Carbon deoxidation technology of alloy structural steel TOCT4543-1971
Carbon deoxidation is a process of reducing the carbon content of steel by means of oxidation-reduction reactions. It is also referred to as deoxidation, deoxidation and deoxidation. Carbon deoxidation involves the removal of carbon from steel by oxidation. The process can be catalyzed by different metals, such as manganese, iron, silicon and aluminum. There are several processes for carbon deoxidation, such as open-hearth deoxidation and the vacuum deoxidation process.
TOCT4543-1971 specifies the procedures for the carbon deoxidation of alloy structural steel. According to the regulations, the operating conditions for the process should be carefully controlled as too rapid cooling will cause micro-cracking in the steel at the grain boundaries. This process should also be conducted under conditions of no oxygen.
The deoxidation requirements of the material are specified in detail. The alloy structural steel, whose nominal chemical composition is divided into two groups, should be deoxidized according to the deoxidizing agent. The two groups are ferrite-austenite and martensite-austenite. The ferrite-austenite type steel should be deoxidized according to the requirements specified in the standard. The martensite-austenite type steel should be deoxidized by adding manganese-containing deoxidizing agents.
The chemical composition, mechanical properties and surface quality of the steel after deoxidation must be tested and inspected to meet the requirements specified in the standard. The chemical composition of the steel should be tested for oxygen content and carbon content. The mechanical properties should be measured for tensile strength, yield strength and elongation. The surface quality of the steel should be inspected for the presence of any faults or defects.
In conclusion, TOCT4543-1971 specifies the requirements for the carbon deoxidation of alloy structural steel. The process should be conducted under carefully controlled conditions and the deoxidation requirements of the alloy structural steel should be met. The mechanical properties of the steel should be tested and inspected with respect to the requirements specified in the standard. Any defects or faults found in the surface quality must also be inspected.
