| Steel body diamond polycrystalline diamond compact (PDC) bit provided with protective layers on surf | |
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| Tweet Topic Started: Dec 2 2013, 05:16 AM (84 Views) | |
| yueke | Dec 2 2013, 05:16 AM Post #1 |
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A steel body diamond polycrystalline diamond compact (PDC) bit provided with protective layers on surfaces of knife blades comprises a bit body, the cutting tooth knife blades and the protective layers, wherein the bit body is provided with two to ten cutting tooth knife blades which are arranged from the upper portion to the top portion of the bit body, and each protective layer covers the surface of each cutting tooth knife blade. The steel body PDC bit provided with the protective layers on the surfaces of the knife blades has the advantages that steel bodies can be effectively protected, the protective layers are free of the phenomena of chip falling and fissure, the abrasive resistance of the bit is improved, the footage of the bit is deep when the bit is used, well drilling cost is saved, and the diamond PDC bit can be widely applied to petroleum drilling engineering. Knife wing surface with a protective layer of steel body diamond PDC bit technology [0001] The invention relates to oil drilling PDC bits, particularly relates to a knife blade surface with a protective layer of steel body diamond PDC bit. Background Art [0002] Currently, oil drilling steel body PDC bits, cutter in the cutting wing cladding layer of wear protection material, this way the various steel body PDC bits for oil exploration drilling projects contributed , but there are also shortcomings or deficiencies: ① wear protection material hardness is too high, easy to crack and fall off, affecting the quality of the diamond PDC bit. SUMMARY OF THE INVENTION [0003] The purpose of the utility model is to provide an improved cutter wing surface with a protective layer of diamond steel body PDC bits, using the cutter blade in the cutting of a new uniform cladding layer of protective material structure, effectively overcome or avoid the above disadvantages of the prior art or insufficient. [0004] This utility model the surface of the knife blade steel body with a protective layer of diamond PDC bits, including the bit body, cutting cutter blade, protective material layer. Said drill bit body has a 2-10 wing cutter knife, mounted on the upper part of the body to the top of the drill, the cutting cutter wing cladding layer of protective material layer. [0005], wherein the cutting cutter wing cladding layer of nickel silicon carbide powder, boron powder and mixed material layer of protection. [0006] This utility model compared with the prior art has the following advantages: [0007] a protective layer cladding material, the low hardness, toughness, and a protective layer does not fall off, no cracks. [0008] 2, the protective layer of tungsten carbide ingredient within the material, but also can increase, enhance the wear resistance of the protective layer. BRIEF DESCRIPTION OF DRAWINGS [0009] Figure 1 is a utility schematic structural diagram of one embodiment; [0010] Figure 2 is a plan view according to the structure shown in Figure 1 Fig. DETAILED DESCRIPTION [0011] Referring to Figure 1-Figure 2 A cutter wing surface with a protective layer of diamond steel body PDC bits, including drill body 1, the cutting cutter blade 2, the protective material layer 3. I bit body is provided with a cutter blade cutting 2-10 2, there is shown as four, I mounted on the upper part of the head main body to the top of the cutter of the cutting blade 2 cladding layer 3 is a layer of protective material. [0012] 2-wing cutter cutting surface cladding layer of nickel silicon carbide powder, boron powder and mixed material protective layer http://www.diamond-blade.org/ |
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7:33 PM Jul 11