CN110653478A - Beryllium-copper alloy plate strip roll butt welding method - Google Patents
Beryllium-copper alloy plate strip roll butt welding method Download PDFInfo
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- CN110653478A CN110653478A CN201911025661.9A CN201911025661A CN110653478A CN 110653478 A CN110653478 A CN 110653478A CN 201911025661 A CN201911025661 A CN 201911025661A CN 110653478 A CN110653478 A CN 110653478A
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
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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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/12—Copper or alloys thereof
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Abstract
The invention relates to a beryllium copper alloy plate strip roll butt welding method, which is used for welding high-beryllium or low-beryllium alloy plates by adopting a rotary pressure welding process. According to the invention, the beryllium copper alloy plate strip is welded by adopting a rotary pressure welding process, so that the roll type butt welding of the thick-band plate strip is realized, the welding bonding strength of the thick-band plate strip is more than 90% of the matrix strength, the roll weight after butt welding can reach 3-4 tons per roll, and the production of the beryllium copper ultra-large roll is realized. By utilizing the welding technology, the head and tail geometric waste amount of the plate and strip can be effectively reduced (saved by 1-3%), the rolling yield of the product is improved (stably improved by 1-3%), and the energy consumption of the strip in the processes of roll annealing, rolling, reeling and unloading in the production process is effectively reduced.
Description
Technical Field
The invention belongs to the technical field of non-ferrous metal smelting, and particularly relates to a beryllium-copper alloy plate strip roll butt welding method.
Background
Beryllium copper, also known as beryllium bronze, is the "elastic king" of copper alloy, and can be subjected to solution aging heat treatment to obtain a product with high strength and high electrical conductivity. The high beryllium copper has the characteristics of high strength, high hardness, high conductivity, high elasticity, wear resistance, fatigue resistance, corrosion resistance, small elastic hysteresis and the like, and is mainly used for temperature controllers, mobile phone batteries, computers, automobile parts, micromotors, brush pins, high-grade bearings, contact elements, gears, punches and various sparkless switches. In the prior art, the welding of beryllium copper strip is mainly carried out in an argon arc welding or plasma beam welding mode, and the welding mode has the following technical defects: 1. the plate and strip materials are seriously deformed due to large input heat, and a heat affected zone is greatly increased, so that overheating and overburning are generated, and the welding quality is seriously influenced; 2. the strength and toughness of the welded plate strip interface can not meet the subsequent processing requirement of the foil.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the rolling butt welding method for the beryllium copper alloy plate strip, which avoids the deformation of the beryllium copper strip after welding, ensures that a welding bead has no cracks and no air holes, effectively improves the welding quality and strength, reduces waste materials, reduces energy consumption and has simple process.
The technical scheme adopted for realizing the purpose is as follows:
a beryllium-copper alloy plate strip roll butt welding method is characterized in that: and welding the high-beryllium or low-beryllium alloy plates by adopting a rotary pressure welding process.
The thickness of the high beryllium or low beryllium alloy plate is not less than 1.5mm and not more than 4.0 mm.
The specific process for welding the high-beryllium or low-beryllium alloy plate by adopting a rotary pressure welding process comprises the following steps:
1) the material roll 1 is uncoiled and centered to a coiling shaft, and the material tail stays at the inlet end of the double-edged shear; a material coil 2 is uncoiled, centered and fed to the outlet end of the double-edged shear;
2) after centering of the material roll 1 and the material roll 2 is determined, a piano key type pressing device is adopted for pressing;
3) cutting the material coil 1 and the material coil 2 by using a double-edged shear, and installing arc striking blocks at two ends of a cutting seam;
4) the material roll 2 is sent to be overlapped with the cut of the material roll 1, and the material roll 2 is compressed;
5) the welding rack integrally moves to a rotary pressure welding station, and the rotary pressure welding is started for welding;
6) after welding, moving a material coil welding seam to a crescent edge shear to cut off two end parts at the beginning and the end of welding;
7) adjusting the tension of the machine line to 15-40 KN to the tension required by the plate thickness process of the specification;
8) adjusting the running speed of the train, and automatically running until the material coil 2 is completely wound to a winding reel;
9) and after the material roll is welded, the strapping materials are bundled and tightened by a packer.
In the process 1), the angle between the double-edged shears and the strip in the length direction is controlled to be 12-30 degrees, the control is mainly used for finely shearing the head and the tail of the plate and strip, and good shearing quality is a precondition for obtaining a high-quality welding seam. The lower shear blade of the double-blade shear used in the invention is of a fixed structure, the upper shear blade is guided by adopting a double-guide-post structure and is synchronized in a hinge swing rod mechanical mode, the distance between blade openings of the double-blade shear is 100mm, the shear blade can be used on four sides, and the service life of the blade is long.
In the piano type pressing device in the process 2), each pressing key is 50mm wide and 5mm apart, and is pressed through hydraulic pressure.
The welding parameters of the rotary pressure welding in the process 2) are as follows: the rotating speed of a welding head is 500-700 r/min, the initial position (X, Y, Z) of a welding workpiece, the X-axis welding speed is 250-400 mm/min, and the X-axis automatic stroke is 425 mm.
The rotary pressure welding is a solid phase welding method, the method has very little pollution to the environment before welding and in the welding process, the strict surface cleaning preparation requirement is not needed for the workpiece before welding, the oxidation film on the surface of the weldment is removed by friction and rotation in the welding process, and no smoke and splash are generated in the whole welding process, and the noise is low; meanwhile, the rotary pressure welding only depends on the rotation and the movement of the welding head, the welding of the whole welding line is gradually realized, and other welding consumption materials such as welding rods, welding wires, welding flux, protective gas and the like are not needed in the welding process, so that energy is saved compared with the fusion welding and even the conventional friction welding, and the rotary pressure welding head is only consumed.
According to the invention, the beryllium copper alloy plate strip is welded by adopting a rotary pressure welding process, so that the roll type butt welding of the thick-band plate strip is realized, the welding bonding strength of the thick-band plate strip is more than 90% of the matrix strength, the roll weight after butt welding can reach 3-4 tons per roll, and the production of the beryllium copper ultra-large roll is realized. By utilizing the welding technology, the head and tail geometric waste amount of the plate and strip can be effectively reduced (saved by 1-3%), the rolling yield of the product is improved (stably improved by 1-3%), and the energy consumption of the strip in the processes of roll annealing, rolling, reeling and unloading in the production process is effectively reduced.
Drawings
FIG. 1 is a beryllium copper roll welding flow diagram;
FIG. 2 is a schematic view of the sheared strip with double edged shears;
FIG. 3 is a schematic view of the butt joint of the strips;
FIG. 4 is a schematic view of the strip with an arc striking block;
fig. 5 is a schematic diagram of a strip material with crescent-shaped shears for removing arc blocks.
Detailed Description
Example 1: the beryllium-copper alloy is rolled into two coils with the thickness of 1.9mm and the width of 430mm, and the strip is welded in a rolling way, and the specific welding process is as follows:
1. welding material preparation, material book 1 and material book 2 handling to the storage station are rolled up with the overhead traveling crane. And (3) conveying the material coil 1 and the material coil 2 to a hydraulic expansion type uncoiler by using a feeding trolley.
2. And (3) sending the stub bar of the material coil 1 to a pinch roll by using a starting guide plate matched with a feeding carrier roller, and pressing down the material coil to automatically penetrate a belt.
3. The stub bar of the material roll 1 passes through a double-edged shear, a welding platform, a crescent shear and a tension roll to a collapsible coiler. The stub bar is clamped on the jaw of the coiling machine and the coiling machine is expanded. Setting the tension (20 KN) of the train, setting the running speed of the train to be 10-50 m/min, and starting running. The tail of the material roll 1 stays at the inlet end of the double-edged shear.
4. And (3) unwinding and centering the material coil 2 according to the steps 2 and 3, and feeding the material coil 2 to the outlet end of the double-blade shear.
5. After the two coils of strip materials are centered, a piano key type pressing device is adopted to respectively press the tail of the material coil 1 and the head of the material coil 2.
6. The double-edged scissors cut and a 15-degree cut is formed in the length direction of the strip.
7. The material roll 2 is fed forwards for 100mm to coincide with the cut of the material roll 1, and the material roll 2 is compressed again.
8. The whole machine frame moves to a rotary pressure welding station, and arc striking blocks are arranged at two ends of the notch. Setting a rotary pressure welding process: the rotating speed of a welding head is 500-700 r/min, the initial position (X, Y, Z) of a welding workpiece, the X-axis welding speed is 250-400 mm/min, and the X-axis automatic stroke is 425 mm.
9. After welding, the material roll moves backwards to the crescent edge scissors, and unwelded parts at the two ends of the welding start and end are cut off.
10. Train tension (20 KN) is set. Setting the running speed of the train to be 10-50 m/min, and automatically running until the material roll 2 is completely wound to the winding machine.
11. And after the material roll is welded, the strapping materials are bundled and tightened by a packer. And a winding shaft of the winding machine contracts, and the discharging trolley jacks up the material roll to be conveyed to a discharging station. And the crown block hoists the welded material roll and then transfers the material roll to the next procedure.
Example 2: the beryllium-copper alloy is rolled up in two rolls with the thickness of 2.5mm and the width of 430mm, and the strip is welded in a rolling way, and the specific welding process is as follows:
1. welding material preparation, and hoisting the material roll to a material storage station by using a crown block. And (4) conveying the material to a hydraulic expansion type uncoiler by using a feeding trolley.
2. And (3) sending the stub bar of the material coil 1 to a pinch roll by using a starting guide plate matched with a feeding carrier roller, and pressing down the material coil to automatically penetrate a belt.
3. The stub bar of the material roll 1 is clamped on a jaw of the coiling machine through a double-edge shear, a welding platform, a crescent shear and a tension roller, the tension roller is set to expand the coiling machine, the tension (25 KN) of the machine train is set, the running speed of the machine train is set to be 10 ~ 50m/min, the machine train starts to run, and the tail of the material roll 1 stays at the inlet end of the double-edge shear.
4. And (3) unwinding and centering the material roll 2 according to the steps 2 and 3, and feeding the material roll 2 to the outlet end of the double-edged shear.
5. After the two coils of strip materials are centered, a piano key type pressing device is adopted to respectively press the tail of the material coil 1 and the head of the material coil 2.
6. The double-edged scissors cut and a 15-degree cut is formed in the length direction of the strip.
7. The material roll 2 is fed forwards for 100mm to coincide with the cut of the material roll 1, and the material roll 2 is compressed again.
8. The welding rack moves integrally to a rotary pressure welding station, and arc striking blocks are arranged at two ends of the notch. Setting a rotary pressure welding process: the rotating speed of a welding head is 550-750 r/min, the initial position (X, Y, Z) of a welding workpiece, the X-axis welding speed is 250-400 mm/min, and the X-axis automatic stroke is 425 mm.
9. After welding, the material roll moves backwards to the crescent edge scissors, and unwelded parts at the two ends of the welding start and end are cut off.
10. Train tension (25 KN) is set. Setting the running speed of the train to be 10-50 m/min, and automatically running until the material roll 2 is completely wound to the winding machine.
11. And after the material roll is welded, the strapping materials are bundled and tightened by a packer. And a winding shaft of the winding machine contracts, and the discharging trolley jacks up the material roll to be conveyed to a discharging station. And the crown block hoists the welded material roll and then transfers the material roll to the next procedure.
The strength comparison after welding is detailed in table 1.
Table 1: strip matrix to weld strength comparison
| Specification mm | Status of state | HV/1.0Kg | σb(MPa) | σ0.2(MPa) | δ% |
| 2.5 | Base body | 133.3 | 490.2 | 229 | 37.9 |
| 2.5 | Welding of | 168.7 | 447.4 | 244.1 | 21.2 |
The reliability of the welding strength of the welding process is reflected by comparing the strength of the base body and the strength of the welding seam, the strength of the welding seam after welding is 50% ~ 60% of the strength of the base body in the traditional welding process (argon arc welding), the strength of the welding seam after welding can reach 85% ~ 95% of the strength of the base body, and the data and the actual production prove the superiority of the process.
Claims (6)
1. A beryllium-copper alloy plate strip roll butt welding method is characterized in that: and welding the high-beryllium or low-beryllium alloy plates by adopting a rotary pressure welding process.
2. The roll butt welding method for beryllium copper alloy plates and strips according to claim 1, wherein the thickness of the high-beryllium or low-beryllium alloy plate is 1.5mm or more and 4.0mm or less.
3. The beryllium copper alloy plate strip roll butt welding method according to claim 1, wherein the specific process for welding the high beryllium or low beryllium alloy plate by adopting a rotary pressure welding process comprises the following steps:
1) the material roll 1 is uncoiled and centered to a coiling shaft, and the material tail stays at the inlet end of the double-edged shear; a material coil 2 is uncoiled, centered and fed to the outlet end of the double-edged shear;
2) after centering of the material roll 1 and the material roll 2 is determined, a piano key type pressing device is adopted for pressing;
3) cutting the material coil 1 and the material coil 2 by using a double-edged shear, and installing arc striking blocks at two ends of a cutting seam;
4) the material roll 2 is sent to be overlapped with the cut of the material roll 1, and the material roll 2 is compressed;
5) the welding rack integrally moves to a rotary pressure welding station, and the rotary pressure welding is started for welding;
6) after welding, moving a material coil welding seam to a crescent edge shear to cut off two end parts at the beginning and the end of welding;
7) adjusting the tension of the machine line to 15-40 KN to the tension required by the plate thickness process of the specification;
8) adjusting the running speed of the train, and automatically running until the material coil 2 is completely wound to a winding reel;
9) and after the material roll is welded, the strapping materials are bundled and tightened by a packer.
4. The roll butt welding method for beryllium copper alloy plates and strips according to claim 3, wherein in the process 1), the angle between the double-edged shears and the length direction of the strips is controlled to be 12-30 degrees.
5. The roll butt welding method for beryllium copper alloy sheet strips as set forth in claim 3, wherein in the process 2), the key-type pressing means is hydraulically pressed, each of the pressing keys having a width of 50mm and a pitch of 5 mm.
6. The roll butt welding method for beryllium copper alloy sheet strips according to claim 3, wherein welding parameters of the rotary pressure welding in the process 2) are as follows: the rotating speed of a welding head is 500-700 r/min, the initial position (X, Y, Z) of a welding workpiece, the X-axis welding speed is 250-400 mm/min, and the X-axis automatic stroke is 425 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911025661.9A CN110653478A (en) | 2019-10-25 | 2019-10-25 | Beryllium-copper alloy plate strip roll butt welding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911025661.9A CN110653478A (en) | 2019-10-25 | 2019-10-25 | Beryllium-copper alloy plate strip roll butt welding method |
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| CN110653478A true CN110653478A (en) | 2020-01-07 |
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2019
- 2019-10-25 CN CN201911025661.9A patent/CN110653478A/en active Pending
Patent Citations (7)
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Application publication date: 20200107 |