The specific embodiment
Technical solution of the present invention is not limited to the following cited specific embodiment, also comprises any combination between each specific embodiment.
The specific embodiment one: present embodiment prepares high-fineness ratio, magnesium alloy with high strength and ductility method capillaceous realizes according to the following steps: one, magnesium alloy ingot is heated to 200~450 ℃ and insulation processing 0.5~1h, push under the condition that be 2~64 in extrusion ratio then, extrusion die drift speed is 20~30mm/s, extruded bar from magnesium alloy; Two, be annealing in process 2~8h under 200~420 ℃ of conditions with extruded bar from magnesium alloy in temperature, intercepting length is the bar of 20~50mm then, must push the capillary blank; Three, will push capillary with blank one end be processed into a base thickness degree be 2~5mm, the tube dark 8~25mm, the tube internal diameter be the cylinder of Φ 13.6~Φ 13.9mm; Four, high-strength graphite is processed into cylinder, the diameter of cylinder is to carry out interference fit under the condition of 0.02~0.08mm at the magnitude of interference with the internal diameter of tube, carries out press fit arrangement then, extrusion blank; Five, earlier extrusion die is preheated to 450 ℃, then extrusion blank is heated to 100~350 ℃ and insulation processing 0.2~0.5h, push under the condition that then be 3~169, extrusion die drift speed is 20~30mm/s in extrusion ratio, magnesium alloy extruded tube material blank; Six, the magnesium alloy at intercepting magnesium alloy extruded tube material blank two ends exposes high-strength graphite, is that the lengthening drill bit of Φ 1.6~Φ 3.0mm is cleared up the high-strength graphite in the caliber with the aperture then, must magnesium alloy capillary tubing; Seven, be annealing in process 2~8h under 200~420 ℃ of conditions with magnesium alloy capillary tubing in temperature, put into acetone-ethanol solution then and carry out ultrasonic processing 0.2~1.5h, be that 10%~20% glacial acetic acid aqueous solution is carried out pickling 10~60s with mass concentration more then, promptly get high-fineness ratio, magnesium alloy with high strength and ductility capillary; The internal diameter unanimity of cylinder tube in the diameter of dark consistent, the cylinder of cylinder tube and the step 3 in cylinder and the step 3 in the step 4 wherein; In the step 7 in acetone-ethanol solution acetone mix by 1: 1 volume ratio with absolute ethyl alcohol.
The specific embodiment two: the difference of the present embodiment and the specific embodiment one is that magnesium alloy ingot is AZ31 magnesium alloy ingot or MB15 magnesium alloy ingot in the step 1.Other step is identical with the specific embodiment one with parameter.
The specific embodiment three: present embodiment and the specific embodiment one or twos' difference is to be 10~45 in extrusion ratio in the step 1, to push under the condition that extrusion die drift speed is 22~28mm/s.Other step is identical with the specific embodiment one or two with parameter.
The specific embodiment four: present embodiment and the specific embodiment one or twos' difference is to be 30 in extrusion ratio in the step 1, to push under the condition that extrusion die drift speed is 25mm/s.Other step is identical with the specific embodiment one or two with parameter.
The specific embodiment five: the difference of the present embodiment and the specific embodiment one to four is in the step 1 magnesium alloy ingot to be heated to 250~400 ℃ also to be incubated processing 0.6~0.8h.Other step is identical with the specific embodiment one to four with parameter.
The specific embodiment six: the difference of the present embodiment and the specific embodiment one to four is in the step 1 magnesium alloy ingot to be heated to 300 ℃ also to be incubated processing 0.7h.Other step is identical with the specific embodiment one to four with parameter.
The specific embodiment seven: the difference of the present embodiment and the specific embodiment one to six is to be annealing in process 3~7h under 240~360 ℃ of conditions in temperature in the step 2.Other step is identical with the specific embodiment one to six with parameter.
The specific embodiment eight: the difference of the present embodiment and the specific embodiment one to six is to be annealing in process 4h under 300 ℃ of conditions in temperature in the step 2.Other step is identical with the specific embodiment one to six with parameter.
The specific embodiment nine: the difference of the present embodiment and the specific embodiment one to eight is that the length of intercepting bar in the step 2 is 30~40mm.Other step is identical with the specific embodiment one to eight with parameter.
The specific embodiment ten: the difference of the present embodiment and the specific embodiment one to eight is that the length of intercepting bar in the step 2 is 35mm.Other step is identical with the specific embodiment one to eight with parameter.
The specific embodiment 11: the difference of the present embodiment and the specific embodiment one to ten is that the tube base thickness degree of cylinder in the step 3 is that the internal diameter of 2.5~4.5mm, the dark 12~20mm of being of tube, tube is Φ 13.7~Φ 13.8mm.Other step is identical with the specific embodiment one to ten with parameter.
The specific embodiment 12: the difference of the present embodiment and the specific embodiment one to ten is that the tube base thickness degree of cylinder in the step 3 is that the dark internal diameter for 18mm, tube of 3mm, tube is Φ 13.75mm.Other step is identical with the specific embodiment one to ten with parameter.
The specific embodiment 13: the difference of the present embodiment and the specific embodiment one to 12 is that the magnitude of interference is 0.03~0.07mm in the step 4.Other step is identical with the specific embodiment one to 12 with parameter.
The specific embodiment 14: the difference of the present embodiment and the specific embodiment one to 12 is that the magnitude of interference is 0.05mm in the step 4.Other step is identical with the specific embodiment one to 12 with parameter.
The specific embodiment 15: the difference of the present embodiment and the specific embodiment one to 14 is to be 28~146 in extrusion ratio in the step 5, to push under the condition that extrusion die drift speed is 22~28mm/s.Other step is identical with the specific embodiment one to 14 with parameter.
The specific embodiment 16: the difference of the present embodiment and the specific embodiment one to 14 is to be 86 in extrusion ratio in the step 5, to push under the condition that extrusion die drift speed is 24mm/s.Other step is identical with the specific embodiment one to 14 with parameter.
The specific embodiment 17: the difference of the present embodiment and the specific embodiment one to 16 is in the step 5 extrusion blank to be heated to 150~300 ℃ also to be incubated processing 0.3~0.4h.Other step is identical with the specific embodiment one to 16 with parameter.
The specific embodiment 18: the difference of the present embodiment and the specific embodiment one to 16 is in the step 5 extrusion blank to be heated to 200 ℃ also to be incubated processing 0.35h.Other step is identical with the specific embodiment one to 16 with parameter.
The specific embodiment 19: the difference of the present embodiment and the specific embodiment one to 18 is that the lengthening drill bit aperture is Φ 1.8~Φ 2.6mm in the step 6.Other step is identical with the specific embodiment one to 18 with parameter.
The specific embodiment 20: the difference of the present embodiment and the specific embodiment one to 18 is that the lengthening drill bit aperture is Φ 2.4mm in the step 6.Other step is identical with the specific embodiment one to 18 with parameter.
The specific embodiment 21: the difference of the present embodiment and the specific embodiment one to 20 is to be annealing in process 4~6h under 240~360 ℃ of conditions in temperature.Other step is identical with the specific embodiment one to 20 with parameter.
The specific embodiment 22: the difference of the present embodiment and the specific embodiment one to 20 is to be annealing in process 5h under 300 ℃ of conditions in temperature.Other step is identical with the specific embodiment one to 20 with parameter.
The specific embodiment 23: the difference of the present embodiment and the specific embodiment one to 22 is that the mass concentration of glacial acetic acid aqueous solution in the step 7 is 12%~18%.Other step is identical with the specific embodiment one to 22 with parameter.
The specific embodiment 24: the difference of the present embodiment and the specific embodiment one to 22 is that the mass concentration of glacial acetic acid aqueous solution in the step 7 is 15%.Other step is identical with the specific embodiment one to 22 with parameter.
The specific embodiment 25: the difference of the present embodiment and the specific embodiment one to 24 be in the step 7 pickling time be 20~50s.Other step is identical with the specific embodiment one to 24 with parameter.
The specific embodiment 26: the difference of the present embodiment and the specific embodiment one to 24 be in the step 7 pickling time be 30s.Other step is identical with the specific embodiment one to 24 with parameter.
The specific embodiment 27: the difference of the present embodiment and the specific embodiment one to 26 be in the step 7 the ultrasonic processing time be 0.5~1.0h.Other step is identical with the specific embodiment one to 26 with parameter.
The specific embodiment 28: the difference of the present embodiment and the specific embodiment one to 26 be in the step 7 the ultrasonic processing time be 0.8h.Other step is identical with the specific embodiment one to 26 with parameter.
The specific embodiment 29: present embodiment prepares high-fineness ratio, magnesium alloy with high strength and ductility method capillaceous realizes according to the following steps: one, the AZ31 magnesium alloy ingot is heated to 220 ℃ and insulation processing 0.5h, push under the condition that be 10.56 in extrusion ratio then, extrusion die drift speed is 22mm/s, extruded bar from magnesium alloy; Two, be annealing in process 2h under 280 ℃ of conditions with extruded bar from magnesium alloy in temperature, intercepting is long then is the bar of 30mm, must push the capillary blank; Three, will push capillary with blank one end be processed into a base thickness degree be 5mm, the tube dark for 25mm, the tube an internal diameter be the cylinder of Φ 13.6mm; Four, high-strength graphite is processed into cylinder, the diameter of cylinder is to carry out interference fit under the condition of 0.05mm at the magnitude of interference with the internal diameter of tube, carries out press fit arrangement then, extrusion blank; Five, earlier extrusion die is preheated to 450 ℃, then extrusion blank is heated to 220 ℃ and insulation and handles 0.25h, push under the condition that then be 16, extrusion die drift speed is 22mm/s in extrusion ratio, magnesium alloy extruded tube material blank; Six, the magnesium alloy at intercepting magnesium alloy extruded tube material blank two ends exposes high-strength graphite, is that the lengthening drill bit of Φ 3.0mm is cleared up the high-strength graphite in the caliber with the aperture then, must magnesium alloy capillary tubing; Seven, be annealing in process 2h under 320 ℃ of conditions with magnesium alloy capillary tubing in temperature, put into acetone-ethanol solution then and carry out ultrasonic processing 0.5h, be that 10% glacial acetic acid aqueous solution is carried out pickling 25s with mass concentration more then, promptly get high-fineness ratio, magnesium alloy with high strength and ductility capillary; The internal diameter unanimity of cylinder tube in the diameter of dark consistent, the cylinder of cylinder tube and the step 3 in cylinder and the step 3 in the step 4 wherein; In the step 7 in acetone-ethanol solution acetone mix by 1: 1 volume ratio with absolute ethyl alcohol.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary are Φ 4.0 * 0.3mm.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary are 23% through recording percentage elongation, and at room temperature recording tensile strength is 240MPa, and yield strength is 150MPa.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary tissue scanning electromicroscopic photograph as shown in Figure 2, as can be seen from Figure 2 high-fineness ratio, magnesium alloy with high strength and ductility capillary surface crystal grain are tiny, even; And the magnesium alloy capillary tissue scanning electromicroscopic photograph that existing hot-extrusion method prepares as shown in Figure 1, as can be seen from Figure 1 magnesium alloy capillary surface grain size inequality.Comparison diagram 1 finds out obviously that with Fig. 2 high-fineness ratio, the magnesium alloy with high strength and ductility tissue surface capillaceous that present embodiment obtains obviously is better than the magnesium alloy capillary tissue surface that existing hot-extrusion method prepares.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary crystal grain tiny (average grain size 2 μ m).
The specific embodiment 30: present embodiment prepares high-fineness ratio, magnesium alloy with high strength and ductility method capillaceous realizes according to the following steps: one, the AZ31 magnesium alloy ingot is heated to 300 ℃ and insulation processing 0.5h, push under the condition that be 10.56 in extrusion ratio then, extrusion die drift speed is 20mm/s, extruded bar from magnesium alloy; Two, be annealing in process 4h under 400 ℃ of conditions with extruded bar from magnesium alloy in temperature, intercepting is long then is the bar of 30mm, must push the capillary blank; Three, will push capillary with blank one end be processed into a base thickness degree be 3mm, the tube dark 20mm, the tube internal diameter be the cylinder of Φ 13.9mm; Four, high-strength graphite is processed into cylinder, the diameter of cylinder is to carry out interference fit under the condition of 0.04mm at the magnitude of interference with the internal diameter of tube, carries out press fit arrangement then, extrusion blank; Five, earlier extrusion die is preheated to 450 ℃, then extrusion blank is heated to 200 ℃ and insulation and handles 0.25h, push under the condition that then be 28.4, extrusion die drift speed is 20mm/s in extrusion ratio, magnesium alloy extruded tube material blank; Six, six, the magnesium alloy at intercepting magnesium alloy extruded tube material blank two ends exposes high-strength graphite, is that the lengthening drill bit of Φ 2.8mm is cleared up the high-strength graphite in the caliber with the aperture then, must magnesium alloy capillary tubing; Seven, be annealing in process 2h under 280 ℃ of conditions with magnesium alloy capillary tubing in temperature, put into acetone-ethanol solution then and carry out ultrasonic processing 0.25h, be that 15% glacial acetic acid aqueous solution is carried out pickling 20s with mass concentration more then, promptly get high-fineness ratio, magnesium alloy with high strength and ductility capillary; The internal diameter unanimity of cylinder tube in the diameter of dark consistent, the cylinder of cylinder tube and the step 3 in cylinder and the step 3 in the step 4 wherein; In the step 7 in acetone-ethanol solution acetone mix by 1: 1 volume ratio with absolute ethyl alcohol.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary are Φ 3.0 * 0.2mm.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary are 15% through recording percentage elongation, and at room temperature recording tensile strength is 230MPa, and yield strength is 145MPa.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary crystal grain tiny (average grain size 2 μ m).
The specific embodiment 31: present embodiment prepares high-fineness ratio, magnesium alloy with high strength and ductility method capillaceous realizes according to the following steps: one, the MB15 magnesium alloy ingot is heated to 260 ℃ and insulation processing 0.5h, push under the condition that be 10.56 in extrusion ratio then, extrusion die drift speed is 22mm/s, extruded bar from magnesium alloy; Two, be annealing in process 3h under 220 ℃ of conditions with extruded bar from magnesium alloy in temperature, intercepting is long then is the bar of 30mm, must push the capillary blank; Three, will push capillary with blank one end be processed into a base thickness degree be 5mm, the tube dark 25mm, the tube internal diameter be the cylinder of Φ 13.6mm; Four, high-strength graphite is processed into cylinder, the diameter of cylinder is to carry out interference fit under the condition of 0.05mm at the magnitude of interference with the internal diameter of tube, carries out press fit arrangement then, extrusion blank; Five, earlier extrusion die is preheated to 450 ℃, then extrusion blank is heated to 220 ℃ and insulation and handles 0.4h, push under the condition that then be 16, extrusion die drift speed is 22mm/s in extrusion ratio, magnesium alloy extruded tube material blank; Six, six, the magnesium alloy at intercepting magnesium alloy extruded tube material blank two ends exposes high-strength graphite, is that the lengthening drill bit of Φ 3.0mm is cleared up the high-strength graphite in the caliber with the aperture then, must magnesium alloy capillary tubing; Seven, be annealing in process 2h under 320 ℃ of conditions with magnesium alloy capillary tubing in temperature, put into acetone-ethanol solution then and carry out ultrasonic processing 0.5h, be that 10% glacial acetic acid aqueous solution is carried out pickling 25s with mass concentration more then, promptly get high-fineness ratio, magnesium alloy with high strength and ductility capillary; The internal diameter unanimity of cylinder tube in the diameter of dark consistent, the cylinder of cylinder tube and the step 3 in cylinder and the step 3 in the step 4 wherein; In the step 7 in acetone-ethanol solution acetone mix by 1: 1 volume ratio with absolute ethyl alcohol.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary are Φ 4.0 * 0.3mm.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary are 21% through recording percentage elongation, and at room temperature recording tensile strength is 278MPa, and yield strength is 175Mpa.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary crystal grain tiny (average grain size 2 μ m).
The specific embodiment 32: present embodiment prepares high-fineness ratio, magnesium alloy with high strength and ductility method capillaceous realizes according to the following steps: one, the MB15 magnesium alloy ingot is heated to 350 ℃ and insulation processing 1h, push under the condition that be 10.56 in extrusion ratio then, extrusion die drift speed is 22mm/s, extruded bar from magnesium alloy; Two, be annealing in process 3h under 350 ℃ of conditions with extruded bar from magnesium alloy in temperature, intercepting is long then is the bar of 23mm, must push the capillary blank; Three, will push capillary with blank one end be processed into a base thickness degree be 3mm, the tube dark 20mm, the tube internal diameter be the cylinder of Φ 13.9mm; Four, high-strength graphite is processed into cylinder, the diameter of cylinder is to carry out interference fit under the condition of 0.02mm at the magnitude of interference with the internal diameter of tube, carries out press fit arrangement then, extrusion blank; Five, earlier extrusion die is preheated to 450 ℃, then extrusion blank is heated to 350 ℃ and insulation and handles 0.3h, push under the condition that then be 28.4, extrusion die drift speed is 22mm/s in extrusion ratio, magnesium alloy extruded tube material blank; Six, six, the magnesium alloy at intercepting magnesium alloy extruded tube material blank two ends exposes high-strength graphite, is that the lengthening drill bit of Φ 2.8mm is cleared up the high-strength graphite in the caliber with the aperture then, must magnesium alloy capillary tubing; Seven, be annealing in process 2h under 260 ℃ of conditions with magnesium alloy capillary tubing in temperature, put into acetone-ethanol solution then and carry out ultrasonic processing 1h, be that 10% glacial acetic acid aqueous solution is carried out pickling 15s with mass concentration more then, promptly get high-fineness ratio, magnesium alloy with high strength and ductility capillary; The internal diameter unanimity of cylinder tube in the diameter of dark consistent, the cylinder of cylinder tube and the step 3 in cylinder and the step 3 in the step 4 wherein; In the step 7 in acetone-ethanol solution acetone mix by 1: 1 volume ratio with absolute ethyl alcohol.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary are Φ 3.0 * 0.2mm.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary are 26% through recording percentage elongation, and at room temperature recording tensile strength is 328MPa, and yield strength is 254MPa.
The high-fineness ratio that present embodiment obtains, magnesium alloy with high strength and ductility capillary crystal grain tiny (average grain size 2 μ m).