CN1199762C - Solid wire for welding - Google Patents
Solid wire for welding Download PDFInfo
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- CN1199762C CN1199762C CNB021203237A CN02120323A CN1199762C CN 1199762 C CN1199762 C CN 1199762C CN B021203237 A CNB021203237 A CN B021203237A CN 02120323 A CN02120323 A CN 02120323A CN 1199762 C CN1199762 C CN 1199762C
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F2700/00—Lifting apparatus
- B66F2700/12—Lifting platforms for vehicles or motorcycles or similar lifting apparatus
- B66F2700/123—Details concerning the support members or devices not related to the lifting itself
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Abstract
The present invention relates to a solid wire for welding which is characterized in that oxide scale with 0.002-0.3 mg per 100 mm<2> is formed on the wire surface, at least one kind selected from a group of MoS2 , WS2 and graphite whose particle size is 0.1-10 um is coated on the surface of the wire in the amount of 0.01-2 g per 10 kg wire, and plating is not applied. The invention is capable of decreasing the load on the environment suppressing the wear of a current supply tip in welding, and improving the weldability, current supply property and rust prevention of the wire and even under the severe welding environment condition.
Description
Technical field
The present invention relates to not impose the copper plating on the surface, be applicable to the welding solid welding wire (welding solid wire) of sealing gland arc welding, particularly purpose is to reduce the welding solid welding wire of carrying capacity of environment.
Background technology
In the prior art, for arc welding solid welding wire, there is the welding wire that does not carry out the copper plating on the surface.If use these solid welding wires that do not impose the copper plating from the teeth outwards to weld,, give the electric connection noticeable wear when welding though do not produce steel cuttings.
Therefore, use the arc welding solid welding wire that imposes the copper plating on the surface recently.When using these welding wires that impose the copper plating to weld, the wearing and tearing of giving electric connection in the time of can suppressing to weld, the while can be guaranteed the resistance to rust of welding wire.
In addition, as the method for the weldability that improves this welding wire, energising property, rust-preventing characteristic, the known technology (spy opens clear 55-141395 and the clear 55-128395 of Te Kai) that on welding wire surface, applies the mixture of sulphur, molybdenum bisuphide and graphite.
But, on the surface of arc welding, impose in the operation of copper plating with the solid welding wire, owing to consume a large amount of acid solutions, alkaline solution and washings etc., thereby exist the very big such problem of carrying capacity of environment.Like this, if existing welding wire with copper plating is omitted former line pickling to reduce carrying capacity of environment, the adaptation variation of copper plating can take place then, the copper plating is peeled off from welding wire, fills up the unfavorable condition of spring lining inside.Therefore, must carry out pickling process, not allow the oxidation scale to remain on the surface of welding wire existing copper plating welding wire.
And, even the technology of sulphur, molybdenum bisuphide and graphite mixture that will apply on welding wire surface is used for the solid welding wire do not electroplated merely, though can reduce the wear extent of some joints really, but use welding robot in recent years, carry out in long-time continuous under the very strict welding surroundings condition of welding procedure of high electric current, for weldability, energising property and the rust-preventing characteristic that improves welding wire, may not be abundant.
Summary of the invention
The present invention proposes in view of these problems, its purpose be to provide a kind of when suppressing welding to the load that reduces in the electric connection wearing and tearing environment, even under the welding surroundings condition of strictness, also can improve the welding solid welding wire of weldability, energising property and the rust-preventing characteristic of welding wire.
Welding of the present invention solid welding wire is characterized in that, every 100mm
2Welding wire surface forms 0.002 to 0.3mg oxidation scale, and the amount coating particle diameter with every 10kg welding wire 0.01～2g on welding wire surface is the MoS that is selected from of 0.1～10 μ m
2, WS
2With more than one material of graphite, do not impose the copper plating.
In the present invention, on welding wire surface, an amount of oxidation scale forms from the teeth outwards, and therefore, the fusion of oxidation scale is solidified at the contact of giving electric connection when giving the contact of electric connection.Therefore, cover contact, can further suppress its wearing and tearing to electric connection with the overlay film of iron oxide.
With in solid welding wire, preferably apply at least a grease in vegetable oil, animal oil, mineral oil and the artificial oil of being selected from of every 10kg welding wire 0.2～2.0g in this welding from the teeth outwards.Owing to having reduced and, therefore can further having reduced wearing and tearing to electric connection to the friction between the electric connection.
In addition, it consists of and contains for example C:0.01～0.12 quality %, Si:0.2～1.2 quality %, Mn:0.5～2.5 quality %, P:0.001～0.03 quality % and S:0.001～0.03 quality %.
Can also contain Ti and Zr with the amount that adds up to 0.03～0.30 quality %.The Mo that further can contain 0.01～0.60 quality %.
Description of drawings
Fig. 1 is the figure that expression overlay film of the present invention forms state, (a) is the profile that the position relation of electric connection and solid welding wire is given in expression, (b) is the enlarged drawing of the profile key component shown in (a).
Fig. 2 is the schematic diagram of expression oxidation scale existence.
Wherein, 1: overlay film, 2: solid welding wire, 3: give electric connection, 12: the oxidation scale.
The specific embodiment
Present inventors are in order to solve above-mentioned problem, carried out concentrated research, found that in the not plating solid welding wire that does not impose copper plating from the teeth outwards,, on the surface of the solid welding wire of this residual oxidation scale, apply an amount of MoS simultaneously by residual oxidation scale on the surface of welding wire
2, WS
2And graphite, the wearing and tearing of giving electric connection in the time of can suppressing to weld thus.At this moment,, also can omit the pickling process of former line, reduce the carrying capacity of environment in the manufacturing process if as the engagement scale after the use hot rolling of oxidation scale source.
Formed from the teeth outwards in the solid welding wire of oxidation scale, the mechanism of the wearing and tearing of giving electric connection when reducing welding thinks as described below.
For example, be 280 to 300A if make welding current, the employing diameter is that the solid welding wire of 1.2mm welds, and then the contact with giving the electric connection front end of solid welding wire is under the state of fusion, and electric current is by between them.At this moment, impose the copper plating the prior art if resemble on the surface of solid welding wire, then fusion is taking place with the contact place that gives the electric connection front end in plated copper film.Then, fill up melting loss from the molten copper of plated copper film to the electric connection front edge contact.As a result, adopt the existing solid welding wire that imposes the copper plating, can suppress wearing and tearing to electric connection.Relative therewith, adopt the existing solid welding wire that does not impose the copper plating, by the oxidation scale that produces on the plain line of welding wires such as pickling, can remove major part, there is not the melting loss of filling up to electric connection front edge contact place on the welding wire surface, therefore, becomes very for the wearing and tearing of electric connection more.
On the other hand, as described herein,, when forming an amount of oxidation scale from the teeth outwards, filled up by the overlay film of the iron oxide that forms by the oxidation scale to the melting loss on the electric connection even under the situation that does not impose the copper plating.Even the filling up on the welding wire surface of this melting loss form example of the present invention with MoS
2, WS
2During for the sulphur compound, selenium compound of representative or tellurium compound,, play a role too by being the overlay film of main component with iron sulfide, ferrous selenide or tellurium iron.
Fig. 1 is the figure that expression overlay film of the present invention forms state, (a) is the profile that the position relation of electric connection and solid welding wire is given in expression, (b) is the key position enlarged drawing of the profile of expression in (a).As everyone knows, oxygen, sulphur, selenium and the tellurium that belongs to the chalcogen of 6B family in the periodic table can reduce the surface tension of fusing point and the molten iron and the molten iron compound of iron and iron compound.Therefore, the oxidation scale fusion under lower temperature that is forming on the surface of solid welding wire 2.Then, the iron compounds such as iron oxide, iron sulfide, ferrous selenide and tellurium iron of surface tension reduction optionally cover the contact formation overlay film 1 to electric connection 3 front ends.As a result, prevented to give electric connection 3 to contact with the direct of surface of solid welding wire 2.In addition, by having covered the overlay film 1 of giving the iron compound of electric connection 3 front edge contacts, between to electric connection 3 and solid welding wire 2, pass through electric current.Like this, even the contact fusion is also filled up for the melting loss of electric connection.Wherein, because selenium and tellurium toxicity are big, therefore, if the security when considering welding should be controlled its use.
Fig. 2 is the schematic diagram of expression oxidation scale existence.Weld with the method that forms oxidation scale 12 on the surface of solid welding wire 2, for example increase the method for the oxygen on welding wire 2 surfaces, be not particularly limited.Wherein, consider, preferably when making the plain line of welding wire, have a mind to the residual oxidation scale that forms by autoxidation in its surface, when forming final product diameter, evenly remain in the method in the recess that exists on the plain line of the welding wire surface from manufacturing cost.As in the plain line of welding wire, having a mind to the method for residual oxidation scale, for example, can be when the plain line of pickling welding wire, do not remove whole oxidation scales, residual a part of oxidation scale also can use mechanical descaling only to remove the oxidation scale on top layer, and the scale of having a mind to residual engagement.Think that at this moment scale is sneaked in the wire drawing lubricant in wire-drawing process, increased the wearing and tearing of wire drawing drawing-die, wire drawing still, revolving roll etc.Therefore, after mechanical descaling, wish that the scale that adheres on the wire surface adopts mechanical lapping equipment and/or water under high pressure washing etc. to remove.Mechanical descaling can be simple bending, also can apply agley and reverse.The easiness that adopts mechanical descaling to peel off scale can be adjusted by the cooling velocity in the hot-rolled process of adjusting former line.Specifically, by the cooling velocity after the reduction hot rolling, the thickness thickening of scale becomes and peels off easily, and the scale residual quantity reduces.Otherwise, if increase cooling velocity, then scale attenuation, becoming is difficult to peel off.In addition, by adjusting the section reduction rate in the hot rolling, can adjust the amount of engagement scale.By adjusting scale amount residual in the former line, can adjust the amount of oxidation scale in the product diameter.In addition, also can remove whole oxidation scales of the plain line of welding wire fully, have a mind to form the oxidation scale when making the Wire Drawing of product diameter, also can after Wire Drawing, apply the oxidation scale to the product diameter in being used to then by pickling.And, also can be by in oxidative environment, (low temperature drying is handled, and carries out wire drawing in the time of baking) to the goods diameter, thereby forms the oxidation scale in process annealing.In addition, the valence mumber of iron can be in 1 valency, divalent or 3 valencys any one in the oxidation scale.In addition, recess is made vertical wrinkle and is formed when hot roll welding fibroin line on its surface, and for example, the condition during by the plain line of controlled rolling welding wire can be adjusted the amount and the shape of recess.
In addition, additional MoS on the surface of solid welding wire
2, WS
2There is no particular limitation with the method for graphite, for example, can during to the goods diameter, imbed MoS on the surface of the plain line of welding wire in wire drawing
2, WS
2And graphite, also can after forming the goods diameter, apply these MoS from the teeth outwards
2, WS
2And graphite.
And, by improving the slickness of solid welding wire surface, can further reduce wearing and tearing to electric connection.If the slickness of solid welding wire surface is poor, by when giving the contact of electric connection, it changes by speed, and the melting loss of electric connection takes place to give easily.As countermeasure, for example, by an amount of grease of coating on the surface of solid welding wire, thereby the slickness of raising solid welding wire can further reduce the wear extent to electric connection.
Below, welding of the present invention is illustrated in greater detail with the solid welding wire.At first, to describing with the relevant numerical definiteness reason of solid welding wire with welding.
The amount of the oxidation scale on surface: every 100mm
2
Welding wire is 0.002～0.3mg
If every 100mm
2Therefore the quantity not sufficient 0.002mg of the oxidation scale of solid welding wire surface then can not, can't suppress the wearing and tearing to electric connection at the overlay film of the contact formation q.s of giving electric connection.On the other hand, if every 100mm
2The amount of oxidation scale surpass 0.3mg, then the solid welding wire increases with giving the resistance that electrically contacts between the electric connection, thereby gives the temperature rising of electric connection, has promoted its wearing and tearing.Therefore, the amount of oxidation scale is every 100mm
2The solid welding wire is 0.002～0.3mg.
The amount of the oxidation scale of welding wire outer surface can be measured by the quality of relatively removing deoxidation scale solid welding wire before and the quality of removing deoxidation scale solid welding wire afterwards.Specifically, for example, get the determined material of 100 to 1000mm length, at first, remove organic attachment and applicator by the degreasing of acetone ultrasonic washing from the solid welding wire.Then, measure except that the quality before the deoxidation scale.In addition, if the precision of the scale that quality measurement is used is good, also can shorten determined material.Then, at room temperature carry out the catholyte of determined material, remove the deoxidation scale by using 10 volume % citric acid hydrogen, two ammonium salt solutions for example.Make current density at this moment for example be every 1m
2Determined material 100A, electrolysis time for example are 10 minutes.Then,, determine to have removed all oxidation scales, measure and removed oxidation scale quality afterwards with the cross section of scanning electron microscope observation solid welding wire.The surface area of welding wire periphery adopts range finder, at the apparent diameter of 4 point measurement welding wires, and average this measurement result, it is fully just round cylinder that welding wire is assumed to the cross section, calculates the area of barrel surface and obtains.
The mensuration number of times of oxidation scale is 5～30 times, can ask its mean value.More than the oxidation scale residual quantity, ask 5～10 times mean value, the oxidation scale is few, asks 20～30 times mean value, thereby even considers that evaluated error also can obtain enough mensuration precision.
Amount coating particle diameter with every 10kg welding wire 0.01～2g on welding wire surface is the choosing of 0.1～10 μ mFrom MoS
2, WS
2More than one materials with graphite
When giving the contact of electric connection, the amount coating with every 10kg welding wire 0.01～2g on welding wire surface is selected from MoS
2, WS
2More than one material with in the graphite can suppress the wearing and tearing to electric connection effectively, and necessary amount can be brought into play effect more than 0.01g/10kg, if more than 2g/10kg, blocking problem takes place.During particle diameter less than 0.1 μ m, can not bring into play slickness,, become the reason of obstruction if, break away from from the surface easily greater than 10 μ m.
The MoS that applies on the welding wire surface
2, WS
2Carry out with being analyzed as follows of graphite is described.
＜MoS
2, WS
2Coated weight and granularity 〉
1. apply quantitative analysis
At first, after organic solvent (for example ethanol, acetone, benzinum etc.) washing welding wire, behind the filter paper filtered wash solution, dry filter paper.Handle dissolving (A) MoS by the white cigarette that this filter paper is used " sulfuric acid " or " sulfuric acid+phosphoric acid "
2, WS
2Then, by the quantitative Mo of atom light absorption method, W.With this measured quantity is (a).Then, with the welding wire after the ethanol washing impregnated in hydrochloric acid (with concentration be 35% hydrochloric acid be 1 and water be the aqueous solution that 1 ratio is mixed) in, dissolve, from the welding wire MoS that dissociates
2, WS
2(b).Then, filter this solution with filter paper after, handle dissolving (B) MoS by white cigarette
2, WS
2, with the quantitative Mo of atom light absorption method, W.Amount with this Mo and W is (b).Then, the total amount (G) that is attached to or is embedded in the Mo and the W of welding wire surface can be calculated by following formula 1.
Formula 1
(G)＝(a)+(b)
2. the mensuration of particle diameter
Then, to MoS
2, WS
2The assay method of particle diameter describes.The MoS of Tu Fuing from the teeth outwards
2, WS
2Particle diameter obtain the MoS of above-mentioned (A)
2, WS
2Particle diameter, imbed the MoS in the surface
2, WS
2Particle diameter obtain the MoS of above-mentioned (B)
2, WS
2Particle diameter.With these MoS
2And WS
2After the drying, observe particle diameter with scanning electron microscope.
＜coated with graphite quantitative analysis 〉
The following describes the assay method of graphite.At first, with organic solvent (for example, ethanol, acetone or benzinum etc.) washing welding wire.Filter after this cleaning solution dry this glass filter with glass filter.Then, measure the carbon amount that is collected in the glass filter.With this measured quantity is (a).
On the other hand, will be immersed in the welding wire after the organic solvent washing salpeter solution (with red fuming nitric acid (RFNA) be 1, water is the aqueous solution that 1 ratio is mixed) in 120 seconds, the glass filter filtering solution is used on the surface of only dissolving welding wire.Afterwards, dry this glass filter.Then, measure the carbon amount of collecting with the glass filter of this state.With this measured quantity is (b).
For each glass filter that uses in above-mentioned each operation, before measuring, measure the carbon amount, be that (c1 c2), deducts from each measured value blank value with it.Thus, mensuration only is present near the carbon amount of welding wire surface.In addition, the carbon of solid solution is not collected by filter in the welding wire of dissolving, is dissolved in the filtrate.That is, only be attached to welding wire surface or the free carbon imbedded under the welding wire surface is collected by filter.Therefore, the total amount (D) that is attached to welding wire surface or imbeds the carbon under the surface can be calculated by following formula 2.
Formula 2
(D)＝((a)+(b))-((c1)+(c2))
The total amount (D) of this carbon is removed with the quality of welding wire, can be calculated the coated with graphite amount of every 10kg welding wire by the value of gained.
The amount of grease: every 10kg welding wire is 0.2～2.0g
If the not enough 0.2g of the every 10kg solid of the amount of the grease that applies welding wire then almost can not improve the slickness of solid welding wire, can't obtain reduction that the coating by grease brings effect to the electric connection wearing and tearing on the solid welding wire surface.On the other hand,, then increase, therefore, raise for the temperature of electric connection, promoted its wearing and tearing owing to the solid welding wire with to the resistance that electrically contacts between the electric connection if the amount of grease surpasses 2.0g.Therefore, making the amount of grease is that every 10kg solid welding wire is 0.2～2.0g.In addition, as grease, can apply for example vegetable oil, animal oil, mineral oil and artificial oil.
The amount of grease can adopt the infrared absorption method quantitative assay after the surface of for example using carbon tetrachloride washing solid welding wire.
In addition, in the present invention, welding is not particularly limited with the chemical composition of solid welding wire, still, from the viewpoint of the engineering properties of adding, weldability and the weld metal of deacidification effect, alloying component, in the preferred scope below of the content of C, Si, Mn, Ti, Zr and Mo.For example, can use and contain C:0.01～0.12 quality %, Si:0.2～1.2 quality %, Mn:0.5～2.5 quality %, the welding solid welding wire of P:0.001～0.03 quality % and S:0.001～0.03 quality %.In addition, can use the welding solid welding wire that also contains Ti and Zr with the amount that adds up to 0.03～0.30 quality %, also can use the welding solid welding wire that also contains Mo0.01～0.60 quality %.
Embodiment
Below with claims scope outside comparative example compare, embodiments of the invention are specifically described.
At first, with the plain line mechanical deflection of the welding wire that forms the oxidation scale on the surface, carry out mechanical descaling.At this moment, control the concavo-convex of plain line of welding wire and oxidation scale interface, control the thickness of oxidation scale again, thus, adjust the residual quantity of oxidation scale.Specifically, when increasing oxidation scale residual quantity, increase the concavo-convex of the plain line of welding wire surface, very unfertile land forms the oxidation scale simultaneously, is difficult to peel off from the surface.Otherwise when reducing oxidation scale residual quantity, when the plain line of welding wire was had an even surface, very heavy back formed the oxidation scale, peels off from the surface easily.Adopt the lapping device of machinery again, peel off the oxidation scale from the surface.Then, after carrying out mechanical descaling, be 1.2mm φ with the plain line Wire Drawing of welding wire to diameter.
In addition, in case of necessity, apply MoS on the plain line of the welding wire before Wire Drawing or after the Wire Drawing
2, WS
2Or graphite.Specifically, coating has added MoS on the plain line of the welding wire after mechanical descaling
2, WS
2Or the wire drawing lubricant of graphite, carry out Wire Drawing, perhaps, in grease described later, mix MoS
2, WS
2Or graphite, after Wire Drawing, apply.
And, in case of necessity, after the plain line of welding wire after washing and dry Wire Drawing, make it on the surface that charged oil droplet is coated in the plain line of welding wire by the static electric power grease that will atomize, at this moment, by atomization quantity and the applied voltage of unit of adjustment's time, can control the coating oil mass of every 10kg welding wire accurately.
In addition, to the various embodiment (No.1 is to No.17) that make by these methods and the welding solid welding wire of comparative example (No.18 is to No.27), measure the amount of oxidation scale, the concentrationization of element sulphur and the oil quantity on surface by said method, measure wear extent by method shown below simultaneously to electric connection.
The welding of using commercially available Cr-Cu system to electric connection is measured its wear extent with giving electric connection by the decrement method.Specifically, at first, adopt organic solvent ultrasonic washings such as acetone or benzinum to give electric connection, remove cutting oil and cutting swarf thus.Then, after the drying, measure quality to electric connection (quality before using) with the unit of 0.1mg with electronic balance.Then, will be installed on the automatic welding machine, carry out 1 hour continuous welding to electric connection.Because blanket gas can the butt joint wear extent have some influences, therefore, in whole welding, making blanket gas is CO
2(100 volume %).In addition, welding is φ 1.2mm with the diameter of solid welding wire as mentioned above, and as for other welding conditions, welding current is 300A, and weldingvoltage is 38V, and speed of welding is the 20cm/ branch, and outstanding length is 25mm, and the welding posture is downward.After such continuous welding, remove and be attached to splashing and dirt on the electric connection, re-use organic solvent and carry out ultrasonic washing, after the drying, use electronic balance, measure quality (quality after the use) with the unit of 0.1mg to electric connection.Then, deduct the quality after the use the quality before use, thereby calculate per 1 hour wear extent of giving electric connection with the unit of 0.1mg.
Various welding by the preparation of these methods with the composition of solid welding wires as shown in Table 1 and Table 2, every 100mm
2The MoS on the amount (mg) of the oxidation scale of welding wire, surface
2, WS
2Or the oil quantity (g) of quantity of graphite, every 10kg welding wire and the wear extent (mg/ hour) of giving electric connection are shown in table 3 and table 4.In addition, the residual quantity of oxidation scale is with getting 5 determined materials the solid welding wire at random, with their numerical value of residual quantity equalization from the welding of an embodiment and comparative example.
Table 1
| No. | The chemical composition of solid welding wire (quality %) | |||||
| C | Si | Mn | Mo | Ti+Zr | ||
| Embodiment | 1 | 0.06 | 0.7 | 1.3 | - | 0.24 |
| 2 | 0.06 | 0.8 | 1.3 | - | 0.26 | |
| 3 | 0.03 | 0.4 | 1.5 | - | 0.29 | |
| 4 | 0.05 | 0.8 | 1.9 | - | 0.24 | |
| 5 | 0.08 | 0.8 | 1.7 | - | 0.28 | |
| 6 | 0.04 | 0.6 | 1.4 | - | 0.15 | |
| 7 | 0.05 | 0.7 | 1.5 | - | 0.21 | |
| 8 | 0.05 | 0.9 | 1.6 | - | - | |
| 9 | 0.08 | 1 | 1.5 | - | - | |
| 10 | 0.06 | 0.84 | 1.5 | - | 0.17 | |
| 11 | 0.05 | 0.8 | 1.8 | - | - | |
| 12 | 0.04 | 0.9 | 1.9 | 0.25 | - | |
| 13 | 0.05 | 0.8 | 1.7 | - | 0.14 | |
| 14 | 0.01 | 0.85 | 2 | 0.3 | 0.3 | |
| 15 | 0.04 | 0.5 | 0.8 | 0.5 | 0.28 | |
| 16 | 0.05 | 0.02 | 0.9 | 0.5 | 0.1 | |
| 17 | 0.04 | 0.05 | 0.5 | 0.4 | 0.05 | |
Table 2
| No. | The chemical composition of solid welding wire (quality %) | |||||
| C | Si | Mn | Mo | Ti+Zr | ||
| Comparative example | 18 | 0.05 | 0.7 | 1.3 | - | 0.22 |
| 19 | 0.05 | 1 | 1.6 | - | 0.2 | |
| 20 | 0.07 | 1.1 | 1.4 | - | 0.23 | |
| 21 | 0.08 | 0.5 | 1.4 | - | 0.18 | |
| 22 | 0.06 | 0.9 | 1.5 | - | 0.26 | |
| 23 | 0.08 | 0.7 | 1.2 | - | - | |
| 24 | 0.09 | 0.7 | 1.9 | - | 0.18 | |
| 25 | 0.06 | 0.8 | 1.9 | - | 0.05 | |
| 26 | 0.08 | 0.5 | 1.8 | 0.07 | 0.13 | |
| 27 | 0.11 | 0.9 | 1 | 0.05 | 0.09 | |
Table 3
| No. | Oxidation scale amount (mg/100mm 2) | The MoS of welding wire surface 2、WS 2, graphite | Oil mass (g/10kg) | Give the abrasion amount (mg/ hour) of electric connection | ||
| Kind | Amount (g/10kg) | |||||
| Embodiment | 1 | 0.0080 | MoS 2 | 0.15 | Trace | 7.2 |
| 2 | 0.0050 | MoS 2+WS 2 | 0.2 | Trace | 8.5 | |
| 3 | 0.0020 | WS 2+ graphite | 0.03 | Trace | 7.0 | |
| 4 | 0.0080 | WS 2 | 0.01 | Trace | 8.2 | |
| 5 | 0.010 | MoS 2+WS 2+ graphite | 0.5 | 0.8 | 2.2 | |
| 6 | 0.02 | MoS 2 | 1.5 | 0.2 | 3.0 | |
| 7 | 0.21 | Graphite | 1.9 | 1.9 | 2.5 | |
| 8 | 0.010 | MoS 2+ graphite | 0.8 | 0.8 | 3.4 | |
| 9 | 0.010 | MoS 2+ WS 2 | 0.2 | 0.6 | 3.9 | |
| 10 | 0.30 | Graphite | 0.8 | 1.5 | 4.5 | |
| 11 | 0.16 | WS 2+ graphite | 0.1 | 1.8 | 4.3 | |
| 12 | 0.14 | WS 2 | 0.2 | 0.5 | 4.2 | |
| 13 | 0.016 | MoS 2+WS 2+ graphite | 0.5 | 0.6 | 2.9 | |
| 14 | 0.14 | MoS 2 | 0.15 | 1.6 | 1.9 | |
| 15 | 0.24 | MoS 2+WS 2 | 0.9 | 1.1 | 3.2 | |
| 16 | 0.26 | MoS 2 | 0.2 | 1.5 | 1.1 | |
| 17 | 0.29 | MoS 2 | 0.1 | 0.5 | 2.2 | |
Table 4
| No. | Oxidation scale amount (mg/100mm 2) | The MoS of welding wire surface 2、WS 2, graphite | Oil mass (g/10kg) | Give the abrasion amount (mg/ hour) of electric connection | ||
| Kind | Amount (g/10kg) | |||||
| Comparative example | 18 | 0.0015 | MoS 2 | 0.05 | 0.5 | 61 |
| 19 | 0.0019 | Do not have | 0 | 0.6 | 55 | |
| 20 | Trace | WS 2 | 0.15 | 1.2 | 51 | |
| 21 | Trace | Do not have | 0 | 0.3 | 39 | |
| 22 | 0.001 | MoS 2 | 0.3 | 2.5 | 25 | |
| 23 | 0.4 | Do not have | 0 | 1.5 | 80 | |
| 24 | 0.5 | MoS 2+WS 2 | 0.5 | 1.7 | 29 | |
| 25 | 0.008 | MoS 2 | 0.008 | 0.2 | 45 | |
| 26 | 0.01 | Do not have | 0 | Trace | 35 | |
| 27 | 0.1 | WS 2 | 0.008 | 0.1 | 71 | |
Shown in above-mentioned table 3 and table 4, in No.17,, therefore, give the wear extent of electric connection minimum owing to formed an amount of oxidation scale from the teeth outwards at embodiment No.1.
On the other hand, in No.21,, increase for the wear extent of electric connection at comparative example No.18 because therefore the lower limit of the quantity not sufficient scope of the invention of oxidation scale, can not form enough overlay films at the contact of giving electric connection.In addition, in No.27, because the amount of oxidation scale has surpassed the upper limit of the scope of the invention, so welding wire and raise for the resistance that electrically contacts between the electric connection, the wearing and tearing of electric connection have been aggravated to give at comparative example No.23.
As mentioned above, according to the present invention, owing to formed an amount of oxidation scale from the teeth outwards, thereby when giving the contact of electric connection, the fusion of oxidation scale is solidified at the contact to electric connection, therefore, cover for the oxidized iron overlay film of contact of electric connection, can suppress its wearing and tearing.Therefore, needn't impose the copper plating, prevent the consumption of acid solution, alkaline solution and washings etc. essential in the copper plating, can reduce load environment.
Claims (6)
1. a welding solid welding wire is characterized in that every 100mm
2Welding wire surface forms 0.002 to 0.3mg oxidation scale, and on welding wire surface, applying particle diameter with the amount of every 10kg welding wire 0.01～2g is the MoS that is selected from of 0.1～10 μ m
2, WS
2More than one material with in the graphite does not impose plating.
2. as the welding solid welding wire of claim 1 record, it is characterized in that the amount with every 10kg welding wire 0.2～2.0g applies at least a oil that is selected from vegetable oil, animal oil, mineral oil and the artificial oil from the teeth outwards.
3. as the welding solid welding wire of claim 1 or 2 records, it is characterized in that, contain C:0.01～0.12 quality %, Si:0.2～1.2 quality %, Mn:0.5～2.5 quality %, P:0.001～0.03 quality % and S:0.001～0.03 quality %.
4. as the welding solid welding wire of claim 3 record, it is characterized in that, also contain the Ti and the Zr that add up to 0.03 to 0.30 quality %.
5. as the welding solid welding wire of claim 3 record, it is characterized in that, also contain Mo 0.01 to 0.60 quality %.
6. as the welding solid welding wire of claim 4 record, it is characterized in that, also contain Mo 0.01 to 0.60 quality %.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001152015 | 2001-05-22 | ||
| JP2001-152015 | 2001-05-22 | ||
| JP2001152015 | 2001-05-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1386610A CN1386610A (en) | 2002-12-25 |
| CN1199762C true CN1199762C (en) | 2005-05-04 |
Family
ID=18996752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021203237A Expired - Lifetime CN1199762C (en) | 2001-05-22 | 2002-05-22 | Solid wire for welding |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100502039B1 (en) |
| CN (1) | CN1199762C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339179C (en) * | 2005-06-30 | 2007-09-26 | 山西威尔德工业有限责任公司 | CO2 gas-shielded solid-core welding wire coateds graphite coating on its surface and its manufacturing method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100626415B1 (en) | 2004-12-03 | 2006-09-20 | 고려용접봉 주식회사 | Plating-less wire for gas-shielded arc welding |
| KR100593729B1 (en) | 2004-12-03 | 2006-07-03 | 고려용접봉 주식회사 | Plating-less wire for gas-shielded arc welding |
| WO2006104248A1 (en) * | 2005-03-29 | 2006-10-05 | Nippon Steel Corporation | Metallic flux cored wire, welding process with the same, and process for production of welded joints having high fatigue strength with little slag |
| KR100673544B1 (en) | 2005-08-22 | 2007-01-24 | 고려용접봉 주식회사 | Plating-less wire for gas-shielded arc welding |
| CN101745749B (en) * | 2008-12-19 | 2011-08-31 | 中冶焊接科技有限公司 | Coating welding wire and preparation method thereof |
| JP2012011461A (en) * | 2010-05-31 | 2012-01-19 | Kobe Steel Ltd | Copper-plated solid wire for welding |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3153040B2 (en) * | 1993-04-01 | 2001-04-03 | 日鐵溶接工業株式会社 | Gas shielded arc welding wire |
-
2002
- 2002-05-22 CN CNB021203237A patent/CN1199762C/en not_active Expired - Lifetime
- 2002-05-22 KR KR10-2002-0028404A patent/KR100502039B1/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339179C (en) * | 2005-06-30 | 2007-09-26 | 山西威尔德工业有限责任公司 | CO2 gas-shielded solid-core welding wire coateds graphite coating on its surface and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100502039B1 (en) | 2005-07-25 |
| CN1386610A (en) | 2002-12-25 |
| KR20020089200A (en) | 2002-11-29 |
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