The process of precision casting and handling is explained in detail

The size and pit shape of stainless steel precision castings are effectively consistent with the edge of the product. The main reason is that the wax mold is mainly used for industrial wax types, so its melting point is not high and the hardness is selected. It is not tall and uses an inexpensive and lightweight aluminum alloy material as a mold. Stainless steel precision casting needs to effectively refine the peripheral margin of its wax mold during production, and glue multiple single wax molds to the pre-prepared mold head after effective deburring during use, which is also an industrial wax solid core model produced by wax molds.

Stainless steel precision casting will effectively coat a number of wax molds on its fixed die head with industrial glue and spray the first layer of fine sand evenly, which is very small and fine, so as to ensure that the final blank surface is as smooth as possible.

After the first sand blast is completed and naturally dried, the industrial glue will continue to be applied to the surface of the wax mold in the process of use, and then the second layer of sand will be effectively sprayed, and the particle size will be larger and thicker than the first layer of sand before, and the wax mold will be naturally dried at a set constant temperature after the second layer of sand is sprayed.

Stainless steel precision casting in the second sandblasting and natural air drying, in turn, the third sandblasting, the fourth sandblasting, the fifth sandblasting and other processes. Then effectively adjust the number of sandblasting according to the size of its volume, surface requirements and self-weight, generally the number of sandblasting is 3-7 times.

There are four kinds of casting methods in the process of silica sol precision casting. In the process of vacuum suction casting, silica sol precision casting will effectively place its mold shell in the vacuum pouring box, and effectively absorb the gas in the mold cavity through the tiny void in its mold shell in use.

Silica sol precision casting in use can effectively make it better to fill the cavity, copy the shape of the cavity, improve the casting accuracy to prevent the defects of porosity and insufficient pouring.

Silica sol precision casting under pressure crystallization, in use will effectively put its shell in the pressure tank for casting, the product at the end of the end, so that the pressure tank will be immediately closed, in use will be into the tank of its high pressure air or inert gas, so that the casting under pressure solidification, to increase the density of the casting.

Silica sol precision casting if the use of its hot type gravity casting, in the process of use, this is a more application of a form of casting, the shell is removed from the baking furnace, at high temperature by pouring.

In the use of some investment castings such as its magnetic steel and turbine blades, if their crystalline structure is arranged in a certain direction of columnar crystals, their performance can be improved a lot, so investment casting directional crystallization technology is rapidly developing.

Stainless steel precision casting in the process of production because of its transition strip size is small, so it will make its mechanical properties are good, stainless steel precision casting can effectively meet its fluidity and do not form bright crystals to a certain extent, the general temperature is 715~740℃.

The crack tendency of stainless steel precision casting round ingot is relatively low, so that it can effectively ensure that its alloy has its good exhaust feeding ability to a certain extent, which can effectively create its sequence close conditions when in use, and can effectively improve its density when in use, and the casting temperature is generally relatively high.

The production temperature of stainless steel precision casting can effectively ensure that its melt will have good fluidity in the process of injection to a certain extent, and the equipment needs to be effectively determined according to some factors such as the distance of injection and the cooling in the process of injection in the process of selecting its casting temperature.

The use temperature of stainless steel precision casting effectively ensures that its melt will have good fluidity in the process of transfer, and the selection of stainless steel precision casting temperature should be determined according to some factors such as the distance of transfer, the cooling situation of the transfer process, alloy, specifications, flow rate and so on.

The mechanical properties of stainless steel precision casting in the process of use are higher than the mechanical properties of cast iron, but the performance of such materials will be worse, and the melting point of stainless steel precision casting in the process of production is higher than that of other materials.

Stainless steel precision casting in the production of its surface is the main shortcoming of pitting, if the product appears such a phenomenon, in the process of use can only choose to scrap treatment, which will cause its production costs to improve, not conducive to the saving of product resources.

When the stainless steel is processed, the geometry of the cutting part of the product tool should generally be considered from the front Angle and back Angle. The requirements for the surface roughness of the cutting part of the stainless steel precision casting should be considered. The surface finish of the cutting part of the stainless steel precision casting can reduce the resistance of the chip forming crimps and improve the durability of the tool.

When stainless steel is processed, due to the large cutting force in use, the tool must have sufficient strength and rigidity to avoid chatter and deformation during the cutting process. This requires the selection of a large cross-sectional area of the tool bar, but also the use of high strength materials to manufacture the tool bar.

Stainless steel precision casting in the process of tempering treatment, can effectively eliminate the stress generated during quenching to a certain extent, the product after quenching martensite and residual austenitic metastable tissue dissociation and transformation, product tempering temperature is usually below the eutectoid transition temperature, the higher is about 650℃, holding time is not less than 2h.

Stainless steel precision casting will effectively with the increase of its tempering temperature, its martensite needs to precipite carbon from the susaturated state of carbon, so that it will effectively form a dispersed, fine carbide, according to the requirements of the performance of the casting, tempering temperature is divided into low, medium and three kinds.

In the process of processing the processing materials of stainless steel precision casting, it is necessary to remove impurities such as dirt and oil, and the return charge of the product must effectively spray off its sand and oxygenated skin, and can be thrown into the furnace for smelting after the completion of the steel material melting pool, according to the requirements of low carbon ferromangane and low carbon ferrosilicon for alloying and pre-deoxidation.

The duration, time and method of the addition of various alloying elements in the production of stainless steel precision casting has a great relationship with its recovery rate, and the order and time of the addition of alloying elements are determined according to the following requirements: the alloying elements should be able to melt as soon as possible to make the composition uniform.

Precision casting castings as small as a few millimeters to thousands of millimeters can be cast, the specifications are relatively broad, and the smaller aperture of the usual precision casting is less than 1 mm. Precision casting wall thickness is 0.5 mm. Precision casting can obtain high casting accuracy and relatively accurate shape.

Precision casting is generally the first to do the required blank electrode, and then the electrode corrosion mold is used to fine the interior to form the cavity. The original wax mold was obtained by casting the wax. Brush the wax mold with a heat-resistant liquid sand layer by layer. Allow to dry with sufficient thickness.

The inner part is reheated, the inner wax mold is melted, and the cavity that differs from the blank is obtained. Then molten iron is cast in the cavity, the shell is peeled off after curing, and the precision casting can achieve the precision manufacturing we need.