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introduction：Mold repair welding several points： 1。The electrode should be preheated，The composition of the electrode should be the same or close to the composition of the die steel，To ensure uniform structure after welding 2。The mold should be preheated above martensitic temperature，But not too high.。 3。The current should be controlled small，Otherwise, the welding depth is too large。 4。The mold should be kept preheated during welding。 5。When necessary，Heat treatment after welding。
2015-02-11 Reading quantity 2801
introduction：Edm wire cutting machine according to the cutting speed can be divided into high-speed wire and low-speed wire walking two，The surface roughness and processing accuracy of the workpiece processed by the low-speed wire cutting machine are slightly better than that of the high-speed wire cutting machine，However, the machine cost and use cost of low-speed wire cutting machine tools are relatively high，At present, it has not been popularized in China，The original high-speed wire cutting machine tool of our country has simple structure，Low machine cost and use cost，Easy to process large thickness workpieces，Near warp40Annual development，Has become the largest output in our country，One of the most widely used types of machine tools，In mold manufacturing、It has been widely used in the trial production of new products and parts processing。
2015-02-11 Reading quantity 2804
introduction：The solution provided is processed，But probably becauseKOYObearing[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-sizedKOYORolling bearings are equipped with retainers。 inKOYOBearing in the processing process，The outer ring of the bearing、Inner ring、How do the roller and cage fit together。]The causes of fever vary，So the solution is different，So its still case by case，Complete with the help of a technician。 If you look at the trajectory carefully，the
2015-02-11 Reading quantity 1561
introduction：Spherical roller 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。]Supplementary code，Suffixes are used to identify certain characteristics of spherical roller bearings，Which includesSKFOpen design of spherical roller bearings，Sealed spherical roller bearing，Bearings for vibrating machinery： C2：The radial clearance is smaller than that of the normal group C3：The radial clearance is greater than that of the normal group
2015-02-11 Reading quantity 1562
introduction：1.pitting The excellent corrosion resistance of stainless steel is due to the formation of an invisible oxide film on the surface of the steel，Make it blunt。The passivation film is formed because the steel reacts with oxygen when exposed to the atmosphere，Or as a result of contact with other oxygen-containing environments。If the passivation film is destroyed，Stainless steel will continue to corrode。In many cases，The passivation film is destroyed only on the metal surface and locally，Corrosion works by forming tiny holes or pits，The surface of the material produces irregular distribution of small pitting corrosion。 2.Factors that cause pitting corrosion The pitting corrosion is likely due to the presence of chlorine combined with the depolarizer
2015-02-11 Reading quantity 1472
introduction： （1）This polishing must be carried out under light pressure as much as possible, especially when polishing pre-hard steel parts and polishing with fine grinding paste。In use#8000Polishing paste when polishing，Common loads are100~200g/cm2，But it is difficult to maintain the accuracy of this load。To make it easier to do that，A thin, narrow handle can be made on the wooden strip，Like adding a piece of copper；Or cut a part of the bamboo strip to make it softer。This helps control the polishing pressure，To ensure that the mold surface pressure is not too high。 （2）When using diamond grinding toss
2015-02-11 Reading quantity 1515
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。]The function of matching is to make the bearing stationary ring and rotating ring respectively with the stationary part of the installation part(Usually a bearing seat)And rotating part
2015-02-11 Reading quantity 1668
introduction： Rapid prototyping technology can be divided into two categories according to the molding method：Forming technology based on laser and other light sources（Laser Technology），Such as：photocuring（SLA ）、Layered physical manufacturing（LOM）、Selective laser powder sintering（SLS）、Shape deposition molding（SDM）Etc.；Injection based molding technology（Jetting Technoloy），Such as：Melt deposition molding（FDM）、Three-dimensional printing（ 3DP ）、Heterogeneous jet deposition（ MJD ）。The following is a brief introduction of the more mature processes。
2015-02-11 Reading quantity 2848
introduction： What is it？ In the core areas of product design，NX3 For the needs of thousands of users,The breakthrough enhancement of user interaction function is realized，Enable designers to handle their daily tasks more efficiently and effectively。From core modeling functions to complex assembly designs，NX3 Take user usability and productivity to the next level。 Companies or organizations focus on production processes and cost reduction at the same time，Product innovation continues。 NX 3 Provides all that is needed for these activities,A complete set of tools，Enable users to
2015-02-11 Reading quantity 2897
introduction：The types of couplings are： LS1Uniformed coupling； LS2One piece elastic coupling； LS3Cross slide coupling； LS4Bellows coupling； LS5Diaphragm coupling； LS6Bellows expanded sleeve coupling； LS7Keyway diaphragm coupling； LS8Single and double diaphragm coupling； LS9Rigid coupling； LS10A plum coupling； LS11Coupling with expansion sleeve； LS12Diaphragm expansion sleeve coupling, etc Common coupling classification and performance introduction one、Flange coupling Flange coupling（
2015-02-11 Reading quantity 1653
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