High Precision Casting Production Capacity

- Oct 20, 2017 -

Precision casting, also known as investment casting, has the following characteristics compared with other casting methods and parts forming methods:

1. High precision castings, fine surface roughness, the size of castings can reach 4-6, the surface roughness can be up to 0.4-3.2μm, can greatly reduce the processing allowance of castings, and can achieve no amount of manufacturing, reduce production costs.

2, can cast complex shape, and difficult to use other methods of processing castings, the size of the castings to a few millimeters large to thousands of millimeters, Precision Casting the wall thickness of the thinnest 0.5mm, the smallest hole is below 1.0mm.

3, the alloy material is unrestricted: such as carbon steel, stainless steel, alloy steel, copper alloy, aluminum alloy and high-temperature alloy, titanium alloy and precious metal materials can be produced by casting, Precision Casting for difficult to forge, welding and cutting of the alloy materials, is particularly suitable for casting method production.

4, high flexibility in production, adaptable. It can be used in mass production as well as in small batches and even in single pieces.

To sum up, precision casting has the advantages of small investment scale, large production capacity, low cost, Precision Casting complex product process simplification and quick investment. Thus in the competition with other processes and modes of production in a favorable position.

The advantages of precision casting:

1. The scope of adaptation is wide, not limited by the size, thickness and complexity of the shape of the castings. Flexible mode of production

2. Can be used in a wide range of materials, Precision Casting can be used in a large number of scrap metal and renewable resources, and forging compared to the power consumption of small.

3. Castings have a certain size precision, small processing allowance, saving working hours and metal materials

4. Low cost, good overall economic performance, energy, material consumption and lower cost

Precision Casting method for precision castings. Usually refers to investment casting or lost wax casting, that is, the use of materials can be melted into a whole or parts of the mold to obtain precision castings casting method. Paraffin wax and stearic acid are used as the main raw materials to press wax-forming, Precision Casting and the wax molds are assembled in the same runner, after repeated leaching of refractory materials (quartz powder or wrong stone powder) with water glass or ethyl silicate as binder, the surface layer of wax mold is formed with a certain thickness of multilayer shell, and the immersion temperature is higher than that of wax material after hardening of shell. The melting point of the water in the wax mold, the shell by High-temperature roasting can cast the casting. The alloy material of castings is made of alloy steel, its weight and size are limited by the performance of wax mold, the size is generally not more than 1 meters. The fine castings have broad application range, weight from 0.5 grams to 700 kilograms, thickness from 0.25 to 1.2 mm to 75 mm; the inner hole diameter 0.5 15 mm castings can reach ITLL 113-grade precision (sand-type steel castings are only IT16 118 grades); Surface roughness to where L 13 micron, processing allowance can be as small as 0.35 0.8 mm. Precision Casting The surface roughness of the precision castings depends on the variety, granularity and binder of the refractory, and the dimension precision depends on the wax properties and binder. Because of the complicated process, the cost of raw materials is high and the cost of castings increases correspondingly, so the precision casting is only used for the high casting production. In China, the agricultural machinery manufacturing industry is the use of the most industrial sectors of precision castings, most factories set up fine casting section, workshop or factory, Precision Casting such as Luoyang first tractor factory precision casting Factory production capacity of 20 () 0 tons, has built an automated coating shell production line.