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introduction：The method of supplementing this surface： 1、insert/pointsset/pointsoncurve/ In optionsnumberofpointsChoose bigger，The higher the quality of the filling 2、insert/freeformfeature/frompointcloud Selective upper insert
2015-02-11 Reading quantity 2950
introduction： Index for assessing spontaneous combustion of fuel oil。The spontaneous combustion of fuel has an effect on the starting performance and combustion process of diesel engine，It is an important performance index of diesel oil。To determine the spontaneous combustion of fuel，N-cetane with excellent ignition properties(C16H34)Cetane number is100,Prescribed to have extremely poor ignition performance－methylnaphthalene（C10H7CH3）Cetane number is0，Were going to add n-cetane to－Methyl naphthalene is used as a standard fuel in mixtures of different proportions。When the ignition performance of the tested fuel is equivalent to that of a certain proportion of standard fuel，The percentage by volume of cetane in this standard fuel is％when，Thats the subject
2015-02-11 Reading quantity 2839
introduction：Stainless steel definition A high alloy steel that resists corrosion in air or in chemically corrosive media，Stainless steel has a beautiful surface and good corrosion resistance，No need to go through plating and other surface treatment，And play the inherent surface properties of stainless steel,A type of steel used in many ways，Commonly known as stainless steel。Represents performance are13Chromium steel，18-Chrome-nickel steel and other high alloy steel。 From the metallographic point of view，Because stainless steel contains chromium, it forms a thin chromium film on the surface，This membrane acts as a corrosion resistance to oxygen intrusion from within the steel。 In order to maintain the inherent corrosion resistance of stainless steel
2015-02-11 Reading quantity 1630
introduction：NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]postcode 1、Internal structure C CA——Solid cage with brass CD——Tape punch holding
2015-02-11 Reading quantity 1488
introduction：The setting of injection pressure is mainly to control the oil pressure enough to push the screw to reach the set injection speed requirements。Due to the different characteristics of each plastic，The ease of flow is different，The melting temperature of the same material is different，The viscosity also changes，Different products、Mold design、Different mold temperature will change the resistance formed by the material flow，To be maintained in a variety of conditions Identical exit velocity，I have to change the injection pressure，To overcome the resistance caused by the flow of molten glue。 The injection pressure is different from the holding pressure，Injection pressure mainly affects the filling stage，Maintaining pressure affects the cooling phase。
2015-02-11 Reading quantity 2871
introduction： Working principle Access to thermal energy in a closed mezzanine（Like hot water、Low pressure steam or thermal oil），Heat is transferred to the material to be dried through the inner shell，Under the power drive，The tank rotates slowly，The materials in the tank are constantly mixed，So as to achieve the purpose of strengthening drying。 The material is in vacuum state，The drop of steam pressure makes the surface of the material water（solvent）It reached saturation and evaporated，And by the vacuum pump timely discharge recovery。Moisture inside the material（solvent）Constantly penetrating the surface、evaporation、discharge，Three processes continue，The material is dried in a very short time。 ,
2015-02-11 Reading quantity 2832
introduction：Injection molding machine is a special plastic molding machine，It takes advantage of the thermoplasticity of plastics，After being heated and melted，High pressure is applied to allow rapid flow into the mold cavity，After a period of pressure holding and cooling，Into plastic products of various shapes。 1、Working cycle of injection molding machine 1）Clamping die：Die plate fast approach fixed die plate（Inclusive slow-fast-Low speed），And make sure there are no foreign bodies，System to high pressure，Lock the template（Maintain cylinder pressure）。 2）The firing platform moved forward into position：Step forward to position（The nozzle is close to the mold）。 3）Injection molding
2015-02-11 Reading quantity 2821
introduction： Steam turbine that draws steam from the intermediate stage to the heat user。The extraction pressure is determined according to the needs of users and the requirements of product serialization，It can be adjusted within a certain range（See table[Extraction pressure adjustment range（mpa）]）。 According to the number of steam extraction，Extraction steam turbine is divided into single extraction steam and double extraction steam two kinds。The flow part of single extraction steam can be divided into two sections: high pressure and low pressure。The flow part of the double extraction steam is divided into high pressure、Middle pressure and low pressure。Each section has a separate cylinder，The unit cylinder arrangement is formed，Or several segments together in a cylinder，Constitute a single cylinder arrangement。There is a steam extraction port between sections，Some steam is extracted through this opening，The rest by one can
2015-02-11 Reading quantity 2974
introduction：INAbearing[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 structure design is reasonable and has the ability to improve the predecessors，There will be a longer ball screw bearing life。Bearings are generally made by casting、Heat treatment、turning、Grinding and assembly and other processing processes。Fairness of each processing technology、Improve ones seniority、Not being promiscuous will also affect it
2015-02-11 Reading quantity 1628
introduction：What is the reason for the lift speed of the forklift truck 1、Unidirectional throttle valve failure cargo fork can not lift the reason 2、Oil pump worn or leaking 3、Distributor safety valve spring pressure is too low or ball and seat wear 4、The clearance between the distributor lifting valve barrel and the lifting valve stem is too large 5、The clearance between the lifting cylinder and the piston is too large，Or oil seal aging、breakdown 6、Pipe or connector leakage
2015-02-11 Reading quantity 2980
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