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introduction：A cylindrical combustion chamber that uses a high-speed rotating air flow to make coal particles rotate at a high speed and burn strongly（furnace）。Cyclone furnaces can be used for boilers and other equipment。The high-speed rotating action of the air stream throws the coal particles towards the wall of the cylinder，The coal particles burn in the space near the wall and the wall of the cylinder，Forming a very hot zone，The ash melts and sticks to the wall of the cylinder。There is a high relative velocity between the air flow and the coal particles adhering to the liquid slag film，Encourage the fuel to mix well with the air，Therefore, the cyclone furnace has a high combustion intensity。 Cyclone furnace according to the structure can be divided into horizontal and vertical two kinds。①Horizontal cyclone furnace:The horizontal cyclone furnace for axial coal intake（figure1[horizontal
2015-01-24 Reading quantity 2791
introduction：(1)Rolling bearings with low noise requirements[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。] In the standard bearings produced in our country，Some single-row radial ball bearings and short cylindrical roller bearings have low noise varieties for motor bearings。Which ball bearing from inside diameterφ2.5mmtoφ60mmThere are several varieties of beltsZl、Z2
2015-01-24 Reading quantity 1654
introduction： back shaft Supporting shaft blank determination Embryo development bottom slide press Underdrive press board drop hammer Board drop hammer brake Brake (a vehicle) buckle Stripped surface camlachie cramp Casting ladle casting on flat us chamotte sand Chamotte sand charging hopper Charging funnel c
2015-01-24 Reading quantity 2794
introduction： Quality control of forgings Rotor is a key part of power plant equipment，Require safe operation at high speeds，Subjected to complex high stress，The technical requirements are very strict。However, due to metallurgical factors affecting the quality，Thermodynamic factors are difficult to control perfectly，So there are many defects.，There are mainly：Large or dense nonmetallic inclusions，Residual shrink、White spot、loosen、Cracks and mechanical properties are not qualified。 Turbo generator rotor forging，In production, most of them are scrapped because of unqualified ultrasonic inspection。Such as，Introduced in12MWRotor forging，In ultrasonic inspection
2015-01-24 Reading quantity 2793
introduction：Slave bearing[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。]Middle of upper seat and outside of bearing seat（Facing roll head）The grease injected in the mill cannot enter the rolling mill bearing well，And easy to lose，It causes the working surface of the bearing to be in a state of oil depletion when the rolling mill is working，Lead to early bearing failure。 For this purpose，The oil circuit of bearing seat has been improved，Inside the bearing seat
2015-01-24 Reading quantity 1552
introduction：shentan carburizing carburizing The steel workpiece is heated to high temperature in a carbon-containing medium，Chemical heat treatment process to increase the carbon content of the workpiece surface。The material of carburizing workpiece is generally low carbon steel or low carbon alloy steel（Carbon content is less than0.25％）。post-carburizing，The chemical composition of the surface of the steel can be close to high carbon steel。The workpiece is also quenched after carburizing，To obtain a high surface hardness、High wear resistance and fatigue strength，And keep the heart has the strength and toughness of low carbon steel after quenching，Enable the workpiece to withstand the impact load。Carburizing process is widely used in aircraft、Cars and tractors and other machinery zero
2015-01-24 Reading quantity 2817
introduction： To create an offset section，Must pass in“Sketch plotter”Sketched to define the cut outline。then，Project this outline perpendicular to the sketched plane。Click or“view”(View)>“View manager”(View Manager)。“View manager”(View Manager) Dialog box opens。Click“section”(Xsec)。Click“new”(New)。A default profile name appears。According to the ENTER key。“Section creation”(XSEC CREATE) Menu open。Click“skew”(
2015-01-24 Reading quantity 2810
introduction： 1 Reverse engineering Nowadays reverse engineering is more and more widely used in the process of product industrial design。Reverse engineering is a kind of starting from the point data obtained from the surface of the model object，A technique that enables us to generate a physical substitute for an existing model in a computer。In fact，Many designers are keen to model their goals manually，On the one hand, the goal is to show the shape of their conceptual design in a more realistic way；On the other hand，In order to evaluate whether the actual size of the model can achieve the required performance。Once its final shape is determined，For the smooth realization of product design process and production plan
2015-01-24 Reading quantity 2878
introduction： One has masteredCAD、CAMTechnical manufacturer，Industry is concerned about whether the stamping parts can be formed，Whether the product quality is qualified。Due to the complexity of the geometry of the stamping parts，It is difficult to estimate the formability of sheet metal in the process of stamping，The correctness of mold design is often unpredictable。When the problem is exposed after the mold processing，It will cause great difficulty for mold debugging，Even the entire design was scrapped。 To solve this problem，Jilin University body and tool engineering institute1985Since these years，In stamping parts of the analysis of computer simulation and mold design and manufacturing for a long time、In-depth and meticulous
2015-01-24 Reading quantity 2793
introduction：Determination of cutting parameters in NC machining The principle of reasonable selection of cutting parameters is，Roughing time，Generally, it is mainly to improve productivity，But economic and processing costs should also be considered；Semi-finishing and finishing，Under the premise of ensuring the quality of processing，Balance cutting efficiency、Economics and processing costs。The specific value should be according to the machine manual、Cutting data manual，And based on experience。 ⑴Depth of cuttingt。in-machine、Workpiece and tool stiffness allowed，tIts equal to the processing allowance，This is an effective measure to increase productivity。In order to ensure the machining accuracy and surface roughness of the parts，You should always leave some margin
2015-01-24 Reading quantity 2798
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