New method for heating installation of bearings in equipment repair

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New method for heating installation of bearings in equipment repair

Source: China Bearing Network Time: 2017-12-13
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There are two common ways to replace bearings: one is to directly heat the bearing with acetylene oxygen, the other is to use oil immersion heating for small bearings; to reach thermal expansion; to expand the inner diameter of the bearing; to install. These methods are long Time equipment repair has been widely used; fundamentally satisfied and dealt with the bearing installation problems in equipment repair. But these two methods can ensure that the temperature value of the heated area of ​​the bearing in the heating process can be uniform; it is difficult to determine. The traditional acetylene oxygen heating is a single gas burner; and the heating process is only experienced; the temperature of the heated bearing is added to the extent that it is difficult to grasp. The temperature is too high; the bearing will be annealed; the bearing of the bearing will be lowered. Performance, temperature is too low; thermal expansion value is not good; difficult to install. In equipment repair; repairers sometimes do not heat the bearings; bearings can not be installed in the correct orientation; must be forced to reload; then increased labor intensity. To this end; we have proposed a new way to change the traditional heating of the bearings.
1. Electric heating instead of acetylene oxygen heating. The plane electric furnace is depicted as a cylindrical electric furnace; named as the electric heater of the bearing; as shown in Figure 1. According to different bearing inner diameter can be described as different power and standard bearings Electric warmer (the best range of application is in the bearing inner diameter φ300mm/above). This heating equipment has the following advantages: uniform heat radiation, stable and stable; smoked dust on the outside of the heated bearing, hygienic and clean; easy to measure and control the bearing temperature.
1. Bracket 2. Bolt and nut 3. Iron liner 4. Inner gear ring 5. Refractory cylinder 6. Outer retaining ring 7. Electric heating wire 8. Iron liner 9. Refractory cylinder 10. Sliding bearing bracket bearing electric heater Figure 2. The infrared thermometer is used to monitor the temperature of the heated bearing. The heating value of the bearing installation is usually controlled at 100 °C ~ 120 °C. Within this temperature value; the thermal expansion value of the bearing steel is the largest; easy to install the bearing; this temperature The value does not change the mechanical properties of the bearing; and the reliability is high.
In summary, the bearing electric heater is superior to the traditional acetylene oxygen heating; it is a useful method to improve the installation accuracy and working efficiency of the bearing and reduce the labor intensity.
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peptone Basic Information
CAS: 73049-73-7
MF: C13H24O4
MW: 244.32726
EINECS: 615-895-9
Mol File: 73049-73-7.mol

Peptone Structure

peptone

Peptone Chemical Properties
solubility H2O: 50 mg/mL
form powder
color Dark cream powder
Odor Odorless
PH 6.5-7.5 (2% in H2O)
Water Solubility Soluble in water. Insoluble in alcohol.
Sensitive Moisture Sensitive & Hygroscopic
EPA Substance Registry System Peptones (73049-73-7)

Peptone CAS No.73049-73-7

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