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Rolling rock-breaking drill tooth coating material and diamond-tungsten carbide composite drill tooth preparation process

A cemented carbide and preparation technology, which is applied in the field of mining machinery and equipment, can solve the problem that cemented carbide drill teeth are difficult to drill through at one time, so as to improve impact force and crushing energy, increase affinity, and increase wear resistance Effect

Active Publication Date: 2016-06-15
BEIJING CHINA COAL MINE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the drilling depth continues to increase, and in industries such as hydropower and metal mines, the hardness of igneous rock is relatively high, and the content of quartz is relatively high. It is difficult for cemented carbide drill teeth to meet one-time drilling during the drilling process, and the hob needs to be replaced once in the middle. even many times

Method used

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  • Rolling rock-breaking drill tooth coating material and diamond-tungsten carbide composite drill tooth preparation process
  • Rolling rock-breaking drill tooth coating material and diamond-tungsten carbide composite drill tooth preparation process
  • Rolling rock-breaking drill tooth coating material and diamond-tungsten carbide composite drill tooth preparation process

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Experimental program
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Effect test

Embodiment 1

[0025] The coating material of the rolling rock-breaking drill tooth is composed of diamond and bonded matrix material, the particle size of the diamond is 40 mesh, and the quality of the diamond is 25% of the mass of the bonded matrix material; The matrix material is made up of the following components by weight: Co powder is 12 kg, Mn powder is 8 kg, Ni powder is 8 kg, CuSn10 powder is 25 kg, P powder is 2 kg and WC powder is 45 kg; Powder, Mn powder, Ni powder, CuSn10 and P powder have a particle size of 300 mesh, and WC powder has a particle size of 400 mesh.

[0026]The preparation process of diamond-tungsten carbide cemented carbide composite drill teeth includes the following steps: (a) Prepare materials: spherical drill teeth and the coating material of the rolling rock-breaking drill teeth, and use the cylinder surface under the ball head of the spherical drill teeth to The outer circle is polished. (b) Vacuum evaporation of titanium on diamond: Put diamond particles...

Embodiment 2

[0028] The coating material of the rolling rock-breaking drill tooth is composed of diamond and bonded matrix material, the particle size of the diamond is 35 mesh, and the quality of the diamond is 22% of the mass of the bonded matrix material; The matrix material is composed of the following components by weight: 10 kg of Co powder, 7 kg of Mn powder, 10 kg of Ni powder, 25 kg of CuSn10 powder, 2 kg of P powder and 42 kg of WC powder. The particle size of Co powder, Mn powder, Ni powder, CuSn10 and P powder is 230 mesh, and the particle size of WC powder is 460 mesh.

[0029] The preparation process of diamond-tungsten carbide cemented carbide composite drill teeth includes the following steps: (a) Prepare materials: spherical drill teeth and the above-mentioned rolling rock-breaking drill tooth coating material, the cylinder surface under the ball head of the spherical drill teeth Use the outer round to polish. (b) Vacuum evaporation of titanium on diamond: place diamond p...

Embodiment 3

[0031] The coating material of the rolling rock-breaking drill tooth is composed of diamond and bonded matrix material, the particle size of the diamond is 50 mesh, and the quality of the diamond is 23% of the mass of the bonded matrix material; The carcass material is composed of the following components by weight: Co powder is 15 parts by weight, Mn powder is 10 parts by weight, Ni powder is 7 parts by weight, CuSn10 powder is 20 parts by weight, P powder is 4 parts by weight and WC powder It is 42 parts by weight. The particle size of Co powder, Mn powder, Ni powder, CuSn10 and P powder is 325 mesh, and the particle size of WC powder is 325 mesh.

[0032] The preparation process of diamond-tungsten carbide cemented carbide composite drill teeth includes the following steps: (a) Prepare materials: spherical drill teeth and the above-mentioned rolling rock-breaking drill tooth coating material, the cylinder surface under the ball head of the spherical drill teeth Use the out...

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Abstract

The invention discloses a rock rolling breaking drill tooth coating material and a preparation technology of a diamond-tungsten carbide hard alloy composite drill tooth. The rock rolling breaking drill tooth coating material comprises diamond and a blank bonding material, the granularity of the diamond is in a range of 35-50 meshes and the mass of the diamond is 22-25% mass of the blank bonding material. The blank bonding material comprises, by weight, 10-15 parts of Co powder, 7-10 parts of Mn powder, 7-10 parts of Ni powder, 20-25 parts of CuSn10, 2-4 parts of P powder and 42-47 parts of WC powder. The preparation technology of the diamond-tungsten carbide hard alloy composite drill tooth comprises the following steps of a, material preparation, b, diamond vacuum vapor coating with titanium, c, mixed powder preparation, drying and glue addition, d, composite drill tooth pressing and drying and e, vacuum hot-pressing sintering.

Description

technical field [0001] The invention belongs to the field of mining machinery and equipment, and relates to rolling rock-breaking drill teeth, mainly a coating material for the drill teeth embedded in rolling rock-breaking drill bits such as hobs and roller cones, and a preparation process for diamond-tungsten carbide cemented carbide composite drill teeth. Background technique [0002] Rolling mechanical rock breaking is widely used in shaft drilling rigs, shaft boring machines, raise drilling rigs and other equipment in coal mines, hydropower, metallurgy and other fields. The rolling rock-breaking tool for medium-hard rock is an inlaid hob, and the drill teeth inlaid on the outer ring of the hob shell are the direct action points for rock-breaking, and its service life has a great impact on the entire rock-breaking efficiency. At present, the main inserts in China are cemented carbide drill teeth. During the drilling process, if the drill tooth wears out, it will take tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C26/00C22C30/04C22C32/00
Inventor 刘志强荆国业程守业李恩涛姜浩亮张广宇孙建荣谭昊徐广龙
Owner BEIJING CHINA COAL MINE ENG CO LTD
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