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The quenched metal workpiece is placed at room temperature or higher temperature for an appropriate time﹐Metal heat treatment process to increase the strength of metal。Aging treatment at room temperature is natural aging﹔The aging treatment at higher temperature is artificial aging。In mechanical production﹐To stabilize the casting size﹐Castings are often placed at room temperature for a long time﹐Then the cutting is carried out。This measure is also called prescription。But this aging does not belong to the metal heat treatment process。 20Early century﹐German engineersA.Wilm discovered when he studied duralumin﹐This alloy quenching
Industrial noise generally refers to the process of industrial production．The sound made by the operation of mechanical equipment。Industrial noise mainly includes aerodynamic noise、Mechanical noise and electromagnetic noise。 Aerodynamic noise is caused by gas vibration。When the gas is disturbed，When there is an interaction between a gas and an object，This noise is generated。blower、Air compressor、Gas turbine、Both blast furnace and boiler exhaust can produce aerodynamic noise。 Mechanical noise is caused by solid vibration。On impact、rub、Under the action of alternating mechanical stress or magnetic stress，Metal plates for mechanical equipment、
Material selection Correct choice Generally speaking，There is no bad material，Only the wrong material was used in a specific area。therefore，Designers must have a thorough understanding of the properties of the various materials available，And test these materials carefully，The effects of these and various factors on the properties of molded products were studied。 figure1 Traditional thermoplastic materials Thermoplastics are most commonly used in injection molding。It can also be divided into amorphous plastics and semi-crystalline plastics（See picture1）。Both types of materials are affected in molecular structure and by crystallization
1、Abide by《General operating rules for casting equipment》Relevant provisions： 2、And you have to do it before you go to work： a、 Check sand transport for cracks and notches，If defective，Strictly forbidden to use； b、 Check whether the fixture is loose，Remove broken skin or other debris that prevents proper installation of parts； c、 Point by point test run first，Then air transport2-3minutes，And check the palmar wheel、Friction wheel、Whether the movement of the transmission chain and other mechanisms is smooth，Just make sure everythings okay，Before production can proceed。 3、It must also be observed at work： a、 Operators should wear glasses and other protective equipment； b、 Driving on the job
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 lubrication methods are mainly divided into grease lubrication and oil lubrication． Grease lubrication Grease lubrication can be done after filling a grease for a long time without supplementation，And the structure of the sealing device is relatively simple，So its widely used。 Grease lubrication has a pre-sealed type
The so-called crusher is that some substances can be crushed，According to the use of different fields and performance requirements，We may use different crushers，There are four main kinds of crusher we commonly use：Jaw crusher、Cone crusher、Roll crusher and impact crusher，The knowledge of these four different types of crushers is analyzed below。 1、Jaw crusher（Tigers mouth）。The crushing action depends on the periodic pressure of the movable jaw plate to the fixed jaw plate，Crush the trapped ore。 2、Cone crusher。The ore block lies between the inner and outer cones，External conical solid
one、Why use a non-contact infrared thermometer？ Non-contact infrared thermometer using infrared technology can quickly and easily measure the surface temperature of objects。Rapid temperature readings are obtained without mechanical contact with the object under test。Just aim，Push trigger，inLCDTemperature data is read on the display。Infrared thermometer is light in weight、Small size、Easy to use，And can reliably measure heat、Dangerous or inaccessible objects，Without contaminating or damaging the object under test。The infrared thermometer can take several readings per second,The contact thermometer takes several minutes per second to measure。 two、Infrared thermometer such as
Correct graspKOYOBearing in the use of mechanical device parts and use conditions and environmental conditions are to select the appropriate 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 premise of...。for，Data and information are required in the following areas： （1）Function and structure of mechanical device （2）bearing[bearing:bearing（“Bea
IKOSelf-aligning roller 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。]After installation，To check that the installation is correct，An operational check is required。Small machines can be turned by hand，To make sure the rotation is smooth。Check items for foreign bodies、scar、Indentation caused by running not
FAGImported 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。]One kind of noise is generated by the bearing itself，That is, the inherent noise of bearings;The other isFAGImported 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，
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