Specific requirements for the production of forging products in Haokun factory
Shanxi Haokun Flanges Group Co., LTD forging raw materials usually have ingot and billet two categories. The ingot is cast directly from the smelting of molten steel. Due to the rough organization and many defects, it is only suitable for the free forging of various large and medium-sized forgings or rolled into various types of billets. The ingot can be divided into three parts: outlet, middle and bottom. Because of the large number of irreparable casting defects in the mouth and bottom, it can not be used for forgings, so only cut back to the furnace. The thermal conductivity of the various carbon steels decreases with the increasing temperature before the temperature rises to 800-850℃. When this temperature is exceeded, it increases slightly. The thermal conductivity of general alloy steel increases with the increasing temperature. The thermal conductivity of chromium nickel high alloy steel increases significantly with the temperature. The formation of the forging is every process is very strict, the forging is formed through the metal is applied by the pressure, in the process of strong pressure needs to change its physical characteristics, for the pressure of the casting is also very important! This force is formed by a hammer or a strong pressure. The demand for forgings is also very sophisticated, with each piece consistent without porous, inclusions or other flaws. The advantages of the forging are extensible length; extensible length, extensible cross section; modifiable length, modifiable cross section According to the importance of forgings, the amount of the mouth resection is 20% to 30%, and the amount of bottom resection is 3% -10%. The specification of steel ingots is generally between cubic kg of 10 in (0.25-50). The shape is generally cast into the section cone, the upper end is larger, the lower end is small, the length is generally 2-3 times of the section size. The cross-section can be square, round, octagonal, etc. The thermal conductivity of the forging material depends on its own chemical composition and the heating temperature and heating method. Generally speaking, the higher the carbon content, the worse the thermal conductivity; the more the alloy element content of alloy steel, the worse the thermal conductivity is. The thermal conductivity of alloy steel is worse than that of carbon steel.
