After the mixer has been used for some years, how should we deal with the crack on the head of the mixer to extend the service life of the tank body of the mixer, so that our mixing tank can continue to be used.
Cracks are just like this. In this case, the solution is to make a reinforcing ring on the head of the mixer truck, which is generally known as a circular iron plate, welded on the head of the mixer truck to play a reinforcing role.
This is the stiffening ring. The stiffening ring should be cut according to the crack size of the small mixer truck, so as to cover the crack. We need to use gas shielded welding instead of special welding wire to weld. Through this method, the crack phenomenon of the mixer head is basically solved, so that the mixer can continue to use.
While solving the problem, we should know the cause of the problem:
The mixer head is made by cold processing. According to different shapes, some of them will encounter various problems in the process of production and use. One of the most serious problems is the cracking of the spinning head. What is the reason? Generally speaking, chemical composition, processing deformation and welding are the direct causes of cracks.
1、 Effects of chemical composition. According to the calculation of relevant data formula, the △ value of 316310 is+1.00 and+4.72 respectively, so it is very stable and not easy to crack.
2、 Influence of processing deformation. During the cold spinning process of the head, the deformation of the material is relatively large, and the flanging part can reach more than 40%. According to the relevant data, the effect of cold working of Cr-Ni oil tank on the permeability results in that the content of martensite decreases with the increase of chemical composition and increases with the increase of cold working deformation rate. When the deformation rate of 304 and 321 is about 15%, the increase of martensite accelerates 316. When the deformation rate is 60%, the increase of martensite is not obvious.
3、 Effect of welding. Under the principle of equal strength, the grain growth in the welding heat affected zone of the welding process will reduce its plasticity, and the sharp notch in the welding defect will be pulled and cracked during the spinning process, which will make its performance lower than that of the base metal and cause cracks first.
After knowing the root cause of the problem, we should pay attention to these conditions in daily use to avoid cracking of the head of the small mixer truck. Consult us for more information http://www.zkzsljbc.com Come on!