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Method for enhancing drilling torque and wear resistance of patio drill stem and patio drill stem

A wear-resistant and drill pipe technology, which is applied in the field of drilling tools, can solve problems such as not being able to adapt to development requirements, and achieve the effects of overall performance improvement, efficiency improvement, and quick installation and disassembly

Active Publication Date: 2014-05-14
GUIZHOU GAOFENG GASOLINEEUM MACHINERY
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Problems solved by technology

[0002]With the development of mining in the world, the original tunneling method can no longer meet the current development requirements

Method used

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  • Method for enhancing drilling torque and wear resistance of patio drill stem and patio drill stem

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings, but not as any limitation to the present invention.

[0015] A method of increasing torque and wear resistance of raise drill pipe, such as figure 1 shown. The raise drill pipe of this method is processed into an integral drill pipe with an outer diameter φ of 287-292mm and an effective wall thickness of 45-50mm by using 4330V MOD alloy steel; After 6 hours, quenching; then tempering at 600~660°C to achieve the following comprehensive mechanical properties: tensile strength ≥ 1033Mpa, yield strength ≥ 964 Mpa, elongation ≥ 15%, reduction of area ≥ 45%, impact energy ≥ 90 J. The overall hardness value reaches 330 ~ 364HB; to improve the torque requirements and wear resistance requirements of the raise drill pipe.

[0016] The raise drilling pipe made by the aforementioned method, such as figure 1 shown. Including the rod body 1, the outer diameter φ ...

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Abstract

The invention discloses a method for enhancing drilling torque and wear resistance of a patio drill stem and a patio drill stem.4330VMOD alloy steel used as a patio drill stem material is subjected to heat treatment to enhance the comprehensive mechanical properties of the patio drill stem, thereby satisfying the technical requirements of the ever-developing drilling technique for high torque and high wear resistance of the patio drill stem. The patio drill stem is processed into a large-diameter thick-wall integral drill stem, thereby preventing the drill stem from bending and rupture due to the external force in the drilling process, prolonging the service life of the drill stem and enhancing the production efficiency of the mining enterprises. One end of the patio drill stem is provided with a three-end outer cone thread, and the other end is provided with a three-end inner cone thread; the part adjacent to the outer thread is provided with two square upper clamping grooves to ensure the accurate and quick buckling of the drill stem and the small screwing number; and the patio drill stem is quick and accurate to mount and demount, and enhances the efficiency. A plurality of drill stem components can be connected within the allowable strength range to reach the required length.

Description

Technical field [0001] The present invention involves a method of improving the torque and abrasion resistance of the patio rod, and the patio diamond rod, which belongs to the technology field of drilling drilling utensils. Background technique [0002] With the development of the world's mining to the deep, the original method of excavation has not been able to meet the existing development requirements.The drilling method for underground mines has been rapidly promoted in the digging of a variety of uses.In recent years, major manufacturing plants in foreign countries have created large torque and large rock drill drills for deep mining and tuning hard rocks. The power drilling machine has been developed from 75 kW to 750 kW.1500 m.Because the deep ore storage rock formation is hard and mostly polished, a small torque and extremely abrasion -resistant patio drill rod is required to support drilling. Invention content [0003] The purpose of the present invention is to provide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/08E21B17/00
Inventor 黄保黔胡卫宇陈文平兰键郑波强洪德强张发贵任杰李汇平
Owner GUIZHOU GAOFENG GASOLINEEUM MACHINERY
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