CN103470873A - Special steel pipe for CO2 (carbon dioxide) air conditioner compressor casing and processing process of special steel pipe - Google Patents
Special steel pipe for CO2 (carbon dioxide) air conditioner compressor casing and processing process of special steel pipe Download PDFInfo
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- CN103470873A CN103470873A CN2013104268734A CN201310426873A CN103470873A CN 103470873 A CN103470873 A CN 103470873A CN 2013104268734 A CN2013104268734 A CN 2013104268734A CN 201310426873 A CN201310426873 A CN 201310426873A CN 103470873 A CN103470873 A CN 103470873A
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Abstract
The invention relates to a special steel pipe for a CO2 (carbon dioxide) air conditioner compressor casing and a processing process of the special steel pipe. The processing method comprises the following process steps that steel coils are sheared into required steel belts according to specifications; the steel belts are subjected to leveling through a leveling machine after entering a machine unit production line, the smoothness is +/-0.30mm, and the two sides of the steel belts are respectively subjected to 60-degree planing and shaping; the welding current is regulated, and the current is controlled to be between 550A and 650A; the welding speed is controlled to be 30meter/minute to 35meter/minute; a heat affecting region is lengthened, and a welding opening angle is enlarged; the steel belts are formed into steel pipes by adopting a multi-roller extruding device; welding seams are formed at the welding points; the steel pipes are naturally cooled through air and are cooled through water after the welding, the steel pipes enter a correcting region, the roundness of the special steel pipes can be ensured, and the appearance dimension requirements are met. The special steel pipe and the processing process have the advantages that the roundness of the welding steel pipe casing and the tightness of the welding seams can be ensured, the welding seams can bear the maximum intensity pressure greater than or equal to 30Mpa, the production process is simple, the productivity can be improved, the manufacturing finished product rate is high, raw materials can be saved, the appearance is smooth and attractive, the quality can be improved, and the cost can also be reduced.
Description
Technical field
The present invention relates to a kind of CO
2refrigeration air conditioner compressor main casing special steel pipe and processing technology thereof are specifically that family expenses, business air conditioner adopt CO
2the special steel pipe of the air condition compressor of refrigeration agent.
Background technique
In prior art, the refrigeration agent that air condition compressor adopts is R
12-R
22, in September, 2007, Montreal protocol was promulgated in international air-conditioning meeting, time limit is eliminated and was used poisonous, harmful refrigeration agent R in the past
12-R
22.
CO
2optimize refrigeration agent, CO as natural environmental-protective
2for nontoxic, to depletion of the ozone layer potential, be zero.It is the best refrigeration agent that international air conditioner industry is generally acknowledged.
But, for air conditioner compressor housing, bringing higher quality requirement, housing must bear higher pressure, and to bear pressure be 2.5-4.2Mpa to air conditioner compressor housing in the past, and Strengh testing pressure is 6.0-10.5Mpa, and CO
2air conditioner compressor housing must bear 10Mpa, and Strengh testing pressure is 30Mpa, as seen the quality requirement of housing special steel pipe is increased substantially, and the production of welded steel pipe has been brought to new problem.
Because of CO
2the exhaust pressure of the necessary bearing high strength of compressor housing, thickness of pipe wall was 2.5-6.0mm in the past.CO
2air conditioner compressor housing outer diameter of steel pipes used is Φ 120-Φ 219mm, and wall thickness is 6.5-9.5mm, otherwise weld seam and material all hold superpower pressure that can't stand 30Mpa.
Air conditioner compressor housing is made, in the past by several making methods:
1. deep-draw moulding, but to plate thicken and the rising of housing height just is difficult to make;
2. material is rolled into single cylindrical shell and welds, but it is very difficult that Thick Plate Bending is rolled into to cylindrical shell, and the welding slag of weld weld seam is difficult to cleaning;
3. carry out turning machine shaping with seamless steel pipe, cost is expensive and time-consuming, can not meet batch production.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of CO is provided
2air conditioner compressor housing special steel pipe and processing technology thereof, this steel-pipe construction production technology is simple, and constant product quality can improve yield rate, and overall cost obviously reduces.
According to technological scheme provided by the invention, CO
2the air conditioner compressor housing special steel pipe, comprise steel pipe, by steel band, at the high frequency welding unit, is rolled into required steel pipe.
Steel pipe outside weld height is≤±-0.03mm, the inside weld height is ± 0.00/0.20mm;
Described steel pipe length is 5-7m; Described thickness of steel pipe is 6.5-9.5mm, and described steel pipe manufacturing becomes air conditioner compressor housing, is highly 300-450mm.
A kind of CO of the present invention
2the processing method of air conditioner compressor housing special steel pipe; Comprise following process step:
1, select the rolled steel plate material to be: SS400, the allowance control of its thickness is at ± 0.10mm, and the rolled steel plate surface quality is smooth, smooth, without scar;
2, coil of strip is cut into to needed steel band in accordance with regulations; Width of steel band: 360-680mm;
3, after steel band enters the unit production line, by straightener roll, steel band is smoothed, be controlled at ± 0.30mm of steel plate flatness makes steadily cans of steel band;
4, enter the production unit at steel band and the steel band both sides are become respectively to 60 ° of planings, guarantee welding quality;
5, adjust welding current, Current Control is between 550-650A; Adjusting welding speed makes welding speed be controlled at 30-35m/min;
6, extend hot shadow zone, increase the welding angular aperture, make the steel band two limits energy uniform well-burnts of welding, prevent from occurring the cold welding phenomenon when welding; Described welding angular aperture is 4o-6 o; Heating Zone Temperature: 1100 °-1200 °;
7, adopt the Multi-roller extruding device to be shaped to steel pipe: at soldering point, to form weld seam;
8, after the welding, steel pipe is cooling through the air natural of 50m, and water cooling is added and grown to 10m by 5m, and steel pipe enters correcting area thus, guarantees the roundness of its special steel pipe, described steel pipe ovality≤0.25mm, and described steel pipe bears pressure >=30Mpa; Reach the requirement of external dimension.
Compared with the prior art the present invention has the following advantages:
New structure of the present invention is simple, rationally; Can guarantee the roundness of welded steel pipe housing, the density of weld seam, soldered energy bearing high strength pressure >=30Mpa; Simultaneously, can guarantee roundness and specific elongation that expanding technique that the housing steel pipe adopts when producing compressor must reach, and guarantee that weld seam, when bearing exhaust pressure 30Mpa, does not produce crack, cause the bad phenomenon such as Leakage Gas.Production technology of the present invention is simple, can increase productivity, and the making yield rate is high, can save raw material, and outward appearance, smooth and beautiful appearance, can improve quality, can reduce costs again.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is that the present invention processes the welding schematic diagram.
Embodiment
Following the present invention is further described in connection with the embodiment in accompanying drawing:
As shown in Figure 1, comprise steel pipe 1, steel pipe seam 2.
The high-quality rolled steel plate SS400 that the present invention adopts Baosteel to produce, the allowance control of its thickness is at ± 0.10mm, and the rolled steel plate surface quality is smooth, smooth, without scar.The width in accordance with regulations by coil of strip, be cut into needed steel band, adopts and be welded into steel pipe in joint, steel band both sides 6, in high-frequency welder composing type district, is rolled into the needed steel pipe of housing.
A kind of CO
2the processing method of air conditioner compressor housing special steel pipe; Comprise following process step:
1, select the rolled steel plate material to be: SS400, the allowance control of its thickness is at ± 0.10mm, and the rolled steel plate surface quality is smooth, smooth, without scar;
2, coil of strip is cut into to needed steel band in accordance with regulations; Width of steel band: 360-680mm;
3, after steel band enters the unit production line, at first by straightener roll, steel band is smoothed, be controlled at ± 0.30mm of steel plate flatness makes steadily cans of steel band;
4, shown in Fig. 1, enter the production unit at steel band and the steel band both sides are become respectively to 60 ° of planings, guarantee welding quality;
5, suitably adjust welding current, be controlled between 550-650A; Adjusting welding speed makes welding speed be controlled at 30-35m/min;
6, shown in Fig. 2, extend hot shadow zone (heating-up zone) 3, increase welding angular aperture 4, make the steel band two limits energy uniform well-burnts of welding, prevent from " cold welding " phenomenon occurring when welding, affect weld seam, cause waste product; Described welding angular aperture is 4o-6 o; Heating Zone Temperature: 1100 °-1200 °;
7, adopt Multi-roller extruding device 5 shaping steel tubes 1, at soldering point 6, form weld seam; Endoporus is removed welding slag;
8, after the welding, steel pipe 1 is cooling through the air natural of 50m, and water cooling is added and grown to 10m by 5m, and steel pipe enters " sizing " correcting area thus, guarantees the roundness of its special steel pipe, and at the high-frequency welder composing type, district is rolled into needed steel tube body; The steel pipe external dimension are product external diameter+0.80-1.00mm, enter the sizing section of unit, product is carried out to the cylindrical correction and reach product external diameter ± 0.30mm.
Described steel tube body length is 5-7m; Described steel tube body wall thickness is 6.5-9.5mm, described steel tube body ovality≤0.30mm, and described steel tube body is born pressure >=30Mpa; Described steel pipe housing height is 300-450mm.
The present invention is for meeting CO
2the superpower pressure that air conditioner compressor housing bears, when Strengh testing pressure is 30Mpa, the test started continuously through 600,000 circulations, weld joint must not seepage, to the quality requirement of welding, is very high; For CO
2the requirement of the housing of air condition compressor, it mainly adopts coil of strip to cut across itemize to become steel band, by the ratio-frequency welded tube unit, directly be welded into steel pipe; This steel-pipe construction production technology is simple, and constant product quality can improve yield rate, and overall cost obviously reduces.Can be widely used in family expenses, 4 of business air conditioners---10 " CO
2air condition compressor ".
Claims (4)
1. a CO
2the air conditioner compressor housing special steel pipe is characterized in that: comprise steel pipe, by steel band, in high-frequency welder composing type district, be rolled into required steel pipe; Be formed with weld seam through welding on steel pipe;
Steel pipe outside weld height is≤±-0.03mm, the inside weld height is ± 0.00/0.20mm;
Described steel pipe length is 5-7m; Described thickness of steel pipe is 6.5-9.5mm, and described steel pipe height is 300-450mm.
2. a CO
2the processing method of air conditioner compressor housing special steel pipe; It is characterized in that: comprise following process step:
(1), select the rolled steel plate material to be: SS400, the allowance control of its thickness is at ± 0.10mm, the rolled steel plate surface quality is smooth, smooth, without scar;
(2), coil of strip is cut into to needed steel band in accordance with regulations; Width of steel band: 360-680mm;
(3), after steel band enters the unit production line, by straightener roll, steel band is smoothed, be controlled at ± 0.30mm of steel plate flatness makes steadily cans of steel band;
(4), entering the production unit at steel band becomes respectively 60 ° of planings to the steel band both sides, the assurance welding quality;
(5), adjust welding current, Current Control is between 550-650A; Adjust welding speed, welding speed is controlled at 30-35m/min;
(6), extend hot shadow zone, strengthen the welding angular aperture, make steel band two limits of welding can uniform well-burnts, prevent from occurring the cold welding phenomenon when welding; Described welding angular aperture is 4o-6 o; Heating Zone Temperature: 1100 °-1200 °;
(7), adopt the Multi-roller extruding device to be shaped to steel pipe: at soldering point, to form weld seam; Steel pipe outside weld height is≤±-0.03mm, the inside weld height is ± 0.00/0.20mm;
(8), steel pipe is cooling through the air natural of 50m after welding, water cooling is added and is grown to 10m by 5m, and steel pipe enters correcting area thus, guarantees the roundness of its special steel pipe, described steel pipe ovality≤0.25mm, and described steel pipe bears pressure >=30Mpa; Reach the requirement of external dimension.
3. a kind of CO as claimed in claim 1
2the processing method of air conditioner compressor housing special steel pipe is characterized in that: described steel pipe is product external diameter+0.80-1.00mm in the external dimension of unit forming station, enters the sizing section of unit, product is carried out to the cylindrical correction and reach product external diameter ± 0.30mm.
4. a kind of CO as claimed in claim 2
2the processing method of air conditioner compressor housing special steel pipe is characterized in that: described steel pipe length is 5-7m; Described thickness of steel pipe is 6.5-9.5mm, and the compressor housing that described steel pipe is made is highly 300-450mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104268734A CN103470873A (en) | 2013-09-18 | 2013-09-18 | Special steel pipe for CO2 (carbon dioxide) air conditioner compressor casing and processing process of special steel pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104268734A CN103470873A (en) | 2013-09-18 | 2013-09-18 | Special steel pipe for CO2 (carbon dioxide) air conditioner compressor casing and processing process of special steel pipe |
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|---|---|
| CN103470873A true CN103470873A (en) | 2013-12-25 |
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|---|---|---|---|
| CN2013104268734A Pending CN103470873A (en) | 2013-09-18 | 2013-09-18 | Special steel pipe for CO2 (carbon dioxide) air conditioner compressor casing and processing process of special steel pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826131A (en) * | 2017-02-28 | 2017-06-13 | 云南昆钢新型复合材料开发有限公司 | The tubulation apparatus and its method of straight-seam pipes are combined in a kind of stainless steel composite material |
| WO2017125070A1 (en) * | 2016-01-20 | 2017-07-27 | 浙江三花智能控制股份有限公司 | Pipe body, pipe and method of making pipe |
| CN108890087A (en) * | 2018-06-28 | 2018-11-27 | 山西太钢不锈钢股份有限公司 | A kind of welding method of S32750 super-duplex stainless steel welded tube |
| CN112171192A (en) * | 2020-09-22 | 2021-01-05 | 合肥凯琳制冷设备有限公司 | Production process of air-conditioning compressor shell assembly |
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| CN112171192A (en) * | 2020-09-22 | 2021-01-05 | 合肥凯琳制冷设备有限公司 | Production process of air-conditioning compressor shell assembly |
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Application publication date: 20131225 |