News Date:2018-04-03
In the ball mill equipment, the hollow shaft is a very important part. In operation, it bears the whole load of the grinding body and the grinding body, and continuously operates under the action of alternating stress. Therefore, the hollow shaft in the actual production requires a good overall mechanical performance, no shrinkage, shrinkage, air eye, sand and other casting defects, high technical requirements.
A scientific and rational process plan can improve the overall quality of the product and increase the product's production efficiency. The key to ensuring the quality of castings is to determine a correct set of process solutions.
Great Wall cast steel uses ZG230-450 material according to the work environment and operating characteristics of the hollow shaft of the ball mill, and optimizes the production process of the hollow shaft of the ball mill. The production of the hollow shaft has reliable performance and can well meet the long-term operation of the ball mill.
Great Wall Cast Steel Ball Mill Hollow Shaft Process Flow
1) Simulation and Modeling
Before each hollow shaft is cast, Great Wall cast steel must use Huaying CAE software to carry out digital simulation of the casting process. Process analysis and quality prediction of the molding process of the product are performed through numerical simulation technology, and the process optimization of hollow shaft casting is completed. ;
The auxiliary set of metallurgy is complete, the overall size is well controlled, and the water glass sand molding process can prevent the occurrence of hot cracks in the steel casting.
In addition, the Great Wall cast steel adopts the shape of a pit, which is not affected by seasonal changes and has high production efficiency.
2) Pouring, heat treatment
The qualified raw and auxiliary materials will be smelted in an electric arc furnace according to the proportion. To purify the molten steel, the Great Wall cast steel will transform the molten steel package and argon steel refining will be performed on the molten steel.
The hot metal was sampled for spectral analysis. After passing the test, the casting was performed according to the principle of “low-temperature fast pouring”, and the casting time and pouring temperature were recorded.
3) flaw detection and finishing
Finally, cut the riser, flash, etc. Specialized grinding finishing team, large-scale shot peening equipment, effectively improve the appearance quality of the hollow shaft, make its surface finish meet customer requirements, and apply advanced inspection equipment to perform non-destructive testing on each hollow shaft to ensure the internal quality of the hollow shaft Strictly prevent any defective products from leaving the factory.
The hollow shaft produced by Great Wall Cast Steel in accordance with the above process has high hardness and strong impact resistance, which ensures the stability of the component under long-time operation and prolongs the service life of the hollow shaft.
Great Wall Cast Steel can custom-process the hollow shafts with a weight of 5 to 30 tons on the ball mill. During the casting process, it pays attention to the working environment of the processing workshop and strives to cast safe, healthy and environmentally friendly machined steel castings!
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