CN106216824B - A kind of high-performance welding processing of powder metallurgy chain wheel - Google Patents
A kind of high-performance welding processing of powder metallurgy chain wheel Download PDFInfo
- Publication number
- CN106216824B CN106216824B CN201610627087.4A CN201610627087A CN106216824B CN 106216824 B CN106216824 B CN 106216824B CN 201610627087 A CN201610627087 A CN 201610627087A CN 106216824 B CN106216824 B CN 106216824B
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- Prior art keywords
- welding
- powder metallurgy
- chain wheel
- stored energy
- tempering
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Classifications
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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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/26—Storage discharge welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of high-performance welding processing of powder metallurgy chain wheel, formings-sintering-heat treatment-stored energy welding welding；Wherein, it is welded as the stored energy welding welding carried out using stored energy welding bonding machine, once welds double tempering；Weldingvoltage 320-380V；It is tempered voltage 350-450V；Delay tempering (70-130) × 10MS；Squeeze time (180-220) × 10MS；Pressurization shifts to an earlier date (150-200) × 1MS；Pressing time (10-25) × 10MS；Postwelding keeps (8-20) × 10MS；Times of tempering 2 times；Air pressure 0.4-1.0Mpa.The present invention has pedestal with the steel disc without salient point on welding gasket as matrix using powder metallurgy chain wheel, by the special process method of stored energy welding, so that product reaches the requirement of welding performance and appearance.The processing method is to utilize to be stored in charge in the capacitor of certain capacity, welding torch is set to spark by wlding and workpiece, using primary welding double tempering, so that powder metallurgy chain wheel and steel disc be made to reach metallurgical bonding at instantaneous touch point position, intensity is high, and appearance is without burn.
Description
Technical field
A kind of powder metallurgy automobile parts technical field of the present invention, and in particular to high-performance welding of powder metallurgy chain wheel
Processing method.
Background technique
The weldability of powdered metal parts has expanded the application range of powder metallurgy, increases the possibility of production complex parts
Property.Most of powder metallurgy chain wheels can reach wanting for welding performance with the steel disc spot welding for carrying pedestal on welding gasket
It asks.But the welding steel disc that salient point and no salient point are carried on amount of powder metallurgy sprocket wheel is welded, common Welder
The requirement of welding performance is just not achieved in skill.There is the steel disc of salient point to pass through on most common powder metallurgy chain wheel and welding gasket
Intermediate frequency electric resistance welding is the most common production technology for realizing weldability.Existing resistance welding technology is exactly by combining workpiece
Pressure is applied by electrode afterwards, is heated to using the resistance fuel factor that electric current flows through work piece interface and adjacent domain generation
Fusing or mecystasis, are allowed to form metal bonding.Disadvantage is the technique in powder metallurgy chain wheel and steel disc weld nugget week
It encloses and easily forms angle, weld contraction generates biggish tensile stress in commonly welding cooling procedure, causes the tensile strength of connector
It is reduced with fatigue strength, or even is unable to complete welding process, and usually also need to increase tempering process after welding, increase system
This is caused, welding power consumption is higher, and piece surface has burn.
Summary of the invention
Goal of the invention: the deficiencies in the prior art are directed to, it is an object of the present invention to provide a kind of powder metallurgy chain wheels
High-performance welding processing solves intermediate frequency resistance welding technology and carries on salient point and welding gasket powder metallurgy chain wheel without salient point
Steel disc the welding procedure tensile strength and the low problem of fatigue strength that generate.
Technical solution: for achieving the above object, the technical solution adopted by the present invention are as follows:
A kind of high-performance welding processing of powder metallurgy chain wheel, technique are as follows: forming-sintering-heat treatment-energy storage
Weldering welding；Wherein, it is welded as the stored energy welding welding carried out using stored energy welding bonding machine, once welds double tempering；Weldingvoltage
320-380V；It is tempered voltage 350-450V；Delay tempering (70-130) × 10MS；Squeeze time (180-220) × 10MS；Pressurization
(150-200) × 1MS in advance；Pressing time (10-25) × 10MS；Postwelding keeps (8-20) × 10MS；Times of tempering 2 times；Gas
Press 0.4-1.0Mpa.
Powder metallurgy chain wheel, including sprocket wheel and welding gasket are welded with welded gasket on two sides of correspondence of sprocket wheel
Piece；The powder metallurgy matrix material of sprocket wheel: copper: 1 ~ 5%, nickel: 1 ~ 5%, molybdenum: 0 ~ 0.6%, carbon: 0 ~ 0.8%, impurity: 2% is maximum, iron:
Surplus.
Forming: the high-performance welding processing of the powder metallurgy chain wheel uses 160T using upper two lower three structures
Shaping press compression moulding sprocket wheel.
Sintering: the high-performance welding processing of the powder metallurgy chain wheel uses net belt type sintering furnace, sintering temperature
1100-1250 DEG C, sintering velocity 100-130mm/min.
Heat treatment: the high-performance welding processing of the powder metallurgy chain wheel uses case-hardening furnace, carburizing journey
Formula: carbon formula: 0.6-1.0；Temperature: 800-850 DEG C；Time: 1-2h.The process can be selected according to product actual demand.
The high-performance welding processing of powder metallurgy chain wheel of the invention has pedestal and weldering with powder metallurgy chain wheel
Steel disc of the connection pad on piece without salient point is matrix, by the special process method of stored energy welding, so that product reaches welding performance and outer
The requirement of sight.The processing method is so that welding torch is passed through wlding and workpiece wink using charge being stored in the capacitor of certain capacity
Between discharge, using primary welding double tempering, so that powder metallurgy chain wheel and steel disc be made to reach metallurgy at instantaneous touch point position
In conjunction with intensity is high, and appearance is without burn.
The utility model has the advantages that compared with prior art, the present invention, which has, enables pad to reach metallurgical bonding, tension is greatly promoted
The requirement of intensity and fatigue strength is welded as sparking, and consumes energy less and energy saving, will not generate large area high temperature, and after welding
Workpiece is indeformable, unannealed, workpiece surface is not damaged, weld seam is small, saves tempering process after welding, reduces the excellent of manufacturing cost
Gesture: in material selection, sintered metal product can be according to the different demands of client, and select or arrange in pairs or groups different formulas；Welded gasket
Piece can select unlike material according to customer demand；Certainly it is also not limited to sprocket wheel, other sintered metal products etc. also all may be used
The requirement of welding performance is realized to take the method for this patent.
Detailed description of the invention
Fig. 1 is the main view of powder metallurgy chain wheel；
Fig. 2 is the sectional view along A-A of Fig. 1.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further elaborated.Embodiment is sent out for illustrative and not limiting
It is bright.For any those of ordinary skill in this field it will be appreciated that these embodiments are not limit the invention in any way, it is appropriate to do
Modification and without prejudice to essence of the invention and deviate the scope of the present invention.
Embodiment 1
As depicted in figs. 1 and 2, powder metallurgy chain wheel, including sprocket wheel 1 and welding gasket 2, in two sides of correspondence of sprocket wheel 1
Welding gasket 2 is welded on face.The powder metallurgy matrix material of sprocket wheel 1: copper: 1 ~ 5%, nickel: 1 ~ 5%, molybdenum: 0 ~ 0.6%, carbon: 0 ~
0.8%, impurity: 2% is maximum, iron: surplus.Welding gasket 2 is steel disc (DC04).
Bonding machine type: stored energy welding bonding machine
The processing technology of the high-performance welding of the powder metallurgy chain wheel are as follows: forming-sintering-heat treatment-stored energy welding weldering
It connects.
Wherein, it shapes: using 160T shaping press compression moulding sprocket wheel 1 using upper two lower three structures.
Sintering: net belt type sintering furnace, 1100-1250 DEG C of sintering temperature, sintering velocity 100-130mm/min are used.
Heat treatment: case-hardening furnace, carburizing formula: carbon formula: 0.6-1.0 are used；Temperature: 800-850 DEG C；Time: 1-2h.
The process can be selected according to product actual demand.
Stored energy welding welding: stored energy welding bonding machine is used, double tempering is once welded.Classical welding parameter: weldingvoltage
320-380V；It is tempered voltage 350-450V；Delay tempering (70-130) × 10MS；Squeeze time (180-220) × 10MS；Pressurization
(150-200) × 1MS in advance；Pressing time (10-25) × 10MS；Postwelding keeps (8-20) × 10MS；Times of tempering 2 times；Gas
Press 0.4-1.0Mpa.The parameter can appropriate adjustment according to Product jointing performance requirement.
The advantage of the welding method: 1) intermediate frequency electric resistance welding tensile strength is 50-80kgf, uses tensile strength after stored energy welding
It is promoted to 300kgf MIN；2) it needs in addition to increase tempering process after electric resistance welding, increase manufacturing cost, and use stored energy welding can
Tempering parameter is welded with adjustment, just there is included tempering, is concurrently set as double tempering, to substantially increase the tension of product
Intensity also eliminates the cost of other increased tempering process；3) it generates heat when intermediate frequency electric resistance welding larger, energy consumption is high, is easy
Make workpiece deformation, burn and stored energy welding sparks and will not generate large area high temperature, and welded workpiece it is indeformable, it is unannealed,
Workpiece surface is not damaged, weld seam is small.
Although the present invention is described according to above-mentioned specific embodiment, invention thought of the invention is simultaneously not only limited
In the invention, any repacking with inventive concept will be all included in this patent scope of patent protection.
Claims (5)
1. a kind of high-performance welding processing of powder metallurgy chain wheel, which is characterized in that technique are as follows: at forming-sintering-heat
Reason-stored energy welding welding；Wherein, it is welded as the stored energy welding welding carried out using stored energy welding bonding machine, once welds double tempering；
Weldingvoltage 320-380V；It is tempered voltage 350-450V；Delay tempering (70-130) × 10MS；Squeeze time (180-220) ×
10MS；Pressurization shifts to an earlier date (150-200) × 1MS；Pressing time (10-25) × 10MS；Postwelding keeps (8-20) × 10MS；Tempering time
Number 2 times；Air pressure 0.4-1.0Mpa.
2. the high-performance welding processing of powder metallurgy chain wheel according to claim 1, which is characterized in that powder metallurgy
Sprocket wheel, including sprocket wheel (1) and welding gasket (2) are welded with welding gasket (2) on two sides of correspondence of sprocket wheel (1)；Chain
The powder metallurgy matrix material of wheel (1): copper: 1 ~ 5%, nickel: 1 ~ 5%, molybdenum: 0 ~ 0.6%, carbon: 0 ~ 0.8%, impurity: 2% is maximum, iron: remaining
Amount.
3. the high-performance welding processing of powder metallurgy chain wheel according to claim 1, which is characterized in that forming: adopt
160T shaping press compression moulding sprocket wheel (1) is used with two lower three structures.
4. the high-performance welding processing of powder metallurgy chain wheel according to claim 1, which is characterized in that sintering: adopt
With net belt type sintering furnace, 1100-1250 DEG C of sintering temperature, sintering velocity 100-130mm/min.
5. the high-performance welding processing of powder metallurgy chain wheel according to claim 1, which is characterized in that heat treatment:
Using case-hardening furnace, carburizing formula: carbon formula: 0.6-1.0；Temperature: 800-850 DEG C；Time: 1-2h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610627087.4A CN106216824B (en) | 2016-08-03 | 2016-08-03 | A kind of high-performance welding processing of powder metallurgy chain wheel |
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|---|---|---|---|
| CN201610627087.4A CN106216824B (en) | 2016-08-03 | 2016-08-03 | A kind of high-performance welding processing of powder metallurgy chain wheel |
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| CN106216824A CN106216824A (en) | 2016-12-14 |
| CN106216824B true CN106216824B (en) | 2018-12-14 |
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| CN201610627087.4A Active CN106216824B (en) | 2016-08-03 | 2016-08-03 | A kind of high-performance welding processing of powder metallurgy chain wheel |
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Families Citing this family (1)
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| WO2020104832A1 (en) * | 2018-11-19 | 2020-05-28 | Arcelormittal | Dual pass, dual anneal welding method for joining high strength steels |
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| CN101007352A (en) * | 2007-01-30 | 2007-08-01 | 扬州保来得科技实业有限公司 | Processing method of gear supporter in automatic gearbox of automobile |
| CN102039479A (en) * | 2010-12-20 | 2011-05-04 | 福建海峡科化股份有限公司 | Method for stored-energy welding of copper leg wire-nichrome wire |
| CN102401109A (en) * | 2011-11-25 | 2012-04-04 | 扬州保来得科技实业有限公司 | Special powder metallurgy gear wheel and preparation method thereof |
| CN104646970A (en) * | 2014-12-01 | 2015-05-27 | 李士斌 | Processing method of large chain wheel |
| DE102015002472A1 (en) * | 2015-02-27 | 2015-08-06 | Daimler Ag | Method for connecting components for a differential of a motor vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5860882A (en) * | 1996-01-31 | 1999-01-19 | Borg-Warner Automotive, Inc. | Process for manufacturing phased sprocket assemblies by capacitor discharge welding |
| JP2005273779A (en) * | 2004-03-24 | 2005-10-06 | Ishikawajima Harima Heavy Ind Co Ltd | Gear and spline member |
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2016
- 2016-08-03 CN CN201610627087.4A patent/CN106216824B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007352A (en) * | 2007-01-30 | 2007-08-01 | 扬州保来得科技实业有限公司 | Processing method of gear supporter in automatic gearbox of automobile |
| CN102039479A (en) * | 2010-12-20 | 2011-05-04 | 福建海峡科化股份有限公司 | Method for stored-energy welding of copper leg wire-nichrome wire |
| CN102401109A (en) * | 2011-11-25 | 2012-04-04 | 扬州保来得科技实业有限公司 | Special powder metallurgy gear wheel and preparation method thereof |
| CN104646970A (en) * | 2014-12-01 | 2015-05-27 | 李士斌 | Processing method of large chain wheel |
| DE102015002472A1 (en) * | 2015-02-27 | 2015-08-06 | Daimler Ag | Method for connecting components for a differential of a motor vehicle |
Non-Patent Citations (1)
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