The project covers an area of ​​50 mu, with a total investment of 60 million yuan and a construction area of ​​20,000 square meters. Among them, the first phase of the project, 10,000 square meters of factory buildings will be completed and put into operation before the end of the year. After the project is completed and put into production, it will develop, develop and manufacture various wire and cable for special purpose and special functions below 6KV in strict accordance with IEC, GB, JB, GJB and customer requirements. Covers low-smoke, halogen-free, flame-retardant, fire-resistant, torrefaction-resistant, high-low temperature, corrosion-resistant, oil-resistant, chemical-resistant, waterproof, anti-mouse, anti-termite, anti-pressure, tensile and anti-radiation functions; In the aviation, aerospace, military, electrical, electrical, power, communications, shipbuilding, railway, petrochemical, metallurgy, complete sets of machinery, light industry, textiles, research institutes and automation industries. The annual production capacity reaches 20,000 kilometers (7,500 sets), the output value is 120 million yuan, the profit and tax is 20 million yuan, and the employment of the labor force is about 200.
"Gravity Die Casting. A permanent mould casting process, where the molten metal is poured from a vessle of ladle into the mould, and cavity fills with no force other than gravity, in a similar manner to the production of sand castings, although filling cn be controlled by tilting the die."
Gravity Die Casting
Sometimes referred to as Permanent Mould, GDC is a repeatable casting process used for non-ferrous alloy parts, typically aluminium, Zinc and Copper Base alloys.
The process differs from HPDC in that Gravity- rather than high pressure- is used to fill the mould with the liquid alloy.
GDC is suited to medium to high volumes products and typically parts are of a heavier sections than HPDC, but thinner sections than sand casting.
There are three key stages in the process.
- The heated mould [Die or Tool] is coated with a die release agent. The release agent spray also has a secondary function in that it aids cooling of the mould face after the previous part has been removed from the die.
- Molten metal is poured into channels in the tool to allow the material to fill all the extremities of the mould cavity. The metal is either hand poured using steel ladles or dosed using mechanical methods. Typically, there is a mould [down sprue" that allows the alloy to enter the mould cavity from the lower part of the die, reducing the formation of turbulence and subsequent porosity and inclusions in the finished part.
- Once the part has cooled sufficiently, the die is opened, either manually or utilising mechanical methods.
Advantages
- Good dimensional accuracy
- Smoother cast surface finish than sand casting
- Improved mechanical properties compared to sand casting
- Thinner walls can be cast compared to sand casting
- Reverse draft internal pockets and forms can be cast in using preformed sand core inserts
- Steel pins and inserts can be cast in to the part
- Faster production times compared to other processes.
- Once the tolling is proven, the product quality is very repeatable.
- Outsourced Tooling setup costs can be lower than sand casting.
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