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introduction：(1)Temperature conditions at the time of measurement The ambient temperature at the time of measurement is specified as20℃，amongINAbearing[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。]、Gauge block、The temperature of standard parts and measuring instruments must be the same，The above method of placing them on the same metal plate is the fastest way to achieve the necessary temperature balance，
2015-03-17 Reading quantity 1445
introduction：From the point of view of long life，NSKImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]The selection requirements are： (1)Choose one with high load capacityNSKImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]Type bearing selection should be
2015-03-17 Reading quantity 1511
introduction： 1、External forces applied during assembly，Do not go through the 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。]The roller or ball pass，To avoid damaging the bearing。 2、Priority is given to non-impact loading and unloading。 3、When you need to tap，Do it right。 4、For the requirement
2015-03-17 Reading quantity 1532
introduction： A heat exchanger with an inner tube in a concentric casing as a heat transfer component。Two tubes of different diameters are fitted together to form a concentric casing﹐Each section of casing is called“A short distance”﹐Chengs inner tube(Heat transfer tube)throughUV elbow﹐The short pipe of the outer pipe is connected successively in a row﹐Fixed on the bracket(In the picturea The structure of the tube heat exchanger )。Heat is transferred from one fluid to another through the inner tube wall。usual﹐Hot fluid(Afluid)top-up﹐And cold fluid(Bfluid)Its introduced from below。Both ends of the casing and the outer pipe are welded or flanged with the inner pipe。Inner pipe andUV-toggle multi-flange connection﹐Easy transfer tube
2015-03-17 Reading quantity 2770
introduction：Reducer 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。]Quick on-site repair of room wear Reducer bearing room is worn，After the problem occurs，Traditional methods are difficult to solve on site，Must rely on external repair，Long downtime required，Waste valuable production time of enterprises。And its all about repairing metal with metal，Cant change“Hard on hard
2015-03-17 Reading quantity 2782
introduction： In useFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]In the process of，Grease is very critical。If stale grease is used，Not only is it ineffective，And it will be damagedFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]。 ① Oil flow observation method Take two measuring cups，
2015-03-17 Reading quantity 1553
introduction：At present，Chinas explosion-proof electrical products are divided into national standards10Species form，But in explosion-proof appliances used in factories，The most used are flameproof type and increased safety type two forms，Intrinsically safe also has a certain amount，Other forms of explosion-proof electrical products are less used。These products are classified as follows：1The explosion-proof control box category mainly includes a lighting distribution box for controlling the lighting system and a power box for controlling the power system。Most of these products are combined in structure，At most controllable12Individual loop，The shell is mostly made of cast aluminum alloy material，There are also some welded steel plates，And a very small part
2015-03-17 Reading quantity 2871
introduction：1．Effect of alloying elements on austenitizing Austenite grains nucleate and grow at the boundary between ferrite and carbide；Dissolution of residual carbides；Homogenization of austenitic components，The process of austenite grain growth and coarsening at high temperature。The addition of alloying elements to steel has a great influence on the last three processes （1）Alloy steel containing carbide forming elements，The carbides in their tissues，It is an alloying cementite or special carbide that is more stable than cementite，therefore，Carbides are less soluble when austenitizing is heated，It requires higher temperatures and longer time。Generally speaking，The tendency of alloying elements to form carbides is stronger，its
2015-03-17 Reading quantity 1531
introduction： A steam turbine used to propel a ship。1897years﹐Parsons, UK﹐C.A.For the first time2000horse-power (1.5megawatt)Multistage reaction steam turbine installed44.5Ton boat“turbinia”nobue﹐The initial steam pressure is 1.4mpa。This steam turbine is high﹑In the﹑Low pressure3Individual cylinder﹐Respectively directly drive the propeller。The boat reached trial speed34.5section(1section＝1852/3600meter/seconds)﹐It surpassed the speed of steam-powered destroyers at the time﹐It shows the superiority of steam turbine in ship application﹐Since then, Marine steam turbines have been rapidly developed。
2015-03-17 Reading quantity 2867
introduction：1.Radial seal Commonly used radial contact seals include felt ring seals、Oil seal seal、Packing seal and sealing ring seal。Because in such sealing devices，The seal is in direct contact with the shaft or other fitting，therefore，Friction and wear are inevitable in the work，And raise the temperature，Therefore, it is generally applicable to China、Bearing under low speed operating conditions[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，To reduce the power transmission process
2015-03-17 Reading quantity 1546
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