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introduction： SECCMaterial standard 1.theme This standard specifies our electric galvanized thin carbon steel stripSECCTechnical requirements of。 *This standard is applicable to the production of reloading process and rolling processSECC。 2.Reference standard GB223 Methods for chemical analysis of steel and alloys GB228 Tensile test methods for metals GB230
2015-04-15 Reading quantity 2798
introduction：Who is better and who is worse？Its been debated for years，But its hard to make a definitive statement。 Perhaps the answer lies in the constant innovation and combination of technologies。 PLCorigin IEEEwillPLCBe defined as：Solid state control system with programming capability，Similar to relay logic system。Relay logic or ladder diagram，The name comes from the use of relays to control industrial equipment。Different from hardwired systems（hard-wired），It has greater simplicity。 Relay logic is often used to design motor circuits and relay integral control panels。Relay logic is called ladder logic because it is written
2015-04-15 Reading quantity 2914
introduction：1．Selection principle of cutting parameters Whether the cutting parameters are selected reasonably，To give full play to the potential of the machine tool and the cutting performance of the tool，Achieve high quality、High yield、Low cost and safe operation play an important role。 The selection principle of cutting parameters is：Rough turning time，First consider choosing as large a cut as possibleαp，Secondly, choose a larger feed amountf，Finally determine a suitable cutting speedVc。Increase the amount of back cutαpIt can reduce the number of knife trips，Increase the feedfConducive to chip breaking。Finishing time，Machining accuracy and surface roughness requirements are high，The processing allowance is small and uniform，Selective cutting
2015-04-15 Reading quantity 1454
introduction：First of all，DCSThe skeleton of——System network，It is...DCSThe foundation and core。Because the network isDCSReal-time performance of the entire system、Reliability and scalability，Plays a decisive role，Therefore, each manufacturer has carried out careful design in this respect。towardsDCSThe system network，It must meet the requirements of real-time，That is, the transmission of information is completed within a certain time limit。What is said here“OK”Time limit，It means in any case，The transmission can be completed within this time limit，This time limit is determined according to the real-time requirements of the controlled process。therefore，System of measurement
2015-04-15 Reading quantity 2893
introduction： Main use This machine is suitable for pharmaceutical、Chemical engineering、Food and other industries、It is a new generation of crushing equipment integrating crushing and vacuuming。 Working principle The unit utilizes the relative motion between the movable and fixed gear discs，Impact material through teeth、Friction and the impact of materials on each other to shatter。The crushed material is subjected to the action of rotating centrifugal force，Automatic access to the bag，The dust is filtered by the vacuum box through the cloth bag and recovered。press“GMP”Standard design，All made of stainless steel，No dust flying in the production process。Up to now
2015-04-15 Reading quantity 2800
introduction： 1、Antirust property For 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 grease inside must have anti-rust effect，Rust inhibitor preferably insoluble in water。Grease should have good adhesion，And can form an oil film on the surface of the steel。 2、Mechanical stability Grease
2015-04-15 Reading quantity 1465
introduction：Locomotive rolling 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。]Fault generation and diagnosis method(two) 3Bearing fault detection and diagnosis At present, the means used to detect bearing faults in China are generally temperature measurement、Methods of noise and vibration parameters，thermometry、The method of noise is relatively simple，
2015-04-15 Reading quantity 1571
introduction： How to better maintain electric forklift trucks one、Routine maintenance 1、Clean the dirt on the forklift、Dirt and dirt，The key position is：Fork and gantry slipway、Generator and starter、Battery electrode fork post、cistern、The air filter。 2、Check the tightness of each part，The point is：Fork support、Lifting chain tighten screws、Wheel screw、Wheel pin、brake、Steering gear screws。 3、Check foot brake、Reliability of steering gear、flexibility。
2015-04-15 Reading quantity 2890
introduction： Use double-sided or single-sided meshing method(See gear measurement)Length measuring tool for measuring gear accuracy。The gear comprehensive tester is divided into two kinds: double-sided mesh tester and single-sided mesh tester。 Double-sided gear mesh tester Double rodent for short﹐It is used to measure radial synthesis error and change of center distance of gear pair。figure1 Double-sided gear mesh tester This is the shape of the instrument。The measuring gear is driven by double-sided meshing with the measured gear under the action of spring force﹐The radial runout of the ring teeth of the latter﹑Tooth profile error
2015-04-15 Reading quantity 2779
introduction： First, the large-scale blast furnace will be further developed。 Second, the level of blast furnace equipment is improving，The degree of automation will make new progress。At present，All new blast furnaces are equipped with bellless top equipment、Blast furnace expert operating system、Advanced mud cannon, etc。 Third, the concentration level of blast furnace will be further developed，The structure of the charge is more reasonable。In this regard，Glomerular sintering、Low temperature sintering、The popularization and improvement of low silicon sintering technology，The quality of sinter will be further improved。meanwhile，enhance
2015-04-15 Reading quantity 2789
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