Including abrasion resistant ceramic pipe elbow, straight pipe , structural tee, head size, radius sections , adjustable pipe , mainly used for the air force , pumping slurry pipeline and other materials . Because the transmission medium with high hardness, flow speed , flow characteristics, can effectively reduce the transmission medium to the wall to produce long-lasting impact, abrasion , corrosion fatigue causes the pipe was gradually worn out speed.
1 , the definition of wear-resistant ceramic pipe
Depending on the working conditions of wear on the wear-resistant ceramic pipe lining materials have different choices. Resistant ceramic lined pipe ( lining of aluminum oxide , silicon carbide , zirconia, silicon nitride , sialon , aluminum nitride, boron nitride , etc. ) ; resistant alloy tube ; hexsteel wearable pipe fittings ; rubber resistant steel grinding tube ; wear-resistant plastic tube ; wear-resistant cast stone pipe ; wearable self-propagating composite pipe ; rare earth alloy wear-resistant pipe.
2 , the main application of wear-resistant ceramic pipe
In addition to used in coal-fired power plants wear elbow ash , slag pipe , powder , powder tube back , desulfurization pipes , but also widely used in the following industries:
Mining : Coal industry CWS , washing mud , mine backfill , mine coal powder ;
Metal mines : concentrate and tailings transport wear elbow ;
Metallurgy : Steel mill blast of pulverized coal injection , slag and other transmission pipelines ; CAO, zinc Bei sands pipeline , transporting steel alloys, refining , etc. Preferably wear elbow ;
Cement : raw slurry wet rotary kiln production line conveyor , coal transportation, upgrading cutting machine , pneumatic conveying finished unloading cement , concrete wear elbow .
Chemical : pulverized coal pipeline , transporting raw materials such as silica fume wear elbow .
The main application sectors 3 , wear-resistant ceramic pipe
In addition to used in coal-fired power plants wear elbow ash , slag pipe , powder , powder tube back , desulfurization pipes , but also widely used in the following industries:
Mining : Coal industry CWS , washing mud , mine backfill , mine coal powder ;
Metal mines : concentrate and tailings transport wear elbow ;
Metallurgy : Steel mill blast of pulverized coal injection , slag and other transmission pipelines ; CAO, zinc Bei sands pipeline , transporting steel alloys, refining , etc. Preferably wear elbow ;
Cement : raw slurry wet rotary kiln production line conveyor , coal transportation, upgrading cutting machine , pneumatic conveying finished unloading cement , concrete wear elbow .
Chemical : pulverized coal pipeline , transporting raw materials such as silica fume wear elbow .
4, the detailed use of wear-resistant ceramic pipe
Transport has been around electricity, metallurgy, coal , petroleum, chemicals, building materials , machinery and other industries, and high-speed developing. When the wear-resistant ceramic grinding large pipeline materials (such as ash , coal , ore concentrates , tailings, cement, etc. ) , there is an abrasion resistant ceramic pipe faster , especially wear elbow faster. When the pipeline in the wear-resistant ceramic having a strong corrosive gas , liquid or solid , there is a problem of corrosion and wear-resistant ceramic pipe is quickly destroyed . When the pipeline resistant ceramic materials with higher temperatures , there is a heat-resistant steel prices are very expensive problem. After resistant ceramic pipe market, these problems are solved. Wear resistant ceramic pipes are widely used in mine backfill serious , transporting ore concentrate and tailings , coal-fired power plant feed powder , slag , ash and other wear-resistant ceramic pipes are also very suitable . Resistant ceramic pipes are transported strong corrosive acid, alkali , salt and abrasive both solid , wear-resistant ceramic pipe ideal liquid delivery . In the high-temperature corrosion resistant ceramic pipe , high temperature or high-temperature ablation wear occasions using very safe and reliable.
5 , wear-resistant ceramic pipe production technology
Resistant ceramic pipes are using self- propagating high temperature synthesis - centrifugation manufacture. After that is placed inside the centrifuge tube seamless steel mold , joined in the steel and aluminum oxide powder mixture , the mixture called thermite in chemistry , centrifuge tube mold rotation reaches a certain speed , through a Mars ignite thermite , thermite now own , the combustion wave spread rapidly , following violent chemical reaction occurs when the spread :
2Al + Fe2O3 = Al2O3 +2 Fe +836 KJ
3Fe3O4 +8 Al = 4Al2O3 +9 Fe +3265 KJ
After the thermite reaction product is stable α-Al2O3 ( ie corundum ) and iron , and release a lot of heat. As the heat under adiabatic conditions , the adiabatic temperature can reach 3753K and 3509K, it is the original material of the inner pipe and the product after the reaction , if a melting point of 2045 ℃ corundum are also all into the melt . Since the reaction is very rapid , only a few seconds , the reaction was melted under the centrifugal force , the rapid separation of the specific gravity of the size , the proportion of iron (7.85g/cm3) twice the proportion of Al2O3 (3.95g/cm3) , the heavier iron pipe wall by centrifugal force flung the lighter Al2O3 are located in the inner layer of iron . Due to the rapid heat absorption and heat pipe , Al2O3 and Fe soon reach the freezing point , layered solidification . Finally, wear-resistant ceramic pipe formed from the inside out corundum porcelain , iron -based over-layer , and an outer layer of steel , high temperature molten iron and molten liquid Al2O3 , with the pipe wall contacting the inner wall of the steel pipe in the semi- dissolved state, the formation of the iron and steel metallurgical bonding layer between the iron layer and the alumina ceramic layer also forms a solid combination , which combines compression and shear strength ( ie, when the axial strength of the ceramic laminate ) ≥ 15MPa; resistant ceramic pipe crush strength ( strength that is outside of the tube from the tube when crushed ceramic ) ≥ 350MPa;
6 , wear-resistant ceramic pipes advantages compared with conventional pipeline
Resistant ceramic pipe with conventional steel , wear-resistant alloy steel pipe, cast stone and plastic pipe , steel pipe and other rubber has the essential difference. Seamless steel pipe is resistant ceramic layer , the inner layer is corundum. Corundum layer hardness up HV1100-1400, equivalent to cobalt tungsten carbide, high wear resistance than carbon steel pipe more than 20 times . Abrasion resistant ceramic pipe corundum rely mainly on the inner layer of a few millimeters thick , which is wear-resistant alloy steel pipe than , cast by both the composition and organization of the tube , and by the thickness of wear has been a qualitative leap.
Resistant ceramic pipes quickly occupied the market , in addition to high quality , good performance , but also that it 's cost-effective than other wear and corrosion resistant pipe. In resistant ceramic pipe of the same size and unit length , the wear-resistant ceramic pipe weighs only half wear-resistant alloy steel tube about its construction cost per meter by 20% -30 % ; Only three cast stone pipe weight one minute, reduce the construction cost per meter by 5% -10 % ; resistant ceramic pipe corrosion or high temperature applications in use , and its price is only stainless steel pipe , a fraction of the nickel-titanium tubes.
1 , the definition of wear-resistant ceramic pipe
Depending on the working conditions of wear on the wear-resistant ceramic pipe lining materials have different choices. Resistant ceramic lined pipe ( lining of aluminum oxide , silicon carbide , zirconia, silicon nitride , sialon , aluminum nitride, boron nitride , etc. ) ; resistant alloy tube ; hexsteel wearable pipe fittings ; rubber resistant steel grinding tube ; wear-resistant plastic tube ; wear-resistant cast stone pipe ; wearable self-propagating composite pipe ; rare earth alloy wear-resistant pipe.
2 , the main application of wear-resistant ceramic pipe
In addition to used in coal-fired power plants wear elbow ash , slag pipe , powder , powder tube back , desulfurization pipes , but also widely used in the following industries:
Mining : Coal industry CWS , washing mud , mine backfill , mine coal powder ;
Metal mines : concentrate and tailings transport wear elbow ;
Metallurgy : Steel mill blast of pulverized coal injection , slag and other transmission pipelines ; CAO, zinc Bei sands pipeline , transporting steel alloys, refining , etc. Preferably wear elbow ;
Cement : raw slurry wet rotary kiln production line conveyor , coal transportation, upgrading cutting machine , pneumatic conveying finished unloading cement , concrete wear elbow .
Chemical : pulverized coal pipeline , transporting raw materials such as silica fume wear elbow .
The main application sectors 3 , wear-resistant ceramic pipe
In addition to used in coal-fired power plants wear elbow ash , slag pipe , powder , powder tube back , desulfurization pipes , but also widely used in the following industries:
Mining : Coal industry CWS , washing mud , mine backfill , mine coal powder ;
Metal mines : concentrate and tailings transport wear elbow ;
Metallurgy : Steel mill blast of pulverized coal injection , slag and other transmission pipelines ; CAO, zinc Bei sands pipeline , transporting steel alloys, refining , etc. Preferably wear elbow ;
Cement : raw slurry wet rotary kiln production line conveyor , coal transportation, upgrading cutting machine , pneumatic conveying finished unloading cement , concrete wear elbow .
Chemical : pulverized coal pipeline , transporting raw materials such as silica fume wear elbow .
4, the detailed use of wear-resistant ceramic pipe
Transport has been around electricity, metallurgy, coal , petroleum, chemicals, building materials , machinery and other industries, and high-speed developing. When the wear-resistant ceramic grinding large pipeline materials (such as ash , coal , ore concentrates , tailings, cement, etc. ) , there is an abrasion resistant ceramic pipe faster , especially wear elbow faster. When the pipeline in the wear-resistant ceramic having a strong corrosive gas , liquid or solid , there is a problem of corrosion and wear-resistant ceramic pipe is quickly destroyed . When the pipeline resistant ceramic materials with higher temperatures , there is a heat-resistant steel prices are very expensive problem. After resistant ceramic pipe market, these problems are solved. Wear resistant ceramic pipes are widely used in mine backfill serious , transporting ore concentrate and tailings , coal-fired power plant feed powder , slag , ash and other wear-resistant ceramic pipes are also very suitable . Resistant ceramic pipes are transported strong corrosive acid, alkali , salt and abrasive both solid , wear-resistant ceramic pipe ideal liquid delivery . In the high-temperature corrosion resistant ceramic pipe , high temperature or high-temperature ablation wear occasions using very safe and reliable.
5 , wear-resistant ceramic pipe production technology
Resistant ceramic pipes are using self- propagating high temperature synthesis - centrifugation manufacture. After that is placed inside the centrifuge tube seamless steel mold , joined in the steel and aluminum oxide powder mixture , the mixture called thermite in chemistry , centrifuge tube mold rotation reaches a certain speed , through a Mars ignite thermite , thermite now own , the combustion wave spread rapidly , following violent chemical reaction occurs when the spread :
2Al + Fe2O3 = Al2O3 +2 Fe +836 KJ
3Fe3O4 +8 Al = 4Al2O3 +9 Fe +3265 KJ
After the thermite reaction product is stable α-Al2O3 ( ie corundum ) and iron , and release a lot of heat. As the heat under adiabatic conditions , the adiabatic temperature can reach 3753K and 3509K, it is the original material of the inner pipe and the product after the reaction , if a melting point of 2045 ℃ corundum are also all into the melt . Since the reaction is very rapid , only a few seconds , the reaction was melted under the centrifugal force , the rapid separation of the specific gravity of the size , the proportion of iron (7.85g/cm3) twice the proportion of Al2O3 (3.95g/cm3) , the heavier iron pipe wall by centrifugal force flung the lighter Al2O3 are located in the inner layer of iron . Due to the rapid heat absorption and heat pipe , Al2O3 and Fe soon reach the freezing point , layered solidification . Finally, wear-resistant ceramic pipe formed from the inside out corundum porcelain , iron -based over-layer , and an outer layer of steel , high temperature molten iron and molten liquid Al2O3 , with the pipe wall contacting the inner wall of the steel pipe in the semi- dissolved state, the formation of the iron and steel metallurgical bonding layer between the iron layer and the alumina ceramic layer also forms a solid combination , which combines compression and shear strength ( ie, when the axial strength of the ceramic laminate ) ≥ 15MPa; resistant ceramic pipe crush strength ( strength that is outside of the tube from the tube when crushed ceramic ) ≥ 350MPa;
6 , wear-resistant ceramic pipes advantages compared with conventional pipeline
Resistant ceramic pipe with conventional steel , wear-resistant alloy steel pipe, cast stone and plastic pipe , steel pipe and other rubber has the essential difference. Seamless steel pipe is resistant ceramic layer , the inner layer is corundum. Corundum layer hardness up HV1100-1400, equivalent to cobalt tungsten carbide, high wear resistance than carbon steel pipe more than 20 times . Abrasion resistant ceramic pipe corundum rely mainly on the inner layer of a few millimeters thick , which is wear-resistant alloy steel pipe than , cast by both the composition and organization of the tube , and by the thickness of wear has been a qualitative leap.
Resistant ceramic pipes quickly occupied the market , in addition to high quality , good performance , but also that it 's cost-effective than other wear and corrosion resistant pipe. In resistant ceramic pipe of the same size and unit length , the wear-resistant ceramic pipe weighs only half wear-resistant alloy steel tube about its construction cost per meter by 20% -30 % ; Only three cast stone pipe weight one minute, reduce the construction cost per meter by 5% -10 % ; resistant ceramic pipe corrosion or high temperature applications in use , and its price is only stainless steel pipe , a fraction of the nickel-titanium tubes.
