CN100349687C - Coated stick of spot welding electrode surface electric spark coating layer and its preparing method - Google Patents

Coated stick of spot welding electrode surface electric spark coating layer and its preparing method Download PDF

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Publication number
CN100349687C
CN100349687C CNB2004100607044A CN200410060704A CN100349687C CN 100349687 C CN100349687 C CN 100349687C CN B2004100607044 A CNB2004100607044 A CN B2004100607044A CN 200410060704 A CN200410060704 A CN 200410060704A CN 100349687 C CN100349687 C CN 100349687C
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China
Prior art keywords
deposited
powder
electric spark
spot
electrode
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Expired - Fee Related
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CNB2004100607044A
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Chinese (zh)
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CN1586791A (en
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董仕节
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Huys Industries Ltd
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Huys Industries Ltd
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Priority to CNB2004100607044A priority Critical patent/CN100349687C/en
Publication of CN1586791A publication Critical patent/CN1586791A/en
Priority to CA002510911A priority patent/CA2510911A1/en
Priority to US11/159,402 priority patent/US20060029512A1/en
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • 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
    • B23K35/40—Making wire or rods for soldering or welding
    • B23K35/402—Non-consumable electrodes; C-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
    • B23K35/327—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C comprising refractory compounds, e.g. carbides

Abstract

The present invention relates to a coated stick of spot welding electrode surface electric spark coating layers and a preparing method thereof. The coated stick comprises the components of 12 to 24 wt% of Ni, 4 to 10 wt% of Mo, 0.15 to 1.0 wt% of W, 0.15 to 1.0 wt% of Co and TiB2 as the rest. The TiB2 coated stick of the present invention can obtain TiB2 coating layers with the thickness of 10 to 25 micrometers at the surface of a spot welding electrode by a surface electric spark coated technology, and the properties of the coating layers are stable. The TiB2 coating layers obtained by the coated stick of the present invention after the coated stick of the present invention adopts the spot welding electrode surface electric spark coating technology can effectively prolong the service life of the spot welding electrode and improve the anti-adhesion properties, and the coating layers have strong practicability.

Description

Deposited rod that the deposited coating of spot-wedling electrode electric spark on surface is used and preparation method thereof
Technical field
Deposited rod that the deposited coating of a kind of spot-wedling electrode electric spark on surface is used and preparation method thereof belongs to mechanical industry, the microelectronic industry assembling connects the manufacturing technology field.
Background technology
Along with developing of automobile industry, general steel plate can not satisfy the requirement that the automobile corrosion resisting property improves constantly.Various clad steel sheets, particularly galvanized steel plain sheet are used more and more extensive on automobile.Because during spot welding zinc coated steel, low-melting zinc has reduced the contact resistance between electrode and the steel plate, compare with spot welding general steel plate (non-clad steel sheet), need to increase welding current or prolong weld interval and could guarantee welding quality, this makes electrode head will bear higher sweating heat, and under sweating heat and power synergy, low-melting zinc easy and surface of steel plate reacts, form low-melting alloy, accelerate electrode failure.To improve the spot-wedling electrode life-span be the direction that the welding research worker makes great efforts so study high performance spot-wedling electrode material and existing spot-wedling electrode is carried out surface treatment, but the most economical and effective method is still carried out surface treatment to electrode.If can be at the deposited one deck high-melting-point of electrode head, high conductivity, high strength and the ceramic material low with Zinc-binding-force, hinder or slow down that the zinc coat of electrode and surface of steel plate reacts when spot welding, just can improve the anti-adhesive properties between electrode life and raising electrode and the weldment greatly.Therefore, in order to adapt to the requirement that spot welding improves constantly spot-wedling electrode, just need the better spot-wedling electrode finish materials of research.
The main coating method of spot-wedling electrode surface-treated there are electric spark deposition and physical vapour deposition (PVD).Gobez has deposited cobalt, tantalum, nickel, TiN and molybdenum respectively on the CrZrCu of spot welding zinc coated steel electrode, the result shows that first three plants coating and make and reduce then that two kinds of coatings slightly increase the abrasion resistance properties of electrode electrode life.The Studdon of Wollongong university TiN coated electrode spot welding Zn-Al coated steel, the result makes the life-span of CuCr electrode increase by 70%.The multi sphere technology of one of human physical gas phase deposition technologies such as Ashcroft is in spot-wedling electrode surface deposition CrN coating, with this electrode spot welding Zn-Al coated steel, welding current is than the electric current that is not coated with the CrN electrode low 10～12%, electrode life is also long than the life-span that is not coated with the CrN electrode, the spot-wedling electrode that but is not coated with the CrN electrode is relatively stable surface lifetime, about ± 7%, change, and the spot-wedling electrode that is coated with the CrN electrode changes about ± 40% surface lifetime.The big reason of fluctuation is that the CrN coating exists many defectives.The patent that Canada Huys Industries Limited has has just been reported the technology 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, reaching its electrode life at 1200 is the twice of CuCrZr electrode, the main cause that improves electrode life is that the TiC coating on surface has hindered the local welding between electrode and the nickel-plated sheet and reduced the plastic deformation of electrode, in addition, the TiC layer of electrode surface can also improve the anti-adhesive properties of electrode; Point surplus this type of ball-type electrode reaches 1000 electrode life when spot welding plating Zn automotive sheet is 2.5 times of CuCrZr electrode, and the main cause that improves electrode life is the diffusion that the TiC coating delays and stoped Zn, has delayed the alloying with electrode matrix copper.
Summary of the invention
The present invention is directed to problems of the prior art, a kind of good conductivity is provided, thermal conductivity is good, the coating material that fusing point is high, the deposited rod that the deposited coating of spot-wedling electrode electric spark on surface involved in the present invention is used is characterized in that: it is 12～24% Ni that described deposited rod contains mass percent, 4～10% Mo, 0.15～1.0% W, 0.15～1.0% Co, all the other are TiB 2Use the described TiB that contains 2The TiB that deposited rod can make the spot-wedling electrode surface adopt the electric spark deposition techniques to obtain 2Coating.
The invention provides the deposited TiB of a kind of spot-wedling electrode electric spark on surface 2The TiB that coating is used 2The preparation method of deposited rod is characterized in that: the Ni powder with 12～24%, and 4～10% Mo powder, 0.15～1.0% W powder, 0.15～1.0% Co powder, all the other are TiB 2Powder (mass ratio) evenly mixes fully ball milling of back; The viscose glue that the above-mentioned mixed-powder that ball milling is good adds (2～10) % of gross weight is pressed into needed bar, and it is to become a useful person at 1500～1900 ℃ of following sintering in the 100kg protective atmosphere at pressure that bar fully comes unstuck back 100～300 ℃ of insulations.
Below by the test data of example with the formal specification of chart TiB of the present invention 2The TiB that deposited rod adopts the electric spark deposition techniques to obtain on the spot-wedling electrode surface 2The performance of coating, and compare with the performance of the TiC coating that adopts the electric spark deposition techniques to obtain at the deposited rod of traditional TiC on spot-wedling electrode surface.
Table 1 is 4 kinds of TiB 2The component list of deposited rod and the deposited rod of conventional Ti C, composition all is weight percentage in the table, and having provided a deposited diameter in the table 1 simultaneously is the used average time of spot welding spheric electrode of 8mm for the 16mm head radius.As can be seen from Table 1, the same deposited technology of spot-wedling electrode electric spark on surface that goes for of example 1～4 of the present invention with the deposited rod of TiC.
Table 1
Example TiB 2(％) Ni(％) Mo(％) W(％) Co(％) The deposited used time of electrode (s)
Comparative Examples TiC rod 65
Embodiment 1 73.6 18.5 6.1 0.9 0.9 57
Embodiment 2 75.6 18.4 4.2 1.0 0.8 59
Embodiment 3 74.8 15.6 8.5 0.6 0.5 61
Embodiment 4 75.7 16.2 7.1 0.7 0.3 56
Table 2 is TiB that example 1～4 of the present invention and the deposited rod of conventional Ti C adopt the electric spark deposition techniques to obtain on the spot-wedling electrode surface 2Coating and the TiC coating life-span when spot welding thickness is the galvanized steel plain sheet of 0.8mm relatively.As can be seen from the table, with example 1～4 of the present invention at the deposited TiB that obtains of electrode surface 2The life-span of coating and the deposited rod of conventional Ti C increased in the life-span of the deposited TiC coating that obtains of electrode surface, were applicable to the connection of mechanical industry spot welding zinc coated steel.
Table 2
Average life span when spot welding thickness is the galvanized steel plain sheet of 0.8mm
Comparative Examples (TiC coating) 1000
Embodiment 1 1400
Embodiment 2 1500
Embodiment 3 1550
Embodiment 4 1450
Table 3 are examples of the present invention 1～4 with the deposited rod of conventional Ti C at the deposited TiB that obtains of spot-wedling electrode electric spark on surface 2Coating and the TiC coating life-span when micro welding thickness is the nickel-clad steel plate of 0.1mm relatively.As can be seen from the table, with example 1～4 of the present invention at the deposited TiB that obtains of electrode surface 2The life-span of coating and the deposited rod of conventional Ti C life-span of the deposited TiC coating that obtains of electrode surface quite or increase, be applicable to the connection of microelectronic industry micro welding coated plate.Use TiB of the present invention 2Deposited rod adopts the electric spark deposition techniques can obtain TiB on the spot-wedling electrode surface 2Coating, this coating cost is low, a kind of good conductivity, thermal conductivity is good, the prolongation electrode life that fusing point high energy is bigger, is better than the TiC coating that the deposited rod of conventional Ti C adopts the electric spark deposition techniques to obtain.
Table 3
Average life span when micro welding thickness is the nickel-clad steel plate of 0.1mm
Comparative Examples (TiC coating) 1200
Embodiment 1 1300
Embodiment 2 1400
Embodiment 3 1250
Embodiment 4 1300
Description of drawings:
Fig. 1 is TiB of the present invention 2The microphoto of deposited rod, middle particle is TiB 2Particle;
Fig. 2 is for using TiB of the present invention 2Deposited rod obtains TiB on the spot-wedling electrode surface by the electric spark deposition techniques 2The microscopic structure of coating, middle particle TiB 2Particle;
Fig. 3 is for using TiB of the present invention 2Deposited rod obtains TiB on the spot-wedling electrode surface by the electric spark deposition techniques 2The section electromicroscopic photograph of coating
Fig. 4 is the face scanning of Fig. 3 relevant position Ti element.
The specific embodiment
Example 1: with 736 gram TiB 2The Ni powder of powder, 185 grams; the Mo powder of 61 grams; the W powder of 9 grams and 9 gram Co powder evenly mixed the back ball milling 52 hours; the viscose glues that the above-mentioned mixed-powder that ball milling is good adds 83 grams are pressed into needed bar, and bar is become a useful person stand-by at 1710 ℃ of following sintering 220 ℃ of backs of coming unstuck in pressure is the Ar protective atmosphere of 100kg.
Example 2: with 756 gram TiB 2The Ni powder of powder, 184 grams; the Mo powder of 42 grams; the W powder of 10 grams and 8 gram Co powder evenly mixed the back ball milling 60 hours; the viscose glue that the above-mentioned mixed-powder that ball milling is good adds 75 grams is pressed into needed bar, and bar is to become a useful person stand-by at 1780 ℃ of following sintering in the 100kg Ar protective atmosphere 270 ℃ of backs of coming unstuck at pressure.
Example 3: with 748 gram TiB 2The Ni powder of powder, 156 grams; the Mo powder of 85 grams; the W powder of 6 grams and 5 gram Co powder evenly mixed the back ball milling 52 hours; the viscose glues that the above-mentioned mixed-powder that ball milling is good adds 91 grams are pressed into needed bar, and bar is become a useful person stand-by at 1680 ℃ of following sintering 190 ℃ of backs of coming unstuck in pressure is the Ar protective atmosphere of 100kg.
Example 4: with 757 gram TiB 2The Ni powder of powder, 162 grams; the Mo powder of 71 grams; the W powder of 7 grams and 3 gram Co powder evenly mixed the back ball milling 52 hours; the viscose glues that the above-mentioned mixed-powder that ball milling is good adds 86 grams are pressed into needed bar, and bar is become a useful person stand-by at 1750 ℃ of following sintering 280 ℃ of backs of coming unstuck in pressure is the Ar protective atmosphere of 100kg.
As described in accompanying drawing: Fig. 1, the 2nd, TiB of the present invention 2Deposited rod and use TiB of the present invention 2Deposited rod obtains TiB on the spot-wedling electrode surface by the electric spark deposition techniques 2The micro-organization chart of coating.Fig. 3, the 4th uses TiB of the present invention 2Deposited rod obtains TiB on the spot-wedling electrode surface by the electric spark deposition techniques 2The face scanning of the section electromicroscopic photograph of coating and relevant position Ti element.

Claims (4)

1, the deposited rod used of the deposited coating of spot-wedling electrode electric spark on surface, described deposited rod is characterized in that: it is 12%～24% Ni that described deposited rod contains mass percent, 4%～10% Mo, 0.15%～1.0% W, 0.15%～1.0% Co, all the other are TiB 2
2, the preparation method of the deposited rod used of the deposited coating of spot-wedling electrode electric spark on surface according to claim 1, it is characterized in that, it may further comprise the steps: earlier with 12%～24% Ni powder, 4%～10% Mo powder, 0.15%～1.0% W powder, 0.15%～1.0% Co powder, all the other are TiB 2Powder; Evenly mix fully ball milling of back; 2%～10% of the interpolation gross mass viscose glue is pressed into needed bar in then that ball milling is the good above-mentioned mixed-powder, and it is to become a useful person at 1500 ℃～1900 ℃ following sintering in 980 newton's protective atmospheres at pressure that bar fully comes unstuck back 100 ℃～300 ℃ insulations.
3, the deposited rod of using according to the deposited coating of claims 1 described spot-wedling electrode electric spark on surface, it is characterized in that: the mass percent that described deposited rod contains, containing Ni is 15%～20%, containing Mo is 4%～8.5%, containing W is 0.5%～1.0%, containing Co is 0.3%～1.0%, and all the other are TiB 2
4, the preparation method of the deposited rod of using according to the deposited coating of claims 2 described spot-wedling electrode electric spark on surface is characterized in that: described even mix the back fully the time range of ball milling be 48～72 hours; Bar is that 1650 ℃～1800 ℃ following sintering are become a useful person in temperature range.
CNB2004100607044A 2004-08-08 2004-08-08 Coated stick of spot welding electrode surface electric spark coating layer and its preparing method Expired - Fee Related CN100349687C (en)

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CNB2004100607044A CN100349687C (en) 2004-08-08 2004-08-08 Coated stick of spot welding electrode surface electric spark coating layer and its preparing method
CA002510911A CA2510911A1 (en) 2004-08-08 2005-06-23 Tib2 rod, and method of fabrication and use
US11/159,402 US20060029512A1 (en) 2004-08-08 2005-06-23 TiB2 rod, and method of fabrication and use

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CN100349687C true CN100349687C (en) 2007-11-21

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CN100445016C (en) * 2005-11-30 2008-12-24 陈铮 Copper alloy electrode for resistance weld and its manufacturing method
AU2016234943A1 (en) * 2009-07-28 2016-11-10 Alcoa Usa Corp. Composition for making wettable cathode in aluminum smelting
EP2459775B1 (en) * 2009-07-28 2018-09-05 Alcoa USA Corp. Composition for making wettable cathode in aluminum smelting
CN102618867B (en) * 2012-03-19 2013-10-16 湖南三泰新材料股份有限公司 Composite reinforcement method for TiC/TiB2 base metal ceramic on surface of roller
CN103433595B (en) * 2013-08-06 2015-07-29 苏州飞泰精工科技有限公司 There is the electrode cap built-up welding device of automation function
US10391574B2 (en) 2013-12-16 2019-08-27 Huys Industries Limited Welding method and apparatus therefor
CN103801851B (en) * 2013-12-16 2016-04-06 湖北工业大学 Spot-wedling electrode electric spark on surface deposition Al 2o 3-TiB 2deposition rod of coating and preparation method thereof
CN103805988B (en) * 2013-12-16 2016-02-10 湖北工业大学 The TiB of electrical spark cladding coating 2-ZrB 2complex phase cladding rod and preparation method thereof
CN103801858B (en) * 2013-12-16 2016-06-08 湖北工业大学 Spot-wedling electrode electric spark on surface deposition TiB2The deposition rod of-TiC coating
CN106086879A (en) 2013-12-16 2016-11-09 湖北工业大学 Rotary body electric spark on surface deposition modified technique and device
JP2016191116A (en) * 2015-03-31 2016-11-10 日本タングステン株式会社 Hard composite material, cutting tool using the same, and abrasion-resistant member
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CA2510911A1 (en) 2006-02-08
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