CN1037590C - Nozzle of arc welding or cutting - Google Patents
Nozzle of arc welding or cutting Download PDFInfo
- Publication number
- CN1037590C CN1037590C CN 94115152 CN94115152A CN1037590C CN 1037590 C CN1037590 C CN 1037590C CN 94115152 CN94115152 CN 94115152 CN 94115152 A CN94115152 A CN 94115152A CN 1037590 C CN1037590 C CN 1037590C
- Authority
- CN
- China
- Prior art keywords
- spray pipe
- gas spray
- electric arc
- described electric
- cutting burner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/323—Combined coupling means, e.g. gas, electricity, water or the like
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Gas Burners (AREA)
Abstract
An arc welding or cutting torch with a gas nozzle which can be mounted on a holder arranged on the torch neck. In order to obtain good heat transfer from the gas nozzle to the gas-nozzle holder upon simple exchange of the gas nozzle and with reliable retention at the gas-nozzle seat, the gas-nozzle holder has an insertion groove for inserting the gas nozzle, the gas nozzle, at least in its area which is inserted into the insertion groove, being made of a material having a higher coefficient of thermal expansion gamma than that of the material of the gas-nozzle holder.
Description
The present invention relates to an electric arc tip or cutting burner, this electric arc tip or cutting burner have a gas spray pipe on the accommodating member of can planting, and this accommodating member is placed on the tip neck.
Under electric arc tip or cutting burner situation, this gas spray pipe both can be screwedly mounted on one on the gas spray pipe seat of also can planting by a clamping and fixing device on the gas spray pipe accommodating member that is provided with on the tip neck and fix.The shortcoming that is screwed gas spray pipe with screw thread is, the heat transmission just by take place at the screw connection structure on the gas spray pipe accommodating member and pass on the tip neck therefrom.But an inadequate heat transmission causes the wearing and tearing, particularly gas spray pipe of a raising and the loss of accommodating member threaded portion.Under the situation that gas spray pipe is fixedly clamped, can produce higher mechanical loss by gas spray pipe frequent plug-in mounting and dismounting, therefore in the passing of time, just no longer guarantee uniform contact action between gas spray pipe and nozzle block, and then cause an inadequate heat conduction.Nozzle block mostly is the structure of taper a little greatly under the situation that gas spray pipe can be planted for this reason, has reduced so that be used for the contact surface of heat transmission.Also have, in the helicitic texture that is threaded or on the gas spray pipe seat, can produce more serious dirt deposition.
Task of the present invention for this reason is, under the situation of electric arc tip that starts described type or cutting burner, so the gas spray pipe seat is done remodeling setting, promptly be fixed on reliably under the situation on the gas spray pipe seat, realize a good heat transfer process from gas spray pipe to the gas spray pipe accommodating member at easy replacing gas spray pipe with it.
This task is to solve by such scheme, be the insertion slot that the gas spray pipe accommodating member has the gas spray pipe that is used to plant, and this gas spray pipe at least the part in it plants insertion slot be to make by a kind of its thermal coefficient of expansion γ material higher than the material coefficient of thermal expansion coefficient of gas spray pipe accommodating member.
As the material that is used for gas spray pipe, can consider copper or copper alloy according to the present invention, simultaneously, the gas spray pipe accommodating member can by iron, steel for example automatic machine tool make with steel or also available brass.
Stipulate that in a flexible program of the present invention this gas spray pipe accommodating member is arranged to member separately, and can be inserted on the tip neck with coupled.This gas spray pipe seat has a bigger surface of being arranged to tubulose tip neck in this heat conducting key area, therefore by radiation and conduction, under air cooled tip situation, form the heat transmission of an improvement and avoid undesirable conduction of heat especially towards handle orientations.
According to the present invention, gas spray pipe accommodating member organization plan as the member that separates, also disclosed such possibility, promptly by select the material of gas spray pipe accommodating member and tip neck according to its thermal conductivity, just can make conduction of heat optimization and avoid the conduction of the past tip handle of undesirable heat again.According to the invention requirement, special the gas spray pipe accommodating member is made by brass under the tip situation of liquid cools, and in contrast, this tip neck is but generally made by steel or iron pipe.Just can realize the heat transmission of an orientation thus, promptly from the gas spray pipe to the outer shroud again to the gas spray pipe accommodating member with receiving cooling water therefrom.Under air cooled tip situation, can be advantageously, this gas spray pipe accommodating member be arranged to iron or for example automatic machine tool with steel.According to this, heat just remains in the scope of gas spray pipe accommodating member, and the while heat can not passed bat-handle switch excessively back and go.Under air cooled tip situation, heat just should keep concentrating in the zone of gas spray pipe accommodating member like this, so that heat is passed to ambient air by radiation and conduction especially.
In order to improve heat transfer process, be that the gas spray pipe accommodating member is provided with cooling ribs in its end away from gas spray pipe according to measure of the present invention equally.
According to special design regulation of the present invention, the radial outer wall of this insertion slot is to be made of a ring that is connected with the gas spray pipe accommodating member.This insertion slot just can very simple mode be made thus, and simultaneously, ring is connected with the gas spray pipe accommodating member of settling on the tip neck, just can for example finish by extruding and/or by welding.
Also have, the possibility that provides in principle as the ring organization plan of split member is, the material of the ring by selecting gas spray pipe accommodating member and outside according to its thermal conductivity just also can improve heat transfer process.For example, under the tip situation of a liquid cools, heat should as far as possible directly pass to the cooling liquid of leading in the tip neck, and like this, this ring can be formed from steel, and the gas spray pipe accommodating member can be made by brass.
And according to the present invention, this tip neck is to be made by the material with identical or different thermal conductivity λ with the ring of outside with accommodating member in case of necessity.
According to another organization plan regulation of the present invention, be provided with one on the gas spray pipe accommodating member by putting the flexible member on the gas spray pipe inwall, for example a polygon spring.Thus, when planting, can realize gas spray pipe a tolerance compensating between gas spray pipe and gas nozzle block on the one hand; On the other hand, this flexible member also can make gas spray pipe at cold state be implemented in centering effect in the insertion slot.
For making heat realize promptly transmitting to accommodating body from the leading section of gas spray pipe, at last according to the present invention's regulation, relative its end facing to accommodating member has a small wall thickness to gas spray pipe in its end in front.The reducing and for example to realize of this wall thickness by a rounding mode at the leading section of gas spray pipe.
When tip moved, gas spray pipe was because its material has higher thermal coefficient of expansion, so than the insertion slot of gas spray pipe accommodating member expansion is more consumingly arranged.Therefore, gas spray pipe produces contact stress with the radially wall of outside of insertion slot on its whole excircle.Can realize gas spray pipe safe and reliable fixing in insertion slot thus.But at first guarantee a desirable heat conduction, that is from the gas spray pipe of strong load to the gas spray pipe seat, with under the air cooled tip situation from there to ambient air and tip situation in liquid cools under, from there to the heat conduction that operates in the cooling liquid in the tip neck.By the conduction of this heat faster, prolonged the service life of gas spray pipe significantly.Because the less temperature loading of gas spray pipe also makes tip stick on the gas spray pipe to degree unlike existing tip.Because gas spray pipe is radially outward expanded when tip is worked, so and the thermo-contact of the inner radial wall of gas spray pipe accommodating member or insertion slot just do not reach the degree such with the radial outer wall thermo-contact.Just avoided of the conduction of a undesirable heat thus towards the tip handle orientations.Because conduction of very fast heat and the relevant therewith contact stress between gas spray pipe and insertion slot radial outer wall when tip is closed can reduce soon, and gas spray pipe is extracted out from insertion slot easily.
Other target, advantage, feature and the application possibility of the present invention can be from following by obtaining the explanation of accompanying drawing to an embodiment.Simultaneously, feature itself all descriptions and/or that accompanying drawing is described or any significant combination all constitute technical theme of the present invention, and do not relate to them in the claims or the summary situation in its dependence.
Fig. 1 is the cutaway view of the part of electric arc tip of the present invention or the burner neck that cuts burner.
In Fig. 1, the part having described an electric arc tip or cut the burner neck 1 of burner is configured to air cooled metal-inert gas-tip (MIG-welds (burning) mouth) or metal-active gases-tip (MAG-welds (burning) mouth) among the embodiment that this tip is selected herein.This tip neck 1 has an interior pipe 13 of being made by copper or brass, and it has a through hole 14 that is used to carry protective gas and carries welding rod.Should be surrounded by an isolated tube 15 that for example is made of polytetrafluoroethylene (PTFE) by interior pipe 13, this pipe 15 itself is surrounded by the protection tube 16 of the iron of an outside or steel again.Settle a shading ring that is made of plastics 17 jet pipe stem 18 of packing into by the centre in the end, front of interior pipe 13, it has the transverse holes 19 that is used for distribution of gas.In jet pipe stem 18, can be screwed into an air current spray nozzle 12.Settle a tip-guard member 6 between the flange of this external shading ring 17 and jet pipe stem 18.
The gas spray pipe accommodating member 2 of pushing to a sleeve shaped at the leading section that burns (weldering) mouth neck 1 is used for fixing gas spray pipe 4 and welds together with tip pipe 1.An insertion slot 3 is set on accommodating member 2 is used for plug-in mounting gas spray pipe 4, the radial outer wall of insertion slot 3 is made of ring 5, and this ring 5 is fixing or by being weldingly fixed on the gas spray pipe accommodating member 2 in wedge.
This gas spray pipe 4 is to be made by a kind of material with bigger thermal coefficient of expansion γ, and it is bigger than the material thermal expansion coefficient of gas spray pipe accommodating member 2.When burning the operation of (weldering) mouth, gas spray pipe 4 can therefore enlarge with on its whole excircle with radially outside inwall or the ring 5 generation stress of insertion slot 3 contact.Therefore realize the conduction of heat of a desirable gas spray pipe 4.
For example can consider copper or copper alloy as the material that is used for gas spray pipe 4, simultaneously, selected herein is that an air cooled MIG-/MAG-burns under the situation of (weldering) mouth embodiment, and gas spray pipe accommodating member 2 can be by iron or steel with the ring 5 of outside, and for example automatic machine tool is made of a steel.According to this, the heat in ccontaining 2 scopes just is held, and does not go thereby heat is back in the handle (not shown) of burning (weldering) mouth excessively.This heat concentrating in accommodating body 2 scopes is very important under air cooled burner situation but, because heat just sends in the surrounding air by radiation and convection action.In order to improve heat conduction, at gas spray pipe accommodating body 2 away from the additional cooling ribs 7 that is provided with in the end of gas spray pipe 4.
On the sleeve shaped extension 9 that accommodating body 2 extends towards the direction of gas jet pipe 4, and in annular groove 8, settle a spring element of under this selected embodiment situation, making polygon spring 10.Thus, under the situation of gas spray pipe 4 plug-in mountings, between gas spray pipe 4 and gas nozzle block, realize a tolerance compensating on the one hand.This spring element 10 can make gas spray pipe 4 be implemented in centering effect in the insertion slot 3 when cold state on the other hand.
As from also can finding out the figure, this gas spray pipe 4 is equipped with a rounded feature on its end 11 in front.By the measure that this wall thickness that makes gas spray pipe 4 reduces, can realize equally heat can be quickly transmission from the leading section 11 of gas spray pipe 4 toward accommodating bodies 2.
Ref. No. 1 is burnt (weldering) mouth neck; burn (weldering) mouth pipe 2 gas spray pipe accommodating members; 56 tips of accommodating body 3 insertion slots, 4 gas spray pipes-guard member 7 cooling ribses 8 annular grooves 9 extensions 10 spring parts, the leading section 12 air current spray nozzles 13 inner tubes 14 through holes 15 isolated tubes 16 protection tubes 17 shading rings 18 nozzle stems 19 transverse holes γ thermal coefficient of expansion λ thermal conductivities of polygon spring 11 gas spray pipes
Claims (50)
1, electric arc tip or cutting burner have a gas spray pipe on the accommodating member of can planting, and this accommodating member is placed on the tip neck, it is characterized in that:
Gas spray pipe accommodating member (2) has one and is used to the insertion slot (3) of gas spray pipe (4) of planting, and this gas spray pipe (4) at least the part in its insertion slot of planting (3) be to want high material to make than the material coefficient of thermal expansion coefficient of gas spray pipe accommodating member (2) by a kind of its thermal coefficient of expansion γ.
2, by described electric arc tip of claim 1 or cutting burner, it is characterized in that:
Gas spray pipe (4) make by a copper or an Albatra metal-in its plant zone at least and/or gas spray pipe accommodating member (2) be by iron, steel for example automatic machine tool make with steel or by brass.
3, by described electric arc tip of claim 1 or cutting burner, it is characterized in that:
This gas spray pipe accommodating member (2) is arranged to member separately, and can be inserted to tip neck (1) and go up and can be connected with this mouth neck (1).
4, by one of claim 1 to 3 described electric arc tip or cutting burner, it is characterized in that:
The radially wall portion of outside of this insertion slot (3) is made of a ring (5) that can be connected with gas spray pipe accommodating member (2).
5, by one of claim 1 to 3 described electric arc tip or cutting burner, it is characterized in that:
The ring (5) of this gas spray pipe accommodating member (2) and outside is to be made by the material with identical or different thermal conductivity λ.
6, by described electric arc tip of claim 4 or cutting burner, it is characterized in that:
The ring (5) of this gas spray pipe accommodating member (2) and outside is to be made by the material with identical or different thermal conductivity λ.
7, by described electric arc tip of claim 5 or cutting burner, it is characterized in that:
The ring (5) of this accommodating member (2) and/or its outside by iron, steel for example automatic machine tool make with steel or brass.
8, by described electric arc tip of claim 6 or cutting burner, it is characterized in that:
The ring (5) of this accommodating member (2) and/or its outside by iron, steel for example automatic machine tool make with steel or brass.
9, by one of claim 1 to 3 described electric arc tip or cutting burner, it is characterized in that:
This tip neck (1) and accommodating member (2) are to be made by the material with identical or different thermal conductivity λ with the ring (5) of outside in case of necessity.
10, by described electric arc tip of claim 4 or cutting burner, it is characterized in that:
This tip neck (1) and accommodating member (2) are to be made by the material with identical or different thermal conductivity λ with the ring (5) of outside in case of necessity.
11, by described electric arc tip of claim 5 or cutting burner, it is characterized in that:
This tip neck (1) and accommodating member (2) are to be made by the material with identical or different thermal conductivity λ with the ring (5) of outside in case of necessity.
12, by described electric arc tip of claim 6 or cutting burner, it is characterized in that:
This tip neck (1) and accommodating member (2) are to be made by the material with identical or different thermal conductivity λ with the ring (5) of outside in case of necessity.
13, by described electric arc tip of claim 7 or cutting burner, it is characterized in that:
This tip neck (1) and accommodating member (2) are to be made by the material with identical or different thermal conductivity λ with the ring (5) of outside in case of necessity.
14, by described electric arc tip of claim 8 or cutting burner, it is characterized in that:
This tip neck (1) and accommodating member (2) are to be made by the material with identical or different thermal conductivity λ with the ring (5) of outside in case of necessity.
15, by one of claim 1 to 3 described electric arc tip or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
16, by described electric arc tip of claim 4 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
17, by described electric arc tip of front claim 5 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
18, by described electric arc tip of claim 6 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
19, by described electric arc tip of claim 7 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
20, by described electric arc tip of claim 8 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
21, by described electric arc tip of claim 9 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
22, by described electric arc tip of claim 10 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
23, by described electric arc tip of claim 11 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
24, by described electric arc tip of claim 12 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
25, by described electric arc tip of claim 13 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
26, by described electric arc tip of claim 14 or cutting burner, it is characterized in that:
Flexible member on the inwall that rests on gas spray pipe (4) is being set on the gas spray pipe accommodating member (2), and for example a polygon spring (10) is used for making gas spray pipe (4) to locate at insertion slot.
27, by one of claim 1 to 3 described electric arc tip or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
28, by described electric arc tip of claim 4 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
29, by described electric arc tip of claim 5 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
30, by described electric arc tip of claim 6 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
31, by described electric arc tip of claim 7 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
32, by described electric arc tip of claim 8 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
33, by described electric arc tip of claim 9 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
34, by described electric arc tip of claim 10 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
35, by described electric arc tip of claim 11 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
36, by described electric arc tip of claim 12 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
37, by described electric arc tip of claim 13 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
38, by described electric arc tip of claim 14 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
39, by described electric arc tip of claim 15 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
40, by described electric arc tip of claim 16 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
41, by described electric arc tip of claim 17 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
42, by described electric arc tip of claim 18 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
43, by described electric arc tip of claim 19 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
44, by described electric arc tip of claim 20 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
45, by described electric arc tip of claim 21 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
46, by described electric arc tip of claim 22 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
47, by described electric arc tip of claim 23 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
48, by described electric arc tip of claim 24 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
49, by described electric arc tip of claim 25 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
50, by described electric arc tip of claim 26 or cutting burner, it is characterized in that:
This gas spray pipe (4) has a small wall thickness at its free end.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4331093.1 | 1993-09-14 | ||
| DE4331093 | 1993-09-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1104949A CN1104949A (en) | 1995-07-12 |
| CN1037590C true CN1037590C (en) | 1998-03-04 |
Family
ID=6497629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94115152 Expired - Fee Related CN1037590C (en) | 1993-09-14 | 1994-09-13 | Nozzle of arc welding or cutting |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1037590C (en) |
| DE (1) | DE4432475C2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6359249B1 (en) | 1995-04-19 | 2002-03-19 | Dct, Inc. | No wat welding system |
| US6573470B1 (en) | 1998-08-05 | 2003-06-03 | Dct, Inc. | Weld gun heat removal |
| WO2000073011A1 (en) * | 1998-08-05 | 2000-12-07 | Dct Inc. | Welding system |
| AU1771601A (en) | 1999-11-19 | 2001-05-30 | Dct, Inc. | Multi-arm weld gun |
| US7253373B2 (en) * | 2003-07-24 | 2007-08-07 | Illinois Tool Works Inc. | Air-cooled arc welding implement |
| DE10341492B4 (en) * | 2003-09-09 | 2006-04-13 | Adam Opel Ag | Arc welding torch and method of repairing the arc welding torch |
| CN101664854B (en) * | 2009-09-24 | 2011-12-07 | 宁波明欣化工机械有限责任公司 | Welding tip holding device |
| EP2407267B1 (en) * | 2010-07-14 | 2014-01-01 | EWM Hightec Welding GmbH | Welding torch with a neck comprising an insulated conduit |
| DE102017007744A1 (en) | 2017-08-16 | 2019-02-21 | Bernd Wachtling | Device for changing a current nozzle of an arc welding torch |
| DE102017007745A1 (en) | 2017-08-16 | 2019-02-21 | Bernd Wachtling | Current nozzle of an arc welding torch |
| DE102017007746A1 (en) | 2017-08-16 | 2019-02-21 | Bernd Wachtling | Method for changing a current nozzle of an arc welding torch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2456478C2 (en) * | 1974-11-29 | 1983-07-28 | Alexander Binzel GmbH & Co KG, 6305 Buseck | Inert gas welding torch with a push-on gas nozzle |
| DE8914372U1 (en) * | 1989-12-06 | 1990-02-22 | Kao, Chung Chen, Tansui, Taipei | Carbon dioxide welding torch |
-
1994
- 1994-09-13 DE DE4432475A patent/DE4432475C2/en not_active Expired - Fee Related
- 1994-09-13 CN CN 94115152 patent/CN1037590C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE4432475C2 (en) | 2000-03-23 |
| CN1104949A (en) | 1995-07-12 |
| DE4432475A1 (en) | 1995-03-16 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |