Archive for category: news

Forging is the use of forging pressure on metal blank products by forging machines to plastically deform the processed forgings to achieve specific mechanical properties, shapes and sizes. This is an important metal plastic processing method adopted by many forging manufacturers. Many people know about forging, but they don’t know much about the forging process. Today, GOLD EMPEROR FORGING, a forging manufacturer, will share with you some common forging processes.

Classification according to forging temperature:

First of all, the forging process can be classified according to the forging temperature, commonly used are hot forging, warm forging and cold forging.

Classification according to forming principle:

Secondly, we can also divide the forging process into free forging, die forging, ring rolling and special forging according to the forming principle of forgings.

1. Free forging of forging process

Using simple universal tools, or directly applying external force to the blank between the upper and lower anvils of the forging equipment, the blank is deformed, and the processing method of the forging to obtain the required geometric shape and internal quality is free forging. Forgings produced by the free forging method can be called free forgings. Free forging is mostly used to produce small batches of forgings. We can use forging equipment such as forging hammers and hydraulic presses to form and process the blanks to obtain qualified forgings. The basic processes of free forging include upsetting, drawing, punching, cutting, bending, torsion, offset and forging. Free forging is all hot forging.

2. Die forging of forging process.

Die forging can be divided into open die forging and closed die forging. After the metal blank is compressed and deformed in a forging die cavity with a certain shape, the required forgings can be obtained. Die forging is mostly used to produce important light and large-scale parts.

Die forging can be divided into hot forging, warm forging and cold forging. In the future, warm forging and cold forging will use more die forging processes, which are more difficult to forge than other forging methods, and can better reflect the forging technology level of forging manufacturers.

According to forging materials, die forging can also be divided into ferrous metal die forging using ferrous metals such as carbon steel, non-ferrous metal die forging using non-ferrous metals such as copper and aluminum, and powder product forming with powder metallurgy materials.

…

Details can be accessed here: https://www.gold-emperor.com/forging-process-category/

High precision is the main feature of crossed roller bearings different from ordinary bearings. Therefore, in the process of use, more attention should be paid to avoid affecting the working life of the bearing.

Correct use of crossed roller bearings is an important condition for reducing bearing failures and extending bearing life, so how to use crossed roller bearings correctly?

The correct use of crossed roller bearings is mainly divided into two aspects: correct installation and reasonable lubrication.

1. How to install the crossed roller bearing correctly?

(1) Before installing the crossed roller bearing, make sure that the bearing is clean and free of impurities.

(2) When installing, do not tap the bearing with your hands or other tools. It is recommended to use a special tool to press the bearing straight and evenly.

(3) When the seat ring of the crossed roller bearing is loose with the seat hole, it is recommended not to use the method of pockmarking or padding the surface, and continue to use the bearing. At this time, the seat hole should be repaired, or directly Replace the crossed roller bearings.

(4) When disassembling the crossed roller bearing, use a suitable tool to pull out the bearing, and do not hit the crossed roller bearing with a chisel, hand hammer, etc.

2. How to lubricate the cross roller bearing reasonably?

When lubricating crossed roller bearings, the commonly used lubricants are lubricating oil and grease. The two lubricants are used in slightly different scenarios. When the peripheral speed of the shaft is less than 4-5m/s, or the parts of the car that cannot be lubricated with lubricating oil, grease will be used for lubrication. The advantage of using grease lubrication is that the sealing structure is simple, the grease is not easy to lose, and it is not affected by the temperature, and the grease can be used for a longer time.

Crossed roller bearings with high speed and high working environment temperature need to be lubricated with lubricating oil. The advantage of using lubricating oil is that the frictional resistance is smaller and the heat can be dissipated in time. The brand and model of the lubricating oil should be selected according to the requirements of the manual, and should be replaced in time according to the maintenance cycle of the machine. Before replacing the new lubricating oil, the old oil should be released, and the When cleaning the mechanism, the amount of lubricating oil used should be in accordance with the specified marking line, or the same as the oil filling port, and no more should be added.

…

Details can be accessed here: https://www.prsbearings.com/a/news/use-of-crossed-roller-bearings.html

High pressure roller mill is a new type of grinding equipment developed on the basis of roller press for cement in recent years. Mines increase the specific surface area for fine grinding. The high pressure roller mill has the characteristics of high production efficiency, large crushing ratio , low power consumption, significant energy saving and convenient maintenance. For the operator of the high pressure roller mill, as long as the clinker can understand the working principle of the high pressure roller mill, the operation of the high pressure roller mill can be more handy, then do you know what the working principle of the high pressure roller mill is? What principles will be followed when it smashes materials?

The working principle of high pressure roller mill

The high pressure roller mill is the same as the roller crusher in that there are two working rollers, but the working principles of the two are different. The high pressure roller mill is mainly composed of frame, extrusion roller, transmission device and feeding device. The squeezing roller is composed of a movable squeezing roller and a fixed squeezing roller, the two rollers have the same diameter, the axes are parallel to each other, and there is a certain gap between each other. When the high-pressure roller mill starts the motor, the roller shaft starts to rotate under the drive of the motor. At the same time, the movable roller is squeezed by the continuous thrust of the hydraulic cylinder, and the reaction force generated by the extrusion of the material acts on the fixed Can rotate at the same speed and in the opposite direction. When the material falls between the two extrusion rollers from the feeding port, it is crushed by the two rollers and squeezed into a dense roller c take for discharge.

The pulverization principle of high pressure roller mill

Compared with the traditional pulverization technology, the pulverization of the high-pressure roller mill is mostly quasi-static pressure pulverization. This pulverization method saves 30% energy consumption compared with the impact pulverization method, and the high-pressure roller mill can also pulverize the material layer.

…

Details can be accessed here: https://www.zymining.com/blog/working-principle-of-high-pressure-roller-mill.html

Between the tractor’s engine and the gearbox, there is a key component that can be used to separate the power from the engine crankshaft to realize the tractor’s parking and shifting. This is the protagonist of our article today: the tractor clutch, the overload protection function of the tractor clutch, can Make the starting of the tractor more stable.

As we all know, the clutch transmits torque by friction. The longer it is used, the more serious the friction damage will be. However, in the normal use of the tractor, the use of the tractor clutch is very frequent. If you do not pay attention to the tractor clutch repair, once the parts are worn out , resulting in the inability to transmit torque reliably, which will affect the normal use of the tractor. Therefore, we need to regularly troubleshoot the tractor clutch and deal with possible problems in a timely manner. Here, we will briefly talk about the tractor. When the clutch is repaired, the maintenance points of each component.

1. Maintenance of tractor clutch drive plate

The active disc of the tractor clutch, including the clutch pressure plate and the intermediate pressure plate, many manufacturers will use high-quality gray cast iron or ductile iron as the main raw material for these parts. The main damages of the active disc are mostly wear, scratches, burns and cracks on the friction surface; warpage and deformation of the friction surface; breakage of the lugs of the very engaging clutch, and increase of the bearing clearance due to wear; The pin fit gap is loose due to wear, the clutch cover is deformed or cracked, and the window hole is worn.

When the tractor clutch is repaired, the detection of the damage of the active disc is mainly based on visual inspection. The maintenance of the active disc mainly includes the following two points:

(1) If the clutch pressure plate has cracks, defects, or the thickness after grinding is smaller than the limit size, it should be replaced with new parts in time. If there are problems such as ablation, cracking or wear groove depth exceeding 0.5 mm on the surface, or when the plane tolerance exceeds the service limit, the clutch pressure plate can still be used after being smoothed by polishing.

(2) When the matching clearance between the driving disc and the transmission pin is greater than 1.00-1.50 mm, it should be repaired in time.

…

Details can be accessed here:https://www.syclutch.com/news/tractor-clutch-repair.html

Concrete mixer trucks are commonly used construction vehicles on construction sites. In terms of maintenance and repair, in addition to meeting the requirements of relevant departments, it is also necessary to do a good job in the maintenance of concrete mixer trucks based on the actual situation of the vehicle.

Maintenance measures for concrete mixer trucks include:

1. Before the concrete mixer truck runs, it is necessary to conduct a comprehensive inspection of the vehicle, mainly to judge whether the components are normal and reliable, whether the bolt connections are tight, and whether the operation is flexible.

2. Whether the lubrication points of various parts are lubricated in time, and whether the refueling places are kept clean.

3. Check whether the hydraulic system and pneumatic system pipelines are not tightly sealed, worn, oil leakage, air leakage, etc. If there is any problem, it should be eliminated in time.

4. The hydraulic pump, hydraulic motor, deceleration bender and other components of the concrete mixer truck should be regularly inspected and maintained according to the requirements of the product manual.

5. Regularly check the operation of the mixing blades of the mixer truck. When there is wear, it should be repaired in time.

6. According to the different service life of the concrete mixer truck, the maintenance of the reducer should be carried out according to the following steps:

(1) Oil change: When the reducer is used for the first time, the oil needs to be changed after 500 hours. After that, the oil should be changed every 1500 hours of operation. After the reducer has been used for one year, no matter how long it has been working, the oil should be changed.

(2) Oil products: The reducers used in concrete mixer trucks are mostly imported reducers, and the gear oil used is mostly GL-5 gear oil for heavy vehicles, with a viscosity grade of 85w/140.

(3) Recommendation: When changing the oil, make sure that the oil temperature is around 60 degrees. After the oil change is completed, it is necessary to check whether the connecting bolts are still tightened. The oil level needs to be checked weekly.

…

Details can be accessed here: https://www.ly-cimc-linyu.com/a/news/Concrete-mixer-maintenance.html