What is the cause of cracks in weather-resistant steel plates

September 22, 2023

Laser Cutting weather resistant steel plate? Because the strength of the chromium carbide regolith is too high, cutting with oxyacetylene laser is very difficult. The actual effect of oxyacetylene laser cutting ultra-thin 44 or 64 thick steel plates is not ideal. What if the thick steel plate is thickened?

There are two ways:

The first application of plasma cutting machine or fiber laser cutting, laser cutting edge all normal, small dimensional tolerances. It is a common automatic cutting machine for manufacturers, and the laser cutting rate is also fast.

The second method uses carbon arc gouging and automatic manual production of goods. Laser cutting part will have large flatness and dimensional tolerances, and the actual operation will be complicated. If the on-site construction and dimensional tolerances are not high, this type of method can be used.

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If there are precision regulations, laser cutting must be ground on the CNC grinder, or according to customer regulations such as customized deep processing, the cost will also increase.

Sha Tin 16CuCr weathering steel plate how can crack

Sha Tin 16CuCr weathering steel plate caused by cracks is strength, hydrogen utility, welding methods and other factors are caused by cracks. In fact, cracks are not easy to harm the wear resistance of thick steel plates, and the quality will not be harmed, which is all normal conditions.

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Why:

1. The key to the initial hardening trend of weather-resistant steel plates is the composition, sheet thickness, welding methods and refrigeration standards. The greater the hardening trend of steel, the more likely it is to cause cold cracks.

2. The effect of hydrogen and hydrogen is one of the key elements of aging resistance and cold crack resistance of extremely high compressive strength Shatin 16CuCr weathering steel plate, and has the characteristics of delay time. The higher the hydrogen composition of the high toughness weathering steel plate, the stronger the crack sensitivity.

Laser cutting weathering steel plate and crack cause

3. Aging resistance to ground stress: The tendency of Shatin 16CuCr weathering steel plate to cause delay time cracks lies not only in its hardening trend and the effect of hydrogen, but also in aging resistance to ground stress. The key ground stresses of weather-resistant Shatin 16CuCr steel plate are: welding stress caused by uneven heating and cooling, structural ground stress caused by changes in metal materials, and structural self-restraint.