Pottery and porcelain is numerous material a medium mysterious special and familial, its member included the pottery and porcelain from the tradition (for example crockery, fireproof material) reach until mix now in fittings of electronic equipment, aviation the project pottery and porcelain that uses in cut tool (for example alumina, nitrogen changes silicon) . 80 time are opposite 20 centuries use advanced ceramics data (make engine completely with pottery and porcelain for example) beyond the mark apply colours to a drawing has been proved to be to cannot be taken greatly, but can say for certain, pottery and porcelain has made very important project material. When pottery and porcelain and other data (it is metallic stuff commonly) when join, when once had decided proper joint design,reaching join technology, pottery and porcelain will provide add function to the component and improve its to use property. Pottery and porcelain of material of pottery and porcelain is very solid ion / covalent union (stronger than metallic key) , this kind of union makes pottery and porcelain has relevant character: Tall hardness, high pressure shrinks intensity, low heat conduction, conductivity and chemistry are dead quality. This kind of sturdy band also showed its a few bad character: For example low extensibility and low tensile strength. However, the character with more extensive pottery and porcelain was not realised. For example, we think pottery and porcelain is report commonly / hot dielectric, and oxide of pottery and porcelain (it is with Y-Ba-Cu-O base) have sex of high temperature superconduction however. Beryllium of diamond, oxidation and carborundum compare aluminium or copper is having taller thermal conductivity. Control microstructure can overcome its inherent inelasticity to produce a bedspring of pottery and porcelain. Already the pottery and porcelain of put into production is compound content, its rupture the half that tenacity can amount to steel. Project pottery and porcelain has oxide, nitride and carbide by its bases classification. The general character of the major pottery and porcelain that applies before gives out in the watch. Oxide alumina (Al2O3) with zirconia (ZrO2) the pottery and porcelain of engineering degree oxide that is most wide application, and the gross tonnage that applies and value, alumina is the data of pottery and porcelain that uses the most extensively. The nitride with main in modern project pottery and porcelain nitride is nitrogen changes silicon (Si3N4) melt aluminium with nitrogen (AlN) . This kind of material has all sorts of level and kind, especially the nitride of each level is having specific quality. Carbide although carborundum (SiC) as pottery and porcelain of a kind of project its tenacity changes silicon than a few nitrogen low, but because have tall hot conductibility, tall corrosion resistance and tall hardness and be applied widely. Carbonization is boracic (B4C) the hardness in industrial data is ranked the 3rd (be next to diamond and cubic nitrogen to change boron) , use at needing the part of tall wear-resisting function. Be like,complex matter pottery and porcelain can regard radical of pottery and porcelain as complex matter system GRP (glass reinforced plastics) with metallic matrix complex matter is like the aluminium that adds alumina aggrandizement (Al/Al2O3) intensifier. Material of contemporary pottery and porcelain also can use the matrix data that makes compound thing. What apply the most extensively at present is the material of pottery and porcelain that is matrix with carborundum and carbon. Normal > join Normal > pottery and porcelain and pottery and porcelain and pottery and porcelain and different material has a lot of feasible technologies, these technologies include to use machine join and direct link. The graph gave out the general situation of technology of join of pottery and porcelain. Normal > makes a specific component use why to plant the technology depends on a lot of elements, include: Normal > ● needs, for example intensity, insulating property or wearability Normal > ● and Normal LINE-HEIGHT of temperature of job of 125%"> ● : Normal > ● : The connection that 125%"> ● asks to achieve is close sexual Normal > ● spare parts designs Normal LINE-HEIGHT of price of 125%"> ● : 125%"> although all these notes all should consider, but generally speaking, the temperature that two main factors are connective material and its place requirement bears the similar sex of ability. Graph 2 listed method of a few join bears the limits of temperature. Normal > joins with the metal when pottery and porcelain, need makes an interface between join material. Normally the interface must accord with the following requirement: Normal > ● heats up Normal > ● links a type, namely ionic / covalent Normal > ● and metal matchs Normal > applies Normal > photograph is plastic to be being mixed at the metal, the hardness of pottery and porcelain is tall, not combustible, dead. Because this pottery and porcelain can be used in the environment of sex of high temperature, caustic strong, tall attrition. The avery kind of that wants to consider industrial pottery and porcelain integratedly when application is characteristic, include: Normal MARGIN-LEFT of all sorts of physics property below condition of 125%"> ● high temperature: 11. 25pt; LINE-HEIGHT: The coefficient of friction with 125%"> low ● (be in especially heavy load, low lubricant requirement) Normal > ● is low Normal > ● corrosion resistance Normal > ● heats up insulating properties Normal > ● insulating property Normal LINE-HEIGHT of 125%"> ● low density: Pottery and porcelain of sectional application project makes a lot of industry of 125%"> component, the pottery and porcelain that includes electronic unit base piece (graph 3) , the rotor of turbine supercharger (graph 4) with the tappet head in car engine. The other case that contemporary pottery and porcelain uses has: Food machines what use in equipment to not have oil-lubricated the equipment such as tool of club of fuel of lamina of turbine of bearing, aviation, nucleus, small qualitative armor plate, cut, abrasive, hot clapboard and forge and kiln furnace. Normal LINE-HEIGHT of 125%"> brief summary: When 125%"> should choose a kind of material to make specific component, answer to consider the usability that is expected by select material and applicability carefully. If want to choose material of pottery and porcelain, ought to consider " accord with use principle " include: ● work environment, Normal > ● can foreknow is normal circumstance, include machinery collision, fast heat reach cooling Normal > ● designs, stuff of pottery and porcelain is right the circumstance of sectional mutation (breach, aperture, edges and corners) more sensitive Normal > ● joins, the action of contact, the working requirement of contact, function asks and comfortable the join technology Normal > ● , what all material choices and component design no less than is same, the production skill that the price of raw material and origin and place require needs fibrous root gives one individual character to be able to satisfy the component with requirement, competitive price according to can be being made such principle will try to consider. Prospective development comes from the treatment that improves data probably to make a technology, in order to reduce component cost and improvement function, and the requirement that raises higher level to high-powered data needs to use more pottery and porcelain. Although expect hard to new material, but the improvement of existing material can foreknow. Composite material may become radical of pottery and porcelain the mainest development field. Although pass,raise processing technique will ameliorable show some to be with carborundum base composite material reduces air hole, but it is with oxide base the development of high temperature composite material is in before long offer a kind of adaptability possibly in the future wider the data system that can contend to it. Before long we can see these composite material grow to make larger contribution with technical development to industry. Normal Align=center> Normal LINE-HEIGHT of Center" Align=center> pottery and porcelain: 125%; TEXT-ALIGN: Normal Align=center> melting point: 125%; TEXT-ALIGN: Center" Align=center> (OC) Normal LINE-HEIGHT of Center" Align=center> density: 125%; TEXT-ALIGN: Center" Align=center> (G/cm3) Normal LINE-HEIGHT of Center" Align=center> intensity: 125%; TEXT-ALIGN: Center" Align=center> (MPa) Normal Align=center> heats up coefficient of expansion (× 10-6/oC) Normal LINE-HEIGHT of Center" Align=center> thermal conductivity: 125%; TEXT-ALIGN: Center" Align=center> (W/m.
K) Normal Align=center> stretch coefficient (GPa) Normal Align=center>Beo Normal Align=center>2530 Normal Align=center>3.
1 Normal Align=center>246 Normal Align=center>7.
4 Normal Align=center>210 Normal Align=center>400 Normal Align=center>Al2O3 Normal Align=center>2050 Normal Align=center>4.
0 Normal Align=center>455 Normal Align=center>8.
0 Normal Align=center>40 Normal Align=center>380 Normal Align=center>ZrO2 Normal Align=center>2700 Normal Align=center>5.
6 Normal Align=center>175 Normal Align=center>10.
5 Normal Align=center>19 Normal Align=center>140 Normal Align=center>AlN Normal Align=center>1900 Normal Align=center>3.
3 Normal Align=center>441 Normal Align=center>4.
4 Normal Align=center>180 Normal Align=center>320 Normal Align=center>Si3N4 Normal Align=center>1900 Normal Align=center>3.
2 Normal Align=center>210 Normal Align=center>3.
0 Normal Align=center>17 Normal Align=center>175 Normal Align=center>B4C Normal Align=center>2350 Normal Align=center>2.
5 Normal Align=center>350 Normal Align=center>4.
3 Normal Align=center>25 Normal Align=center>450 Normal Align=center>SiC Normal Align=center>2700 Normal Align=center>3.
2 Normal Align=center>140 Normal Align=center>4.
3 Normal Align=center>50 Normal Align=center>210 Normal Align=center>WC Normal Align=center>2377 Normal Align=center>15.
8 Normal Align=center>600 Normal Align=center>5.
2 Normal Align=center>- Normal Align=center>700 Normal Align=center>Diamond Normal Align=center>3000 Normal Align=center>3.
5 Normal Align=center>1500 Normal Align=center>0.
5 Normal Align=center>2000 Normal Style="LINE-HEIGHT: 125%; TEXT-ALIGN: Center" Align=center>500 </DIV> CNC Milling
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