CN216177516U - Gaseous two-sided protection device during stainless steel welding - Google Patents
Gaseous two-sided protection device during stainless steel welding Download PDFInfo
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- CN216177516U CN216177516U CN202122403615.7U CN202122403615U CN216177516U CN 216177516 U CN216177516 U CN 216177516U CN 202122403615 U CN202122403615 U CN 202122403615U CN 216177516 U CN216177516 U CN 216177516U
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Abstract
The utility model belongs to the technical field of welding protection, and discloses a gas double-side protection device for stainless steel welding, which comprises a tube body, wherein a pressing welding center is arranged at the right end of the top of the tube body, an inner burr cutter bar is placed in the middle of the inside of the tube body, and a mixed gas spraying device on the inner wall of a stainless steel tube and a mixed gas nozzle on the outer wall of the stainless steel tube are respectively arranged at the upper end of the inside of the inner burr cutter bar and the middle of the top of the tube body. The device achieves the purpose of good welding protection effect by the matching work of the structures such as the delay relay, the mixed gas spraying device on the inner wall of the stainless steel pipe, the mixed gas nozzle on the outer wall of the stainless steel pipe and the like, and the application is tested, and the welding effect is proved to be ideal by observing the color of a welding seam; by adopting the scheme, the welding speed of the unit can be increased by 35% under the condition that the output power is not changed, namely, the production efficiency is increased by 35%, and the win-win situation of the quality of the welding line and the quality of the product is achieved.
Description
Technical Field
The utility model belongs to the technical field of welding protection, and particularly relates to a gas double-side protection device for stainless steel welding.
Background
The relatively common RN120 phi 114 welded pipe forming unit produced by Menneismann company in Germany on the market is equipment for producing steel pipes for automobile transmission shafts, the outer diameter range of the produced steel pipes is phi 33-phi 114mm, and the equipment emphasizes production of steel pipes for shafts and conveying carrier roller pipes, so that the equipment is not suitable for production of stainless steel pipes needing gas shielded welding; in the initial stage of trial production of the stainless steel pipe, according to the experience of producing the shaft tube in the past, gas shielded welding is not implemented, and the result shows that the welding quality is quite unstable, and the cracking phenomenon frequently occurs in a product flattening test and a tensile test.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems, and provides a gas double-side protection device for stainless steel welding, which has the advantages of comprehensive protection of a welding area, good weld joint forming and easiness in obtaining high-quality welding quality.
In order to achieve the purpose, the utility model provides the following technical scheme: a gas double-side protection device for stainless steel welding comprises a tube body, wherein a pressing welding center is arranged at the right end of the top of the tube body, an inner burr cutter bar is arranged in the middle of the inside of the tube body, a stainless steel tube inner wall mixed gas spraying device and a stainless steel tube outer wall mixed gas nozzle are respectively arranged at the upper end of the inside of the inner burr cutter bar and the middle of the top of the tube body, the stainless steel tube outer wall mixed gas nozzle is communicated with the stainless steel tube inner wall mixed gas spraying device through a pipeline, a high-frequency induction coil is arranged at the left end of the periphery of the tube body, a gas splitter and an adjustable throttle valve are respectively and fixedly arranged in the middle of a pipeline connecting the stainless steel tube inner wall mixed gas spraying device and the stainless steel tube outer wall mixed gas nozzle and at the two ends of the middle of the pipeline, a high-precision gas flowmeter is fixedly arranged in a pipeline area above the gas splitter, and a solenoid valve is fixedly arranged in a pipeline area on the left side of the high-precision gas flowmeter, one end of the electromagnetic valve is electrically connected with a time delay relay.
According to a preferred technical scheme of the utility model, two ends of the gas splitter respectively correspond to a mixed gas nozzle on the outer wall of the stainless steel pipe and a mixed gas spraying device on the inner wall of the stainless steel pipe through pipelines, the area value of an exhaust port of the mixed gas nozzle on the outer wall of the stainless steel pipe is larger than that of the mixed gas spraying device on the inner wall of the stainless steel pipe, the exhaust ports of the mixed gas nozzle on the outer wall of the stainless steel pipe correspond to the inner wall and the outer wall of the pipe body in the same side structure, the mixed gas spraying device on the inner wall of the stainless steel pipe and the mixed gas nozzle on the outer wall of the stainless steel pipe are arranged, the nozzle areas of the mixed gas spraying device and the nozzle areas of the mixed gas spraying device on the outer wall of the stainless steel pipe are close to the inner wall and the outer wall of one end of the pipe body, the pipe body can be effectively protected along with the injection of protective gas, the whole working efficiency is high in the follow-up welding process, and the quality of the welding process is better.
According to the preferred technical scheme, the protective gas is discharged by the mixed gas spraying device on the outer wall of the stainless steel pipe and the mixed gas spraying device on the inner wall of the stainless steel pipe, the protective gas is specifically mixed gas of 95% argon and 5% carbon dioxide, the argon is used as good protective gas, and the protective gas is widely applied to industrial production.
According to a preferred technical scheme, the mixed gas ejection device for the inner wall of the stainless steel pipe comprises two pipelines and a spray head, the number of the mixed gas ejection devices for the inner wall of the stainless steel pipe is two, the pipelines of the mixed gas ejection devices for the inner wall of the two stainless steel pipes are both of an L-shaped copper pipe structure, the smaller bending end of the copper pipe breaks through the inner wall of the inner burr cutter bar to be in contact with the environment of the inner wall of the pipe body, and the bent copper pipe structure is designed, so that on one hand, the conveying of protective gas can be better concentrated, and meanwhile, the collision influence, which is possibly caused by the whole inner burr cutter bar in the moving process, on the mixed gas ejection device for the inner wall of the stainless steel pipe can be avoided.
Compared with the prior art, the utility model has the following beneficial effects:
1. the purpose of good welding protection effect is achieved by the aid of the matched work of the structures such as the delay relay, the mixed gas spraying device on the inner wall of the stainless steel pipe, the mixed gas nozzle on the outer wall of the stainless steel pipe and the like, tests prove that the mixed gas of 95% argon (with the purity of 99.99%) and 5% carbon dioxide is selected as a protective gas source for high-frequency welding of the stainless steel, and device hardware controls the supply and the closing of the gas source through a two-position two-way electromagnetic valve; the gas mass flowmeter realizes the stable supply and flow setting of the mixed gas; the device mainly realizes the oxygen-free protection of the double-sided welding area of the steel pipe in a high-frequency welding state, so that the potential of a high-frequency current skin effect is fully exerted, the welding current loss is small, the welding speed is high, and the welding quality is improved; the color of the welding line is white and golden yellow when observed, and the welding effect can be proved to be ideal; by adopting the scheme, the welding speed of the unit can be increased by 35% under the condition that the output power is not changed, namely, the production efficiency is increased by 35%, and the win-win situation of the quality of the welding line and the quality of the product is achieved.
Drawings
FIG. 1 is a schematic diagram of the structural work flow of the present invention.
In the figure: 1. a time delay relay; 2. an electromagnetic valve; 3. a high precision gas flow meter; 4. a gas splitter; 5. an adjustable throttle valve; 6. a high-frequency induction coil; 7. a mixed gas spraying device on the inner wall of the stainless steel pipe; 8. A mixed gas nozzle on the outer wall of the stainless steel pipe; 9. pressing the welding center; 10. an inner burr cutter bar; 11. a tube body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the utility model provides a gas double-side protection device for stainless steel welding, which comprises a tube body 11, wherein the right end of the top of the tube body 11 is provided with a press welding center 9, the middle part inside the tube body 11 is provided with an inner burr cutter bar 10, the upper end inside the inner burr cutter bar 10 and the middle part of the top of the tube body 11 are respectively provided with a stainless steel tube inner wall mixed gas ejection device 7 and a stainless steel tube outer wall mixed gas nozzle 8, the stainless steel tube outer wall mixed gas nozzle 8 is communicated with the stainless steel tube inner wall mixed gas ejection device 7 through a pipeline, the left end of the periphery of the tube body 11 is provided with a high-frequency induction coil 6, the middle part and two ends of the pipeline connecting the stainless steel tube inner wall mixed gas ejection device 7 and the stainless steel tube outer wall mixed gas nozzle 8 are respectively and fixedly provided with a gas splitter 4 and an adjustable throttle 5, and a high-precision gas flowmeter 3 is fixedly arranged in a pipeline area above the gas splitter 4, the left pipeline region of the high-precision gas flowmeter 3 is fixedly provided with an electromagnetic valve 2, and one end of the electromagnetic valve 2 is electrically connected with a time delay relay 1.
Wherein, the both ends of gas shunt 4 correspond nonrust steel pipe outer wall mist nozzle 8 and nonrust steel pipe inner wall mist eduction gear 7 respectively through the pipeline, the area value of nonrust steel pipe outer wall mist eduction gear 8 gas vent is greater than the area value of nonrust steel pipe inner wall mist eduction gear 7 gas vent and the two gas vent corresponds be the body 11 with the inside and outside wall of one side structure, through being provided with nonrust steel pipe inner wall mist eduction gear 7 and nonrust steel pipe outer wall mist nozzle 8 structure and the two shower nozzle region all is close to with the inside and outside wall of body 11 one end, along with the injection of protective gas, this part body 11 can be got up by effectual protection, follow-up whole work efficiency is high in the welded time, and welding process's quality is also better.
Wherein, what nonrust steel pipe outer wall mist nozzle 8 and nonrust steel pipe inner wall mist eduction gear 7 row sent is protective gas, and this protective gas specifically is the mist of 95% argon gas + 5% carbon dioxide, and the argon gas is as good protective gas, and extensive application is in industrial production, and this application passes through the air part of argon gas as the protection, can guarantee that follow-up welding work welding current loss is little, and welding speed is fast, has improved welding quality.
Wherein, nonrust steel pipe inner wall mist jetter 7 comprises pipeline and shower nozzle two parts, nonrust steel pipe inner wall mist jetter 7's quantity is two, and two nonrust steel pipe inner wall mist jetter 7's pipeline is L shape copper tubular construction, the less end of buckling of this copper pipe breaks through the inner wall and the 11 inner wall environment of body of interior burr cutter arbor 10 and contacts, the copper tubular construction of bending type is designed into, the transport of the concentrated protective gas that can be better on the one hand, also can avoid whole interior burr cutter arbor 10 to probably influence the collision that nonrust steel pipe inner wall mist jetter 7 caused at the removal in-process simultaneously.
The working principle and the using process of the utility model are as follows:
in order to realize the protection of the two sides of the steel pipe body 11 during welding, the device adopts the electromagnetic valve 2 and the host machine to start up linkage control, and realizes the welding after ventilation at the start up by using the hysteresis effect of high-frequency current; when the machine is stopped, the purpose of stopping heating and then closing the gas can be realized by using the time delay relay 1, and the product yield is improved; the high-precision gas flowmeter 3 is used for realizing accurate and stable flow supply to the protective gas, thereby ensuring the flow and saving energy; in order to realize gas protection on the inner wall of the tube body 11, the inner burr cutter bar 10 is processed and grooved, and 2 copper tubes with the thickness of 6mm are embedded, so that gas can penetrate into a region to be protected, inner weld molten drops are refined, and inner weld penetration is changed; in a word, the device realizes the double-sided gas protection of the inner wall and the outer wall for the first time in the continuous welding production line of the stainless steel pipe, not only ensures the mechanical property and the corrosion resistance of a welding seam, but also reduces the high-frequency welding spatter, improves the welding depth, concentrates high-frequency heat, and realizes good effects of good welding seam forming, stable welding and high production efficiency.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a gaseous two-sided protection device during stainless steel welding, includes body (11), its characterized in that: the pressure welding center (9) is arranged at the right end of the top of the pipe body (11), the inner burr cutter bar (10) is placed at the middle of the inside of the pipe body (11), the upper end of the inside of the inner burr cutter bar (10) and the middle of the top of the pipe body (11) are respectively provided with a stainless steel pipe inner wall mixed gas spraying device (7) and a stainless steel pipe outer wall mixed gas spraying nozzle (8), the stainless steel pipe outer wall mixed gas spraying device (8) is communicated with the stainless steel pipe inner wall mixed gas spraying device (7) through a pipeline, the left end of the periphery of the pipe body (11) is provided with a high-frequency induction coil (6), the middle of a pipeline connecting the stainless steel pipe inner wall mixed gas spraying device (7) and the stainless steel pipe outer wall mixed gas spraying nozzle (8) and two ends of the pipeline are respectively and fixedly provided with a gas splitter (4) and an adjustable throttle valve (5), and a high-precision gas flowmeter (3) is fixedly installed in a pipeline area above the gas splitter (4), the left pipeline region fixed mounting of high accuracy gas flowmeter (3) has solenoid valve (2), the one end electric connection of solenoid valve (2) has time delay relay (1).
2. The gas double-sided protection device for stainless steel welding according to claim 1, characterized in that: the both ends of gas shunt (4) are passed through the pipeline and are corresponded nonrust steel pipe outer wall mist nozzle (8) and nonrust steel pipe inner wall mist eduction gear (7) respectively, the area value that nonrust steel pipe outer wall mist nozzle (8) gas vent is greater than the area value of nonrust steel pipe inner wall mist eduction gear (7) gas vent and the two gas vent corresponds be body (11) with the inside and outside wall of one side structure.
3. The gas double-sided protection device for stainless steel welding according to claim 1, characterized in that: the mixed gas nozzle (8) on the outer wall of the stainless steel pipe and the mixed gas spraying device (7) on the inner wall of the stainless steel pipe discharge protective gas, and the protective gas is specifically mixed gas of 95% argon and 5% carbon dioxide.
4. The gas double-sided protection device for stainless steel welding according to claim 1, characterized in that: nonrust steel pipe inner wall mist ejecting device (7) comprise pipeline and shower nozzle two parts, the quantity of nonrust steel pipe inner wall mist ejecting device (7) is two, and two nonrust steel pipe inner wall mist ejecting device's (7) pipeline is L shape copper tubular construction, should the less bending end of copper pipe breaks through the inner wall and the body (11) inner wall environment contact of interior burr cutter arbor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122403615.7U CN216177516U (en) | 2021-09-30 | 2021-09-30 | Gaseous two-sided protection device during stainless steel welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122403615.7U CN216177516U (en) | 2021-09-30 | 2021-09-30 | Gaseous two-sided protection device during stainless steel welding |
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| Publication Number | Publication Date |
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| CN216177516U true CN216177516U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122403615.7U Active CN216177516U (en) | 2021-09-30 | 2021-09-30 | Gaseous two-sided protection device during stainless steel welding |
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| CN (1) | CN216177516U (en) |
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2021
- 2021-09-30 CN CN202122403615.7U patent/CN216177516U/en active Active
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