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introduction：1General rules1.0.1In order to ensure the construction and installation quality of crane electrical equipment，Promote the progress of construction and installation technology，Ensure safe operation of equipment，Formulation of this specification。1.0.2This specification applies to rated voltage0.5kVThe following new types of cranes are installed、Electric hoist electrical device and3kVAnd the construction and acceptance of the installation works by slide connection。1.0.3Installation of crane electrical equipment，Construction shall be carried out in accordance with approved design and product technical documents。1.0.4Transportation of electrical equipment for cranes、custody，It should conform to the relevant provisions of the current national standards。When the product has special requirements，Still should meet the production
2015-01-10 Reading quantity 2816
introduction： The products selected for different measuring media and indicators are not the same，Including the practicality and economy of the product，Based on our years of application experience, we recommend the following： On-line measurement section： Hvac humidity and dew point measurement：ItalyDeltaOHMtheDO9861T，Applicable environment：Humidity measurement under HVAC and high temperature and humidity。advantage：Tape display，It can measure the air humidity in high temperature and high humidity environment。 Monitor the compressed air dew point of the output of the freeze-type dryer：GermanyCStheFA300-1，Applicable environment：pressure
2015-01-10 Reading quantity 2908
introduction：There are roughly five kinds of surface processing that can be used for stainless steel，They can be used in combination，Transform into more final products。 There are five types：Rolling surface processing、Mechanical surface machining、Chemical surface processing、Mesh surface processing and color surface processing。 There are also some special surface finishes，But no matter what kind of surface finish is specified，The following steps should be followed： ①Agree with the manufacturer on the required surface finish，Better prepare a sample，As a standard for mass production in the future。 ②Large area use（Composite board，You must ensure that the same batch of substrate or coil is used。
2015-01-10 Reading quantity 1563
introduction： So-called dynamic extrusion forming，That is, at the same station，The cold extrusion forming process with two or more operations is called double dynamic extrusion。Double dynamic extrusion forming can be based on whether the mold cavity is closed，It can be divided into two states: closed dynamic extrusion forming and non-closed dynamic extrusion forming。Better forming quality can be obtained by using closed double dynamic extrusion forming process，Therefore, it has been widely used。 figure1The comparison between the traditional pier extrusion process and the closed double dynamic extrusion process is shown。You can see by comparison，Using the traditional pier extrusion method
2015-01-10 Reading quantity 2867
introduction：Selection of input power of worm gear reducer Reliability requirements for selection of input power of worm gear reducer；Working machine torqueTWork in order to select the most suitable worm gear reducer，It is necessary to know the detailed technical characteristics of the machine driven by the gear motor，Reducers are usually based on constant torque、Designed for infrequent start-stop and room temperature conditions。 Reducers are usually based on constant torque、Designed for infrequent start-stop and room temperature conditions。Its allowable output torqueTDetermined by the following formula：one、Know motor power and speed ratio and service coefficient，The reducer torque is obtained by the following formula： Reducer torque=9550×Motor work
2015-01-10 Reading quantity 2920
introduction：one、Assembly concept Any machine is made up of many parts，A number of qualified parts are combined into parts according to the specified technical requirements，Or combine several parts and components into machine equipment，And adjusted、The process of testing to become a qualified product is called assembly。For example, a bicycle consists of dozens of parts，The front and rear wheels are the components。 Assembly is the last step in machine building，Therefore, it is the key to ensure that the machine meets the technical requirements。Assembly work is good or bad，It plays an important role in the quality of products。 two、
2015-01-10 Reading quantity 2822
introduction：IKOImported 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 generation of vibration in general，rollIKOImported 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。]It does not produce noise by itself
2015-01-10 Reading quantity 1563
introduction： sequence No. Breed name and standard number type Specification range product Lv. Screw thread allowance Mechanical properties or materials Surface treatment 1
2015-01-10 Reading quantity 2930
introduction：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。]Installation of case .Normal form Several methods for mounting bearing boxes with clasp rings and fixing plates。 Mounting bearings with positioning screws will cause deformation of the bearing jacket，Should try to avoid。 .Flange type Install flanged linear bearings[Linear bearing:Metal linear bearings are a low cost
2015-01-10 Reading quantity 1493
introduction：Current，In the field of sheet metal stamping，CNC turret punch is fast for its stamping speed、High machining precision、The mold has strong versatility、Products are flexible and diverse，Be widely used。CNC turret punch used in the mold，Because of its high precision and quality requirements，Fast stamping speed，General direct selection of domestic and foreign professional manufacturers such as the United StatesMATE（figure1）、Beijing Zhaowei、Guangzhou Qitai and other products，Its specification series is complete，Strong versatility，And can well meet the special needs of users。 After the user chooses a certain quality mold，The level of its use and maintenance，It directly affects the processing quality and quality of the workpiece
2015-01-10 Reading quantity 2913
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