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introduction：INAbearing[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 structure design is reasonable and has the ability to improve the predecessors，There will be a longer ball screw bearing life。Bearings are generally made by casting、Heat treatment、turning、Grinding and assembly and other processing processes。Fairness of each processing technology、Improve ones seniority、Not being promiscuous will also affect it
2015-02-11 Reading quantity 1563
introduction：What is the reason for the lift speed of the forklift truck 1、Unidirectional throttle valve failure cargo fork can not lift the reason 2、Oil pump worn or leaking 3、Distributor safety valve spring pressure is too low or ball and seat wear 4、The clearance between the distributor lifting valve barrel and the lifting valve stem is too large 5、The clearance between the lifting cylinder and the piston is too large，Or oil seal aging、breakdown 6、Pipe or connector leakage
2015-02-11 Reading quantity 2904
introduction： With the development of the national economy、The improvement of peoples living standards，Brought a boom in tourism，In particular, the development of the restaurant industry is extremely rapid。At the same time, the oil smoke pollution of the catering industry is becoming more and more serious，It has become one of the important reasons for urban air pollution，It has seriously affected the health of urban people，So controlling air pollution is our common desire，Let us have blue sky and clear water together，Our company relies on Tsinghua Unigroups high-tech technology level，Developed with the latest generation high performance《ZYJ-JDType family（Electrostatic type）Oil fume purifier》，Especially suitable for catering industry
2015-02-11 Reading quantity 2793
introduction： SKFbearing[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 type prefixes and suffixes of four row tapered roller bearings are explained below Conform toSKF ExplorerPerformance grade specificationSKFbearing[SKFbearing:SKFThe full name is“Sv
2015-02-11 Reading quantity 1455
introduction： The period from the beginning of the internal combustion engine to the time when it does not work properly。There are different understandings of the life of internal combustion engines﹐One refers to the whole life of the internal combustion engine from the beginning of use to the end of damage﹔The other refers to the overhaul life from the beginning of use to the first overhaul。Major parts need to be repaired and replaced during overhaul﹐After many overhauls, the whole life is no longer meaningful﹐So people usually pay more attention to overhaul life。Under what circumstances is an overhaul needed﹐There are no absolutely clear norms。It is generally believed that﹐As an important part(Cylinder liner﹑Crankshaft scheduling)Wear overrun﹐The performance of the internal combustion engine should be overhauled when it is in normal operation。
2015-02-11 Reading quantity 2874
introduction：In the transmission mode of the reducer,Worm gear drive has characteristics that other gear drives do not have,That is, the worm can easily turn the worm gear，But the worm wheel cant turn the worm。This is because the structure and transmission of the worm gear are caused by friction。The self-locking function of the worm gear transmission mode is very useful in mechanical applications，Like a winch，Conveying equipment, etc.。However, it is also because of the friction transmission mode of worm gear，It also causes the transmission efficiency of worm gear to be much lower than that of gear transmission。Look out：Not all worm gear drives have a good self-locking function，The self-locking function of worm gear can be realized only when the speed ratio reaches a certain level
2015-02-11 Reading quantity 2892
introduction：If the antifriction coating is directly electroplated on the lining metal，The tin in the coating is easy to diffuse to the lining，Make the bearing after working for a period of time，The tin content in the coating decreases to less than6％(Quality)。And whether it is copper base alloy lining or aluminum base alloy lining，They all contain a certain amount of copper，Tin diffused into the lining can form brittle intermetallic compounds with copper(Cu3Sn)。This not only reduces the mechanical properties of the coating，And it destroyed the structure of the lining，To reduce the overall mechanical properties of the bearing。The solution to this problem is to electroplate a layer of nickel or nickel-based alloy barrier between the lining material and the antifriction base layer(again
2015-02-11 Reading quantity 1443
introduction： Solid particles in the mixture of liquid and solid particles are trapped by porous filter media to achieve solid－Equipment for liquid separation。Filters are widely used in chemical industry﹑petroleum﹑pharmacy﹑Light industry﹑food﹑beneficiation﹑Coal and water treatment sectors。 Brief history Filtration technology has been applied to production in ancient China﹐B.c.200Paper made of plant fiber is available。A.d.105CAI Lun improved the papermaking method。In the process of making paper, he uses plant fiber pulp on dense thin bamboo curtains。The water filtered through a slit in the bamboo curtain﹐A thin layer of wet pulp remains on the bamboo curtain﹐When dry, it becomes paper。Most of the earliest filters were
2015-02-11 Reading quantity 2792
introduction： one、cracking Cracking is a common defect in plastic products，The main reason is due to stress deformation。There is mainly residual stress、External stress and stress deformation caused by external environment。 (one)Cracking caused by residual stress The residual stress is mainly due to the following three conditions，Immediate overfill、Ejection and metal inlay caused。As a crack produced in the case of overfilling，The solution can be mainly started in the following aspects： (1)Minimum pressure loss due to straight gate，therefore，If the crack is most important
2015-02-11 Reading quantity 2893
introduction：1.The contact Angle is perpendicular to the 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 plane of the axis line(Radial plane)The resultant action line with the roller driven by the bearing ring or washer(Nominal line of action)The Angle between。 2.intra-ball(Outside diameter)Bearing inside a row of balls(outside)The diameter of the cylinder。
2015-02-11 Reading quantity 1573
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