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Low-melting point alloy adhesive for manufacturing deep-hole drilling bit

A low-melting-point, adhesive technology, applied in the direction of adhesives, etc., can solve the problem of unsatisfactory joint strength between 663 bronze and carcass metal and compound-wetting steel body, so as to achieve not easy to fall off accidents, high compressive strength and wear resistance corrosion resistance, good wettability effect

Inactive Publication Date: 2010-06-23
GUANGZHOU OZASIABIT IND
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AI Technical Summary

Problems solved by technology

Practice has proved that the wettability of 663 bronze and matrix metal and compound and the joint strength of steel body are not ideal, so it is not suitable for making deep hole and ultra-deep hole drill bits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Weigh 45% of Cu, 37% of Zn, 5% of Sn, 8% of In, 4.5% of Co and 0.5% of La respectively by weight, and put the weighed copper block into the medium frequency induction furnace to heat Add cobalt to the superheated melt, and lower the furnace temperature after it is fully melted. Then gradually add zinc, tin, indium and other weighed metals, and wait until all the elements are completely melted. After degassing, slag removal, refining, adding the rare earth element lanthanum and homogenizing, it is made into an alloy melt with a content of 45% Cu, 37% Zn, 5% Sn, 8% In, 4.5% Co, 0.5% La, and then Spray the melt into 200-400 mesh alloy powder in the atomizing device for later use.

[0017] In the reduced iron powder, cobalt powder, tungsten carbide powder and 400 mesh Cu-Zn-Si-In alloy powder with a weight ratio of 6:0.5:1.5:2, add synthetic diamond particles and 1% of the total weight of the forming agent in the ball mill well mixed. Put the mixture into the graphite mo...

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PUM

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Abstract

The invention relates to an adhesive for manufacturing drilling bit, in particular to a quaternionic low-melting point pre-alloyed adhesive. The low-melting point alloy adhesive for manufacturing a deep-hole drilling bit is formed by manufacturing Cu, Zn, Sn, In, other metallic elements and an additive by a conventional production method. The alloy has good covering capability for cutting elements, such as diamond, glomerocryst, composite films, and the like, has good wettability with matrix metal and compounds, and forms a high-strength composite material. The composite material can be firmly connected with a steel body, is suitably used as a diamond-impregnated bit for drilling, and is especially suitable for manufacturing deep holes and ultra deep-hole drilling bits under high temperature and pressure.

Description

【Technical field】 [0001] The invention relates to a binder for manufacturing drilling bits, in particular to a quaternary low melting point alloy binder. 【Background technique】 [0002] The drill bit for drilling is mainly composed of cutting element (diamond, polycrystalline, composite sheet, etc.) skeleton material, a crown made of a metal binder composite, and a steel body connected to the crown composite. Adhesives are the bonds that connect components. The nature of the binder has a great influence on the performance of the drill. [0003] US Patent No. 4,669,522 invented by Griffi Cu-P binary alloy as a bonding material, due to some metallurgical defects such as low bonding strength with the drill bit steel body, has not been used in practice. [0004] US Patent No. 5000273 Ralph et al. proposed Cu-Mn-Zn ternary alloy as the bonding alloy of the composite sheet drill bit, high manganese alloy, brittle, hard and easy to oxidize, which is not suitable for the requireme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/06C22C9/00C22C18/00C09J9/00
Inventor 彭星魁
Owner GUANGZHOU OZASIABIT IND
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