CN104588806A - Carbide blade laser brazing method - Google Patents
Carbide blade laser brazing method Download PDFInfo
- Publication number
- CN104588806A CN104588806A CN201410700996.7A CN201410700996A CN104588806A CN 104588806 A CN104588806 A CN 104588806A CN 201410700996 A CN201410700996 A CN 201410700996A CN 104588806 A CN104588806 A CN 104588806A
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- China
- Prior art keywords
- laser
- carbide
- brazing
- carbide alloy
- solid
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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
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/20—Tools
-
- 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
- B23K35/302—Cu as the principal constituent
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
A carbide blade laser brazing method comprises the following steps of (1) material selecting; (2) tight ejecting and stable pressing; (3) brazing. According to the carbide blade laser brazing method, by means of laser brazing, focusing light spots are small, high-precision flexible positioning can be achieved, and performance is stable; centralized flexible control can be achieved through a robot, the adaptability to workpieces is high, the brazing time can be effectively saved in mass production, and the production cost can be reduced; the effective connection between dissimilar materials is achieved, the brazing quality is high, brazing seams are smooth and attractive, the thermal influence area is small, and the probability of cracking of cemented carbide can be effectively lowered. Copper brazing wires are fully melted, the brazing seams are soaked and are smooth and flat, and the macro defects such as obvious pores and cracks are avoided.
Description
Technical field
The present invention relates to a kind of laser braze welding method of carbide chip, particularly relate to a kind of in carbide chip manufactures, export the laser braze welding method of solid-state laser based on coupling fiber.
Background technology
Carbide alloy is with using high rigidity, dystectic metal carbides (WC, TiC etc.) as matrix, using metal Co etc. as adhesive, and a kind of alloy made by the method for powder metallurgy.Due to Cemented Carbide Hardness high (69 ~ 81HRC), thermohardening is good (can reach 900 ~ 1000 DEG C, keep 60HRC) and wearability good and be widely used in cutter, the hard material of hard alloy cutter machinable about 50HRC, and higher than high-speed steel cutting speed 4 ~ 7 times, cutter life is high 5 ~ 80 times.Hard alloy cutter accounts for 80% of various cutter sales volume total amount, and in high speed cutting tool, application quantity is maximum.Current developed country hard alloy cutter in Tool Industry accounting up to 70%, occupy leading position, but China's hard alloy cutter proportion is less than 25%, not only greatly differ from each other with international market cutter product structure, domestic manufacturing industry can not be met to the growing demand of hard alloy cutter.In order to meet domestic demand, and making full use of carbide alloy resource, being badly in need of now producing new material, new method, new equipment on the basis of prior art.Carbide alloy fragility is large, not easily carries out machining, is difficult to make complex-shaped solid tool, and makes solid tool with carbide alloy, be unfavorable for the Appropriate application of resource, cost of idleness and resource consumption.Thus often make difform blade, adopt the methods such as welding, bonding, mechanical grip to be arranged on blade base or mold and use.
Adopt the method for welding to connect carbide alloy and blade base, accommodate compared to adhesion and machinery, strength of joint can be significantly improved and save metal material.Carbide alloy contains carbide and the alloying element of high level, when adopting the method for melting welding directly to weld carbide alloy and blade base, easily occurs: (1) weld crack.The thermal coefficient of expansion of carbide alloy is less, is generally 1/2 ~ 1/3 of steel, and carbide alloy and steel postwelding, due to can not synchronous, can form very high residual stress in weld metal zone, and mostly be tension on carbide alloy, cause carbide alloy to ftracture thus.(2) weld seam is brittle.Mainly form M in weld metal zone
6c type double carbide η phase, wherein M comprises the elements such as W, Fe, Co, Ni, and main cause is carbide alloy when welding with steel, and the carbon in carbide alloy, to the diffusion of steel side, makes phosphorus content in carbide alloy reduce and form η phase.
Therefore the method for soldering is generally adopted, connect carbide alloy and blade base, the method for welding of normal employing comprises oxyacetylene torch soldering, high-frequency induction brazing, resistance brazing and leaching copper brazing etc., but when adopting these method for welding, easily there are some problems, such as: when adopting oxyacetylene torch soldering, more difficult control flame temperature, often there is the defects such as weld seam slag inclusion, pore in postwelding cutter, even produces burning or not weld penetration; When adopting leaching copper brazing, to steel and the heating of carbide alloy entirety, easily crack in carbide alloy, solder is easily oxidized, produces impurity and is mixed in weld seam, weld seam tensile strength is declined.
Summary of the invention
For above problem, the object of the present invention is to provide a kind of carbide chip laser braze welding method, be using copper base wires as solder, put between carbide alloy and blade base by preset for copper base wires, adopt coupling fiber output solid-state laser to carry out the method for laser braze welding.
The technical scheme of a kind of carbide chip laser braze welding of the present invention method is achieved in the following ways:
1), select materials: select materials: solder is copper base wires, carbide chip is the carbide alloy of tungstenic amount 99%, T8MnA is cutter base material;
2), copper base wires adopts preset mode to be put between carbide alloy and blade base, holds out against pressure steady by welding tool setup;
3), soldering: adopt coupling fiber to export solid-state laser aligning copper base wires and carry out laser braze welding, laser facula is operated in above copper base wires, copperwelding rod melted by heat, infiltrates carbide alloy and blade base respectively, forms the effective connection between carbide alloy and blade base.
The laser power P=2400W of described step 3), speed of welding v=1.5m/min, focal distance f=150mm.，
It is lamp pumping Nd:YAG laser instrument, laser pump (ing) Nd:YAG laser instrument, optical fiber laser or all solid state laser that described coupling fiber exports solid-state laser.
The laser head of described coupling fiber output solid-state laser has the inclination angle of 10 ° ± 1o relative to vertical plane.
The present invention, laser braze welding focal beam spot is little, can realize high accuracy flexibility location, and stable performance; Unified Flexible Control can be realized by robot, strong to workpiece applicability, effectively can save weld interval during volume production, reduce production cost; Achieve the effective connection between foreign material, welding quality is high, smooth welded seam, attractive in appearance, and heat affected area is little, effectively can reduce carbide alloy cracking probability.Copperwelding rod fully melts, and infiltrates weld seam, and weld seam is round and smooth smooth-going, without gross imperfections such as obvious pore, crackles.
Accompanying drawing explanation
Fig. 1 is laser braze welding system architecture diagram.
Fig. 2 is embodiment laser braze welding process schematic.
Fig. 3 is robot welding line track teaching flow chart.
Fig. 4 is laser braze welding flow chart.
Detailed description of the invention
A kind of carbide chip laser braze welding method, solid-state laser is exported based on coupling fiber, adopt copper base wires as solder, during soldering, copperwelding rod melted by heat infiltrates carbide alloy and blade base respectively, realizes the effective connection between carbide alloy and blade base.Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail:
As shown in Figure 1; laser braze welding system exports solid-state laser (mating optical and laser head) by coupling fiber; Automated condtrol integrated electric cabinet; cooling system; protection gas, robot, the compositions such as frock clamp; laser instrument is transported to laser head by optical fiber light source, and laser head location and installation on the robotic arm.The switching value such as laser beam and protective gas is integrated in the control system of robot, laser instrument is standby complete after, set laser power by man-machine interface, control the welding of laser braze welding and walking by teach box unitary.
A kind of carbide chip laser braze welding of the present invention method takes a kind of Simple welding frock, during clamping workpiece location, the welding precision requirement ensureing workpiece with hold-down mechanism is held out against by frock, install simple, debugging is convenient, groove is provided with, with the copperwelding rod of fusing and the adhesion of tooling platform of keeping from heat below copperwelding rod.
The concrete implementation step of a kind of carbide chip laser braze welding method of the present invention is: build laser braze welding system, utilize welding tooling to clamping workpiece location (as shown in Figure 2), robot teach box butt welded seam track is used to carry out teaching, after teaching success, the switching values such as setting optical gate, protection gas, write save routine, (as shown in Figure 3); During laser braze welding, after system standby completes, by laser instrument man-machine interface (as shown in Figure 1) setting laser power, then call welding procedure, guarantee optical gate, protection is after gas opens, carry out laser braze welding, as shown in Figure 4.
embodiment 1
Jiangsu Wisoft Softuare Co., Ltd four-quadrant laser Science and Technology Ltd. ZKSX3004 coupling fiber output all-solid-state laser (mating optical and laser head) and Japan's FA NUC robot is adopted to build laser braze welding system.ZKSX3004 coupling fiber output all-solid-state laser is semiconductor diode array profile pump, and rated power is 3kW, and its coupling fiber achieving 400 μm at home first exports continuously, and coupling efficiency is up to 96.7%; Laser instrument adopts PLC control system, and the closed-loop control of high-precision laser power and automatic compensation function, make laser output power stability reach within 2%; Man-machine interface is friendly, and integrated interface is succinct, can simple realization and robot, lathe the system integration.
Choose tungstenic amount be 99% carbide alloy and T8MnA carry out laser braze welding, adopt H80 copperwelding rod to be solder, protective gas is Ar gas, and throughput is 6L/min.Selected welding parameter is: laser power P=2400W, speed of welding v=1.5m/min, focal distance f=150mm.First treat weldering surface of the work and carry out cleaning rust cleaning, then hold out against pressure by frock clamp steady.It is lamp pumping Nd:YAG laser instrument, laser pump (ing) Nd:YAG laser instrument, optical fiber laser or all solid state laser that described coupling fiber exports solid-state laser.The laser head of coupling fiber output solid-state laser has the inclination angle of 10 ° ± 1o relative to vertical plane.
During soldering, laser facula is operated in above copperwelding rod, copperwelding rod melted by heat, infiltrates carbide alloy and T8MnA respectively, thus forms the effective connection between carbide alloy and T8MnA.Postwelding result shows, copperwelding rod is fully molten, and infiltrates weld seam, and weld seam is round and smooth smooth-going, without gross imperfections such as obvious pore, crackles.
Claims (4)
1. a carbide chip laser braze welding method, comprises the following steps: 1), select materials; 2) pressure, is held out against steady; 3), soldering; It is characterized in that:
1), select materials: solder is copper base wires, carbide chip is the carbide alloy of tungstenic amount 99%, T8MnA is cutter base material;
2), pressure is held out against steady: copper base wires adopts preset mode to be put between carbide alloy and blade base, holds out against pressure steady by welding tool setup;
3), soldering: adopt coupling fiber to export solid-state laser aligning copper base wires and carry out laser braze welding, laser facula is operated in above copper base wires, copperwelding rod melted by heat, infiltrates carbide alloy and blade base respectively, forms the effective connection between carbide alloy and blade base.
2. a kind of carbide chip laser braze welding method according to claim 1, is characterized in that: the laser power P=2400W in described step 3), speed of welding v=1.5m/min, focal distance f=150mm.
3. a kind of carbide chip laser braze welding method according to claim 1, is characterized in that: it is lamp pumping Nd:YAG laser instrument, laser pump (ing) Nd:YAG laser instrument, optical fiber laser or all solid state laser that the coupling fiber in described step 3) exports solid-state laser.
4. a kind of carbide chip laser braze welding method according to claim 1, is characterized in that: the laser head of the coupling fiber output all-solid-state laser in described step 3) has the inclination angle of 10 ° ± 1o relative to vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700996.7A CN104588806A (en) | 2014-11-28 | 2014-11-28 | Carbide blade laser brazing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700996.7A CN104588806A (en) | 2014-11-28 | 2014-11-28 | Carbide blade laser brazing method |
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| CN104588806A true CN104588806A (en) | 2015-05-06 |
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| CN201410700996.7A Pending CN104588806A (en) | 2014-11-28 | 2014-11-28 | Carbide blade laser brazing method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903750A (en) * | 2015-12-22 | 2017-06-30 | 张建东 | A kind of brazing hard alloy hobbing cutter die roller |
| CN107498140A (en) * | 2017-08-28 | 2017-12-22 | 大族激光科技产业集团股份有限公司 | Laser coaxial brazing device and method for laser welding |
| CN108620736A (en) * | 2017-03-22 | 2018-10-09 | 日本电产株式会社 | Solder connected structure, solder bonding method and solder engagement accessory |
| CN112872524A (en) * | 2021-02-01 | 2021-06-01 | 百富新(北京)钻切材料有限公司 | Diamond saw blade welding method |
| CN114367714A (en) * | 2022-02-23 | 2022-04-19 | 东莞市俊知自动机械有限公司 | Laser brazing method for saw blade tool bit |
| CN115213518A (en) * | 2022-08-18 | 2022-10-21 | 飒羽辰工程科技(上海)有限公司 | Automatic controllable phase change fastening method for accessories in wind power tower |
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| CN101130213A (en) * | 2007-09-18 | 2008-02-27 | 南京航空航天大学 | Method for manufacturing nickel base brazing filler metal laser braze welding diamond abrasive grain |
| CN101890571A (en) * | 2010-07-26 | 2010-11-24 | 李艽 | Welding method for prolonging hard alloy tool with double metal structure |
| CN103231136A (en) * | 2013-03-28 | 2013-08-07 | 北京工业大学 | Laser brazing method for TiNi (titanium-nickel) shape memory alloy and dissimilar light metal |
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2014
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Patent Citations (4)
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| CN101130213A (en) * | 2007-09-18 | 2008-02-27 | 南京航空航天大学 | Method for manufacturing nickel base brazing filler metal laser braze welding diamond abrasive grain |
| CN101890571A (en) * | 2010-07-26 | 2010-11-24 | 李艽 | Welding method for prolonging hard alloy tool with double metal structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903750A (en) * | 2015-12-22 | 2017-06-30 | 张建东 | A kind of brazing hard alloy hobbing cutter die roller |
| CN108620736A (en) * | 2017-03-22 | 2018-10-09 | 日本电产株式会社 | Solder connected structure, solder bonding method and solder engagement accessory |
| CN107498140A (en) * | 2017-08-28 | 2017-12-22 | 大族激光科技产业集团股份有限公司 | Laser coaxial brazing device and method for laser welding |
| CN107498140B (en) * | 2017-08-28 | 2019-12-17 | 大族激光科技产业集团股份有限公司 | Laser coaxial brazing device and laser welding method |
| CN112872524A (en) * | 2021-02-01 | 2021-06-01 | 百富新(北京)钻切材料有限公司 | Diamond saw blade welding method |
| CN114367714A (en) * | 2022-02-23 | 2022-04-19 | 东莞市俊知自动机械有限公司 | Laser brazing method for saw blade tool bit |
| CN114367714B (en) * | 2022-02-23 | 2024-03-12 | 东莞市俊知自动机械有限公司 | Laser brazing method for saw bit tool bit |
| CN115213518A (en) * | 2022-08-18 | 2022-10-21 | 飒羽辰工程科技(上海)有限公司 | Automatic controllable phase change fastening method for accessories in wind power tower |
| CN115213518B (en) * | 2022-08-18 | 2024-06-07 | 飒羽辰工程科技(上海)有限公司 | Automatic controllable phase change fastening method for accessories in wind power tower |
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Application publication date: 20150506 |