Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of high-strength wear-resistant superalloy and its preparation method

A high-temperature alloy and high-strength technology, applied in the field of high-strength wear-resistant superalloy and its preparation, can solve the problems of material welding and processing difficulties, unfavorable wear resistance, application limitations, etc., and achieve good welding and processing performance, small grain size. , the effect of excellent wear resistance and corrosion resistance

Active Publication Date: 2019-05-07
CHINA HUANENG GRP CO LTD +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, higher carbon content often makes welding and processing of materials difficult, thus limiting its application
In addition, the addition of too high carbon content will lead to significant embrittlement of the material, which is not conducive to the further improvement of wear resistance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The heat-resistant steel material of this embodiment comprises by mass percentage: Fe: 18%, Cr: 17%, Ni: 19%, Ti: 3.5%, Al: 9.0%, Cu: 21%, Si: 9.0%, Mn: 3.5%, the balance is Co.

[0021] The preparation method of the present embodiment comprises the following steps:

[0022] 1) Raw material preparation: The ingredients include by mass percentage: Fe: 18%, Cr: 17%, Ni: 19%, Ti: 3.5%, Al: 9.0%, Cu: 21%, Si: 9.0%, Mn: 3.5 %, the balance is Co.

[0023] 2) Melting step: place the ceramic crucible and prepared raw materials in a vacuum melting furnace at the same time, and use a vacuum induction furnace at a vacuum degree not higher than 1.0×10 -4 Under MPa, the prepared alloy is smelted into alloy mother liquor, and when the alloy mother liquor is solidified, an electric arc is used to preheat the ceramic crucible at low power. After the alloy is completely solidified into an ingot, it is moved to a preheated ceramic crucible to prevent the alloy ingot from contacting wi...

Embodiment 2

[0027] A high-strength and wear-resistant superalloy, the alloy composition meets the following range requirements in terms of mass percentage: Fe: 15%, Cr: 14%, Ni: 22%, Ti: 4.0%, Al: 12%, Cu: 23%, Si: 7%, Mn: 3.0%, and the balance is Co.

[0028] A method for preparing a high-strength wear-resistant superalloy, comprising the following steps:

[0029] 1) Alloy preparation: prepare according to the above alloy composition;

[0030] 2) Melting: Put the prepared alloy in a vacuum melting furnace with a vacuum degree not higher than 1.0×10 -4 The alloy mother liquor is smelted under MPa, then refined by electroslag remelting process, cooled, after the alloy mother liquor is solidified into an ingot and before the ingot temperature reaches 900°C, the cooling rate is controlled not to exceed 15°C / min, and when the ingot temperature reaches 900°C After ℃, cool to room temperature at a cooling rate exceeding 10°C / min;

[0031] 3) High-temperature annealing: Introduce argon gas in...

Embodiment 3

[0033] A high-strength and wear-resistant superalloy, the alloy composition meets the following range requirements in terms of mass percentage: Fe: 20%, Cr: 20%, Ni: 17%, Ti: 2.0%, Al: 8%, Cu: 18%, Si: 12%, Mn: 5.0%, and the balance is Co.

[0034] A method for preparing a high-strength wear-resistant superalloy, comprising the following steps:

[0035] 1) Alloy preparation: prepare according to the above alloy composition;

[0036] 2) Melting: Put the prepared alloy in a vacuum melting furnace with a vacuum degree not higher than 1.0×10 -4 The alloy mother liquor is smelted under MPa, then refined by electroslag remelting process, cooled, after the alloy mother liquor is solidified into an ingot and before the ingot temperature reaches 900°C, the cooling rate is controlled not to exceed 15°C / min, and when the ingot temperature reaches 900°C After ℃, cool to room temperature at a cooling rate exceeding 10°C / min;

[0037] 3) High-temperature annealing: Introduce argon gas in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-strength abrasion-resistant high-temperature alloy and a preparation method thereof. The high-strength abrasion-resistant high-temperature alloy comprises, by mass, 15-20% of Fe, 14-20% of Cr, 17-22% of Ni, 2.0-4.0% of Ti, 8-12% of Al, 18-23% of Cu, 7-12% of Si, 3.0-5.0% of Mn and the balance Co. The prepared alloy is smelted into alloy mother liquor, refining is carried out by adopting an electroslag remelting process, and cooling is carried out, namely the alloy mother liquor is solidified into an ingot and then cooled to the room temperature; and the ingot istaken out and then subjected to heat preservation at 900 DEG C for 30 min, and finally the ingot is cooled to the room temperature, so that the high-strength abrasion-resistant high-temperature alloyis obtained. The high-strength abrasion-resistant high-temperature alloy can be used in a cast state, and has good welding performance compared with a traditional abrasion-resistant material. In addition, the high-strength abrasion-resistant high-temperature alloy has superior corrosion resistance, and the hardness of the alloy is not lower than 800 HV.

Description

technical field [0001] The invention belongs to the field of high-temperature alloy materials, and in particular relates to a high-strength wear-resistant high-temperature alloy and a preparation method thereof. Background technique [0002] Wear is one of the three major failure modes of metal materials. Good wear-resistant materials often require excellent hardness and good toughness. At present, the commonly used wear-resistant metal materials mainly include high-chromium cast iron, nickel-hard cast iron, etc. The main feature is that the alloy contains high carbon content to promote the formation of large-sized eutectic carbides with a high volume fraction during the material forming process. However, higher carbon content often makes welding and processing of materials difficult, thus limiting its application. In addition, the addition of too high carbon content will lead to significant embrittlement of the material, which is not conducive to the further improvement of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/02C22C1/02C22B9/18C22F1/00
CPCC22B9/18C22C1/02C22C30/02C22F1/00
Inventor 严靖博袁勇鲁金涛赵新宝杨征张醒兴黄锦阳周永莉
Owner CHINA HUANENG GRP CO LTD