Cast steel products such as large gears, hollow shafts, slag tanks, slag pools, beams and bases are widely used in construction, metallurgy and mining industries, but the product specifications required by each customer are different. Some manufacturers provide one-stop services, have a complete production chain, and provide one-stop services from rough machining and rough machining to finished products. The whole casting process is controlled, the quality is guaranteed, and the delivery time is shorter, which saves time and energy for customers. Large steel casting manufacturers have rich casting production experience, which can meet the needs of different products and provide high-quality products.
Casting is a kind of metal forming object, that is, mold, cooling, grinding and other subsequent processing methods. Casting has a long history of application. In ancient times, people made castings and some daily necessities. In modern times, castings are mainly used as blank of mechanical parts, and some precision castings can also be directly used as mechanical parts. Castings account for a large proportion of mechanical products. For example, tractors account for about 50-70% of the total weight, agricultural machinery accounts for about 40-70%, and machine tools and internal combustion engines account for about 70-90%.
What are the advantages of Dalian castings
1. the casting has good size, shape and repeatability, and has the characteristics of precision casting, which can replace precision casting to a certain extent;
2. high surface finish of castings;
3. cancel the sand core and core making workpiece, and eradicate the casting defects and wastes caused by core making and lower core;
4. out of box and out of box, which greatly simplifies the molding process and eliminates the casting defects and waste products caused by box closing and box closing;
5. dry sand molding sand without binding, adding water or adding any additives shall be used to eradicate various casting defects and wastes caused by moisture, additives and adhesives;
6. the sand treatment system is simplified, almost all molding sands are reused, and the core sand preparation is changed to mold bundle preparation;
Stainless steel has high strength, large cutting plastic deformation, large tangential stress and large cutting force. In addition, the material has poor thermal conductivity, and the temperature is only concentrated near the blade, which is relatively small in the narrow area and is not easy to contact. Therefore, for all precision casting manufacturers, stainless steel precision casting is also more troublesome.
In the field of precision casting, there are many technological processes with strong cohesion, and each process has many independent variables. Because of defects, this independent variable is difficult to test and control. Therefore, the quality management method of precision casting should prevent defects, continue scientific research and deal with various quality problems. According to active market research, constantly understand the quality requirements of customers or customers, provide after-sales service, and ensure the quality of the sales market. The quality management method is the total number of thematic activities such as integration, manufacturing, testing and sales.
