초록 ▼

“HARD ALLOYS WITH DRY COMPOSITION”, presenting a composition of alloy elements consisting, in mass percentage, of Carbon between 0.5 and 2.0; Chrome between 1.0 and 10.0; Tungsten-equivalent, as given by ratio 2Mo+W, between 7.0 and 14.0; Niobium between 0.5 and 3.5. Niobium can be partially or full

“HARD ALLOYS WITH DRY COMPOSITION”, presenting a composition of alloy elements consisting, in mass percentage, of Carbon between 0.5 and 2.0; Chrome between 1.0 and 10.0; Tungsten-equivalent, as given by ratio 2Mo+W, between 7.0 and 14.0; Niobium between 0.5 and 3.5. Niobium can be partially or fully replaced with Vanadium, at a ratio of 2% Niobium to each 1% Vanadium; Vanadium between 0.5 and 3.5. Vanadium can be partially or fully replaced with Niobium, at a ratio of 2% Niobium to each 1% Vanadium; Cobalt lower than 8, the remaining substantially Iron and impurities inevitable to the preparation process. As an option to refine carbides, the steel of the present invention can have content of Nitrogen controlled, below 0.030 and addition of Cerium or other earth elements at content between 0.005 and 0.020. For the same purpose, Silicon and Aluminum can be optionally added, at content between 0.5 and 3.0% for both of them.

대표청구항 ▼

1. Hard alloys with dry composition, having a chemical composition of elements consisting basically, as for mass percentage, of Carbon between 0.86 and 2.0, Chromium between 1.0 and 7.0, a Tungsten-equivalent, as given by ratio 2Mo+W, between 8.5 and 12.0, Niobium between 1.05 and 1.95, Vanadium bet

1. Hard alloys with dry composition, having a chemical composition of elements consisting basically, as for mass percentage, of Carbon between 0.86 and 2.0, Chromium between 1.0 and 7.0, a Tungsten-equivalent, as given by ratio 2Mo+W, between 8.5 and 12.0, Niobium between 1.05 and 1.95, Vanadium between 1.3 and 3.0, Silicon between 0.8 and 3.0, Aluminum between 1.6 and 3.0, Cobalt lower than 10.0, Manganese from traces to 0.5, Phosphorus at a maximum of 0.04, Sulfur at a maximum of 0.005, Nitrogen lower than 0.03, rare-earth elements or actinides or Hf, Rf, Ac from 0.005 to 0.2, the remaining alloy substantially of Fe and impurities inevitable to the preparation process, wherein the alloy is produced by casting ingots, which are hot forged or rolled to the final application sizes. 2. Hard alloys with dry composition, having a chemical composition of elements consisting basically, as for mass percentage, of Carbon between 0.9 and 1.5, Chromium between 3.0 and 6.0, a Tungsten-equivalent, as given by ratio 2Mo+W, between 9.0 and 11.0, Niobium between 1.2 and 1.9, Vanadium between 1.4 and 2.0, Silicon between 0.8 and 1.2, Aluminum between 1.6 and 2.0, Cobalt lower than 7.0, Manganese from traces to 0.5, Phosphorous at a maximum of 0.04, Sulfur at a maximum of 0.005, Nitrogen lower than 0.015, rare-earth elements or actinides or Hf, Rf, La, Ac from 0.01 to 0.1, the remaining alloy substantially of Fe and impurities inevitable to the preparation process, producing the alloy by casting ingots, which are not forged or rolled to the final application sizes. 3. Hard alloys with dry composition, having a chemical composition of elements consisting basically, as for mass percentage, of Carbon between 0.9 and 1.5, Chromium between 3.0 and 6.0, a Tungsten-equivalent, as given by ratio 2Mo+W, between 9.2 and 10.8, Niobium between 1.5 and 1.9, Vanadium between 1.5 and 2.0, Silicon between 0.8 and 1.2, Aluminum between 1.6 and 1.8, Cobalt lower than 7.0, Manganese from traces to 0.5, Phosphorus at a maximum of 0.04, Sulfur at a maximum of 0.005, Nitrogen lower than 0.01, rare-earth elements or actinides or Hf, Rf, La, Ac from 0.03 to 0.07, the remaining alloy substantially of Fe and impurities inevitable to the preparation process, the alloy produced by casting ingots of which are hot forged or rolled to the final application sizes. 4. Hard alloys with dry composition, in accordance with claim 1, having, in mass percentage, elements Titanium, Zirconium or Tantalum replacing partially Niobium or Vanadium, at a ratio where 1 part of Ti corresponds to 1 part of Vanadium or 0.5 parts of Niobium, and 1 part of Ta or Zr corresponds to 2 parts of Vanadium or 1 part of Niobium. 5. Hard alloys with dry composition, in accordance with claim 1, wherein the alloy is used in cutting and machining tools. 6. Hard alloys with dry composition, in accordance with claim 1, wherein the alloy is used in saws, whether they are fully formed by high-speed steel or the bimetallic type, with the bimetallic type of cutting parts made in high-speed steel only. 7. Hard alloys with dry composition, in accordance with claim 1, wherein the alloy is used in rotating cutting tools employed to machine metallic materials. 8. Hard alloys with dry composition, in accordance with claim 1, wherein the alloy is used in machining tools with a low working life expectancy and low productivity industrial tools and home use tools. 9. Hard alloys with dry composition, in accordance with claim 2, having, in mass percentage, elements Titanium, Zirconium or Tantalum replacing partially Niobium or Vanadium, at a ratio where 1 part of Ti corresponds to 1 part of Vanadium or 0.5 parts of Niobium, and 1 part of Ta or Zr corresponds to 2 parts of Vanadium or 1 part of Niobium. 10. Hard alloys with dry composition, in accordance with claim 3, having, in mass percentage, elements Titanium, Zirconium or Tantalum replacing partially Niobium or Vanadium, at a ratio where 1 part of Ti corresponds to 1 part of Vanadium or 0.5 parts of Niobium, and 1 part of Ta or Zr corresponds to 2 parts of Vanadium or 1 part of Niobium. 11. Hard alloys with dry composition, in accordance with claim 2, wherein the alloy is used in cutting and machining tools. 12. Hard alloys with dry composition, in accordance with claim 3, wherein the alloy is used in cutting and machining tools. 13. Hard alloys with dry composition, in accordance with claim 4, wherein the alloy is used in cutting and machining tools. 14. Hard alloys with dry composition, in accordance with claim 2, wherein the alloy is used in saws whether they are fully formed by high-speed steel or by bimetallic saws, with the bimetallic saws made in high-speed steel only. 15. Hard alloys with dry composition, in accordance with claim 3, wherein the alloy is used in saws whether they are fully formed by high-speed steel or by bimetallic saws, with the bimetallic saws made in high-speed steel only. 16. Hard alloys with dry composition, in accordance with claim 4, wherein the alloy is used in saws whether they are fully formed by high-speed steel or by bimetallic saws, with the bimetallic saws made in high-speed steel only. 17. Hard alloys with dry composition, in accordance with claim 2, wherein the alloy is used in rotating cutting tools employed to machine metallic materials. 18. Hard alloys with dry composition, in accordance with claim 3, wherein the alloy is used in rotating cutting tools employed to machine metallic materials. 19. Hard alloys with dry composition, in accordance with claim 4, wherein the alloy is used in rotating cutting tools employed to machine metallic materials. 20. Hard alloys with dry composition, in accordance with claim 2, wherein the alloy is used in machining tools with a low working life expectancy and low productivity industrial tools and home use tools. 21. Hard alloys with dry composition, in accordance with claim 3, wherein the alloy is used in machining tools with a low working life expectancy and low productivity industrial tools and home use tools. 22. Hard alloys with dry composition, in accordance with claim 4, wherein the alloy is used in machining tools with a low working life expectancy and low productivity industrial tools and home use tools.