颗粒腐蚀性物料以及高温腐蚀性气体、含硫地热水等腐蚀性介质。
SHS-自蔓燃陶瓷复合管特点
1、耐磨性好
陶瓷复合管由于内衬层为刚玉陶瓷(a-AL2O3),莫氏硬度可达9.0相当于HRC90以上。因此对冶金、电力、矿山、煤炭等行业所输送的磨削性介质均具有高耐磨性。经工业运行证实:其耐磨寿命是淬火钢的十倍甚至几十倍。
2、运行阻力小
SHS陶瓷复合管由于内表面光滑、且永不锈蚀,也不象无缝钢管内表面有凸状螺旋线存在。经有关检测单位对内表面粗糙度及清水阻力特性测试,其内表面光滑度优于任何金属管道,清阻力系数为0.0193,比无缝管稍低。因此该管具有运行阻力小等特点,可减少运行费用。
3、耐腐蚀、防结垢
由于该钢陶瓷层为(a-AL2O3),属中性特质。因此具有耐酸碱和耐海水腐蚀,并同时具有防垢等特性。
4、耐温性能与耐热冲缶性能好
由于该刚玉陶瓷(a-AL2O3),为单一稳定的晶态组织。因此复合管可在-50–700℃温度范围内长期正常运行。材料线膨胀系数6-8×10-6/0C,约为钢管的1/2左右。材料具有良好的热稳定性。
5、工程造价低
陶瓷复合管重量轻,价格适宜。比同内径的铸石管重量轻50%;比耐磨合金管重量轻20-30%,且耐磨、耐蚀性好,因为使用寿命长,从而支吊架费用、搬运费、安装费以及运行费用降低。经有关设计院和施工单位工程预算和工程实际比较,该管工程造价与铸石管相当,与耐磨合金管相比,工程造价下降20%左右。
6、安装施工方便
由于该管重量轻,且焊接性能好。因此可采用焊接、法兰、快速联结等方式,施工安装方便,且可减少安装费用。
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