In industrial manufacturing or life, you will see many brass parts, most of which are made by investment casting. For example, many accessories such as brass jewelry, brass pendants, brass ornaments and so on that are common in our lives are produced by investment casting. The casting performance of brass in copper alloys is relatively good, but its shrinkage is relatively large, and it is prone to shrinkage holes, cold cracks, deformation and other problems. It is necessary to reduce the pouring temperature as much as possible in the actual pouring to improve this problem. Of course, there are many other processes to improve this shortcoming, such as selecting a good sand mold, setting a riser, or setting a gating system, etc., which can be improved, and the details are discussed and analyzed according to the structure of the workpiece.
Brass casting is not only used in jewelry, pendants, ornaments and other handicrafts in daily life, but also widely used in industry, because copper itself has good corrosion resistance and superior conductivity. There are also many brass castings produced by SCZY. The common ones are some handicrafts, some architectural accessories, and auto accessories. We also support secondary precision CNC machining and surface treatment. Let customers have no worries.
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Mineral resources are the blood and food of industry. Geological exploration is an important basic work for national economic construction and social development. "Planning" determined that by 2010, in addition to striving for the formation of a number of important resource reserve exploration and development bases, it will also complete a 1:50,000 regional geological survey of 25% of the territorial land and 1 million of the 50% area of ​​the jurisdictional sea area. Marine geological survey, built into a national geological data center.
In the exploration of energy and non-energy minerals, the “planning†specifies energy minerals such as coal, oil, natural gas, uranium, coalbed methane and iron, copper, aluminum, lead, zinc, manganese, nickel, tungsten, tin, potassium salt, gold It focused on non-energy important minerals, highlighting the exploration of 11 major oil and gas-bearing basins, the exploration of 13 large-scale coal bases and the exploration of non-energy mineral resources in 16 key metallogenic belts, and planning 9 key areas and 12 new areas for oil and gas exploration. New areas, coal resources 11 investigation and evaluation areas and 52 key exploration areas, and key evaluation areas such as coalbed methane, oil shale, and oil sands.
Based on the overall layout of geological work in the east, middle, west and sea areas of China, the "Planning" proposes to strengthen the evaluation of western resources exploration, deepen the exploration of potential resources in the eastern and central regions, strengthen the environmental geological survey of the old industrial bases in the east and northeast, and accelerate the basic survey of the sea areas. Exploration of oil and gas resources.
It is understood that China has adopted new fields of oil and gas exploration and new technologies as one of the main targets for the energy sector during the “Eleventh Five-Year Plan†period. In recent years, China has achieved a series of achievements in oil and gas exploration. The strategic selection of oil and gas resources projects has achieved phased results. The first batch of strategic investigations on the oil and gas resources of the deepwater seas in the northern part of the South China Sea were undertaken by PetroChina, Sinopec, and CNOOC. "Evaluation" "Strategic survey and evaluation of oil and gas resources in the Northeastern Mesozoic and Cenozoic faulted basins", "Research on the prospects for the development and utilization of coalbed methane in China," "Strategies for the investigation and evaluation of oil resources in the former Tertiary of North China" were successfully completed. The development of chemical reserve resources laid a good foundation.
By 2010, it will strive to newly discover about 10 billion tons of oil fields and 8 to 10 billion cubic meters of gas fields. With the approval of the State Council, China's first National Geological Survey Plan will be issued on April 2. "Planning" regards scarce minerals and oil and gas resources as the focus of exploration. By 2010, it aims to achieve breakthroughs in the exploration of more than 200 crisis mines' replacement resources. It has newly discovered about 10 billion tons of oil fields and 8-10 billion cubic meters of oil. gas field.