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introduction： General injection mold design procedure Preparation before design The designer of the mold should design the mold according to the design specification，The mold design task is usually proposed by the plastic product production department，The task book includes the following contents： (1)Approved formal plastic drawing，And indicate the plastic brand used、Transparency etc，If the plastic part drawing is based on the sample mapping，It would be better to attach a sample，Because the sample is more graphic and intuitive than the drawing，It can also give the mold designer a lot of valuable information，Such as the gate location used in the sample、Ejector position、Parting surface, etc。 (2)Plastic parts specification
2015-02-03 Reading quantity 2893
introduction：Welding is done by heating、pressurization，Or both，A processing process and connection method that produces an interatomic bond between two workpieces。Welding is widely used，Can be used for both metals，It can also be used for non-metals。 Development history of welding technology Welding technology emerged with the application of metals，The ancient welding method is mainly cast welding、Brazing and forging。A bronze spear made in the Shang Dynasty of China，Its a cast welding of iron and copper，The surface copper and iron fusion line is winding，Fit well。During the Spring and Autumn period and the Warring States period, there were many coeldragons on the bronze seat of Jianguu in the tomb of Marquis Yi of Zeng，It is brazed in sections。analytically，Make use of
2015-02-03 Reading quantity 2824
introduction：2013years1month7day，Gao Zihui, Minister of the Organization Department of Chongren County Party Committee, led the party branch secretaries and company representatives of the companies，Together came to our company to visit the guidance of the party building work，Zheng Shengyou, chairman of Yifa Holding Group、Jiangxi Yifa transformer company general manager Huang Meiyuan warm reception； Since the 18th National Congress of the CPC，The whole country has set off the energy of earnestly studying and following the 18th National Congress of the Party，Strengthen the companys party building work，Give full play to the exemplary leading role of party members，Promote the rapid development of company coordination，This is the prime intention of the high ministers visit。From Jiangxi I hair this year4-5The first day of a month
2015-02-03 Reading quantity 2836
introduction：1、 In operationIKOBearing process，Regular cleaning is very important。How to clean accuratelyIKObearing？prebearing[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。]Remove it for a search，First use photography and other methods to record the appearance。In addition，Determine the amount of remaining lubricant and sample the lubricant，Then clean the bearing。 2、
2015-02-03 Reading quantity 1564
introduction：a. Press fit Outer spherical ball bearing with seat[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 inner ring is fitted tightly to the shaft，The outer ring and the bearing seat hole are loosely matched，Available press willKOYOThe bearing is first pressed onto the shaft，The shaft is then fitted into the bearing housing hole together with the bearing，On the end face of the bearing inner ring when pressed，Cushion a soft metal
2015-02-03 Reading quantity 1542
introduction：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 raceway sound and its control method the raceway sound is when the bearing is running，A smooth continuous sound made by its rolling body rolling on the raceway surface，Be allFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a cage group with a solid window cage
2015-02-03 Reading quantity 1601
introduction：Welding in water。This kind of welding was originally applied to salvage at sea and emergency repair of ship below the waterline。20century60After ten years，Due to offshore oil extraction，Undersea oil depots are needed、Laying of oil pipelines，Assembly of production platforms, etc，Underwater welding technology has been developed（See color diagram[Underwater welding]）。Underwater welding can be divided into wet welding、Dry welding and partial dry welding3class。 Wet welding welding is performed directly in water。Mainly by manual arc welding。Waterproof coating is applied to the outer surface of underwater welding electrode，A large amount of gas is released during the melting process,Drain the water around the welding arc,
2015-02-03 Reading quantity 2822
introduction： Split double stud positive plain 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。]Seat size type No. D (D4) D
2015-02-03 Reading quantity 1469
introduction： Standard number Standard Chinese name Standard English name JB/T3565-1992(2005reexamine) Long shaft centrifugal deep well pump efficiency JB/T3564-1992
2015-02-03 Reading quantity 2885
introduction：High speed 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。]Applicable material The materials used for high-speed bearings have their own unique aspects。whendmnLow value，The failure form of the bearing can be the fatigue peeling of the surface or the subsurface surface，whiledmnBe worth more than250Ten thousand hours，Cracks in the fatigue layer develop in depth
2015-02-03 Reading quantity 1457
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