CN106270915A - A kind of air conditioning liquid reservoir welding protection device and using method thereof - Google Patents
A kind of air conditioning liquid reservoir welding protection device and using method thereof Download PDFInfo
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- CN106270915A CN106270915A CN201610793997.XA CN201610793997A CN106270915A CN 106270915 A CN106270915 A CN 106270915A CN 201610793997 A CN201610793997 A CN 201610793997A CN 106270915 A CN106270915 A CN 106270915A
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- 238000003466 welding Methods 0.000 title claims abstract description 190
- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 238000004378 air conditioning Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims abstract description 134
- 229910000679 solder Inorganic materials 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims description 163
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 39
- 229910052757 nitrogen Inorganic materials 0.000 claims description 20
- 238000009826 distribution Methods 0.000 claims description 19
- 239000011148 porous material Substances 0.000 claims description 16
- 239000000470 constituent Substances 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 12
- 229910052787 antimony Inorganic materials 0.000 claims description 11
- 229910052748 manganese Inorganic materials 0.000 claims description 11
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- 229910052717 sulfur Inorganic materials 0.000 claims description 11
- 229910052725 zinc Inorganic materials 0.000 claims description 11
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 210000003437 trachea Anatomy 0.000 claims description 10
- 230000007547 defect Effects 0.000 claims description 8
- 229910052718 tin Inorganic materials 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 claims description 5
- 239000000356 contaminant Substances 0.000 claims description 5
- 239000003345 natural gas Substances 0.000 claims description 5
- 238000011017 operating method Methods 0.000 claims description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 claims 2
- MFUZXFWVYOMQBM-UHFFFAOYSA-N dimethyl 2,3-diacetylbutanedioate Chemical compound COC(=O)C(C(C)=O)C(C(C)=O)C(=O)OC MFUZXFWVYOMQBM-UHFFFAOYSA-N 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 239000010949 copper Substances 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 10
- 229910052802 copper Inorganic materials 0.000 abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010301 surface-oxidation reaction Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 238000005219 brazing Methods 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000003912 environmental pollution Methods 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- JTEDVYBZBROSJT-UHFFFAOYSA-N indole-3-butyric acid Chemical compound C1=CC=C2C(CCCC(=O)O)=CNC2=C1 JTEDVYBZBROSJT-UHFFFAOYSA-N 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 210000000080 chela (arthropods) Anatomy 0.000 description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005491 wire drawing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- -1 acetyl Dimethyl succinate Chemical compound 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- B23K5/00—Gas flame welding
- B23K5/02—Seam welding
-
- 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
- B23K5/003—Gas flame welding the welding zone being shielded against the influence of the surrounding atmosphere
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of air conditioning liquid reservoir welding protection device and using method thereof, belong to welding technology field.This air conditioning liquid reservoir welding protection device includes outer ventilation block and interior ventilation block, and outer ventilation block is rectangular block shape structure, and it is provided with horizontal gas hole and longitudinal gas hole, and connects hole by outer ventilation and be connected with source of the gas；Interior ventilation block is provided with interior gas hole, and connects hole by interior ventilation and be connected with source of the gas.The method of the present invention by interior ventilation block logical protection gas in cylinder, has been welded to stand and has been protected gas by outer ventilation block to welding position copper, it is to avoid air contact weld seam in welding process.The present invention is avoided that when reservoir welds, welding position surface oxidation, strengthens solder design intensity, improves end product quality, reduces production cost.
Description
Technical field
The invention belongs to welding technology field, more particularly, it relates to a kind of air conditioning liquid reservoir welding protection device and
Using method.
Background technology
Air conditioning liquid reservoir, is used for storing coolant, and Main Function includes realizing gas-liquid separation, removes foreign body, also carries out back
The control of oil mass.The material that the turnover trachea of tradition reservoir uses is red copper, the Welder between turnover trachea and cylinder
Skill many employings flame welding, furnace brazing, ratio-frequency welding, welding material is respectively silver solder, strong solder, phosphor bronze solder；Use
The product of above-mentioned processes, material cost and welding cost are higher, and working environment is poor.
In air conditioning liquid reservoir, escape pipe is divided into and is positioned at the straight tube inside and outside cylinder and bend pipe two parts, and it is by welding and cylinder
Body is linked together.Owing to straight-tube portion is in the inside of cylinder, it does not contact with extraneous air, thus is difficult to get rusty, at this
Part uses copper pipe has unlike using steel pipe for what advantage, and copper than just under same volume price exceed several times, thus real
Selecting the obvious manufacturing cost of copper pipe higher in matter, escape pipe material, for reducing product material cost, is changed by the most a lot of producers
For steel matter.But owing to using gas brazing often to cause the weld part of two weld metal pieces between steelwork and steelwork
Position surface oxidation, can turn black after oxidation, when postwelding sprays paint, is intercepted by the oxide-film that thick layer is thick between surface paint film and steel pipe,
Cause paint film to lose the adhesion with steel pipe, have a strong impact on the rust inhibition of paint film, thus postwelding needs through follow-up cleaning and
The operations such as polishing are processed to scale removal, not only considerably increase welding cost, and cleaning process needs to use in a large number
Chemicals, can serious environment pollution, and product appearance is easily had undesirable effect by polishing process, thus after affecting welding
Product quality.
It addition, cylinder and escape pipe connection place, cylinder is the structure that overall wall thickness is thicker, and thickness of steel pipe is relatively thin, causes
Both are dramatically different in the thermal capacity of welding portion, there is the setting difficulty of welding condition, and cylinder is welding with the junction of steel pipe
Easily loosen when connecing, cause welding portion shape not ideal enough, and because of the common effect of above-mentioned factor, cause weldquality poor,
Affect using effect.
Summary of the invention
1, problem to be solved
The gas brazing mode welded with steelwork for existing air conditioning liquid reservoir employing steelwork, can cause welding position
Surface oxidation, welding is reliable and the problem of weldquality difference, the present invention provide one air conditioning liquid reservoir welding protection device and
Using method, uses weld jig auxiliary during reservoir gas brazing, is passed through protective gas butt welded seam and protects, keep away
Exempt from welding position surface oxidation, meanwhile, optimize welding method, improve weldquality.
2, technical scheme
For solving the problems referred to above, the present invention adopts the following technical scheme that.
A kind of air conditioning liquid reservoir welding protection device, including outer ventilation block and interior ventilation block, it is characterised in that: outside described
Ventilation block is rectangular block shape structure, and on the left of it, inside is provided with groove, and groove matches with the escape pipe of reservoir, at the bottom of outer ventilation block
The left end in face is provided with boss, is provided with 2 horizontal gas holes in the boss of groove both sides symmetrically, and horizontal gas hole is communicated to boss
Right side；Being provided with two gas distribution passages to lateral symmetry above described outer ventilation block further groove, horizontal gas hole passed through
Pore and gas distribution channel connection；In described outer ventilation block, the right side of boss is along its length about the lateral symmetry distribution of groove
Having longitudinal gas hole, longitudinal gas hole upper end to be connected with gas distribution passage, lower end is communicated to the bottom surface of outer ventilation block；Described is outer logical
The upper surface of air parcel is provided with outer ventilation and connects hole, and outer ventilation connects hole connection gas distribution passage；The upper surface of described interior ventilation block is provided with
The round platform matched with the air inlet pipe of reservoir, the centre of round platform is provided with interior gas hole；The side of described interior ventilation block is provided with
Interior ventilation connects hole, and interior ventilation connects hole and connects with interior gas hole.
Further, the upper surface of described outer ventilation block is provided with hole, location, and the bottom surface of interior ventilation block is provided with installing hole, fixed
Hole, position and installing hole are screwed hole.
Further, being connected by transitional pore between two described gas distribution passages, outer ventilation connects hole and connects transitional pore,
And by transitional pore and two gas distribution channel connections.
Further, it is connected with groove by middle part gas hole in the middle of described transitional pore.
Further, the lower end of described longitudinal gas hole is to groove one lateral buckling.
Further, it is 3 right that described longitudinal gas hole is provided with along outer ventilation block length direction, and respectively first longitudinally blows
Hole, second longitudinal gas hole and the 3rd longitudinal gas hole, the distance between 2 first longitudinal gas holes is equal to 2 second longitudinally
The distance of gas hole and more than 2 the 3rd the distance of longitudinal gas holes.
A kind of using method of air conditioning liquid reservoir welding protection device, its operating procedure is as follows:
1. reservoir to be welded is carried out ultrasonic waves for cleaning, removes surface and oil contaminant, the defect such as get rusty, and be dried；
2. being fixed by interior ventilation block, and be inserted on the round platform of interior ventilation block by the air inlet pipe end of reservoir, interior ventilation connects hole
Connect protection gas source of the gas；
3. in the escape pipe of reservoir being inserted cylinder and position, meanwhile, outer ventilation block is stuck in escape pipe by groove
On, and fixing outer block of ventilating, outer ventilation connects hole and connects protection gas source of the gas；
4. flame welding gun is adjusted to position, and interior ventilation block connects source of the gas, and protective gas is full of inside reservoir, controls air pressure
For 0.03-0.06MPa, the welding position of cylinder and escape pipe is preheated, and accesses solder, start welding；
5. welding terminates moment, immediately outer ventilation block is connected source of the gas, and welding position surrounding is full of protective gas, and controls
Air pressure is 0.05-0.10MPa, gets rid of air, it is to avoid welding position aoxidizes；
6. wait that reservoir is cooled to room temperature, stop internally ventilation block and outer ventilation block supply protection gas；
7. take off the reservoir welded, i.e. complete welding operation.
Further, described step is 4. middle uses automatic turntable solderer to weld, and welding machine has 12 stations, passes through
Dispenser realizes continuous automatic welding, and gage of wire is φ 1.2mm；During welding, burning gases are natural gas and oxygen, protect gas
Body is nitrogen, and gas pressure is 0.05-0.08MPa, and oxygen pressure is 0.3-0.6MPa, and nitrogen pressure is 0.03-
0.06MPa；Welded gaps between escape pipe and cylinder is 0.1-0.2mm, and welding section length of fit is 5-8mm.
Further, welding uses no-clean scaling powder, and its constituent and mass fraction be: Colophonium 3～6 parts, acetyl
Dimethyl succinate 1～4 parts, indolebutyric acid 0.5～1 part, TTA 0.2～0.6 part, isopropanol 75～90 parts.
Further, welding uses the constituent of solder and the mass fraction to be: Cu is 57%～60%, Zn be 38%～
40%, Sb are 0.4%～1%, and Mn is 0.1%, and Ni is 0.3%～0.5%, and Sn is 0.1%～1.5%, S be 0.1%～
0.4%.
3, beneficial effect
Compared to prior art, the invention have the benefit that
(1) air conditioning liquid reservoir welding protection device of the present invention, has outer ventilation block and interior ventilation block, and existing reservoir welds
Time because of in reservoir welding position temperature the highest, be surrounded by oxygen and welding protection gas, so can oxidized blackout, this
The interior block inside to reservoir in welding process of ventilating of bright employing carries out ventilation protection, it is to avoid the problems referred to above；Use outer ventilation
Block, is passed through protection gas after welding completes and protects welding position, it is to avoid face of weld ingress of air generation oxidizing blackening
Problem, and then avoid the pickling process after welding, it is to avoid to environment, it is ensured that product quality, this outer ventilation
Block is by horizontal gas hole and the reasonable Arrangement of longitudinal gas hole, it is possible to the comprehensively logical protection of reservoir welding position surrounding
Gas, avoids air contact welding position completely, and this device overcomes the skill of steelwork and steelwork employing flame non-oxidation soldering
An art difficult problem, expands the use field of gas brazing；
(2) air conditioning liquid reservoir welding protection device of the present invention, outer ventilation block is installed fixing by hole, location, and interior ventilation block leads to
Cross installing hole and install fixing, it is possible to be reservoir is stable, the most spacing fixing, facilitate welding operation；
(3) air conditioning liquid reservoir welding protection device of the present invention, the lower end of longitudinal gas hole, to groove one lateral buckling, makes protection
Alignment welding position, gas blowout gas direction, preferably carries out welding position protection；
(4) air conditioning liquid reservoir welding protection device of the present invention, it is 3 right that longitudinal gas hole is provided with along outer ventilation block length direction,
Circumferentially distributed along escape pipe, covers welding position comprehensively, avoids air to contact with welding position completely；
(5) using method of air conditioning liquid reservoir welding protection device of the present invention, welding process is entered by welding protection device
Row is protected, it is to avoid reservoir and the oxidized blackout of escape pipe welding portion, and interior ventilation block venting pressure is 0.03-0.06MPa,
Less than this pressure, do not have protected effect, more than this pressure, owing to protection gas is ventilated from lower to upper, weld seam also can enter guarantor
Protect gas, affect solder flowing down, and the flowing of excessive pressure protection gas can take away the heat of workpiece in welding process, makes work
Part welding temperature is inadequate, affects infiltration and the intensity of weld seam, and in this pressure limit, welding protection effect and welding heat utilize
Reach best；Having welded moment, outer ventilation block venting pressure is 0.05-0.10MPa, poor, greatly less than this pressure protected effect
In this scope, when just weld, solder solidifies not yet, and weld seam can be blown depression by excessive protection gas, affect solder intensity and
Attractive in appearance, on the other hand, protection gas has the effect of cooling, and it is excessive that solder does not solidifies front pressure, makes solder quickly cooling, and weld seam can be caused to hold
Split etc. bad, affect weld strength.
(6) using method of air conditioning liquid reservoir welding protection device of the present invention, uses automatic turntable solderer to weld,
And welding machine has 12 stations, realizing continuous automatic welding by dispenser, not only automaticity is high, efficiency is high, and welds
Connecing the used time short, each station is carried out simultaneously, when preventing the illogical protection gas of welding process China and foreign countries ventilation block, along with the prolongation of weld seam, front
Face has solidified the situation appearance of weld seam and air contact oxidation, if this occurs, even if follow-up outer ventilation block is passed through protection
Gas has been not fee from the oxidation of welding position；Meanwhile, the welded gaps controlled between escape pipe and cylinder is 0.1-0.2mm,
Welding section length of fit is 5-8mm, and in welding condition is: gas pressure 0.05-0.08MPa, oxygen pressure 0.3-
0.6MPa, is carried out under the welding surroundings of nitrogen pressure 0.03-0.06MPa, and solder can be full of welded gaps uniformly, does not has
Excess solder flows in cylinder, and weld seam is tight and does not results in weld blowhole, and weld strength is high.
(7) using method of air conditioning liquid reservoir welding protection device of the present invention, for increasing the mobility of solder, uses and exempts from clearly
Washing scaling powder, without halogen, have no irritating odor, free from environmental pollution, the scaling powder tack using this formula is good, can add fierce
Connecing ability, solder joint is full, bright, firm, preferably reduce be soldered material surface tension, assist conduction of heat, prevent oxidisability,
Improving speed of welding and clean metal, and it does not corrode mother metal, TTA enhances product stability, and storage is super
Spend 2 years, still there is good performance.
(8) using method of air conditioning liquid reservoir welding protection device of the present invention, goes out with relatively thin for adapting to thicker cylinder
Welding between trachea, constituent and solder to solder are optimized, and strengthen its wettability and diffusion, compare common
Strong solder wettability improve about 2%, solder improves about 0.3 times with the diffusion rate of mother metal, thus efficient solution
When certainly cylinder welds from escape pipe, the thermal capacity of welding position is different, and welding condition is difficult to the problem set, and it is firm to weld, weld seam
Shape matching is consistent, and weldquality is high.
Accompanying drawing explanation
Fig. 1 is the front view of air conditioning liquid reservoir welding protection device of the present invention China and foreign countries ventilation block；
Fig. 2 is the top view of air conditioning liquid reservoir welding protection device of the present invention China and foreign countries ventilation block；
Fig. 3 is the left view of air conditioning liquid reservoir welding protection device of the present invention China and foreign countries ventilation block；
Fig. 4 is the front sectional view of air conditioning liquid reservoir welding protection device of the present invention China and foreign countries ventilation block；
Fig. 5 is the sectional view of A-A in Fig. 4；
Fig. 6 is the sectional view of B-B in Fig. 5；
Fig. 7 is the sectional view of C-C in Fig. 6；
Fig. 8 is the sectional view of D-D in Fig. 6；
Fig. 9 is the sectional view of interior ventilation block in air conditioning liquid reservoir welding protection device of the present invention；
Figure 10 is the use view of air conditioning liquid reservoir welding protection device of the present invention.
Label in figure is expressed as follows respectively:
1, outer ventilation block；
101, groove；102, boss；103, horizontal gas hole；104, gas distribution passage；105, air passing hole；106, first longitudinally
Gas hole；107, second longitudinal gas hole；108, the 3rd longitudinal gas hole；109, outer ventilation connects hole；110, transitional pore；111, in
Portion's gas hole；112, hole, location；
2, interior ventilation block；
201, round platform；202, interior gas hole；203, interior ventilation connects hole；204, installing hole.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention is further described below.
Embodiment 1
As shown in Figures 1 to 9, the present embodiment provides a kind of air conditioning liquid reservoir welding protection device, including outer ventilation block 1 He
Interior ventilation block 2；Wherein, described outer ventilation block 1 is rectangular block shape structure, the internal groove 101 that is provided with on the left of it, groove 101 with
The escape pipe of reservoir matches, and the left end of outer ventilation block 1 bottom surface is provided with boss 102, right in the boss 102 of groove 101 both sides
Being provided with 2 horizontal gas holes 103 with claiming, horizontal gas hole 103 is communicated to the right side of boss 102；Described outer ventilation block 1 concave
Being provided with to lateral symmetry above groove 101 two gas distribution passages 104, horizontal gas hole 103 is by air passing hole 105 and gas distribution passage
104 connections；In described outer ventilation block 1, the right side of boss 102 lateral symmetry about groove 101 along its length is distributed vertical
To gas hole, longitudinal gas hole upper end is connected with gas distribution passage 104, and lower end is communicated to the bottom surface of outer ventilation block 1, and longitudinally blows
The lower end in hole, to groove 101 1 lateral buckling, makes alignment welding position, protection gas blowout gas direction, preferably carries out welding position guarantor
Protect；The upper surface of described outer ventilation block 1 is provided with outer ventilation and connects hole 109, by transitional pore 110 between two gas distribution passages 104
Being connected, outer ventilation connects hole 109 and connects transitional pore 110, so that outer ventilation connects hole 109 by transitional pore 110 and two gas distributions
Passage 104 connects；It is connected with groove 101 by middle part gas hole 111 in the middle of described transitional pore 110.
In the present embodiment, it is 3 right that described longitudinal gas hole is provided with along outer ventilation block 1 length direction, and respectively first longitudinally
The longitudinal gas hole of gas hole 106, second 107 and the 3rd longitudinal gas hole 108, the distance between 2 first longitudinal gas holes 106
Distance equal to 2 second longitudinal direction gas holes 107 distance more than 2 the 3rd longitudinal direction gas holes 108.This kind of design, along storage
Liquid device escape pipe circumferentially distributed, covers welding position comprehensively, avoids air to contact with welding position completely.
The upper surface of described interior ventilation block 2 is provided with the round platform 201 that the air inlet pipe with reservoir matches, round platform 201
Centre is provided with interior gas hole 202；The side of described interior ventilation block 2 is provided with interior ventilation and connects hole 203, and interior ventilation connects hole 203 with interior
Gas hole 202 connects.
It addition, the upper surface of described outer ventilation block 1 is provided with hole 112, location, the bottom surface of interior ventilation block 2 is provided with installing hole
204, hole 112, location and installing hole 204 are screwed hole, and outer ventilation block 1 is installed fixing by hole 112, location, and interior ventilation block 2 leads to
Cross installing hole 204 and install fixing, it is possible to be reservoir is stable, the most spacing fixing, facilitate welding operation.
Existing reservoir welding time because of in reservoir welding position temperature the highest, be surrounded by oxygen and welding protection
Gas, so the oxidized blackout of meeting, the present embodiment uses the interior ventilation block 2 inside to reservoir in welding process to carry out ventilation guarantor
Protect, it is to avoid the problems referred to above；Use outer ventilation block 1 to be passed through protection gas after welding completes immediately welding position is protected, keep away
The problem exempting from face of weld ingress of air generation oxidizing blackening, and then avoid the pickling process after welding, it is to avoid to environment
Pollute, it is ensured that product quality, this outer ventilation block 1 by horizontal gas hole 103 and the reasonable Arrangement of longitudinal gas hole 106,
Surrounding comprehensively logical protection gas in reservoir welding position can be avoided air contact welding position completely, this device overcomes
Steelwork uses the technical barrier of flame non-oxidation soldering with steelwork, expands the use field of gas brazing.
Embodiment 2
The present embodiment provides the using method of a kind of air conditioning liquid reservoir welding protection device, and this device uses in embodiment 1
Air conditioning liquid reservoir welding protection device, for the cylinder of reservoir and welding of escape pipe, cylinder and escape pipe are steel
Part, it is straight tube that escape pipe is positioned at the part of cylinder, and the part being positioned at outside cylinder is the bend pipe of 90 °, and the external diameter of escape pipe is φ
15mm, wall thickness 1mm, the wall thickness of cylinder is 1.5mm, and cylinder is 0.1mm with the fit clearance of welding of escape pipe, and welding section coordinates long
Degree is 5mm.Using automatic turntable solderer, welded by gas brazing mode, concrete operation step is as follows:
1. the cylinder of reservoir to be welded and escape pipe are carried out ultrasonic waves for cleaning, remove surface and oil contaminant, the defect such as get rusty, and
It is dried.
2. interior ventilation block 2 is fixed on solderer turntable by installing hole 204, and the air inlet pipe end of reservoir is inserted in
On the round platform 201 of interior ventilation block 2, interior ventilation connects hole 203 and connects protection gas source of the gas.
3. in the escape pipe of reservoir being inserted cylinder and position, outer ventilation block 1 is stuck in out by groove 101 meanwhile
On trachea, and by the fixing outer ventilation block 1 in hole, location 112, outer ventilation connects hole 109 and connects protection gas source of the gas；Because escape pipe is bend pipe,
So in the present embodiment, groove 101 is also classified into trough portion and curved groove part so that escape pipe coordinates closely with groove 101, and
Each pore can be directed at welding position.
4. flame welding gun is adjusted to position, and interior ventilation block 2 connects Nitrogen source gases, and nitrogen is full of inside reservoir, controls gas
Pressure is 0.03MPa, preheats the welding position of cylinder and escape pipe, and accesses solder, starts welding.In this step, weldering
Facility have 12 stations, realize continuous automatic welding by dispenser, and gage of wire is φ 1.2mm, use step motor control
Silk feeding quantity, it is ensured that fill solder amount is the most uniform；During welding, burning gases are natural gas and oxygen, and protective gas is nitrogen, all
Being automatically controlled by electromagnetic valve, to guarantee that throughput is stable, gas pressure is 0.05MPa, and oxygen pressure is 0.3MPa, nitrogen pressure
Power is 0.03MPa.
In this step, using no-clean scaling powder during welding, its constituent and mass fraction be: Colophonium 3 parts, acetyl fourth
Acid dimethyl 2 parts, indolebutyric acid 0.5 part, TTA 0.2 part, isopropanol 75 parts.This scaling powder does not contains halogen,
Have no irritating odor, free from environmental pollution, tack is good, can strengthen Weldability, and solder joint is full, bright, firm, preferably reduces
Being soldered material surface tension, assist conduction of heat, prevent oxidisability, improve speed of welding and clean metal, and it does not corrodes
Mother metal, TTA enhances product stability, stores 2.2 years, still has good performance.
In this step, using specific solder, its constituent and mass fraction be: Cu is 57%, and Zn is 40%, and Sb is
0.6%, Mn are 0.1%, and Ni is 0.4%, and Sn is 1.5%, and S is 0.4%.This solder adapts to thicker cylinder and goes out with relatively thin
Welding between trachea, constituent and solder to solder are optimized, and strengthen its wettability and diffusion, compare common
Strong solder wettability improve 2.1%, solder improves 0.3 times with the diffusion rate of mother metal, thus effectively solves cylinder
When welding from escape pipe, the thermal capacity of welding position is different, and welding condition is difficult to the problem set, and it is firm to weld, weld shape ratio
More consistent, weldquality is high.
The concrete preparation method of above-mentioned solder is as follows:
1) first Cu, Zn, Sb, Mn, Ni, Sn and S are weighed by above-mentioned percentage by weight；
2) Sn taking Cu therein and 40% is placed in same pincers crucible, heats and stir into for 30 minutes under 1100 DEG C of temperature conditionss
Homogeneous phase and form intermediate alloy；
3) again intermediate alloy and remaining Sn are placed in melting still, at a temperature of 350 DEG C, heated and stirred 30 minutes, with
Time add above-mentioned Zn, Sb, Mn, Ni and S；
4) under the temperature conditions of 250 DEG C, to the solder alloy stirring ultimately formed, ingot casting or cast bar；
5) by ingot casting or cast bar, extruding under normal temperature condition, wire drawing becomes welding wire.
The solder mechanical tensile property using the method to obtain is good, is not easily broken.
5. welding terminates moment, immediately outer ventilation block 1 is connected Nitrogen source gases, and welding position surrounding is full of protective gas,
And to control air pressure be 0.05MPa, get rid of air, it is to avoid welding position aoxidizes.
6. wait that reservoir is cooled to room temperature, stop internally ventilation block 2 and outer ventilation block 1 supply protection gas.
7. take off the reservoir welded, i.e. complete welding operation.
Butt welded seam checks, along escape pipe surrounding even weld, and smooth surface non-oxidation phenomenon, and after testing in weld seam
Portion's pore-free, the defect such as being mingled with, weld seam total quality is good.
Embodiment 3
The present embodiment provides the using method of a kind of air conditioning liquid reservoir welding protection device, and this device uses in embodiment 1
Air conditioning liquid reservoir welding protection device, for the cylinder of reservoir and welding of escape pipe, cylinder and escape pipe are steel
Part, it is straight tube that escape pipe is positioned at the part of cylinder, and the part being positioned at outside cylinder is the bend pipe of 90 °, and the external diameter of escape pipe is φ
12mm, wall thickness 0.8mm, the wall thickness of cylinder is 1.6mm, and cylinder is 0.2mm with the fit clearance of welding of escape pipe, and welding section coordinates
A length of 7mm.Using automatic turntable solderer, welded by gas brazing mode, concrete operation step is as follows:
1. the cylinder of reservoir to be welded and escape pipe are carried out ultrasonic waves for cleaning, remove surface and oil contaminant, the defect such as get rusty, and
It is dried.
2. interior ventilation block 2 is fixed on solderer turntable by installing hole 204, and the air inlet pipe end of reservoir is inserted in
On the round platform 201 of interior ventilation block 2, interior ventilation connects hole 203 and connects protection gas source of the gas.
3. in the escape pipe of reservoir being inserted cylinder and position, outer ventilation block 1 is stuck in out by groove 101 meanwhile
On trachea, and by the fixing outer ventilation block 1 in hole, location 112, outer ventilation connects hole 109 and connects protection gas source of the gas；Because escape pipe is bend pipe,
So in the present embodiment, groove 101 is also classified into trough portion and curved groove part so that escape pipe coordinates closely with groove 101, and
Each pore can be directed at welding position.
4. flame welding gun is adjusted to position, and interior ventilation block 2 connects Nitrogen source gases, and nitrogen is full of inside reservoir, controls gas
Pressure is 0.05MPa, preheats the welding position of cylinder and escape pipe, and accesses solder, starts welding.In this step, weldering
Facility have 12 stations, realize continuous automatic welding by dispenser, and gage of wire is φ 1.2mm, use step motor control
Silk feeding quantity, it is ensured that fill solder amount is the most uniform；During welding, burning gases are natural gas and oxygen, and protective gas is nitrogen, all
Being automatically controlled by electromagnetic valve, to guarantee that throughput is stable, gas pressure is 0.07MPa, and oxygen pressure is 0.5MPa, nitrogen pressure
Power is 0.05MPa.
In this step, using no-clean scaling powder during welding, its constituent and mass fraction be: Colophonium 5 parts, acetyl fourth
Acid dimethyl 1 part, indolebutyric acid 0.8 part, TTA 0.4 part, isopropanol 80 parts.This scaling powder does not contains halogen,
Have no irritating odor, free from environmental pollution, tack is good, can strengthen Weldability, and solder joint is full, bright, firm, preferably reduces
Being soldered material surface tension, assist conduction of heat, prevent oxidisability, improve speed of welding and clean metal, and it does not corrodes
Mother metal, TTA enhances product stability, stores 2 years, still has good performance.
In this step, using specific solder, its constituent and mass fraction be: Cu is 59%, and Zn is 39%, and Sb is
1%, Mn are 0.1%, and Ni is 0.5%, and Sn is 0.1%, and S is 0.3%.This solder adapts to thicker cylinder and gives vent to anger with relatively thin
Welding between pipe, constituent and solder to solder are optimized, and strengthen its wettability and diffusion, compare common
Strong solder wettability improves 2%, and solder improves 0.4 times with the diffusion rate of mother metal, thus effectively solves cylinder and go out
During trachea welding, the thermal capacity of welding position is different, and welding condition is difficult to the problem set, and it is firm to weld, and weld shape compares one
Causing, weldquality is high.
The concrete preparation method of above-mentioned solder is as follows:
1) first Cu, Zn, Sb, Mn, Ni, Sn and S are weighed by above-mentioned percentage by weight；
2) Sn taking Cu therein and 50% is placed in same pincers crucible, heats and stir into for 35 minutes under 1150 DEG C of temperature conditionss
Homogeneous phase and form intermediate alloy；
3) again intermediate alloy and remaining Sn are placed in melting still, at a temperature of 355 DEG C, heated and stirred 35 minutes, with
Time add above-mentioned Zn, Sb, Mn, Ni and S；
4) under the temperature conditions of 280 DEG C, to the solder alloy stirring ultimately formed, ingot casting or cast bar；
5) by ingot casting or cast bar, extruding under normal temperature condition, wire drawing becomes welding wire.
The solder mechanical tensile property using the method to obtain is good, is not easily broken.
5. welding terminates moment, immediately outer ventilation block 1 is connected Nitrogen source gases, and welding position surrounding is full of protective gas,
And to control air pressure be 0.08MPa, get rid of air, it is to avoid welding position aoxidizes.
6. wait that reservoir is cooled to room temperature, stop internally ventilation block 2 and outer ventilation block 1 supply protection gas.
7. take off the reservoir welded, i.e. complete welding operation.
Butt welded seam checks, along escape pipe surrounding even weld, and smooth surface non-oxidation phenomenon, and after testing in weld seam
Portion's pore-free, the defect such as being mingled with, weld seam total quality is good.
Embodiment 4
The present embodiment provides the using method of a kind of air conditioning liquid reservoir welding protection device, and this device uses in embodiment 1
Air conditioning liquid reservoir welding protection device, for the cylinder of reservoir and welding of escape pipe, cylinder and escape pipe are steel
Part, it is straight tube that escape pipe is positioned at the part of cylinder, and the part being positioned at outside cylinder is the bend pipe of 90 °, and the external diameter of escape pipe is φ
16mm, wall thickness 1.2mm, the wall thickness of cylinder is 1.8mm, and cylinder is 0.2mm with the fit clearance of welding of escape pipe, and welding section coordinates
A length of 8mm.Using automatic turntable solderer, welded by gas brazing mode, concrete operation step is as follows:
1. the cylinder of reservoir to be welded and escape pipe are carried out ultrasonic waves for cleaning, remove surface and oil contaminant, the defect such as get rusty, and
It is dried.
2. interior ventilation block 2 is fixed on solderer turntable by installing hole 204, and the air inlet pipe end of reservoir is inserted in
On the round platform 201 of interior ventilation block 2, interior ventilation connects hole 203 and connects protection gas source of the gas.
3. in the escape pipe of reservoir being inserted cylinder and position, outer ventilation block 1 is stuck in out by groove 101 meanwhile
On trachea, and by the fixing outer ventilation block 1 in hole, location 112, outer ventilation connects hole 109 and connects protection gas source of the gas；Because escape pipe is bend pipe,
So in the present embodiment, groove 101 is also classified into trough portion and curved groove part so that escape pipe coordinates closely with groove 101, and
Each pore can be directed at welding position.
4. flame welding gun is adjusted to position, and interior ventilation block 2 connects Nitrogen source gases, and nitrogen is full of inside reservoir, controls gas
Pressure is 0.06MPa, preheats the welding position of cylinder and escape pipe, and accesses solder, starts welding.In this step, weldering
Facility have 12 stations, realize continuous automatic welding by dispenser, and gage of wire is φ 1.2mm, use step motor control
Silk feeding quantity, it is ensured that fill solder amount is the most uniform；During welding, burning gases are natural gas and oxygen, and protective gas is nitrogen, all
Being automatically controlled by electromagnetic valve, to guarantee that throughput is stable, gas pressure is 0.08MPa, and oxygen pressure is 0.6MPa, nitrogen pressure
Power is 0.06MPa.
In this step, using no-clean scaling powder during welding, its constituent and mass fraction be: Colophonium 6 parts, acetyl fourth
Acid dimethyl 4 parts, indolebutyric acid 1 part, TTA 0.6 part, isopropanol 90 parts.This scaling powder does not contains halogen, nothing
Penetrating odor, free from environmental pollution, tack is good, can strengthen Weldability, and solder joint is full, bright, firm, preferably reduces quilt
Welding material surface tension force, assisting conduction of heat, prevent oxidisability, improve speed of welding and clean metal, and it does not corrode mother
Material, TTA enhances product stability, stores 2.5 years, still has good performance.
In this step, using specific solder, its constituent and mass fraction be: Cu is 60%, and Zn is 38%, and Sb is
0.4%, Mn are 0.1%, and Ni is 0.3%, and Sn is 1.1%, and S is 0.1%.This solder adapts to thicker cylinder and goes out with relatively thin
Welding between trachea, constituent and solder to solder are optimized, and strengthen its wettability and diffusion, compare common
Strong solder wettability improve 2.1%, solder improves 0.3 times with the diffusion rate of mother metal, thus effectively solves cylinder
When welding from escape pipe, the thermal capacity of welding position is different, and welding condition is difficult to the problem set, and it is firm to weld, weld shape ratio
More consistent, weldquality is high.
The concrete preparation method of above-mentioned solder is as follows:
1) first Cu, Zn, Sb, Mn, Ni, Sn and S are weighed by above-mentioned percentage by weight；
2) Sn taking Cu therein and 60% is placed in same pincers crucible, heats and stir into for 40 minutes under 1200 DEG C of temperature conditionss
Homogeneous phase and form intermediate alloy；
3) again intermediate alloy and remaining Sn are placed in melting still, at a temperature of 400 DEG C, heated and stirred 40 minutes, with
Time add above-mentioned Zn, Sb, Mn, Ni and S；
4) under the temperature conditions of 300 DEG C, to the solder alloy stirring ultimately formed, ingot casting or cast bar；
5) by ingot casting or cast bar, extruding under normal temperature condition, wire drawing becomes welding wire.
The solder mechanical tensile property using the method to obtain is good, is not easily broken.
5. welding terminates moment, immediately outer ventilation block 1 is connected Nitrogen source gases, and welding position surrounding is full of protective gas,
And to control air pressure be 0.1MPa, get rid of air, it is to avoid welding position aoxidizes.
6. wait that reservoir is cooled to room temperature, stop internally ventilation block 2 and outer ventilation block 1 supply protection gas.
7. take off the reservoir welded, i.e. complete welding operation.
Butt welded seam checks, along escape pipe surrounding even weld, and smooth surface non-oxidation phenomenon, and after testing in weld seam
Portion's pore-free, the defect such as being mingled with, weld seam total quality is good.
Example of the present invention is only to be described the preferred embodiment of the present invention, not to present inventive concept and
Scope is defined, on the premise of without departing from design philosophy of the present invention, and this area engineers and technicians technology to the present invention
Various deformation that scheme is made and improvement, all should fall into protection scope of the present invention.
Claims (10)
1. an air conditioning liquid reservoir welding protection device, including outer ventilation block (1) and interior ventilation block (2), it is characterised in that: described
Outer ventilation block (1) be rectangular block shape structure, the internal groove (101) that is provided with on the left of it, the escape pipe of groove (101) and reservoir
Matching, the left end of outer ventilation block (1) bottom surface is provided with boss (102), sets symmetrically in the boss (102) of groove (101) both sides
Having 2 horizontal gas holes (103), horizontal gas hole (103) is communicated to the right side of boss (102)；In described outer ventilation block (1)
Being provided with two gas distribution passages (104) to the lateral symmetry of groove (101) top, horizontal gas hole (103) passes through air passing hole (105)
Connect with gas distribution passage (104)；In described outer ventilation block (1), the right side of boss (102) is along its length about groove (101)
Lateral symmetry longitudinal gas hole be distributed, longitudinal gas hole upper end is connected with gas distribution passage (104), and lower end is communicated to outer ventilation
The bottom surface of block (1)；The upper surface of described outer ventilation block (1) is provided with outer ventilation and connects hole (109), and outer ventilation connects hole (109) connection
Gas distribution passage (104)；The upper surface of described interior ventilation block (2) is provided with the round platform (201) that the air inlet pipe with reservoir matches,
The centre of round platform (201) is provided with interior gas hole (202)；The side of described interior ventilation block (2) is provided with interior ventilation and connects hole (203),
Interior ventilation connects hole (203) and connects with interior gas hole (202).
A kind of air conditioning liquid reservoir welding protection device the most according to claim 1, it is characterised in that: described outer ventilation block
(1) upper surface is provided with hole, location (112), and the bottom surface of interior ventilation block (2) is provided with installing hole (204), hole, location (112) and installation
Hole (204) is screwed hole.
A kind of air conditioning liquid reservoir welding protection device the most according to claim 1, it is characterised in that: two described gas distributions
Being connected by transitional pore (110) between passage (104), outer ventilation connects hole (109) and connects transitional pore (110), and passes through transition
Hole (110) connects with two gas distribution passages (104).
A kind of air conditioning liquid reservoir welding protection device the most according to claim 3, it is characterised in that: described transitional pore
(110) it is connected with groove (101) by middle part gas hole (111) in the middle of.
5. according to a kind of air conditioning liquid reservoir welding protection device described in any one in claim 1-4, it is characterised in that: institute
The lower end of the longitudinal gas hole stated is to groove (101) lateral buckling.
A kind of air conditioning liquid reservoir welding protection device the most according to claim 5, it is characterised in that: described longitudinal direction is blown
It is 3 right that hole is provided with along outer ventilation block (1) length direction, respectively first longitudinal gas hole (106), second longitudinal gas hole (107)
With the 3rd longitudinal gas hole (108), the distance between 2 first longitudinal gas holes (106) is longitudinal gas hole equal to 2 second
(107) distance and more than 2 the 3rd the distance of longitudinal gas holes (108).
7. a using method for air conditioning liquid reservoir welding protection device, its operating procedure is as follows:
1. reservoir to be welded is carried out ultrasonic waves for cleaning, removes surface and oil contaminant, the defect such as get rusty, and be dried；
2. interior ventilation block (2) is fixed, and the air inlet pipe end of reservoir is inserted on the round platform (201) of interior ventilation block (2), interior logical
Gas connects hole (203) and connects protection gas source of the gas；
3. in the escape pipe of reservoir being inserted cylinder and position, outer ventilation block (1) is stuck in out by groove (101) meanwhile
On trachea, and fixing outer block (1) of ventilating, outer ventilation connects hole (109) and connects protection gas source of the gas；
4. flame welding gun is adjusted to position, and interior ventilation block (2) connects source of the gas, and protective gas is full of inside reservoir, controls air pressure
For 0.03-0.06MPa, the welding position of cylinder and escape pipe is preheated, and accesses solder, start welding；
5. welding terminates moment, immediately outer ventilation block (1) is connected source of the gas, and welding position surrounding is full of protective gas, and controls
Air pressure is 0.05-0.10MPa, gets rid of air, it is to avoid welding position aoxidizes；
6. wait that reservoir is cooled to room temperature, stop internally ventilating block (2) and outer ventilation block (1) supply protection gas；
7. take off the reservoir welded, i.e. complete welding operation.
The using method of a kind of air conditioning liquid reservoir welding protection device the most according to claim 7, it is characterised in that: described
Step is 4. middle uses automatic turntable solderer to weld, and welding machine has 12 stations, realizes continuous automatic welding by dispenser
Connecing, gage of wire is φ 1.2mm；During welding, burning gases are natural gas and oxygen, and protective gas is nitrogen, and gas pressure is
0.05-0.08MPa, oxygen pressure is 0.3-0.6MPa, and nitrogen pressure is 0.03-0.06MPa；Weldering between escape pipe and cylinder
Connecing gap is 0.1-0.2mm, and welding section length of fit is 5-8mm.
The using method of a kind of air conditioning liquid reservoir welding protection device the most according to claim 8, it is characterised in that: welding
Using no-clean scaling powder, its constituent and mass fraction be: Colophonium 3～6 parts, diacetyl succinic acid dimethyl ester 1～4 parts, Yin
Diindyl butanoic acid 0.5～1 part, TTA 0.2～0.6 part, isopropanol 75～90 parts.
The using method of a kind of air conditioning liquid reservoir welding protection device the most according to claim 9, it is characterised in that: weldering
Connect and use the constituent of solder and the mass fraction to be: Cu is 57%～60%, and Zn is 38%～40%, Sb be 0.4%～
1%, Mn are 0.1%, and Ni is 0.3%～0.5%, and Sn is 0.1%～1.5%, and S is 0.1%～0.4%.
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| 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 |
| CN109719370A (en) * | 2019-01-28 | 2019-05-07 | 嵊州市新起点焊接科技有限公司 | A kind of processing technology of abnormal shape liquid reservoir |
| 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 |
| CN110878997A (en) * | 2018-09-06 | 2020-03-13 | 南通华信中央空调有限公司 | Split liquid separation head packaging method, split liquid separation head refitting method and heat exchanger |
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| CN106270915B (en) | 2018-08-31 |
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Denomination of invention: Application method of welding protection device for air conditioner liquid reservoir Effective date of registration: 20210915 Granted publication date: 20180831 Pledgee: Anhui Ma'anshan Rural Commercial Bank Co.,Ltd. Pledgor: ANHUI ZHONGHUI REFRIGERATION Co.,Ltd. Registration number: Y2021980009409 |
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