ASTM Feiteng Corrosion Resistant Titanium Casting

Titanium Casting ASTM B367 Gr2 Titanium Castings Titanium MateriaI

The method to solve the shrinkage defects of castings is:
(1) Fast solidification is carried out in the thick and hot joints of machine tool castings, artificially causing the basic balance of temperature field in all parts of machine tool castings. Use inside and outside cold iron, local use heat storage zirconium sand, chrome iron ore or special coating.
(2) Reasonable process design. The inner gate is located at the relative thin wall of the machine tool casting. So that the earliest into the thick wall of the metal liquid solidification first, after the solidification of the thin wall, so that the basic equilibrium solidification. For machine tool castings with uniform wall thickness, multiple inner sprue and air outlet are used. Many inner sprue, scattered and evenly distributed, so that the overall heat balance. The air outlet is thin and many, that is, the exhaust is unobstructed and plays a role in heat dissipation.
(3) Change the position of the inner gate
(4) Choose large heat storage modeling materials, which is very important for the production of anti-wear products with lost mold! Chromite ore to replace quartz sand and other small heat storage of other sand, will achieve good results, casting microseismic better!
(5) Low temperature fast burning, open casting system. The liquid metal fills the mold quickly, smoothly and evenly. It depends on the circumstances.
(6) The machine tool casting strength of ductile iron is large, the surface hardness is ≧90, and the rigidity of the sand box is large, which is beneficial to eliminate shrinkage and loosening.
(7) When the riser is needed, move the hot riser first and leave the hot joint. If the riser is placed on the hot joint, the size of the riser will be increased to form "heating on heat". Do not do well, not only shrink loose difficult to remove, but also produce concentrated shrinkage, and reduce the production rate of the process.
(8) Casting tilt placement and alloying, both benefit. Eliminating shrinkage defects of machine tool castings is a complex process of recognition and implementation. Based on the principle of "thermal balance", scientific analysis should be made on Ju casting, reasonable process plan should be formulated, suitable molding materials, tooling and correct operation should be selected and standardized. Then the shrinkage defects of any machine tool castings can be solved.

Features

1. Low Density and High Specification Strength
2. Excellent Corrosion Resistance
3. Good Resistance to Effect of Heat
4. Excellent Bearing to Cryogenics Property