Sheet metal processing industry with the continuous improvement of people's living standards, the industry is also increasingly high technology, whereby the scope of sheet metal processing applications is growing, but it is because of the high demand for sheet metal processing, its quality has become a top priority. Because of its high yield, bring a lot of additional problems, such as increased workload led to a product error rate increase, the problem parts will increase, but the main reason for this situation is: the deformation of sheet metal parts and sheet metal processing rebound is not enough to solve this problem, I share with you some ways to deal with their own sheet metal parts deformation, hope to help you:
For a lot of sheet metal processing, it because a lot needs to be done for the sheet metal processing, especially in parts of the cooling process, the type of sheet metal processing quenching medium, cooling performance, hardened, etc. and deformation related. Change of the cooling performance can be achieved by changing the viscosity of the medium, temperature, pressure level, the use of additives, and stirring is adjusted. Quenching oil viscosity, the higher the temperature, the smaller oval deformation. In the stationary state, the deformation is small.
Forged in the heat treatment, the reduction of the deformation of parts placed way, a possible vertical hanging;. 2 vertically on the bottom of the furnace; 3 with two levels of support, the fulcrum is in third position with four full-length between one-half; 4 flat on the heat-resistant steel tooling.
Sheet metal processing is reduced by reducing the quenching liquid quenching medium pressure, thereby extending the vapor film stage, the cooling rate decreases the high temperature zone, the cooling rate of each part of the homogeneous part. First part from the quenching temperature of the oil is cooled to a temperature slightly above the Ms point, and then released, maintained in an atmosphere so that the overall temperature uniformity of parts, and then oil-cooled, so that uniform conduct martensitic transformation, deformation irregularities greatly improved.
The following can effectively reduce the deformation of sheet metal processing: bath quenching; hot oil quenching; vacuum quenching; a three-stage quench tank. And high-temperature oil bath quenching quenching similar, are at the transition temperature quenching martensite increases uniformly martensitic transformation. Therefore, the operation should be very cautious.
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