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introduction： 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。]The secondary cause of marks appearing in the process of installation is：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 makeNS
2015-02-24 Reading quantity 1431
introduction：1.Working conditions of hot working dies and performance requirements for die materials Hot working die is mainly used for hot pressure processing（Including hammer forging、Hot extrusion、Hot upsetting、Precision forging、High speed forging)And pressure casting，Also includes plastic molding。 Hot forging die，Bear large impact load and working pressure，The cavity of the mold produces intense friction in addition，Also often with being heated to1050~1200℃High temperature blank contact，The cavity surface temperature is generally400℃above，Sometimes reach600~700℃，Then it goes through the water、Oil or compressed air cools the forging die，It alternates between hot and cold
2015-02-24 Reading quantity 1442
introduction： one、Product introduction ZJSSeries in-line manual cleaning filters for all water supply systems、Process piping and industrial circulating water system，especially24A non-stop system that runs continuously for hours，Ensure the safe and reliable operation of the system，Its a simple filter，Widely used in oil、Chemical engineering、metallurgy、Environmental protection、mining、pharmacy、food、Papermaking and other fields。 There are two filter cleaning modes in this series：Brush type and diversion type。 two、Model marking three、Working principle and structure
2015-02-24 Reading quantity 2796
introduction：Heat treatment processes generally include heating、Keep warm、Three cooling processes，Sometimes there are only two processes: heating and cooling。These processes are interconnected，uninterruptible。 Heating is one of the important steps of heat treatment。There are many heating methods for metal heat treatment，Charcoal and coal were first used as heat sources，Liquid and gaseous fuels are then applied。The application of electricity makes heating easy to control，And no environmental pollution。These heat sources allow direct heating，It can also be made by molten salt or metal，Even the floating particles are indirectly heated。 Metal heating，The workpiece is exposed to air，Frequent oxidation、decarburization(The surface carbon of steel parts
2015-02-24 Reading quantity 1537
introduction：In the recent development of rolling 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。]biplanar，They are fitted with appropriate sealing devices。Its function，On the one hand, the grease inside the bearing is maintained（oil）It will not be lost in use，Ensure that bearings are lubricated，On the other hand, it is to protect the dust or harmful gases outside the bearing from entering the bearing cavity，
2015-02-24 Reading quantity 1447
introduction：Hex cap nuts HEX CAP NUTS Hex serrated nuts HEX SERRATED NUTS Hex rim nuts HEX FLANGE NUTS Foot nuts HEX COUPLING NUTS(HIGH NUTS) Round nut ROUND NUTS Four corner nuts SQUARE NUTS Pipe nut PIPE NUTS Wheel housing nuts WHEEL NUTS Butterfly type nuts WING NUTS UThe shape
2015-02-24 Reading quantity 2783
introduction：Unlubricated 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。]Bearing material is mainly polymer、Carbon graphite and special ceramics three categories。 （1）Polymers Polymers are also known as plastics，Plastics used as mechanical engineering materials are called engineering plastics。It is a combination
2015-02-24 Reading quantity 1451
introduction： By a number of rigid members through the low pair(Rotating pair﹑Travelling pair)join﹐A mechanism in which the motion planes of each point on each member are parallel to each other(figure1 Example of planar linkage mechanism )﹐Also known as planar low auxiliary mechanism。Low pairs have low pressure﹑Light wear﹑It is easy to process and the geometry can ensure its own sealing and other advantages﹐Therefore, planar linkage mechanism is widely used in various machinery and instruments。Compared with high auxiliary mechanism﹐It is difficult to achieve the desired motion accurately﹐Complex design calculation。 The most common planar linkage mechanism is the four-bar mechanism﹐It has the lowest number of components﹐And it can change motion。Planar linkage with more than four rods
2015-02-24 Reading quantity 2887
introduction：paxing crawl stick-slip The phenomenon of periodic stop-go or slow-block movement of the follower in sliding friction pair under constant speed driving and certain friction conditions。Crawling is a form of self-excited vibration in mechanical vibration。Each crawl cycle has two phases:One is the storage of energy,The other is the immediate release of energy when it reaches a critical value。Crawling is a sliding guide rail for machine tools(See machine guide)An abnormal state of motion that is common in。To a lesser extent, crawling presents as a vibration that is not detectable by the naked eye，When significant, it is shown as a jump at a large distance。Crawling is significantly reduced
2015-02-24 Reading quantity 2795
introduction：rollSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]The general process of production The parts that make up the rolling bearing have an outer ring、Inner ring、Rolling element and cage。For different parts，The processing process and method are different。For the same kind of part，Joki
2015-02-24 Reading quantity 1455
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