CN105328297A - Welding protection method, application and device - Google Patents
Welding protection method, application and device Download PDFInfo
- Publication number
- CN105328297A CN105328297A CN201510884672.8A CN201510884672A CN105328297A CN 105328297 A CN105328297 A CN 105328297A CN 201510884672 A CN201510884672 A CN 201510884672A CN 105328297 A CN105328297 A CN 105328297A
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- Prior art keywords
- welding
- protective gas
- protection device
- pipe
- welding protection
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Classifications
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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
- B23K5/00—Gas flame welding
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/002—Soldering by means of induction heating
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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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- 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
- B23K5/00—Gas flame welding
- B23K5/22—Auxiliary equipment, e.g. backings, guides
-
- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K9/325—Devices for supplying or evacuating shielding gas
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/14—Heat exchangers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The invention provides a welding protection method, application and device. The welding protection method comprises the following steps: A, assembling the welding protection device on the outer sides of two to-be-welded metal pieces, and preheating the to-be-welded part between the two metal pieces; B, feeding solder to start welding; C, before finishing welding, starting the welding protection device to provide protective gas, and enabling the protective gas to surround the welding part between the two metal pieces; D, after finishing welding, continuing providing protective gas, and stopping providing the protective gas until the welding part cools. According to the welding protection method, the protective gas is fed before finishing welding and is continued to be fed after finishing welding, so that the situation that the metal pieces are not oxidized during the cooling process after finishing welding is ensured, and the problem that the surfaces of the metal pieces are oxidized and become black are avoided.
Description
Technical field
The present invention relates to welding technology field, particularly relate to a kind of welding protection method, application and device.
Background technology
In air-conditioning refrigeration system, usually the welding of metalwork can be related to, especially the welding between steelwork and steelwork or the welding between steelwork and copper fitting, and this welding adopts gas brazing mostly, gas brazing often causes the welding position surface oxidation of two weld metal pieces, wherein can turn black after steelwork surface oxidation, need to process through operations such as follow-up cleaning and polishings, this welding manner not only considerably increases welding cost, and cleaning process needs to use a large amount of chemicals, meeting serious environment pollution, and polishing process easily causes harmful effect to product appearance, thus the product quality after impact welding.For this reason, prior art leads to protective gas when soldering, and to alleviate the problem of surface oxidation, but existing protected mode is logical protective gas in metalwork mostly, its problem that metalwork outer surface still cannot be avoided to be oxidized.
Summary of the invention
The present invention in order to solve the problem of metalwork welding position surface oxidation after existing welding, provide a kind of can avoid metalwork welding position surface oxidation welding protection method, application and device.
In order to achieve the above object, the invention provides a kind of welding protection method, comprise the following steps:
A, outside to be welded two metalworks erection welding protective device, preheating is carried out to the position to be welded between two metalworks;
B, access solder, start welding;
Before C, welding terminate, open welding protection device and make it provide protective gas, protective gas surrounds the welding position between two metalworks;
D, welding terminate, and continue to provide protective gas, stop providing protective gas to welding position cooling.
In an embodiment, two metalworks to be welded are steelwork and steelwork, steelwork and copper fitting, or, copper fitting and copper fitting.
In an embodiment, between welding protection device and metalwork, gap is assembled, fit-up gap >=0.1mm.
In an embodiment, welding protection device from an end face pass-out protective gas, during assembling, the distance >=0.5mm between the end face of welding protection device pass-out protective gas and welding position.
Described welding protection method is applied to the welding of reservoir pipe arrangement and reservoir housing, the welding of refrigeration compressor air suction pipe and reservoir escape pipe, pipe in refrigeration compressor air suction, air suction outer tube, the welding of blast pipe and compressor housing, the pipe arrangement of silencer for air conditioner and the welding of housing, the welding of gas-liquid separator pipe arrangement and housing, the welding of gs-oil separator pipe arrangement and housing, the welding of break valve for air conditioner pipe arrangement and valve body, the pipe arrangement of air-conditioner, pipeline fitting, the welding of tube connector, or, non-return valve for air conditioner pipe, idle call dry filter organ pipe, with pipe arrangement on solenoid directional control valve in refrigeration, the welding of pipe arrangement in electronic expansion valve for air conditioner.
The present invention also provides a kind of welding protection device; this welding protection device is used for providing protective gas in the outside of two metalworks; this welding protection device comprises base portion; groove and gas passage is provided with in this base portion; one end of gas passage is used for passing into protective gas; other end communication groove, holds metalwork to be welded when groove is for welding.
In an embodiment, described gas passage comprises the main channel and several branched bottom that are connected, and several branched bottom radially distributes centered by main channel, and main channel is used for passing into protective gas, branched bottom communication groove.
In an embodiment, shape and the bend pipe shape of described groove adapt, and groove has kink, and the connectivity part of described branched bottom and groove is positioned at kink.
In an embodiment, shape and the straight pipe shape of described groove adapt, and the connectivity part of branched bottom and groove is around described groove.
In an embodiment, welding protection device also comprises subsidiary conduit, and this subsidiary conduit one end is used for passing into protective gas, and the other end is for aiming at the welding position of metalwork to be welded.
In an embodiment, welding protection device also comprises fixed support, and described base portion and subsidiary conduit are all removably installed on this fixed support, and gas passage and subsidiary conduit are used for the welding position aiming at metalwork respectively from different directions.
The present invention also provides a kind of welding protection device; this welding protection device is used for providing protective gas in the outside of two metalworks; this welding protection device comprises the body of annular; the hollow bulb that in body, hollow shape circularizes; this hollow bulb is used for passing into protective gas; the inner side of body is provided with several perforate, and this perforate is communicated with hollow bulb, and protective gas is from perforate pass-out.
Compared with prior art, the beneficial effect of the technical program is:
Welding protection method of the present invention starts logical protective gas before welding terminates, and welding terminates rear continuation and leads to protective gas, and guaranteeing can not be oxidized in the cooling procedure of metalwork after welding terminates, and avoids the problem that metalwork surface oxidation even turns black; Welding protection device of the present invention provides protective gas in the outside of two metalworks; the exterior surface air of metalwork is avoided to occur to be oxidized the problem of even turning black; and then avoid the pickling process after welding, avoid environment, ensure product quality.
Accompanying drawing explanation
Fig. 1 is the embodiment one of welding protection device of the present invention carries out gas brazing schematic diagram for the escape pipe of reservoir and housing.
Fig. 2 is the welding protection device of Fig. 1 and the assembling schematic diagram of metalwork to be welded.
Fig. 3 is the cross section view of the base portion of the welding protection device of Fig. 1.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the embodiment two of welding protection device of the present invention carries out gas brazing schematic diagram for reservoir air inlet pipe and housing.
Fig. 6 is the cross section view of the base portion of the welding protection device of Fig. 5.
Fig. 7 and Fig. 8 is the schematic diagram of the welding protection device of Fig. 5 base portion logical protective gas from different directions when carrying out gas brazing for the metalwork of two straight tubes.
Fig. 9 is the schematic diagram of embodiment three for two metalwork gas brazings of welding protection device of the present invention.
Figure 10 is the structural representation of the welding protection device of Fig. 9.
The schematic diagram of Figure 11 to be welding protection device of the present invention for the escape pipe of reservoir and housing carry out arc brazing in argon or high frequency brazing.
The schematic diagram of Figure 12 to be welding protection device of the present invention for the escape pipe of reservoir and housing carry out induction brazing.
The schematic diagram of Figure 13 to be welding protection device of the present invention for the pipe arrangement of gas-liquid separator and housing carry out gas brazing.
Figure 14 is welding protection device of the present invention carries out gas brazing schematic diagram for compressor suction duct and reservoir escape pipe.
The schematic diagram of Figure 15 to be welding protection device of the present invention for the pipe arrangement of silencer for air conditioner and housing carry out gas brazing.
Detailed description of the invention
Below in conjunction with accompanying drawing, by specific embodiment, clear, complete description is carried out to technical scheme of the present invention.
Please refer to shown in Fig. 1, the invention provides a kind of welding protection method, comprise the following steps:
A, outside to be welded two metalworks 2 erection welding protective device 1, preheating is carried out to the position to be welded between two metalworks 2, to reduce welding stress, avoids welding to crack.
B, access solder, start welding.
Before C, welding terminate, open welding protection device 1 and make it provide protective gas, protective gas surrounds the welding position between two metalworks 2, thus eliminates air, avoids metalwork 2 contact with oxygen and be oxidized.
D, welding terminate, and continue to provide protective gas, stop providing protective gas to welding position cooling.
The oxidation of metalwork occurs in the process cooled gradually after welding terminates, and after welding terminates, lead to protective gas again in prior art, and only in metalwork, lead to protective gas, metalwork surface is inevitably oxidized.And welding protection method of the present invention; just start to provide protective gas before welding terminates; protective gas surrounds welding position; air is foreclosed; continue to provide protective gas to cool to welding position after welding terminates; avoid welding position and terminate ingress of air to the process of cooling in welding, thus effectively avoid metalwork 2 to be oxidized.And protective gas starts supply before welding terminates, instead of weld at the beginning and namely supply protective gas, greatly can save the use amount of protective gas, improve its service efficiency.
Described welding can be gas brazing, arc brazing in argon, high frequency brazing or induction brazing etc., does not enumerate, this welding protection method all can be adopted to carry out the protection of metalwork 2 outer surface, avoid metalwork 2 surface oxidation at this.Described protective gas is inert gas, can be argon gas, carbon dioxide or the mixture of the two, and be not limited thereto.
Described metalwork 2 can be steelwork or copper fitting, and steelwork refers to the metalwork containing Steel material, and comprise stainless steel or carbon steel, this is not restricted.Copper fitting refers to the metalwork of copper-bearing materials, and comprise other alloy of fine copper, copper steel alloy or cupric, this is not restricted.Two metalworks 2 to be welded can be steelwork and steelwork, steelwork and copper fitting, or, copper fitting and copper fitting, and be not limited thereto, the metalwork of other material can adopt this welding protection method to protect equally.Described metalwork 2 can be pipe fitting or housing, and that is two metalworks to be welded can be pipe fitting and housing, pipe fitting and pipe fitting or housing and housing, and are not limited thereto.
Please refer to shown in Fig. 2, before welding during erection welding protective device 1, between welding protection device 1 and metalwork 2, gap is assembled, fit-up gap d >=0.1mm.Welding protection device 1 from an end face pass-out protective gas, during assembling, the distance D >=0.5mm between the end face of welding protection device 1 pass-out protective gas and welding position.This assembling mode can guarantee that protective gas effectively surrounds the welding position between two metalworks 2, thus reaches good protected effect.
Above-described welding protection method can be applicable to the welding of reservoir pipe arrangement and reservoir housing, the welding of refrigeration compressor air suction pipe and reservoir escape pipe, pipe in refrigeration compressor air suction, air suction outer tube, the welding of blast pipe and compressor housing, the pipe arrangement of silencer for air conditioner and the welding of housing, the welding of gas-liquid separator pipe arrangement and housing, the welding of gs-oil separator pipe arrangement and housing, the welding of break valve for air conditioner pipe arrangement and valve body, the pipe arrangement of air-conditioner, pipeline fitting, the welding of tube connector, or, non-return valve for air conditioner pipe, idle call dry filter organ pipe, with pipe arrangement on solenoid directional control valve in refrigeration, the welding of pipe arrangement in electronic expansion valve for air conditioner, and be not limited thereto.Please refer to shown in Fig. 1, for the escape pipe of reservoir and housing carry out the schematic diagram of gas brazing; Please refer to shown in Fig. 5, for reservoir air inlet pipe and housing carry out the schematic diagram of gas brazing; Please refer to shown in Figure 11, for the escape pipe of reservoir and housing carry out the schematic diagram of arc brazing in argon or high frequency brazing; Please refer to shown in Figure 12, for the escape pipe of reservoir and housing carry out the schematic diagram of induction brazing; Please refer to shown in Figure 13, for the pipe arrangement of gas-liquid separator and housing carry out the schematic diagram of gas brazing; Please refer to shown in Figure 14, for compressor suction duct and reservoir escape pipe carry out the schematic diagram of gas brazing; Please refer to shown in Figure 15, for the pipe arrangement of silencer for air conditioner and housing carry out the schematic diagram of gas brazing.
Please refer to shown in Fig. 1-4, the present invention also provides a kind of welding protection device 1, and this welding protection device 1, for providing protective gas in the outside of two metalworks 2, to protect the outer surface of metalwork 2, avoids it to be oxidized.This welding protection device 1 comprises base portion 11, and be provided with groove 12 and gas passage 13 in this base portion 11, one end of gas passage 13 is used for passing into protective gas, other end communication groove 12, holds metalwork 2 to be welded when groove 12 is for welding.When carrying out welding gas protection; protective gas passes into from gas passage 13; flow out from groove 12; then aim at metalwork 2 to flow out; thus the air outside the welding position between the metalwork 2 of two welding can be washed away; and then protective gas surrounds welding position, play the effect that protection metalwork 2 outer surface is not oxidized.Protective gas is inert gas, can be argon gas, carbon dioxide or the mixture of the two.Described metalwork 2 can be steelwork or copper fitting, and steelwork refers to the metalwork containing Steel material, and comprise stainless steel or carbon steel, this is not restricted.Copper fitting refers to the metalwork of copper-bearing materials, and comprise other alloy of fine copper, copper steel alloy or cupric, this is not restricted.Two metalworks 2 to be welded can be steelwork and steelwork, steelwork and copper fitting, or, copper fitting and copper fitting, and be not limited thereto, the metalwork of other material can adopt this welding protection device to protect equally.Described metalwork 2 can be pipe fitting or housing, and that is two metalworks to be welded can be pipe fitting and housing, pipe fitting and pipe fitting or housing and housing, and are not limited thereto.Welding protection device 1 carries out gas shield when can be applicable to the solderings such as gas brazing, arc brazing in argon, high frequency brazing or induction brazing, does not enumerate at this.Please refer to shown in Fig. 1, is the schematic diagram of gas brazing; Please refer to shown in Figure 11, is the schematic diagram of arc brazing in argon or high frequency brazing; Please refer to shown in Figure 12, is the schematic diagram of induction brazing.
Described gas passage 13 comprises the main channel 131 and several branched bottom 132 that are connected, and several branched bottom 132 radially distributes centered by main channel 131, main channel 131 for passing into protective gas, branched bottom 132 communication groove 12.Protective gas passes into gas passage 13 from main channel 131, is then flowed out by branched bottom 132, and because branched bottom 132 radially distributes, protective gas more easily washes away the air of the welding position between two metalworks 2, thus surrounds welding position.
The shape of groove 12 and the shape of metalwork 2 to be welded adapt, in one embodiment, please refer to shown in Fig. 1 and Fig. 3, Fig. 1 is the schematic diagram that the escape pipe of reservoir and housing carry out gas brazing, the escape pipe of reservoir is bend pipe, shape and the bend pipe shape of described groove 12 adapt, and groove 12 has kink 121, and described branched bottom 132 is positioned at kink 121 with the connectivity part of groove 12.Before welding, one end of bend pipe is assemblied in groove 12, and the kink 121 of groove 12 aims at the turn of bilge of bend pipe, thus protective gas very successfully can flow to the welding position of escape pipe and housing from kink 121.
In another embodiment, please refer to shown in Fig. 5 and Fig. 6, Fig. 5 is the schematic diagram that reservoir air inlet pipe and housing carry out gas brazing, and reservoir air inlet pipe is straight tube, shape and the straight pipe shape of described groove 12 adapt, and the connectivity part of branched bottom 132 and groove 12 is around described groove 12.Before welding, reservoir air inlet pipe one end is assemblied in groove 12, and branched bottom 132 surrounds straight tube just, thus protective gas very successfully can flow to the welding position of air inlet pipe and housing from branched bottom 132.
Please refer to shown in Fig. 1, Fig. 2 and Fig. 5; described welding protection device 1 also comprises subsidiary conduit 15; this subsidiary conduit 15 one end is used for passing into protective gas; the other end is for aiming at the welding position of metalwork 2 to be welded; supplementing protective gas further, guaranteeing protective gas completely around living welding position.Described welding protection device 1 also comprises fixed support 16, and described base portion 11 and subsidiary conduit 15 are all removably installed on this fixed support 16, and gas passage 13 and subsidiary conduit 15 are for aiming at the welding position of metalwork 2 respectively from different directions.As shown in Fig. 1, Fig. 5, Figure 11 and Figure 12, base portion 11 provides protective gas from longitudinal direction to welding position, and subsidiary conduit 15 provides protective gas from horizontal direction to welding position." longitudinal direction " and " transverse direction " refers to two metalworks 2 of welding for relative position relation during position shown in Fig. 1, Fig. 5, Figure 11 and Figure 12, and this is not restricted.As shown in Figures 7 and 8, illustrate the schematic diagram of the logical protective gas from different directions of base portion 11 when welding protection device carries out gas brazing for the metalwork 2 of two straight tubes, " longitudinal direction " can be up or down.As shown in Figure 14 and Figure 15, base portion 11 provides the direction of protective gas then for horizontal.
Please refer to shown in Fig. 9 and Figure 10; the present invention also provides a kind of welding protection device 1; this welding protection device 1 is for providing protective gas in the outside of two metalworks 2; this welding protection device 1 comprises the body 17 of annular; the hollow bulb 171 that in body 17, hollow shape circularizes, this hollow bulb 171 is for passing into protective gas, and the inner side of body 17 is provided with several perforate 172; this perforate 172 is communicated with hollow bulb 171, and protective gas is from perforate 172 pass-out.During welding, the body 17 of this annular can be placed on the outside of welding position, thus protective gas can be very easy to around welding position, avoids it to be oxidized to protect welding position.Described perforate 172 is uniformly distributed in the inner side of the body 17 of annular, is beneficial to the dispersed outside to welding position of protective gas.Described perforate 172 can be circular hole, square hole or elongated bar hole, and this is not restricted.In addition, the body 17 of this annular is provided with air inlet 173 and gas outlet 174, for passing into protective gas from air inlet 173 in hollow bulb 171.
Described welding protection device can be applicable to the welding of reservoir pipe arrangement and reservoir housing, the welding of refrigeration compressor air suction pipe and reservoir escape pipe, pipe in refrigeration compressor air suction, air suction outer tube, the welding of blast pipe and compressor housing, the pipe arrangement of silencer for air conditioner and the welding of housing, the welding of gas-liquid separator pipe arrangement and housing, the welding of gs-oil separator pipe arrangement and housing, the welding of break valve for air conditioner pipe arrangement and valve body, the pipe arrangement of air-conditioner, pipeline fitting, the welding of tube connector, or, non-return valve for air conditioner pipe, idle call dry filter organ pipe, with pipe arrangement on solenoid directional control valve in refrigeration, the welding of pipe arrangement in electronic expansion valve for air conditioner.Please refer to shown in Fig. 1, for the escape pipe of reservoir and housing carry out the schematic diagram of gas brazing; Please refer to shown in Fig. 5, for reservoir air inlet pipe and housing carry out the schematic diagram of gas brazing; Please refer to shown in Figure 11, for the escape pipe of reservoir and housing carry out the schematic diagram of arc brazing in argon or high frequency brazing; Please refer to shown in Figure 12, for the escape pipe of reservoir and housing carry out the schematic diagram of induction brazing; Please refer to shown in Figure 13, for the pipe arrangement of gas-liquid separator and housing carry out the schematic diagram of gas brazing; Please refer to shown in Figure 14, for compressor suction duct and reservoir escape pipe carry out the schematic diagram of gas brazing; Please refer to shown in Figure 15, for the pipe arrangement of silencer for air conditioner and housing carry out the schematic diagram of gas brazing.
In sum, welding protection device 1 of the present invention, provides protective gas in the outside of two metalworks 2; avoid the exterior surface air of metalwork 2 that the problem of oxidation occurs; and then avoid the pickling process after welding, avoid environment, ensure product quality.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solution of the present invention; therefore; every content not departing from technical solution of the present invention; the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong to the protection domain of technical solution of the present invention.
Claims (12)
1. a welding protection method, is characterized in that, comprises the following steps:
A, outside to be welded two metalworks erection welding protective device, preheating is carried out to the position to be welded between two metalworks;
B, access solder, start welding;
Before C, welding terminate, open welding protection device and make it provide protective gas, protective gas surrounds the welding position between two metalworks;
D, welding terminate, and continue to provide protective gas, stop providing protective gas to welding position cooling.
2. welding protection method according to claim 1, is characterized in that, two metalworks to be welded are steelwork and steelwork, steelwork and copper fitting, or, copper fitting and copper fitting.
3. welding protection method according to claim 1, is characterized in that, between welding protection device and metalwork, gap is assembled, fit-up gap >=0.1mm.
4. welding protection method according to claim 1, is characterized in that, welding protection device from an end face pass-out protective gas, during assembling, the distance >=0.5mm between the end face of welding protection device pass-out protective gas and welding position.
5. the welding of reservoir pipe arrangement and reservoir housing is applied to according to described welding protection method arbitrary in claim 1-4, the welding of refrigeration compressor air suction pipe and reservoir escape pipe, pipe in refrigeration compressor air suction, air suction outer tube, the welding of blast pipe and compressor housing, the pipe arrangement of silencer for air conditioner and the welding of housing, the welding of gas-liquid separator pipe arrangement and housing, the welding of gs-oil separator pipe arrangement and housing, the welding of break valve for air conditioner pipe arrangement and valve body, the pipe arrangement of air-conditioner, pipeline fitting, the welding of tube connector, or, non-return valve for air conditioner pipe, idle call dry filter organ pipe, with pipe arrangement on solenoid directional control valve in refrigeration, the welding of pipe arrangement in electronic expansion valve for air conditioner.
6. a welding protection device; it is characterized in that; this welding protection device is used for providing protective gas in the outside of two metalworks; this welding protection device comprises base portion; groove and gas passage is provided with in this base portion; one end of gas passage is used for passing into protective gas, other end communication groove, holds metalwork to be welded when groove is for welding.
7. welding protection device according to claim 6; it is characterized in that, described gas passage comprises the main channel and several branched bottom that are connected, and several branched bottom radially distributes centered by main channel; main channel is used for passing into protective gas, branched bottom communication groove.
8. welding protection device according to claim 7, is characterized in that, shape and the bend pipe shape of described groove adapt, and groove has kink, and the connectivity part of described branched bottom and groove is positioned at kink.
9. welding protection device according to claim 7, is characterized in that, shape and the straight pipe shape of described groove adapt, and the connectivity part of branched bottom and groove is around described groove.
10. welding protection device according to claim 6, is characterized in that, also comprise subsidiary conduit, and this subsidiary conduit one end is used for passing into protective gas, and the other end is for aiming at the welding position of metalwork to be welded.
11. welding protection devices according to claim 10; it is characterized in that; also comprise fixed support, described base portion and subsidiary conduit are all removably installed on this fixed support, and gas passage and subsidiary conduit are used for the welding position aiming at metalwork respectively from different directions.
12. 1 kinds of welding protection devices; it is characterized in that; this welding protection device is used for providing protective gas in the outside of two metalworks; this welding protection device comprises the body of annular; the hollow bulb that in body, hollow shape circularizes, this hollow bulb is used for passing into protective gas, and the inner side of body is provided with several perforate; this perforate is communicated with hollow bulb, and protective gas is from perforate pass-out.
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| CN201510884672.8A CN105328297A (en) | 2015-11-30 | 2015-11-30 | Welding protection method, application and device |
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| CN201510884672.8A CN105328297A (en) | 2015-11-30 | 2015-11-30 | Welding protection method, application and device |
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| CN105328297A true CN105328297A (en) | 2016-02-17 |
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| CN106270915A (en) * | 2016-08-31 | 2017-01-04 | 安徽众汇制冷有限公司 | A kind of air conditioning liquid reservoir welding protection device and using method thereof |
| CN107984053A (en) * | 2017-12-19 | 2018-05-04 | 佛山市胜安制冷配件有限公司 | Gas welding protection device |
| CN108705171A (en) * | 2018-06-26 | 2018-10-26 | 芜湖三花制冷配件有限公司 | A kind of pipe fitting welding protective device and its welding method |
| CN109926691A (en) * | 2017-12-19 | 2019-06-25 | 佛山市胜安制冷配件有限公司 | Gas for welding refrigeration system components welds protective device |
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| CN106270915B (en) * | 2016-08-31 | 2018-08-31 | 安徽众汇制冷有限公司 | A kind of application method of air conditioning liquid reservoir welding protection device |
| CN107984053A (en) * | 2017-12-19 | 2018-05-04 | 佛山市胜安制冷配件有限公司 | Gas welding protection device |
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