CN105397224A - Method for brazing hard alloy and steel by utilizing foam metal interlayer - Google Patents
Method for brazing hard alloy and steel by utilizing foam metal interlayer Download PDFInfo
- Publication number
- CN105397224A CN105397224A CN201511009356.2A CN201511009356A CN105397224A CN 105397224 A CN105397224 A CN 105397224A CN 201511009356 A CN201511009356 A CN 201511009356A CN 105397224 A CN105397224 A CN 105397224A
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- China
- Prior art keywords
- intermediate layer
- foam metal
- metal intermediate
- steel
- paillon foil
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
-
- 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
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
- B23K1/206—Cleaning
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a method for brazing hard alloy and steel, and particularly relates to a method for brazing hard alloy and steel by utilizing a foam metal interlayer. The method aims to solve the problem of easiness in generating cracks of the hard alloy due to large residual stress of a joint when the existing hard alloy is connected with the existing steel. The method comprises the steps of firstly, pretreating the hard alloy, the steel, a solder foil and a foam metal interlayer foil, then assembling pretreated materials, so as to obtain a to-be-brazed workpiece, and finally, performing vacuum brazing on the to-be-brazed workpiece, so that the method for brazing the hard alloy and the steel by utilizing the foam metal interlayer is completed. The method is used for brazing the hard alloy and the steel by utilizing the foam metal interlayer.
Description
Technical field
The present invention relates to the method for brazing hard alloy and steel.
Background technology
Carbide alloy has the features such as hardness is high, wear-resistant, corrosion-resistant, linear expansion coefficient is little, but because its toughness is poor, fragility is higher, standard machinery processing can not be carried out to it, therefore need carbide mosaic to be used in steel matrix the deficiencies such as solution carbide alloy cost is high, simple shape, size are limited, poor toughness.Because the thermal coefficient of expansion of carbide alloy is less, be generally 1/2 ~ 1/3 of steel, carbide alloy and steel postwelding, due to can not synchronous, can form very high residual stress in weld metal zone, cause carbide alloy to ftracture.
In all multi-methods alleviating carbide alloy and steel joint residual stress, dosing intermediate layer is one of effective method the most.When adopting individual layer intermediate layer (soft metal that many employing elastic modelling quantity are lower), because the fusing point of " soft metal " is all lower, the operating temperature of joint can be made to be very limited; Composite interlayer makes welding process complexity because cushion increases, cost increases, and makes cushion thickening, and the joint face increase in joint also makes its weak link increase.In addition, when adopting yielding intermediate layer, heat resistance and the intensity of joint are all under some influence; Gradient intermediate layer manufacturing process is complicated, and cost is increased.One intermediate layer simply and is efficiently worked out so need badly.
Summary of the invention
The present invention will solve the problem that when existing carbide alloy is connected with steel, joint residual stress greatly, easily makes carbide alloy crack, and provides a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel.
Utilize a method for foam metal intermediate layer brazing hard alloy and steel, specifically carry out according to following steps:
One, carbide alloy, steel, solder paillon foil and foam metal intermediate layer paillon foil are used sand papering respectively, then acetone ultrasonic cleaning 10min ~ 20min is used successively, natural air drying, obtains pretreated carbide alloy, pretreated steel, pretreated solder paillon foil and pretreated foam metal intermediate layer paillon foil;
Described foam metal intermediate layer paillon foil to be thickness the be nickel foam of 20 μm ~ 200 μm or thickness are 20 μm ~ 200 μm foam coppers;
Two, according to the assembled in sequence being followed successively by pretreated carbide alloy, pretreated foam metal intermediate layer paillon foil, pretreated solder paillon foil, pretreated foam metal intermediate layer paillon foil and pretreated steel from top to bottom, obtain workpiece to be welded, and on the carbide surface of workpiece to be welded, apply the pressure of 0.03MPa ~ 0.1MPa, obtain the workpiece to be welded after assembling;
Three, the workpiece to be welded after assembling is placed in vacuum brazing furnace, to vacuum brazing stove evacuation, to be then 5 DEG C with programming rate/vacuum brazing furnace temperature is warming up to 1000 DEG C ~ 1100 DEG C by min ~ 15 DEG C/min, and be incubated 5min ~ 30min under the condition of 1000 DEG C ~ 1100 DEG C in temperature, finally be cooled to room temperature, namely complete the method utilizing foam metal intermediate layer brazing hard alloy and steel.
The invention has the beneficial effects as follows:
Metal foam is a kind of new material, is made up of metallic framework and hole, and netted, the non-directional loose structure of its uniqueness makes it in stress-strain curves, have very long plastic strain platform, has significant ability absorption characteristic and shock resistance.The present invention does intermediate layer mainly through introducing foam metal, is promoted the formation of joint laminate solid solution tissue, and suppress the generation of joint frangible compounds by the interpolation in intermediate layer, is beneficial to the residual stress produced in releasing-joint and the intensity improving joint.To sum up the present invention has the following advantages:
1, the formation of joint laminate solid solution tissue is promoted by the interpolation of foam intermediate layer, and suppress the generation of joint frangible compounds, be beneficial to the residual stress produced in releasing-joint, strength of joint is improved, after tested, after the foam copper metal intermediate layer of adding different-thickness, YG6C and 16Mn joint 3 average strengths are 258MPa;
2, the present invention is by adding foam metal intermediate layer, efficiently solves the problem that when carbide alloy is connected with steel, residual stress is large, has promoted the application of carbide alloy.
3 the present invention are simple, efficient, and cost is lower, is beneficial to suitability for industrialized production.
The present invention is used for a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel.
Accompanying drawing explanation
Fig. 1 is the soldering schematic diagram that the present invention utilizes foam metal intermediate layer brazing hard alloy and steel, and 1 is pretreated carbide alloy, and 2 is pretreated foam metal intermediate layer paillon foil, and 3 is pretreated solder paillon foil, and 4 is pretreated steel.
Detailed description of the invention
Technical solution of the present invention is not limited to following cited detailed description of the invention, also comprises any combination between each detailed description of the invention.
Detailed description of the invention one: composition graphs 1 illustrates present embodiment, a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel described in present embodiment, specifically carry out according to following steps:
One, carbide alloy, steel, solder paillon foil and foam metal intermediate layer paillon foil are used sand papering respectively, then acetone ultrasonic cleaning 10min ~ 20min is used successively, natural air drying, obtains pretreated carbide alloy, pretreated steel, pretreated solder paillon foil and pretreated foam metal intermediate layer paillon foil;
Described foam metal intermediate layer paillon foil to be thickness the be nickel foam of 20 μm ~ 200 μm or thickness are 20 μm ~ 200 μm foam coppers;
Two, according to the assembled in sequence being followed successively by pretreated carbide alloy, pretreated foam metal intermediate layer paillon foil, pretreated solder paillon foil, pretreated foam metal intermediate layer paillon foil and pretreated steel from top to bottom, obtain workpiece to be welded, and on the carbide surface of workpiece to be welded, apply the pressure of 0.03MPa ~ 0.1MPa, obtain the workpiece to be welded after assembling;
Three, the workpiece to be welded after assembling is placed in vacuum brazing furnace, to vacuum brazing stove evacuation, to be then 5 DEG C with programming rate/vacuum brazing furnace temperature is warming up to 1000 DEG C ~ 1100 DEG C by min ~ 15 DEG C/min, and be incubated 5min ~ 30min under the condition of 1000 DEG C ~ 1100 DEG C in temperature, finally be cooled to room temperature, namely complete the method utilizing foam metal intermediate layer brazing hard alloy and steel.
The beneficial effect of present embodiment is:
1, the formation of joint laminate solid solution tissue is promoted by the interpolation of foam intermediate layer, and suppress the generation of joint frangible compounds, be beneficial to the residual stress produced in releasing-joint, strength of joint is improved, after tested, after the foam copper metal intermediate layer of adding different-thickness, YG6C and 16Mn joint 3 average strengths are 258MPa;
2, the present invention is by adding foam metal intermediate layer, efficiently solves the problem that when carbide alloy is connected with steel, residual stress is large, has promoted the application of carbide alloy.
3 the present invention are simple, efficient, and cost is lower, is beneficial to suitability for industrialized production.
Detailed description of the invention two: present embodiment and detailed description of the invention one unlike: the carbide alloy described in step one is YG8 or YG6C.Other is identical with detailed description of the invention one.
Detailed description of the invention three: one of present embodiment and detailed description of the invention one or two unlike: the steel described in step one is 40Cr or 16Mn.Other is identical with detailed description of the invention one or two.
Detailed description of the invention four: one of present embodiment and detailed description of the invention one to three unlike: the solder paillon foil described in step one is Cu
85mo
10co solder paillon foil or Cu
80mn
15ni solder paillon foil.Other is identical with detailed description of the invention one to three.
Detailed description of the invention five: one of present embodiment and detailed description of the invention one to four unlike: the foam metal intermediate layer paillon foil described in step one is thickness is 50 μm of foam coppers.Other is identical with detailed description of the invention one to four.
Detailed description of the invention six: one of present embodiment and detailed description of the invention one to five unlike: the foam metal intermediate layer paillon foil described in step one is thickness is 100 μm of foam coppers.Other is identical with detailed description of the invention one to five.
Detailed description of the invention seven: one of present embodiment and detailed description of the invention one to six unlike: the foam metal intermediate layer paillon foil described in step one is thickness is 200 μm of foam coppers.Other is identical with detailed description of the invention one to six.
Detailed description of the invention eight: one of present embodiment and detailed description of the invention one to seven unlike: will be then 5 DEG C with programming rate in step 3/vacuum brazing furnace temperature is warming up to 1000 DEG C ~ 1050 DEG C by min ~ 15 DEG C/min, and be incubated 5min ~ 30min under the condition of 1000 DEG C ~ 1050 DEG C in temperature.Other is identical with detailed description of the invention one to seven.
Detailed description of the invention nine: one of present embodiment and detailed description of the invention one to eight unlike: will be then 5 DEG C with programming rate in step 3/vacuum brazing furnace temperature is warming up to 1050 DEG C ~ 1100 DEG C by min ~ 15 DEG C/min, and be incubated 5min ~ 30min under the condition of 1050 DEG C ~ 1100 DEG C in temperature.Other is identical with detailed description of the invention one to eight.
Detailed description of the invention ten: one of present embodiment and detailed description of the invention one to nine unlike: be incubated 10min ~ 20min under the condition of 1000 DEG C ~ 1100 DEG C in step 3 and in temperature.Other is identical with detailed description of the invention one to nine.
Detailed description of the invention 11: one of present embodiment and detailed description of the invention one to ten unlike: be incubated 20min ~ 30min under the condition of 1000 DEG C ~ 1100 DEG C in step 3 and in temperature.Other is identical with detailed description of the invention one to ten.
Following examples are adopted to verify beneficial effect of the present invention:
Embodiment one:
A kind of method utilizing foam metal intermediate layer brazing hard alloy and steel described in the present embodiment, specifically carry out according to following steps:
One, carbide alloy, steel, solder paillon foil and foam metal intermediate layer paillon foil are used sand papering respectively, then acetone ultrasonic cleaning 15min is used successively, natural air drying, obtains pretreated carbide alloy, pretreated steel, pretreated solder paillon foil and pretreated foam metal intermediate layer paillon foil;
Described foam metal intermediate layer paillon foil is thickness is 100 μm of foam coppers;
Two, according to the assembled in sequence being followed successively by pretreated carbide alloy, pretreated foam metal intermediate layer paillon foil, pretreated solder paillon foil, pretreated foam metal intermediate layer paillon foil and pretreated steel from top to bottom, obtain workpiece to be welded, and on the carbide surface of workpiece to be welded, apply the pressure of 0.1MPa, obtain the workpiece to be welded after assembling;
Three, the workpiece to be welded after assembling is placed in vacuum brazing furnace, to vacuum brazing stove evacuation, then will be that vacuum brazing furnace temperature is warming up to 1020 DEG C by 15 DEG C/min with programming rate, and be incubated 15min under the condition of 1020 DEG C in temperature, finally be cooled to room temperature, namely complete the method utilizing foam metal intermediate layer brazing hard alloy and steel.
Carbide alloy described in step one is YG8;
Steel described in step one is 40Cr;
Solder paillon foil described in step one is Cu
80mn
15ni solder paillon foil.
On electronic universal tester, when rate of straining is 0.5mm/min, the average bending strength of YG8 and 40Cr joint is 564MPa after tested.
Embodiment two:
A kind of method utilizing foam metal intermediate layer brazing hard alloy and steel described in the present embodiment, specifically carry out according to following steps:
One, carbide alloy, steel, solder paillon foil and foam metal intermediate layer paillon foil are used sand papering respectively, then acetone ultrasonic cleaning 15min is used successively, natural air drying, obtains pretreated carbide alloy, pretreated steel, pretreated solder paillon foil and pretreated foam metal intermediate layer paillon foil;
Described foam metal intermediate layer paillon foil is thickness is 100 μm of foam coppers;
Two, according to the assembled in sequence being followed successively by pretreated carbide alloy, pretreated foam metal intermediate layer paillon foil, pretreated solder paillon foil, pretreated foam metal intermediate layer paillon foil and pretreated steel from top to bottom, obtain workpiece to be welded, and on the carbide surface of workpiece to be welded, apply the pressure of 0.1MPa, obtain the workpiece to be welded after assembling;
Three, the workpiece to be welded after assembling is placed in vacuum brazing furnace, to vacuum brazing stove evacuation, then will be that vacuum brazing furnace temperature is warming up to 1090 DEG C by 15 DEG C/min with programming rate, and be incubated 15min under the condition of 1090 DEG C in temperature, finally be cooled to room temperature, namely complete the method utilizing foam metal intermediate layer brazing hard alloy and steel.
Carbide alloy described in step one is YG6C;
Steel described in step one is 16Mn;
Solder paillon foil described in step one is Cu
85mo
10co solder paillon foil.
After tested, the present embodiment is after the foam copper metal intermediate layer of interpolation 100 μm of thickness, YG6C and 16Mn joint 3 intensity peaks are 356MPa, add by metal foam intermediate layer the residual stress alleviating carbide alloy and steel jointing, improve joint combination property.
Claims (10)
1. utilize a method for foam metal intermediate layer brazing hard alloy and steel, it is characterized in that it carries out according to following steps:
One, carbide alloy, steel, solder paillon foil and foam metal intermediate layer paillon foil are used sand papering respectively, then acetone ultrasonic cleaning 10min ~ 20min is used successively, natural air drying, obtains pretreated carbide alloy, pretreated steel, pretreated solder paillon foil and pretreated foam metal intermediate layer paillon foil;
Described foam metal intermediate layer paillon foil to be thickness the be nickel foam of 20 μm ~ 200 μm or thickness are 20 μm ~ 200 μm foam coppers;
Two, according to the assembled in sequence being followed successively by pretreated carbide alloy, pretreated foam metal intermediate layer paillon foil, pretreated solder paillon foil, pretreated foam metal intermediate layer paillon foil and pretreated steel from top to bottom, obtain workpiece to be welded, and on the carbide surface of workpiece to be welded, apply the pressure of 0.03MPa ~ 0.1MPa, obtain the workpiece to be welded after assembling;
Three, the workpiece to be welded after assembling is placed in vacuum brazing furnace, to vacuum brazing stove evacuation, to be then 5 DEG C with programming rate/vacuum brazing furnace temperature is warming up to 1000 DEG C ~ 1100 DEG C by min ~ 15 DEG C/min, and be incubated 5min ~ 30min under the condition of 1000 DEG C ~ 1100 DEG C in temperature, finally be cooled to room temperature, namely complete the method utilizing foam metal intermediate layer brazing hard alloy and steel.
2. a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel according to claim 1, is characterized in that the carbide alloy described in step one is YG8 or YG6C.
3. a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel according to claim 1, is characterized in that the steel described in step one is 40Cr or 16Mn.
4. a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel according to claim 1, is characterized in that the solder paillon foil described in step one is Cu
85mo
10co solder paillon foil or Cu
80mn
15ni solder paillon foil.
5. a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel according to claim 1, is characterized in that the foam metal intermediate layer paillon foil described in step one be thickness is 50 μm of foam coppers.
6. a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel according to claim 1, is characterized in that the foam metal intermediate layer paillon foil described in step one be thickness is 100 μm of foam coppers.
7. a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel according to claim 1, is characterized in that the foam metal intermediate layer paillon foil described in step one be thickness is 200 μm of foam coppers.
8. a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel according to claim 1, it is characterized in that in step 3 and will be 5 DEG C with programming rate/vacuum brazing furnace temperature is warming up to 1000 DEG C ~ 1050 DEG C by min ~ 15 DEG C/min, and be incubated 5min ~ 30min under the condition of 1000 DEG C ~ 1050 DEG C in temperature.
9. a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel according to claim 1, it is characterized in that in step 3 and will be 5 DEG C with programming rate/vacuum brazing furnace temperature is warming up to 1050 DEG C ~ 1100 DEG C by min ~ 15 DEG C/min, and be incubated 5min ~ 30min under the condition of 1050 DEG C ~ 1100 DEG C in temperature.
10. a kind of method utilizing foam metal intermediate layer brazing hard alloy and steel according to claim 1, is characterized in that being be incubated 10min ~ 20min under the condition of 1000 DEG C ~ 1100 DEG C in step 3 and in temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511009356.2A CN105397224A (en) | 2015-12-28 | 2015-12-28 | Method for brazing hard alloy and steel by utilizing foam metal interlayer |
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| CN201511009356.2A CN105397224A (en) | 2015-12-28 | 2015-12-28 | Method for brazing hard alloy and steel by utilizing foam metal interlayer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106270889A (en) * | 2016-09-19 | 2017-01-04 | 哈尔滨工业大学 | A kind of add the method that TC4 and Ceramic brazing performance are improved in foam copper intermediate layer |
| CN106862694A (en) * | 2017-04-06 | 2017-06-20 | 爱迪森自动化科技（昆山）有限公司 | A kind of method of functionally gradient material (FGM) method soldering stainless steel and hard alloy |
| CN111054928A (en) * | 2019-12-25 | 2020-04-24 | 西华大学 | Preparation method of hard alloy/steel welding part |
| CN113231706A (en) * | 2021-06-25 | 2021-08-10 | 哈尔滨工业大学 | Method for assisting in brazing dissimilar materials by using three-dimensional negative expansion network composite interlayer material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106270889A (en) * | 2016-09-19 | 2017-01-04 | 哈尔滨工业大学 | A kind of add the method that TC4 and Ceramic brazing performance are improved in foam copper intermediate layer |
| CN106862694A (en) * | 2017-04-06 | 2017-06-20 | 爱迪森自动化科技（昆山）有限公司 | A kind of method of functionally gradient material (FGM) method soldering stainless steel and hard alloy |
| CN106862694B (en) * | 2017-04-06 | 2019-05-24 | 哈尔滨工大华策科技有限公司 | A kind of method of the soldering of functionally gradient material (FGM) method stainless steel and hard alloy |
| CN111054928A (en) * | 2019-12-25 | 2020-04-24 | 西华大学 | Preparation method of hard alloy/steel welding part |
| CN111054928B (en) * | 2019-12-25 | 2022-03-08 | 西华大学 | Preparation method of hard alloy/steel welding part |
| CN113231706A (en) * | 2021-06-25 | 2021-08-10 | 哈尔滨工业大学 | Method for assisting in brazing dissimilar materials by using three-dimensional negative expansion network composite interlayer material |
| CN113231706B (en) * | 2021-06-25 | 2022-05-03 | 哈尔滨工业大学 | Method for assisting in brazing dissimilar materials by using three-dimensional negative expansion network composite interlayer material |
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