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introduction：1、Rolling bearings with low noise requirements[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。]There are：In the standard bearings produced in our country，Some single-row radial ball bearings and short cylindrical roller bearings have low noise varieties for motor bearings。Which ball bearing from inside diameterφ2.5mmtoφ60mmThere are several varieties of beltsZl、Z2andZ3
2015-05-15 Reading quantity 1681
introduction： The binder is mainly based on its own properties。Superhard abrasives abrasive binding agent mainly：Resin bond、Ceramic bond and metal bond。 Resin bond（B） The binder itself has good elasticity，Have polishing effect，The binder is easy to burn at high temperature。Resin abrasive has good self-sharpening performance，Not easy to plug；A trim is rarely done again，High grinding efficiency，Low grinding roughness，Low grinding temperature，Due to the superior properties of resin bonding abrasives，It is widely used in superhard abrasives。Resin diamond abrasives are used for carbide cutting tools and steel-bonded carbide workpieces and some non-metallic materials
2015-05-15 Reading quantity 2926
introduction：fenmo yejin gaowen hejin Powder metallurgy superalloy powder metallurgy superalloy Superalloy made by powder metallurgy process。This kind of alloy originated from the dispersion-strengthened alloy。1962The DuPont Company based on the principle that thorium dioxide has a dispersion strengthening effect in tungsten，A high temperature thorium dioxide dispersion-strengthened material made by powder metallurgy was developed，Be calledTDnickel，Thus began the production of powder metallurgy superalloys。 Powder metallurgy superalloys are usually strong by alloy
2015-05-15 Reading quantity 2852
introduction：1． Channel spalling in unilateral limit position The spalling in the single limit position of the channel is mainly manifested in the serious spalling ring at the junction of the channel and the retaining edge。The reason is thatINAbearing[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 is not in place or sudden axial overload during operation。Countermeasures are taken to ensureINABearings installed in place or will be free
2015-05-15 Reading quantity 1593
introduction： 201 Because the helix can cause performance interference，pass DXF/DWG Output and input drawings with spirals，Then save the input simply 2D Line for a block，Insert blocks where needed in the drawing。 202 You can use SolidWorks Block to represent the title bar of the drawing。This will make it easy to move or change the title bar size in the drawing。 203 You can place the grid lines in the sketch（If display）Align with linear edges in the model。 204 You can use
2015-05-15 Reading quantity 2821
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。
2015-05-15 Reading quantity 2816
introduction：Fengye Mall electric forklift brake to introduce you to the cleaning method of air filter。There are several ways to do this。 The first is to do it yourself。Open the front hood，There will be a black square or rectangular box。And then theres a big snorkel attached to the throttle thats。Its full of screws.，Some buckle。Its easy to open and take out。Generally clean，Just blow the dust off。If it is too black or used for a long time, it is recommended to replace the installation，When installing the air filter，And blow on the inside first。 Need periodic clearance
2015-05-15 Reading quantity 2807
introduction： A basic management technology of modern industrial enterprises。Its task is to find the best limb movement trajectory and the required standard time and appropriate physical exertion in the process of production operation﹐To achieve the purpose of reasonable operation and improve work efficiency。Its basic method is to decompose and analyze the operation sequence and actions of workers﹐Measure and record the time required to complete various operations﹐Filtered to become the new standard operating methods and operating hours。 19End of the century20The beginning of the century﹐America
2015-05-15 Reading quantity 2909
introduction：1、Comply with casting equipment general operating procedures。、 2、And you have to do it before you go to work： a、 Check belt tightness and wear，If too tight、Too loose or badly worn，Appropriate adjustment or replacement should be made。 b、 Check the grinding wheel for cracks or notches，Strictly forbidden to use； c、 Check that the shield is safe and secure，If not safe and reliable，Maintenance personnel should be notified to repair。 d、 Idle running2-3minutes，Just make sure everythings okay，Before production can proceed。 3、It must also be observed at work： a、 While driving、Fan opening，Rear open wheel。Parking time，Stop grinding wheel，Last stop
2015-05-15 Reading quantity 2790
introduction：Common compact defects and their causes are as follows： （1）Uneven density。 The reasons are as follows：1）The compression ratio of each part is inconsistent；2）Mold finish is low，Increased friction resistance；3）underlubrication；4）The part size is not reasonable（The aspect ratio is too large，The long wall thickness ratio is too large……）；5）Wrong pressing。 （2）crack。 The reasons are as follows：1）Uneven density；2）The powder has poor formability，High elastic after-effect of compact；3）The release mode is wrong；4）Die stiffness difference；5）The mold has an inverted taper。 （3）The edges and corners fall off。 The reasons are as follows：1）Powder formability
2015-05-15 Reading quantity 1547
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