How to deal with disk rake surface problems?

Disc harrow absorbs the advantages of similar foreign advanced products, according to the standard design, the whole machine adopts modular structure ,  the overall rigid harrow as the main body , equipped with hydraulic landing gear , spring leveling mechanism  and disk  harrow  dedicated  Spherical ball  bearings within  the spherical  spherical bearing , disc harrow with a reasonable structure ,  durable, easy transport, small radius of rotation ,  easy to adjust ,  maintenance  and so on.  Harrow  blade is the main core of the disc harrow, an important factor  in the level of disc harrows,  we will look at it below:

Uneven hardness Depositing, the disk harrow by ten welding layer thickness  unevenness may cause uneven hardness . Hard coating area is usually ten carbon carburizing, that is  , the operator of the oxygen-acetylene flame flame core into the molten cladding or the inner flame  of the flame than  the  length of the big 3: 1 caused. The area where the hardness  of  the cladding layer is lower is usually the result of the incorporation of the ten matrix metal into the cladding layer .

Crack. Low preheating temperature before welding, poor welding process control (  temperature drop too fast ) and rapid cooling after welding. Are easy to  make the weld layer cracks. Therefore, preheating and cooling before welding is a nickel-based  hard alloy oxy-acetylene flame welding  is an important feature.  In addition  disc  harrow operation diagram,  the quenched parts without  annealing are also prone to cracks. If the weld crack has spread into the base metal, the wheel needs to be cleaned of the  crack ( or removed by other machining methods).  According to the provisions of the preheating process, welding, slow cooling. If the crack does not spread to the base metal, the part can be reheated to eliminate cracks .