Deformation control measures of steel plate cutting parts.

Deformation control measures of steel plate cutting parts:

1. Professional TMCP

The new TMCP specialty refers to the final rolling temperature ≥950℃ to the continuous high pressure under the cold, and then the cooling speed to achieve 300~400℃/s of ultra-fast cooling process.

Steel plate cutting parts adopt new technology of TMCP carbon steel plate, the large deformation of judgment growth keeps the austenitic stainless steel, stainless steel plate sclerosis to ultra fast cooling, and then make the hardening of the austenitic stainless steel stainless steel plate as "frozen", on the other hand the ultra fast cooling promoted the 20 nm, fine particulate matter under many fusion, with the reduction of the ultra fast cooling temperature further dispersed particles throughout. Due to the ultra-fast cooling, the nucleation rate is improved and the ferrite crystallization is promoted. The supercooling condition is kept near the change point to stop cooling, and then the relative path control of cooling is carried out to obtain the carbon steel plate with excellent characteristics. In addition, under normal temperature, the growing amount of dislocation is dragged and dissolved at high temperature, releasing the stress field from the energy state.

2, cooling temperature, laminar flow cooling caused by welding stress imbalance is mainly caused by three kinds of uneven cooling; (1) the transverse cooling situation is seriously uneven; Thickness direction cooling is not the same; Uneven mixing of cooling in transverse and thickness directions.

Controlling the horizontal uniformity of cooling and the symmetry of thickness direction is the necessary condition to control the flatness of plate and reduce the welding stress. The transverse cooling side jet plan is based on the improvement of the horizontal Angle of the lower collector and the water standing point and other preventive measures to ensure the layer. Flow cooling temperature control uniformity.

3, cold straightening, correction can improve residual stress field in carbon steel plate, when the carbon steel cross section stress field in uneven, adopt the method of improve the part deformation Compensation uneven longitudinal fiber length, eliminate the undulating curved, ensure that carbon steel welding stress homogenization, the purpose of adjusting straightening machine side carbon steel plate crown is also improve the thermal stress in the important measures to prevent.