8000 ton press heavy industrial head production line project Lanzhou Fund Application Report Description of writing content:
1、 Background and necessity of project implementation, and preliminary work of the project
1. Project Background
The head of pressure vessel is an important part necessary for manufacturing pressure vessels, including standard elliptical head, dished head, flat head, conical head, spherical head and other types. It is widely used in petrochemical, machinery, medicine and food, boilers, nuclear devices and other industries. Lanzhou is an important petrochemical production base in China. The demand for pressure vessels in Lanzhou and its surrounding areas is very large. The manufacturing industry of boiler and pressure vessels is developed, and various pressure vessel heads are the upstream products of boiler and pressure vessel manufacturing. Therefore, the pressure vessel head has a wide market in the five provinces and regions in northwest China.
*****The products of the factory have basically occupied most of the markets in Gansu, Qinghai and Ningxia, and are also sold in Xinjiang and Shaanxi, with customers covering petrochemical machinery manufacturing enterprises, boiler manufacturing enterprises, nuclear plants, etc. However, the 2500 ton oil compressor currently configured by * * * * can only press ordinary heads below Φ 3200 × 26 mm; Although the spinning machine can press the head below Φ 5200 × 26mm, it has no production capacity for the head with wall thickness above 26mm. Therefore, the heavy industrial heads with large diameter, thick wall and high technical requirements have always been customized from Shandong, Henan and South China. The inconvenience of transportation and long ordering cycle have increased the cost of pressure vessel equipment manufacturing enterprises, which has become a bottleneck restricting the development of equipment manufacturing in northwest China.
2. Project necessity
(1) Market needs.
To survive in the unpredictable market, enterprises must grasp the pulse of the market, follow the market dynamics, and constantly develop marketable products.
The second half of 2008 witnessed a global financial crisis. Driven by the government's policy of revitalizing domestic demand and increasing capital construction investment, the production of * * * * Factory has not been affected by the financial crisis, but has further developed. Revitalizing the equipment manufacturing industry is one of the important policies formulated by our government to develop our national economy. Promoting the technological transformation of enterprises has received strong support from the government. Therefore, the market prospect of pressure vessel head is very good, especially for heavy industrial head. With the continuous development of equipment manufacturing industry, the demand for heavy industrial heads is growing. Heavy industrial heads with large diameter, large wall thickness and high technical requirements have high technical content, and the processing added value of products is correspondingly high. Therefore, it is timely and necessary to put forward the "8000 ton press heavy industrial head production line expansion and technical renovation project" of Lanzhou Yuxin Head General Plant. After the implementation and construction of the project is completed, because there is no competitor in the northwest region and it is suitable for the market demand, the sales will be multiplied, and its social and economic benefits are significant. Gansu Project Fund Application Report
⑵. Enterprise's own development needs
"Be bigger and stronger" is the consistent pursuit of every enterprise to develop itself. At present, due to the small tonnage of the hydraulic press, the main equipment for head making, many heavy heads cannot be made, so some customers have to be turned away. With the accumulation and improvement of enterprises' economic capacity, the construction of heavy head production line must be put on the agenda. Once this production line is completed, it will not only increase the range of product varieties and specifications, but also greatly enhance the corporate image and position in the industry, which is conducive to market development.
⑶. Improve quality, reduce costs, save energy and reduce emissions
Head manufacturing generally includes stamping, spinning, explosive forming and other processing methods. Spinning can be divided into hot spinning and cold spinning. Hot spinning has high requirements for equipment and processing technology, large investment and high production costs. Only a few head manufacturers in China use this production process. Cold spinning is not suitable for heads with thicker wall thickness. The forming speed is slow and the processing efficiency is low. Annealing is generally required to eliminate the residual stress after forming, and the manufacturing cost is also high. The hot stamping adopts a series of special dies with high forming precision. Because the hot processing does not need stress relief annealing, the quality is good, and it can be formed once generally, with high production efficiency and low cost. However, the key to adopting the hot stamping process is to have a valuable hydraulic press with corresponding capabilities. Therefore, the use of large tonnage hydraulic presses has become the leading trend of domestic head manufacturing enterprises.
****After the completion of the 8000 ton press heavy industrial head production line, the head originally manufactured by the cold spinning process can be changed to the hot stamping process. In this way, the quality is improved not only because of high forming precision and small residual stress; Moreover, due to the high production efficiency, it is not necessary to transport the spinning heads to other units for annealing in order to eliminate the residual stress, thus reducing the production cost.
Another feature of the technical transformation of this project is to change the coal fired reverberatory furnace into the gas fired reverberatory furnace. Because the head slab needs to be heated to 950-1050 ℃ in the reverberatory furnace before stamping, the fuel used in the reverberatory furnace of our factory is large high-quality lump coal, which is high in price. However, the reverberatory furnace with lump coal as the fuel has low thermal efficiency, slow heating speed, and heavy smoke and dust pollution when starting the fire. The gas producer uses fine coal, and the fuel price is half lower. The reverberatory furnace uses gas as the fuel to control the furnace temperature, which is convenient, flexible, less fuel consumption, less smoke and dust, and has good energy-saving and emission reduction effect. Therefore, it is necessary and imperative to transform the coal-fired reverberatory furnace into a gas-fired reverberatory furnace using coal to gas as fuel.
⑷. Now is a good time to build the project
In response to the financial crisis, the government has launched a series of support policies for enterprises, and it is easier for SMEs to obtain bank loans. This project uses more steel. Our factory took advantage of the favorable opportunity of low steel prices in early 2009 to purchase a batch of steel, which can reduce the investment cost of the project. At present, it is time to seize the opportunity to complete the heavy industrial head production line project that the enterprise has been looking forward to for many years and has broad market prospects.
Lanzhou Zhiyuan, a professional writer, Lanzhou Fund application report ， Gansu Project Proposal Enterprises.
