CN103920960B - A kind of welding method of ferrous metal - Google Patents
A kind of welding method of ferrous metal Download PDFInfo
- Publication number
- CN103920960B CN103920960B CN201410181562.0A CN201410181562A CN103920960B CN 103920960 B CN103920960 B CN 103920960B CN 201410181562 A CN201410181562 A CN 201410181562A CN 103920960 B CN103920960 B CN 103920960B
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- CN
- China
- Prior art keywords
- ferrous metal
- welding method
- graphite
- solder
- metal welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- 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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0233—Sheets, foils
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Arc Welding In General (AREA)
- Ceramic Products (AREA)
Abstract
The invention provides a kind of ferrous metal welding method, comprise (I) and be greater than in carbon content in the graphite raw material particle of 90% and add high molecular polymer binder, strike out sheet, obtained sheet solder; (II) sheet solder being placed in ferrous metal treats between weldment, and then entirety is positioned in vacuum high-temperature environment, cools after soak.Adopt welding method of the present invention, black can be realized to belong between (of the same race, xenogenesis) material realize good welding, and owing to not needing technique welded part being done to any cleaning and special surface pre-treatment, reduce equipment investment, reduce process costs; Simultaneously due to solder graphite wide material sources, cost of material also can reduce.
Description
Technical field
The present invention relates to a kind of welding method of metal, the welding method particularly between ferrous metal.
Background technology
At present in metal industry field, usually metal is divided into ferrous metal class and non-ferrous metal class, ferrous metal mainly refers to iron, manganese, chromium and alloy thereof, as steel, the pig iron, ferroalloy, cast iron etc.The composite of ferrous metal is widely used due to function admirable, soldering is the important method realizing preparing ferrous metal composite, what generally adopt at present has reducing atmosphere and vacuum copper brazing technique, due between ferrous metal when soldering interface be difficult to stable fusion, there is soldering joint strength low, difficulty meets the needs of actual condition, be exactly need the removing surface cost of a large amount of equipment investments and high cost and cause production cost very high, and product size also limit by the size of vacuum brazing stove.
Summary of the invention
The present invention aims to provide a kind of effective welding realized between ferrous metal, improves strength of joint and effective method reducing soldering processes cost.The present invention is realized by following scheme:
A kind of ferrous metal welding method, comprises the following steps:
(I) carbon content is greater than the graphite raw material of 90%, through pulverizing---after classification, in graphite granule, add high molecular polymer binder, after through granulating---strike out sheet again, obtained sheet solder;
(II) above-mentioned sheet solder being placed in ferrous metal treats between weldment, and then entirety is positioned in vacuum high-temperature environment, after uniform temperature condition held for some time, and cooling; Described uniform temperature condition refers between the melting temperature of graphite and the lower melting point metal temperature treating weldment of melting temperature.Namely treat that weldment in the true temperature held under environment should be: higher than the melting point values of graphite solder, lower than the fusing point treating weldment ferrous metal, weldment is the ferrous metal that two kinds of melting point values are different if treat, then vacuum heat-preserving temperature should lower than the lower value of melting temperature.
Due under vacuum environment, graphite is not oxidizable, and the average grain diameter of the graphite granule therefore after described Ith step pulverizing is 10 ~ 50 μm.
The described preferred paraffin wax of high molecular polymer binder or/and rubber, to reduce costs.
The thickness preferably 0.05 ~ 0.1mm of described sheet solder.
Compared with prior art, the present invention has the following advantages:
1. welding method of the present invention, do not need technique welded part being done to any cleaning and special surface pre-treatment, even for being required all very low by the smooth degree of the face of weld, therefore not only processing step is optimized, and the equipment investment can saved for doing cleaning and surface pretreatment, reduce process costs.
2. the source of the graphite raw material adopted in the present invention widely, except native graphite, processing graphite goods etc., directly can also adopt the waste material of all kinds of graphite product or granular graphite.All kinds of metal solders adopted in more existing soldering processes, cost of material also can reduce.
3. black can be realized to belong between (of the same race, xenogenesis) material realize good welding, almost do not have weld seam, it is firm to weld;
Detailed description of the invention
embodiment 1
(I) carbon content is reached the native graphite of more than 99%, adopt mechanical ball grinding method to grind, then through screening---classification, being averaged particle diameter is 40 ~ 5
0 μmgraphite powder, then binder is added in graphite powder---rubber, then through granulating, punch press being struck out the sheet that thickness is 0.05 millimeter, obtains flake graphite solder.
(II) obtained flake graphite solder is placed in carbon steel---between the welded part of cast iron, formed and be similar to " sandwich " shape, and then entirety is positioned in vacuum drying oven, be heated to 1100 DEG C, be incubated more than 3 hours, come out of the stove after cooling, the good welds of two materials can be realized.Material after welding adopts ultrasonic examination inspection, find no weld defectiveness point, and after tested, plumb joint intensity can reach more than 350MPa.
embodiment 2
Method substantially the same manner as Example 1 is adopted to carry out soldering stainless steel---rich chromium cast iron, following parameter has difference: adopt the processing graphite wastes of carbon content more than 90% to make raw material, the graphite powder average grain diameter after grinding is 10 ~ 15 μm; The thickness of flake graphite solder is 0.095mm; Insulation is more than 10 hours.
Claims (5)
1. a ferrous metal welding method, it is characterized in that: comprise the following steps: carbon content is greater than the graphite raw material of 90% by (I), through pulverizing---after classification, in graphite granule, add high molecular polymer binder, after through granulating---strike out sheet again, obtained sheet solder; (II) above-mentioned sheet solder being placed in ferrous metal treats between weldment, and then entirety is positioned in vacuum high-temperature environment, when 1100 DEG C after held for some time, and cooling.
2. a kind of ferrous metal welding method as claimed in claim 1, is characterized in that: the average grain diameter of the graphite granule after described Ith step pulverizing is 10 ~ 50 μm.
3. a kind of ferrous metal welding method as claimed in claim 1 or 2, is characterized in that: the described preferred paraffin wax of high molecular polymer binder is or/and rubber.
4. a kind of ferrous metal welding method as claimed in claim 1 or 2, is characterized in that: the thickness preferably 0.05 ~ 0.1mm of described sheet solder.
5. a kind of ferrous metal welding method as claimed in claim 3, is characterized in that: the thickness preferably 0.05 ~ 0.1mm of described sheet solder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410181562.0A CN103920960B (en) | 2014-05-04 | 2014-05-04 | A kind of welding method of ferrous metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410181562.0A CN103920960B (en) | 2014-05-04 | 2014-05-04 | A kind of welding method of ferrous metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103920960A CN103920960A (en) | 2014-07-16 |
| CN103920960B true CN103920960B (en) | 2015-12-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410181562.0A Active CN103920960B (en) | 2014-05-04 | 2014-05-04 | A kind of welding method of ferrous metal |
Country Status (1)
| Country | Link |
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| CN (1) | CN103920960B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58199679A (en) * | 1982-05-14 | 1983-11-21 | Hitachi Ltd | Composite material |
| CN1394978A (en) * | 2002-08-02 | 2003-02-05 | 山东中实股份有限公司 | Instantaneous liquid-phase diffusion welding iron base amorphous interlayer alloy |
| CN1445046A (en) * | 2003-04-28 | 2003-10-01 | 西安交通大学 | Phase change-diffusion brass solder technique |
| CN101239419A (en) * | 2008-01-22 | 2008-08-13 | 西安交通大学 | Active transition liquid phase diffusion welding technique of metal-matrix composite material |
| CN101966629A (en) * | 2009-07-27 | 2011-02-09 | 中国石油天然气集团公司 | Nickel-based interlayer material suitable for instantaneous liquid phase diffusion welding |
-
2014
- 2014-05-04 CN CN201410181562.0A patent/CN103920960B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58199679A (en) * | 1982-05-14 | 1983-11-21 | Hitachi Ltd | Composite material |
| CN1394978A (en) * | 2002-08-02 | 2003-02-05 | 山东中实股份有限公司 | Instantaneous liquid-phase diffusion welding iron base amorphous interlayer alloy |
| CN1445046A (en) * | 2003-04-28 | 2003-10-01 | 西安交通大学 | Phase change-diffusion brass solder technique |
| CN101239419A (en) * | 2008-01-22 | 2008-08-13 | 西安交通大学 | Active transition liquid phase diffusion welding technique of metal-matrix composite material |
| CN101966629A (en) * | 2009-07-27 | 2011-02-09 | 中国石油天然气集团公司 | Nickel-based interlayer material suitable for instantaneous liquid phase diffusion welding |
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| Publication number | Publication date |
|---|---|
| CN103920960A (en) | 2014-07-16 |
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