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Metal Mold Casting Technology and Equipment for Aluminum Alloy Parts
Aluminium alloy casting process and equipment
The process of casting aluminium alloy is mainly divided into sand casting and die casting. The choice of casting process and equipment should be based on the requirements of mechanical properties, surface quality, dimensional accuracy and batch size.......
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Curvature, weight and allowable deviation of waste heat treated steel bars (GB 13014-1991)
The bending diameter, weight and allowable deviation of heat-treated steel bars (GB 13014-1991)
In China, the bending diameter, weight and allowable deviation of heat-treated steel bars are stipulated by the national standard of GB 13014-1991.
1.Bending diameter
The bending diameter of heat-tre......
15CrMoV5-9 uses
15CrMoV5-9 is a kind of special heat-resistant alloy steel material developed for the power industry. It is mainly used in the production of turbine blades and other high temperature components supporting the combustion chamber in thermal power plants.
15CrMoV5-9 alloy steel is widely used in pow......
YB/T 5064-1993 Cold-rolled steel strip for bicycle chains
GB/T 5064─1993 Cold Rolled Steel Strip for Bicycle Chain
This Standard specifies the requirements for cold rolled steel strip for the manufacture of bicycle chains.
1 Scope
This Standard specifies the requirements for cold rolled steel strip for the manufacture of bicycle chains.
2 Normativ......
Hot rolled round steel, square steel (GB 702-86)
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Hot rolled round steel and square steel (GB 702-86)
Hot rolled round steel and square steel is a common traditional steel in the steel industry, with the abbreviation of GB. Despite its popularity, it is no longer widely used in modern construction. This is largely due to the introduction o......
Electric welded steel pipes for deep well pumps (YB/T4028-1991)
Deep well pump electrical welding steel pipe (YB/T4028-1991)
The deep well pump electrical welding steel pipe (YB/T4028-1991) is a type of steel piping specially designed for use with deep well pumps. The steel pipe is selected for its mechanical strength and dependability for use in such undergr......
Long Term Capital Management
Long-Term Capital Management
Long-Term Capital Management (LTCM) was a hedge fund formed in 1994 by John Meriwether, former vice chairman and head of bond trading at Salomon Brothers. LTCM was created to apply high-yield bond market investment strategies and arbitrage opportunities to a global po......
Mine underground development method
Underground Mining Methods
Underground mining is a method of mining that involves the excavation of tunnels and underground passages. The majority of underground mining operations involve the extraction of ore and other materials from hard rock deposits. However, it is also possible to extract co......
mine shaft
Mineshafts
Mineshafts are tunnels bored deep into the ground in order to extract minerals and ores. This can include precious metals, coal, gemstones, and other minerals. Mineshafts are a common feature of abandoned mines and were once used extensively to extract ore without the need for expensiv......
Rock mass stress
Introduction
The lithosphere of the Earth is composed of the crust and the mantle and both are rigid. Inside the lithosphere, however, is still dynamic with plates in constant movement and their continuous interaction with each other. As a consequence of the pressure and friction generated by this......
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