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Metal ceramic alloy powder for plasma arc surfacing

A technology of alloy powder and plasma arc, which is applied in the field of surfacing welding of hot work molds and cermet alloy powder for ion arc surfacing, which can solve the problems of limited research on cermet alloy powder, difficulty in designing cermet alloy powder, and metallurgical reaction time. Short and other problems, to achieve good high temperature oxidation resistance, excellent fatigue resistance, and the effect of short existence time of molten pool

Active Publication Date: 2018-12-11
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the high temperature and short metallurgical reaction time of plasma surfacing, its ternary boride Mo 2 FeB 2 The formation mechanism of sintering is different from that of sintering, and it is more difficult in the design of cermet alloy powder. At present, there are not many studies on cermet alloy powder for plasma surfacing welding.

Method used

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  • Metal ceramic alloy powder for plasma arc surfacing
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Mixing powder Weigh the powder according to the ratio of the powder formula, and Fe 2 B powder, molybdenum powder, metallic chromium, metallic nickel, graphite, ferrovanadium, ferrotitanium, electrolytic metal manganese, iron powder, nano-titanium carbide powder, yttrium oxide powder, and iron powder are mixed according to the formula ratio, and the existing Mix the powder with the powder mixer for 8 minutes to obtain the medicinal powder.

[0038] Wherein: the proportioning of the alloy powder is as follows in parts by mass: Fe 2 B powder 20, molybdenum powder 32, metal chromium 5, metal nickel powder 3, vanadium iron 2, titanium iron 4, electrolytic manganese metal 8, iron powder 9, nanometer titanium carbide powder 2, yttrium oxide powder 2. The average particle size of the nano-titanium carbide powder is 40 nanometers, and the particle size of other powders is 48 microns to 180 microns (that is, the particle size is -80 mesh to +300 mesh). The average particle...

Embodiment 2

[0042] (1) Mixing powder Weigh the powder according to the ratio of the powder formula, and Fe 2 B powder, molybdenum powder, metallic chromium, metallic nickel, graphite, ferrovanadium, ferrotitanium, electrolytic metal manganese, iron powder, nano-titanium carbide powder, yttrium oxide powder, and iron powder are mixed according to the formula ratio, and the existing Mix the powder with a powder mixer for 10 minutes to obtain the medicinal powder.

[0043] Wherein: the proportioning of the alloy powder is as follows in parts by mass: Fe 2 B powder 38, molybdenum powder 50, metal chromium 10, metal nickel powder 3, graphite 3, vanadium iron 6, titanium iron 4, electrolytic manganese metal 4, iron powder 9, nanometer titanium carbide powder 4, yttrium oxide powder 4. The average particle size of nano-titanium carbide powder is 40 nanometers, and the particle size of other powders is 48 microns to 180 microns (that is, the particle size is -80 mesh to +300 mesh);

[0044] (2)...

Embodiment 3

[0047] (1) Mixing powder Weigh the powder according to the ratio of the powder formula, and Fe 2 B powder, molybdenum powder, metallic chromium, metallic nickel, graphite, ferrovanadium, ferrotitanium, electrolytic metal manganese, iron powder, nano-titanium carbide powder, yttrium oxide powder, and iron powder are mixed according to the formula ratio, and the existing Mix the powder with the powder mixer for 9 minutes to obtain the medicinal powder.

[0048] Wherein: the proportioning of the alloy powder is as follows in parts by mass: Fe 2 B powder 30, molybdenum powder 41, metal chromium 7, metal nickel powder 5, graphite 2, vanadium iron 4, titanium iron 3, electrolytic manganese metal 6, iron powder 4, nanometer titanium carbide powder 3, yttrium oxide powder 3. The average particle size of nano-titanium carbide powder is 40 nanometers, and the particle size of other powders is 48 microns to 180 microns (that is, the particle size is -80 mesh to +300 mesh);

[0049] (2)...

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Abstract

The invention provides metal ceramic alloy powder for plasma arc surfacing. The metal ceramic alloy powder is composed of the following raw materials of, by weight, 20-38 parts of Fe2B, 32-50 parts ofmolybdenum powder, 3-9 parts of iron powder, 2-4 parts of nanometer titanium carbide powder and 2-4 parts of yttrium oxide powder. According to the abrasion-resistant heat-resistant metal ceramic alloy powder for plasma arc surfacing, Mo2FeB2 ternary boride is used as main hard phases, and martensite is used as a matrix. By adding nanometer titanium carbide powder and yttrium oxide powder to theiron-based powder, the Mo2FeB2 ternary boride hard phases are dispersed, the surfacing impurity content is reduced, the technical requirements such as the high temperature oxidation resistance, high abrasion resistance and high cleanliness and anti-fatigue performance cleanliness are met, and the metal ceramic alloy powder is suitable for surfacing of hot working dies.

Description

technical field [0001] The invention belongs to the field of welding materials, and in particular relates to a cermet alloy powder for plasma arc surfacing welding, which can be used for surfacing welding of hot work molds. Background technique [0002] Plasma arc surfacing is to use the plasma arc to melt the alloy powder as the surfacing material and deposit it on the surface of the workpiece to achieve the strengthening and hardening of the surface of the workpiece. Plasma arc surfacing has strong controllability of penetration depth, high deposition speed, and high productivity. After surfacing, the interface between the base material and the surfacing material is in a metallurgical bonded state. Advantages such as low rate. In addition, plasma arc surfacing has the advantages of being easy to realize mechanization and automation, conforms to the development trend of green manufacturing, and is increasingly widely used in manufacturing industries such as mold repair. ...

Claims

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Application Information

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IPC IPC(8): B23K35/30
CPCB23K35/3093
Inventor 孙俊生靳军王驰高进强曹永华栾守成于普涟
Owner SHANDONG UNIV
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