The autonomous engine uses action to interpret "world-class high-end power"
As the oldest diesel engine enterprise in China, FAW Jiefang Wuxi Diesel Engine Factory has developed internationally advanced engine products through continuous independent innovation and technological advancement, and interprets the creation of “world-class high-end power†with the practical actions of independent innovation. aims.
According to reports, Xichai's Aowei 11-liter engine date has created a new record of 2 million kilometers without overhaul. A group of liberation heavy trucks equipped with the Aowei 11-liter engine was purchased by Xinjiang Hetian Shuntong Transportation Co., Ltd. in 2005, and has been running on the desert road between Tazhong Oilfield and Zepu Petrochemical Plant in the Taklimakan Desert. In the past 9 years, it has experienced the test of harsh natural environment such as sand, dryness and high temperature. In the absence of overhaul, 13 vehicles have already traveled more than 2 million kilometers, and the longest has reached 2.21 million kilometers.
Wang Lizhi, assistant general manager of FAW Group, said that it is not uncommon for millions of kilometers to be overhauled in major domestic and international brands. However, it is a miracle that the Aowei engine does not overhaul more than 2 million kilometers in batches. At the same time, for the authority of 2 million kilometers without major repair records, Jinan Automobile Testing Center has tested the engine and issued a report, and determined that its internal parts are original factory parts, no major repairs, and all the accessories are The maintenance is good, the whole machine runs smoothly, and the wear is still within the normal range. In other words, the vehicles will continue to be used normally, and the Aowei engine will also create a higher mileage record without overhaul.
The origin of this quality of Xichai engine is not accidental. In recent years, FAW Xichai has continuously improved its scientific and technological innovation level and the technological innovation content of its products around the “technology-driven†strategy. It has realized the advancement of Xichai from technology-oriented to technology-leading, and formed the core technical advantages of the factory. It has obtained high-safety engine braking technology, long-life engine development technology, and high-efficiency engine section. Key scientific and technological achievements such as oil technology.
The Aowei engine is the first diesel engine in China that uses four-valve technology and overhead camshaft technology. It not only has high power and large torque, but also has high fuel efficiency and good economic performance. At the same time, the engine adopts the air brake and the compression release brake, the exhaust brake combined brake, etc., which ensures that the whole vehicle does not need to brake when it goes downhill for a long distance, ensuring the safety of the whole vehicle and the reliability of the brake system. . In 2011, the Liberation J6 Heavy Truck and Aowei Engine won the "First Prize of China Science and Technology Progress Award".
Since 2012, Xichai has completed 70 patent applications and obtained 22 patents. Among them, "diesel vehicle load intelligent identification fuel-saving control method" broke through the fuel-saving bottleneck of diesel engine control development, and built the technical advantage of Xichai electronically controlled diesel engine in fuel-saving, the device and GPS, EGR, engine brake, etc. The key technology makes Xichai the only company in the diesel industry that has the core technology in the field.
Since 2014, the market share of Aowei engine has increased rapidly. Among them, the Aowei 11-liter engine has accounted for more than 50% of the domestic engine sales. The trucks and buses that are matched with the Aowei engine are not only sold well in China, but also exported to more than 20 countries including Russia, Kazakhstan, South Africa and South America.
Natural Graphite , as its name implies, is naturally formed by natural Graphite , which is generally found in graphite schist, graphite-gneiss, graphite-bearing schist and metamorphic shale.
Features
The chemical composition of graphite is carbon (C). Naturally produced graphite is rarely pure and often contains impurities, including SiO2, Al2O3, MgO, CaO, P2O5, CuO, V2O5, H2O, S, FeO and H, N, CO2, CH4, NH3, etc. Natural graphite minerals are black, steel gray, striated black; Metallic luster, crypto, dull, opaque; The hardness is isotropic, the vertical cleavage surface is 3 ~ 5, the parallel cleavage surface is 1 ~ 2; Qualitative soft, density is 2.09 ~ 2.23 g/cm3, have the feeling of greasy, easy to contaminate finger. Mineral chip under the transmitted light is generally not transparent, extremely thin can pervious to light, the light green gray, refractive index of 1.93 ~ 2.07, under the reflected light is light gray, reflective pleochroism, Ro gray with brown, Re dark blue gray, reflectivity Ro23 (red), Re5.5 (red), the reflected color, double reflection were significantly, strong heterogeneity, polarization color for straw yellow.
Graphite is a complex six-party double cone, assumes the six-party tabular crystal, common simplex are parallel double, six-party double cone, hexagonal prism, but in good condition with rare crystal forms, the generally show scaly or platy, aggregate density lump, earthy or globular.
Type
The process performance and usage of graphite is mainly depends on the degree of crystallization, in accordance with its natural Graphite Crystal morphology can be divided into crystalline graphite, Flake Graphite ) and aphanitic graphite (earthy graphite) two types of industry.
Crystalline graphite
In the crystalline (scale) graphite ore, the diameter of graphite crystals is greater than 1 mu m. Ore grade is low, but optional; The mineral associated with graphite is usually mica, feldspar, quartz, diopathic stone, diabase, garnet and a small amount of pyrite, calcite, etc., some of which have some useful components, such as rutile and vanadium. The ore is scales, grainy scales or granulocyte structures, flaky, flaky, or blocky structures.
Crystalline (scale) graphite is divided into High Purity Graphite, High Carbon Graphite, Medium Carbon Graphite and low Carbon Graphite according to the fixed carbon content.
The high purity graphite (fixed carbon content is greater than or equal to 99.9%) is mainly used for flexible graphite sealing material, nuclear graphite, instead of platinum crucible for chemical reagent melting and lubricant base material, etc.
High carbon graphite (fixed carbon content 94.0% ~ 99.9%) is mainly used for refractory materials, lubricant substrate, brush raw materials, carbon products, battery raw materials, pencil materials, filling materials and coatings, etc.
Carbon graphite (80% ~ 94% fixed carbon content) is mainly used for crucible, refractories, casting materials, foundry coatings, pencil raw materials, battery materials and dyes, etc.
Low carbon graphite (fixed carbon content 50.0% ~ 80.0%) is mainly used for foundry coatings.
Cryptocrystalline graphite
Cryptocrystalline graphite is also called soil graphite or amorphous graphite. In cryptocrystalline graphite ore, graphite crystals are less than 1 mu m in diameter, which are microcrystalline and can only be seen in the electron microscope. High grade of ore, but poor selectable; The mineral associated with graphite is often quartz and calcite; The ore is microscaly - cryptocrystalline structure, block or soil structure.
Cryptocrystalline graphite ore is mainly distributed in contact metamorphic deposits. Actually the diameter graphite flake graphite ore is uneven, the so-called crystalline graphite ore, may also contain the aphanitic graphite, are too many content is often referred to as the mixed type graphite ore, may also contain a small amount of aphanitic graphite quality mineral crystalline flake graphite piece diameter slightly larger than 1 microns.
Cryptocrystalline graphite ore is mainly used in pencil, battery, electrode, graphite emulsion, graphite bearing ingredients and the raw materials of battery carbon rod. The non-ferrous graphite is mainly used for casting materials, refractory materials, dyes and electrode paste.
Natural Graphite
Natural Graphite,Expanded Graphite,Colloidal Graphite,Special Graphite
Fengcheng Ruixing Carbon Products Co., Ltd , http://www.lnfcrxts.com