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introduction： willKOYObearing[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。]When removed for inspection，First use photography and other methods to record the appearance。In addition，Determine the amount of remaining lubricant and sample the lubricant，Then clean the bearing。 The cleaning of bearings is coarse
2015-04-20 Reading quantity 1462
introduction：Papermaking wastewater mainly comes from two production processes of pulping and papermaking in papermaking industry。Pulping is the separation of fibers from raw plant materials，sizing，rebleach；Paper is made by diluting the stock、molding、press、drying，Made paper。Both processes produce large amounts of wastewater。Wastewater from pulping，The most serious pollution。The effluent is black brown when washing the pulp，Its called black water，Black water has a high concentration of contaminants，BODReach up to5—40g/L，High fiber content、Inorganic salts and pigments。The wastewater from the bleaching process also contains a lot of acid and alkali substances。Waste water from the paper machine，Called white water，Which contains large
2015-04-20 Reading quantity 2918
introduction： Projected area of cavity wall wall thick， milli&n
2015-04-19 Reading quantity 2849
introduction：one、Stainless steel hot rolled steel plate Hot rolled stainless steel plate is a stainless steel plate produced by hot rolling process。Thickness not more than3mmThin plate，Thickness greater than3mmFor the thick plate used in chemical industry、petroleum、machine、Shipbuilding and other industries manufacture corrosion-resistant parts、Containers and equipment。Its classification and brand are as follows： 1．Austenitic steel (1)1Cr17Mn6Ni15N；(2)1Cr18
2015-04-19 Reading quantity 2949
introduction：By having inner teeth、A movable rigid coupling consisting of an outer sleeve with flange and an inner sleeve with outer teeth(See picture[Gear coupling diagram])。The hub of the inner sleeve is respectively connected with the drive shaft and the driven shaft；The two outer sleeves are fastened together by bolts outside the flange。Working hours，The inner teeth engage with the outer teeth。Within the、The pressure Angle of the outer teeth is mainly used20°Involute tooth shape，The clearance of the tooth side is larger than that of the general gear pair。The outer tooth top round bus is made of spherical surface，The spherical center is on the axis of the gear，The relative radiality of the two axes is therefore compensated、Axial direction、Characteristics of angular displacement。 To improve the contact conditions of the teeth，Raise the coupling
2015-04-19 Reading quantity 2886
introduction： In the second half of the year, the impact of the slowdown in fixed asset investment appeared，The growth rate of the machinery industry will fall significantly，meanwhile，Sub-sectors will diverge。 Medium container、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。]valve、Electric machine、Boiler manufacturing and other sub-industries continued to operate at a high boom in the first half of the year，Cumulative gross profit
2015-04-19 Reading quantity 2832
introduction：Current automobile 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。]There are two camps in the market，One is the roller bearings that people use the most（For example, Huizhong products），The other is a double row angular contact ball bearing（For exampleSKF、FAG）Many foreign bearing companies such as the production of automotive bearings。 In fact, most foreign automobile bearings are double
2015-04-19 Reading quantity 1694
introduction： A blank is120㎜×60㎜×10㎜board，5㎜The deep exterior outline has been roughed up，Keep around2㎜margin，It is required to process the outer outline as shown in the following figureφ20㎜Hole of...。The workpiece material is aluminum。 1．According to the drawing requirements，Determine the process plan and processing route 1）Take the bottom surface as the positioning basis，Press both sides tightly with platen，Fixed on the milling machine workbench 2）Work sequence ① boreholeφ20㎜。 ② According to theO’ABCDEFGLine milling profile。 2．Choose an economical CNC milling machine，Central ChinaⅠtype（XZK7
2015-04-19 Reading quantity 2888
introduction： A drill that produces holes in a solid material in a circular cutting manner。Nesting process can leave the core﹐Can save materials﹐Reduce the power consumption of the machine。When it is necessary to remove the sample from the center of the material for performance testing﹐Nesting drill can not be replaced by other tools。Nesting drills are usually used for machining diameters60Mm above the hole﹐Nesting depth of up to ten meters。Nesting drill has two kinds of external and internal chip removal(See deep hole drill)。The main advantage of an external chip drill is the required cutting fluid system
2015-04-19 Reading quantity 2797
introduction： one、 Power generation industry： The power generation industry is mainly steam turbine oil。Steam turbine oil in operation has the following two functions： 1.Turbine 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。]And starting part due to friction and high temperature steam produce a lot of heat，The steam turbine oil is constantly circulating through to heat this part
2015-04-19 Reading quantity 2801
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