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introduction： Make a trace of hot air through the stirring type indirect dryer and material intense contact，caloric90%Supplied by indirect drying。This method is suitable for processing heat sensitive materials in large quantities。 The fluidized bed dryer using the direct drying method is equipped with an indirect heat exchanger for in-bed heating and drying，caloric70%Supplied with indirect heat。In this way, the characteristics of the direct drying method can be better utilized。This method is particularly suitable for handling large quantities of granular materials。
2015-01-12 Reading quantity 2876
introduction：Presumably many engineers have come fromSolidWorks 2005I felt it deeply3DThe charm of，now，Up to date2006Version of the software is more powerful，3DThe power of the more salient。 inSolidWorksThe company organized to“Cutting-edge design and advanced manufacturing3DNew Power”As the theme“SolidWorks World 2005China User Conference”period，SolidWorksThe company releasedSolidWorks Real three-dimensional2006andCOSMOS Real dimensional 3D analysis200
2015-01-12 Reading quantity 2789
introduction：The corrosion resistance of stainless steel depends on chromium，But because chromium is one of the components of steel，So the protection methods are different。 The amount of chromium added is reached10．5％when，The resistance of steel to atmospheric corrosion has increased significantly，But at higher levels of chromium，Although corrosion resistance can still be improved，But not obvious。The reason is when the steel is alloyed with chromium，The type of surface oxide is changed to be similar to that formed on pure chromium metals。This tightly adhered chromium-rich oxide protects the surface，Prevent further oxidation。This oxide layer is extremely thin，Through it you can see the natural luster of the steel surface，Makes stainless steel a unique table
2015-01-12 Reading quantity 1547
introduction： Worm gears are generally made of tin bronze，Paired worm materials are commonly used45Steel hardened toHRC45one55,Still in common use40C:hardeningHRC50one55，Grinding to finish by worm grinderRaO.8fcm,When the reducer is running normally，The worm is like a hardened“file”，File away the worm wheel，Cause the worm gear to wear。Generally speaking，This wear is slow.，Like a factory some reducer can be used10Years or more。If the wear rate is faster，It is necessary to consider whether the selection of the reducer is correct，Whether there is overload operation，Material of worm gear，Assembly quality or use environment and other reasons。
2015-01-12 Reading quantity 2830
introduction：It evaluates the various possible risks、analyze，In order to eliminate these risks on the basis of existing technology or reduce these risks to an acceptable level。 FMEAIts actually a serialized set of activities，The process includes：Find the product/Potential failure modes during the process；According to the corresponding evaluation system, the risk quantitative evaluation is carried out for the potential failure modes；List the cause of the failure/mechanism，Look for prevention or improvement measures。 Failure mode、influence、Analysis module Its core part is to analyze and study specific systems，Determine how to modify the system to improve overall reliability，Failure avoidance。 For accuracy
2015-01-12 Reading quantity 2921
introduction：The insulation performance and arc track resistance directly affect the size of the device，Its importance has been described。Plastics used on such devices，When and fire（Arc or burn）The relevant energy sources do not exist，It can extinguish itself。In other words，Under fault conditions，If the action of a safety or similar safety device can interrupt the energy injection，Then the spread of the fire can be prevented。 The requirements for the properties of the materials used take into account the extreme conditions encountered in industrial applications。Hydraulic oil、Cleaning agent、Lubricants and the evaporation of liquids during the process require high chemical resistance and stress cracking resistance。Due to the circuit and electricity
2015-01-12 Reading quantity 2959
introduction： A prismatic gauge with accurate angles (figure1 steely12hedron )。Its measuring surface has good optical reflection performance。The number of measuring surfaces is generally8﹑12﹑24and36Etc.﹐Up to72surface。It is often used to verify Angle measuring tools﹐For example, optical indexing head﹑Rotary table﹑Multi-tooth indexing table, etc﹐Time of verification﹐Use autocollimator readings(figure2 Calibration of optical rotary table with polyhedral prism and autocollimator )。The polyhedral prism is in20century40Dated by the BritishC.
2015-01-12 Reading quantity 2951
introduction：Content summary：Virtual manufacturing technology is a new research field supported by virtual reality technology，It is the use of three-dimensional and dynamic simulation models to simulate product design and manufacturing and related processes。Virtual manufacturing system is a new scheme for enterprise integration，This paper presents an architecture of virtual manufacturing system based on integration concept。 0．introduction Todays basic manufacturing technology is becoming more and more mature，Its market is in the consumer-oriented market environment，Product variety、Time to market and customer satisfaction become the main factors for enterprises to gain competitive advantage。This global competition in manufacturing continues to emerge
2015-01-12 Reading quantity 2934
introduction：1．Step grindingIKOTapered 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。]method The two surfaces of the step are ground in a single clamping。Use the circular surface of the grinding wheel to grind the wider surface of the step surface，Use the end face of the grinding wheel to grind the vertical plane of smaller width。You should be careful when grinding the horizontal surface，To prevent the grinding wheel from touching the workpiece during lateral feeding
2015-01-12 Reading quantity 1598
introduction：one．Existing control flow mode Under normal circumstances, the flow and pressure of high-pressure water injection in oil field are regulated by gate valve control。According to technical requirements，Do not allow long periods of small displacement operation，Otherwise, the temperature rise in the pump will cause cavitation and parts burning and other problems，In the past, it was forced to use large reflux methods to reduce temperature rise，Resulting in a large consumption of electricity，It caused a lot of energy loss to the oil field。 In the original design system working condition，Two water injection pumps were used to fill the system。In the absence of frequency conversion speed adjustment，the
2015-01-12 Reading quantity 2954
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