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A kind of vanadium carbide titanium cemented carbide and the drilling bit prepared therefrom and its preparation method

A technology of cemented carbide and vanadium-titanium carbide, which is applied in the field of cemented carbide drilling bits, can solve problems such as welding failure, complicated process, and drill bit damage, and achieve the effects of reducing consumption, cost, and cost of drill bits

Active Publication Date: 2015-08-05
CHENGDU TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this preparation method, the main part of the drill bit and the hard alloy blade part need to be formed separately, and then welded. Welding failure phenomenon resulting in the breakage of the entire drill bit

Method used

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  • A kind of vanadium carbide titanium cemented carbide and the drilling bit prepared therefrom and its preparation method
  • A kind of vanadium carbide titanium cemented carbide and the drilling bit prepared therefrom and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Vanadium carbide-titanium hard alloy, composition weight percentage: titanium carbide 64%, vanadium carbide 23%, and the balance is iron. Alloy hardness 90.8HRA.

Embodiment 2

[0035] Vanadium carbide-titanium hard alloy, composition weight percentage: titanium carbide 69.8%, vanadium carbide 20.2%, and the balance is iron. Alloy hardness 91.7HRA.

Embodiment 3

[0037] Calculate and weigh titanium carbide, vanadium carbide, graphite, and reduced iron powder. The components are represented by weight percentage: 77% of titanium carbide, 16% of vanadium carbide, and the balance is iron. Then put the above powder into a stainless steel ball mill jar, and perform ball milling on a planetary ball mill to mix the powder. The weight ratio of the ball to material is 10:1. Add absolute ethanol into the ball mill jar, and the absolute ethanol just completely submerges the powder. For 60 hours, the rotational speed of the ball mill was 180r / min. Pass the ground powder through a 320 mesh sieve and let it dry naturally. Then add a polyethylene glycol solution (PEG molecular weight 1450, solvent is absolute ethanol, concentration 22wt%) of 1% of the total mass of raw materials, fully stir to make it a pellet with a certain size and fluidity, and pass through a 45-mesh sieve . Put the above-mentioned pellets into a mould, press and form, the press...

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Abstract

The invention discloses a vanadium titanium hard alloy and a drilling bit prepared from the same. The vanadium titanium hard alloy comprises the following components: titanium carbide, vanadium carbide and the balance of iron and inevitable impurities. A vanadium titanium carbide alloy bit prepared from the vanadium titanium hard alloy disclosed by the invention does not adopt tungsten in a traditional bit preparation material, the consumption of strategic reserve resources is reduced, and the manufacturing cost of the bit is reduced. The bit preparation method disclosed by the invention adopts an integrated forming technology, obviously simplifies the preparation process of a drilling bit, and effectively reduces the bit cost.

Description

technical field [0001] The invention relates to a hard alloy drilling bit, in particular to a vanadium carbide titanium hard alloy drilling bit and a manufacturing method thereof. Background technique [0002] Due to the need to impact and break hard rock formations during oil drilling, the drill bit material used is usually high-strength diamond or cemented carbide. The cemented carbide material used in the drill bit in the prior art is mainly cobalt-bonded tungsten carbide cemented carbide, and its hardness is usually 84-94 HRA. Tungsten and cobalt are strategic reserve resources, and the reserves in the earth's crust are relatively small, and the price is high, which directly leads to the high cost of oil drilling bits. [0003] At the same time, the drill bits in the prior art mostly adopt the welding method of preparation: first, the main part of the drill bit is respectively cast with steel, and the cobalt-bonded tungsten carbide cemented carbide is prepared by powder...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/06B22F1/00B22F3/12B22D19/16
Inventor 王静伏思静邱士安罗建设
Owner CHENGDU TECH UNIV