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Preparation process of heat dissipation and abrasion resistance material

A preparation process and a technology for wear-resistant materials, applied in the field of heat-dissipating wear-resistant materials preparation technology, can solve the problems of difficulty in manufacturing wear-resistant parts, difficult and precise machining, etc., and achieve good shape and dimensional accuracy controllability, low operation difficulty, and sintering. low temperature effect

Active Publication Date: 2016-06-22
深圳晶弘新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the high hardness of wear-resistant materials, it is difficult to process precisely, so it is difficult to manufacture wear-resistant parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Step 1: Fe 2 o 3 , Mn 3 o 4 and ZnO according to the mass ratio of 100 / 21 / 23, mix evenly, and heat to 850 in the muffle furnace o C×60min pre-calcination, after cooling, crush and grind, and sieve with 200 mesh and 300 mesh sieve respectively to obtain (200~300) mesh pre-calcination.

[0014] Step 2: Mix the calcined material and 150-mesh FeSi6.5 powder evenly in a mass ratio of 10 / 100, add water to granulate, and mold it into a part blank under a pressure of ≥1500Mpa (the status of the part depends on the mold).

[0015] Step 3: The part blank is rapidly sintered into a finished part in an intermediate frequency induction heating furnace, the intermediate frequency induction heating frequency is 25kHz, the heating power is 4kW, and the heating is 5min. The parts after rapid sintering have high hardness (≥HRC50) and good heat transfer performance.

Embodiment 2

[0017] Step 1: Fe 2 o 3 , Mn 3 o 4 and ZnO according to the mass ratio of 100 / 21 / 23, mix evenly, and heat to 850 in the muffle furnace o C×60min pre-calcination, after cooling, crush and grind, and sieve with 200 mesh and 300 mesh sieve respectively to obtain (200~300) mesh pre-calcination.

[0018] Step 2: Pre-fired material and 150 mesh Fe78Si13B9 (the content is atomic percentage) amorphous powder (flaky) are mixed evenly at a mass ratio of 10 / 100, after adding water to granulate, molded into a part blank (part The status quo depends on the mold).

[0019] Step 3: The part blank is rapidly sintered into a finished part in an intermediate frequency induction heating furnace, the intermediate frequency induction heating frequency is 25kHz, the heating power is 4kW, and the heating is 5min. The parts after rapid sintering have high hardness (≥HRC52) and good heat transfer performance.

Embodiment 3

[0021] Step 1: Fe 2 o 3 , Mn 3 o 4 and ZnO according to the mass ratio of 100 / 21 / 23, mix evenly, and heat to 850 in the muffle furnace o C×60min pre-calcination, after cooling, crush and grind, and sieve with 200 mesh and 300 mesh sieve respectively to obtain (200~300) mesh pre-calcination.

[0022] Step 2: Mix the calcined material with 150 mesh Fe73.5Cu1Nb3Si13.5B9 (the content is atomic percentage) amorphous powder (flaky) at a mass ratio of 10 / 100, add water to granulate, and mold it under a pressure of ≥ 1500Mpa. Part blank (the status of the part depends on the mold).

[0023] Step 3: The part blank is rapidly sintered into a finished part in an intermediate frequency induction heating furnace, the intermediate frequency induction heating frequency is 25kHz, the heating power is 4kW, and the heating is 5min. The parts after rapid sintering have high hardness (≥HRC48) and good heat transfer performance.

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Abstract

The invention discloses a preparation process of a heat dissipation and abrasion resistance material. The material comprises the following ingredients of FeSi powder (comprising 6.0 wt%-10 wt% of Si and the balance Fe), Fe78Si(22-x)Bx amorphous powder (the content is the atomic percent and x is 9-15), Fe73.5Cu1Nb3Si13.5B9 amorphous powder (the content is the atomic percent), Fe2O3 raw materials, Mn3O4 raw materials and ZnO raw materials. The preparation process comprises three main steps of preparation of pre-sintered materials, preparation of a part blank and rapid sintering of the part blank. The preparation process has the advantages that (1) the prepared part is high in hardness, not prone to being damaged and high in percent of pass; (2) the powder is pressed and formed in a mould, the shape and size precision is good in controllability, and operation difficulty is low; and (3) the sintering temperature is low, and the requirement for a hearth is not high.

Description

technical field [0001] The invention relates to a process for preparing heat-dissipating and wear-resistant materials, and belongs to the technical field of preparation of wear-resistant materials. Background technique [0002] Wear-resistant materials occupy a considerable proportion in the entire energy and economic cost consumption in industrial fields such as building materials, thermal power generation, and metallurgical mines. Metal wear-resistant materials mainly include: high manganese steel, alloy steel, nickel hard cast iron, various white cast iron and high chromium cast iron, etc. [0003] Metal materials under the action of fluid are prone to erosion wear and corrosion. Such as jet mills, pipes and valves for conveying dust, quicksand pumps, etc. Such corrosion and wear account for more than 5% of industrial wear. Erosion wear corrosion is a phenomenon of metal damage caused by high-speed relative motion between the metal surface and the corrosive fluid, and ...

Claims

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Application Information

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IPC IPC(8): C22C33/02C22C45/02B22F3/10
CPCB22F3/006B22F3/10B22F2998/10C22C33/003C22C33/0228C22C45/02B22F1/0003B22F9/04B22F3/02
Inventor 朱正吼宋晖
Owner 深圳晶弘新能源科技有限公司
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