Even if the cast iron T-slot platform is a power frequency induction furnace with strong stirring power, the carburization operation cannot be ignored. This is because, from the schematic diagram of the induction furnace smelting of the cast iron T-slot platform, it can be seen that there is a stirring iron flow separated from the top and bottom in the cast iron T-slot platform induction furnace, and there are still dead corners near the furnace wall at the boundary of the graphite group that stays on the furnace wall and adheres to the molten iron, which cannot be melted into the molten iron without excessive heating and long-term thermal insulation. Excessive heating and long-term heat preservation of molten iron on the T-slot platform of cast iron will increase the supercooling degree of molten iron, and there is a tendency to increase the whitening of cast iron.
Solvent-diluted anti-rust oil: This anti-rust oil is rich in solvents that can evaporate, and the solvent evaporates after the coating, forming a uniform maintenance film and corroding maintenance. The maintenance film composed of solvent diluted hard film antirust oil has a certain mechanical strength, not easy to break, non-sticky dust, good rust resistance is used indoors and outdoors, suitable for anti-rust maintenance of large and medium-sized equipment with simple shape, because it is rich in evaporative flammable solvents, do not pay attention to fire prevention when using cast iron T-groove platform, apply anti-rust water to anti-rust, individually used for sealing, anti-rust water preparation, go when the molten iron is poured into the sand mold, to ignite the exhaust gas discharged from the steam hole, riser and box crack at any time, so as not to hurt people by splashing poisonous gas and molten iron. When casting a cast iron T-groove platform, the remaining molten iron should be poured into the prepared iron mold or sand pit, and it is not allowed to be poured on the sand pile and the ground to prevent molten iron injury. The molten iron flowing on the ground due to fire or other reasons shall not be covered with sand before solidification, and shall be timely after solidification.
Therefore, in the case of high proportion of scrap steel in the cast iron T-slot platform and a lot of recarburizer, it is necessary to pay attention to the addition of recarburizer to the cast iron T-slot platform. The addition time of the recarburizer cannot be ignored. If the addition time of the recarburizer is too early, it is easy to adhere to the furnace bottom, and the recarburizer attached to the furnace wall is not easy to be melted into the molten iron. On the contrary, if the addition time is too late, the opportunity for carbon addition is lost, resulting in a sluggish smelting and heating time. This not only delays the analysis and adjustment of chemical composition, but also has the potential to cause harm due to excessive heating. Therefore, it is better to add the carburizer little by little in the metal furnace.
The requirements and principles of use of the core brace when the cast iron T-groove platform is fixed: the sand core is fixed in the sand mold mainly by the core head, when the core head cannot be set, or the core head alone is not grasped, the core brace must be used to play the role of auxiliary support, the surface of the core brace is galvanized and lead, which is to prevent the core brace surface of the cast iron T-slot platform from rusting and can not be reconciled with the molten iron. The surface of the core brace should be clean and flat. When using, the surface of the core brace should be free of oil, water vapor and dirt, and at the same time, after the core brace is put into the casting mold, it should be poured as soon as possible, not wet, so as to avoid the condensation of water vapor on the surface of the core brace of the cast iron T-slot platform and produce porosity or poor fusion.
The deformation of the cast iron T-slot platform cannot be prevented in the process of flipping and mutual research. Cast iron T-slot platform manufacturers generally plan lifting holes on the cast iron T-slot platform, and its appearance can prevent the deformation of the cast iron T-slot platform, and the cast iron T-slot platform can be processed on the working surface of the V-shaped, T-shaped, U-shaped groove and round holes, long holes, etc. No matter how the cast iron T-slot platform is planned, both ends of the plane should be planned to be able to make the cast iron T-slot platform be hoisted during transportation.
In order to prevent the deformation of the cast iron T-slot platform series during hoisting, the four lifts on the cast iron T-slot platform should be tied together with wire ropes, and the cast iron T-slot platform should be smoothly installed on the transport vehicle. The four support points of the cast iron T-slot platform should be padded to make it healthy.