CN108213843A - A kind of 2219 aluminum alloy C-shaped section rings process for manufacturing forging - Google Patents
A kind of 2219 aluminum alloy C-shaped section rings process for manufacturing forging Download PDFInfo
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- CN108213843A CN108213843A CN201611154601.3A CN201611154601A CN108213843A CN 108213843 A CN108213843 A CN 108213843A CN 201611154601 A CN201611154601 A CN 201611154601A CN 108213843 A CN108213843 A CN 108213843A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The present invention provides a kind of 2219 aluminum alloy C-shaped section rings process for manufacturing forging, and including sawing, quenching treatment, jumping-up, punching, saddle support reaming obtain rectangle ring billet；Special-shaped ring billet makes and forging making step.2219 aluminium alloy abnormity rings are produced using this manufacturing method, since forging shape is closer to part, can more keep forging streamline complete, and subsequent allowance is small, the period of processing is short, and stock utilization is high.And ring is complete annulus in itself, and interior tissue is uniform, is not required to be welded, so as to solve the problems, such as the histological difference of plank curling welding and deformation.Simultaneously by increasing quenching and temper, mechanical properties and Brinell hardness are increased.
Description
Technical field
The present invention relates to forging production field, especially a kind of 2219 aluminum alloy C-shaped section rings process for manufacturing forging.
Background technology
2219 aluminium alloys have the characteristics that specific strength, mechanical properties and Brinell hardness are high, low temperature and high-temperature mechanics
Can be good, the features such as anti-stress corrosion performance is good, suitable for structural member, the high-intensity welding part to work at 315 DEG C of high temperature.It is changed
Study a point such as following table：
Table 1：The chemical composition of 2219 aluminium alloys
2219 aluminium alloys are widely applied in aerospace industry.2219 aluminum alloy C-shaped section ring parts are boats
Common a kind of part type on empty engine, the common production method for 2219 aluminum alloy C-shaped section ring parts are to use
Plank curling welding obtains ring or production rectangle ring is machined to obtain special-shaped ring, such production method exist with
Lower shortcoming：
1st, the special-shaped ring obtained after being welded by plank, commissure material structure exist with the other regional organizations of part
Difference causes part hydraulic performance decline.
2nd, there are welding stresses after welding, and the release of meeting stress generates moderate finite deformation in the process for following process and use, leads
Cause product rejection.
If the 3, producing rectangle ring, the material of follow-up mechanical processing cutting removal is more, and the streamline for destroying forging is complete
Whole property reduces its specific strength, mechanical properties and Brinell hardness height, and the period processed is longer, and stock utilization is low,
It causes to waste, does not meet the requirement of sustainable development.
Invention content
In order to solve the above technical problems existing in the prior art, the present invention provides a kind of 2219 aluminum alloy C-shaped sections
Ring forging manufacturing method, includes the following steps：
1) sawing；2219 rodss and bars of aluminium alloy are subjected to sawing by specification；
2) quenching treatment；
3) 2219 rodss and bars of aluminium alloy of quenching treatment are subjected to jumping-up, punching, saddle support reaming acquisition rectangle ring billet；
4) special-shaped ring billet makes, and rectangle ring billet is placed on looping mill, the rotating speed of the home roll mold A of looping mill for 0.2~
0.4rad/s, core roller carry out looping mill rolling according to following feed speed to rectangle ring billet：Roll bite stage, by feed rate of idle roll by
0mm/s increases to 0.3mm/s, and ring billet is made to bite rolling；The stable rolling stage is rolled, feed rate of idle roll is increased by 0.3mm/s
0.6mm/s is added to, makes ring billet stable rolling, diameter is constantly grown up；School circle, truing phase, by feed rate of idle roll by 0.6mm/s
0.2mm/s is gradually decreased to, make the ovality of ring and is of the required size, obtains special-shaped ring billet；
5) special-shaped ring billet is placed on looping mill by forging, and the rotating speed of the home roll mold B of looping mill is 0.2~0.4rad/s,
Finish to gauge core roller carries out looping mill rolling according to following feed speed to special-shaped ring billet：Bite stage is rolled, by feed rate of idle roll by 0mm/s
Increase to 0.3mm/s；Ring billet is made to bite rolling；The stable rolling stage is rolled, feed rate of idle roll is increased to by 0.3mm/s
0.6mm/s；Make ring billet stable rolling, diameter is constantly grown up；By core roller, feed speed is gradual by 0.6mm/s for school circle, truing phase
0.2mm/s is reduced to, make the ovality of ring and is of the required size, obtains forging.
Further, the quenching treatment is：2219 good rodss and bars of aluminium alloy of sawing are heated to 440~460 DEG C simultaneously
Heat preservation, soaking time are：The effective thickness of bar × (2~4) min/mm, is then cooled to 200 with the rate of 2~5 DEG C/min
Below DEG C；
Further, the temperature of the quenching treatment is 450 DEG C, and processing time is that soaking time is：Bar it is effective
Then thickness × 2.5min/mm is cooled to less than 200 DEG C with the rate of 3 DEG C/min.
Further, the jumping-up of the step 3), punching, saddle support reaming temperature are 400~430 DEG C.
Further, the special-shaped ring billet in looping mill rolling into secondary quenching processing is also carried out before forging, specifically, being heated to
470~490 DEG C and keep the temperature, the same Quenching Soaking Time of soaking time, then with the rate of 2~5 DEG C/min be cooled to 200 DEG C with
Under.
Further, the finished product forging also passes through temper, specially：First forging is carried out at average tempering
Reason, temperature are 260~300 DEG C, and the time is 2~8h；Then forging being subjected to lonneal processing, temperature is 170~200 DEG C,
Time is 5~10h.
The present invention technique effect be：2219 aluminium alloy abnormity rings are produced using this manufacturing method, due to forging shape
Closer to part, it can more keep forging streamline complete, and subsequent allowance is small, the period of processing is short, and stock utilization is high.
And ring is complete annulus in itself, and interior tissue is uniform, is not required to be welded, so as to solve the tissue of plank curling welding
The problem of difference and deformation.Simultaneously by increasing quenching and temper, its mechanical properties and Brinell hardness are increased.
Description of the drawings
Fig. 1 is the structure diagram before the special-shaped ring billet cerclage of the present invention.
Fig. 2 is the structure diagram in the special-shaped ring billet cerclage of the present invention.
Fig. 3 is the structure diagram before forging cerclage of the present invention.
Fig. 4 is the structure diagram in forging cerclage of the present invention.
In figure：1- rectangle ring billets, 2- core rollers, 3- home roll mold A, 4- abnormity ring billets, 5- home roll molds.
Specific embodiment
It is limited technical scheme of the present invention is further, but is required with specific embodiment below in conjunction with the accompanying drawings
The range of protection is not only limited to made description.
Embodiment one
A kind of 2219 aluminum alloy C-shaped section rings process for manufacturing forging are present embodiments provided, are included the following steps：
1) sawing；2219 rodss and bars of aluminium alloy are subjected to sawing by specification；
2) 2219 good rodss and bars of aluminium alloy of sawing are heated to 440~460 DEG C and kept the temperature by quenching treatment, and soaking time is：
The effective thickness of bar × (2~4) min/mm, is then cooled to less than 200 DEG C with the rate of 2~5 DEG C/min；The present embodiment is excellent
It is 450 DEG C to select heating temperature, and processing time is that soaking time is：Effective thickness × 2.5min/mm of bar, then with 3 DEG C/
The rate of min is cooled to less than 200 DEG C；
3) 2219 rodss and bars of aluminium alloy of quenching treatment are subjected to jumping-up, punching, saddle support reaming acquisition rectangle ring billet 1, entirely
The temperature of process is 400~430 DEG C；The present embodiment is preferably 420 DEG C；
4) special-shaped ring billet makes, and as depicted in figs. 1 and 2, rectangle ring billet is placed on looping mill, the home roll mold of looping mill
The rotating speed of A3 is 0.2~0.4rad/s, and core roller 2 carries out looping mill rolling according to following feed speed to rectangle ring billet：Roll bite stage,
2 feed speed of core roller is increased into 0.3mm/s by 0mm/s, ring billet is made to bite rolling；Roll the stable rolling stage by core roller 2 into
0.6mm/s is increased to by 0.3mm/s to speed, makes ring billet stable rolling, diameter is constantly grown up；School circle, truing phase are by core roller 2
Feed speed gradually decreases to 0.2mm/s by 0.6mm/s, makes the ovality of ring and is of the required size, and obtains special-shaped ring billet
4；
5) as shown in Figure 3 and Figure 4, special-shaped ring billet 4 is placed on looping mill for forging, and the home roll mold B5's of looping mill turns
Speed is 0.2~0.4rad/s, and finish to gauge core roller 2 carries out looping mill rolling according to following feed speed to special-shaped ring billet：Bite stage is rolled, it will
2 feed speed of core roller increases to 0.3mm/s by 0mm/s；Ring billet is made to bite rolling；The stable rolling stage is rolled, core roller 2 is fed
Speed increases to 0.6mm/s by 0.3mm/s；Make ring billet stable rolling, diameter is constantly grown up；School circle, truing phase by core roller 2 into
0.2mm/s is gradually decreased to by 0.6mm/s to speed, make the ovality of ring and is of the required size, obtains forging.
Embodiment two
A kind of 2219 aluminum alloy C-shaped section rings process for manufacturing forging are present embodiments provided, are included the following steps：
1) sawing；2219 rodss and bars of aluminium alloy are subjected to sawing by specification；
2) 2219 good rodss and bars of aluminium alloy of sawing are heated to 440~460 DEG C and kept the temperature by quenching treatment, and soaking time is：
The effective thickness of bar × (2~4) min/mm, is then cooled to less than 200 DEG C with the rate of 2~5 DEG C/min；The present embodiment is excellent
It is 450 DEG C to select heating temperature, and processing time is that soaking time is：Effective thickness × 2.5min/mm of bar, then with 3 DEG C/
The rate of min is cooled to less than 200 DEG C；
3) 2219 rodss and bars of aluminium alloy of quenching treatment are subjected to jumping-up, punching, saddle support reaming acquisition rectangle ring billet 1, entirely
The temperature of process is 400~430 DEG C；The present embodiment is preferably 420 DEG C；
4) special-shaped ring billet makes, and as depicted in figs. 1 and 2, rectangle ring billet is placed on looping mill, the home roll mold of looping mill
The rotating speed of A3 is 0.2~0.4rad/s, and core roller 2 carries out looping mill rolling according to following feed speed to rectangle ring billet：Roll bite stage,
2 feed speed of core roller is increased into 0.3mm/s by 0mm/s, ring billet is made to bite rolling；Roll the stable rolling stage by core roller 2 into
0.6mm/s is increased to by 0.3mm/s to speed, makes ring billet stable rolling, diameter is constantly grown up；School circle, truing phase are by core roller 2
Feed speed gradually decreases to 0.2mm/s by 0.6mm/s, makes the ovality of ring and is of the required size, and obtains special-shaped ring billet
4；
5) secondary quenching is handled, specifically, special-shaped ring billet 4 is heated to 470~490 DEG C and is kept the temperature, soaking time is same to quench
Then fiery soaking time is cooled to less than 200 DEG C with the rate of 2~5 DEG C/min；The present embodiment is preferably with the speed of 3 DEG C/min
Rate is cooled to less than 200 DEG C；
6) as shown in Figure 3 and Figure 4, special-shaped ring billet 4 is placed on looping mill for forging, and the home roll mold B5's of looping mill turns
Speed is 0.2~0.4rad/s, and finish to gauge core roller 2 carries out looping mill rolling according to following feed speed to special-shaped ring billet：Bite stage is rolled, it will
2 feed speed of core roller increases to 0.3mm/s by 0mm/s；Ring billet is made to bite rolling；The stable rolling stage is rolled, core roller 2 is fed
Speed increases to 0.6mm/s by 0.3mm/s；Make ring billet stable rolling, diameter is constantly grown up；School circle, truing phase by core roller 2 into
0.2mm/s is gradually decreased to by 0.6mm/s to speed, make the ovality of ring and is of the required size, obtains forging.
Embodiment three
A kind of 2219 aluminum alloy C-shaped section rings process for manufacturing forging are present embodiments provided, are included the following steps：
1) sawing；2219 rodss and bars of aluminium alloy are subjected to sawing by specification；
2) 2219 good rodss and bars of aluminium alloy of sawing are heated to 440~460 DEG C and kept the temperature by quenching treatment, and soaking time is：
The effective thickness of bar × (2~4) min/mm, is then cooled to less than 200 DEG C with the rate of 2~5 DEG C/min；The present embodiment is excellent
It is 450 DEG C to select heating temperature, and processing time is that soaking time is：Effective thickness × 2.5min/mm of bar, then with 3 DEG C/
The rate of min is cooled to less than 200 DEG C；
3) 2219 rodss and bars of aluminium alloy of quenching treatment are subjected to jumping-up, punching, saddle support reaming acquisition rectangle ring billet 1, entirely
The temperature of process is 400~430 DEG C；The present embodiment is preferably 420 DEG C；
4) special-shaped ring billet makes, and as depicted in figs. 1 and 2, rectangle ring billet is placed on looping mill, the home roll mold of looping mill
The rotating speed of A3 is 0.2~0.4rad/s, and core roller 2 carries out looping mill rolling according to following feed speed to rectangle ring billet：Roll bite stage,
2 feed speed of core roller is increased into 0.3mm/s by 0mm/s, ring billet is made to bite rolling；Roll the stable rolling stage by core roller 2 into
0.6mm/s is increased to by 0.3mm/s to speed, makes ring billet stable rolling, diameter is constantly grown up；School circle, truing phase are by core roller 2
Feed speed gradually decreases to 0.2mm/s by 0.6mm/s, makes the ovality of ring and is of the required size, and obtains special-shaped ring billet
4；
5) as shown in Figure 3 and Figure 4, special-shaped ring billet 4 is placed on looping mill for forging, and the home roll mold B5's of looping mill turns
Speed is 0.2~0.4rad/s, and finish to gauge core roller 2 carries out looping mill rolling according to following feed speed to special-shaped ring billet：Bite stage is rolled, it will
2 feed speed of core roller increases to 0.3mm/s by 0mm/s；Ring billet is made to bite rolling；The stable rolling stage is rolled, core roller 2 is fed
Speed increases to 0.6mm/s by 0.3mm/s；Make ring billet stable rolling, diameter is constantly grown up；School circle, truing phase by core roller 2 into
0.2mm/s is gradually decreased to by 0.6mm/s to speed, make the ovality of ring and is of the required size, obtains forging；
6) forging is first carried out average tempering processing by temper, and temperature is 260~300 DEG C, and the time is 2~8h；Then
Forging is subjected to lonneal processing, temperature is 170~200 DEG C, and the time is 5~10h.
Example IV
A kind of 2219 aluminum alloy C-shaped section rings process for manufacturing forging are present embodiments provided, are included the following steps：
1) sawing；2219 rodss and bars of aluminium alloy are subjected to sawing by specification；
2) 2219 good rodss and bars of aluminium alloy of sawing are heated to 440~460 DEG C and kept the temperature by quenching treatment, and soaking time is：
The effective thickness of bar × (2~4) min/mm, is then cooled to less than 200 DEG C with the rate of 2~5 DEG C/min；The present embodiment is excellent
It is 450 DEG C to select heating temperature, and processing time is that soaking time is：Effective thickness × 2.5min/mm of bar, then with 3 DEG C/
The rate of min is cooled to less than 200 DEG C；
3) 2219 rodss and bars of aluminium alloy of quenching treatment are subjected to jumping-up, punching, saddle support reaming acquisition rectangle ring billet 1, entirely
The temperature of process is 400~430 DEG C；The present embodiment is preferably 420 DEG C；
4) special-shaped ring billet makes, and as depicted in figs. 1 and 2, rectangle ring billet is placed on looping mill, the home roll mold of looping mill
The rotating speed of A3 is 0.2~0.4rad/s, and core roller 2 carries out looping mill rolling according to following feed speed to rectangle ring billet：Roll bite stage,
2 feed speed of core roller is increased into 0.3mm/s by 0mm/s, ring billet is made to bite rolling；Roll the stable rolling stage by core roller 2 into
0.6mm/s is increased to by 0.3mm/s to speed, makes ring billet stable rolling, diameter is constantly grown up；School circle, truing phase are by core roller 2
Feed speed gradually decreases to 0.2mm/s by 0.6mm/s, makes the ovality of ring and is of the required size, and obtains special-shaped ring billet
4；
5) secondary quenching is handled, specifically, special-shaped ring billet 4 is heated to 470~490 DEG C and is kept the temperature, soaking time is same to quench
Then fiery soaking time is cooled to less than 200 DEG C with the rate of 2~5 DEG C/min；The present embodiment is preferably with the speed of 3 DEG C/min
Rate is cooled to less than 200 DEG C；
6) as shown in Figure 3 and Figure 4, special-shaped ring billet 4 is placed on looping mill for forging, and the home roll mold B5's of looping mill turns
Speed is 0.2~0.4rad/s, and finish to gauge core roller 2 carries out looping mill rolling according to following feed speed to special-shaped ring billet：Bite stage is rolled, it will
2 feed speed of core roller increases to 0.3mm/s by 0mm/s；Ring billet is made to bite rolling；The stable rolling stage is rolled, core roller 2 is fed
Speed increases to 0.6mm/s by 0.3mm/s；Make ring billet stable rolling, diameter is constantly grown up；School circle, truing phase by core roller 2 into
0.2mm/s is gradually decreased to by 0.6mm/s to speed, make the ovality of ring and is of the required size, obtains forging；
7) forging is first carried out average tempering processing by temper, and temperature is 260~300 DEG C, and the time is 2~8h；Then
Forging is subjected to lonneal processing, temperature is 170~200 DEG C, and the time is 5~10h.
The present embodiment is also detected the forging mechanical property of above-mentioned four embodiment.Table 2 and table 3 specific as follows, as a result
Show that mechanical properties and the Brinell hardness of the forging are high.
Table 2：Mechanical index A1
Table 3：Mechanical index A2
Claims (6)
1. a kind of 2219 aluminum alloy C-shaped section rings process for manufacturing forging, which is characterized in that include the following steps：
1) sawing；2219 rodss and bars of aluminium alloy are subjected to sawing by specification；
2) quenching treatment；
3) 2219 rodss and bars of aluminium alloy of quenching treatment are subjected to jumping-up, punching, saddle support reaming acquisition rectangle ring billet；
4) special-shaped ring billet makes, and rectangle ring billet is placed on looping mill, the rotating speed of the home roll mold A of looping mill for 0.2~
0.4rad/s, core roller carry out looping mill rolling according to following feed speed to rectangle ring billet：Roll bite stage, by feed rate of idle roll by
0mm/s increases to 0.3mm/s, and ring billet is made to bite rolling；The stable rolling stage is rolled, feed rate of idle roll is increased by 0.3mm/s
0.6mm/s is added to, makes ring billet stable rolling, diameter is constantly grown up；School circle, truing phase, by feed rate of idle roll by 0.6mm/s
0.2mm/s is gradually decreased to, make the ovality of ring and is of the required size, obtains special-shaped ring billet；
5) special-shaped ring billet is placed on looping mill by forging, and the rotating speed of the home roll mold B of looping mill is 0.2~0.4rad/s, finish to gauge
Core roller carries out looping mill rolling according to following feed speed to special-shaped ring billet：Bite stage is rolled, feed rate of idle roll is increased by 0mm/s
To 0.3mm/s；Ring billet is made to bite rolling；The stable rolling stage is rolled, feed rate of idle roll is increased into 0.6mm/ by 0.3mm/s
s；Make ring billet stable rolling, diameter is constantly grown up；By core roller, feed speed is gradually decreased to by 0.6mm/s for school circle, truing phase
0.2mm/s makes the ovality of ring and is of the required size, obtains forging.
2. 2219 aluminum alloy C-shaped section rings process for manufacturing forging as described in claim 1, it is characterised in that：The quenching
It handles and is：2219 good rodss and bars of aluminium alloy of sawing are heated to 440~460 DEG C and are kept the temperature, soaking time is：Effective thickness of bar
Degree × (2~4) min/mm, is then cooled to less than 200 DEG C with the rate of 2~5 DEG C/min.
3. 2219 aluminum alloy C-shaped section rings process for manufacturing forging as claimed in claim 2, it is characterised in that：The quenching
The temperature of processing is 450 DEG C, and processing time is that soaking time is：Effective thickness × 2.5min/mm of bar, then with 3 DEG C/
The rate of min is cooled to less than 200 DEG C.
4. 2219 aluminum alloy C-shaped section rings process for manufacturing forging as described in claim 1, it is characterised in that：The step
3) jumping-up, punching, saddle support reaming temperature are 400~430 DEG C.
5. 2219 aluminum alloy C-shaped section rings process for manufacturing forging as described in claim 1, it is characterised in that：The abnormity
Ring billet is in looping mill rolling into secondary quenching processing is also carried out before forging, specifically, being heated to 470~490 DEG C and keeping the temperature, soaking time is same
Then Quenching Soaking Time is cooled to less than 200 DEG C with the rate of 2~5 DEG C/min.
6. 2219 aluminum alloy C-shaped section rings process for manufacturing forging as described in claim 1, it is characterised in that：The finished product
Forging also passes through temper, specially：Forging is first subjected to average tempering processing, temperature is 260~300 DEG C, the time for 2~
8h；Then forging is subjected to lonneal processing, temperature is 170~200 DEG C, and the time is 5~10h.
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