Efficient diamond drill for repairing concrete sleeper and fabricating method thereof

A diamond drill bit and the technology of its manufacturing method are applied in the direction of manufacturing tools, stone processing tools, stone processing equipment, etc., and can solve the problems that the caliber size is not suitable for repairing concrete sleepers, the production efficiency is low, and it cannot be used to repair concrete sleepers. Achieve the effect of reducing diamond content, low production efficiency, and not easy to be oxidized

Inactive Publication Date: 2009-11-18
上海钻圣和新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] As we all know, there are also diamond drill bits for drilling and other purposes, but they cannot be used to repair concrete sleepers; the reasons are: 1) generally, diamond drill bits with higher carcass hardness components for hard rocks such as gra

Method used

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  • Efficient diamond drill for repairing concrete sleeper and fabricating method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] 1), Press: XDFD-50A automatic press, working pressure: 50T;

[0064] 2), control system: automatic control system matched with the press, pressure accuracy 0.1MPa, temperature accuracy (expressed by current) 5A;

[0065] 3) Graphite molds; machined into high-precision molds for sintering drill bits with Φ25mm and outer diameter Φ35mm;

[0066] 4) Diamond: GBD120 type high quality diamond. Particle size: 40 / 50 and 50 / 60 mixed particle size, each 50%;

[0067] 5) The diameter of the drill bit is made; the inner diameter is Φ25mm, and the outer diameter is Φ35mm;

[0068] 6) Pressing hardness of metal powder: Mix the metal powder of the aforementioned framework material and the metal powder of the bonding material to make the hardness of the compaction: HRC25-30 carcass;

[0069] 7) Sintering temperature: control at 860-900℃;

[0070] 8), heat preservation time under pressure: 15 minutes;

[0071] 9) Cooling: Generally, take it out for mechanical processing until the next morn...

Embodiment 2

[0075] 1), Press: XDFD-50A automatic press, working pressure: 50T;

[0076] 2), control system: automatic control system matched with the press, pressure accuracy 0.1MPa, temperature accuracy (expressed by current) 5A;

[0077] 3) Graphite mold; machined into a high-precision mold for drill sintering with an inner diameter of Φ30mm and an outer diameter of Φ40mm;

[0078] 4) Diamond: GBD120 type high quality diamond. The particle size is: 40 / 50 and 50 / 60 mixed particle size, the ratio is 60%:40%;

[0079] 5) The diameter of the drill bit is made; the inner diameter is Φ30mm, and the outer diameter is Φ40mm.

[0080] 6) Pressing hardness of metal powder: Mix the metal powder of the aforementioned framework material and the metal powder of the bonding material to make it into a carcass with a hardness of HRC30-35;

[0081] 7) Sintering temperature: control at 900-920℃;

[0082] 8), heat preservation time under pressure: 15 minutes;

[0083] 9) Cooling: Generally, take it out for mec...

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Abstract

The invention discloses an efficient diamond drill for repairing a concrete sleeper and a fabricating method thereof and relates to the technical field of drill fabrication. The efficient diamond drill solves the technical problems that the production efficiency is improved and the production cost is lowered during the fabrication of the diamond drill for repairing the concrete sleeper. The diamond drill comprises a drill base body and a drill labial part connected with the head end of the drill base body, the top end of the drill labial part is provided with a plurality of drill water gaps separating the top end of the drill labial part into a plurality of drill teeth. The efficient diamond drill is characterized in that a working layer of the drill labial part contains 18-30 weight percent of diamond, metallic bond of the working layer of the drill labial part consists of framework components and bonding components, the weight proportion of the framework components to the bonding components is 35:65 to 45:55, the framework components include WC, and the like; and the bonding components comprise Ni, Co, Mn, 663 bronze, and the like. The fabricating technique of the diamond drill has the characteristics of improving the production efficiency and lowering the production cost.

Description

Technical field [0001] The invention relates to drill bit manufacturing technology, in particular to a high-efficiency diamond drill bit used for repairing concrete sleepers of railways and mine tunnels. Background technique [0002] According to preliminary statistics, there are tens of thousands of large and small mines in China, and each mine has an average of 10 kilometers of mine tunnels. There will be hundreds of thousands of kilometers of mine tunnels nationwide. These mine tunnels have been immersed in groundwater for a long time and are easily damaged and must be repaired frequently. [0003] In addition, the total length of China's national railways will reach 75,000 kilometers by the end of 2008. It is planned that by 2010, the total length of railways will be increased by 20,000 kilometers to 95,000 kilometers. Second only to the United States and Russia, ranking third in the world. However, in 2006, my country's railways completed a quarter of the world's railway tra...

Claims

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Application Information

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IPC IPC(8): B28D1/14B23P15/28B22F3/16
Inventor 方啸虎温简杰
Owner 上海钻圣和新材料科技有限公司
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