Metal-ceramic alloy powder block for build-up welding

A technology of cermet and alloy powder, which is applied in the field of surfacing welding cermet alloy powder block and its preparation, can solve the problems not related to the fatigue performance of surfacing metal, and achieve easy automatic surfacing, strong and sufficient metallurgical reaction, and high activity Effect

Active Publication Date: 2019-01-01
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its high-temperature hardness and wear resistance still need to be further

Method used

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  • Metal-ceramic alloy powder block for build-up welding
  • Metal-ceramic alloy powder block for build-up welding
  • Metal-ceramic alloy powder block for build-up welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] The formula of the cermet alloy powder is calculated in parts by mass, the binder is 15, the plasticizer is 8, the electrolytic metal manganese is 4, the 45# ferrosilicon is 2, the titanium iron is 4, the metal chromium is 10, the boron iron is 38, and the graphite is 3. , 6 iron vanadium, molybdenum powder 50, metal nickel powder 3, iron powder 8, nanometer titanium carbide powder 4, yttrium oxide powder 4. The particle size of nano titanium carbide powder is more than 99% smaller than 40 nanometers, and the particle size of other powders is 75 microns to 180 microns (that is, the particle size is -80 mesh to +200 mesh).

[0090] The binder is sodium water glass with a modulus of 3.0 and a degree of Baume of 50. The plasticizer is titanium dioxide.

[0091] (1) Passivation of iron alloys 45# ferrosilicon, metal manganese, and metal chromium were placed in heat-resistant steel plates respectively, with a stacking thickness of 30 mm, and stirred for 3 times during roast...

Embodiment 2

[0098] The formula of the cermet alloy powder is calculated in parts by mass, the binder is 10, the plasticizer is 2, the electrolytic metal manganese is 8, the 45# ferrosilicon is 6, the titanium iron is 2, the metal chromium is 5, the boron iron is 20, and the iron vanadium is 20. 2. Molybdenum powder 32, metal nickel powder 6, iron powder 2, nano-titanium carbide powder 2, yttrium oxide powder 2. The particle size of nano titanium carbide powder is more than 99% smaller than 40 nanometers, and the particle size of other powders is 75 microns to 180 microns (that is, the particle size is -80 mesh to +200 mesh).

[0099] The binder is potassium-sodium mixed water glass, the mass fraction of potassium is 2, the mass fraction of sodium is 1, the modulus is 2.8, and the Baume degree is 39. The plasticizer is white clay.

[0100] (1) Passivation of iron alloys 45# ferrosilicon, electrolytic metal manganese, and metal chromium were placed in heat-resistant steel trays with a stac...

Embodiment 3

[0107] The formula of the cermet alloy powder is calculated in parts by mass, and the binder is 5, electrolytic metal manganese 6, 45# ferrosilicon 5, titanium ferrous 3, metal chrome 8, ferroboron 30, ferrovanadium 5, molybdenum powder 42, Metal nickel powder 4, iron powder 6, nano-titanium carbide powder 3, yttrium oxide powder 3. The particle size of nano titanium carbide powder is more than 99% smaller than 40 nanometers, and the particle size of other powders is 75 microns to 180 microns (that is, the particle size is -80 mesh to +200 mesh).

[0108] The binder is sodium water glass with a modulus of 2.9 and a Baumé degree of 45.

[0109] (1) Passivation of iron alloys 45# ferrosilicon, electrolytic metal manganese, and metal chromium were placed in heat-resistant steel plates respectively, with a stacking thickness of 35mm, and stirred 4 times during roasting. The technical parameters of roasting are: 45# ferrosilicon at 750°C, holding for 1 hour, and cooling with the f...

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Abstract

The invention provides a ternary boride metal-ceramic Mo2FeB2 alloy powder block for build-up welding. The ternary boride metal-ceramic Mo2FeB2 alloy powder block is prepared from the following raw materials in parts by weight: 20-38 parts of iron boron, 32-50 parts of molybdenum powder, 7-24 parts of iron powder, 2-4 parts of nano-titanium carbide powder and 2-4 parts of yttrium oxide powder. When the iron boron, the molybdenum powder and the iron powder are used as raw materials for carrying out a metallurgical reaction so as to synthesize Mo2FeB2, an appropriate amount of the nano-titaniumcarbide powder is added; in a process of welding metallurgy, since the melting point of the nano-titanium carbide powder is as high as 3140 DEG C, the nano-titanium carbide powder can be used as a dispersed Mo2FeB2 non-spontaneous nucleation core in liquid metal, and the formed ternary boride Mo2FeB2 is enabled to be distributed in a dispersed way; therefore, the build-up welding metal has excellent high temperature hardness, wear resistance as well as good toughness and crack resistance. The steps are simple, the operation is convenient, and the practicality is high.

Description

technical field [0001] The invention belongs to the field of welding materials for surfacing welding, and in particular relates to a novel metal-ceramic alloy powder block for surfacing welding and a preparation method and application thereof. Background technique [0002] In industrial production and processing, mechanical parts often work under extremely complex and harsh conditions, and a large number of mechanical equipment are often scrapped due to wear, corrosion or abrasion. This requires the surface of mechanical equipment to have good wear resistance, corrosion resistance, high temperature resistance and oxidation resistance under the working conditions of high temperature and high pressure, under heavy load and oxidation, corrosion and other working conditions. Surfacing welding is widely used to prepare metal layers with special properties on the surface of parts due to its simple process, low equipment investment, flexible operation and wide adaptability. [000...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C32/00C22C1/05C22C1/10B22F9/04B22F3/02B22F1/00
CPCC22C1/1084C22C27/04C22C30/00C22C32/0005B22F3/02B22F9/04B22F2009/041B22F1/105
Inventor 孙俊生高进强温永策栾守成于普涟靳军赵乐平
Owner SHANDONG UNIV
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