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Stainless steel workpiece after pickling and water washing，Available to contain10％(Mass fraction)NaOH+4％(Mass fraction)KMnO4Base of1Raw permanganate solution in71～82℃Medium soaking5～60min，To remove pickling residue，Then rinse thoroughly with water，And dry。After pickling and passivation, the surface of stainless steel is spotted or stained，It can be removed by scrubbing with fresh passivation solution or high concentration nitric acid。Final pickling passivated stainless steel equipment or components should be protected，Can be covered or bandaged with polyethylene film，Avoid contact between non-metallic and non-metallic metals。 Treatment of acid and passivation waste fluids，Conforming country
Principle of induction heating：The induction belt seat can be placed on the outer spherical 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。]Heater compared to transformer，It works by placing a primary coil with more turns and a secondary coil with fewer turns on the same iron core。The voltage ratio of the input to the output is equal to the ratio of the number of turns of the coil，While the energy stays no
（1） As far as possible use special instrument measurement method； （2） The use of hand push method requires the surveyor to have high measuring skills。The measurement error of this method is large，Especially when the gap is on the edge，Prone to error，now，Instrument measurement shall prevail； （3） When measuring with feeler tape，It should be operated according to the provisions of the standard，Do not use the method of rolling a roller over the feeler ruler; （4） During measurement,Make sure the ball hits the bottom of the ditch;Closed typeIKOBearings are measured before sealing;When using an instrument under load,The measured value should also be subtracted from the increase in clearance caused by the load。 （5） For multiple columns
【Abstract】 Milling is intermittent cutting，The force on the blade during cutting is very complicated，The magnitude and direction of the force changes at any time，The main failure mode of blade is impact damage。therefore，The stress field of milling cutter blade is analyzed by finite element method，In order to find the best geometric Angle of the tool to reduce blade breakage，It is of guiding significance to the development of milling cutter groove。 1．introduction Milling is intermittent cutting，The force on the blade during cutting is very complicated，The magnitude and direction of the force changes at any time，The main failure mode of blade is impact damage。therefore，By finite element method
The fan is faultyIKOBearings are not beyond repair，I will introduce a repair method now。The material is simple.，Just a little aluminum can skin and a little butter(The butter needs to be cleaner、The kind with no impurities)。 1.First, clean the dust from the fan，Prevent dust from entering the installation processIKOin-bearing； 2.willIKORemove bearing seal adhesive，Remove the pin from the shaft； 3.willIKObearing[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
1、Speed and temperature rise： With the development of science and technology，The spindle speed of machine tool is getting higher and higher，The range of speed changes is getting wider，therefore，Butt 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。]High-speed operation stability requirements are also getting higher and higher。Machine tool spindle bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）is
Speed adjustment device for internal combustion engine。Its function is to make the internal combustion engine automatically adjust the fuel supply with the change of load﹐Maintain stable operation within the specified speed range﹐And prevent the occurrence of overspeed or idle stall phenomenon。Fuel inhaled by gasoline engines during operation－The air mixture is affected by the throttling of the internal throttle valve of the intake pipe and the internal throat of the carburetor﹐It has a certain automatic speed limit function﹐Can keep the machine running steadily﹐A separate governor is usually not required。Diesel engines are different﹐Its fuel injection system is separated from the unrestricted air intake system﹐If you do not install a governor, it will run unstable﹐Even speeding or stalling。Therefore, the governor is a diesel engine must not
(1)The resultant force of the force passes as far as possibleKOYOAxis of bearing，This requires the point of application to be uniform, symmetrical and stable，Force is applied through a sphere or parallel to an axis。 (2)The size of the force should be smooth and even，Not to be impacted，This requires the use of oil pressure or tools that can apply smooth tension or pressure，When the hammer had to be used，It should also be cushioned by softer, non-chipping metals such as copper sleeves，Knock as gently as possible。It is best to use a copper rod or copper hammer for hammering。 (3)Avoid applying force through rolling elements，This requires the inner ring to be installed and removed(Shaft ring)Apply force through the inner ring，When installing and removing the outer ring)Apply through the outer ring
1.Cylinder liner wear measurement The general process of engine cylinder liner measurement is：Select the gauge according to the nominal size of the cylinder liner，Micrometer and cylinder gauge(Includes a plunger for a gauge cylinder)；Install and adjust measuring tools，The micrometer is first adjusted to the nominal size of the cylinder liner，Then clamp the gauge rod and insert rod of the dial gauge between the anvil base and the gauge rod of the micrometer，Adjust the extension length of the gauge rod，When the dial indicator small hands have1.5-2.0Grid around the amount of preload when locking rod lock female，And adjust the dial dial to zero； Determine the measuring position and direction of cylinder liner；Survey union
1．Cross slide coupling（WHtype） As shown in the figure2-8As indicated，A cross slide coupling is a half coupling consisting of two end faces with grooves1and3And a floating disk with a tenon on both sides2Be composed of。The two tenons of the floating disc are perpendicular to each other and are embedded in the grooves of the two halves of the coupling，The tenon slides in the groove of the half-coupling。The relative slide is used to compensate for the offset between the two axes。The deflection allowed by it Sum radial displacement （ Is the diameter of the shaft）。To avoid excessive wear and excessive centrifugal force，The shaft speed cannot be too high。To reduce wear、Increased longevity and efficiency，Between the mortise and groove
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