Hollow turbine blade manufacturing process
Turbine blades is a key component of power equipment, the structure and materials continue to improve the human to improve energy efficiency, access to high-performance equipment (power equipment) and products (such as aircraft) of the key. Because it is in the highest temperature, stress the most complex parts of the environment was the worst as the first key pieces, and known as the “crown jewel.” Therefore, the manufacturing technology home and abroad as the past 20 years the majo...
Wax Casting Research and Development
Casting Wax index test results show that the newly developed model of the bending strength of material, surface hardness, linear shrinkage and ash and other indicators to the existing series of domestic enterprises wax casting standards, indicators in the temperature close to the Japanese k512 wax casting product standards , and has heat resistance, coating hanging, mobility and reusability good characteristics, to meet the needs of the domestic production of precision casting and mold materials...
The type of cast iron
1.Alloy Cast Iron Without prejudice to the principle of graphite structure, by adding sufficient amount of iron in the alloy elements (usually containing Cr, Ni, Cu, Mn and Mo in the one or several) to change the al-Qaeda, and to achieve a modest improvement in the physical and cast iron The purpose of the mechanical properties. Normal levels of raw materials, such as exists in Si, Mn, S and P are not as addition of alloying elements. 2.Cast Iron Mainly iron, carbon and silicon the general term ...
Dimensional accuracy For investment casting
Dimensional accuracy For investment casting, generally up to CT4-6 (sand casting for the CT10 ~ 13, casting for the CT5 ~ 7), of course, the investment casting process complex, dimensional accuracy of castings are many factors, such as mold material shrinkage, melting mode of deformation, shell in the process of heating and cooling the amount of change in the line of the alloy during the solidification shrinkage and deformation in the casting, so the size of an ordinary precision castings though...
