A radiator casting process

Abstract

The invention discloses a radiator casting process, comprising the following steps: Step 1: preparing molding sand, the molding sand includes clay sand, silica sand, bentonite, and coal powder, and the mass percentages of each material are: clay sand 45%-60%, silica sand 35% %‑46%, bentonite 1.5%‑5%, pulverized coal 2%‑4%; Step 2: Prepare the sand box, using two split type sand boxes, the sand box is a steel lattice structure, and the two ends are added Install positioning and clamping fixture; Step 3: Put the molding sand into the sand box, use the molding sand to make a molding cavity, and set at least three gates on the side of the molding cavity; Step 4: Prepare the melt, so that the temperature of the melt is at Between 1450°C and 1500°C; Step 5: Inject the melt into the forming cavity. The invention has reasonable steps, can well solve the shortcomings in the casting process of the existing cast iron radiators, and ensures the casting process of the cast iron radiators over 1 meter in length.

Description

technical field [0001] The invention relates to a casting process, in particular to a casting process suitable for the manufacture of long-length cast iron radiators. Background technique [0002] Heating radiators are widely used in northern regions, and they are generally composed of multiple radiators. At present, the casting of gray cast iron heating radiators (hereinafter referred to as cast iron radiators) is still dominated by traditional casting methods, and the product height is basically limited to less than 1 meter, resulting in a waste of vertical space. It cannot be compared with high-end series products such as steel, steel-aluminum and copper-aluminum, which affects the decoration of this type of product and people's requirements for saving space. However, cast iron radiators have the characteristics of inherent anti-corrosion resistance and comfortable heat dissipation. For the above reasons, there is still a great market demand for cast iron radiators. The...

AI Technical Summary

Problems solved by technology

The casting process of the existing cast iron radiator is relatively simple. The method adopted is: single-gate oblique casting on the bottom surface of the radiator. Its characteristics are: fast forming speed and stable yield. The product effect is relatively good, but for products above 1 meter, the yield rate will be greatly reduced due to the lengthening of the filling distance and the increase of bottom pressure, and the rate of yield reduction will increase with the length of the casting, until it cannot forming