What are the advantages of double alloy screw?
double alloy screw also called Bimetallic Screw, double alloy screw refers to products made of high quality alloy steel (38CrMOALA) or chromium molybdenum alloy steel black cross (SACM645) after quenching and tempering, shaping, molding, grinding, surface nitriding or spray welding alloy (metal), polishing and other process of refining, has high wear resistance and the advantages of corrosion resistance. Suitable for all kinds of plastic and glass fiber, adding PPA, PO, PPS, LCP, ABS fire, bakelite powder and magnetic powder, PC and other special engineering plastics and its main material is composed of two different types of metal, has the advantages of processing the most economical, the highest economic benefit.
Manufacture of double alloy screw: in 38CrMoAIA substrate, according to the needs of users, cutting and forming groove, a special melting alloy material, using special methods uniformly covered in base material, and according to the special requirements of users, with a different formula to achieve the best effect, and this kind of alloy in the uniform coating on the base metal without cracks, holes, impermeable, and relieving stress after grinding to the required drawing, this special composite matrix and neat semi molten state, hardness can reach HRC59-64, the parent material full of hard chromium plating layer 6 ~ 8 wire two. Double metal pipe, the high temperature method in base metal cavity ordinary, plus special centrifugal process, in general the parent material evenly to a special alloy material is melted and coated on the base metal, and according to the special requirements of users, with a different formula to achieve the best the effect of this alloy in uniform coating on the base metal without cracks, holes, impermeable, alloy layer thickness can reach 1.5-2MM, the index of hardness can reach HRC59-64.