DIAMOND DRILL BIT AND METHOD OF PRODUCING A DIAMOND DRILL BIT
The diamond drill bit comprises a steel powder comprising iron in a non-zero proportion of up to 99.6% iron and carbon in a proportion between 0.03% and 2.14%, coated diamonds impregnated in the steel powder, and a metallic infiltrant alloy comprising copper and one of tin, silver and both tin and s...
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Zusammenfassung: | The diamond drill bit comprises a steel powder comprising iron in a non-zero proportion of up to 99.6% iron and carbon in a proportion between 0.03% and 2.14%, coated diamonds impregnated in the steel powder, and a metallic infiltrant alloy comprising copper and one of tin, silver and both tin and silver; wherein the diamond drill bit is produced by an infiltration process that comprises providing the steel powder to form the matrix; dispersing coated diamonds in the steel powder; compressing the matrix comprising the steel powder and the coated diamond at a cold-compression temperature; after the compressing, adding to the matrix an infiltrant alloy comprising copper and one of tin and silver; and heating the mixture of steel powder, coated diamonds and infiltrant alloy at a fusion temperature allowing the infiltrant alloy to melt, wherein the infiltrant alloy infiltrates the matrix and binds it. |
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