The first winner of the “Mayor Quality Award†in Wuxi City, Jiangsu Province--the FAW Liberation Wuxi Diesel Engine Factory (hereinafter referred to as Xichai) has achieved another great success recently: by the end of June, Xichai has achieved excellent results with a production and sales volume of over 172,000 units. Output and sales increased by 11% and 13.5% respectively year-on-year. In the first half of 2009, production and sales volume of Tin Chai increased month by month, and records were set several times to create a new historical level.
It is understood that from January to June this year, Xichai has made new progress in various aspects such as market sales, product development, quality improvement, productivity improvement, management innovation, party building work, strategic research, key project promotion, and corporate culture construction. In the first quarter of the year, the market rebounded month after month and ushered in the golden season of sales. In the first quarter, the production and sales of diesel engines reached 70,000 units and achieved a good start. In the second quarter, Xichai began to work on six key areas, namely, grasping the pulse of the market, intensifying market development, strengthening the refitting business, and increasing the market share; advancing technological advancement and accelerating technological optimization; meeting market demand and ensuring high quality and high output; Activities, improve enterprise management; highlight sales promotion, reduce costs, and protect corporate profits, which effectively promoted the work, so that the second quarter has achieved better results and has reached a new height.
The reason why this success was achieved in the context of the global financial crisis stems from the fact that Xichai has continuously enhanced its transformational drive and has strived to turn the “challenge period†into a “elevation periodâ€. When the market was attacked by the “cold streamâ€, it actively carried out activities such as rationalization proposals and labor competitions, provided advice and suggestions, and brainstormed difficulties. In March and June this year, during the full-scale labor competition of the “Tougher, self-reliant, win-win, and double-duty†campaign conducted by the Xichai factory in March and June this year, a group of advanced collectives and individuals emerged. Five departments and 15 teams have made special contributions. In the team award, 30 employees won the special contribution individual award. Plant leaders often in-depth production and market to understand the situation, enhance employee confidence, and further stimulate their enthusiasm to overcome difficulties and creativity, so that production and sales continue to refresh records, effectively promote the company's sustained, stable and healthy development.
"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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