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Brazed superhard abrasive tool and preparation method thereof

A superabrasive and brazing technology, which is applied in abrasives, manufacturing tools, metal processing equipment, etc., can solve the problems of poor spreading performance on the surface of the substrate, insufficient abrasive holding force, and easy agglomeration, so as to improve the wetting and spreading performance , reduce heat damage, reduce the effect of brazing temperature

Active Publication Date: 2017-05-31
FUNIK ULTRAHARD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape of copper-based brazing filler metal is powdery. After melting, the spreading performance on the surface of the substrate is not good, and it is easy to agglomerate, resulting in insufficient holding force on the abrasive, so the application is limited.

Method used

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  • Brazed superhard abrasive tool and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0033] Present embodiment brazing superabrasive tool, as figure 1 As shown, it includes a 65Mn steel keyhole saw blade substrate 4, a NiCr15 alloy nickel-based brazing filler metal layer 3 arranged on the substrate, a CuSn15Ti10 copper-based brazing filler metal layer 2 arranged on the surface of the nickel-based brazing filler metal layer, and a copper-based brazing filler metal layer embedded in a copper-based brazing filler metal layer. Diamond particles in the solder layer 1.

[0034] The preparation method of the brazing superabrasive tool of the present embodiment comprises the following steps:

[0035] (1) Take a 65Mn steel keyhole saw blade substrate with a size of 100mm×1.2mm×16mm and put it into 5% alcohol for ultrasonic cleaning for 2 minutes to remove oil stains and impurities on the surface of the substrate, and dry it for later use;

[0036] (2) Measure a 10mm wide ring-shaped working layer on the substrate, evenly coat a layer of stickers with a thickness of ab...

Embodiment 2

[0039] The brazing superabrasive material tool of this embodiment comprises No. 50 steel flat grinding disc base body, is arranged on the NiCr14B3Si5 alloy nickel-based solder layer of base body, is arranged on the CuSn15Ti10 copper-based solder layer on the surface of nickel-based solder layer, and embedding Cubic boron nitride in a copper-based solder layer.

[0040] The preparation method of the brazing superabrasive tool of the present embodiment comprises the following steps:

[0041] (1) Take the No. 50 steel flat grinding disc substrate whose size is 100mm×1.5mm×16mm and carry out sandblasting treatment (the sand is white corundum with a particle size of 60 mesh), and remove impurities such as rust spots on the surface of the substrate;

[0042] (2) Evenly coat a layer of 0.5mm thick self-adhesive on the working layer area of ​​the substrate, arrange a layer of 200-mesh NiCr14B3Si5 alloy solder on the surface of the self-adhesive, put it into a vacuum brazing furnace, a...

Embodiment 3

[0045] The brazing superabrasive material tool of present embodiment comprises 75Cr steel keyhole saw blade base body, is arranged on the NiCr15 alloy nickel base solder layer on the base body, is arranged on the CuSn15Ti10 copper base solder layer on the nickel base solder layer surface, and embedded Diamond in a layer of copper-based solder.

[0046] The preparation method of the brazing superabrasive tool of the present embodiment comprises the following steps:

[0047] (1) Take a 75Cr steel keyhole saw blade substrate with a size of 100mm×1.2mm×16mm and put it into 15% alcohol for ultrasonic cleaning for 3 minutes to remove oil stains and impurities on the surface of the substrate, and dry it for later use;

[0048] (2) Take a 10mm wide ring-shaped working layer on the substrate, evenly coat a layer of stickers with a thickness of about 1mm and 200 mesh NiCr15 alloy solder on the working layer area, put it into a vacuum brazing furnace, and under vacuum conditions, Raise ...

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Abstract

The invention belongs to the technical field of superhard material products, and particularly relates to a brazed superhard abrasive tool and a preparation method thereof. The brazed superhard abrasive tool comprises a substrate and a brazing filler metal layer arranged on the substrate. The brazing filler metal layer comprises a nickel-based brazing filler metal layer close to the substrate, and a copper-based brazing filler metal layer arranged on the surface of the nickel-based brazing filler metal layer. Superhard abrasive grains are embedded in the copper-based brazing filler metal layer. The thickness of the copper-based brazing filler metal layer is smaller than the grain size of the superhard abrasive grains. According to the brazed superhard abrasive tool, the substrate, nickel-based brazing filler metal, copper-based brazing filler metal and superhard abrasive composite structure is formed, the bonding strength between the substrate, the brazing filler metal and the superhard abrasive is improved, and meanwhile the brazing temperature is low, so that thermal damage to the superhard abrasive during brazing is reduced.

Description

technical field [0001] The invention belongs to the technical field of superhard material products, and in particular relates to a brazing superhard abrasive tool and a preparation method thereof. Background technique [0002] Brazing technology can achieve a high-strength chemical metallurgical bond between the substrate, brazing material and superabrasive. In brazed diamond tools, the diamond exposure height can reach 70% to 80%, so the grinding is sharp, the processing efficiency is high, and the service life is long. With incomparable advantages, it has broad market application prospects. [0003] At present, superabrasive tools in the prior art often include a substrate and a solder layer disposed on the substrate. Brazing filler metals for diamond tools are mainly divided into nickel-based filler metals and copper-based filler metals. Nickel-based brazing filler metal is prepared by atomization powder making process, and its shape is spherical or nearly spherical. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D7/00B24D18/00
CPCB24D7/00B24D18/009
Inventor 赵亚庆
Owner FUNIK ULTRAHARD MATERIAL
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