The use of thermal exchanger can always monitor the bearing temperature
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Quenching crack deep and long, straight fracture, fracture surface without oxide color.
It is often the bearing rings on the longitudinal crack straight or circular crack; in ball bearings on the shape of the S shaped, T shaped or ring. Quenching crack propagation characteristics of the organizations on both sides without decarburization phenomenon, the obvious difference with forging crack and crack. edabearing parts during heat treatment, a thermal stress and structural stress, the stress can be overlapped or partially offset, is complex and changeable, because it can change with the heating temperature, heating rate, cooling method, cooling rate, the shape and size of the parts is changed, so the heat treatment deformation is inevitable. To know and master the change rules of it can make the deformation of bearing parts (such as ring size elliptic, later) in controllable scope, favorable to the production of. To know and master the change rules of it can make the deformation of bearing parts (such as ring size elliptic, later) in controllable scope, favorable to the production of. Of course, mechanical collision during heat treatment also makes the part deformation, the deformation can be reduced and avoid using improved operation.
Bearing parts in the process of heat treatment, if the heating in oxidizing medium, surface oxidation occurs so that the quality of fractional parts of the surface carbon reduction, causing surface decarburization. The surface decarburized layer depth over the machining allowance will make the scrap parts. Determination of surface decarburized layer depth in metallographic examination of metallographic and hardness method available.
The surface microhardness distribution curve measurement method is accurate, can be used for arbitration criterion. The surface microhardness distribution curve measurement method is accurate, can be used for arbitration criterion. Due to the heating problems, poor cooling, quenching caused by improper operation causes of edabearing parts local surface hardness is not enough of the phenomenon known as the quenching soft spot. Serious decline it to surface decarburization can cause surface wear resistance and fatigue strength.
The temperature of the bearing with bearing running slowly rising, reach a steady state after 1-2 hours. The normal temperature of the bearing is due to the heat capacity, the machine heat dissipating capacity, speed and load and different.
If the lubrication, improper installation, bearing temperature will rise rapidly, there will be abnormal high temperature, then we must stop, take the necessary preventive measures. If the lubrication, improper installation, bearing temperature will rise rapidly, there will be abnormal high temperature, then we must stop, take the necessary preventive measures. And when the temperature exceeds the specified value alarm or stop to prevent burning shaft accident.
High temperature and harmful to the bearing lubricant.
Sometimes the edabearings overheating can be attributed to the bearing lubricant. If the bearing at the temperature higher than 125 DEG C - even move to reduce bearing life. Cause of high temperature bearings causes include: insufficient or excessive lubrication lubrication, lubricant contains impurities, heavy load, bearing damage, lack of space, and oil have high friction etc.. Cause of high temperature bearings causes include: insufficient or excessive lubrication lubrication, lubricant contains impurities, heavy load, bearing damage, lack of space, and oil have high friction etc..
Therefore continuity bearing temperature monitoring is necessary, whether measured or other important parts of the bearing itself. If it is in operation under the same conditions, any temperature changes may have trouble.
Regular weight bearing temperature can be measured with the help of the thermometer, such as digital thermometer, temperature can be accurately measured bearing and in C or Fahrenheit temperature display unit.
The importance of the bearing, means when it is damaged, will cause the equipment downtime, so this type of bearing is best equipped with temperature detector.
Under normal circumstances, bearing lubrication and lubrication on or after natural temperature rises and the last one to two days.
Usually, the edaoperating temperature of the bearing is used in more than 150 ° is called high temperature bearing, the chromium bearing steel in the temperature exceeds 150 °, its hardness will decline sharply, size is not stable, so that the bearing can not work normally. So for the working temperature of 350 DEG to the bearing working conditions at 150 degrees, if the rings and rolling bodies still use ordinary high carbon chromium bearing steel manufacturing, it is necessary to make special bearing parts tempering, tempering temperature in general should be higher than 50 °. Bearing steels after tempering treatment according to the above requirements, can be used in operating temperature. But because the back
234407BM 234706BM 234406BM 517/2860V/YA 5610/2500 517/1720X1V 527/1181M 510/1180M 517/930 510/670 590/560 510/500 52780 59080 517/368M 51760U 517/238 6207-2ZN 6206-2ZN 6205-2ZN 6204-2ZN 6203-RZ 6203-2ZN 6202N 6202-2ZN 6201-2ZN 6200ZZ 6200-2ZN 62/32-ZN 62/32-Z 62/32N 62/32-2Z 62/32-2RZ 62/32-2RS 62/28-2RZ 62/22-2RZ 61996 61992 61988 61984
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Bearing parts rough mouth can be observed on the microstructure after quenching overheating. But make sure the overheating degree must observe the microstructure. If the coarse acicular martensite in quenching microstructure of GCr15 steel, is overheated tissue. The cause may be the quenching heating temperature is too high or the heating time is too long cause overheating; also may be due to the original organization banded carbide serious, low carbon zones in between the two belts formed local martensite acicular coarse, local overheating. The residual austenite increased overheating organization, dimensional stability decreased. Quenching due to overheating, crystal thick steel, will lead to a decline in parts of the toughness, reduce the impact resistance performance, edabearing life is also reduced. In short, the causes of cracks caused by hardening may be one or more of the above factors, the existence of internal stress is the main reason for the formation of quenching crack.Quenching crack deep and long, straight fracture, fracture surface without oxide color.
It is often the bearing rings on the longitudinal crack straight or circular crack; in ball bearings on the shape of the S shaped, T shaped or ring. Quenching crack propagation characteristics of the organizations on both sides without decarburization phenomenon, the obvious difference with forging crack and crack. edabearing parts during heat treatment, a thermal stress and structural stress, the stress can be overlapped or partially offset, is complex and changeable, because it can change with the heating temperature, heating rate, cooling method, cooling rate, the shape and size of the parts is changed, so the heat treatment deformation is inevitable. To know and master the change rules of it can make the deformation of bearing parts (such as ring size elliptic, later) in controllable scope, favorable to the production of. To know and master the change rules of it can make the deformation of bearing parts (such as ring size elliptic, later) in controllable scope, favorable to the production of. Of course, mechanical collision during heat treatment also makes the part deformation, the deformation can be reduced and avoid using improved operation.
Bearing parts in the process of heat treatment, if the heating in oxidizing medium, surface oxidation occurs so that the quality of fractional parts of the surface carbon reduction, causing surface decarburization. The surface decarburized layer depth over the machining allowance will make the scrap parts. Determination of surface decarburized layer depth in metallographic examination of metallographic and hardness method available.
The surface microhardness distribution curve measurement method is accurate, can be used for arbitration criterion. The surface microhardness distribution curve measurement method is accurate, can be used for arbitration criterion. Due to the heating problems, poor cooling, quenching caused by improper operation causes of edabearing parts local surface hardness is not enough of the phenomenon known as the quenching soft spot. Serious decline it to surface decarburization can cause surface wear resistance and fatigue strength.
The temperature of the bearing with bearing running slowly rising, reach a steady state after 1-2 hours. The normal temperature of the bearing is due to the heat capacity, the machine heat dissipating capacity, speed and load and different.
If the lubrication, improper installation, bearing temperature will rise rapidly, there will be abnormal high temperature, then we must stop, take the necessary preventive measures. If the lubrication, improper installation, bearing temperature will rise rapidly, there will be abnormal high temperature, then we must stop, take the necessary preventive measures. And when the temperature exceeds the specified value alarm or stop to prevent burning shaft accident.
High temperature and harmful to the bearing lubricant.
Sometimes the edabearings overheating can be attributed to the bearing lubricant. If the bearing at the temperature higher than 125 DEG C - even move to reduce bearing life. Cause of high temperature bearings causes include: insufficient or excessive lubrication lubrication, lubricant contains impurities, heavy load, bearing damage, lack of space, and oil have high friction etc.. Cause of high temperature bearings causes include: insufficient or excessive lubrication lubrication, lubricant contains impurities, heavy load, bearing damage, lack of space, and oil have high friction etc..
Therefore continuity bearing temperature monitoring is necessary, whether measured or other important parts of the bearing itself. If it is in operation under the same conditions, any temperature changes may have trouble.
Regular weight bearing temperature can be measured with the help of the thermometer, such as digital thermometer, temperature can be accurately measured bearing and in C or Fahrenheit temperature display unit.
The importance of the bearing, means when it is damaged, will cause the equipment downtime, so this type of bearing is best equipped with temperature detector.
Under normal circumstances, bearing lubrication and lubrication on or after natural temperature rises and the last one to two days.
Usually, the edaoperating temperature of the bearing is used in more than 150 ° is called high temperature bearing, the chromium bearing steel in the temperature exceeds 150 °, its hardness will decline sharply, size is not stable, so that the bearing can not work normally. So for the working temperature of 350 DEG to the bearing working conditions at 150 degrees, if the rings and rolling bodies still use ordinary high carbon chromium bearing steel manufacturing, it is necessary to make special bearing parts tempering, tempering temperature in general should be higher than 50 °. Bearing steels after tempering treatment according to the above requirements, can be used in operating temperature. But because the back
