CN110757027B - High-hardness chromium-molybdenum alloy welding material - Google Patents
High-hardness chromium-molybdenum alloy welding material Download PDFInfo
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- CN110757027B CN110757027B CN201911070116.1A CN201911070116A CN110757027B CN 110757027 B CN110757027 B CN 110757027B CN 201911070116 A CN201911070116 A CN 201911070116A CN 110757027 B CN110757027 B CN 110757027B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
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Abstract
The invention provides a high-hardness chromium-molybdenum alloy welding material, which comprises the following components in percentage by weight based on the total weight of the composition: c: 0.05 to 0.5 percent; si: 0.1 to 1.0 percent; mn: 0.5-1.5%; p: 0.01 to 0.05 percent; s: 0.001-0.01%; cr: 5 to 12 percent; ni: 0.01 to 0.05 percent; mo: 3 to 7 percent; al: 0.01 to 0.05 percent; co: 0.001-0.005%; nb: 0.1 to 0.5 percent; ti: 0.02-0.1%; v: 0.01 to 0.03 percent; w: 0.01 to 0.02 percent; cu: 0.01 to 0.06 percent; the balance of Fe and inevitable impurities. The welding material and the welding material composition provided by the invention have higher hardness and can be used for welding iron base materials.
Description
Technical Field
The present invention relates to a weld metal material, and more particularly to a weld metal material and a composition of the alloy.
Background
In the past half century, the fusion of laser technology, computer technology and new material technology has led to a new era of additive manufacturing (3D printing) technology. The additive manufacturing is a direct near-net forming technology without a mold, and is based on computer aided design/manufacturing, materials are solidified and clad layer by layer or stacked layer by layer and connected into an integral structure by block assembly welding, so that a personalized, customized and miniaturized production mode can be realized.
In terms of the physical concept of machining and manufacturing, welding is a typical example of additive manufacturing, and both a welding rod repair surfacing technology and a numerical control automatic welding technology and additive manufacturing based on a high-energy beam heat source belong to the field of generalized additive manufacturing. The technology basis for the rapid development of the additive manufacturing technology of metal components is the technical progress of taking high-energy beams (electron beams and laser beams) as special welding heat sources, the high-energy beams are very flexible, the energy can be accurately controlled, the high-energy beams are deeply fused with computer-aided design/manufacturing information technology, and metal wires or metal powder is filled into a focusing heating area or paved into the focusing heating area in a vacuum chamber or in an inert gas protection environment, so that the materials are melted and solidified and formed layer by layer.
The additive manufacturing essentially belongs to the field of material processing, commonly used additive manufacturing materials comprise engineering plastics, rubber materials, photosensitive resin, metal, ceramics and the like, wherein the 3D printing technology of the metal materials is developed particularly rapidly, and metal powder used in 3D printing generally requires high purity, good sphericity, narrow particle size distribution and low oxygen content. At present, the metal powder materials applied to 3D printing mainly include titanium alloys, cobalt-chromium alloys, stainless steel, aluminum alloy materials, and the like.
At present, the additive manufacturing of China already has some influential enterprises and brands in the fields of equipment, software and the like, but materials mainly depend on import, and the research and development of additive manufacturing materials with independent intellectual property rights have important significance.
Disclosure of Invention
The invention provides a metal material for welding and a composition of the metal material for welding.
In a first aspect, the present invention provides a composition of a high hardness chrome molybdenum alloy welding material, which comprises the following components in weight ratio based on the total weight of the composition:
C：0.05-0.5％；
Si：0.1-1.0％；
Mn：0.5-1.5％；
P：0.01-0.05％；
S：0.001-0.01％；
Cr：5-12％；
Ni：0.01-0.05％；
Mo：3-7％；
Al：0.01-0.05％；
Co：0.001-0.005％；
Nb：0.1-0.5％；
Ti：0.02-0.1％；
V：0.01-0.03％；
W：0.01-0.02％；
Cu：0.01-0.06％；
the balance of Fe and inevitable impurities.
The composition of the high-hardness chromium-molybdenum alloy welding material of the invention more preferably comprises the following components in weight ratio based on the total weight of the composition:
C：0.08-0.35％；
Si：0.3-0.8％；
Mn：0.8-1.0％；
P：0.02-0.03％；
S：0.005-0.008％；
Cr：8-10％；
Ni：0.02-0.04％；
Mo：4-7％；
Al：0.02-0.04％；
Co：0.001-0.003％；
Nb：0.2-0.4％；
Ti：0.04-0.08％；
V：0.015-0.025％；
W：0.01-0.015％；
Cu：0.03-0.05％；
the balance of Fe and inevitable impurities.
The composition of the high-hardness chromium-molybdenum alloy welding material of the invention more preferably comprises the following components in weight ratio based on the total weight of the composition:
C：0.08-0.35％；
Si：0.5-0.55％；
Mn：0.8-0.9％；
P：0.02-0.03％；
S：0.006-0.008％；
Cr：8-9.5％；
Ni：0.02-0.025％；
Mo：4-6％；
Al：0.025-0.03％；
Co：0.001-0.002％；
Nb：0.25-0.3％；
Ti：0.07-0.08％；
V：0.018-0.020％；
W：0.012-0.013％；
Cu：0.04-0.045％；
the balance of Fe and inevitable impurities.
The second aspect of the invention provides a high-hardness chromium-molybdenum alloy welding material, which comprises the following components in percentage by weight based on the total weight of the high-hardness chromium-molybdenum alloy welding material:
C：0.05-0.5％；
Si：0.1-1.0％；
Mn：0.5-1.5％；
P：0.01-0.05％；
S：0.001-0.01％；
Cr：5-12％；
Ni：0.01-0.05％；
Mo：3-7％；
Al：0.01-0.05％；
Co：0.001-0.005％；
Nb：0.1-0.5％；
Ti：0.02-0.1％；
V：0.01-0.03％；
W：0.01-0.02％；
Cu：0.01-0.06％；
the balance of Fe and inevitable impurities.
The high-hardness chromium-molybdenum alloy welding material preferably comprises a sheet and powder, wherein the powder is wrapped by the sheet in a winding mode. Preferably, the powder is entirely elemental powder, or at least comprises elemental powder.
In a preferred embodiment, the high-hardness chromium-molybdenum alloy welding material is in a strip shape and comprises a cylinder wound by the sheet, and the sheet wound into the cylinder wraps the center of the cylinder to form a core.
In a preferred embodiment, the sheet is spirally wound and the powder is located in a sandwich and/or a roll formed by the spirally wound sheet.
In a more preferred embodiment, the sheet is composed of Fe and unavoidable impurities, or Fe, unavoidable impurities, and a part of other components.
In the powder, Fe accounts for 4-20%, preferably 7-15%, more preferably 10-12% of the total weight of the high-hardness chromium-molybdenum alloy welding material, and the balance Fe is taken as a sheet.
In a preferred embodiment, the components, other than the sheet, are in the form of elemental powders.
In a preferred embodiment, the particle size of the elemental powder is preferably 50 to 250 mesh, preferably 60 to 200 mesh.
More preferably, the elemental powder described herein may be present in such a manner that a part of the powder has a particle diameter outside the above mesh number range, but the powder weight ratio outside this range cannot exceed 10%.
In a preferred embodiment, the sheet preferably has a thickness of 0.1 to 1mm, more preferably 0.2 to 0.7mm, more preferably 0.4 to 0.6 mm.
In a preferred embodiment, the diameter of the strip of high hardness chrome molybdenum alloy welding material is preferably 0.5-2.0mm, more preferably 0.8-1.8mm, more preferably 1.0-1.5mm, more preferably 1.2-1.3 mm.
Wherein, the particle diameters of any two elementary powders can be the same or different.
In the high-hardness chromium-molybdenum alloy welding material, based on the total weight of the high-hardness chromium-molybdenum alloy welding material, according to the weight proportion, more preferably, the high-hardness chromium-molybdenum alloy welding material comprises the following components:
C：0.08-0.35％；
Si：0.3-0.8％；
Mn：0.8-1.0％；
P：0.02-0.03％；
S：0.005-0.008％；
Cr：8-10％；
Ni：0.02-0.04％；
Mo：4-7％；
Al：0.02-0.04％；
Co：0.001-0.003％；
Nb：0.2-0.4％；
Ti：0.04-0.08％；
V：0.015-0.025％；
W：0.01-0.015％；
Cu：0.03-0.05％；
the balance of Fe and inevitable impurities.
In the high-hardness chromium-molybdenum alloy welding material, based on the total weight of the high-hardness chromium-molybdenum alloy welding material, according to the weight proportion, more preferably, the high-hardness chromium-molybdenum alloy welding material comprises the following components:
C：0.08-0.35％；
Si：0.5-0.55％；
Mn：0.8-0.9％；
P：0.02-0.03％；
S：0.006-0.008％；
Cr：8-9.5％；
Ni：0.02-0.025％；
Mo：4-6％；
Al：0.025-0.03％；
Co：0.001-0.002％；
Nb：0.25-0.3％；
Ti：0.07-0.08％；
V：0.018-0.020％；
W：0.012-0.013％；
Cu：0.04-0.045％；
the balance of Fe and inevitable impurities.
The high-hardness chromium-molybdenum alloy welding material and the composition of the high-hardness chromium-molybdenum alloy welding material have higher hardness and can be used for welding forged iron base materials, rolled steel materials and cast iron base materials.
Drawings
FIG. 1 is a schematic structural diagram of a high-hardness chrome-molybdenum alloy welding material with a cylindrical sheet.
Detailed Description
The high hardness chrome molybdenum alloy welding material provided by the invention and the composition of the high hardness chrome molybdenum alloy welding material are described by way of example below with reference to specific embodiments.
Example 1
As shown in fig. 1, the high hardness chrome molybdenum alloy welding material includes a sheet 1 wound in a cylindrical shape, and a core 2 located at the center of the cylinder. The sheet 1 wound in a cylindrical shape is wound around the core 2 at the center.
Wherein the sheet material is Fe and inevitable impurities. The core material includes C, Si, Mn, P, S, Cr, Ni, Mo, Al, Co, Nb, Ti, V, W, Cu, and it is understood that inevitable impurities may be included in the core material. Specifically, the proportion of each component of the core material in the total weight of the metal material is as follows:
C：0.08％；
Si：0.5％；
Mn：0.8％；
P：0.02％；
S：0.008％；
Cr：8％；
Ni：0.025％；
Mo：4.5％；
Al：0.025％；
Co：0.002％；
Nb：0.3％；
Ti：0.07％；
V：0.015％；
W：0.013％；
Cu：0.04％。
example 2
As shown in fig. 1, the high hardness chrome molybdenum alloy welding material includes a sheet 1 wound in a cylindrical shape, and a core 2 located at the center of the cylinder. The sheet 1 wound in a cylindrical shape is wound around the core 2 at the center.
Wherein the sheet material is Fe and inevitable impurities. The core material includes C, Si, Mn, P, S, Cr, Ni, Mo, Al, Co, Nb, Ti, V, W, Cu, and it is understood that inevitable impurities may be included in the core material. Specifically, the proportion of each component of the core material in the total weight of the metal material is as follows:
C：0.15％；
Si：0.55％；
Mn：0.85％；
P：0.02％；
S：0.008％；
Cr：8.5％；
Ni：0.025％；
Mo：5.5％；
Al：0.03％；
Co：0.02％；
Nb：0.3％；
Ti：0.075％；
V：0.018％；
W：0.013％；
Cu：0.045％。
example 3
As shown in fig. 1, the high hardness chrome molybdenum alloy welding material includes a sheet 1 wound in a cylindrical shape, and a core 2 located at the center of the cylinder. The sheet 1 wound in a cylindrical shape is wound around the core 2 at the center.
Wherein the sheet material is Fe and inevitable impurities. The powder comprises elementary powder of C, Si, Mn, P, S, Cr, Ni, Mo, Al, Co, Nb, Ti, V, W, Cu and the like. It should be understood that the powder may also contain unavoidable impurities. Specifically, the ratio of each component of the powder to the total weight of the metal material is as follows:
C：0.30％；
Si：0.55％；
Mn：0.85％；
P：0.02％；
S：0.007％；
Cr：9.5％；
Ni：0.022％；
Mo：6％；
Al：0.03％；
Co：0.02％；
Nb：0.3％；
Ti：0.08％；
V：0.018％；
W：0.012％；
Cu：0.042％。
the high-hardness chromium-molybdenum alloy welding material disclosed by the embodiment of the invention can be used for welding forged iron base materials, rolled steel materials and cast iron base materials. In the non-tempered and pre-heated condition, the post-weld hardness is shown in table 1, where current is 150A and voltage is 22V.
TABLE 1 Performance test results for high hardness chrome molybdenum alloy weld materials
| Example 1 | Example 2 | Example 3 | |
| HRC hardness (Single layer) | 50-55 | 50-55 | 50-55 |
| HRC hardness (two layers) | 48-55 | 48-55 | 48-55 |
| Surface smoothness | Is substantially smooth | Is substantially smooth | Is substantially smooth |
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (10)
1. A composition of high hardness chrome molybdenum alloy welding material, which is characterized by comprising the following components in percentage by weight based on the total weight of the composition:
C：0.05-0.5％；
Si：0.1-1.0％；
Mn：0.5-1.5％；
P：0.01-0.05％；
S：0.001-0.01％；
Cr：5-12％；
Ni：0.01-0.05％；
Mo：3-7％；
Al：0.01-0.05％；
Co：0.001-0.005％；
Nb：0.1-0.5％；
Ti：0.02-0.1％；
V：0.01-0.03％；
W：0.01-0.02％；
Cu：0.01-0.06％；
the balance of Fe and inevitable impurities.
2. The composition of high-hardness chromium molybdenum alloy welding material according to claim 1, which comprises the following components in weight ratio based on the total weight of the composition:
C：0.08-0.35％；
Si：0.3-0.8％；
Mn：0.8-1.0％；
P：0.02-0.03％；
S：0.005-0.008％；
Cr：8-10％；
Ni：0.02-0.04％；
Mo：4-7％；
Al：0.02-0.04％；
Co：0.001-0.003％；
Nb：0.2-0.4％；
Ti：0.04-0.08％；
V：0.015-0.025％；
W：0.01-0.015％；
Cu：0.03-0.05％；
the balance of Fe and inevitable impurities.
3. The composition of high-hardness chromium molybdenum alloy welding material according to claim 1 or 2, which comprises, in weight proportions based on the total weight of the composition:
C：0.08-0.35％；
Si：0.5-0.55％；
Mn：0.8-0.9％；
P：0.02-0.03％；
S：0.006-0.008％；
Cr：8-9.5％；
Ni：0.02-0.025％；
Mo：4-6％；
Al：0.025-0.03％；
Co：0.001-0.002％；
Nb：0.25-0.3％；
Ti：0.07-0.08％；
V：0.018-0.020％；
W：0.012-0.013％；
Cu：0.04-0.045％；
the balance of Fe and inevitable impurities.
4. The high-hardness chromium-molybdenum alloy welding material is characterized by comprising the following components in percentage by weight based on the total weight of the high-hardness chromium-molybdenum alloy welding material:
C：0.05-0.5％；
Si：0.1-1.0％；
Mn：0.5-1.5％；
P：0.01-0.05％；
S：0.001-0.01％；
Cr：5-12％；
Ni：0.01-0.05％；
Mo：3-7％；
Al：0.01-0.05％；
Co：0.001-0.005％；
Nb：0.1-0.5％；
Ti：0.02-0.1％；
V：0.01-0.03％；
W：0.01-0.02％；
Cu：0.01-0.06％；
the balance of Fe and inevitable impurities.
5. The high-hardness chromium-molybdenum alloy welding material as claimed in claim 4, wherein the high-hardness chromium-molybdenum alloy welding material comprises the following components in percentage by weight based on the total weight of the high-hardness chromium-molybdenum alloy welding material:
C：0.08-0.35％；
Si：0.3-0.8％；
Mn：0.8-1.0％；
P：0.02-0.03％；
S：0.005-0.008％；
Cr：8-10％；
Ni：0.02-0.04％；
Mo：4-7％；
Al：0.02-0.04％；
Co：0.001-0.003％；
Nb：0.2-0.4％；
Ti：0.04-0.08％；
V：0.015-0.025％；
W：0.01-0.015％；
Cu：0.03-0.05％；
the balance of Fe and inevitable impurities.
6. The high-hardness chromium-molybdenum alloy welding material as claimed in claim 4, wherein the high-hardness chromium-molybdenum alloy welding material comprises the following components in percentage by weight based on the total weight of the high-hardness chromium-molybdenum alloy welding material:
C：0.08-0.35％；
Si：0.5-0.55％；
Mn：0.8-0.9％；
P：0.02-0.03％；
S：0.006-0.008％；
Cr：8-9.5％；
Ni：0.02-0.025％；
Mo：4-6％；
Al：0.025-0.03％；
Co：0.001-0.002％；
Nb：0.25-0.3％；
Ti：0.07-0.08％；
V：0.018-0.020％；
W：0.012-0.013％；
Cu：0.04-0.045％；
the balance of Fe and inevitable impurities.
7. The high-hardness chromium-molybdenum alloy welding material as claimed in any one of claims 4 to 6, wherein the high-hardness chromium-molybdenum alloy welding material comprises a sheet and powder, and the powder is wrapped by the sheet in a winding manner; the powder is entirely elemental powder, or at least comprises elemental powder.
8. A high hardness chromium molybdenum alloy welding material according to claim 7, wherein said sheet is wound into a tube, and said powder is wrapped in the center of the tube by the sheet wound into a tube as a core.
9. A high hardness chromium molybdenum alloy welding material according to claim 7, wherein, in the composition, except for the sheet material, various or part of the composition is in the form of elemental powder.
10. The high-hardness chromium-molybdenum alloy welding material as claimed in claim 7, wherein the elementary powder has a particle size of 50-250 meshes.
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