CN110405376A - A kind of detection method of copper alloy electrode cap welding performance - Google Patents
A kind of detection method of copper alloy electrode cap welding performance Download PDFInfo
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- CN110405376A CN110405376A CN201910667590.6A CN201910667590A CN110405376A CN 110405376 A CN110405376 A CN 110405376A CN 201910667590 A CN201910667590 A CN 201910667590A CN 110405376 A CN110405376 A CN 110405376A
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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
- B23K11/30—Features relating to electrodes
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
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Abstract
The present invention relates to welding motor performance detection technique fields, disclose a kind of detection method of copper alloy electrode cap welding performance, specifically includes the following steps: S1 preparation: electrode cap being mounted on welding machine first, the galvanized steel plain sheet with a thickness of T is selected later, starting point welder makees, and will form several solder joints after spot welding on galvanized steel plain sheet；S2 test job: it is detected including reconditioning interval；The detection of reconditioning interval is specifically includes the following steps: A1 electric welding solder joint and A2 spot welding test piece；Repeat A1 electric welding solder joint and A2 spot welding test piece operation, until Spot size is less than or equal to
Description
Technical field
The present invention relates to welding motor performance detection technique fields, and in particular to a kind of copper alloy electrode cap welding performance
Detection method.
Background technique
Electric resistance welding by electrode applies pressure after exactly combining workpiece, passes through the contact surface of connector and neighbouring using electric current
The method that the resistance heat that region generates is welded.The electricity that electric resistance welding flows through work piece interface using electric current and adjacent domain generates
Thermal resistance effect is heated to fusing or mecystasis, is allowed to form a kind of method of metal bonding.Electric resistance welding method mainly has
Four kinds, i.e. spot welding, seam weld, projection welding, butt welding.
Electrode cap belongs to one kind of welding electrode, for the welding of resistance welding equipment, such as fixed spot welder, suspension type
Mash welder and manipulator electric welding machine etc., because being placed on electrode tie rod, so referred to as electrode cap, material is mostly chromium-zirconium-copper,
There is dispersion copper.It welds (generally 1000-1200 point) after certain number, reconditioning or replacement is needed due to abrasion, belongs to weldering
Connect consumables.
The service life of electrode and material relationships are very close in welding process, and alloyed copper producer is numerous at present, how therefrom to examine
The material of superior performance is extremely important out, this is directly related to welding quality and cost.Material provided by alloyed copper manufacturer
Matter report is the static performance index of material, and in welding process frequent hot and cold alternation can have to material duration performance compared with
It is big to influence, therefore static performance index is inaccurate for evaluating the standard of electrode welding performance.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of copper alloy electrode cap welding performance
Detection method, the invention have chosen variable conduct in actual use in order to dynamically indicate the performance of electrode material
Detection describes the service performance of electrode cap, and the detection method established through the invention makes user in numerous products
More accurately select most suitable product.
To achieve the goals above, the invention provides the following technical scheme:
A kind of detection method of copper alloy electrode cap welding performance, specifically includes the following steps:
Electrode cap: being mounted on welding machine by S1 preparation first, selects the galvanized steel plain sheet with a thickness of T, starting point later
Welder makees, and will form several solder joints after spot welding on the galvanized steel plain sheet；
S2 test job: it is detected including reconditioning interval；
The reconditioning interval detection is specifically includes the following steps: A1 is welded solder joint: being welded on the galvanized steel plain sheet
Solder joint, the electric welding number of welds are 20-100 solder joint；
A2 spot welding test piece: after the electric welding solder joint work of step A1 each time, spot welding test piece, the test piece spot welding are carried out
Quantity is 3-10 pairs, and every two test piece partners test piece, then does breaking test to each pair of test piece, and record each pair of test piece
Required pulling force size, is recorded as shearing strength when Spot size or the record each pair of test piece is completely isolated；
Repeat A1 electric welding solder joint and A2 spot welding test piece operation, until the Spot size is less than or equal toShi Huo
When the shearing strength is less than or equal to tensile strength, specific tensile strength numerical value is shown in that Fig. 6, tensile strength master meter record this
When galvanized steel plain sheet on solder joint number, be reconditioning space-number, since frequent hot and cold alternation and electrode pressure cause when welding
Electrode cap front end material softens, degeneration and formation that diameter becomes larger along with impurity alloy-layer, will cause current density and reduces and causes
Make solder joint not prison welding, so to carry out reconditioning to the operative end surface of electrode cap, undesirable alloy-layer reconditioning is fallen, reconditioning interval
The more representative material durability of points is good, and the performance that end face speedup Gao Ze represents material is poor；It is measured by reconditioning interval data
The electric conductivity and heat resistance of the electrode cap, reconditioning space-number is bigger, and the electric conductivity and heat resistance of product are better.
In the present invention, it is preferred to, the S2 test job further includes the detection of electrode cap end face change rate and/or electrode cap
The detection of end face copper falling speed, the detection of electrode cap end face change rate are described for judging the heat-resisting hardness performance of electrode cap
Cap end copper falling speed detection, for judging the heat-resisting anti-fatigue performance of motor cap.
In the present invention, it is preferred to, electrode cap end face change rate detects specifically includes the following steps: every electric welding 40-
When 100 solder joints, the longest diameter of measuring electrode cap end face and the numerical value of vice-minister's diameter, this longest diameter and vice-minister's diameter
Numerical value and the longest diameter of last time measurement and the numerical value of vice-minister's diameter calculate separately change rate, as electrode cap end face changes
Rate, when electric current flows front end from horn (bar), the electric current maximum fever that front end outer ring is born at most, is also easiest to soften.This is just
It is the main reason for front end becomes larger, this is also the key place for testing electrode cap material, and end face diameter is in high temperature in welding process
It can be gradually increased under high pressure, current density can be reduced, will affect welding quality after rising to certain size；By measuring electrode
Cap end face change rate evaluates the heat-resisting hardness performance of product, and electrode cap end face change rate is smaller, the heat-resisting hardness performance of product
Better.
In the present invention, it is preferred to, the testing procedure of electrode cap end face change rate: when 40 solder joints of every electric welding, survey
The longest diameter of electrode cap end face and the numerical value of vice-minister's diameter are measured, this longest diameter and the numerical value of vice-minister's diameter and last time are surveyed
The longest diameter of amount and the numerical value of vice-minister's diameter calculate separately change rate.
In the present invention, it is preferred to, if electrode cap end face copper falling speed detection is specifically includes the following steps: electric welding
Dry group solder joint, every group is 2-10 solder joint, and to every group, the last one solder joint is taken pictures, then paired observation Different electrodes cap strip
For material when every group of the last one solder joint welds, when the copper of electrode cap end face falls off and adheres on galvanized steel plain sheet solder joint, copper is at every group
The distribution situation of the last one solder joint, in the welding process, the temperature at cap end is up to 700 degree or more, at about 3,000 Ns
It under pressure, has micro yellow copper and is bonded on the solder joint of argenteous galvanized steel plain sheet, observed by a certain number of solder joints
The area that the trace that yellow copper falls off on silvery white galvanized steel plain sheet solder joint, i.e. yellow copper are distributed on silvery white galvanized steel plain sheet is big
It is small, the performance of this available material peel at high temperature, copper fall off more its weld service life must be low, welding
The speed that end face copper falls off when galvanized sheet is apparently higher than welding general steel plate；By comparing Different electrodes cap material copper in welding
Fall off and the number that adheres on steel plate solder joint judges the power of the anti-fatigue performance of copper product, cap end face copper fall off it is slower,
The heat-resisting anti-fatigue performance of product is better.
In the present invention, it is preferred to, the electrode cap end face copper falling speed detection is specifically includes the following steps: every electric welding
When 5 solder joints, to every group, the last one solder joint is taken pictures, then paired observation Different electrodes cap material every group the last one
When solder joint welds, when the copper of electrode cap end face falls off and adheres on galvanized steel plain sheet solder joint, copper the last one solder joint described in every group
Distribution situation.
In the present invention, it is preferred to, the thickness T of the galvanized steel plain sheet is 2mm-4mm, and the welding current is 7000-
1300A, the weld interval are 10-40 milliseconds, and the electrode pressure is 2000-4000N.
In the present invention, it is preferred to, the S2 test job: detected including reconditioning interval；
The reconditioning interval detection is specifically includes the following steps: A1 is welded solder joint: being welded on the galvanized steel plain sheet
Solder joint, the electric welding number of welds are 40 solder joints；
A2 spot welding test piece: after the electric welding solder joint work of step A1 each time, spot welding test piece, the test piece spot welding are carried out
Quantity is 3 pairs, then does breaking test to each pair of test piece, and records each pair of test piece Spot size or record each pair of test piece is complete
Fully separating pulling force size required when opening, is recorded as shearing strength；
Repeat A1 electric welding solder joint and A2 spot welding test piece operation, until the Spot size is less than or equal toShi Huo
When the shearing strength is less than or equal to tensile strength, the solder joint number on galvanized steel plain sheet at this time is recorded, is reconditioning space-number.
Compared with prior art, the beneficial effects of the present invention are:
The present invention passes through detection three reconditioning interval, electrode cap end face change rate and cap end copper falling speed dynamic parameters,
The welding performance of the service life of inspecting electrode cap makes user in numerous products to judge the credit rating of electrode cap
In more accurately select most suitable product.
Detailed description of the invention
Fig. 1 is that the testing result of cap end face copper falling speed in embodiment 3, embodiment 6 and embodiment 9 in the present invention is shone
Piece.
Fig. 2 is the schematic diagram of Spot size signified in invention.
Fig. 3 is the schematic diagram of electrode cap end face signified in invention.
Fig. 4 is the work flow diagram of detection method.
Fig. 5 is the work flow diagram of reconditioning interval detection in detection method.
Fig. 6 is the tensile strength master meter of unlike material test piece in embodiment 10 in the present invention.
Main element symbol description in attached drawing: 1- Spot size, 2- electrode cap end face, 3- solder joint.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component
Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it
It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Embodiment 1: the relevant parameter of chromium-zirconium-copper A material is as shown in table 1；
1. sample material information of table
Step 1: chromium-zirconium-copper A material electrode cap, is mounted on welding machine, welding machine model are as follows: SMD- by S1 preparation first
20, the galvanized steel plain sheet of 2mm thickness is selected later, and welding current is set as 10000A, and weld interval is set as 25 milliseconds, electrode pressure
It is set as 3000N, starting point welder makees；
Step 2: S2 test job, including the detection of reconditioning interval；
Reconditioning interval detection specifically includes the following steps:
Step A1, is welded solder joint, and the electric welding solder joint work carries out several groups, 40 solder joints of every group of electric welding；
Step A2, spot welding test piece, after electric welding solder joint work described in every group, spot welding 3 is to test piece, then to each pair of examination
Piece does breaking test, and records each pair of test piece Spot size, finally takes the average value of 3 nugget numerical value；
Repeat A1 electric welding solder joint and A2 spot welding test piece operation, until the Spot size is less than or equal toWhen, the solder joint number on galvanized steel plain sheet at this time is recorded, is reconditioning space-number.
Embodiment 2: unlike the first embodiment, electrode cap end face change rate is carried out while the step 2 carries out
Test；
When 40 solder joints of every electric welding, the longest diameter of measuring electrode cap end face and the numerical value of vice-minister's diameter, this longest
The numerical value of the longest diameter and vice-minister's diameter of the numerical value of diameter and vice-minister's diameter and last time measurement calculates separately change rate.
Embodiment 3: unlike the first embodiment, cap end face copper falling speed is carried out while the step 2 carries out
Detection；
When 5 solder joints of every electric welding, copper falls off and adheres on galvanized steel plain sheet solder joint when photographing to record the welding of the last one solder joint
Number, until carried out when the 20th solder joint last time photograph to record (see attached drawing 1, black shade position in the middle part of solder joint in attached drawing 1
The copper fallen for the end face of electrode cap).
Embodiment 4: the relevant parameter of chromium-zirconium-copper B material is as shown in table 2；
2. sample material information of table
Step 1: chromium-zirconium-copper B material electrode cap, is mounted on welding machine, welding machine model are as follows: SMD- by S1 preparation first
20, the galvanized steel plain sheet of 2mm thickness is selected later, and welding current is set as 10000A, and weld interval is set as 25 milliseconds, electrode pressure
It is set as 3000N, starting point welder makees；
Step 2: S2 test job, including the detection of reconditioning interval；
Reconditioning interval detection specifically includes the following steps:
Step A1, is welded solder joint, and the electric welding solder joint work carries out several groups, 40 solder joints of every group of electric welding；
Step A2, spot welding test piece, after electric welding solder joint work described in every group, spot welding 3 is to test piece, then to each pair of examination
Piece does breaking test, and records each pair of test piece Spot size, finally takes the average value of 3 nugget numerical value；
Repeat A1 electric welding solder joint and A2 spot welding test piece operation, until the Spot size is less than or equal toWhen, the solder joint number on galvanized steel plain sheet at this time is recorded, is reconditioning space-number.
Embodiment 5: as different from Example 4, electrode cap end face change rate is carried out while the step 2 carries out
Test；
When 40 solder joints of every electric welding, the longest diameter of measuring electrode cap end face and the numerical value of vice-minister's diameter, this longest
The numerical value of the longest diameter and vice-minister's diameter of the numerical value of diameter and vice-minister's diameter and last time measurement calculates separately change rate.
Embodiment 6: as different from Example 4, cap end face copper falling speed is carried out while the step 2 carries out
Detection；
When 5 solder joints of every electric welding, copper falls off and adheres on galvanized steel plain sheet solder joint when photographing to record the welding of the last one solder joint
Number, until carried out when the 20th solder joint last time photograph to record (see attached drawing 1, black shade position in the middle part of solder joint in attached drawing 1
The copper fallen for the end face of electrode cap).
Embodiment 7: the relevant parameter of chromium-zirconium-copper C material is as shown in table 3；
3. sample material information of table
Step 1: chromium-zirconium-copper C material electrode cap, is mounted on welding machine, welding machine model are as follows: SMD- by S1 preparation first
20, the galvanized steel plain sheet of 2mm thickness is selected later, and welding current is set as 10000A, and weld interval is set as 25 milliseconds, electrode pressure
It is set as 3000N, starting point welder makees；
Step 2: S2 test job, including the detection of reconditioning interval；
Reconditioning interval detection specifically includes the following steps:
Step A1, is welded solder joint, and the electric welding solder joint work carries out several groups, 40 solder joints of every group of electric welding；
Step A2, spot welding test piece, after electric welding solder joint work described in every group, spot welding 3 is to test piece, then to each pair of examination
Piece does breaking test, and records each pair of test piece Spot size, finally takes the average value of 3 nugget numerical value；
Repeat A1 electric welding solder joint and A2 spot welding test piece operation, until the Spot size is less than or equal toWhen, the solder joint number on galvanized steel plain sheet at this time is recorded, is reconditioning space-number.
Embodiment 8: as different from Example 7, electrode cap end face change rate is carried out while the step 2 carries out
Test；
When 40 solder joints of every electric welding, the longest diameter of measuring electrode cap end face and the numerical value of vice-minister's diameter, this longest
The numerical value of the longest diameter and vice-minister's diameter of the numerical value of diameter and vice-minister's diameter and last time measurement calculates separately change rate.
Embodiment 9: as different from Example 7, cap end face copper falling speed is carried out while the step 2 carries out
Detection；
When 5 solder joints of every electric welding, copper falls off and adheres on galvanized steel plain sheet solder joint when photographing to record the welding of the last one solder joint
Number, until carried out when the 20th solder joint last time photograph to record (see attached drawing 1, black shade position in the middle part of solder joint in attached drawing 1
The copper fallen for the end face of electrode cap)；
Embodiment 3, embodiment 6 and embodiment 9 take pictures situation as described in Figure of description 1, as shown in Figure 1: chromium-zirconium-copper B
The copper that material solder joint sticks out is minimum, and the electrode cap of three kinds of different materials is expected by comparison chromium-zirconium-copper A material, chromium-zirconium-copper B material and chromium-zirconium-copper C
In welding copper fall off and adhere on steel plate solder joint number come judge copper product anti-fatigue performance power, cap end face copper is de-
What is fallen is slower, and the heat-resisting anti-fatigue performance of product is better, it can thus be appreciated that the anti-fatigue performance of chromium-zirconium-copper B material is best.
The related data of embodiment 1-2, embodiment 4-5 and embodiment 7-8 are recorded, concrete condition is as described in table 4 and table 5:
4. sample material information of table
The different technologies of the domestic chromium-zirconium-copper of three of the above material representative are horizontal.
The detection data of 5. electrode cap end face diameter of table and Spot size record
Table 4 is chromium-zirconium-copper A material electrode cap, chromium-zirconium-copper B material electrode cap and chromium-zirconium-copper C material three kinds of Different electrodes cap strips of electrode cap
The static performance index of material, table 5 are that chromium-zirconium-copper A material electrode cap, chromium-zirconium-copper B material electrode cap and chromium-zirconium-copper C expect three kinds of electrode cap not
With the Spot size of electrode cap material and the detection data of electrode cap end face diameter, it can be seen from Table 5 that: chromium-zirconium-copper A material electricity
After 720 solder joints, Spot size 4.70*4.80 is less than polar capTherefore chromium-zirconium-copper A material electrode cap
Reconditioning spacing value is 720；It will also be appreciated that chromium-zirconium-copper B expects electrode cap after 720 solder joints, Spot size 5.50*5.40 is small
InTherefore the reconditioning spacing value of chromium-zirconium-copper B material electrode cap is 720；Chromium-zirconium-copper C expects that electrode cap is welded at 640
After point, Spot size 5.55*5.45 is less thanTherefore the reconditioning spacing value of chromium-zirconium-copper A material electrode cap is
680；The electric conductivity and heat resistance of the electrode cap are measured by reconditioning interval data, reconditioning space-number is bigger, the conduction of product
Property is better with heat resistance；Therefore the electric conductivity and heat resistance of chromium-zirconium-copper A material electrode cap and chromium-zirconium-copper B material electrode cap are better than chromium
Zirconium copper C expects electrode cap.
Its change rate is calculated to electrode cap end face diameter data in table 5, specific evaluation is shown in Table 6:
6. electrode cap end face change rate data of table calculate
Remarks: expecting electrode cap with chromium-zirconium-copper A, and counting is 40, and electrode cap end face diameter is 4.05*4.40, and points are 80,
For electrode cap end face diameter is 4.55*4.40, the sum of absolute value of electrode cap end face diameter change rate=│ (4.55- is calculated
4.05)/4.05 │=0.123 │+│ (4.40-4.40)/4.40；
Electrode cap is expected with chromium-zirconium-copper B, and counting is 40, and electrode cap end face diameter is 4.00*4.20, and points are 80, electrode
For cap end face diameter is 4.50*4.30, the sum of absolute value of calculating electrode cap end face diameter change rate=│ (4.50-4.00)/
4.00 │=0.149 │+│ (4.30-4.20)/4.20；
Electrode cap is expected with chromium-zirconium-copper C, and counting is 40, and electrode cap end face diameter is 4.50*4.55, and points are 80, electrode
For cap end face diameter is 4.80*4.60, the sum of absolute value of calculating electrode cap end face diameter change rate=│ (4.80-4.50)/
4.50 │=0.078 │+│ (4.60-4.55)/4.55；
Chromium-zirconium-copper A expects the electrode cap end face of electrode cap, chromium-zirconium-copper B material electrode cap and chromium-zirconium-copper C material electrode cap in contrast table 6
Known to the delta data of diameter: to the summation=1.4864 of the sum of chromium-zirconium-copper A material electrode cap all changes rate absolute value, to chromium-zirconium-copper
B expects the sum of electrode cap all changes rate absolute value summation=1.0358, to chromium-zirconium-copper C material electrode cap all changes rate absolute value it
With summation=1.1586, the heat-resisting hardness performance of product is evaluated by measuring electrode cap end face change rate, electrode cap end face becomes
Rate is smaller, and the heat-resisting hardness performance of product is better, and chromium-zirconium-copper B material electrode cap end face change rate is minimum known to data
1.0358, therefore the chromium-zirconium-copper B material heat-resisting hardness performance of electrode cap is best.
Embodiment 10:
Step 1: S1 preparation, expects that electrode cap, chromium-zirconium-copper B material electrode cap and chromium-zirconium-copper C expect electricity for chromium-zirconium-copper A respectively
Polar cap is mounted on welding machine, welding machine model are as follows: SMD-20 selects the galvanized steel plain sheet of 2mm thickness later, and welding current is set as
10000A, weld interval are set as 25 milliseconds, and electrode pressure is set as 3000N, and starting point welder makees；
Step 2: S2 test job, including the detection of reconditioning interval；
Reconditioning interval detection specifically includes the following steps:
Step A1, is welded solder joint, and the electric welding solder joint work carries out several groups, 40 solder joints of every group of electric welding；
Step A4, spot welding test piece, after electric welding solder joint work described in every group, test piece of the spot welding 3 to 270 materials, then it is right
Breaking test is done in each pair of test piece, and while recording that each pair of test piece is completely isolated required pulling force size, is recorded as cutting
Pulling force is cut, the average value of 3 pairs of test piece pulling force is finally taken；
Repeat A1 electric welding solder joint and A2 spot welding test piece operation, until the shearing strength is strong less than or equal to tension
When spending (8826N), the solder joint number on galvanized steel plain sheet at this time is recorded, is reconditioning space-number.
(corresponding tensile strength is by Fig. 6 at this time for detection data record of the table 7. to the test piece progress shearing strength of 270 materials
It can obtain, numerical value 8826N)
Remarks: using a testing machine is simply drawn, model PT-3000 carries out chromium-zirconium-copper A material electrode cap, chromium-zirconium-copper B material electricity
The test of polar cap and chromium-zirconium-copper C material electrode cap shearing strength.
Table 7 is chromium-zirconium-copper A material electrode cap, chromium-zirconium-copper B material electrode cap and chromium-zirconium-copper C material three kinds of Different electrodes cap strips of electrode cap
Expect the detection data of shearing strength, it can be seen from Table 7 that: chromium-zirconium-copper A expects electrode cap after 720 solder joints, and shearing strength is
8820N is less than tensile strength, therefore the reconditioning spacing value of chromium-zirconium-copper A material electrode cap is 720；It will also be appreciated that chromium-zirconium-copper B expects electrode
Cap is after 720 solder joints, shearing strength 8825N, is less than tensile strength, therefore the reconditioning spacing value of chromium-zirconium-copper B material electrode cap is
720；Chromium-zirconium-copper C expects electrode cap after 640 solder joints, and shearing strength 8821N is less than tensile strength, therefore chromium-zirconium-copper A expects electrode
The reconditioning spacing value of cap is 680；The electric conductivity and heat resistance of the electrode cap, reconditioning space-number are measured by reconditioning interval data
Bigger, the electric conductivity and heat resistance of product are better；Therefore chromium-zirconium-copper A material electrode cap and chromium-zirconium-copper B material electrode cap electric conductivity with
Heat resistance is consistent with the experiment conclusion obtained in table 5 by Spot size data better than chromium-zirconium-copper C material electrode cap.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to
In the covered the scope of the patents of the present invention.
Claims (8)
1. a kind of detection method of copper alloy electrode cap welding performance, which is characterized in that specifically includes the following steps:
Electrode cap: being mounted on welding machine by S1 preparation first, selects the galvanized steel plain sheet with a thickness of T, starting point welder later
Make, several solder joints will be formed after spot welding on the galvanized steel plain sheet；
S2 test job: it is detected including reconditioning interval；
The reconditioning interval detection is specifically includes the following steps: A1 is welded solder joint: electric welding solder joint is carried out on the galvanized steel plain sheet,
The electric welding number of welds is 20-100 solder joint；
A2 spot welding test piece: after the electric welding solder joint work of step A1 each time, spot welding test piece, the test piece spot welding quantity are carried out
It is 3-10 pairs, then breaking test is done to each pair of test piece, and records each pair of test piece Spot size or record each pair of test piece is complete
Fully separating pulling force size required when opening, is recorded as shearing strength；
Repeat A1 electric welding solder joint and A2 spot welding test piece operation, until the Spot size is less than or equal toWhen or described cut
When cutting pulling force less than or equal to tensile strength, the solder joint number on galvanized steel plain sheet at this time is recorded, is reconditioning space-number.
2. a kind of detection method of copper alloy electrode cap welding performance according to claim 1, which is characterized in that the survey
Trial work work further includes the detection of electrode cap end face change rate and/or the detection of electrode cap end face copper falling speed, the electrode cap end face
The detection of change rate, for judging the heat-resisting hardness performance of electrode cap, the cap end copper falling speed detection, for judging motor cap
Heat-resisting anti-fatigue performance.
3. a kind of detection method of copper alloy electrode cap welding performance according to claim 2, which is characterized in that the electricity
Change rate detection in polar cap end face is specifically includes the following steps: when 40-100 solder joint of every electric welding, the longest of measuring electrode cap end face
The longest diameter and vice-minister of the numerical value of diameter and vice-minister's diameter, this longest diameter and the numerical value of vice-minister's diameter and last time measurement
The numerical value of diameter calculates separately change rate, as electrode cap end face change rate.
4. a kind of detection method of copper alloy electrode cap welding performance according to claim 3, which is characterized in that the electricity
The testing procedure of polar cap end face change rate: when 40 solder joints of every electric welding, the longest diameter and vice-minister's diameter of measuring electrode cap end face
Numerical value, the numerical value and the longest diameter of last time measurement and the numerical value of vice-minister's diameter of this longest diameter and vice-minister's diameter distinguishes
Calculate change rate.
5. a kind of detection method of copper alloy electrode cap welding performance according to claim 2, which is characterized in that described
Copper falling speed detection in electrode cap end face is specifically includes the following steps: electric welding several groups solder joint, and every group is 2-10 solder joint, to every
The last one solder joint of group is taken pictures, and then paired observation Different electrodes cap material is when every group of the last one solder joint welds, electricity
When the copper of polar cap end face falls off and adheres on galvanized steel plain sheet solder joint, the distribution situation of copper the last one solder joint described in every group.
6. a kind of detection method of copper alloy electrode cap welding performance according to claim 5, which is characterized in that the electricity
Copper falling speed detection in polar cap end face is specifically includes the following steps: when 5 solder joints of every electric welding, to every group of the last one solder joint progress
Take pictures, then paired observation Different electrodes cap material when every group of the last one solder joint welds, the copper of electrode cap end face fall off and
When adhering on galvanized steel plain sheet solder joint, the distribution situation of copper the last one solder joint described in every group.
7. a kind of detection method of copper alloy electrode cap welding performance according to claim 1, which is characterized in that the plating
The thickness T of zinc steel plate is 2mm-4mm, and the welding current is 7000-1300A, and the weld interval is 10-40 milliseconds, described
Electrode pressure is 2000-4000N.
8. a kind of detection method of copper alloy electrode cap welding performance according to claim 1, which is characterized in that the S2
Test job: it is detected including reconditioning interval；
The reconditioning interval detection is specifically includes the following steps: A1 is welded solder joint: electric welding solder joint is carried out on the galvanized steel plain sheet,
The electric welding number of welds is 40 solder joints；
A2 spot welding test piece: after the electric welding solder joint work of step A1 each time, spot welding test piece, the test piece spot welding quantity are carried out
It is 3 pairs, then breaking test is done to each pair of test piece, and records each pair of test piece Spot size or record and divide each pair of test piece completely
Required pulling force size, is recorded as shearing strength when leaving；
Repeat A1 electric welding solder joint and A2 spot welding test piece operation, until the Spot size is less than or equal toWhen or described cut
When cutting pulling force less than or equal to tensile strength, the solder joint number on galvanized steel plain sheet at this time is recorded, is reconditioning space-number.
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