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A kind of cermet alloy powder block for overlay welding

A cermet and alloy powder technology, applied in the field of cladding cladding metal ceramic alloy powder and its preparation, can solve the problem of not involving the fatigue performance of surfacing metal, and achieve easy automatic surfacing, good toughness and crack resistance, The effect of grain refinement

Active Publication Date: 2019-11-19
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 improved, and the paper does not involve the fatigue performance of surfacing metal

Method used

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  • A kind of cermet alloy powder block for overlay welding
  • A kind of cermet alloy powder block for overlay welding
  • A kind of cermet alloy powder block for overlay welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] The formula of the cermet alloy powder block is calculated in parts by mass, the binder is 15, the plasticizer is 8, electrolytic metal manganese 4, 45# ferrosilicon 2, titanium iron 4, metal chromium 10, boron iron 38, graphite 3 , Vanadium iron 6, molybdenum powder 50, metal nickel powder 3, iron powder 8, nanometer titanium carbide powder 4, yttrium oxide powder 4. The particle size of the nano-titanium carbide powder is more than 99% less 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 silicate with a modulus of 3.0 and a degree of Baume of 50. The plasticizer is titanium dioxide.

[0091] (1) Ferroalloy Passivation Place 45# ferrosilicon, metal manganese, and metal chromium in a heat-resistant steel pan respectively, with a stacking thickness of 30mm, and stir 3 times during roasting. The process parameters of roasting are: 45# ferrosilicon...

Embodiment 2

[0098] The formula of the cermet alloy powder block is calculated in parts by mass, the binder is 10, the plasticizer is 2, the electrolytic metal manganese is 8, 45# ferrosilicon 6, titanium iron 2, metal chromium 5, boron iron 20, vanadium iron 2. Molybdenum powder 32, metal nickel powder 6, iron powder 2, nanometer titanium carbide powder 2, yttrium oxide powder 2. The particle size of the nano-titanium carbide powder is more than 99% less 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, its modulus is 2.8, and the Baume degree is 39. The plasticizer is white clay.

[0100] (1) Ferroalloy passivation Put 45# ferrosilicon, electrolytic manganese metal, and metal chromium in a heat-resistant steel pan respectively, with a stacking thickness of 40 mm, and ...

Embodiment 3

[0107] The formula of the cermet alloy powder block is calculated in parts by mass, and the binder is 5, electrolytic manganese metal 6, 45# ferrosilicon 5, ferrosilicon 3, metal chromium 8, ferroboron 30, ferrovanadium 5, molybdenum powder 42, Metal nickel powder 4, iron powder 6, nanometer titanium carbide powder 3, yttrium oxide powder 3. The particle size of the nano-titanium carbide powder is more than 99% less 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 silicate with a modulus of 2.9 and a Baume degree of 45.

[0109] (1) Ferroalloy passivation Put 45# ferrosilicon, electrolytic manganese metal, and metal chromium in a heat-resistant steel pan respectively, with a stacking thickness of 35mm, and stir 4 times during roasting. The process parameters of roasting are: 45# ferrosilicon at 750°C, keep warm for 1 hour, and cool with the furnace; elec...

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Abstract

The invention provides a ternary boride cermet Mo for overlay welding 2 FeB 2 The alloy powder block is composed of the following raw materials in parts by weight: 20-38 parts of ferroboron, 32-50 parts of molybdenum powder, 7-24 parts of iron powder, 2-4 parts of nanometer titanium carbide powder, and 2-4 parts of yttrium oxide powder. Using iron boron, molybdenum powder and iron powder as raw materials to synthesize Mo by metallurgical reaction 2 FeB 2 When adding an appropriate amount of nano-titanium carbide powder, in the welding metallurgy process, because the melting point of nano-titanium carbide powder is as high as 3140 ° C, it can be used as dispersed Mo in liquid metal 2 FeB 2 Non-spontaneous nucleation core, so that the formed ternary boride Mo 2 FeB 2 Dispersed distribution, so the surfacing metal has excellent high temperature hardness, wear resistance, good toughness and crack resistance. The steps are simple, the operation is convenient and the practicability is strong.

Description

technical field [0001] The invention belongs to the field of welding materials for surfacing welding, and in particular relates to a cermet alloy powder block for surfacing welding and its preparation method and application. 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 that the surface of mechanical equipment under the working conditions of high temperature and high pressure, high load, oxidation, and corrosion has good properties such as wear resistance, corrosion resistance, high temperature resistance, and oxidation resistance. Surfacing welding is widely used to prepare metal layers with special properties on the surface of parts because of its simple process, low equipment investment, flexible operation and wide adaptability. [0003] Surfacing methods include ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40C22C30/00C22C32/00C22C1/05C22C1/10B22F9/04B22F3/02B22F1/00
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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