CN2668290Y - Copper-wire rod continuous rolling mill - Google Patents
Copper-wire rod continuous rolling mill Download PDFInfo
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- CN2668290Y CN2668290Y CNU2004200324017U CN200420032401U CN2668290Y CN 2668290 Y CN2668290 Y CN 2668290Y CN U2004200324017 U CNU2004200324017 U CN U2004200324017U CN 200420032401 U CN200420032401 U CN 200420032401U CN 2668290 Y CN2668290 Y CN 2668290Y
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Abstract
The utility model discloses a copper-wire rod continuous rolling mill, and the tandem rolling mechanism of the utility model has twelve machine frames in common. From one side of the feeding device (13) a number one machine frame (1) and a number two machine frame (2) are two roller type machine frames. Wherein, the number one machine frame (1) is provided with two roller type machine frames by a horizontal roller. The number two machine frame (2) is provided with two roller type machine frames by a vertical roller. From the number three to the number twelve ten machine frames (3-12) are three roller type machine frames in common. Wherein the number three, five, seven, nine and eleven machine frames (3, 5, 7, 9 and 11) are lower transmission three roller type machine frames. The number four, six, eight, ten and twelve machine frames (4, 6, 8, 10 and 12) are upper transmission three roller type machine frames. The utility model has high total compression ratio, sufficient rolling stock deformation, strong rolling power, high rolling precision, good effect, low manufacture cost, small ground occupying, good synthesis mechanical performance and good production quality.
Description
Affiliated technical field
The utility model relates to a kind of copper wire rod tandem mill, and relating in particular to a kind of ingot casting sectional area is 2000～2350mm
2The copper wire rod tandem mill.
Background technology
The copper wire rod tandem mill is the copper wire rod rolling equipment that generally uses, and existing ingot casting sectional area is 2000～2350mm
2The copper wire rod tandem mill form by single double-roller type frame or three-roller Y shaped frame.As main equipment, its investment is big, floor space is big, and energy consumption is big, and lumber recovery, line bar quality and performance are undesirable.Though domestic in recent years this type of tandem mill improves to some extent, adopted double-roller type and three-roller Y shaped frame, vertical and level and underdrive and last transmission replace the tandem rolling mechanism of arrangement combinations; But owing to fail to solve the optimum Match of speed ratio between each road draught pressure, torque, frame and copper cash base plastic deformation ability, deformation temperature, deformation velocity, bite condition, tissue characteristics etc., causing its total frame quantity is 14 pairs.Though part has shortened the unit total length, floor space reduces to some extent, and wire quality is increased, manufacturing cost descends to some extent, but overall compression ratio (total coefficient of elongation) is still on the low side, and the copper wires product quality that tandem rolling goes out is still waiting further raising, and self manufacturing cost of this tandem mill is also higher.
Summary of the invention
It is 2000～2350mm that the purpose of this utility model just provides a kind of ingot casting sectional area
2Novel copper wire rod tandem mill, the overall compression ratio of this kind tandem mill is big, the stocking distortion fully, rolling power is strong, rolling accuracy is high, effective, low cost of manufacture, floor space is little, comprehensive mechanical performance is excellent, good product quality.
The utility model solves its technical problem, the technical scheme that is adopted is: a kind of copper wire rod tandem mill, contain motor, drawing-in device, main transmission gearbox and tandem rolling mechanism, its design feature is: a, tandem rolling mechanism have ten second mate's frames, from drawing-in device one side: 1st, No. 2 two secondary frames are the double-roller type frame, wherein No. 1 frame is that horizontal roller is arranged the double-roller type frame, and No. 2 frame is that vertical roller is arranged the double-roller type frame; No. 3 to No. 12 totally ten secondary frames be three-roller Y shaped frame, the 3rd, 5,7,9, No. 11 frame three-roller Y shaped frame that is underdrive wherein, the 4th, 6,8,10, No. 12 frame is the three-roller Y shaped frame of last transmission; Speed ratio between b, No. 1 and No. 2 frame is 1.470～1.690; Speed ratio between No. 2 and No. 3, No. 3 and No. 4, No. 4 and No. 5, No. 5 and No. 6 frame, No. 6 and No. 7, No. 7 and No. 8 frame is 1.350～1.420; Speed ratio between No. 8 and No. 9, No. 9 and No. 10 frame is 1.290～1.360; Speed ratio between No. 10 and o.11, o.11 and No. 12 frame is 1.290～1.310.
Compared with prior art, the beneficial effects of the utility model are: owing to adopted rational transmission speed ratio between each frame, better distribute the lengthening coefficient of stocking between frames at different levels, brought into play the draught pressure in copper cash base plastic deformation ability and tissue characteristics and each road of tandem mill to greatest extent; Because the two roller machine frame is durable, the bigger enough power of depressing is arranged, improved the compression ratio of the 1st, 2 frames especially, make copper cash base casting brilliant broken, crystal grain obtains refinement, distortion is more abundant, rolled piece is stressed evenly, it is finer and close to organize, combination property is excellent, product quality is better.Thereby make the overall compression ratio of tandem rolling mechanism higher, rolling power is stronger, the rolling accuracy height, effective, structure is more reasonable, transmission efficiency improves, mechanical performance is better.Because whole tandem rolling mechanism has reduced by two secondary frames, floor space is little, corresponding power transmission shaft and main transmission gearbox gear have reduced two groups, and when reducing by two secondary frames, do not increase cost height, complex structure, maintenance dismounting inconvenience but compression ratio is big, the compacting ability is strong double-roller type frame, so its low cost of manufacture of the utility model, maintenance is easy to use, the long-term operation cost is low.
The roll pass of the 1st, No. 2 two above-mentioned secondary frame is that the identical roll arc groove of two symmetries surrounds, wherein the arc radius of No. 1 breast roller pass is 48.50～66.80 millimeters, the inscribed circle diameter of pass is 30.50～40.10 millimeters, and the roll arc width of groove is 66.10～82.10 millimeters; No. 2 breast roller pass arc radius is 16.10～23.50 millimeters, and the inscribed circle diameter of pass is 34.10～43.20 millimeters, and the roll arc width of groove is 35.10～44.50 millimeters;
The roll pass of No. 3～No. 12 ten secondary three-roller Y shaped frames is that three identical arcs that are mutually 120 degree central angles constitute, the roll pass arc radius is followed successively by 52.50～59.60 millimeters, 12.20～17.90 millimeters, 37.20～44.90 millimeters, 8.20～14.10 millimeters, 26.50～32.90 millimeters, 5.20～10.90 millimeters, 19.10～25.50 millimeters, 3.50～8.90 millimeters, 13.90～18.90 millimeters, 3.20～5.20 millimeters, the inscribed circle diameter of pass is followed successively by 24.30～30.70 millimeters, 23.10～29.50 millimeters, 17.10～23.10 millimeters, 16.10～22.50 millimeters, 11.10～17.60 millimeters, 11.50～17.20 millimeters, 8.10～14.10 millimeters, 8.40～14.10 millimeters, 7.10～9.10 millimeters, 7.10～8.90 millimeters, the roll arc width of groove is followed successively by 32.10～39.80 millimeters, 20.10～27.90 millimeters, 22.10～28.90 millimeters, 14.50～20.90 millimeters, 15.10～22.20 millimeters, 9.10～15.60 millimeters, 10.50～16.80 millimeters, 6.80～12.60 millimeters, 8.50～11.50 millimeters, 5.60～7.90 millimeters.
Because the roll pass arc radius of each frame, the numerical value of the roll pass inscribed circle diameter and the roll arc width of groove is interrelated.Each roll pass of the present utility model adopts above type shape and size, makes: the double-roller type frame of No. 1 horizontal roller layout rolls into elliptic jet with trapezoidal ingot casting; The double-roller type frame of No. 2 vertical roller layout rolls into circle cross section with elliptic jet; No. 3 frame rolls into the spherical triangle section with circle cross section; No. 4 frame rolls into circle cross section with the spherical triangle section, and the 5-12 frame hockets by the pass schedule mode of 3-4 frame, at last the copper cash base is rolled into circular copper wire rod output.Because the two roller machine frame is durable, and bigger enough pressure is arranged, brilliant broken casting, make grain refinement.And Y type frame has the compression of the rolled piece of making three-dimensional, and rolled piece is stressed evenly, and its deformation condition is characteristics preferably.Two rollers of this uniqueness and the rolling mode of three roller combinations are out of shape rolling the going through from big to small of copper cash base gradually, and change of shape is reasonable, and distortion fully, and is stressed even; Thereby guaranteed that further the utility model rolling power is strong, precision is high, excellent, the good product quality of performance.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the assembling schematic front view of the utility model embodiment.
Fig. 2 is the assembling diagrammatic top view of the utility model embodiment.
Fig. 3 is No. the 1st, the utility model embodiment (horizontal roller layout double-roller type) breast roller pass enlarged diagram.
Fig. 4 is No. the 2nd, the utility model embodiment (vertical roller layout double-roller type) breast roller pass enlarged diagram.
Fig. 5 is the 3rd, 5,7,9, No. 11 (underdrive is three-roller Y shaped) breast rollers of the utility model embodiment pass enlarged diagram.
Fig. 6 is No. the 4th, 6,8,10,12, the utility model embodiment (it is three-roller Y shaped to go up transmission) breast roller pass enlarged diagrams.
The specific embodiment
Embodiment one:
Fig. 1, Fig. 2 illustrate, and a kind of specific embodiment of the present utility model is: a kind of copper wire rod tandem mill, contain motor (15), drawing-in device (13), main transmission gearbox (14) and tandem rolling mechanism.Tandem rolling mechanism has ten second mate's frames, and from drawing-in device (13) one sides: 1st, No. 2 two secondary frames (1,2) are the double-roller type frame, and wherein No. 1 frame (1) is that horizontal roller is arranged the double-roller type frame, and No. 2 frame (2) is vertical roller layout double-roller type frame; No. 3 to No. 12 totally ten secondary frames (3～12) be three-roller Y shaped frame, wherein the 3rd, 5,7,9, No. 11 frame (3,5,7,9,11) is the three-roller Y shaped frame of underdrive, and the 4th, 6,8,10, No. 12 frame (4,6,8,10,12) is the three-roller Y shaped frame of last transmission;
So-called underdrive frame is meant that the power that the main transmission gearbox transmission comes at first passes to three-roller Y shaped frame lower horizontal roll, is passed to two rolls of top again by the bevel gear of the two pairs 60 degree angles of cut.When underdrive, the layout of three rolls is similar in appearance to letter " Y " (three-roller Y shaped gain the name thus).The the 3rd, 5,7,9, No. 11 breast roller pass schematic diagram of Fig. 5 also shown three roller distribution situations of this kind frame.
Be meant that the next power of main transmission gearbox transmission at first passes to the horizontal roll of top and go up the driver frame, pass to two rolls of below again by the bevel gear of the two pairs 60 degree angles of cut.The roll of top be positioned at this frame in addition two rolls directly over, three rollers " the fall Y " shape (also being called three-roller Y shaped) that distributes actual being.The the 4th, 6,8,10, No. 12 breast roller pass schematic diagram of Fig. 6 also shown three roller distribution situations of this kind frame.
Speed ratio between No. 1 (1) and No. 2 frame (2) is 1.475; Speed ratio between No. 2 (2) and No. 3 (3), No. 3 (3) and No. 4, No. 4 (4) and No. 5 (5), No. 5 (5) and No. 6 frame (6), No. 6 (6) and No. 7 (7), No. 7 (7) and No. 8 frame (8) is 1.357; Speed ratio between No. 8 (8) and No. 9 (9), No. 9 (9) and No. 10 (10), No. 10 (10) and o.11 (11), o.11 (11) and No. 12 (12) frame is 1.302.
Fig. 3, Fig. 4 illustrate, the roll pass of the 1st, No. 2 two secondary frame (1,2) of present embodiment is that the identical roll arc groove of two symmetries surrounds, wherein the arc radius (R) of No. 1 breast roller pass is 48.50～54.60 millimeters, the inscribed circle diameter of pass (D) is 30.50～34.50 millimeters, and the roll arc width of groove (B) is 66.10～74.20 millimeters; No. 2 frame (2) roll pass arc radius (R) is 16.10～20.50 millimeters, and the inscribed circle diameter of pass (D) is 34.10～38.50 millimeters, and the roll arc width of groove (B) is 35.10～40.16 millimeters;
Fig. 5, Fig. 6 illustrates, the roll pass of No. 3～No. 12 ten secondary three-roller Y shaped frames (3～12) of present embodiment is that three identical arcs that are mutually 120 degree central angles constitute, roll pass arc radius (R) is followed successively by 52.50～57.60 millimeters, 12.20～16.50 millimeters, 37.20～42.30 millimeters, 8.20～13.40 millimeters, 26.50～31.60 millimeters, 5.20～10.40 millimeters, 19.10～24.50 millimeters, 3.50～8.50 millimeters, 13.90～18.90 millimeters, 3.20～5.20 millimeters, the inscribed circle diameter of pass (D) is followed successively by 24.30～29.50 millimeters, 23.10～28.30 millimeters, 17.10～22.10 millimeters, 16.10～21.50 millimeters, 11.10～16.80 millimeters, 11.50～16.50 millimeters, 8.10～13.40 millimeters, 8.40～13.40 millimeters, 7.10～9.10 millimeters, 7.10～8.90 millimeters, the roll arc width of groove (B) is followed successively by 32.10～37.50 millimeters, 20.10～25.80 millimeters, 22.10～27.50 millimeters, 14.50～19.50 millimeters, 15.10～20.50 millimeters, 9.10～14.90 millimeters, 10.50～15.9 millimeters, 6.80～11.80 millimeters, 8.50～11.50 millimeters, 5.60～7.90 millimeters.
Embodiment two
What present embodiment and embodiment one were different only is:
Speed ratio between No. 1 (1) and No. 2 frame (2) is 1.676;
The arc radius (R) of No. 1 breast roller pass is 51.90～58.50 millimeters, and the inscribed circle diameter of pass (D) is 32.60～36.90 millimeters, and the roll arc width of groove (B) is 70.70～79.40 millimeters.
Remaining structure of present embodiment is identical with embodiment one with composition.
Embodiment three
What present embodiment and embodiment one were different only is:
Speed ratio between No. 1 (1) and No. 2 frame (2) is 1.538;
The arc radius (R) of No. 1 breast roller pass is 49.50～55.70 millimeters, and the inscribed circle diameter of pass (D) is 31.10～35.20 millimeters, and the roll arc width of groove (B) is 67.40～75.80 millimeters;
Remaining structure of present embodiment is identical with embodiment one with composition.
Embodiment four
What present embodiment and embodiment one were different only is:
Speed ratio between No. 1 (1) and No. 2 frame (2) is 1.605;
The arc radius (R) of No. 1 breast roller pass is 50.50～56.80 millimeters, and the inscribed circle diameter of pass (D) is 31.80～35.90 millimeters, and the roll arc width of groove (B) is 68.80～77.20 millimeters;
Remaining structure of present embodiment is identical with embodiment one with composition.
Embodiment five
Speed ratio between each frame of present embodiment and each breast roller pass parameter are:
Speed ratio between No. 1 (1) and No. 2 frame (2) is 1.475; Speed ratio between No. 2 (2) and No. 3 (3), No. 3 (3) and No. 4, No. 4 (4) and No. 5 (5), No. 5 (5) and No. 6 (6), No. 6 (6) and No. 7 (7), No. 7 (7) and No. 8 (8), No. 8 (8) and No. 9 (9), No. 9 (9) and No. 10 (10) frame is 1.357; Speed ratio between No. 10 (10) and o.11 (11), o.11 (11) and No. 12 (12) frame is 1.302.
The arc radius (R) of No. 1 breast roller pass is 50.40～56.80 millimeters, and the inscribed circle diameter of pass (D) is 31.70～35.90 millimeters, and the roll arc width of groove (B) is 68.70～77.20 millimeters; No. 2 frame (2) roll pass arc radius (R) is 16.70～23.50 millimeters, and the inscribed circle diameter of pass (D) is 35.50～43.20 millimeters, and the roll arc width of groove (B) is 36.50～44.50 millimeters;
The roll pass of No. 3～No. 12 ten secondary three-roller Y shaped frames (3～12) is three and is mutually three sections identical arcs formations of 120 degree central angles, roll pass arc radius (R) is followed successively by 54.10～59.60 millimeters, 12.70～17.90 millimeters, 38.70～44.90 millimeters, 8.60～14.10 millimeters, 27.60～32.90 millimeters, 5.50～10.90 millimeters, 19.90～25.50 millimeters, 3.60～8.90 millimeters, 13.90～18.90 millimeters, 3.20～5.20 millimeters, the inscribed circle diameter of pass (D) is followed successively by 25.30～30.70 millimeters, 24.10～29.50 millimeters, 17.80～23.10 millimeters, 16.80～22.50 millimeters, 11.50～17.60 millimeters, 12.10～17.20 millimeters, 8.50～14.10 millimeters, 8.70～14.10 millimeters, 7.10～9.10 millimeters, 7.10～8.90 millimeters, flute profile developed width (B) is followed successively by 33.40～39.80 millimeters, 21.10～27.90 millimeters, 23.10～28.90 millimeters, 15.10～20.90 millimeters, 15.80～22.20 millimeters, 9.50～15.60 millimeters, 11.10～16.80 millimeters, 7.10～12.60 millimeters, 8.50～11.50 millimeters, 5.60～7.90 millimeters.
Remaining structure of present embodiment is identical with embodiment one with composition.
Embodiment six
What present embodiment and embodiment five were different only is:
Speed ratio between No. 1 (1) and No. 2 frame (2) is 1.538;
The arc radius (R) of No. 1 breast roller pass is 51.40～58.10 millimeters, and the inscribed circle diameter of pass (D) is 32.30～36.80 millimeters, and the roll arc width of groove (B) is 70.10～78.80 millimeters.
Remaining structure of present embodiment is identical with embodiment five with composition.
Embodiment seven
What present embodiment and embodiment five were different only is:
Speed ratio between No. 1 (1) and No. 2 frame (2) is 1.605;
The arc radius (R) of No. 1 breast roller pass is 52.40～59.40 millimeters, and the inscribed circle diameter of pass (D) is 32.90～37.40 millimeters, and the roll arc width of groove (B) is 71.40～80.30 millimeters.
Remaining structure of present embodiment is identical with embodiment five with composition.
Embodiment eight
What present embodiment and embodiment five were different only is:
Speed ratio between No. 1 (1) and No. 2 frame (2) is 1.676;
The arc radius (R) of No. 1 breast roller pass is 53.90～66.80 millimeters, and the inscribed circle diameter of pass (D) is 33.90～40.10 millimeters, and the roll arc width of groove (B) is 73.50～82.10 millimeters.
Remaining structure of present embodiment is identical with embodiment five with composition.
The utility model is applicable to that the ingot casting sectional area is 2000～2350mm
2Trapezoidal copper ingot, going out shank diameter is φ 8mm, hourly output is the copper wire rod tandem mill of 11--19 ton.
Claims (2)
1, a kind of copper wire rod tandem mill contains motor (15), drawing-in device (13), main transmission gearbox (14) and tandem rolling mechanism, it is characterized in that:
A, tandem rolling mechanism have ten second mate's frames, from drawing-in device (13) one sides: 1st, No. 2 two secondary frames (1,2) are the double-roller type frame, wherein No. 1 frame (1) arranged the double-roller type frame for horizontal roller, and No. 2 frame (2) arranged the double-roller type frame for vertical roller; No. 3 to No. 12 totally ten secondary frames (3～12) be three-roller Y shaped frame, wherein the 3rd, 5,7,9, No. 11 frame (3,5,7,9,11) is the three-roller Y shaped frame of underdrive, and the 4th, 6,8,10, No. 12 frame (4,6,8,10,12) is the three-roller Y shaped frame of last transmission;
Speed ratio between b, No. 1 (1) and No. 2 frame (2) is 1.470～1.690; Speed ratio between No. 2 (2) and No. 3 (3), No. 3 (3) and No. 4 (4), No. 4 (4) and No. 5 (5), No. 5 (5) and No. 6 frame (6), No. 6 (6) and No. 7 (7), No. 7 (7) and No. 8 frame (8) is 1.350～1.420; Speed ratio between No. 8 (8) and No. 9 (9), No. 9 (9) and No. 10 (10) frame is 1.290～1.360; Speed ratio between No. 10 (10) and o.11 (11), o.11 (11) and No. 12 (12) frame is 1.290～1.310.
2, copper wire rod tandem mill according to claim 1 is characterized in that:
The roll pass of a, the 1st, No. 2 two secondary frames (1,2) is that the identical roll arc groove of two symmetries surrounds, wherein the arc radius (R) of No. 1 breast roller pass is 48.50～66.80 millimeters, the inscribed circle diameter of pass (D) is 30.50～40.10 millimeters, and the roll arc width of groove (B) is 66.10～82.10 millimeters; No. 2 frame (2) roll pass arc radius (R) is 16.10～23.50 millimeters, and the inscribed circle diameter of pass (D) is 34.10～43.20 millimeters, and the roll arc width of groove (B) is 35.10～44.50 millimeters;
B, the roll pass of No. 3～No. 12 ten secondary three-roller Y shaped frames (3～12) is that three identical arcs that are mutually 120 degree central angles constitute, roll pass arc radius (R) is followed successively by 52.50～59.60 millimeters, 12.20～17.90 millimeters, 37.20～44.90 millimeters, 8.20～14.10 millimeters, 26.50～32.90 millimeters, 5.20～10.90 millimeters, 19.10～25.50 millimeters, 3.50～8.90 millimeters, 13.90～18.90 millimeters, 3.20～5.20 millimeters, the inscribed circle diameter of pass (D) is followed successively by 24.30～30.70 millimeters, 23.10～29.50 millimeters, 17.10～23.10 millimeters, 16.10～22.50 millimeters, 11.10～17.60 millimeters, 11.50～17.20 millimeters, 8.10～14.10 millimeters, 8.40～14.10 millimeters, 7.10～9.10 millimeters, 7.10～8.90 millimeters, the roll arc width of groove (B) is followed successively by 32.10～39.80 millimeters, 20.10～27.90 millimeters, 22.10～28.90 millimeters, 14.50～20.90 millimeters, 15.10～22.20 millimeters, 9.10～15.60 millimeters, 10.50～16.80 millimeters, 6.80～12.60 millimeters, 8.50～11.50 millimeters, 5.60～7.90 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200324017U CN2668290Y (en) | 2004-01-04 | 2004-01-04 | Copper-wire rod continuous rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200324017U CN2668290Y (en) | 2004-01-04 | 2004-01-04 | Copper-wire rod continuous rolling mill |
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| CN2668290Y true CN2668290Y (en) | 2005-01-05 |
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| CNU2004200324017U Expired - Fee Related CN2668290Y (en) | 2004-01-04 | 2004-01-04 | Copper-wire rod continuous rolling mill |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564733A (en) * | 2009-05-11 | 2009-10-28 | 秦建平 | Equipment for rolling metal rod wire |
| CN102989762A (en) * | 2012-11-09 | 2013-03-27 | 江苏熙友磁电科技有限公司 | Copper rod rolling mill |
| CN104263968A (en) * | 2014-09-28 | 2015-01-07 | 江苏中容铜业有限公司 | Production line for producing copper wire rods |
| CN107321788A (en) * | 2017-08-17 | 2017-11-07 | 四川煤田地质局四机械厂 | A kind of milling train and its milling method |
| CN116078810A (en) * | 2023-02-17 | 2023-05-09 | 科城精铜(广州)有限公司 | Rolling device and method for improving tensile strength of copper rod |
-
2004
- 2004-01-04 CN CNU2004200324017U patent/CN2668290Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564733A (en) * | 2009-05-11 | 2009-10-28 | 秦建平 | Equipment for rolling metal rod wire |
| CN102989762A (en) * | 2012-11-09 | 2013-03-27 | 江苏熙友磁电科技有限公司 | Copper rod rolling mill |
| CN104263968A (en) * | 2014-09-28 | 2015-01-07 | 江苏中容铜业有限公司 | Production line for producing copper wire rods |
| CN104263968B (en) * | 2014-09-28 | 2016-06-22 | 江苏中容铜业有限公司 | Production line for producing copper wire rods |
| CN107321788A (en) * | 2017-08-17 | 2017-11-07 | 四川煤田地质局四机械厂 | A kind of milling train and its milling method |
| CN116078810A (en) * | 2023-02-17 | 2023-05-09 | 科城精铜(广州)有限公司 | Rolling device and method for improving tensile strength of copper rod |
| CN116078810B (en) * | 2023-02-17 | 2023-11-07 | 科城精铜(广州)有限公司 | Rolling device and method for improving tensile strength of copper rod |
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