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introduction： Mix the fuel and air properly﹐A device for stabilizing the ignition and complete combustion of fuel。The burner is used to burn pulverized coal﹑Liquid fuel and gas fuel boilers and industrial furnaces。Small coal-fired boilers generally use layer firing﹐No burner required。Burners can be divided into pulverized coal burners according to the different fuels burned﹑Oil burner and gas burner3class。 Pulverized coal burner There are two kinds: swirl and direct flow。 Swirl pulverized coal burner﹕Mainly by a wind cyclone﹑Secondary air conditioning damper(Swirl blade or volute)Imari﹑Secondary air nozzle composition(figure1 Swirling type
2015-01-12 Reading quantity 2803
introduction： 20Since the century﹐The annual output of cars in the world is several thousand﹑Tens of thousands of them﹐Tens of millions of cars later﹐to1978The year has reached4249Around 10,000 units。The automobile industry has become the worlds largest manufacturing industry。80age﹐In the world20One of the largest industrial enterprises6One is a car manufacturing company。1980years﹐The number of cars in the world is about3.35Hundred million vehicles﹐Where the car is2.65Hundred million vehicles﹐Freight cars and buses for7000Ten thousand units。Production and use of automobiles﹐It covers a wide range of areas。70age﹐In the world20Many of the largest car companies have employees500Thousands of people﹐With cars
2015-01-12 Reading quantity 2814
introduction： 1：What kinds of hammers are commonly used by riveters？ a：Hand hammer，Sledge hammer，Shaped hammer。 2：What kinds of chisels are commonly used by riveters？ a：There are two kinds of flat chisel and narrow chisel。 3：What is steel？ a：Carbon content is less than2.11The iron carbon alloy is called steel。 4：What is high carbon steel？ a：Carbon content is greater than0.6The steel is called high carbon steel。 5：Steel can be divided into several types according to its use？ a：Can be divided into structural steel，Tool steel and special purpose steel。
2015-01-12 Reading quantity 2899
introduction：In use“Derived sketch”Command time，Sometimes the resulting sketch goes in the opposite direction，What should I do?？Sometimes it is necessary to establish a directional text feature on a specified plane，What should I do?？This is where you need to use it“Revise a sketch”. The following example shows you how to do reverse text. 1.Select a face，sketch，Use the Type Tool to write，The writing must be positive at this time。As shown in the figure1。 2。Use“Revise a sketch”command，Move the mouse to the diagram2Shown on the box，Right click!!!!。You can make the sketch vertical
2015-01-12 Reading quantity 2795
introduction：PCS Pieces a(The root,Block scheduling) PRS Pairs double(On an equal footing) CTN Carton Cartoon box PAL Pallet/skid pallet PO Purchasing Order Purchase order MO Manufacture Order Production order D/C Date Code Production date code ID/C Identification Code (supplier)Identification code SWR Special
2015-01-12 Reading quantity 2910
introduction： The clutch pedal is familiar to those who have a car，What does the clutch pedal do？Now lets take a look。The clutch pedal has three functions。One is to achieve smooth shift，The second is to ensure that the car starts smoothly，The third is to prevent transmission overload。How does that work。 Achieving a smooth shift is when the car is in motion，To adapt to constantly changing driving conditions，The transmission system often has to be changed to work in different gears，The shift of a gear transmission is generally achieved by flipping gears or other gear shifting mechanisms，Push out a gear pair in the original gear position，Make another one
2015-01-12 Reading quantity 2800
introduction： one、 Scrap ferrous metal 1、Pig iron Pig iron is divided into casting pig iron and steelmaking pig iron，Nodular cast iron with pig iron three categories，It belongs to raw materials of steel products。 2、ferroalloy Ferroalloy is an alloy of non-metallic or metallic elements with iron。Depending on the type of element，Split into ferrosilicon，ferromanganese，ferrochrome，ferrotungsten，ferromolybdenum。Ferroalloys also include two black pure metals two、 Scrap non-ferrous metal 1、Non-ferrous pure metal copper：Pure copper is also known as red copper，The density is...8.94g/cm3,Melting point is1083The degree of,nonmagnetic.Has good electrical conductivity,Thermal conductivity and corrosion resistance
2015-01-12 Reading quantity 2898
introduction：timkenbearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]The raceway sound and its control method the raceway sound is when the one-way bearing is running，A smooth continuous sound made by its rolling body rolling on the raceway surface，It is a basic sound unique to all rolling bearings。General imported bearings[Imported bearing:Simply say the inlet shaft
2015-01-12 Reading quantity 1464
introduction：A moving ring filter is used as the filter medium﹐And a continuous filter with negative pressure as the filter driving force。figure1 Belt vacuum filter The structure and working principle of belt vacuum filter。The horizontal filter belt is driven by a roller﹐Vacuum trays and pipes are installed under the filter belt﹐To suck out filtrate and lotion。Add a suspension at one end of the filter﹐First, the liquid is filtered to form a filter residue﹐The filter residue is then washed and dehydrated﹐Unload the slag at the other end of the filter﹐The lower part of the filter is cleaned and regenerated upon return。Before vacuum filtration﹐Sometimes a gravity settling zone is added﹐The coarser particles settle on the filter surface first﹐elixir。Some filters press the roller at the end of the slag discharge
2015-01-12 Reading quantity 2839
introduction：A plate gauge with a precise measuring plane（See picture[Service plate]）。The plate is divided into four stages according to accuracy：0、1、2and3level。among0、1and 2The graded plate is often used to check the flatness error of the workpiece by the coloring method、The straightness error of the workpiece is checked by the light gap method or the indicator method，Its measuring plane is often used as the positioning plane in the measurement work。 3Grade plate is generally used by fitters for marking。Flat plates are often made of high-quality cast iron，Its also made of granite。Granite slab is characterized by stable material，Low coefficient of thermal expansion and easy maintenance，However, it is not suitable for use in an environment with high humidity。Small size plate often
2015-01-12 Reading quantity 2822
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