2 Piece Forged Wheels Two Sprocket Center Distance
2 Piece forged Wheels Two sprocket center distance
1, sprocket forging tightness should be appropriate, too tight will increase the power consumption, easy to wear bearings; too loose sprocket easy to beat and off the chain. Sprocket tightness: from the middle of the sprocket lift or press, about two sprocket center distance of 2% -3%.
2, the sprocket mounted on the shaft should not swing and skew. In the same drive assembly, the end of the two sprockets should be located in the same plane, the sprocket center distance of 0.5 meters below, you can deviate by 1 mm; sprocket center distance of 0.5 meters or more, can be 2 mm deviation. But can not have a friction sprocket teeth side of the phenomenon, if the two rounds are too large prone to off-line and accelerated wear. When checking sprockets, care must be taken to check and adjust the offset.
3, sprocket wear serious, should also replace the new sprocket and the new sprocket to ensure good engagement. You can not replace the new sprocket or the new sprocket separately. Otherwise it will cause poor engagement to accelerate the wear of new sprockets or new sprockets. Sprocket tooth surface wear to a certain extent should be used in time to turn (referring to the use of the sprocket), to extend the use of time.
4, the new sprocket is too long or elongated after use, it is difficult to adjust, you can see the situation to remove the link, but must be even. The link should pass through the back of the sprocket, the locking tab is inserted outside, and the opening of the locking tab should be in the opposite direction of rotation.
5, sprocket in the work should be timely filling the oil. Lubricants must enter the clearance between the rollers and the inner casing to improve working conditions and reduce wear.
6, the old sprocket can not be mixed with some of the new sprocket, or easy to produce shock in the drive, pull off the sprocket.
7, the machine long-term storage, the sprocket should be removed with kerosene or diesel cleaning, and then coated with oil or butter stored in a dry place.
The forging normalization is carried out by heating to a point of time above A3 or Acm at 40 to 60 ° C for a period of time so that the forging tissue becomes a homogeneous austenitic structure and is cooled to room temperature by heat treatment in a still air. For eutectoid steel, the purpose of grain refinement can be obtained with good strength and toughness; for Eutectoid steel, it can prevent the snow carbon steel in the austenite grain boundaries on the formation of reticular Precipitation, to reduce the toughness of low-forging materials. The main purpose of the complete annealing of the forging is to soften the steel and improve the machinability of the steel. The heat treatment procedure is such that the heat treatment is heated to above the temperature of A3 ~ 20 ~ 30 ℃ (hypoeutectoid steel) or above the A1 point of 30 ~ 50 ℃ for a period of time After the formation of complete austenite (or austenite plus snow-white body), in the A1 point below 50 ℃ to make the full wave of metamorphosis, to soften the forging. In addition, the stress relief annealing is below the perverted point 450 ~ 650 ℃ heating for some time after the cool to room temperature, can eliminate the steel within the cutting, stamping, casting, welding process generated by the residual stress.