A slime centrifuge is a machine that uses centrifugal force to separate components from a mixture of liquid and solid particles or a mixture of liquid and liquid. Mainly used to separate solid particles and liquids in suspension; or to separate two incompatible liquids in emulsions with different densities; can also be used to remove liquids in wet solids; especially ultra-high-speed tube separators can also separate different densities using the different sedimentation velocities of solid particles of different densities or particle sizes in the liquid, some decanter centrifuges can also classify solid particles according to density or particle size.

Its working characteristics are as follows:

1. Centrifugal dehydration: The process of separating liquids and solids by centrifugal force. Two different principles can be used: centrifugal filtration and centrifugal sedimentation.

2. Centrifugal filtration: the processed rotating material is added to the surface of the rotating cone sieve. Under the action of centrifugal force, the solid adheres to the surface of the screen and rotates with the rotor, and the liquid is discharged through the material gap and the screen gap. Dehydrate clean coal.

3. Centrifugal sedimentation: Add coal slime water to a simple rotor, under the action of centrifugal force, the solid settles in the liquid, and the sediment is further squeezed out of the water by centrifugal force, which is mainly used for the dehydration of coal slime.

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Details can be accessed by clicking here:https://www.hsd-industry.com/news/characteristics-of-slime-centrifuge/

High-speed automatic square-bottom machine can be referred to as HD series square-bottom machine, which refers to the square-bottom machine produced by high-tech automatic assembly line. There are many main functions of the process control system of high-speed automatic square-bottom machine. What are the PCS of the square bottom machine and what functions does it have?

HD series square bottom machine process control system

1. Opening quality control

Automatically detect the quality of the opening of the bag tube, and if the unqualified bag tube is opened, the bottom of the bag will not be glued, and it will be automatically removed at the exit of the main machine, and the bottom of the bag will no longer be compressed, which creates favorable conditions for manual renovation and reduces the cost of the bag tube. waste.

2. Empty bag measurement and control

It is one of the measures to ensure the efficient operation of the equipment by automatically judging the empty bag (passing without bag), blowing off the valve opening, and not applying glue, avoiding the possible shutdown caused by the invalid valve plate and gluing.

3. Traffic jam prediction and automatic braking

Once the square bottom machine is in serious traffic jam, it will be difficult to deal with, which will result in a long time of parking. This PCS has a unique traffic jam prediction function, which can quickly and automatically brake when there is a traffic jam sign, which significantly shortens the traffic jam processing time and improves the working efficiency of the equipment. At the same time, this function also has an important protective effect on the mechanical safety of the equipment.

Details can be accessed by clicking here:https://www.lyhuatianm.com/products-information/process-control-system-of-square-bottom-machine.html

There are various slewing bearing failures in production activities, such as crane slewing bearing maintenance, excavator bearing slewing bearing and crane slewing bearing maintenance, but in order to ensure that the construction period is completed on time, the slewing bearing has to be replaced, and it will return to normal in a short time. Work. So what are the precautions in the process of replacing the slewing bearing, let’s take a look at it in detail.

Precautions for slewing bearing replacement

1. When it is difficult to disassemble the slewing bearing on rotary table equipment such as excavator slewing bearing, crane slewing bearing and crane slewing bearing, it is generally due to the excessive deformation of the base or the base, which leads to distortion, and the bolts are difficult to rotate normally;

2. The sealing loss of the slewing bearing means that the channel of the slewing bearing is blocked;

3. The lubricating oil channel cannot be refueled, and the slewing bearing is stuck;

4. The cracking sound of the slewing bearing means that the isolation block, steel ball, roller or channel loss is large;

5. When the slewing bearing parts are disassembled, if the taper pin is not easy to be taken out, generally speaking, the head is reversed; when the taper pin is difficult to pull out through the threaded hole, the next steps are:

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Details can be accessed by clicking here:https://www.prsbearings.com/a/news/precautions-for-slewing-bearing-replacement.html

Special alloy forging is much more difficult than ordinary carbon steel and low-alloy structural steel. To produce special alloy forgings with geometric dimensions and metallurgical quality that meet the requirements, corresponding technical measures must be taken according to different characteristics. These measures are mainly Including process measures, forging and die design measures, quality control measures, testing of forging performance (based on selection of thermodynamic parameters), simulation of forging process, first piece trial forging, etc. Among the above measures, the process measures that need to be taken are described as follows:

1. Reasonably select the temperature, heating speed and holding time of the blank into the furnace

For special alloys with low thermal conductivity (especially large-sized billets), they should be heated at a low speed with the furnace or preheated in the furnace at 800 ° C ~ 850 ° C and held for a period of time, rather than directly heated in the furnace at the initial forging temperature, and then heated It is heated to the initial forging temperature or transferred to a high temperature furnace at the initial forging temperature; the holding time at the initial forging temperature depends on the alloy, which is generally several times longer than that of alloy structural steel.

Other blanks of aluminum, magnesium, copper and their alloys with higher thermal conductivity than steel can be directly put into the high-temperature furnace, the heating speed can be accelerated and the holding time can be appropriately shortened.

2. Properly select the degree of deformation

In view of the characteristics of high alloying degree of special alloys, serious macrosegregation of ingots and forgings, low plasticity and wide critical deformation range, in the forging process, it is necessary to strictly control the degree of deformation of each fire and even the degree of deformation of each stroke of the equipment (deformation degree If it is too large, it may be forged and cracked, and if the degree of deformation is too small, it may fall into the deformation zone, resulting in local grain growth and uneven structure).

3. Strictly control the final forging temperature

In view of the characteristics of high recrystallization temperature and obvious cold work hardening tendency of special alloys, it is necessary to increase or greatly increase the final forging temperature. The forging temperature is about 300°C higher.

4. Reasonably choose the working speed of the forging equipment

For some special alloys that are sensitive to strain rate and slow recrystallization speed, hydraulic presses, mechanical presses and screw presses with lower loading speed should be selected for forging; for high-speed steels with serious mesh fractures, in order to completely crush them For two-shaped broken objects, a forging hammer with high working speed and strong impact force should be selected for forging.

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Details can be accessed by clicking here:https://www.gold-emperor.com/forging-process-flow-of-special-alloy-forgings/

Oil tank truck is a special transportation tool for loading oil products. Because one of the characteristics of oil products is that it can ignite and catch fire at high temperature, oil tank trucks are generally made of good materials to ensure that the oil products inside can be avoided. adversely affected by external factors. So how should a oil tank truck prevent spontaneous combustion in the summer when the temperature is very high?

How to prevent spontaneous combustion of oil tanker in summer

1. Do not modify without authorization

Every part and structure of the tanker has been specially designed, and it has also undergone various tests to ensure safety. However, if the tanker is modified without authorization during use, it may be For example, the modified circuit and equipment used do not match the power and capacitance, which will lead to fire and spontaneous combustion.

2. Do a careful inspection

Because the temperature in summer is too high, especially when exposed to the sun at noon, the ground temperature can even be as high as more than 50 degrees Celsius. In this case, if the oil tanker is loaded with oil products, the driver must do it before leaving the car. It is necessary to conduct a comprehensive inspection to ensure that there are no abnormalities in the electrical appliances and wiring of the tanker, as well as the fuel supply system. In addition, a fire extinguisher that has undergone safety monitoring is also required.

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Details can be accessed by clicking here:https://www.ly-cimc-linyu.com/a/news/summer-oil-tank-truck-spontaneous-combustion.html