The stainless steel sculptures we have seen in the past are mostly forging processes, and the stainless steel sculpture casting process is actually very mature. The performance is also a completely different form of stainless steel sculpture. The stainless steel sculpture casting process is the technology of melting metal casting. Next, Boao Beijing Sculpture Company will introduce the stainless steel sculpture casting process in detail.
In fact, the stainless steel sculpture casting process is equivalent to precision casting in casting. Precision casting refers to the general term for obtaining precision casting processes. Compared with the traditional sand casting process, the castings obtained by precision casting have more precise dimensions and better surface finish.
It includes: investment casting, ceramic casting, metal casting, pressure casting, lost foam casting. Precision casting is also called lost wax casting. Its products are precise, complex and close to the final shape of the parts. They can be used directly without machining or processing. It is an advanced process of near net formation.
Stainless steel sculpture casting first step: remanufacturing
The sculpture prototypes created by clay sculptures or other forms are transformed into models. The common methods in sculpture processing include gypsum remanufacturing, lost wax method, FRP reversal, and silicone reversal.
We don’t introduce the method of reversing here, but rather the advantages and disadvantages of several methods of reversing:
Lost wax method: The relative process is more complicated. This method has good accuracy and can be used as a casting of high melting point metals such as titanium. However, due to the high price of ceramics and the need for multiple heating and complexity, the cost is quite expensive.
Gypsum Remanufacturing: This is the most common method used in sculptures because it is simple and inexpensive, but the disadvantage is that the details are not well represented and the mold is disposable.
FRP reversal: This is the more common reversal mode, the most cost-effective conversion method.
Silicone remanufacturing: This method is often used in Boao Beijing Sculpture Factory. The silicone turning method can well represent the details of the sculpture, and the mold can be used for a long time.
Stainless Steel Sculpture Casting Part II: Casting
Casting is a metal thermal processing technology that has been mastered by humans for a long time. It has a history of about 6,000 years. China has entered the heyday of bronze castings between 1700 and 1000 BC, and the process has reached a fairly high level.
Casting is a method of casting liquid metal into a casting cavity that conforms to the shape of the part, and after cooling and solidifying, to obtain a part or blank.
The material to be cast is mostly a metal that is originally solid but heated to a liquid state (eg, copper, iron, aluminum, tin, lead, etc.), and the material of the mold may be sand, metal or even ceramic. The method used will vary depending on the requirements.
Stainless steel sculpture casting is not only suitable for casting of various types and various alloys, but also produces sculptures with higher dimensional accuracy and surface quality than other casting methods. Even other casting methods are difficult to cast, high temperature, and not easy to process. Castings can be cast by investment casting.
Stainless steel sculpture investment casting process:
The so-called stainless steel sculpture investment casting process, simply by using a fusible material (such as wax or plastic) to make a fusible model (referred to as investment or model), coated with several layers of special refractory coating, dried After hardening to form a monolithic shell, the model is melted from the shell by steam or hot water, and then the shell is placed in a sand box, filled with dry sand molding around it, and finally the mold is placed in the roaster. After high-temperature baking (for example, when a high-strength type shell is used, the demoulded shell can be directly fired without styling), and the mold or shell is fired, and molten metal is poured therein to obtain a stainless steel sculpture casting product.
The biggest advantage of the stainless steel sculpture investment casting process is that because the investment mold has high dimensional accuracy and surface finish, it can reduce the post-processing work, but only a small amount of machining allowance is required in the higher part of the notch welding detail. Even some castings are left to be polished and polished, and can be used without machining.
It can be seen that the stainless steel sculpture investment casting method can save a lot of machine tool equipment and processing man-hours, manual operation time, and greatly save metal raw materials.
Another advantage of the stainless steel sculpture investment casting method is that it can cast complex stainless steel sculpture castings of various alloys, especially for casting superalloy sculptures.
As a professional sculpture company, we hope to use the most careful sculpture design concept, the most complete sculpture factory and the most exquisite sculpture production technology to create the best quality campus sculpture for all universities.