Technical articles
Characteristics of zinc alloys 1. Significant ratio。 2. Good casting performance,Can die cast complex shapes、Thin-walled precision pieces,Smooth casting surface。 3. Surface treatment available:electroplate、spray、
1、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。]Installation of TIMKENWhether the bearings are installed correctly,Affect the accuracy、Life span、property。therefore,The design and assembly department should fully study the installation of bearings。It is expected to be installed according to operating standards。The operating standard items are usually as follows: (1)Bearing cleaning
Usually grease is mainly used to lubricate rolling 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。],In many cases these greases are not suitable for lubricating couplings,This is because there are many differences in the working characteristics of bearings and flexible couplings。 The friction in the bearing is basically in rolling friction(Ball bearing),Or mainly rolling friction
Accessories to compensate for changes in pipe length,Also known as expansion joint or compensator。The expansion joint is mainly used to compensate the expansion deformation of the pipeline due to temperature change,It is also used for pipe length compensation due to installation adjustment,It is mainly divided into curved expansion joints、Bellows expansion joint and casing expansion joint 3Species structure form。 The bent-type expansion joint bends the pipe intoUShape or other form(figure1[Bent expansion joint]),And use the elastic deformation ability of the body to compensate for an expansion joint。It has the advantage of good strength、Long life、Can be made on site,The disadvantage is that it takes up a lot of space、Consume more steel and
Nickel is the main alloying element in austenitic stainless steel,Its main role is to 1 million and stabilize austenite,The steel obtained complete austenitic structure,Thus, the steel has good strength and plasticity,Fit of toughness,And has excellent cooling,Hot workability and cold forming ability as well as welding,Low temperature and no magnetic properties,At the same time, the thermodynamic stability of austenitic stainless steel is improved,Make it more than the same chromium,Molybdenum content of ferrite,Stainless steel such as martensite has better rust resistance and oxidation resistance,Moreover, the stability of the surface film is improved,Thus, the steel also has a more excellent resistance to some reducing media。
Lubricating oil is not qualified or used for too long。At present, the lubricating oil used by the reducer is orchid chain320#Extreme pressure gear oil,If the oil that is expired or inconsistent with the lubricating oil nature of the model is added, and the reducer has not replaced the lubricating oil for more than half a year, it may lead to the oil temperature of the reducer is too high; b.overlube。6JS-110The oil filling standard of the reducer is in4.2.1As explained in,When the liquid level of the oil is higher than the above two positions,Will cause the reducer oil temperature is too high; c.Machine damage。Machine damage including gear pitting serious,Broken tooth,bearing[bearing:bearing(“Bearin
1.Incomplete fluid lubricated 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。] Generally, grease is used、Oil rope lubrication with drip oil form,The shaft diameter and bearing surface are not sufficiently lubricated,The liquid oil film is discontinuous。Simple structure,High friction factor,Greater wear。 (1)Radial plain bearing a.unitary Axis to axis
A small and light lifting device used to lift or pull heavy objects by manually pulling a chain or turning a handle(Hoisting machinery)。Break up the pull gourd and the lever gourd two kinds。 ① Hand hoist:The chain is pulled by hand,Through sprocket、The gear drives the lifting chain up、Drop weight(figure1 [Hand hoist])。Hand chain and lifting chain mostly use ring chain。Hand hoist with ratchet、pawl(See ratchet mechanism),To stop the weight from falling freely。The lifting weight is generally0.5~30Tons of,The lifting height is usually2.5~3meter,It can be bigger。It can be used alone,Also available as a beam crane(Visual bridge
Prospective buyer before payment,It is best to start with the end use of the machine、The possible torsion variables of the machine are known、Parts of the bending radius and other aspects carefully consider what to buy。 You have long realized that the company should consider acquiring a bending machine,It is then your responsibility to specify its specifications and recommend a new machine。This is no small responsibility,Once the choice is wrong,Your production costs will go up,The bending machine is not expected to recoup its costs。therefore,There are several factors to weigh in the decision。 workpiece The first important thing to consider is the parts you are going to produce,The point is to buy one that can
Cylindrical 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。]It is a separate type bearing,Easy to install and disassemble。Cylindrical roller bearings are divided into single rows、Double and multiple row cylindrical roller bearings。 Single row cylindrical roller bearing,According to the ring flange is divided into different