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Fecusn-based composite alloy powder for diamond products and preparation method thereof

A composite alloy, pre-alloyed powder technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of reducing sintering temperature, weakening the wearability of the carcass, and coarsening and growing powder sintered

Active Publication Date: 2021-05-18
HENAN HOLD DIAMOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention adds an appropriate proportion of Sn to the Fe-Cu binary water atomized pre-alloyed powder, which can significantly reduce the sintering temperature, weaken the wearability of the carcass, promote the rapid cutting of the diamond, and improve the sharpness of the diamond tool, but there is also sintering The carcass is prone to powder sintering coarsening and growth, which will cause the tendency to increase wear resistance due to the coarse grain of the carcass structure, which will affect the improvement of tool sharpness

Method used

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  • Fecusn-based composite alloy powder for diamond products and preparation method thereof
  • Fecusn-based composite alloy powder for diamond products and preparation method thereof
  • Fecusn-based composite alloy powder for diamond products and preparation method thereof

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Effect test

Embodiment 1

[0022] The preparation of embodiment 1 Fe-Cu-Sn pre-alloyed powder (1)

[0023]A medium frequency induction smelting furnace with a capacity of 250kg is used, the composition ratio is 64% Fe, 30% Cu, 6% Sn, and the furnace charge with a total weight of 200kg is prepared. The weight of raw materials is as shown in Table 1:

[0024] The raw material of table 1 embodiment 1 and feed intake weight ratio

[0025] raw material Fe block Electrolytic Cu plate Sn block gross weight Weight (kg) 128 60 12 200

[0026] Add Fe, Cu, and Sn to the medium-frequency induction furnace in turn, energize, melt and refine, add 0.2% carbon powder of the total weight of the smelt to deoxidize, adjust the superheat of the melt to 150-200°C, pour it into the tundish, and melt After the liquid passes through the leakage hole at the bottom of the bag, it is crushed by high-pressure water and atomized into powder in the atomization barrel filled with nitrogen protection. ...

Embodiment 2

[0029] The preparation of embodiment 2 Fe-Cu-Sn pre-alloyed powder (2)

[0030] A medium-frequency induction smelting furnace with a capacity of 250kg is used, and the composition ratio is 70% Fe, 26% Cu, and 4% Sn. The total amount of feed is 200kg, and the ratio of raw materials and weight is shown in Table 3 below:

[0031] The raw material of table 3 embodiment 2 and feed intake weight ratio

[0032] raw material Fe block Electrolytic Cu plate Sn block gross weight Weight (kg) 140 52 8 200

[0033] Add Fe, Cu, and Sn to the medium-frequency induction furnace in turn, energize, melt and refine, add 0.2% carbon powder of the total weight of the smelt to deoxidize, adjust the superheat of the melt to 150-200°C, pour it into the tundish, and melt After the liquid passes through the leakage hole at the bottom of the bag, it is crushed by high-pressure water and atomized into powder in the atomization barrel filled with nitrogen protection. Afte...

Embodiment 3

[0036] The preparation of embodiment 3 Fe-Cu-Sn pre-alloyed powder (3)

[0037] A 250kg intermediate frequency induction smelting furnace is used, the composition ratio is 69% Fe, 28% Cu, 3% Sn, and the total weight of the feed is 200 kg. The raw materials and feed weight are shown in Table 5:

[0038] The raw material of table 5 embodiment 3 and feeding weight proportioning

[0039] raw material Fe block Electrolytic Cu plate Sn block gross weight Weight (kg) 138 56 6 200

[0040] Add Fe, Cu, and Sn to the medium frequency induction furnace in turn, energize to melt and refine, add 0.2% carbon powder of the total weight of the smelt to deoxidize, adjust the superheat of the melt to 150-200°C, and pour it into the tundish. After passing through the leakage hole at the bottom of the bag, it is crushed by high-pressure water and atomized into powder in the atomization barrel filled with nitrogen protection. After atomization, the powder is fully ...

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Abstract

The FeCuSn-based composite alloy powder for diamond products and the preparation method thereof belong to the technical field of metal material powder metallurgy. The composition of FeCuSn-based composite alloy powder has Fe-Cu-Sn pre-alloyed powder and superfine additive powder; described superfine additive powder is Cr 3 C 2 or / and Mo 2 C, accounting for 1% to 5% of the total weight of the FeCuSn-based composite alloy powder. The three-component iron-based pre-alloy powder is prepared by high-temperature liquid melting and high-pressure water atomization, and then mixed evenly with ultra-fine additive powder. The present invention mainly uses Fe to reduce the production cost, the soft Cu phase is beneficial to improve the sharpness, and the low melting point Sn can promote sintering and densification to improve the sharpness of the tool; Cr 3 C 2 or / and Mo 2 The addition of C can significantly improve the sharpness of diamond tools and meet the engineering requirements of diamond products with sharpness as the core requirement.

Description

technical field [0001] The invention belongs to the technical field of metal material powder metallurgy, and in particular relates to the composition design, water atomization preparation method and ultrafine Cr 3 C 2 , Ultrafine Mo 2 Functional combined application between C. Background technique [0002] Diamond products are widely used in many application fields such as stone processing, ceramic processing, and building construction. Among them, the consumption of metal bond products accounts for about 85% of the total product consumption. Metal binders are mainly classified into iron-based, copper-based and cobalt-based according to their composition categories. Among them, cobalt-based binders have the best overall performance, but are also the most expensive. The prominent features of copper-based binders are fast heat conduction, easy wear and peeling, and promote the rapid cutting of diamonds, but they have poor wettability to diamonds, insufficient holding force,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/22C22C38/20C22C33/02B22F9/08B22F9/22B22F1/00
CPCC22C38/22C22C38/20C22C38/008C22C33/0278B22F9/082B22F9/22B22F2009/0828B22F2009/0844B22F2009/0848B22F1/05
Inventor 董书山李鹏旭徐航董欣然陶强朱品文
Owner HENAN HOLD DIAMOND TECH
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