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introduction：Selective 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。]Type time，It is essential to fully grasp the operating conditions of bearings。The following table lists the main analysis items: Analyze project selection methods 1）Bearing installation space can accommodate the bearing type in the bearing installation space because the design of shafting pays attention to the rigidity of the shaft
2015-02-15 Reading quantity 1598
introduction： GWJHorizontal crystallizer is based on the advanced technology of digesting and absorbing similar foreign products，Combined with the actual situation of domestic and foreign users，And the development and manufacture of a new generation of crystallizer，It is one of the high-quality products necessary for starch sugar processing enterprises。The product uses two sets of cooling circulation system inside and outside，A spiral belt agitator is installed inside the cylinder，The end face is provided with a scraping plate，Both ends are fitted with mechanical seals。Advanced and perfect manufacturing technology。The perfect combination of the two，Is the guarantee of your success。 Product characteristics The transmission is compact，Smooth running，High efficiency，Low noise Reliable machinery
2015-02-15 Reading quantity 2795
introduction：With the increasing application of ion chromatography，Many samples can no longer be sampled using traditional methods、dilution、The filtration and direct injection mode was used for ion chromatography analysis。For a large number of complex matrix samples，Ion chromatography can be used in a suitable way，It was analyzed by ion chromatography after pretreatment，On the one hand, this can solve the contamination of the complex matrix of the sample to the ion chromatographic column，On the other hand, it can also greatly improve the determination results and accuracy of complex matrix samples、Improve the sensitivity of the analytical method。 Related sample pretreatment methods，With the improvement of domestic ion chromatography user level，A number of correlations emerged
2015-02-15 Reading quantity 2887
introduction： 1 Type of thread Thread according to the use can be divided into connection thread and drive thread two categories。The types and uses of common standard threads can be seen in the table1。table1Types and marks of commonly used threads type Feature code Use and description Common thread Coarse teeth
2015-02-15 Reading quantity 2783
introduction： In order to ensure product quality，Improve inspection efficiency，Bearing under inspection[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 whole process，A large number of special measuring tools are used，among，The most used are special standard parts。 1．Common standard parts At present, the standard parts used by each bearing factory come from different sources，conditional
2015-02-15 Reading quantity 1453
introduction：Convex metal cold stamping die、The cutting edge life of die wire-cut molding is shorter than that of grinding molding； Drawing and spinning should be considered as a whole，Sometimes spinning is more convenient than stretching。Copper spinning tool is best to useCr2orCr12Material fabrication，High speed in production、Strong cooling； Blanking with large gap is easier than blanking with small gap，Not only the blanking force is small but also the die life is long。Large gap blanking should be adopted as far as possible under the premise of ensuring that the workpiece does not produce cutting edge collapse according to the specific situation； More straight process to“straighten”Rather than“Smash straight”； The drawing depth distribution of each sequence of the drawing parts is of critical importance；
2015-02-15 Reading quantity 2796
introduction： one．pre-operation： 1. Whether the program is consistent with the artifact 2．Tool magazine，Whether the tool in the tool table is consistent with the tool information in the program 3．Check the good condition of the tool 4．Syntax check of the program，Define necessaryGCODE，MCODE 5．Carry out simulation machining，Check the correctness of the program 6．Make sure that the workpiece coordinate system matches the program coordinate system 7．Finally determine the machine tool state and each
2015-02-15 Reading quantity 2899
introduction： Part design PDG：Part Design Assembly design ASD：Assembly Design Interactive engineering drawing IDR：Interactive Drafting Generative engineering drawing GDR：Generative Drafting Structural design STD：Structure Design Wire rack and surface design WSF：Wireframe and Surface Sheet metal design SMD：Sheet
2015-02-15 Reading quantity 2896
introduction：The molding process is a combination of rapid forming process and traditional resin sand process，It is a new process directly oriented to rapid manufacturing。This process breaks through many barriers of traditional casting manufacturing process，Make a design、Manufacturing constraints are greatly reduced。Meet the rapid response to the market、flexibility。 1 introduction Mould-free manufacturing（Patternless Casting Manufacturing，For shortPCM）The process is a new rapid forming process combined with the traditional resin self-hardening sand process。
2015-02-15 Reading quantity 2788
introduction：Freeze-drying is the process of removing water or other solvents from frozen biological products by sublimation。Sublimation refers to solvent，Such as water，Like dry ice，non-liquid，The process of going directly from a solid to a gas。The freeze-dried product is called freeze-dried（lyophilizer），This process is called freeze-drying（lyophilization）。 Why freeze drying？ Traditional drying causes the material to crinkle，Destructive cell，The structure of the sample will not be damaged during freeze drying，Because the solid components are supported by hard ice in their positions
2015-02-15 Reading quantity 2788
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