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Method of preparing abrasion-resistant layer on stainless steel surface through hot isostatic pressure powder-solid bonding method

A technology of hot isostatic pressing and wear-resistant layer, applied in the field of diffusion bonding, can solve the problems of low hardness, poor bonding strength, uneven material performance of wear-resistant layer, etc., and achieve the effect of uniform performance and high interface bonding strength

Active Publication Date: 2013-07-24
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a wear-resistant layer on the surface of stainless steel by hot isostatic pressing powder-solid connection method, which solves the problem of poor interface bonding strength of the wear-resistant layer prepared on the surface of stainless steel, uneven material properties of the wear-resistant layer, and hardness. Not advanced question

Method used

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  • Method of preparing abrasion-resistant layer on stainless steel surface through hot isostatic pressure powder-solid bonding method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: The method for preparing the wear-resistant layer on the surface of stainless steel by the hot isostatic pressing powder-solid connection method of the present embodiment is carried out according to the following steps:

[0014] 1. Ni60 alloy powder is prepared by known method, the chemical composition of main elements is 0.72% carbon, 3.29% boron, 3.83% silicon, 16.32% chromium, 3.3% iron, the balance is nickel, and the powder particle size is 45-109 μm.

[0015] 2. The base material is 0Cr18Ni10Ti, the chemical composition of the main elements is carbon 0.039%, silicon 0.58%, manganese 0.98%, phosphorus ≤ 0.035%, sulfur 0.02%, chromium 16.8%, nickel 10.16%, cobalt 0.05%, titanium 0.35%, and more The quantity is iron; the supply state is forged.

[0016] 3. The sheath is prepared by a known method, the base material and powder are put into the sheath, sealed and welded and degassed by a known method.

[0017] 4. The hot isostatic pressing process is a te...

Embodiment 2

[0018] Embodiment 2: Different from Embodiment 1 is step 1: adopt known method to prepare Ni60 alloy powder, main element chemical composition is carbon 0.94%, boron 4.1%, silicon 4.65%, chromium 18.4%, iron 14.3%, surplus is Nickel, the powder particle size is 45-109μm.

[0019] 2. The base material is 0Cr18Ni10Ti, the chemical composition of the main elements is carbon 0.039%, silicon 0.58%, manganese 0.98%, phosphorus ≤ 0.035%, sulfur 0.02%, chromium 16.8%, nickel 10.16%, cobalt 0.05%, titanium 0.35%, and more The quantity is iron, and the supply state is forging.

[0020] 3. The sheath is prepared by a known method, the base material and powder are put into the sheath, sealed and welded and degassed by a known method.

[0021] 4. The hot isostatic pressing process is a temperature of 920°C, a pressure of 110MPa, and a holding time of 1.5 hours.

Embodiment 3

[0022] Embodiment 3: The difference from the specific embodiment 1 is step 1: Ni60 alloy powder is prepared by a known method, and the chemical composition of the main elements is 0.81% carbon, 3.56% boron, 4.10% silicon, 17.23% chromium, 7.8% iron, and the balance It is nickel, and the powder particle size is 45-109 μm;

[0023] 2. The base material is 0Cr18Ni10Ti, the chemical composition of the main elements is carbon 0.039%, silicon 0.58%, manganese 0.98%, phosphorus ≤ 0.035%, sulfur 0.02%, chromium 16.8%, nickel 10.16%, cobalt 0.05%, titanium 0.35%, and other The quantity is iron, and the supply state is forging.

[0024] 3. The sheath is prepared by a known method, the base material and powder are put into the sheath, sealed and welded and degassed by a known method.

[0025] 4. The hot isostatic pressing process is a temperature of 950°C, a pressure of 120MPa, and a holding time of 1.8 hours.

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Abstract

The invention provides a method of preparing an abrasion-resistant layer on a stainless steel surface through a hot isostatic pressure powder-solid bonding method and belongs to the technical field of diffusion bonding. The method of preparing the abrasion-resistant layer on the stainless steel surface through the hot isostatic pressure powder-solid bonding method includes the following steps and the technical parameters: preparing Ni60 alloy powder through a three-dimensional mixer, wherein the powder mixing time lasts for 3-8 hours, preparing Ni60+10%TiB2 alloy powder, preparing NiCr / Cr2C3 alloy powder through the three-dimension mixer, wherein the power mixing time lasts for 3-8 hours, and preparing mixed powder of the Ni60 alloy powder and the NiCr / Cr2C3 alloy power, wherein the mixed power comprises 50% of Ni60 alloy powder and 50% of NiCr / Cr2C3 alloy power; using 0Cr18Ni10Ti as a substrate material, wherein the state of the substrate material is a forging state; applying hot isostatic pressure powder-solid diffusion bonding; and preparing single-face abrasion-resistant layer or double-face abrasion-resistant layer. The method of preparing the abrasion-resistant layer on the stainless steel surface through the hot isostatic pressure powder-solid bonding method has the advantages of being capable of replacing hardfacing, even in performance of the abrasion-resistant layer and high in strength of interface bonding. An interface abrasion-resistant layer prepared through the method achieves metallurgical bonding, the strength of the interface bonding can reach 420MPa, and the rigidity of the interface bonding can reach over 60 HRC.

Description

technical field [0001] The invention belongs to the technical field of diffusion connection, in particular to a method for preparing a wear-resistant layer on a stainless steel surface by a hot isostatic pressing powder-solid connection method. Background technique [0002] Stainless steel has good corrosion resistance, strength and plasticity. However, in harsh environments and complex working conditions, a single material can no longer meet the requirements in terms of performance and cost. For example, thrust discs for main pump rotors in the electric power field require parts to have a long service life, such as 50 to 60 years; in addition, excavators and crushers for mining machinery; rolls for steel rolling fields, etc., all require materials that not only have good strength And plasticity, but also has good wear resistance. The use of bimetallic materials can achieve a good combination of performance and cost. The preparation methods of bimetal materials include sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/04
Inventor 王铁军车洪艳刘国辉刘慧渊熊宁孙继洲徐进郭颖利
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD