CN103801851B - Spot-wedling electrode electric spark on surface deposition Al 2o 3-TiB 2deposition rod of coating and preparation method thereof - Google Patents

Spot-wedling electrode electric spark on surface deposition Al 2o 3-TiB 2deposition rod of coating and preparation method thereof Download PDF

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Publication number
CN103801851B
CN103801851B CN201310684856.0A CN201310684856A CN103801851B CN 103801851 B CN103801851 B CN 103801851B CN 201310684856 A CN201310684856 A CN 201310684856A CN 103801851 B CN103801851 B CN 103801851B
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tib
coating
deposition
spot
electrode
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CN103801851A (en
Inventor
董仕节
罗平
谢志雄
王辉虎
常鹰
郑重
杨威
杨李安卓
李海坤
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Hubei University of Technology
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Hubei University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/14—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on borides

Abstract

Spot-wedling electrode electric spark on surface deposition Al of the present invention 2o 3-TiB 2deposition rod of coating and preparation method thereof, the TiB of deposition rod containing mass percent 48 ~ 82% 2, the Al of 10 ~ 30% 2o 3, the Ni of 5 ~ 25%, 2 ~ 6%Mo, 1 ~ 3%W.Al of the present invention 2o 3-TiB 2deposition rod, after spot-wedling electrode surface adopts electric spark deposition techniques, can obtain the Al of 10 ~ 25 μ on spot-wedling electrode surface 2o 3-TiB 2coating, this coating performance is stablized, with conventional Ti B 2the life-span of deposition rod has compared a small amount of raising, but operation is simple, and coating cost has larger reduction.

Description

Spot-wedling electrode electric spark on surface deposition Al 2o 3-TiB 2deposition rod of coating and preparation method thereof
Technical field
Deposition rod of a kind of spot-wedling electrode electric spark on surface deposition coating and preparation method thereof belongs to machinery industry, microelectronic industry assembly and connection technical field.
Background technology
Along with the development of automobile industry, general steel plate can not meet the requirement that automobile corrosive nature improves constantly.Various clad steel sheet, particularly galvanized steel plain sheet are applied and are more and more extensively sent out on automobile.During due to spot welding zinc coated steel, the zinc of low melting point decreases the contact resistance between electrode and steel plate, compared with spot welding general steel plate (non-clad steel sheet), need increase of weld current or extend guarantee welding quality weld interval, this makes electrode head will bear higher sweating heat, under sweating heat and power synergy, easily and the zinc of the low melting point of surface of steel plate react, form the alloy of low melting point, accelerate electrode failure.So studying high performance spot-wedling electrode material and carrying out surface treatment to improve the spot-wedling electrode life-span to existing spot-wedling electrode is the direction that Welder author makes great efforts, but most economical most effective method still carries out surface treatment to electrode.If can electrode head deposition one deck high-melting-point, high conductivity, high strength and with the ceramic material at the bottom of Zinc-binding-force, the zinc coat hindered or slow down electrode and surface of steel plate when spot welding reacts, and just can improve electrode life and the anti-adhesive properties between raising electrode and weldment greatly.Therefore, in order to adapt to the requirement that spot welding improves constantly electrode, just need to study better spot-wedling electrode finish materials,
Electric spark deposition and physical vapour deposition (PVD) is had to the main painting method of spot-wedling electrode surface-treated.Gobez deposited cobalt, tantalum, nickel, TiN and molybdenum respectively on the CrZrCu electrode of spot welding galvanized steel, result show first three plant coating make electrode life reduce and latter two coating makes the anti-wear performance of electrode slightly increase.The Studdon TiN coated electrode coated electrode spot welding Zn-Al Coated Steels of Wollongong university, welding current is lower by 10 ~ 20% than the electric current not being coated with CrN electrode, electrode life is longer than the life-span not being coated with CrN electrode, the spot-wedling electrode not but being coated with CrN electrode is relatively stable for surface lifetime, in about ± 7% change, and the spot-wedling electrode being coated with CrN electrode changes about ± 40% surface lifetime.The larger reason that fluctuates is that CrN coating exists many defects.The patent that Canada HuysIndustriesLimited has just reports the technique of spot-wedling electrode electric spark on surface built-up welding TiC layer, this type of electrode is when micro welding nickel-clad steel plate and nickel plate, reach the twice that be CuCrZr electrode its electrode life at 1200, the main cause improving electrode life is that surperficial TiC coating hinders the local welding between electrode and nickel-plated sheet and decreases the plastic deformation of electrode, in addition, the TiC layer of electrode surface can also improve the anti-adhesive properties of electrode; This type of ball-type electrode reaches more than 1000 points the electrode life when the zinc-plated automotive sheet of spot welding, is 2.5 times of CuCrZr electrode, provides the main cause of electrode life to be that TiC coating delays and prevents the diffusion of Zn, has delayed the alloying with electrode matrix copper.
TiB2(titanium diboride) in conductance, fusing point, hardness etc., be all better than TiC, Chinese invention patent " deposition rod of 200410060704.4 spot-wedling electrode electric spark on surface deposition coatings and preparation method thereof " provides a kind of for electric spark acquisition TiB 2the deposition rod of coated electrode, reaches more than 1500 points electrode life.But TiB 2wetability between (titanium diboride) and matrix is poor, is difficult to directly obtain continuous, fine and close TiB by electric spark 2coating, at electrode surface precoating transition zone, must could obtain the TiB of superior performance 2coating, by this way at electrode surface coating TiB 2technique is comparatively complicated, and cost is also higher, is unfavorable for promoting the use of on a large scale.
Summary of the invention
The present invention is directed to problems of the prior art, provide a kind of cost low, good conductivity, thermal conductivity is good, the coating material that fusing point is high--- spot-wedling electrode electric spark on surface deposition Al 2 o 3 -TiB 2 deposition rod of coating and preparation method thereof.
Spot-wedling electrode electric spark on surface deposition Al provided by the invention 2o 3-TiB 2the deposition rod of coating, its feature is being: the TiB of described deposition rod containing mass percent 48 ~ 82% 2, the Al of 10 ~ 30% 2o 3, the Ni of 5 ~ 25%, 2 ~ 6%Mo, 1 ~ 3%W, use described main containing Al 2o 3-TiB 2deposition rod can directly adopt electric spark deposition techniques to obtain Al on spot-wedling electrode surface 2o 3-TiB 2coating.
Spot-wedling electrode electric spark on surface deposition Al of the present invention 2o 3-TiB 2the Al of coating 2o 3-TiB 2the preparation method of deposition rod, is characterized in that: be the TiB of 48 ~ 82% by mass percent 2, the Al of 10 ~ 30% 2o 3, the Ni of 5 ~ 25%, 2 ~ 6%Mo, 1 ~ 3%W, the abundant ball milling of Homogeneous phase mixing; Then the viscose glue adding 2 ~ 10% of mixed powder gross mass in above-mentioned mixed-powder good for ball milling is pressed into required bar, bar is sinter in the Ar protective atmosphere of 100-140Kgf to become a useful person at 1500 DEG C ~ 1900 DEG C at pressure after 100 DEG C ~ 300 DEG C insulations are fully come unstuck.Preferably, after institute's Homogeneous phase mixing of telling, fully Ball-milling Time scope is 5 ~ 72 hours; Sinter at temperature range 1650 DEG C ~ 1800 DEG C and become a useful person.
Al of the present invention 2o 3-TiB 2deposition rod, after spot-wedling electrode surface directly adopts electric spark deposition techniques, can obtain Al on spot-wedling electrode surface 2o 3-TiB 2the Al of 10 ~ 25 μ 2o 3-TiB 2coating, this coating performance is stablized, with conventional Ti B 2the life-span of deposition rod has compared a small amount of raising, but operation is simple, and coating cost has larger reduction.
Experimental data below by example graphically illustrates Al of the present invention 2o 3-TiB 2the Al that deposition rod adopts electric spark deposition techniques to obtain on spot-wedling electrode surface 2o 3-TiB 2the performance of coating, and with traditional TiB 2the TiB that deposition rod adopts electric spark deposition techniques to obtain on spot-wedling electrode surface 2the performance of coating compares.
Table 1 is 4 kinds of heterogeneity Al of the present invention 2o 3-TiB 2the TiB of deposition rod and prior art 2the contrast table of deposition rod deposition techniques and cost.
Table 1
Note: Al in table 2o 3-TiB 2/ TiB 2al under expression identical weight 2o 3-TiB 2deposition rod cost accounts for TiB 2the percentage of deposition rod cost
Table 2 is example 1 ~ 4 of the present invention and TiB 2the Al that deposition rod adopts electric spark deposition techniques (voltage 24V, capacitance 30000 μ F, matrix rotating speed 1200r/min, vibration frequency 50Hz and deposition time 120s) to obtain on spot-wedling electrode surface 2o 3-TiB 2coating and TiB 2the life-span of coating when spot welding thickness is the galvanized steel plain sheet of 0.8mm compares.As can be seen from the table, with the Al that example 1 ~ 4 of the present invention obtains in the direct electric spark deposition of electrode surface 2o 3-TiB 2the life-span of coating and conventional Ti B 2deposition rod improved in the life-span of the TiB2 coating that electrode surface deposition obtains, and associative list 1 can find Al 2o 3-TiB 2coating is relative to TiB 2coating life improves, but coating cost but has larger reduction, and the present invention is applicable to the resistance spot welding of machinery industry spot welding zinc coated steel.
Table 2
Accompanying drawing explanation
Fig. 1 is Al of the present invention 2o 3-TiB 2the Al that deposition rod adopts electric spark deposition to obtain 2o 3-TiB 2coated electrode and ordinary electrode contrast picture.
Fig. 2 is Al of the present invention 2o 3-TiB 2the Al that deposition rod adopts electric spark deposition to obtain 2o 3-TiB 2coating X diffraction picture, can find out that coating is primarily of Al 2o 3and TiB 2two phase compositions
Fig. 3 is Al of the present invention 2o 3-TiB 2the Al that deposition rod adopts electric spark deposition to obtain 2o 3-TiB 2coated electrode Metallograph, highlight regions is Al 2o 3-TiB 2coating.
Detailed description of the invention
Example 1: by 480 grams of TiB 2powder, 300 grams of Al 2o 3powder, 150 grams of Ni powder, 60 grams of Mo powder, 10 grams of W powder; The abundant ball milling of Homogeneous phase mixing 60 hours, the viscose glue above-mentioned powder good for ball milling being added 60g is pressed into the bar of needs, is to become a useful person stand-by at 1700 DEG C of sintering in the Ar protective atmosphere of 100Kgf after bar 220 DEG C comes unstuck at pressure.
Example 2: by 590gTiB 2powder, 250 grams of Al 2o 3powder, 100 grams of Ni powder, 50 grams of Mo powder, 10 grams of W powder; The abundant ball milling of Homogeneous phase mixing 60 hours, the viscose glue above-mentioned powder good for ball milling being added 60g is pressed into the bar of needs, is become a useful person stand-by at 1720 DEG C of sintering in the Ar protective atmosphere of 100Kgf at pressure after bar comes unstuck at 220 DEG C.
Example 3: by 670 grams of TiB 2powder, 200 grams of Al 2o 3powder, 80 grams of Ni powder, 40 grams of Mo powder, 10 grams of W powder; The abundant ball milling of Homogeneous phase mixing 60 hours, the viscose glue above-mentioned powder good for ball milling being added 80g is pressed into the bar of needs, is become a useful person stand-by at 1750 DEG C of sintering in the Ar protective atmosphere of 100Kgf at pressure after bar comes unstuck at 300 DEG C.
Example 4: by 820 grams of TiB 2powder, 100 grams of Al 2o 3powder, 50 grams of Ni powder, 20 grams of Mo powder, 10 grams of W powder; The abundant ball milling of Homogeneous phase mixing 60 hours, the viscose glue above-mentioned powder good for ball milling being added 85g is pressed into the bar of needs, is become a useful person stand-by at 1750 DEG C of sintering in the Ar protective atmosphere of 100Kgf at pressure after bar comes unstuck at 350 DEG C.

Claims (3)

1. spot-wedling electrode electric spark on surface deposition Al 2o 3-TiB 2the deposition rod of coating, is characterized in that: the TiB of described deposition rod containing mass percent 48 ~ 82% 2, the Al of 10 ~ 30% 2o 3, the Ni of 5 ~ 25%, 2 ~ 6%Mo, 1 ~ 3%W.
2. spot-wedling electrode electric spark on surface deposition Al according to claim 1 2o 3-TiB 2the preparation method of the deposition rod of coating, it is characterized in that, manufacture method comprises the following steps: first by the Al of 10 ~ 30% 2o 3, the TiB of 48 ~ 82% 2, the Ni of 5 ~ 25%, 2 ~ 6%Mo, 1 ~ 3%W, the abundant ball milling of Homogeneous phase mixing; Then the viscose glue adding 2 ~ 10% of mixed powder gross mass in above-mentioned mixed-powder good for ball milling is pressed into required bar, bar is sinter in the Ar protective atmosphere of 100 ~ 140Kgf to become a useful person at 1500 DEG C ~ 1900 DEG C at pressure after 100 DEG C ~ 300 DEG C insulations are fully come unstuck.
3. the spot-wedling electrode electric spark on surface deposition Al according to claims 2 2o 3-TiB 2the preparation method of the deposition rod of coating, is characterized in that: after described Homogeneous phase mixing, abundant Ball-milling Time scope is 5 ~ 72 hours; Sinter at temperature range 1650 DEG C ~ 1800 DEG C and become a useful person.
CN201310684856.0A 2013-12-16 2013-12-16 Spot-wedling electrode electric spark on surface deposition Al 2o 3-TiB 2deposition rod of coating and preparation method thereof Expired - Fee Related CN103801851B (en)

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CN105171149B (en) * 2015-10-28 2017-11-03 哈尔滨工业大学 A kind of high energy micro arc NC postprocessing deposition process of titanium-fire-preventing coating
CN106271179B (en) * 2016-08-31 2018-06-29 湖北工业大学 A kind of ZrB2-CrB2Duplex heat treatment deposition stick and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323149A1 (en) * 1993-07-10 1995-01-12 Audi Ag Electrode for resistance welding
CN1572413A (en) * 2003-05-27 2005-02-02 Ykk株式会社 Electrode material and method for manufacture thereof
CN1586791A (en) * 2004-08-08 2005-03-02 湖北汽车工业学院 Coated stick of spot welding electrode surface electric spark coating layer and its preparing method
CN1775453A (en) * 2005-11-30 2006-05-24 陈铮 Copper alloy electrode for resistance weld and its manufacturing method
CN102181676A (en) * 2011-03-28 2011-09-14 河海大学常州校区 Preparation technology of AI203/Cu composite material

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Publication number Priority date Publication date Assignee Title
JPH01156442A (en) * 1987-12-11 1989-06-20 Kobe Steel Ltd Electrode for spot welding
JPH01266975A (en) * 1988-04-19 1989-10-24 Nippon Steel Corp Electrode for resistance welding

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323149A1 (en) * 1993-07-10 1995-01-12 Audi Ag Electrode for resistance welding
CN1572413A (en) * 2003-05-27 2005-02-02 Ykk株式会社 Electrode material and method for manufacture thereof
CN1586791A (en) * 2004-08-08 2005-03-02 湖北汽车工业学院 Coated stick of spot welding electrode surface electric spark coating layer and its preparing method
CN1775453A (en) * 2005-11-30 2006-05-24 陈铮 Copper alloy electrode for resistance weld and its manufacturing method
CN102181676A (en) * 2011-03-28 2011-09-14 河海大学常州校区 Preparation technology of AI203/Cu composite material

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