The Production Process andTtechnological Requirements of Stainless Steel Precision Casting

Dongying Shengyu Precision Casting Factory will effectively manufacture molds according to different shapes. The mold of the product can be effectively divided into upper mold and lower mold, and integrated processes such as milling, etching, and EDM are used. The shape and size of the pits are consistent with the half of the product.

The first layer of fine sand produced by Dongying Shengyu Precision Casting Factory is naturally air-dried at the set temperature, but it will not affect the shape change of the inner wax mold. The natural wind drying time depends on the internal complexity of the product itself. The air drying time for the first pouring is about 5-8 hours.

Dongying Shengyu Precision Casting will effectively fix its baking process on the die head, and then effectively complete the wax mold of its sandblasting drying process into its metal-enclosed special furnace for heating, because of the melting point of industrial wax Not high, the temperature is about 150.

There are two major types of dewaxing casting methods: the solid mold method and the ceramic shell mold method. The latter is an improved method of the former.

The production of the pottery shell mold method to the wax mold is the same as the solid mold method, except that after dipping and sanding (or floating sand) once, the overmolding operation is not carried out, but the dipping and sanding are repeated many times. , Until the predetermined shell thickness is obtained. The wax is dried, heated, melted, and heated at high temperature before pouring. This method is widely used by the current dewaxing precision casting industry because it has the following advantages:

(1) The manufacturing process can be partially automated to save manpower and increase production rate

(2) Lower production cost

(3) The ceramic shell mold is thinner, and the cooling rate of the casting after pouring is higher and uniform, so its mechanical properties are better.

(4) Better dimensional stability

In addition, what are the mechanical and technological requirements for stainless steel precision casting?

During use, the temperature of stainless steel precision casting can ensure that the melt has good fluidity during the injection process. In the process of selecting temperature, stainless steel precision casting needs to be effective according to factors such as the distance of its transfer, cooling and flow rate during the transfer process.

When stainless steel precision casting is used, the cracking tendency of the ingot is lower. In use, it is necessary to ensure that the alloy has good exhaust and shrinkage capabilities. In the course of use, an orderly crystallization condition is created, which effectively increases the density of the product. The pouring temperature is generally higher.

Stainless steel precision cast ingots are small-diameter steel ingots. Due to the small transition zone size, their mechanical properties are good. They generally meet fluidity and do not form bright crystals. The temperature is 715~740℃, and the slab has a high tendency of hot cracking.

In the process of using stainless steel precision casting, its mechanical properties are generally higher than that of cast iron, but the performance of this material is even worse. During the production process, the melting point of the product is higher than the melting point of other materials.

There are many problems in the stainless steel precision casting process, mainly due to the poor liquidity of molten steel. In the process of processing, in order to effectively prevent the cast steel from being cold, the wall thickness of the cast steel should not be less than 8mm.

The structural force of the stainless steel precision casting system is very simple. During use, if cast iron, the cross-sectional size of the equipment is larger. In the process of processing, hot casting or dry casting can be used.