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introduction：1：Two conical tubes oblique，What method is used to find the intersecting line？ a：Using the auxiliary spherical method。 2：Which two conditions must be satisfied when using the auxiliary spherical method to find intersecting lines？ a：Satisfy one is the rotation body intersecting，Second, the axes of the rotating body should intersect and reflect the real length。 3：When a line is parallel to a projection plane，What is the property of the projection of this line？ a：Have authenticity。 4：What method can be used to make the development diagram of the round and square transition joint？ a：It can be made by triangle method。 5：What is the main equipment used for blanking presses？a：The main
2015-06-04 Reading quantity 2971
introduction： Brick machine 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。]Lubricating oil can be roughly divided into lithium and calcium based two categories Bearing lubricating oil can be roughly divided into lithium and calcium based two categories。Calcium base grease----Calcium soap made from animal and vegetable fats and lime
2015-06-04 Reading quantity 1684
introduction：Currently known chemical elements are100variety，There are about 20 kinds of chemical elements that can be encountered in steel materials commonly used in industry。For people in the practice of long-term struggle against corrosion phenomenon of stainless steel this special steel series，There are more than a dozen of the most commonly used elements，Except for iron, the basic element that makes up steel，The elements that have the greatest impact on the properties and organization of stainless steel are：carbon、chromium、nickel、manganese、silicon、molybdenum、titanium、niobium、titanium、manganese、nitrogen、copper、Cobalt et al。These elements are decarbonized、silicon、extra-nitrogen，All are transitional group elements in the periodic table。 In fact, the industrial application of stainless steel is the same
2015-06-04 Reading quantity 1616
introduction：Imported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]The inspection and sealing of the rolling mill is now very important、No leakage；The main part of the rolled parts in the mill furnace maintenance process is imported bearings[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]，uncap，
2015-06-03 Reading quantity 1539
introduction： Type specification Model number Evaporated moisture (Calculated by surface moisture)kg/h Installed powerkw
2015-06-03 Reading quantity 2870
introduction：The tooth spacing between the same side profile of two adjacent wheel teethtAnd PIπThe ratio of(m＝t/π)﹐In millimeters。Modulus is one of the most basic parameters of modular gear teeth。Greater modulus﹐The higher the teeth, the thicker they are﹐If the number of teeth of the gear is certain﹐The radial size of the wheel is also larger。Modular series standard is based on design﹑Manufacturing and inspection requirements。For gears with non-straight teeth﹐The modulus has a normal modulusmn﹑End modulusmsAnd axial modulusmxThe difference of﹐Theyre all based on their own tooth spacing(Normal pitch of teeth﹑Transverse pitch and axial pitch)The ratio to PI﹐Also measured in millimeters。For bevel gear﹐die
2015-06-03 Reading quantity 2911
introduction：NACHIDeep groove ball bearing features
2015-06-03 Reading quantity 330
introduction：In order to ensureFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]The performance of，And prevent premature bearing failure，Proper methods must be taken when installing ball bearings and roller bearings and the environment must be kept clean。Just like any other precision part，Be as careful as possible when installing rolling bearings。Choosing the right installation method is as important as using the right installation tools。Can provide a range of maintenance products，Suitable for bearing installation and disassembly，Including mechanical and hydraulic tools and heating equipment，There are others with
2015-06-03 Reading quantity 1746
introduction：duanchui Forging hammer hammer Use the kinetic energy of free falling or forced motion of a weight such as a hammer to strike the blank，A forging machine that causes plastic deformation。The movement of the hammer follows the striking energy formula[0156-01]，Shizhong EFor strike energy，Is the mass of the falling part of the forging hammer,For strike speed。The greater the mass of the falling part of the forging hammer，The more powerful the blow。The specifications of forging hammer are divided into two representations: drop hammer and hammer：The mass of the falling part of the hammer（kilogram）expression；Hammer with striking power（Kilojoule (kJ)）expression。The falling part includes the hammer head、Hammer rod and piston, etc，General forging hammer
2015-06-03 Reading quantity 2883
introduction： 1）density Density is the simplest for petroleum and its products、The most commonly used indicator of physical properties，It refers to the mass of the substance contained in a unit volume at a specified temperature，The unit is：kg/m3 Because at different temperatures，The density will change，The density measured at high temperatures is less than that measured at low temperatures。For ease of comparison，The density of general oil products is often expressed by specifying the density at temperature。Our countryGBstipulate，At standard temperature（20℃）The density below is the standard，densityg/cm3。Density plays an important role in production storage and transportation，Product in process measurement、Its used in refinery process design。
2015-06-03 Reading quantity 1725
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