Home > About Us> Tech & Service

自蔓燃刚玉陶瓷复合钢管

自蔓燃刚玉陶瓷复合钢管是利用自蔓延高温合成技术,即“SHS”技术复合而成,属国家高科技“863”攻关项目,是原国家冶金工业部、电力部立项重点推广的新产品,该管从内到外由陶瓷(刚玉)层、过渡层和钢层三部分组成。

陶瓷复合钢管,全称陶瓷内衬复合钢管,是采用高技术生产工艺--自蔓燃高温离合合成法制造。该管从内到外分别由刚玉陶瓷、过渡层、钢三层组成,陶瓷层是在2200℃以上高温形成致密刚玉瓷(AL2O3),通过过渡层同钢管形成牢固的结合。复合管因充分发挥了钢管强度高、韧性好、耐冲击、焊接性能好以及刚玉瓷高硬度、高耐磨、耐蚀、耐热性好,克服了钢管硬度低、耐磨性差以及陶瓷韧性差的特点。因此,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、耐蚀管道。

1、耐磨性好
陶瓷复合管由于内衬层为刚玉陶瓷(a-AL2(下标)O3(下标)下同),莫氏硬度可达9.0相当于HRC90以上。因此对各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:
陶瓷复合管由于内表面光滑程度优于任何金属管道,清水阻力系数0.0193,比无缝管稍低。

3、耐腐蚀,防结垢:
由于该管陶瓷层为(a-AL2O3),属中性物质。因此具有耐酸碱和耐海水腐蚀,并同时具有防垢等我

4、耐温性能与耐热冲击性能好:
由于该刚玉陶瓷(a-AL2(下标)O3(下标))为单一稳定的晶态组织,因此复合管可在-5--700℃温度范围内长期正常运行。材料线膨胀系数6-8*10(-6上标)/℃,约为钢管的确1/2左右。因此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。经同内径的铸石管重量轻35-50%;比耐磨合金

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。

什么是离心铸造

离心铸造是将液体金属注入高速旋转的铸型内,使金属液在离心力的作用下充满铸型和形成铸件的技术和方法。离心力使液体金属在径向能很好地充满铸型并形成铸件的自由表面;不用型芯能获得圆柱形的内孔;有助于液体金属中气体和夹杂物的排除;影响金属的结晶过程,从而改善铸件的机械性能和物理性能。 根据铸型旋转轴线的空间位置,常见的离心铸造可分为卧式离心铸造和立式离心铸造。铸型的旋转轴线处于水平状态或与水平线夹角很小(4°)时的离心铸造称为卧式离心铸造。铸型的旋转轴线处于垂直状态时的离心铸造称为立式离心铸造。铸型旋转轴线与水平线和垂直线都有较大夹角的离心铸造称为倾斜轴离心铸造,但应用很少。

Self-propagating High-temperature Synthetic process
Self-propagating High-temperature Synthetic process

离心铸造最早用于生产铸管,随后这种工艺得到快速发展。国内外在冶金、矿山、交通、排灌机械、航空、国防、汽车等行业中均采用离心铸造工艺,来生产钢、铁及非铁碳合金铸件。其中尤以离心铸铁管、内燃机缸套和轴套等铸件的生产最为普遍。对一些成形刀具和齿轮类铸件,也可以对熔模型壳采用离心力浇注,既能提高铸件的精度,又能提高铸件的机械性能。

离心铸造的优点:

1)几乎不存在浇注系统和冒口系统的金属消耗,提高工艺出品率;

2)生产中空铸件时可不用型芯,故在生产长管形铸件时可大幅度地改善金属充型能力,降低铸件壁厚对长度或直径的比值,简化套筒和管类铸件的生产过程;

3) 铸件致密度高,气孔、夹渣等缺陷少,力学性能高;

4) 便于制造筒、套类复合金属铸件,如钢背铜套、双金属轧辊等;成形铸件时,可借离心力提高金属的充型能力,故可生产薄壁铸件。

离心铸造的缺点:

1)用于生产异形铸件时有一定的局限性。

2)铸件内孔直径不准确,内孔表面比较粗糙,质量较差,加工余量大; 3)铸件易产生比重偏析,因此不适合于合金易产生比重偏析的铸件(如铅青铜),尤其不适合于铸造杂质比重大于金属液的合金。

基本原理 

很多高放热SHS体系的燃烧温度超过燃烧产物的熔点,燃烧后的产物是熔体。这种SHS体  系与常规的冶金方法相结合,产生了SHS技术,利用SHS法得到熔体,用常规冶金法处理熔体[14,15]。SHS冶金包括SHS铸造和SHS-离心技术。铝热反应由于其高放热而被广泛用于SHS冶金。其化学反应式为:    

化学反应式

SHS-离心法

在许多石油化工、电力及冶金行业,钢管的使用寿命成为人们最关心的问题,然而,由于钢管的内径小、长度大,用其它的防腐处理方法很难实现,而用此工艺便可很容易地解决。它是利用铝、镁、硅、锆等粉末与金属氧化物的高放热化学反应,依靠化学反应潜热加热反应物——陶瓷与金属或陶瓷与陶瓷。由于反应温度超过了陶瓷及金属的熔点,整个体系处于熔融状态。在离心力的作用下,熔体按密度大小分层,大密度的组分与钢管基体结合,小密度的陶瓷组分涂覆在钢管的内壁,形成陶瓷涂层。目前,涂层内衬钢管的生产技术已相当成熟。

SHS-离心法

SHS-重力法

比较直的钢管采用离心法是可以的,如果是弯管或其它不规则形状的钢管仍采用离心法显然 是不可行的,经过工程技术研究人员的努力,利用重力原理使得在SHS过程中熔体涂覆到钢管的内壁。因铝热反应产生的高温使反应物处于熔融状态,钢管中在反应物料上形成了由金属Fe及陶瓷两相熔体组成的熔池,由于Fe的密度大于涂层相的密度,在重力作用下,两熔体分离,Fe沉积于熔池的底部,熔融的涂层相浮于熔池的上部。随着自蔓延反应的进行,液面逐渐下降,导致Fe的液相和陶瓷液相依次附与钢管内壁并结晶凝固,从而在钢管内壁形成连续均匀的涂层。

其原理如图所示。

SHS-重力法原理

离心铸造工艺过程:

立式离心铸造机

金属过滤:有些合金液中有较多难于除去的渣滓,可在浇注系统中放各种过滤网清除渣子,如泡沫陶瓷过滤网、玻璃丝过滤网等。

浇注温度:离心铸件大多为管状、套状、环状件,金属液充型时遇到的阻力较小,又有离心压力或离心力加强金属液的充型能力,故离心铸造时的浇注温度可较重力浇注时低5~10°C。

离心铸造双金属耐磨管设备
离心铸造双金属耐磨管设备

铸型转速:是离心铸造时的重要工艺因素,不同的铸件,不同的铸造工艺,铸件成形时的铸型转速也不同。过低的转速会使立式离心铸造时金属液充型不良,卧式离心铸造时出现金属液雨淋现象,也会使铸件内出现疏松、夹渣、铸件内表面凹凸不平等缺陷;转速太高,铸件上易出现裂纹、偏析等缺陷,砂型离心铸件外表面会形成胀箱等缺陷,还会使机器出现大的振动、磨损加剧、功率消耗过大。所以,铸型转速的选择原则应是在保证铸件质量的前提下,选取最小的数值 熔渣利用:为克服厚壁离心铸件双向凝固所引起的皮下缩孔缺陷,可在浇注时把造渣剂与金属液一起浇入型内,熔渣覆盖在铸件内表面上,阻止内表面的散热,创建由外向里的顺序凝固条件,消除皮下缩孔。同时,造渣剂还可起精炼金属液的作用。

涂料使用:离心金属型用涂料的组成与重力金属型铸造相似。浇注细长离心铸件时,由于清除铸型工作面上的残留涂料较为困难,故涂料组成中粘结剂在高温工作后的残留强度应尽量低,以便于清除。 铸件脱型:为了提高生产效率,在保证质量的前提下,应尽早进行铸件的脱型。有时为了防止铸件的开裂,脱型后的铸件应立即放入保温炉或埋入砂堆中降温。对一些不易脱型又需缓冷防裂的铸件,则可在铸型停止转动后立刻把有铸件的铸型从离心铸造机上取下,埋入砂堆中缓慢冷却,至室温时在行脱型。 浇注系统:离心铸造时的浇注系统主要指接受金属的浇杯和与它相连的浇注槽,有时还包括铸型内的浇道。 浇注定量:离心铸件内径常由浇注金属液的数量决定,故在离心浇注时,必须控制浇入型内的金属液数量,以保证内径大小。

刚玉

刚玉(Corundum)名称源于印度,系矿物学名称,宝石学上具备宝石条件的称红宝石(Ruby)、蓝宝石(Sapphire)。刚玉Al2O3的同质异像主要有三种变体,分别为α-Al2O3、β-Al2O3、γ-Al2O3、,根据X衍射分析确还有η-Al2O3(等轴晶系)、ρ-Al2O3(晶系不确定)、χ-Al2O3(六方晶系)、κ-Al2O3(六方晶系)、δ-Al2O3(四方晶系)、θ-Al2O3(单斜晶系)。刚玉颜色多种,有无色、白、金黄(色素离子Ni、Cr)、黄(色素离子Ni)、红(色素离子Cr)、蓝(色素离子Ti、Fe) 、绿(色素离子Co、Ni、V)、紫(Ti、Fe、Cr)、棕、黑(色素离子Fe、Fe)、白炽灯下蓝紫、日光灯下红紫效应(色素离子V)。  刚玉是一种由氧化铝(Al2O3)的结晶形成的宝石。掺有金属铬的刚玉颜色鲜红,一般称之为红宝石;而蓝色或没有色的刚玉,普遍都会被归入蓝宝石的类别。  

刚玉在摩氏硬度表中位列第9级。比重为4.00,有六角柱体的晶格结构。因刚玉的硬度,和相对比钻石更低廉的价钱,它成为了砂纸及研磨工具的好材料。  

刚玉有玻璃光泽,硬度9。比重395-410。在高温富铝贫硅C的条件下形成,主要与岩浆作用、接触变质及区域变质作用有关。  

刚玉是铝矾土为主要原料经矿业炉炼出的人造材料,可做磨料和耐火材料。纯度较高的为白色叫白刚玉,含有少量杂质的为棕色叫棕刚玉。

 

Basic analysis of performance of wear-resisting elbow

wear-resisting elbow

The wear-resistant elbow is widely used in the industry of wear and tear serious such as: thermal power, steel, metallurgy, cement, machinery, coal, mining, chemical, port etc. The wear-resistant elbow has the performance of good wear resistant performance, running resistance is small,corrosion resistant, anti-fouling, good performance, low project cost, easy to install and so son.

Wear-resistant elbow is the use of special temperature-resistant strong adhesive will be special corundum wear-resistant ceramic plate paste in the pipe elbow inside, solve the thermal power, metallurgy, steel, cement and other industries, such as material materials elbow wear serious problems, at the same time, the use of steel pipe elbow and wear-resistant ceramic paste integrated solution to facilitate rapid replacement and construction.

Depending on the working conditions, the production process is also different, you can use the direct paste method, bolt loading method or one molding method.

One pipe forming method (RHS) is the use of selected alumina particles, with a variety of molding methods fired lined pipe, and then with a special filler will be integrated into the pipe pouring in the interior of the pipe. The pipe formed by this method is different from the ceramic composite pipe formed by the celebrate combustion technology, and the inner liner ceramic crystal is identical with the SMD ceramics. The utility model has the advantages that the inner wall of the pipe is smooth and has very good abrasion resistance, which is suitable for the slag and ash removal system with high requirements for the piping material.

The bolt loading method is a ceramic assembling method using adhesive bonding, ceramic chip mutual pressure inserting and bolt mounting card triple fixing. Due to the use of triple fixed method, ceramics and equipment has become one, even if the 1000 ℃ above the high temperature operation, ceramics will not fall off.

Wear-resistant elbow product performance:

1, wear Resistance: ceramic composite steel pipe lining ceramic layer in the Al2O3 content is greater than 95%, micro-hardness hv1000-1500, and thus has a very high wear resistance, its wear resistance than quenched the medium carbon steels 10 times higher than tungsten carbide drilling.
2, corrosion-resistant ceramics are neutral materials, stable chemical properties, with excellent corrosion resistance and acid resistance, can resist a variety of inorganic acids, organic acids, organic solvents, and its corrosion resistance is more than 10 times times the degree of stainless steel.
3, excellent heat resistance, can withstand temperature of more than 2000 ℃, in the scope of -50℃~900℃ long-term work.
4, easy to weld: Ceramic liner composite steel pipe can be welded through the outer steel pipe to achieve the purpose of connection, ceramic liner composite steel pipe can be welded, flange, flexible quick connectors, such as the connection, installation is very convenient.

Application industry:

1. High wear-resistant pipeline: Thermal power generation, Ash (slag) conveying, pulverized coal conveying pipelines, concentrator tailings conveying and concentrate conveying pipelines, port pulp and sediment conveying pipelines, pulverized coal slurry conveying pipelines, etc.
2. Heavy medium Select (WASH) coal plant coal conveying pipeline, high corrosion resistance thermal power desulfurization slurry slag conveying pipeline.
3. Molten aluminum liquid conveying pipeline.
4. High abrasion resistance, high corrosion resistance and high temperature resistance are required.

92% Ceramic Lined Coal Steel Pipes

92% Ceramic Lined Coal Steel Pipes

The ceramic-lined steel pipe is a kind of ceramic and metal organic combining composite pipe, ceramic tube is a combination of alumina the advantages of high hardness, good chemical inertness and steel, excellent wear resistance, corrosion resistance, heat resistance and thermal shock and mechanical shock resistance.

Product features:

The ceramic-lined steel pipe is a kind of ceramic and metal organic combining composite pipe, ceramic tube is a combination of alumina the advantages of high hardness, good chemical inertness and steel, excellent wear resistance, corrosion resistance, heat resistance and thermal shock and mechanical shock resistance.

Product performance:

1, abrasion resistance, ceramic composite steel pipe lined with porcelain layer of Al2O3 content is more than 95%, micro hardness HV1000-1500, and therefore has a very high wear resistance, its wear resistance more than 10 times higher than the medium carbon steel after quenching and is better than that of tungsten carbide drill.
2, the corrosion resistance of ceramics is a neutral material, stable chemical performance, excellent corrosion resistance and acid resistance, can resist various inorganic acid, organic acid, organic solvents, such as its resistance to corrosion is stainless steel is more than ten times.
3, heat-resisting performance, can heat resistance above 2000 ℃, can be in - 50 ℃ ~ 900 ℃ within the scope of work for a long time.
4, easy to welding: the ceramic-lined steel composite pipes can be achieved through the outer steel tube welding connection, the purpose of the ceramic-lined steel composite pipes can be connected by welding, flange, such as flexible quick connectors, installation is very convenient.

Application industry:

1. High wear-resisting pipe: thermal power, thermal power plant pulverized coal ash slag () transmission, pipeline, concentrator tailings conveying pipeline, and concentrate port pulp and sediment pipeline, pulverized coal slurry pipeline, etc.
2. Heavy media select (wash) coal plant coal conveying pipeline, requiring high corrosion resistance thermal power generation desulfurization slurry transport pipeline.
3. Molten aluminum liquid transport pipeline.
4. High wear resistance, high corrosion resistance and high temperature resistance.

High Abrasion 92% Ceramic Lined Coal Steel Pipes

High Abrasion 92% Ceramic Lined Coal Steel Pipes

Due to the High Abrasion 92% Ceramic Lined Coal Steel Pipes have wear-resisting, corrosion resistant, heat resistant properties, thus can be widely used in electric power, metallurgy, mining, coal, chemical and other industries as conveying sand, stone, coal powder, ash, liquid aluminum and other material grinding particles and corrosive medium, is an ideal abrasion resistant pipe.

The features of High Abrasion 92% Ceramic Lined Coal Steel Pipes are as follows:

(1) good abrasion resistance, ceramic composite wear-resistant tube layer for corundum ceramic, mohs hardness above 9.0, equivalent to more than HRC90, so on electric power, coal, metallurgy, mining transporting medium has high wear resistance;
(2) ceramic composite wear-resistant pipe can in - 50 -900 ℃ temperature range of the normal operation for a long time, data linear expansion coefficient (6 - 8) * 10-6 / ℃;
(3) loss of running resistance;
(4) low project cost;
(5) installation construction profit.
The ceramic composite wear-resistant tube is widely used in mining, metallurgy and other professions besides ash, slag discharge pipe, powder and powder.

Application of High Abrasion 92% Ceramic Lined Coal Steel Pipes

Suitable for thermal power, steel, smelting, machinery, coal, mining, chemical, cement, port terminals, and other enterprises of the coal transporting system, pulverizing system, ash discharge and dust removal system all wear large mechanical equipment, can choose according to different requirements of different types of products.

Wear-resistant-pipe-lined-by-ceramic

High Abrasion 92% Ceramic Lined Coal Steel Pipes
High Abrasion 92% Ceramic Lined Coal Steel Pipes 92% Ceramic Lined Coal Steel Pipes
92% Ceramic Lined Coal Steel Pipes
Wear resistant ceramic ring composite steel pipe
Wear resistant ceramic ring composite steel pipe
ceramic tile lined elbow with flange
Ceramic tile lined elbow with flange

Alumina ceramic lining for wear resistant

Ceramic tile lined pipe_process Ceramic patch
Ceramic tile lined pipe process Ceramic patch
Wear resistant ceramic ring
Wear resistant ceramic ring
alumina ceramic lining for wear resistant
alumina ceramic lining for wear resistant

Abrasion Resistant Alumina Ceramic

Fine grain, high-grade alumina ceramic is the industrial workhorse material for combating sliding and fine particle abrasion. Alumina ceramic has a proven track record in providing excellent value in many of the most troublesome wear applications and is typically very economical and appropriate in many environments. Alumina ceramic is versatile in that it can be pre-engineered into complex tiling systems and can be applied from very thin linings of just 1.5mmm or 1/16” thick up to 76mm or 3” thick. Addtionally alumina can be formed into large monolithic pieces and cyliners that can create extremely effective abrasion resistant linings for elbows, pipes, tees and wye fittings.

These lining typical outlast other solutions, like chrome carbide or AR plate by 10 times the wear life and with less weigth.

Abrasion Resistant Alumina Ceramic

Critical to ensuring the success of any lining is it correct installation or application. Time and experience proven applications methods include installing liners using epoxy, weld in tiles, RTV silicone, high temperature mortars, interference and shrink fit, bolt in, key arched designs. The result is a superior wear system. These liners can be formed from monolithic ceramics or take the form of integrated tile systems cut in the green state to fit even the most complex fabrications.

Technical Data 92 series 95 series 
Alumina Content  92  95 
Hardness  ( Mohs) 9 9
Water  Absorption 0.01%  0.01% 
Fluctual Strength 255  275
Bearable Temperature 1400  1400 
Density 3.60-3.62 g/cm3 3.65-3.68g/cm3 

This is a complex process.Our engineers understand wear problems and specify solutions to meet your operational environment. Material properties,tolerances, flatness,attachment methods, and material costs are all considered in a wear solution.

Selection of the appropriate lining method can mean the difference between success and failure in any application.

Typical applications for these ceramic liners include:

  • Wear Panels
  • Mill Liners
  • Classifier Cones
  • Pulverized Fuel Piping
  • Chutes & Hopper Ball Mills
  • Ball mills
  • Coal Pulverizer Housings
  • Exhauster Housings
  • Nozzles
  • Pneumatic Conveying Lines
  • Elbows
  • Cyclone Separators
  • Slurry Lines
  • Coal Valves

Application temperature: up to 1000°C / 1832°F depending on application and geometry.

Advantages: highly wear resistant, smooth surface that lasts, no corrosion, available from 1.5 mm thickness.

Ceramic rubber Wear Liner

Ceramic-Rubber compound lining plate is compounded by high alumina ceramics and excellent natural rubber through special process. The excellent damping performance of natural rubber greatly lowers the noise generated in the transportation, which fully settled a series of issues such as impact, abrasion and noise.
Features for this kind wear resistant lining:
1) Outstanding wear-resistant performance: the working face of ceramic-rubber compound lining plate is high alumina ceramics, the hardness of which is second to diamond, so it has excellent wear-resistance.
2) Optimum impact resistance: Compared with ordinary ceramic tiles, the Ceramic-rubber plate under the special process treatment changes the ceramic mechanism of easy breakage. With the characteristic of shock absorption of natural rubber, the impact-resistant performance of ceramic will be highly improved which is more than 10 times of ordinary ceramic tiles.
3) Effective noise reduction: excellent damping of natural rubber absorbs a great deal of vibration energy during shocking, and the flexible molecular chain within the natural rubber will be beneficial for damping, which greatly reduces the noise in transportation. Laboratory test indicates the value of noise reduction up to over 30dB.
4) Adjustable specification: the thickness of rubber and ceramic, the shape of ceramic-rubber plate can be adjusted accordingly to fit for the various conveying equipments.

The Type Of Alumina Ceramics

Alumina ceramics are divided into two types: high purity and common type.

Al2O3 content of high purity alumina ceramics is 99. More than 9% of the ceramic material, due to the sintering temperature up to 1650-1990 ℃, the transmission wavelength of 1 ~ 6 microns, usually made from molten glass to replace platinum crucible; It is used as the sodium lamp tube with its transmittance and alkali resistance. In the electronics industry, it can be used as integrated circuit board and high frequency insulation material.

Ordinary alumina ceramics are divided into 99 porcelain, 95 porcelain, 90 porcelain and 85 porcelain in accordance with Al2O3 content. Sometimes the content of Al2O3 is in 80% or 75% of the ceramic series. Among them, 99 alumina ceramic materials are used to make high temperature crucible, furnace tube and special wear-resisting material such as ceramic bearing, ceramic seal and water valve, etc. Alumina porcelain is mainly used as corrosion resistant and wear-resisting parts; In China, due to the constant incorporation of the sliding stone, the electrical performance and mechanical strength can be improved with metal sealing, such as molybdenum, niobium and tantalum, and some used as vacuum devices.

Features

High hardness
Rockwell hardness of high alumina ceramics is up to HRA80-90 which is second only to diamond and far exceeds wear-resistant steel stainless

Excellent wear resistance
The wear resistance of high alumina ceramics is 266 times that of manganese steel and 171.5 times that of high chromium cast iron.According to our investigation & follow-up to the clients, the service life of equipment can be prolonged over 10 times under the same working conditions.

Corrosion resistance
High alumina ceramics are inorganic oxides with extremely stable molecular structure and no electrochemical corrosion, thus they can resist erosion of acid, alkali, salt solutions and organic Solvents.

Thermostability
Working temperature of high alumina ceramics can be as high as 1400℃.

Good self-lubricity
High alumina ceramics have the properties of self-lubricity and inadhesion, the roughness is only 1/6 that of steel pipes thus less flow Resistance.

Light weight
The density of high alumina ceramics is about 3.6g/cm3, which is only half that of steel, thus easy for construction and installation

Alumina Ceramic Lined Coal Pipes

Alumina Ceramic Lined Coal Pipes
Alumina Ceramic Lined Coal Pipes

Our organization is the manufacturer high quality Fly ash Handling pipes,coal pipes, Bend & Pipe, elbows, reducer pipes straight pipes etc. These pipe are designed and lined with high quality Alumina ceramic material like alumina rings, alumina tiles etc .

We can produce Ceramic lined pipes as per customer's requirement and application.

Applications

1. The coal fired thermal power plant
2. Steel Industry
3. Mechanical industry
4. Chemical Industry
5. Mine, coal industry
6. Cement industry
7. Smelting industry

Product Advantages

1. Superior wear resistance
2. Chemical and impact resistance
3. Erosion resistance
4. Smooth inner wall
5. Easy installation
6. Saved maintenance time and expenditures
7. Longer service lifetime
8. Competitive and reasonable price

Wear Resistant Ceramic lined Pipe

Wear Resistant Ceramic lined Pipe

The Wear Resistant Ceramic lined Pipe (wear resistant ceramic pipe,cheap ceramic lined pipe) of the laminable tube is used to glue the ceramic sheet of alumina ceramic to the inner wall of the pipe with high temperature and high temperature. After the heating and curing, it forms a strong anti-friction layer.

The production process of this product is relatively simple, the production cycle is short, the cost is relatively low. Wear-resisting bend (wear resistant ceramic pipe)just as its name implies is a relatively traditional is more wear-resisting bend (wear resistant ceramic pipe), adopted the new wear-resistant plastic production, used in large industrial, currently occupies the market share of around 80%.

Technical details of the Wear Resistant Ceramic lined Pipe

 Items   Index
  Alumina content 92%
  Bulk Density 3.62g/cm³
  Rockwell Hardness (HRA) 90
  Compressive Strength 850MPa
  Fracture Toughness 4.8MPa.M1/2
  Bending Strength 290MPa
  Thermal Conductivity 20℃ 20W/m.k
  Coefficient of Thermal Expansion 7.2×10-6m/×m.k
   Young's Modulus  20℃ 277GPa
   Shear Modulus   20℃ 113GPa
  Surface  Finish: As Fired 1.27mm

Abrasion Resistance Ceramic Lining Pipe

Abrasion Resistance Ceramic Lining Pipe

Our Abrasion Resistance Ceramic Lining Pipe are high quality Fly ash Handling Bend & Pipe, elbows, reducer pipes straight pipes etc.These pipe are designed and lined with high quality Alumina ceramic material like alumina rings, alumina tiles etc .

We can produce Ceramic lined pipes as per customer s requirement and application.

Applications of Abrasion Resistance Ceramic Lining Pipe
1.The coal fired thermal power plant
2.Steel Industry
3.Mechanical industry
4.Chemical Industry
5.mine, coal industry
6.Cement industry
7.Smelting industry

Abrasion Resistance Ceramic Lining Pipe Advantages
1.Superior wear resistance
2.Chemical and impact resistance
3.Erosion resistance
4.Smooth inner wall
5.Easy installation
6.Saved maintenance time and expenditures
7.Longer service lifetime
8.Competitive and reasonable price

Additional Information:
Minimum Order Quantity: 3 Pcs

Cast basalt lined steel pipe

Cast basalt lined steel pipe

After 30 years of practical use proved cast basalt lined steel pipe is a reliable and effective combination of wear—resistant materials. Be used in a variety of transportation of corrosive materials in working condition.

Cast basalt lined steel pipe is consist of steel pipe, cast basalt pipe and the concreteness of cement mortar.

The excellent performance of cast basalt lined steel pipe is that it sets tenacity of steel pipe, abrasive resistance of cast basalt pipe, concreteness of cement mortar in one.

This greatly improves the products adaptive capacity in complicated operation conditions. At the same time. cement mortar is selected as the filling material and this can make the inside surface of steel pipe in alkali mediums. So the surface of steel pipe generates purifying films. These films can prevent being rusted.

The parameters of the outside steel pipe will be decided according to the working pressure of the system.

The connection of the pipes and fitting will be of flange connections, easy—flexible joint connection or by welding.

Cast basalt lined steel pipe, as both a wear—resistant and corrosion—resistant materials, the transport properties of wear or corrosion of materials, after thirty years of practical verification, cast basalt lined steel pipe can be well done.

Flange connection is one kind of common pipeline installation connections. By two pieces of flanges,pipeline,valve,equipments are connected and it forms a tight piping system. When pipeline pressure is larger, flange connection is priority secection. Flanges have lots of differents sizes. Flange size is determined according to pipeline normal diameter and pipeline operation pressure.

Abrasion resistant pipe specification, Standard and identification

Because the outer surface behaves like mild steel, the product can be cut and welded with proper procedure in the field, configured into a variety of fittings, and can accept the standard end options of flanges, weld rings and couplings.

Application of Abrasion resistant pipe

Abrasion resistant pipe applied in coal-fired power plant ash and slag discharge tube, powder, powder tube, desulfurization pipeline,in addition also widely used in the following industries:

Q&A

Self-propagating high temperature synthesis (SHS) is used to describe a process in which the initial reagents (usually powders), when ignited, spontaneously transform into products due to the exothermitic heat of reaction.

A well-known example of SHS reaction is the thermite reaction given below:

化学反应式

This reaction generates temperatures above the melting point of alumina and is used in the thermit welding process for joining railway lines.

Several other terminologies - such as combustion synthesis, gasless combustion or self-propagating exothermic reaction - are used to describe the process.

The types of material that can be formed using this process include metal borides, silicides, carbides, nitrides, sulphides, aluminides and oxides.

Abrasive Applications

Coal preparation plant site
+ Suitable for conveying coal


Straight pipes be
Long-term use in power plants


Pipe elbows be Long-term
use in power plants

One-hundred-twenty-nine-million tons of coal ash—a byproduct of the coal burning process—is produced every year. Most power plants transport the coal ash in liquid form to large surface impoundments or in solid form at landfills near the facility through long lengths of steel piping, which can range in length from several thousand feet to miles.

Limestone slurry is also commonly used by coal-fired plants for the effective removal of sulfur dioxide and hydrogen chloride from flue gases. These wet scrubber flue gas desulfurization (FGD) systems utilizes a pumped in limestone slurry through which flue gas containing SO2 is passed in absorber spray towers. The limestone slurry reacts with the flue gas, removing the SO2. The limestone in slurry is then converted into calcium sulfate. This waste material produced by the process is then pumped out from the bottom of the spray towers through steel pipe for further treatment for use in commercially viable by-products such as gypsum board and cement.

To deal with the extremely abrasive and caustic nature of these various slurries, plant maintenance managers are looking to a variety of “abrasion resistant” steel pipe products and accessories to replace standard mild steel pipe in these high wear areas.

Pipe Options

Most abrasion resistant pipe options operate on the premise that when two objects meet, the harder object wins. As such, products are available in a variety of increasing hardness, measured on the Brinell Scale from A-R steel (200 BHN) through iron cast pipe (up to 800 BHN).

Unfortunately, any product that is very hard throughout the wall thickness is also brittle. This brittleness is unacceptable as piping systems are constantly flexing and moving as a result of pressure surges and spikes and due to mechanical and physical contact at the facility.
However, one type of pipe delivers the best of both worlds: an induction hardened pipe with an abrasion resistant inner surface that tapers to a strong, yet ductile outer surface.

At 600 BHN, the inner surface of this induction hardened pipe can withstand most common abrasives and tapers to a 250 BHN outer surface that is ductile enough to accommodate normal handling during shipment, installation and maintenance. With this process, pipe can be created in various diameters up to 40”, in varying lengths and wall thickness.

Warranty

We are Quality Department tests and ensures all of our products are 100% inspected unreported. To an offer we customers additional corps of mind, all our products carry a 24-month warranty against defects or faulty workmanship.We fluid-flow products such as pipe and fittings, chokes, orifice plates, etc, carry a warranty against, erosion, defects, and/or faulty workmanship.

The warranty is determined to each creator and the maximum duration maximally in service. Should any of the RS fail within the warranty period, We'll replace or repair the defective product (s) at No. end user. Please contact the Sunny steel for details on the How to obtain a warranty for our products.

Inspections

As part of our quality regimen, 100% of incoming raw materials, semi-finished products, as well as finished products are thoroughly inspected prior to being entered into our inventory. We have established multiple hold points throughout fabrication as well as a comprehensive final inspection for all products.

ction for all products.



About Sunny Steel

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.