Method and apparatus for manufacturing and inspecting the quality of a matrix body drill bit
First Claim
1. In an infiltration method of producing a matrix body drill bit, an improvement comprising the steps of preparing a mold having a desired configuration and a small depression therein to receive a small amount of matrix material therein;
- adding the matrix material and an infiltrating alloy; and
heating the mold to melt the infiltrating alloy to form a matrix body forming a small, removable extension of matrix material on the matrix body within said small depression.
1 Assignment
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Accused Products
Abstract
Quality of a matrix body of a matrix body drill bit is tested by forming an extension of the matrix material near the nose of the matrix body drill bit. A notch is formed in a mold used to form the matrix body drill bit. The notch is filled with matrix powder during loading of the mold and subsequently infiltrated with binder alloy during infiltration of the matrix body. A matrix body extension is thus formed in the notch. The notch, and thus the matrix body extension, has a ratio of length versus diameter sufficiently high to allow the extension to be removed without permanently damaging the matrix body. The removed extension may then be subsequently tested.
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Citations
18 Claims
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1. In an infiltration method of producing a matrix body drill bit, an improvement comprising the steps of preparing a mold having a desired configuration and a small depression therein to receive a small amount of matrix material therein;
- adding the matrix material and an infiltrating alloy; and
heating the mold to melt the infiltrating alloy to form a matrix body forming a small, removable extension of matrix material on the matrix body within said small depression. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- adding the matrix material and an infiltrating alloy; and
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9. A non-destructive method of sampling infiltrated matrix body of an oil well drill bit comprising the steps of:
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preparing a mold having a desired configuration and a small depression therein; forming a small extension of matrix material on said body within said small depression; and removing said extension from the matrix body for quality analysis of the matrix material. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification