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introduction：1、Up. die The upper die is the upper half of the whole pair of dies，That is, the part of the die mounted on the slider of the press。 2、Upper die holder The upper die seat is the top plate-like part of the upper die，The workpiece is pressed against the press slide，And fixed by the die handle or directly with the press slider。 3、Under the die The lower die is the lower half of the whole pair of dies，That is, the die part installed on the press table surface。 4、Die holder The lower die seat is a plate-like part on the bottom surface of the lower die，When working, it is directly fixed on the press work surface or the backing plate。 5、The blade wall The edge wall is the side wall of the cutting edge of the punching die hole
2015-03-22 Reading quantity 3025
introduction： FAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]Corrosion is mainly divided into metal corrosion and human hand sweat，Metal corrosion accounts for the vast majority，In many cases, its unavoidable。And sweaty hands can also cause itFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]corrosion，Mostly sweat on its surface when it comes into contact
2015-03-22 Reading quantity 1599
introduction： For a long time，The main problem that troubles the majority of mold designers is the long mold development and design cycle，Especially for some special complex sheet metal forming parts，It even restricts the progress of the entire product development，And the sheet material takes shapeCAEThe advent of technology and analytical software，Effectively shorten the mold design cycle，Greatly reduce mold test time，Help enterprises improve product quality，Reduce production costs，Fundamentally improve the market competitiveness of enterprises。 one、 introduction Computer aided design technology with its powerful impact，Influencing and changing every aspect of industry，It even affects the community
2015-03-22 Reading quantity 2829
introduction： Causes of bipolar burns： 1.Some blind spot on the machine，The individual ball can not get the normal grinding surface to become a large ball，The big ball only orbits in the groove，Non-rotation by grinding wheel two groove edge friction extrusion； 2.A groove is a grinding wheel block、Blockage of material and foreign matter，Not detected and eliminated in time，For a long time，The gully will become shallow，When the ball re-enters the groove，Bipolar burns may occur。
2015-03-22 Reading quantity 1486
introduction：Mercury is one of the toxic elements，If there is excessive mercury in food, it is very harmful to human body，Cause disease，Some even die.，So on foodHgThe determination of great importance，Never exceed the standard，So as not to bring risks to human health。measureHgThere are many ways，Such as a special mercury meter，Chemical method，Atomic fluorescence，Cold atomic absorption and hydrogenation occur—Cold atomic absorption method, etc，Compare various methods，We think hydride occurs—Cold atomic absorption method is better，With high sensitivity
2015-03-22 Reading quantity 2955
introduction： The liquid or semi-liquid metal is filled in the mold at high speed under high pressure，Casting method in which a casting is solidified under pressure。The pressure used is 4～500mpa,The metal filling speed is0.5～120meter／seconds。1838AmericanG.Bruce was the first to produce newspaper type by pressure casting，The following year a pressure casting patent was issued。19century60After ten years，Pressure casting method has been greatly developed，Not only can tin lead alloy die casting parts be produced、Zinc alloy die casting，It can also produce aluminum alloys、Copper alloy and magnesium alloy die casting。20century30After that, the pressure casting method of steel was tested
2015-03-22 Reading quantity 2821
introduction：Abstract：In order to improve the surface treatment quality of large volume integrated capacitor housing，Reduce labor intensity，Improve the working environment，Where space is limited，The relevant experiments of environmental protection brush coating phosphating powder were carried out，The film layer with ideal effect of removing oil and rust was obtained，The film has good compatibility with insulating oil，Good corrosion resistance under natural ventilation，The adhesion with the paint film reaches one level。 keyword：Environmentally friendly brush coated phosphating capacitor housing applications1introduction The housing of the integrated capacitor is large，Due to the limited working space，The existing phosphating production line can not meet its phosphating needs，Its sanded by hand
2015-03-22 Reading quantity 2823
introduction：Spraying is a surface strengthening technique，It has always been a key promotion of new technology projects in our country。It uses electric arc、Plasma arc、A heat source in the form of gas and oxygen，Heat a metal or nonmetallic material to a molten or semi-molten state，Under the action of high-speed air flow, it is atomized into fine droplets or high-temperature particles，It is sprayed onto the surface of the treated workpiece at a high flight speed，Form a firm covering layer，So that the workpiece surface to obtain different hardness、wear-resistant、rotproofness、heat-resisting、antioxidant、Thermal insulation、insulation、conduction、seal、disinfection、Protection against microwave radiation and other special physical and chemical properties。It can be repaired during equipment maintenance
2015-03-22 Reading quantity 2822
introduction：*The gate must be designed in the area with the greatest wall thickness。 *Gate should not be located near high stress area。 *For long parts，In particular, enhanced blends，As motor may，The gate should be placed lengthwise rather than sideways or in the center。 *If in two or more cavities，Parts and gates should be arranged symmetrically along the sprue。 *Axially symmetrical parts，Such as gears、disc、blading，It is preferable to use a partition gate and the gate should be centrally located，Or a plurality of gates are arranged on the three-plate mold，To obtain good actual flow characteristics。 *There are integrated hinged parts in the placement of the gate
2015-03-22 Reading quantity 2841
introduction： one，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。]In operation，At timesIKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearings are based on the high quality given by needle roller bearings，Precision machining with unique mechanical equipment
2015-03-22 Reading quantity 1643
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