CN104384411A - Magnesium alloy slab ingot forging and rolling process - Google Patents
Magnesium alloy slab ingot forging and rolling process Download PDFInfo
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- CN104384411A CN104384411A CN201410506924.9A CN201410506924A CN104384411A CN 104384411 A CN104384411 A CN 104384411A CN 201410506924 A CN201410506924 A CN 201410506924A CN 104384411 A CN104384411 A CN 104384411A
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Abstract
The invention relates to a magnesium alloy slab ingot forging and rolling process in the technical field of magnesium alloy slab ingot forging and rolling. According to the process, a magnesium alloy slab ingot is subjected to corresponding temperature rising treatment, then, the magnesium alloy slab ingot is placed at a position, corresponding to a hammer, in a forging press, the hammer descends at a speed being 150 to 170mm/min to forge and press the magnesium alloy slab ingot, after the forging completion of one surface, the magnesium alloy slab ingot is moved out and is heated to 460+/-10 DEG C, then, the surface is turned over, the other surface of the magnesium alloy slab ingot is forged and pressed until the forging of the surface is completed, and the steps are repeated until the magnesium alloy slab ingot is forged and rolled to the required thickness. The process has the advantage that the forging and rolling finished product rate of the magnesium alloy slab ingot can be effectively improved.
Description
[technical field]
The present invention relates to magnesium alloy forging rolling technical field, especially relate to a kind of forging rolling technique being applied to magnesium alloy slab ingot.
[background technology]
Known, because magnesium alloy not only has good corrosion-resistant, room temperature mechanics and higher tension and compression yield strength, but also there is high-temperature instantaneous intensity and good shaping and welding performance, and serviceability temperature≤150 DEG C, therefore, it is generally used for making aircraft skin, hatch door, wallboard, long purlin, the rocking arm of operating system, bearing, guided missile covering and aerospace structural member etc.; But, in actual applications, owing to needing the density and the intensity that are improved magnesium alloy by forging rolling, and preheating time in forging rolling process, preheat temperature, the technique such as forging rolling progress and Speed of Forging Hammer all require higher, therefore, the forging rolling yield rate of existing magnesium alloy slab ingot is very low.
[summary of the invention]
In order to overcome the deficiency in background technology, the invention discloses a kind of magnesium alloy slab ingot forging rolling technique, described technique effectively can improve the forging rolling yield rate of magnesium alloy slab ingot.
For achieving the above object, the present invention adopts following technical scheme:
A kind of magnesium alloy slab ingot forging rolling technique, described processing step is as follows:
A, first stage: utilize heating furnace, in 60 min, the magnesium alloy slab ingot through overaging is at the uniform velocity warming up to 250 ± 10 DEG C by room temperature, be then incubated 90 min; Second stage: in 60 min, magnesium alloy slab ingot is at the uniform velocity warming up to 400 ± 10 DEG C by 250 ± 10 DEG C, is then incubated 60 min; Phase III: in 20 min, magnesium alloy slab ingot is at the uniform velocity warming up to 460 ± 10 DEG C by 400 ± 10 DEG C, be then incubated 240 min;
B, live the high-strength steel sheet supporting with the size of magnesium alloy slab ingot, weight by a large manipulator clamping, and the steel ingot being 1000 DEG C by a deblocking temperature is placed on the steel plate folded by large manipulator, then large manipulator is utilized to put to the tup of reduce roll machine by high temperature steel ingot, now, tup correspondence is dropped to above high temperature steel ingot carry out preheating; When the temperature of tup reaches 300 DEG C, rising tup, removes large manipulator fast simultaneously, and is removed fast by high temperature steel ingot;
C, by a gadget hand heat up after magnesium alloy slab ingot move on on the steel plate of large manipulator, requiring that the upper and lower surface carbon dust of magnesium alloy slab ingot does and lubricate, requiring to lay magnesium alloy slab ingot at once when removing high temperature steel ingot simultaneously;
D, by large manipulator, the magnesium alloy slab ingot on steel plate is placed on the position of corresponding tup, then tup is declined with the speed of 1min150 ~ 170mm and magnesium alloy slab ingot is forged and pressed; Tup has has often forged and pressed and has once just risen fast, and large manipulator advances 120 ~ 130mm simultaneously, and then forges and presses with tup; Repeat above-mentioned action until a face of magnesium alloy slab ingot has been forged; Require that the temperature of magnesium alloy slab ingot lower than 380 DEG C, otherwise must not forge and press after needing heating again;
Face forging and stamping of E, magnesium alloy slab ingot are complete, are heated to 460 ± 10 DEG C, and then turn out, forge and press another face of magnesium alloy slab ingot, until this face has been forged after being shifted out by magnesium alloy slab ingot;
F, repeat above-mentioned D, E step, until by magnesium alloy slab ingot forging rolling to the thickness needed.
Further, the magnesium alloy slab ingot applied in described technique is of a size of 200mm × 800mm.
Further, the timeliness of described magnesium alloy slab ingot need through spring, summer, autumn, the four seasons in winter.
Further, when performing the steps A of described technique, require that the temperature of heating furnace is as follows: the first stage: in 60 min, furnace temperature is at the uniform velocity warming up to 350 ± 10 DEG C by room temperature, be then incubated 60 min; Second stage: in 60 min, furnace temperature is at the uniform velocity warming up to 500 ± 10 DEG C by 350 ± 10 DEG C, is then incubated 60 min; Phase III: in 20 min, furnace temperature is at the uniform velocity warming up to 550 ± 10 DEG C by 500 ± 10 DEG C, be then incubated 240 min.
Further, during step C described in execution, when being pressed from both sides out from stove by the magnesium alloy slab ingot after heating up, insulation asbestos cloth to be placed in the upper side of magnesium alloy slab ingot.
Further, described reduce roll machine is 7000 tons of reduce roll machines, and its tup is U-shaped.
Further, a forging rolling amount of described reduce roll machine is 25 ~ 29% of magnesium alloy slab ingot thickness.
Owing to adopting technical scheme as above, the present invention has following beneficial effect:
Magnesium alloy slab ingot forging rolling of the present invention is simple for process, be convenient to enforcement of regulations, technique forging rolling magnesium alloy slab ingot described in application, not only can effectively improve forging rolling yield rate, but also the cost of magnesium alloy can be reduced accordingly because of the raising of yield rate, and then reach the object being beneficial to and promoting magnesium alloy.
[detailed description of the invention]
Can explain the present invention in more detail by the following examples, disclose object of the present invention and be intended to protect all changes and improvements in the scope of the invention, the present invention is not limited to the following examples:
Magnesium alloy slab ingot forging rolling processing step of the present invention is as follows:
A, first stage: utilize heating furnace, in 60 min, the magnesium alloy slab ingot after timeliness is at the uniform velocity warming up to 250 ± 10 DEG C by room temperature, be then incubated 90 min; Described magnesium alloy slab ingot timeliness preferably through spring, summer, autumn, the four seasons in winter, thus is beneficial to improve its hardness and intensity; Second stage: in 60 min, magnesium alloy slab ingot is at the uniform velocity warming up to 400 ± 10 DEG C by 250 ± 10 DEG C, is then incubated 60 min; Phase III: in 20 min, magnesium alloy slab ingot is at the uniform velocity warming up to 460 ± 10 DEG C by 400 ± 10 DEG C, be then incubated 240 min; It should be noted that when implementing this step, requiring that the furnace temperature of heating furnace meets following condition: the first stage: in 60 min, furnace temperature is at the uniform velocity warming up to 350 ± 10 DEG C by room temperature, being then incubated 60 min; Second stage: in 60 min, furnace temperature is at the uniform velocity warming up to 500 ± 10 DEG C by 350 ± 10 DEG C, is then incubated 60 min; Phase III: in 20 min, furnace temperature is at the uniform velocity warming up to 550 ± 10 DEG C by 500 ± 10 DEG C, be then incubated 240 min; Wherein, heating furnace all will meet the temperature requirement of magnesium alloy slab ingot in every one-phase;
B, select the reduce roll machine of 7000 tons, the high-strength steel sheet supporting with the size of magnesium alloy slab ingot, weight is lived by a large manipulator clamping, and the steel ingot being 1000 DEG C by a deblocking temperature is placed on the steel plate folded by large manipulator, then large manipulator is utilized to put to the tup of reduce roll machine by high temperature steel ingot, now, tup correspondence is dropped to above high temperature steel ingot carry out preheating; When the temperature of tup reaches 300 DEG C, rising tup, removes large manipulator fast simultaneously, and is removed fast by high temperature steel ingot;
C, by a gadget hand heat up after magnesium alloy slab ingot move on on the steel plate of large manipulator, by heat up after magnesium alloy slab ingot press from both sides out from stove time, magnesium alloy slab ingot upper side place insulation asbestos cloth, what decline to prevent its temperature is too fast; In addition, requiring that the upper and lower surface carbon dust of magnesium alloy slab ingot does and lubricate, requiring to lay magnesium alloy slab ingot at once when removing high temperature steel ingot simultaneously; Inaccurate poor if having time when namely removing high temperature steel ingot and place magnesium alloy slab ingot on steel plate;
D, by large manipulator, the magnesium alloy slab ingot on steel plate is placed on the position of corresponding tup, then tup is declined with the speed of 1min150 ~ 170mm and magnesium alloy slab ingot is forged and pressed; Tup has has often forged and pressed and has once just fast risen, namely tup to magnesium alloy slab ingot pressure once for forging once, tup is after forge once rise, and large manipulator will advance 120 ~ 130mm, and then with the forging and stamping that tup carries out next time; Repeat above-mentioned action until a face of magnesium alloy slab ingot has been forged, be together after a face of magnesium alloy slab ingot is swaged into; Require during forging and stamping that the temperature of magnesium alloy slab ingot lower than 380 DEG C, otherwise must not need heating 30 ~ 40 min, reaches after preference temperature until magnesium alloy slab ingot and forges and presses;
Face forging and stamping of E, magnesium alloy slab ingot are complete, first magnesium alloy slab ingot will be heated to 460 ± 10 DEG C, and then turn out, forge and press another face of magnesium alloy slab ingot, until this face of magnesium alloy slab ingot has also been forged;
F, be cycled to repeat above-mentioned step D and step e, until namely magnesium alloy slab ingot forging rolling is completed forging rolling to the thickness needed.
In addition, should be noted that when implementing described technique:
(1) when forging rolling, a face of magnesium alloy slab ingot is once merely able to forging rolling together, namely can not twice, the same face of forging rolling continuously, when complete one of a face forging rolling, forging rolling of turning out again together, if heating forging rolling two road, magnesium closes many slab ingots and just easily ftractures, this is because the crystal size of magnesium alloy slab ingot the inside after forging is together different, this crystal is mixed crystal easy to crack, therefore can not to of a magnesium alloy slab ingot Mian Duan bis-road; Reason is also had to be that the temperature of magnesium alloy slab ingot declines very fast, when its temperature is lower than 380 DEG C of just easy crackings; The complete first of forging rolling, heats will to during the heating of magnesium alloy forging the anti-face of forging, because forging obtains forging rolling on the other surface during forging second again;
(2) tup of the reduce roll machine used is a U-shaped, namely utilizes the arc edge of tup to carry out effective guarantee magnesium alloy slab ingot and can have certain mobility when forging rolling;
(3) reduce roll machine forging rolling amount once should be 25 ~ 29% of magnesium alloy slab ingot thickness, and must note whether forging at every turn, because once forge not saturating, just easily ftractures when lower road forging rolling.
Part not in the detailed description of the invention is prior art, therefore the present invention is not described in detail.
Claims (7)
1. a magnesium alloy slab ingot forging rolling technique, is characterized in that: described processing step is as follows:
A, first stage: utilize heating furnace, in 60 min, the magnesium alloy slab ingot through overaging is at the uniform velocity warming up to 250 ± 10 DEG C by room temperature, be then incubated 90 min; Second stage: in 60 min, magnesium alloy slab ingot is at the uniform velocity warming up to 400 ± 10 DEG C by 250 ± 10 DEG C, is then incubated 60 min; Phase III: in 20 min, magnesium alloy slab ingot is at the uniform velocity warming up to 460 ± 10 DEG C by 400 ± 10 DEG C, be then incubated 240 min;
B, live the high-strength steel sheet supporting with the size of magnesium alloy slab ingot, weight by a large manipulator clamping, and the steel ingot being 1000 DEG C by a deblocking temperature is placed on the steel plate folded by large manipulator, then large manipulator is utilized to put to the tup of reduce roll machine by high temperature steel ingot, now, tup correspondence is dropped to above high temperature steel ingot carry out preheating; When the temperature of tup reaches 300 DEG C, rising tup, removes large manipulator fast simultaneously, and is removed fast by high temperature steel ingot;
C, by a gadget hand heat up after magnesium alloy slab ingot move on on the steel plate of large manipulator, requiring that the upper and lower surface carbon dust of magnesium alloy slab ingot does and lubricate, requiring to lay magnesium alloy slab ingot at once when removing high temperature steel ingot simultaneously;
D, by large manipulator, the magnesium alloy slab ingot on steel plate is placed on the position of corresponding tup, then tup is declined with the speed of 1min150 ~ 170mm and magnesium alloy slab ingot is forged and pressed; Tup has has often forged and pressed and has once just risen fast, and large manipulator advances 120 ~ 130mm simultaneously, and then forges and presses with tup; Repeat above-mentioned action until a face of magnesium alloy slab ingot has been forged; Require that the temperature of magnesium alloy slab ingot lower than 380 DEG C, otherwise must not forge and press after needing heating again;
Face forging and stamping of E, magnesium alloy slab ingot are complete, are heated to 460 ± 10 DEG C, and then turn out, forge and press another face of magnesium alloy slab ingot, until this face has been forged after being shifted out by magnesium alloy slab ingot;
F, repeat above-mentioned D, E step, until by magnesium alloy slab ingot forging rolling to the thickness needed.
2. magnesium alloy slab ingot forging rolling technique according to claim 1, is characterized in that: the magnesium alloy slab ingot applied in described technique is of a size of 200mm × 800mm.
3. magnesium alloy slab ingot forging rolling technique according to claim 1, is characterized in that: described magnesium alloy slab ingot timeliness need through spring, summer, autumn, the four seasons in winter.
4. magnesium alloy slab ingot forging rolling technique according to claim 1, it is characterized in that: when performing the steps A of described technique, require that the temperature of heating furnace is as follows: the first stage: in 60 min, furnace temperature is at the uniform velocity warming up to 350 ± 10 DEG C by room temperature, be then incubated 60 min; Second stage: in 60 min, furnace temperature is at the uniform velocity warming up to 500 ± 10 DEG C by 350 ± 10 DEG C, is then incubated 60 min; Phase III: in 20 min, furnace temperature is at the uniform velocity warming up to 550 ± 10 DEG C by 500 ± 10 DEG C, be then incubated 240 min.
5. magnesium alloy slab ingot forging rolling technique according to claim 1, is characterized in that: during step C described in execution, when being pressed from both sides out from stove by the magnesium alloy slab ingot after heating up, will place insulation asbestos cloth in the upper side of magnesium alloy slab ingot.
6. magnesium alloy slab ingot forging rolling technique according to claim 1, is characterized in that: described reduce roll machine is 7000 tons of reduce roll machines, and its tup is U-shaped.
7. magnesium alloy slab ingot forging rolling technique according to claim 1, is characterized in that: a forging rolling amount of described reduce roll machine is 25 ~ 29% of magnesium alloy slab ingot thickness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410506924.9A CN104384411A (en) | 2014-09-28 | 2014-09-28 | Magnesium alloy slab ingot forging and rolling process |
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| CN201410506924.9A CN104384411A (en) | 2014-09-28 | 2014-09-28 | Magnesium alloy slab ingot forging and rolling process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105642804A (en) * | 2016-02-03 | 2016-06-08 | 中南大学 | Forging method for improving evenness of structures of large-size magnesium alloy forged discs |
| CN114074157A (en) * | 2020-08-13 | 2022-02-22 | 洛阳晟雅镁合金科技有限公司 | Forging process of high-strength ZK60A magnesium alloy round bar |
-
2014
- 2014-09-28 CN CN201410506924.9A patent/CN104384411A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105642804A (en) * | 2016-02-03 | 2016-06-08 | 中南大学 | Forging method for improving evenness of structures of large-size magnesium alloy forged discs |
| CN105642804B (en) * | 2016-02-03 | 2016-11-16 | 中南大学 | A kind of forging method improving large scale magnesium alloy forging cake structural homogenity |
| CN114074157A (en) * | 2020-08-13 | 2022-02-22 | 洛阳晟雅镁合金科技有限公司 | Forging process of high-strength ZK60A magnesium alloy round bar |
| CN114074157B (en) * | 2020-08-13 | 2024-02-02 | 洛阳晟雅镁合金科技有限公司 | Forging process of high-strength ZK60A magnesium alloy round bar |
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