c/c plate

New product of sichuan province jiangyou runsheng graphite felt Lt.Co -------stave functionally material fibers-carbon plate synopsis In the mechanical seal, the chemical industry, the monocrystalline silicon, the powder metallurgy, the fine ceramics, the photovoltaic industrial, the war industry and the aerospace domain, we inevitable have to use the high temperature vacuum oven or the high temperature heat-treatment furnace. According to statistics, the dry kiln energy consumption occupies above 70% among the nation’s, the vacuum oven’s is approximately 1/3 in the whole dry kiln energy comsumption. Nowadays, it’s so-called “low-carbon economy”very popular, that is,taking energy conservation as the primary intention economy, it’s the symbol of social civilization and progression, therefore,it’s without doubt that seeking material used in the dry kiln to fall the energy consumption in the large scale which can conserve and reduce the energy on the Earth has the inestimable function. But one minimum request is that material is high melting-piont material because the dry kiln often is in the severe high temperature environment, the other conditon is easy to obtain,the reserves big and low price. Among the 104 elements on the earth,Compared to high melting-point tungsten(W) and molybdenum(Mo), the carbon’s melting point is highest,amounts to 3750°C, furthermore, is ubiquitous and easy to obtain and greatly moderately-priced.while W and Mo are rare,melting-point is 3410°C and 2622°C, the price is high. therefore, carbon is sure to be material that used in the high temperature vacuum oven to conserve energy and reduce consumption. 1. the historical evolution of the energy conservation material used in high temperature vacuum oven in ChinaOn the century 70's, as a result of the war industry need, our country developed the PAN based carbon felt, this product is fixed in the stove by the graphite support, because processing temperature is about 1000°C or so, when the application temperature is higher than this point, the massive virulent gas is to volatilize, Based on environmental protection consideration, European and American and the North America country transferred to produce the pectic fibers based carbon felt . our country has also carried on this field, but catalyzed technology is not grasped, carbon accrual low、production cost higher than the PAN based carbon felt greatly, therefore, except the aerospace domain which the resistance ablation request is very high ,the pectic fibers based carbon felt went into hiding in civil domain. In 80's, as a result of the catalyzed technology gradually maturing, the environmental protection call high, the pitch fibers based carbon felt was in selling well in Europe. At present,regardless of the enterprise or the scientific research institute this topic is rarely researched. In order to give dual attention to the environmental protection and the cost element, Our country Enterprises prosess PAN based carbon felt to 1800°C, even 2000°C to eliminate the noxious gas . At present, PAN based carbon felt is still domained in domestic market, regardless of the pectic fibers based or the PAN based carbon felt’s ductile felting , besides heat insulation effect good, its shortcoming more and more is also noticeable, that is the carbon dust is greatly easy to pollute the product, the service life is short, user’s product cost increasing, moreover, installation with difficulty in the stove. here, soft felt is regarded as the first generation product. At the beginning of the 90's,there was stiff felting in chinese market, that is ,ductile felting was hardened as plate and tube, the manufacture of the Japanese Wu feather chemical industry and German Seger company, because at that time the selling price reached as high as 1500 Yuan /kg, some domestic enterprise followed up which were engaged in the ductile felting production, because producing stiff felting craft was still not grasped, domestic producer’s stiff felting product density was about 0.22-0.39g/cm3，the heat insulation effect was bad, used in the gap vacuum oven, thermal cumulation increased as three times compared to ductile felting, the service life was increased, but thermodynamic peculiarity which is key to energy conservation and reductin consumption was at a discount. Even if the stiff felting products was produced by Japanese Wu Yu and German Seger company, which density was 0.13-0.16g/cm3, its’thermal conductivity was still higher than ductile felting’s. the pitch fibers based stiff felting which was produced by Japanese Wu Yu chemical industry had the dregs phenomenon in the oven ,furthermore, the question of protection carbon dust was still not solved. This is the second generation of product present situation.2. the characteristic of the third generation product used in the high temperature vacuum oven Whether the merit of ductil felting’s thermal conductivity low and the stiff felting service life long, dustproof, easy to install are connected, producing the third generation product used in the high temperature vacuum oven ,this is a goal which our company innovation has to achieve. In 2009 ,the company grasped the gap of the financial crisis period in which order reduced, reassignsed the crack troops , under the help of 16 cooperation units in the nation, developed the UT system, its technological process is: PAN based high temperature felting pieces after being processed by 1800°C，vacuum impregnation and high temperature and high-pressured formation in the UT stove. Then ,through the second high temperature treatment, the board is obtained which surface density is 0.8g/cm3, the internal density is 0.12g/cm3, the average density is 0.16g/cm3, the interior is still maintained the ductile felting’s loose soft characteristic, and the whole is also strong straight ,thickness is 0.02m-0.2m, because the surface density is big, achieving the smooth、dustlessness and bear the washout, the service life long; Because its’ interior still has the ductile felting thermal conductivity low characteristic, the heat insulation effect is outstanding, because of average density 0.15-0.16g/cm3, thermal conductivity is quite to Japanese product. At present,it’s difficult to measure the high temperature(1400 °C～2000°C) thermal conductivity in China. In order to examine the thermodynamic prculiartiy ,our company replaces the ductile felting of 1# high-temperature stove for re-equipping the new product, its electrical energy consumption is quite to ductile felting lining, and the service life increases to 70 stoves from the past 30 stoves , still used continuously, after inspection ,did not have any change. Afterwards, the company also re-equips the 2# high-temperature furnace for the new product. Because UT develops successfully, in 2010, the first quarter, the company received two big orders one after another, the company’s first quarter sale income and the profits and taxes surpassed the whole year’s of 2009 year; At present, the company has declared country invention patent to the patent organization as the company’s proprietary intellectual property rights. According to the characteristics of new product,we named it as stave functionally material fibers-carbon palte; And from the company angle, it is defined as the third generation material product which is used in high temperature vacuum oven .