第1个回答 2009-06-08
专业词汇挺多的。
With the development of continuous casting technology, skateboard as one continuous refractory with more demanding, the conditions of use and the performance requirements of more and more is also high, especially its thermal shock stability and slag corrosion. Carbon refractories is the biggest weakness of carbon materials, the damage caused by oxidation in order to prevent carbon under high temperature oxidation and improve refractory mechanical strength, use Si, Al, such as metal and SiC, B4C of carbide as metal for additives.
When adding Si, Al, because these metal additive with carbon or air separation of N2 reaction, SiC, AlN whisker and Al4C3 plate, to make up for the crystallization of refractory material, make interior space organization, strengthen the smaller stomata and aggregate particles between aggregate particles with the matrix, thereby increasing strength. Also generated carbide, nitrides played the role of the antioxidant. Al2O3 - ZrO2 - C qualitative skateboarding is currently the process of continuous casting steel form, from the current mainstream board production craft, most Al2O3 - ZrO2 production quality, C - are introducing skateboarding a silicon metal and metal aluminium, aiming at improving the strength, and skateboard in use process, improve the skateboard oxidation resistance, and corrosion resistance.
To burn into aluminium zirconium carbon skateboarding add 2-3% can increase strength of material Al powder, and can reduce the aluminium zirconium carbon skateboard with sintering temperature, but the increase of the content of aluminum materials, reduce hydration property. Add SiO2 micro powder can improve the resistance of the material properties and can reduce the hydration temperature materials in the expansion. This topic through the change of aluminum powder content and SiO2, firing temperature and strength, erosion resistance and hydration property, the relationship between for further reduce production cost and improve the skateboard performance direction.
Keywords: additive, aluminium zirconium chemical, thermal erosion carbon skateboard, silicon whisker, SiO2
第2个回答 2009-06-08
With the continuous casting technology, skateboarding as a function of continuous casting refractories with one of the increasingly harsh conditions, its performance requirements have become more sophisticated, and in particular its stability and thermal shock resistance to slag erosion. Carbon refractories is the biggest weakness of the carbon material damage caused by oxidation, in order to prevent oxidation of carbon at high temperatures and to improve the mechanical strength of refractory materials, the use of Si, Al, such as metals and SiC, B4C, such as metal carbides as additives.
When adding Si, Al, such as additives, since these metals and carbon in the air or N2 reaction, precipitation SiC, AlN whiskers and plate Al4C3 crystallization of refractory organizations made up the gap, so that the internal pores become smaller, strengthened between the aggregate particles and the aggregate particles and the combination of matrix, so that increased strength products. At the same time generated by carbide, nitride anti-oxidation played a role. Al2O3-ZrO2-C quality skateboard is the process of continuous casting ladle slide with the mainstream, the majority from the current production process, the production of Al2O3-ZrO2-C quality skateboard when the introduction of metal silicon and a small amount of aluminum to to improve the strength of skateboards, and in the use of the process to improve the oxidation resistance of skateboards and anti-corrosive.
Sintering of zirconium to aluminum skateboards adding carbon 2-3% Al powder can increase the strength of the material, and aluminum zirconium to reduce the sintering temperature carbon skateboard, but with the Al content increases, the hydration properties of materials to reduce resistance. SiO2 powder can be added to enhance the anti-hydration properties of materials and materials to reduce the time in high-temperature expansion. This issue by changing the content of aluminum powder and SiO2 powder to study the sintering temperature and the product strength, hydration properties and anti-anti-relationship between erosion, in order to further reduce production costs and improve the performance specified in the direction of skateboarding.
Key words: additives, aluminum zirconium carbon skateboards, thermo-chemical erosion, silicon carbide whiskers, SiO2
第3个回答 2009-06-08
With the continuous casting technology, skateboarding as a function of continuous casting refractories with one of the increasingly harsh conditions, its performance requirements have become more sophisticated, and in particular its stability and thermal shock resistance to slag erosion. Carbon refractories is the biggest weakness of the carbon material damage caused by oxidation, in order to prevent oxidation of carbon at high temperatures and to improve the mechanical strength of refractory materials, the use of Si, Al, such as metals and SiC, B4C, such as metal carbides as additives.
When adding Si, Al, such as additives, since these metals and carbon in the air or N2 reaction, precipitation SiC, AlN whiskers and plate Al4C3 crystallization of refractory organizations made up the gap, so that the internal pores become smaller, strengthened between the aggregate particles and the aggregate particles and the combination of matrix, so that increased strength products. At the same time generated by carbide, nitride anti-oxidation played a role. Al2O3-ZrO2-C quality skateboard is the process of continuous casting ladle slide with the mainstream, the majority from the current production process, the production of Al2O3-ZrO2-C quality skateboard when the introduction of metal silicon and a small amount of aluminum to to improve the strength of skateboards, and in the use of the process to improve the oxidation resistance of skateboards and anti-corrosive.
Sintering of zirconium to aluminum skateboards adding carbon 2-3% Al powder can increase the strength of the material, and aluminum zirconium to reduce the sintering temperature carbon skateboard, but with the Al content increases, the hydration properties of materials to reduce resistance. SiO2 powder can be added to enhance the anti-hydration properties of materials and materials to reduce the time in high-temperature expansion. This issue by changing the content of aluminum powder and SiO2 powder to study the sintering temperature and the product strength, hydration properties and anti-anti-relationship between erosion, in order to further reduce production costs and improve the performance specified in the direction of skateboarding.
第4个回答 2009-06-08
With the continuous casting technology, skateboarding as a function of continuous casting refractories with one of the increasingly harsh conditions, its performance requirements have become more sophisticated, and in particular its stability and thermal shock resistance to slag erosion. Carbon refractories is the biggest weakness of the carbon material damage caused by oxidation, in order to prevent oxidation of carbon at high temperatures and to improve the mechanical strength of refractory materials, the use of Si, Al, such as metals and SiC, B4C, such as metal carbides as additives.
When adding Si, Al, such as additives, since these metals and carbon in the air or N2 reaction, precipitation SiC, AlN whiskers and plate Al4C3 crystallization of refractory organizations made up the gap, so that the internal pores become smaller, strengthened between the aggregate particles and the aggregate particles and the combination of matrix, so that increased strength products. At the same time generated by carbide, nitride anti-oxidation played a role. Al2O3-ZrO2-C quality skateboard is the process of continuous casting ladle slide with the mainstream, the majority from the current production process, the production of Al2O3-ZrO2-C quality skateboard when the introduction of metal silicon and a small amount of aluminum,
Aimed at increasing the strength of skateboards, and in the use of the process to improve the oxidation resistance of skateboards and anti-corrosive.
Sintering of zirconium to aluminum skateboards adding carbon 2-3% Al powder can increase the strength of the material, and aluminum zirconium to reduce the sintering temperature carbon skateboard, but with the Al content increases, the hydration properties of materials to reduce resistance. SiO2 powder can be added to enhance the anti-hydration properties of materials and materials to reduce the time in high-temperature expansion. This issue by changing the content of aluminum powder and SiO2 powder to study the sintering temperature and the product strength, hydration properties and anti-anti-relationship between erosion, in order to further reduce production costs and improve the performance specified in the direction of skateboarding.
Key words: additives, aluminum zirconium carbon skateboards, thermo-chemical erosion, silicon carbide whiskers, SiO2
有的地方不太准确，请见谅，能力有限
第5个回答 2009-06-08
Along with the continuous casting technology's development, the slide uses one of functionality fire-proof materials as the continuous casting, its exploitation conditions are getting more and more harsh, is also getting higher and higher to its performance requirement, particularly its anti-heat shock stable performance and anti-scouring. Is the carbon oxidation creates the material including the carbon fire-proof material biggest weakness the damage, to prevent the carbon to oxidize as well as to enhance the fire-proof material under the high temperature the mechanical strength, uses Si, the Al and so on metal and SiC, the B4C and so on carbide makes the metal is the chemical additive.when increases Si, the Al and so on chemical additive, because in these metals and the carbon or air N2 has the response, separates out SiC, the AlN whisker and the Al4C3 plate-type crystallization, has made up the fire-proof material organization's crevice, caused the internal blowhole changes is small, strengthened between the aggregate pellet as well as the aggregate pellet and the matrix union, thus made the product intensity to increase. Simultaneously produces the carbide, the nitride played the oxidation resistance role. The Al2O3-ZrO2-C nature slide is in present continuous casting process the hot metal ladle with the mainstream slide, looking from the present majority technique of production, when produces the Al2O3-ZrO2-C nature slide, introduces the metallic silicon and the few metal aluminum, is for the purpose of enhancing slide's intensity, with in the use process, improves slide's oxidation resistance and the resistance to fouling. to fires in the aluminum zirconium carbon slide to join the 2-3%Al powder to be able to enhance the material strength, and can reduce the aluminum zirconium carbon slide's firing temperature, but along with aluminum content's increase, the material anti-hydration performance reduces. Increases the SiO2 fine powder to be possible to enhance the material the anti-hydrated performance, and can reduce the material in high temperature time inflation. This topic through the change aluminite powder and the SiO2 fine powder content, between the research firing temperature and the product intensity, the anti-hydrated performance and the resistance to fouling relations, to further reduce the production cost and enhance the slide performance to indicate the direction.