There are three reasons for the surface wrinkle of HP325 steel plate:1.There are obvious banded structures in HP325 steel. Due to uneven cooling, the cooling ra
Controlled rolling is an important means to improve the strength and toughness of HP325 steel. It is widely used in industrial production because it has the fol
The main factors leading to the fracture failure of DH36 steel plate are the serious center segregation and center porosity of the slab, and the presence of abn
·Carbon
The key performance index of DH36 steel plate is the low temperature impact toughness of DH36 steel plate, which requires the impact energy at -2
DH36 steel plate is easily corroded by seawater in the marine environment, so measures need to be taken for corrosion protection. Commonly used anti-corrosion m
30CrMo steel is a heat-resistant steel with pearlite structure, which has high thermal strength (δb≥440MPa) and oxidation resistance at high temperatur
For the rolling of 30CrMo steel plate, the following standard requirements need to be met:
(1) Deviation requirements for thickness, width and length
The thickn
1. Cracks appear on the surface of 30CrMo steel after carburizing
Reason:
a.The concentration of surface penetration layer for 30CrMo steel is too high.
b.30CrM
Cooling of SG255 steel adopts two-stage cooling process. The degree of supercooling can be increased through a period of cooling. When SG255 steel is cooled to
In the manufacturing process, controlling the inclusions and gas content in SG255 steel is the key to welding steel cylinders, and the purity of SG255 molten st
There are many welding methods for gas cylinders, commonly used are electrode arc welding, submerged arc welding, argon tungsten arc welding, and melt inert-gas
In production and manufacturing, we often encounter the material 42CrMo4 mentioned in the drawings of European countries, it looks similar to 42CrMo. Whether th
42CrMo4 steel plate is a high-strength alloy steel plate, which is widely used in machinery manufacturing, aerospace, automobile manufacturing and other fields.
42CrMo4 steel has high strength, high hardenability, good toughness, small deformation during quenching, high creep strength and durable strength at high temper
The global economic recovery has led to an increase in demand for ST37 steel, driving up its price. As businesses and industries resume operations following pan
ST37-2 steel plate is a low carbon steel grade commonly used in structural applications. The fatigue strength of ST37-2 steel plate depends on several factors i
Pay attention to the following points when welding Q355GNH weathering steel:
1.Select the appropriate welding material and welding process. Q355GNH steel contai
·Good corrosion resistance: Q355GNH steel contains more copper, chromium, nickel and other alloying elements, which can form a dense passivation layer to
The continuous casting process is fully protected, and steel plate mold slag for container steel is added to the crystallizer.Q355GNH steel is prone to breakout
EH36 is a high-strength shipbuilding plate, which implements classification society standards: China CCS, American ABS, German GL, French BV, Norwegian DNV, Jap
The main factors affecting the toughness of the weld for EH36 Steel are: the chemical composition of the base metal, the plate thickness, the welding method of
The essence of the controlled rolling and controlled cooling process of EH36 Steel is to combine deformation and heat treatment. Its main purpose is to refine t
S275JR steel plate is the most common European steel plate material and has a wide range of uses. S indicates the grade of the European standard steel plate - 2
The way to control non-metallic inclusions in X70 pipeline steel is to reduce the generation of inclusions during the smelting and pouring process and the pollu
Do you know about the hot rolling and flaw detection of S275J0?Hot rolling of S275J0 steel plate:
S275J0 is usually delivered in hot-rolled state, while S275J0
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