The cutting nozzle should be vertical to the surface of the steel plate, otherwise the cutting parts will appear size error. At the same time, it should be noted that parts prone to deformation should be placed in the middle of the ASTM A36 placa de acero steel plate, and enough distance should be set aside between the parts. The last is to choose a reasonable cutting order, choose the right location of the perforation point to prevent the deformation of the cutting parts.
Q420GJC belongs to steel plate for building structure, referred to as building Steel. ASTM A36 placa de acero, Q420GJC is suitable for manufacturing high-rise building structures, large-span structures and other important building structures with a thickness of 8-100mm steel plate. Q420GJC steel plate is delivered in hot rolled, normalized, normalized and tempered state.
Phosphorus element (P element) is brought into steel by ore. Generally speaking, phosphorus is also harmful element. Although phosphorus can increase the strength and hardness of ASTM A36 placa de acero etc. steel, it also causes the decrease of plasticity and impact toughness. Especially at low temperature, it makes steel significantly brittle, which is called "cold brittleness". The higher the phosphorus content is, the greater the cold brittleness is. Therefore, the phosphorus content in ASTM A36 placa de acero etc. steel is strictly controlled.
The ASTM A36 placa de acero steel making furnace can only be used as primary refining, and the refining needs to be completed in the refining equipment outside the furnace, which is also called secondary refining. It is mainly through decarburization, desulfuration, denitrification and dephosphorization to improve the cleanness of the steel, to establish a chromium molybdenum low alloy steel with good oxidation resistance and high temperature strength, to remove unwanted harmful impurities from the steel, and to improve the ASTM A36 placa de acero internal quality of the steel.
