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introduction： Melt deposition manufacturing 〔 FDM-Fused Deposition Modeling〕Also known as material selective coating、Melt extrusion molding（MEM-Melted Extrusion Molding ）Or referred to as fusion molding。The main research of this process areStratasys Company sumMed ModelerThe company also uses this technology in the United StatesStratasysThe product manufacturing system developed by the company is the most widely used。 1）Working principle Filamentary profile
2015-03-25 Reading quantity 2821
introduction：MaschinenfabrikReinhausenFirm pairCNCThe machining tool library is optimized。Tool preparation、Knife library intelligent replacement andCNCA large amount of graphic information on the Internet became the focus of innovation efforts。 figure1MaschinenfabrikReinhausenThe companys annual30Machine on the machine about machining800Ten thousand parts，For this purpose approximately9000Different speciesNCroutine MaschinenfabrikReinhause
2015-03-25 Reading quantity 2956
introduction：1.Cleaning process The surface of the parts to be treated should be clean and oil-free by cleaning before loading them into the furnace，At present, the main cleaning methods are as follows： ①、Wash with high temperature steam and cleaning agent and then rinse with high temperature steam； ②、Automatic cleaning machine cleaning； ③、Gasoline scrubbing。 The third way is a workaround when production conditions are not available，Suitable for small cleaning only。 2.Nitriding process Ion nitriding process parameters are generally： Average warming rate100℃／Hour (s)；
2015-03-25 Reading quantity 1462
introduction：CADKEY V21Its based on brand newCADKEY v20Version based on software，Further revision of the software。It integrates previously included inDRAFT-PAKIn the machine functions andFastSURFAdvanced surface molding and processing functions。All of these features are included in standard drop-down menus and color palette ICONS。CADKEY V21In the，Lots of performance in other functional areas，printability，The layer performance has been greatly improved。illumination，Fastening force，trait，Both the mold shape and the surface entity list are new entity forms。This means better integration and use
2015-03-25 Reading quantity 2814
introduction：pick to：This paper discusses the use of several commonly used speed regulation methods in water supply system by combining theory and examples，It provides some reference for the water supply industry in the choice of speed regulation mode。 keyword：、Electromagnetic speed regulation、、Variable frequency speed regulation According to statistics，The water supply project can consume the cost of water supply30～70，The energy consumption of the pump accounts for the total energy consumption90around。In actual operation，The efficiency of the pump is mostly inadequate60，The overall efficiency of the pumping station is insufficient50，There is a large waste of energy。At a time when energy supplies are tight，Water pump water saving technology is used in engineering design，Correct advance
2015-03-25 Reading quantity 2916
introduction： q：When extruding PVC sheets for transparent packaging，The sheet shrinks seriously and deforms，How to solve this problem？——Chen Wei from Shandong a：There are two possible reasons for this phenomenon：（1）The mold lip opening is too large （2）The roller speed ratio is too high or unstable。 q：How to color high strength polystyrene，The result is a bright bluish white？——Peking Liu Lin a：A fluorescent whitening agent may be used，Please refer to...Ciba Company inquiry。 q：waste PE、PPHow is the film crushed and re-granulated？waste PE、PPWhat are the current and future prospects of grain？ a：
2015-03-25 Reading quantity 2804
introduction：（1）Pay attention to the placement of the workpiece，Ensure uniform heating，Prevent overheating。When using a gas or natural gas stove，Be careful not to heat the nozzle or flame directly on the workpiece。 （2）Shaft and slender rod workpieces，Pay attention to the placement of the workpiece，Prevent deformation。 （3）When fully annealed，Generally small and medium carbon steel and low alloy steel workpieces，You cant control the heating rate，Load directly into a furnace that has been heated to annealing temperature；Can also be low temperature furnace，Heating up with furnace。centring、Large pieces of high alloy or complex shape，Low temperature charging，Stepwise heating，And control the temperature rise rate does not exceed100℃/h。 （4）Large scale worker
2015-03-25 Reading quantity 1559
introduction： The series of products are widely used in various viscosity liquid materials online（1n-Line)Continuous dispersion、mixed、Emulsification and homogenization。 Working principle After the liquid material is automatically sucked into the working chamber from the equipment inlet，Under strong shear、grind、Impact and cavitation，Disperse the material、Refined homogenization effect。 Performance characteristics The main working parts of the equipment stator and rotor are made of high strength stainless steel，The surface is specially hardened and precisely manufactured。Reliable operation of equipment，Good wear resistance，Adjustable gap，Long service life，Key technicality
2015-03-25 Reading quantity 2799
introduction： 1、Installation site selection and requirements Installation site should be with lathe、A distance between the grinder and other mechanical equipment。The venue should be cleaned，Keep it dry and clean often，Guard against iron filings、Sand grain、dirt、Water entry 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。]。 2、Check bearing type、Ready for installation
2015-03-25 Reading quantity 1561
introduction：Rolling 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。]Precision component，Appropriate care is required in its use，Not only changed the use of high performanceKOYObearing[KOYObearing:kOYOBearings are generally required to bear large loads，Often without a cage，Instead, fill the inner and outer raceways with rolling elements。And most small and medium-sizedK
2015-03-25 Reading quantity 1442
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