2results about How to "Tissue distribution" patented technology

The present application relates to a kind of crusher super wear-resistant cone lining plate steel and its preparation method, contains the following components by mass percentage: C:1.30-1.50%, Mn:22-25%, Si:0.35-0.80%, Cr:2.0-2.5%, V:0.1-0.15%, Ti:0.06-0.12%, N:0.05-0.08%, Mo:0.3-0.6%, P≤0.035%, S≤0.015%, the balance is Fe and inevitable impurities.Mass ratio of Mn / C is 16-18, mass ratio of Cr / V is 16-20, and total mass ratio of Cr+Mo≤2.8%.The hardness of steel can reach 289HB, impact toughness can reach 203J / cm 2 , tensile strength can reach 849MPa, reduce the mass addition of Ni, Mo and other elements, greatly reduce cost.

The utility model discloses a kind of concave hemispherical metal superhard grinding wheel forming die and sintering mould, the concave hemispherical metal superhard grinding wheel forming die includes mould frame and the upper pressing block in mould frame, lower pressing block;The upper pressing block is located above lower pressing block;The side of upper pressing block and abrasive layer contact is concave arc structure;The side of lower pressing block and abrasive layer contact is convex arc structure;The upper pressing block includes support, core rod;The inside wall of mould frame is stepped structure;The upper portion of support extends outward and forms lug;The lug is located on stepped structure;The height of stepped structure is consistent with the height of lug;Lower pressing block is set or not set with ring. The utility model can effectively avoid the large excess amount of concave hemispherical grinding wheel, solve the problem of raw material waste, cost increase in prior art, improve production efficiency, and there is no matrix when pressing, guarantee the compactness of abrasive layer organization and grinding wheel quality.