Polycrystalline diamond-hard alloy composite rock breaking button down-the-hole bit and manufacturing process thereof

A polycrystalline diamond and cemented carbide technology, which is used in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of short life, material consumption, short life of crushed rock, etc., and achieve high impact resistance, long service life, The effect of high wear resistance

Inactive Publication Date: 2011-07-20
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Various down-the-hole drills are made of cemented carbide buttons embedded in metal steel bodies. When impacting and crushing soft rocks, they show high efficiency and long life, which can meet the requirements of rock crushing in engineering construction. When encountering rocks with high hardness, although the cemented carbide button also has a relatively high hardness, the cemented carbide button still wears quickly, which is characterized by short life and low efficiency, so that the cemented carbide button bit is seriously damaged. It affects the effect of rock breaking. In many hard formations such as granite, the life of impact rock breaking drill bits made of cemented carbide button

Method used

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  • Polycrystalline diamond-hard alloy composite rock breaking button down-the-hole bit and manufacturing process thereof
  • Polycrystalline diamond-hard alloy composite rock breaking button down-the-hole bit and manufacturing process thereof
  • Polycrystalline diamond-hard alloy composite rock breaking button down-the-hole bit and manufacturing process thereof

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] see figure 1 , figure 2 and image 3 , the steel body 4 of the down-the-hole drill bit is provided with a plurality of cemented carbide button bodies 1, four holes 3 are arranged on the cemented carbide button body 1, and a polycrystalline diamond short cylinder 2 is arranged in each hole 3, The length and diameter of the polycrystalline diamond short cylinder 2 are 1-50mm×φ1-φ30mm.

[0017] The polycrystalline diamond short cylinder 2 is obtained under the conditions of high temperature and high pressure by a synthetic diamond synthesis machine.

[0018] The cemented carbide button main body 1 used is manufactured by a special manufacturer or a cemented carbide manufacturer. The hole 3 in the cemented carbide button main body 1 is pre-formed during the production of the cemented carbide button main body 1, or through Obta...

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Abstract

The invention discloses a polycrystalline diamond-hard alloy composite rock breaking button down-the-hole bit and a manufacturing process thereof. The bit comprises a hard alloy button main body (1), and at least one polycrystalline diamond is arranged in the hard alloy button main body (1). The polycrystalline diamond is a polycrystalline diamond short cylinder (2) which is arranged in a hole of the hard alloy button main body (1); and the polycrystalline diamond short cylinder (2) has the length and diameter dimension of 1-50mm*phi 1-30mm. The manufacturing process comprises the following steps of: obtaining a down-the-hole bit steel body in needed dimension through a machining mode; fixing the hard alloy button main body of the polycrystalline diamond-hard alloy composite button in the hole of the down-the-hole bit steel body; and fixing the composite button of the down-the-hole bit steel body, performing post-treatment, inspecting the quality, packaging and discharging. Therefore, the manufactured polycrystalline diamond-hard alloy composite button down-the-hole bit has high capacity of impacting and breaking rocks.

Description

technical field [0001] The invention relates to a rock crushing button, in particular to a polycrystalline diamond-tungsten carbide composite rock crushing button with strong impact resistance and high wear resistance. Background technique [0002] Tungsten carbide button down-the-hole drill bit is an existing rock-breaking material. Compared with other down-the-hole drill bits made of metal materials, it has certain impact resistance and higher hardness. It is widely used as an industrial tooth for impacting and breaking rocks. [0003] Various down-the-hole drills are made of cemented carbide buttons embedded in metal steel bodies. When impacting and crushing soft rocks, they show high efficiency and long life, which can meet the requirements of rock crushing in engineering construction. When encountering rocks with high hardness, although the cemented carbide button also has a relatively high hardness, the cemented carbide button still wears quickly, which is characteriz...

Claims

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Application Information

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IPC IPC(8): E21B10/46E21B10/56
Inventor 张绍和胡程罗锦华杨昆吴晶晶
Owner CENT SOUTH UNIV
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