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introduction：The gas generated during injection molding has always been a challenge to the design ability of mold manufacturers，Mold structure is becoming more and more complex，The difficulty of exhaust also increases。The gas in the mold may cause the plastic parts to burn or fill incompletely，And make the product wrinkle or ripple larger，The back pressure in the mold also delays the flow of the injection material。 The traditional solution is to use exhaust parting surface，Exhaust air through vents or other additional devices。But when the mold produces a lot of gas，The effect of traditional exhaust method is not ideal。To solve this problem，International die steel company has developed a porous metalPorcerax Ⅱ，its25%The volume distribution is loose
2015-01-13 Reading quantity 2824
introduction：There are substances in nature3Species morphology:Solid phase、Liquid and gas phases。A flow in which two phases coexist is called a two-phase flow。The heat transfer process between two-phase flow and pipe wall is called two-phase flow heat transfer，Its actually a convective heat transfer。In industrial production，There are various types of two-phase flow and two-phase flow heat transfer。Such as，Flow and heat transfer in fluidized beds in the chemical industry，Flow and heat transfer when conveying powdery and granular solids in pipes,gas-liquid(Or steam-liquid)Two-phase flow heat transfer, etc。Intermediate steam-Liquid two-phase flow heat transfer has been extensively and deeply studied，Because it is widely used in the production of steam boilers、Steam condensing equipment and
2015-01-13 Reading quantity 2923
introduction： Work material Processing mode Cutting tool brand Depth of cuttingαp（mm） Feed quantityf(mm/r)
2015-01-13 Reading quantity 2806
introduction： 1.Industrial lubricating oilISOViscosity class classification ISOViscosity series Kinematic viscositycSt (mm2/s),40℃ Central value
2015-01-13 Reading quantity 1554
introduction： Lathes are mainly used for processing various rotating surfaces and end faces of rotating bodies。Such as turning inside and outside cylinders、Conical surface、Ring groove and forming rotary surface，End turning and all kinds of common threads，Equipped with process equipment can also process a variety of special shape surface。Drilling can also be done on the lathe、reaming、reaming、Knurled and other work。 Milling machine A versatile machine tool，The surface can be machined on the milling machine(Horizontal plane、Vertical plane)、groove(keyway、Tv-groove、Dovetail trough, etc)、Split tooth part(Gear wheel、Splined shaft、Sprocket wheel、Helical surface(
2015-01-13 Reading quantity 1443
introduction： Processing method Uncoated blade Coated blade rough latheYM052、YC45、YC35、YC30①、YC10①、YD15、YW3、YS25、758、726、707YB03①、YB01①、YB02①、CN25Semi-finished car、Finish turningYC10①、YD10.2①、YD20①、YN05、YN10、YD05、YT05、YD15、YW3、YM051、YM052、726②、758、643、712、715、707YB21①、CN15、CN25And a half
2015-01-13 Reading quantity 2796
introduction： What is it？ NX 3 for NX Digital product development systems introduce new levels of user interaction，Provides the level of productivity typically associated with simpler design-centric tools。 NX 3 Built on proven NX Based on the user interaction model，And continueUGS Focus of attention，That is, user interface design based on workflow。NX3Easy to use and easy to customize，The user can concentrate on the task at hand，It removes traditional barriers to learning advanced functions，And accelerate the adoption of new methods of product development。
2015-01-13 Reading quantity 2804
introduction： Consciously trim the tooth surface of the gear﹐Technological measures to make it deviate from the theoretical tooth surface。According to the different parts of the modification﹐Gear tooth modification can be divided into tooth profile modification and tooth direction modification。 Tooth profile modification Trim the tooth profile slightly﹐Make it deviate from the theoretical tooth profile。Tooth profile modification includes edge modification﹑Trimming and digging roots, etc(figure1 Tooth profile modification )。Trimming is the modification of the tooth profile near the top of the tooth。The impact of the gear teeth can be reduced by trimming the edge﹑Vibration and noise﹐Dynamic load reduction﹐Improved tooth surface
2015-01-13 Reading quantity 2893
introduction： In todays increasingly fierce market competition，Enterprises to survive、Seek development，In order to achieve good economic benefits，You have to occupy the market with marketable products，To consolidate and expand the market with high-quality and cheap products。In that sense，Developing the creativity of professionals is the key to business growth。Apply creative thinking and methods to practical work，To analyze and solve the difficult problems in production，It is of great significance to improve work efficiency。 I work for a large enterprise that produces aluminum alloy wheels，Engaged in product development and mold design，By learning creativity
2015-01-13 Reading quantity 2902
introduction： According to the heat aging process code and the characteristics of our companys high casting accuracy requirements，Formulate this operating procedure 1. Preparation before the statute of limitations a) Castings should be cleaned before aging，No debris b) Check all parts of the furnace body、flue、Air duct、Gate trolley、blower、Whether the drag mechanism is normal。 c) Check and calibrate thermocouple instruments at each measuring point，Keep it in working order。 d) Prepare the pad iron according to the casting characteristics、workwear 2. charge a) Each shipment
2015-01-13 Reading quantity 1563
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