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introduction： 1.General requirement 1.1 Pneumatic valve specifications and categories，Shall comply with the requirements of the pipeline design document。 1.2 The model of the pneumatic valve should indicate the national standard number requirements based on。If enterprise standard，The relevant description of the model should be indicated。 1.3 Pneumatic valve working pressure，demand≥The working pressure of the pipe，Without affecting the price，The working pressure that the valve can withstand should be greater than the actual working pressure of the pipeline；Pneumatic valve closed condition on either side should be able to withstand1.1Double the valve working pressure value without leakage；With the valve open，The valve body shall bear
2015-01-14 Reading quantity 2880
introduction： Equipment maintenance，The dimensional chain principle is used to analyze the problem，It is helpful to solve the problem of position dimensional accuracy and position relation accuracy between interrelated surfaces，It is helpful to choose the appropriate repair method。 one、Definition of dimensional chain Mechanical equipment in the process of assembly or parts processing，A group of dimensions arranged sequentially between the surfaces or axes of a part，Closed form，The tolerance and limit deviation of one dimension are determined by the tolerance and limit deviation of other dimensions，Such a group of dimensions is called a dimension chain。If all the dimensions are on the same part，Its called a part dimension chain。If all feet
2015-01-14 Reading quantity 1447
introduction：With the introduction of new dairy products，Flavoured milk、Special milk、Yogurt and healthy drinks，Dairy processors use a wide variety of bottle shapes and complex containers for packaging，There are also some food companies that require unique and personalized packaging，To strengthen the attractiveness of the product in the market competition。At present，Shrink label has become a popular packaging technology。 Safe and diversified production of dairy processing equipment in the UKGrahamLabellingSystemsLimited company，Developed to be able to operate continuously、Less downtimeCaptainlabeler，Be suitable for0．5～6pint、let
2015-01-14 Reading quantity 2795
introduction：FAGbearing[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。]The intrinsic noise is still occurring even in bearings manufactured with modern processing technology，FAGbearing[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。]The noise itself is structurally determined。 The intrinsic noise can also be divided into raceway sound、There are three kinds of impact sound and rolling sound of rolling body，It is described as follows： (1)F
2015-01-14 Reading quantity 1463
introduction：one:FAGbearing[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。]Grease flow： 1. When the grease is not subjected to external force，It can hold a certain shape like a solid，That is, it does not automatically lose when it is stationary。 2. Under extremely high shear stress（High cutting speed），Greases flow like Newtonian fluids，The viscosity can remain constant，It does not change with the shear speed。 3. When subjected to a weak external force，Elastic deformation；Remove external force
2015-01-14 Reading quantity 1566
introduction：This regulation applies to the model：J1125andJ1125A Maximum die casting（Aluminium alloy）weight：2.5kilogram Number of cycles（time/Hour (s)）：50~75（J1125）40~80（J1125A） 1、Abide by《General operating rules for casting equipment》Relevant provisions。 2、Check the oil level in the tank，If the oil level is lower than the upper limit of the oil mark，Should be added clean20Machine oil。 3、Generally do not allow air fire，If air injection is necessary，Be sure to put soft bedding in the pressure shot（silky、lead），Prevent damage to equipment。 4、According to the
2015-01-14 Reading quantity 2883
introduction：Raceway noise is due to plain bearings[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。]When rotating, the rolling element rolls in the raceway and generates a smooth and continuous noise，It attracts attention only when its sound pressure level or tone is extremely high。In fact, the sound energy stimulated by raceway sound is limited，As in normal circumstances，Of high qualityIKOBearing track sound is
2015-01-14 Reading quantity 1539
introduction： The site should be cleaned before demolition，Get the tools ready，And in the connector line、End cover and housing、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。]Cover and end cover are marked，So as not to make mistakes during assembly。The general steps to remove the motor are as follows： 1、Remove belt or remove coupling pin；
2015-01-14 Reading quantity 1541
introduction：Heat treatment processes generally include heating、Keep warm、Three cooling processes，Sometimes there are only two processes: heating and cooling。These processes are interconnected，uninterruptible。 Heating is one of the important processes of heat treatment。There are many heating methods for metal heat treatment，Charcoal and coal were first used as heat sources，Liquid and gaseous fuels are then applied。The application of electricity makes heating easy to control，And no environmental pollution。These heat sources allow direct heating，It can also be made by molten salt or metal，Even the floating particles are indirectly heated。 Metal heating，The workpiece is exposed to air，Frequent oxidation、decarburization(The surface carbon of steel parts
2015-01-14 Reading quantity 1527
introduction： There are many kinds of metal materials used in mechanical parts，In order to produce、Convenient management、orderly，Related standards for different metal materials The representation of their grades is specified，To show unity and ease of adoption、Use。Now the commonly used metal material grade representation method to the reader to make some brief introduction。 one、Steel product brand representation method(Refer toGB/T221—2000) 1.Basic overview of the standard GB/T221—2000The standard refers to the foreign steel product brand representation method and the domestic steel product brand representation
2015-01-14 Reading quantity 2884
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