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The Composition of Casting System
Casting system is to introduce the liquid metal mould cavity and open channels within the mold.Gating system include:1) pouring basin.Undertake metal ladle poured in, also call outside the gate(2) the sprue.Connected at the outer gate and h...

Stainless Steel Seamless Tube of The Effe
For stainless steel seamless tube, the three elements of solid solution treatment temperature, holding time and cooling rate. The role of stainless steel seamless tube solid solution treatment: 1: made of stainless steel seamless tube organi...

The Effect of Solid Solution Treatment
Solid solution temperature is mainly determined according to chemical composition. Generally speaking, variety and high content of alloy elements brand, to increase solid solution temperature. Especially manganese, molybdenum, nickel, high c...

The Heat Treatment of The Investment Cast
For the second type of heat treatment and advocate, al qaeda has had the obvious change, can be roughly divided into five categories:1, softening annealing: its purpose is to decompose the carbide, its hardness is reduced, and improve the pr...

The Heat Treatment of Precision Castings
Because different aims of precision casting, heat treatment, basic can be mainly divided into two categories, the first category is the organization structure will not change or by heat treatment and should not be changed, the second is the...

Casting Surface Defect Detection Method o
Eddy current testing is suitable for inspection are rarely more than 6 ~ 7 mm deep beneath the surface defects. Eddy current testing points to place coil method and through the coil method two. : when the specimen is placed near the coil of...

Casting Penetration Testing of Surface De
Liquid penetrant testing is used to check the various open defect of casting surface, such as surface crack, such as pinhole on the surface of the defects of the naked eye is hard to find. Commonly used penetrant testing is shading detection...

Casting Surface Defect Detection Method o
Magnetic particle testing is suitable for testing surface defect and number of mm deep beneath the surface defect, it needs a dc or ac magnetization equipment and magnetic powder can (or magnetic suspension) testing operation. Magnetization...

The Role of Rare Earth In Nodular Cast Ir
Since the 1960 s of the study showed that the inoculants containing cerium can keep the liquid iron in the midterm increase the count, the final group contains more chilling tendency of graphite ball and smaller. The research also suggests t...

Grey Cast Iron Production and Performance
Cast iron is more than 2.1% of the iron carbon carbon alloy, it is to cast iron (partial steelmaking pig iron) (cupola and electric furnace to melt in the furnace, and adding ferroalloys (such as ferrosilicon inoculant) the components, scrap...

Repair The Type of Investment Casting Met
In the process of precision casting, whether small or large parts of machine structure, the modelling of what we do must be in to repair the type of parts after the draw, there are various methods of type, today we have four kinds of method...