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Understand the resources of the western mines. The western region is rich in mineral resources. The industry has a prominent position in the development of the country and the western society, but there are also many problems. Through rational extension and adjustment of the industrial chain, promote the efficient development and utilization of mineral resources in the western region, build a western resource industrial base, and realize the transformation of resource advantages into economic advantages. Studying the effectiveness of mineral development in the western region and the main problems faced are related to the overall industrial structure of the country and the overall adjustment of the industry layout, and can also provide important support for the search for new economic growth points in the economic crisis.
The western region is rich in more than 60% of China's mineral resources. The rich mineral resources are the basis and advantage for the sustained and healthy development of the economy in the country and the western region. Correct understanding of the status quo and analysis of problems is a key link in the search for mineral resources economic engines in the western region.
Basic situation of development and utilization of major mineral resources in the western region Basic situation of development and utilization of major mineral resources For many years, through the development of mineral resources in the western region, Korla, Jinchang, Baiyin, Yumen, Panzhihua, Dongchuan, Liupanshui, and Gejiu have been built in the western region. A large number of mining cities such as Golmud have greatly enhanced the industrial base of the western region, promoted the economic development within the region and responded to resource endowments. Most of the mineral resources in the western region have also been exploited and utilized, and a large scale of production has been formed. . At present, the production of major mineral resources in the western region accounts for about 30% of the country's total output, including natural crude oil, lead, molybdenum concentrate, antimony, magnesium and titanium; accounting for about 40% of the national output, with raw coal and primary aluminum; accounting for half of the country The above production includes natural gas, phosphate rock, zinc, nickel, tin and mercury.
Among them, about 80% of the country's natural gas and tin are produced in the west, and almost all of nickel and mercury are produced in the west.
Mineral resources industry in the western region There are 7,674 mining and smelting and rolling enterprises in the western region, including 4,441 mining enterprises and 3,323 smelting and rolling enterprises (processing). In 2007, mining enterprises above the scale of the western region accounted for 1/6 of the country. Among them, coal, oil and gas, non-ferrous mining and selection accounted for about 30% of the same number of similar enterprises in the country, oil processing and coking accounted for about 1/4, ferrous metal mining and black, non-ferrous metal smelting and rolling enterprises accounted for about 1/5. Large-scale mining enterprises in the western region accounted for 1312% of the country; medium-sized enterprises accounted for 23,184%; small-sized enterprises accounted for 3513%; small mines accounted for 43,126%. Obviously, small and small mines account for a large proportion in the western region. Small and small mines are mainly distributed in Chongqing, Sichuan, Guizhou, Yunnan, Shaanxi, Inner Mongolia and Guangxi. Their small mines account for 89185% of the entire western region, and the proportion of small mines in the western region reaches 79192%.
From the requirements of building resource industry bases, resource intensification and scale development, it will be inevitable to strengthen the integration of small and small mine resources in these places.
(1) are generally made of carbonized carbon steel (accounting for 99% of total production). It can also be made of stainless steel or non-ferrous metals.
(2) The product must be heat treated. Carbon steel tapping screws must be carbonized and stainless steel tapping screws must be solution hardened. In order to make tapping screws to meet the requirements of the standard of mechanical properties and performance.
(3) The product surface hardness is high, the core toughness is good. That is, "soft inside strong outside". This is a major feature of tapping Screw performance requirements. If the surface hardness is low, it can not be screwed into the matrix; If the core toughness is poor, a twist will break, can not be used. So "inside soft outside steel" is self-tapping screw to meet the use of performance, very important requirements.
(4) The surface of the product needs surface protection treatment, generally electroplating treatment. Some product surface must be treated by phosphate (photostatting), such as wall panel self - tapping screws for photostatting.
(5) Production by cold heading process. It is recommended to use high-speed cold heading machine and high-speed wire rolling machine or high-speed planetary wire rolling machine. High speed is emphasized here to ensure product quality. Only the head of tapping screw produced by high-speed machine is well formed and the thread quality is high.
Rational development of western stone resources to promote economic development in the west
The western stone mine is rich in resources, and promoting the economic development of the western region is an important measure of the State Council. The development of the western region is conducive to reducing the economic gap between the central and western regions.