How does the Slewing Gear adapt to the temperature and the working environment?
The Slewing Gear in the machinery industry is called "the joints of the machine", which is the relative rotational movement between the two objects, which can withstand the essential drive elements necessary for axial forces, radial forces, tipping moments.
Slewing Gear rail and gear heat treatment:
The Slewing Gear raceway is subjected to surface induction hardening, and the quenching hardness ensures that HRC55 to 62 can achieve sufficient depth of hardened layer.
Due to the need for transmission, the Slewing Gear is usually made of one of the rings. The heat treatment state of the gear is generally normal or quenched and tempered state. Tooth surface can also be quenched in accordance with the requirements of the user, quenching hardness HRC50 ~ 60, and can guarantee sufficient depth. According to the different applications, gear quenching can be divided into full-tooth quenching and single-tooth induction hardening. Single tooth induction hardening can be divided into tooth surface tooth root quenching and tooth surface quenching.
Slewing Gear to adapt to temperature and working environment:
Slewing Gear can work in -300C ~ +700C, the user needs to adapt to lower or higher temperature Slewing Gear, our company can carry out special design. If the Slewing Gear is used in particularly harsh environments, such as maritime climate, dust or abrasive particles, dust, cement, pulverized coal and so on. Special seals, protective devices, and suitable oil trails must be used. So in order to make your bearing a normal role, want to do routine maintenance and maintenance work.
When the anti-rust treatment of the Slewing Gear is carried out, the surface should be thoroughly cleaned, and it is necessary to select the appropriate method depending on the nature of the surface of the rust-preventive surface and the conditions at that time. In general, the cleaning is divided into solvent cleaning method, chemical treatment cleaning method and mechanical cleaning method.
After cleaning, you can use the filter dry compressed air to dry, or use 120 degrees to 170 degrees dryer dry, you can also use a clean gauze to dry.
Finally, the Slewing Gear must be coated with a layer of effective anti-rust oil, you can for some of the smaller Slewing Gear can be used to soak the way, the surface of a layer of anti-rust grease, through the anti-rust grease Temperature and viscosity to achieve the purpose. Brush method and spray method for some of the larger Slewing Gear type, but should pay attention to brush when the accumulation should not occur to prevent leakage coating. Spray method must be used when the perfect fire and labor protection measures.
So why the hands of perspiration will cause metal corrosion it? Human sweat is a colorless transparent or slightly yellow and with a certain salty weak acid liquid, the PH value of 5 to 6. In addition to containing sodium, potassium, calcium, magnesium, but also contains a small amount of urea, lactic acid, citric acid and other organic acids. When the sweat and metal contact, the metal surface will form a layer of sweat film, which will cause a chemical reaction to the metal, and the rotation of the metal caused by corrosion caused by the two-axis rotation.
Installation of the Slewing Gear surface to keep clean, and the excess of the above materials such as paint residue, beads, burrs and other cleaning, but also to ensure that the installation surface is dry, no lubricant. Specifically, to maintain the mounting surface of the mounting surface roughness is not greater than Ra = 12.5,6.3μm. In order to avoid the installation plane roughness or bearing deformation caused by biaxial rotation drive partial overload, circumferential flatness error in any 180 There is only one wave in the range, and the change is gentle.