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A composite brazing filler metal for superhard abrasive brazing, its preparation method, and brazing method

A technology of composite solder and superabrasives, applied in welding equipment, grinding/polishing equipment, grinding devices, etc., can solve the problems of low bond strength between diamond and matrix, easy shedding of diamond tools, and poor diamond grinding performance. Good and other problems, to achieve the effect of excellent grinding performance, good bonding strength, and excellent product quality

Active Publication Date: 2022-07-26
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For the superabrasive tools prepared in the existing industrial applications, especially the diamond abrasive tools, the bonding strength between the diamond and the substrate is not high, the prepared diamond tools are prone to fall off during the grinding process, and the grinding performance of the diamond is not good. , the invention provides a composite solder for diamond brazing, by optimizing the formulation of the solder to improve the grinding performance of diamond grinding tools

Method used

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  • A composite brazing filler metal for superhard abrasive brazing, its preparation method, and brazing method
  • A composite brazing filler metal for superhard abrasive brazing, its preparation method, and brazing method
  • A composite brazing filler metal for superhard abrasive brazing, its preparation method, and brazing method

Examples

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Effect test

Embodiment 1

[0058] A composite brazing filler metal for superabrasive brazing in this embodiment includes a CuSnTi alloy phase and a WC-enhanced phase, wherein the CuSnTi alloy phase includes 70% Cu, 20% Sn, and 10% Ti, and the WC enhances The addition amount of the phase is 15% of the volume percentage of the CuSnTi alloy phase, the particle size of the WC reinforced phase powder in this example is 50 μm, and the superabrasive is diamond.

[0059] The composite brazing filler metal of this embodiment is used to connect diamond and Q460 steel into one body by brazing to make a diamond grinding tool. Specifically, the preparation method of the composite brazing filler metal and the brazing method of this embodiment The steps are:

[0060] (1) Uniformly mix 70% Cu powder, 20% Sn powder and 10% Ti powder by mass percentage to obtain CuSnTi alloy phase;

[0061] (2) After adding the WC reinforcing phase with a volume percentage of 15% of the CuSnTi alloy phase to the CuSnTi alloy phase, put ...

Embodiment 2

[0067] The composite brazing filler metal used for superabrasive brazing in this example is basically the same as that in Example 1. The difference is that in this example, the amount of WC reinforcing phase added is 10% of the volume percentage of the CuSnTi alloy phase, and the particle size of WC is 40 μm, and the rotational speed of the ball milling treatment was 200 r / min.

Embodiment 3

[0069]The composite brazing filler metal used for superabrasive brazing in this example is basically the same as that in Example 1, except that: in this example, the addition amount of the WC reinforcing phase is 20% of the volume percentage of the CuSnTi alloy phase, and the particle size of WC is 45 μm, and the rotational speed of the ball milling treatment was 300 r / min.

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Abstract

The invention discloses a composite brazing material for superhard abrasive brazing, a preparation method thereof, and a brazing method, belonging to the field of superhard abrasive tool manufacturing. The composite brazing filler metal includes a CuSnTi alloy phase and a reinforcing phase. The components of the CuSnTi alloy phase and their mass percentages are respectively 70-75% Cu powder, 15-20% Sn powder and 5-10% Ti powder, and the reinforcing phase is WC One of powders or ZrC powders, wherein the volume percentage of the reinforcing phase in the CuSnTi alloy phase is 5% to 40%; first, the CuSnTi alloy phase and the reinforcing phase are mechanically mixed for a period of time, and then mixed with 5% acrylic acid and 95% acrylic acid. % p-xylene binder, placed between the superhard abrasive and the surface to be welded of Q460 steel, and then placed in a vacuum brazing furnace for vacuum brazing. The superhard abrasive tool prepared after brazing of the present invention is subjected to grinding experiments, and the superhard abrasive has higher holding force and better particle grinding effect.

Description

technical field [0001] The invention belongs to the field of superhard abrasive tool making, and in particular relates to a composite brazing material for superhard abrasive brazing, a preparation method thereof, and a brazing method. Background technique [0002] Superabrasives are often used to prepare grinding tools due to their ultra-high hardness, wear resistance and corrosion resistance. Diamond is a kind of superabrasives, which are mostly used in energy, aerospace machinery, metallurgy, electronics and wood. , stone processing and other industries, as the production of diamond tools is increasingly becoming more precise and efficient, it has triggered great attention from various industrial powers in this field. [0003] According to the processing theory, the processing performance of diamond grinding tools is determined by two aspects: on the one hand, the load-bearing capacity of the diamond, that is, the strength of the diamond and the ability of the bond to hold...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D18/00B23K35/40B23K1/00B23K1/008B23K1/20B23K3/06
CPCB23K35/40B23K35/302B23K1/0008B23K1/20B23K1/206B23K3/0607B23K1/008B24D18/0072B24D18/009
Inventor 徐东崔冰尹孝辉杨德张雷纠永涛丁天然程战
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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