Melt casting type diamond drill bit

A diamond drill bit and drill bit technology are applied in drill bits, drilling equipment, earth-moving drilling, etc., and can solve the problems of unsuitable drilling and cutting of granite materials and low melting point.

Inactive Publication Date: 2008-06-18
于贵生
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AI Technical Summary

Problems solved by technology

Brazed diamond drill bit, because the brazing material currently used has a low melting point, it needs

Method used

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  • Melt casting type diamond drill bit

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Embodiment Construction

[0008] Such as figure 1 The fused-cast diamond drill bit shown is directly made a fused-cast trough (2) with a fused-cast trough frame (3) on the drill steel base (1), and puts prepared metal powder into the fused-cast trough (2) , the mixture (4) of silicon carbide and diamond particles is compacted and sent into a vacuum furnace or a gas-protected heating furnace. It is cast in a temperature range of 680°C-980°C for 5-8 minutes, and then it can be cooled naturally after being released from the furnace. After cooling, the casting frame (3) is removed by machining, and the drill pipe is welded on the matching port (5), so that the finished casting diamond drill bit is made.

[0009] According to the above-mentioned implementation technical scheme, diamond drill bits such as engineering thin-wall drills, geological drills, and deep well drills can be made. It saves energy and is sharper than the sintered type; it saves a lot of manufacturing time than the multi-layer electropl...

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Abstract

The invention provides a melt-casted diamond drill bit, belonging to the superhard material cutting tool technical field. The technical proposal of the invention is capable of producing melt-casted diamond core drill, diamond geological drill, diamond deep well drill, etc. compared with sintered diamond drill bit, the melt-casted diamond drill bit has manufacturing accuracy several times higher, and is wear resistant and sharp; compared with galvanized drill bit and brazed diamond drill bit, the melt-casted diamond drill bit has lower manufacture cost and longer service life; compared with dry drill, the abrasion resistance of the melt-casted diamond drill bit is several times higher; thereby, the melt-casted diamond drill bit is applicable for various drilling work, such as the drilling work in marbles, glasses, bituminous road surfaces, concrete road surfaces, reinforced concrete engineering components, and even in hard granitoid, and even harder and more brittle silicon crystal.

Description

Technical field: [0001] The patent melt-casting diamond drill bit belongs to the category of cutting tools for superhard materials. Background technique: [0002] At present, in the domestic and international markets, diamond drill bits, whether they are diamond engineering thin-wall drills used in engineering operations or diamond geological drills used in geological drilling, are all sintered diamond drill bits that use metal as a binder, or electroplated diamond drill bits. Diamond drill bits, or brazed diamond drill bits that use low-melting point metals as binders, each have their own advantages and disadvantages. For example, the sintered diamond drill bit with metal powder as binder is not only affected by the composition of the metal powder formula, but also has various factors such as sintering temperature, temperature rise and fall rate, length of holding time, and position in the furnace. The combined effect of the product, even if it is the same composition, the...

Claims

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Application Information

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IPC IPC(8): E21B10/46B22D19/02
Inventor 于贵生
Owner 于贵生
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