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Forming performance and corrosion resistance of pump valve castings

May 11, 2018

Pump valve castings is mainly used in the process of operating the casting method for forming objects, when making operation needs to be good liquid metal smelting, casting, injection, inhaled or other casting method into the prepared mold, after cooling the shakeout, cleaning and post-processing, etc., of a certain shape, size and properties of objects.

Strength of pump valve castings.

Pump valve castings in production process of the steel structure of the yield point to a certain extent, decided to look at the structure of no permanent deformation stress, typical carbon structural steel, the minimum yield point is 235 mpa. The minimum yield point of typical low-alloy steel is 345MPa. Therefore, according to the proportion of the yield point, the use of low-alloy high-strength steel is 1.4 times higher than that of carbon structural steel.

Forming performance of pump valve castings.

Pump valve castings and carbon structural steel are, to some extent when operated in the high strength low alloy steel, in the process of operating the high strength low alloy steel in general can undertake the processing, such as shearing, punching and machining, although its high yield point, even forming deformation is quite severe operation also can be used for forming of carbon structural steel cold bending punching machine, drawing machine, pressing machine and other equipment, but some equipment need to be modified.

Corrosion resistance of pump valve castings.

Atmospheric corrosion resistance of high strength low alloy steel with the corrosion resistance of alloy element in one of the largest group of Taiwan and content, to improve the performance of resistance to atmospheric corrosion elements are copper, phosphorus, silicon, chromium, nickel and molybdenum.

Pump valve casting technology design, in the process of design, to a certain extent, in addition to according to its working conditions and the performance of the metal material to effectively determine the geometric shape, size of the casting, also must from the perspective of the casting alloy and casting characteristics to consider the rationality of the design, namely the obvious size effect and solidification, shrinkage, stress and other problems.http://www.pump-casting.com/