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introduction：It consists of a tractor and a full trailer or a semi-trailer mounted on the tractor，It can also be made up of freight trucks and full trailers。A car train can take full advantage of the dynamic performance of a towing car or truck,Deliver more goods,Or transport extra large、Extra heavy equipment，The transportation cost is also lower than that of trucks of the same tonnage，It is one of the main ways to improve the efficiency of automobile transportation。Full trailers and semi-trailers have open boxes、closed、self-discharging、Flat plate type、refrigerated、Tank type、Double rack type、Concave low cargo position type and long cargo frame type and other types。A tractor is equipped with several semi-trailers，Traction cars can be reduced during loading and unloading
2015-01-29 Reading quantity 2837
introduction：To improve the fatigue strength of crankshaft，Plasma nitriding technology is used in many factories，Which uses this technology to Shandong crankshaft general factory、Dalian diesel engine plant、Dongfeng Group Chaoyang Diesel Engine Company is a typical representative。Only Shandong crankshaft general factory hasLD－150AMore than 20 plasma nitriding equipment，And Chaoyang diesel engine company to adoptLDMC－150AThe most advanced type in the country、Maximum power、It is famous for the large pulse power plasma nitriding equipment with the largest furnace load。The following is only based on the crankshaft ion nitriding process test made in the above manufacturers to talk about our experience，For the reference of experts and peers。
2015-01-29 Reading quantity 1470
introduction： The grease reacts chemically with oxygen in the air to produce acidic substances，It starts by consuming antioxidant additives in fat，But after a certain point，The resulting organic acids corrode the metal elements and destroy the structure of the grease，Let the drop point drop、Base oil viscosity increases and fluidity deteriorates。A large number of tests show that，The higher the temperature，The life of grease decreases more obviously。As in temperature90~100Degree hour，Every rise in temperature19The degree of，Fat life is reduced by about half，While...10~150Degree hour，Every rise in temperature15The degree of，The life span of fat is also cut in half。Free alkali refers to the absence in the soap-based grease manufacturing process
2015-01-29 Reading quantity 1555
introduction：The material used to make stamping dies is steel、Cemented carbide、Steel bonded carbide、Zinc-base alloy、Low melting point alloy、Aluminium bronze、Polymer materials and so on。At present, most of the materials for manufacturing stamping dies are based on steel，The types of materials commonly used for mold working parts are：Carbon tool steel、Low alloy tool steel、high-carbon High chromium or medium chromium tool steel、Medium carbon alloy steel、High speed steel、Matrix steel and carbide、 Steel bonded carbide and so on。 1. Carbon tool steel Carbon tool steel is used more in the moldT8A、T10AEtc.，The advantage is good processing performance，cheap。But hardenability and red hardiness
2015-01-29 Reading quantity 1555
introduction：3、Performance characteristics ⑴.It can realize the precise control of the strike energy。 The programmed hammer precisely controls the closing time of the strike valve，The energy required for forging is guaranteed，No additional impact energy，So some key parts such as the hammer rod、The life of hammer head and upper and lower die is greatly improved。 ⑵.The return trip is fast。 Because the lower cavity of the main cylinder is always through the accumulator，Upper chamber once depressurized，Can lift the hammer quickly，Therefore, the mold contact time is short，This performance is combined with precise energy control，The service life of forging die can be increased1More than。 ⑶.High forging precision：
2015-01-29 Reading quantity 1459
introduction：Hydrostatic 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。] Rely on external supply of pressure oil﹑A plain bearing with static pressure bearing oil film is established in the bearing to achieve liquid lubrication。Hydrostatic bearings work under liquid lubrication from start to stop﹐So no wear and tear﹐Long service life﹐Low starting power﹐At an extremely low(Even zero)Speed of
2015-01-29 Reading quantity 2843
introduction： one、Poor lubrication( Account for about50％) According to a survey，Poor lubrication is causedKOYOOne of the main reasons for premature bearing damage。The main reasons include：Failure to fill lubricant or lubricating oil in time；The lubricant or lubricating oil is not filled properly；Improper selection of lubricant or lubricating oil；Incorrect lubrication and so on。 Suggestion：Choose the right lubricant or lube，Use the correct lubrication filling method。 two、Improper installation(Account for about16％) 1、Use brute force when installing，Hit it directly with a hammerKOYO
2015-01-29 Reading quantity 1479
introduction： Maintenance method of electromagnetic brake 1、If a worn brake surface is replaced，The minimum clearance between the brake surface and the turntable should be properly adjusted 2、Lubricant is often added to the moving part of the electromagnetic brake。 3、Check the length of armature stroke regularly。Because during the operation of the brake，Due to abrasion of the split surface，The travel length of the armature will increase。When the armature stroke length does not reach the normal value，Adjustments must be made，To restore the minimum clearance between the brake surface and the turntable。If armature
2015-01-29 Reading quantity 2932
introduction：The structure of centrifugal fine filter is complex，There are high-speed moving parts，High maintenance technical requirements。therefore，Pay special attention to the following points during maintenance。 1、Familiar structure，Correct disassembly Lets figure out the structure first、The assembly relationship and assembly mark between the parts are provided。During the disassembly process，Some parts need to be checked，To determine whether it can continue to be used。 2、Clean parts thoroughly Wash the sludge oil from the inner wall of the filter，Then wipe with a clean cloth or blow with compressed air。Remove sediment from the inner wall of the rotor with a wooden knife，Then wash the rotor body with cleaning oil、
2015-01-29 Reading quantity 1535
introduction：Automatic machining plays an important role in modern machining，CNC machine tool processing high speed、High precision is also increasingly favored by the machinery industry。 For ordinary mechanical processing plants or production lines，Exceed annually10The output of 100 million is not incomprehensible，Its unthinkable.。In todays rapid development of science and technology，towardsRexamFor glass companies，Its nothing.。 RexamThe Glass Companys Barnsley plant is the largest glass container production plant in Europe，13Average daily production per line3Million to4Millions of glass containers。These products are used
2015-01-29 Reading quantity 2958
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