Casting manufacturers take you to understand the advantages of precision casting parts

Simply understand the advantages of precision casting parts.

Precision casting is one of the casting methods. Compared with the traditional casting process, precision casting is a special casting method. Accurate shape, high casting precision. The commonly used method is: first, design and manufacture molds (less or no surplus) according to product requirements, cast wax, and obtain the original wax mold; Repeat coating and grinding the wax mold to make the shell hard and dry; Then melt the wax mold to get the cavity. The shell has sufficient strength and breathability; Metal materials required for precision casting; High precision finished shelled sand. According to product needs or heat treatment and cold treatment. The following are the advantages of precision casting.

1. Precision casting parts are widely used, not limited by casting size, thickness and complexity, and easy to produce.

2. Precision casting parts can use a variety of materials, including steel, iron, aluminum, copper, gold, silver, etc., and can cast its alloys. It consumes less than the ordinary forging method.

3. Casting parts have certain dimensional accuracy, small processing allowance, saving processing time and metal materials.

4. Low cost, good comprehensive economic benefits, low energy consumption, less consumables.

5. Precision casting can cast super alloy castings, such as jet engine blades, streamline profiles and cooling chambers. However, the use of precision casting technology can not only achieve large-scale production, ensure the consistency of castings, but also avoid the knife marks left after processing.

6. Precision casting has high dimensional accuracy and surface cleanliness, which can reduce the processing workload. Parts that meet small needs require only a small amount of machining allowance. Some castings can even be processed inorganic, leaving only a polishing and polishing margin. It can be seen that precision casting can save a lot of machine tools and processing time, and greatly save metal raw materials.

Cast iron casting is a general term for castings of precision size. Precision casting results in more accurate casting sizes and better surface cleanliness than traditional sand casting processes. The main products are: melt mold casting. Ceramic castings. Metal castings. Pressure casting. Disappear mold casting. Precision casting is also known as wax casting. The product is complex and close to the shape requirements of the parts. Can be used directly without processing or machining. It is an advanced technology close to the network. The following are the requirements for precision casting blanks.

(1) Mechanical properties of precision steel casting:

The process characteristics and mechanical properties of the workpiece material roughly determine the type of billet. Such as cast iron billet; Ordinary steel bar with simple shape and low mechanical performance requirements; For important steel components, forgings are selected in order to obtain good mechanical properties; When the shape is simple, choose cast steel parts. Complex raw materials and poor mechanical properties. It can be used for the shape and casting of non-ferrous metal parts.

(2) Structural shape and size of parts:

The blank of large and simple parts is generally sand or free forging. High precision casting mainly adopts complex and rough structure. The blanks of small parts can be forged or pressed. Billet is mainly used for forging; If the step diameter is not very large, it can be used on the pole; If the size of each step varies greatly, forging should be used.

(3) Existing production conditions:

The judgment of the blank should be combined with the specific production situation, such as the actual output, production capacity, the possibility of outsourcing, etc., otherwise it is unrealistic.

(4) Make full use of new technology. New materials:

In order to save materials, energy and improve processing efficiency, casting methods and materials such as precision casting, precision forging, cold rolling, cold extrusion, powder metallurgy, profiles and engineering plastics should be fully considered. Therefore, even without processing, the number of processing can be greatly reduced. The economic benefits are remarkable.