High-strength drill rod for drilling titanium alloy tube plate and preparation method of high-strength drill rod

CN119304231APending Publication Date: 2025-01-14CHONGQING GENERAL IND (GRP) LTD
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Patent Information

Application Number
CN202411400863.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-09
Publication Date
2025-01-14

AI Technical Summary

Technical Problem

The existing titanium alloy pipe plate drilling equipment has problems such as excessive hole diameter, roundness and cylindricality. The split crown drill is poorly rigid during use, resulting in the metallurgical combination of the drill rod and the pipe plate, resulting in unqualified pipe holes. Even the pipe board is scrapped, and the processing cost is high.

Method used

High-strength drill rod made of coarse crystal carbide double helix internal cold rod material, including an integrated tool holder and tool rod part. The drill bit is fixed through the drill bit connection groove and threaded hole, and is subjected to deep cooling to improve Strength and rigidity, and through specific process steps such as ball milling, vacuum drying, waxing and sintering, a high-strength, low-cost drill rod is formed.

Benefits of technology

It solved the problem of the hole diameter and roundness not meeting the standards during the drilling process of titanium alloy pipe plate, improved the strength and rigidity of the drill rod, avoided the combination of drill rod and pipe plate metallurgy, reduced the processing cost, and realized the drilling of titanium alloy pipe plate Efficient processing of holes.

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Abstract

The invention belongs to the technical field of drilling equipment, and particularly discloses a high-strength drill rod for drilling a titanium alloy tube plate and a preparation method of the high-strength drill rod for drilling the titanium alloy tube plate, the high-strength drill rod is formed by processing a coarse-grain hard alloy double-helix inner-cooling bar and comprises a cutter handle clamping part and a cutter bar part which are integrally formed, and one side of the cutter bar part is detachably connected with a drill bit; a drill bit connecting groove and a first threaded hole are formed in the other side of the cutter bar part, and a second threaded hole corresponding to the first threaded hole is formed in the drill bit; inner cooling holes are correspondingly formed in the cutter handle clamping part and the cutter bar part, and an assembly hole is formed in the cutter handle clamping part. The drill rod is high in strength and rigidity, the problems that a split type drill rod is poor in rigidity, out of tolerance in hole diameter, substandard in roundness and cylindricity and the like are solved, meanwhile, the risk that pipe holes are unqualified and even pipe plates are scrapped due to metallurgical bonding of the drill rod and the pipe plates caused by abnormal abrasion of side blades of the drill tip is avoided, and the split type crown drill is suitable for drilling machining of the titanium alloy pipe plates. And therefore, the drilling machining cost of the titanium alloy tube plate is greatly reduced, and cost reduction and efficiency improvement are achieved.
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Citation Information

Patent Citations

  • Disposable drill bit

    CN108500350A

  • Single-hole limiting replaceable drill tip

    CN112809055A

  • Multifunctional clamping cutter bar

    CN114131084A

  • Inner-cooling lengthened spade drill with tool bit replaceable

    CN203900571U

  • Insertion piece type PCD auger bit

    CN215431694U