阅读说明：本技术 一种薄壁异形航空氧气支架及其制备方法 (Thin-wall special-shaped aviation oxygen support and preparation method thereof ) 是由 顾斌杰 于 2021-02-02 设计创作，主要内容包括：本发明公开了一种薄壁异形航空氧气支架及其制备方法,该氧气支架包括第一板部、第二板部、连接板部和第三板部,第二板部的一端与第一板部连接,另一端经连接板部与第三板部连接,第一板部的底端设有凸柱,第一板部的底部靠近凸柱对称设有第一凸板,第一板部的底部开设有若干拱形通孔,第二板部的底部开设有若干第一圆通孔,顶部开设有若干条形孔,第三板部位于条形孔的上方处设有凹口,第三板部位于高出凹口底面的部分开设有若干第二圆通孔。本发明提供的薄壁异形航空氧气支架结构设计合理,利于挤压成型,降低整体生产制造成本的同时,其机械性能够满足氧气支架的使用要求。(The invention discloses a thin-wall special-shaped aviation oxygen support and a preparation method thereof, wherein the oxygen support comprises a first plate part, a second plate part, a connecting plate part and a third plate part, one end of the second plate part is connected with the first plate part, the other end of the second plate part is connected with the third plate part through the connecting plate part, a convex column is arranged at the bottom end of the first plate part, first convex plates are symmetrically arranged at the bottom of the first plate part close to the convex column, a plurality of arched through holes are formed at the bottom of the first plate part, a plurality of first round through holes are formed at the bottom of the second plate part, a plurality of strip-shaped holes are formed at the top of the second plate part, a notch is formed at the third plate part above the strip-shaped holes, and a plurality. The thin-wall special-shaped aviation oxygen support provided by the invention has reasonable structural design, is beneficial to extrusion forming, reduces the overall production and manufacturing cost, and simultaneously has mechanical properties capable of meeting the use requirements of the oxygen support.)

1. The utility model provides a thin wall dysmorphism aviation oxygen support which characterized in that: the oxygen bracket comprises a first plate part, a second plate part, a connecting plate part and a third plate part, wherein one end of the second plate part is connected with the first plate part, the other end is connected with the third plate part through the connecting plate part, the first plate portion has a thickness greater than that of the second plate portion, the second plate portion has a thickness equal to that of the third plate portion, the bottom end of the first plate part is provided with a convex column, the bottom of the first plate part is symmetrically provided with a first convex plate close to the convex column, the bottom of the first plate part is evenly provided with a plurality of arched through holes along the length direction, the bottom of the second plate part is evenly provided with a plurality of first round through holes along the length direction, the top of the second plate part is evenly provided with a plurality of strip-shaped holes along the length direction, the included angle between the third plate part and the second plate part is 160-170 degrees, a notch is arranged at the position of the third plate part, which is positioned above the strip-shaped hole, and a plurality of second round through holes are formed in the part, higher than the bottom surface of the notch, of the third plate along the length direction of the third plate.

2. The thin-walled profiled aerospace oxygen carrier of claim 1 wherein: the thickness of the first plate part is 2.3-2.5mm, the outer diameter of the convex column is 3.7-3.9mm, and the thickness of the first convex column is 1.7-1.9 mm.

3. The thin-walled profiled aerospace oxygen carrier of claim 1 wherein: the thickness of the second plate part and the third plate part is 1.8-2.0 mm.

4. The thin-walled profiled aerospace oxygen carrier of claim 1 wherein: the arched through holes divide the first convex plates on two sides into a plurality of sections of plate bodies, the upper parts of the arched through holes are semicircular grooves, the lower parts of the arched through holes are rectangular grooves, the width of each rectangular groove is 13-15mm, and the height of each rectangular groove is 20-22 mm.

5. The thin-walled profiled aerospace oxygen carrier of claim 1 wherein: the length of the strip-shaped hole is 120-130mm, and the width of the strip-shaped hole is 14-16 mm; the distance between two adjacent strip-shaped holes is 140 mm and 150 mm.

6. The thin-walled profiled aerospace oxygen carrier of claim 1 wherein: the diameter of the first round through hole is 3-5mm, and the diameter of the second round through hole is 5-7 mm.

7. The thin-walled profiled aerospace oxygen carrier of claim 1 wherein: the lengths of the first plate part and the second plate part are equal, the lengths are 1180-1260mm, the two ends of the connecting plate part and the third plate part are inwards contracted relative to the second plate part, and two notches with the widths of 10-20mm are formed.

8. The thin-walled profiled aerospace oxygen carrier of claim 1 wherein: the oxygen bracket is made of 7075-T73511 aluminum alloy material.

9. The thin-walled profiled aviation oxygen support as claimed in claim 1, wherein the preparation method of the oxygen support comprises the steps of:

(1) casting an aluminum bar: smelting an aluminum ingot and an auxiliary material to obtain molten aluminum, and casting the molten aluminum to obtain an aluminum bar;

(2) heating an aluminum bar: heating the obtained aluminum bar by using a power frequency furnace to obtain a heated aluminum bar;

(3) extruding: placing the heated aluminum bar into a preheated die, and extruding the die by adopting extrusion equipment to obtain an extruded aluminum profile; a heat preservation device is arranged between the power frequency furnace and the die, and the temperature of the aluminum bar is kept at 460 ℃ in the heating and transferring process;

(4) quenching: quenching the extruded aluminum profile at the quenching rate of 120-;

(5) straightening: straightening the quenched aluminum profile through straightening equipment to obtain a straightened aluminum profile semi-finished product;

(6) and (3) segmented stamping: firstly, saw cutting and segmenting the processed aluminum profile, and then performing stamping forming processing on the aluminum profile segments for four times by utilizing stamping equipment;

(7) secondary aging: carrying out secondary aging treatment on the aluminum profile subjected to sectional stamping, heating to 110-130 ℃, and then preserving heat for 6-8 hours; then the temperature is increased to 160 ℃ and 180 ℃, the temperature is kept for 8 to 10 hours, and the treated aluminum profile is obtained after opening the furnace.

10. The thin-walled profiled aerospace oxygen carrier of claim 9 wherein: in the step (6), in the step of sectional stamping, the four-time stamping forming processing is as follows: the third plate part with the notch and the notch is formed by first stamping, the second round through hole is formed on the third plate part by second stamping, the first round through hole is formed on the second plate part by third stamping, and the arch-shaped through hole is formed on the first plate part by fourth stamping.

Technical Field

The invention relates to the technical field of aviation accessories, in particular to a thin-wall special-shaped aviation oxygen support and a preparation method thereof.

Background

An oxygen supply system for an aircraft is individual protection equipment which ensures that passengers of the aircraft can inhale enough oxygen to prevent oxygen deficiency in high-altitude flight or emergency situations. The device has various forms according to the number of passengers, voyage, lifting limit (cruising height) and task property, but basically comprises an oxygen source, a control valve, a regulator, an indicating instrument, an oxygen supply device, a disconnect device, an oxygen mask and the like. The oxygen source is primarily gaseous oxygen followed by liquid oxygen, and some large passenger aircraft also use solid oxygen sources. The oxygen regulator automatically regulates the oxygen supply pressure, flow and oxygen content percentage according to a certain rule along with the change of the flying height, and meets the physiological requirements of human body respiration and body surface pressurization. An emergency oxygen supply system is provided on a civil aircraft. The oxygen deficiency of passengers is prevented by the pressurization of the cabin during normal flight, and once the pressurization system of the cabin fails, the oxygen consumption of all passengers and passengers is ensured by the emergency oxygen supply system in a short time at the same time of the descending altitude of the airplane.

The oxygen bracket is a part of an oxygen supply system of an aviation aircraft, belongs to an ultrathin-wall special-shaped extrusion part, and is made of 7075-T73511 aluminum alloy materials with high strength. The oxygen support in the prior art has the disadvantages that firstly, the structural design is not reasonable enough, so that the mechanical property of the oxygen support cannot meet the use requirement; secondly, the parts are easy to deform and cannot meet the requirement of ultrahigh straightness of the parts.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provides a thin-wall special-shaped aviation oxygen support and a preparation method thereof.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

a thin-wall special-shaped aviation oxygen support comprises a first plate part, a second plate part, a connecting plate part and a third plate part, wherein one end of the second plate part is connected with the first plate part, the other end of the second plate part is connected with the third plate part through the connecting plate part, the thickness of the first plate part is larger than that of the second plate part, the thickness of the second plate part is equal to that of the third plate part, a convex column is arranged at the bottom end of the first plate part, a first convex plate is symmetrically arranged at the bottom of the first plate part close to the convex column, a plurality of arched through holes are uniformly arranged at the bottom of the first plate part along the length direction of the first plate part, a plurality of first round through holes are uniformly arranged at the bottom of the second plate part along the length direction of the second plate part, a plurality of strip-shaped holes are uniformly arranged at the top of the second plate part along the length direction, the included angle between the third plate part and the second, and a plurality of second round through holes are formed in the part, higher than the bottom surface of the notch, of the third plate along the length direction of the third plate.

Further, in the thin-wall special-shaped aviation oxygen support, the thickness of the first plate part is 2.3-2.5mm, the outer diameter of the convex column is 3.7-3.9mm, and the thickness of the first convex column is 1.7-1.9 mm.

Furthermore, in the thin-wall special-shaped aviation oxygen support, the thickness of the second plate part and the third plate part is 1.8-2.0 mm.

Furthermore, in the thin-wall special-shaped aviation oxygen support, the first convex plates on two sides are divided into a plurality of sections of plate bodies by the arched through holes, the upper parts of the arched through holes are semicircular grooves, the lower parts of the arched through holes are rectangular grooves, the width of each rectangular groove is 13-15mm, and the height of each rectangular groove is 20-22 mm.

Further, in the thin-wall special-shaped aviation oxygen support, the length of the strip-shaped hole is 120-130mm, and the width of the strip-shaped hole is 14-16 mm; the distance between two adjacent strip-shaped holes is 140 mm and 150 mm.

Further, in the thin-wall special-shaped aviation oxygen support, the diameter of the first circular through hole is 3-5mm, and the diameter of the second circular through hole is 5-7 mm.

Furthermore, in the thin-wall special-shaped aviation oxygen support, the lengths of the first plate part and the second plate part are equal, the length is 1180-.

Further, in the thin-wall special-shaped aviation oxygen support, the oxygen support is made of 7075-T73511 aluminum alloy materials.

A preparation method of a thin-wall special-shaped aviation oxygen support comprises the following steps:

(1) casting an aluminum bar: smelting an aluminum ingot and an auxiliary material to obtain molten aluminum, and casting the molten aluminum to obtain an aluminum bar;

(2) heating an aluminum bar: heating the obtained aluminum bar by using a power frequency furnace to obtain a heated aluminum bar;

(3) extruding: placing the heated aluminum bar into a preheated die, and extruding the die by adopting extrusion equipment to obtain an extruded aluminum profile; a heat preservation device is arranged between the power frequency furnace and the die, and the temperature of the aluminum bar is kept at 460 ℃ in the heating and transferring process;

(4) quenching: quenching the extruded aluminum profile at the quenching rate of 120-;

(5) straightening: straightening the quenched aluminum profile through straightening equipment to obtain a straightened aluminum profile semi-finished product;

(6) and (3) segmented stamping: firstly, saw cutting and segmenting the processed aluminum profile, and then performing stamping forming processing on the aluminum profile segments for four times by utilizing stamping equipment;

(7) secondary aging: carrying out secondary aging treatment on the aluminum profile subjected to sectional stamping, heating to 110-130 ℃, and then preserving heat for 6-8 hours; then the temperature is increased to 160 ℃ and 180 ℃, the temperature is kept for 8 to 10 hours, and the treated aluminum profile is obtained after opening the furnace.

Further, in the preparation method of the thin-wall special-shaped aviation oxygen support, in the step (6) of segmented stamping, four times of stamping forming processing are as follows: the third plate part with the notch and the notch is formed by first stamping, the second round through hole is formed on the third plate part by second stamping, the first round through hole is formed on the second plate part by third stamping, and the arch-shaped through hole is formed on the first plate part by fourth stamping.

The invention has the beneficial effects that:

1. the thin-wall special-shaped aviation oxygen support provided by the invention has reasonable structural design, is beneficial to extrusion forming, reduces the overall production and manufacturing cost, and simultaneously has mechanical properties capable of meeting the use requirements of the oxygen support.

2. In the extrusion forming process of the thin-wall special-shaped aviation oxygen support, the heat preservation device is additionally arranged, the quenching rate is increased, the quality of an aluminum profile product is stable, the aluminum profile product has better corrosion resistance, the residual stress generated in the aluminum profile is eliminated by secondary aging treatment after sectional stamping, the shape, the size, the strength and the hardness are stabilized, and the final mechanical property of the aluminum profile is stably improved.

Of course, it is not necessary for any one product that embodies the invention to achieve all of the above advantages simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the thin-walled special-shaped aviation oxygen support of the present invention in a front view;

FIG. 2 is a schematic side view of the thin-walled special-shaped aviation oxygen support of the present invention;

FIG. 3 is a schematic front view of an extrusion of the present invention after being sectioned and prior to being stamped;

FIG. 4 is a schematic side view of an extrusion of the present invention after being sectioned and prior to being stamped;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a first plate part, 2-a second plate part, 3-a connecting plate part, 4-a third plate part, 5-a convex column, 6-a first convex plate, 7-an arch through hole, 8-a first round through hole, 9-a strip-shaped hole and 10-a second round through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present embodiment is a thin-walled profiled aviation oxygen support, which includes a first plate portion 1, a second plate portion 2, a connecting plate portion 3 and a third plate portion 4, wherein one end of the second plate portion 2 is connected to the first plate portion 1, and the other end is connected to the third plate portion 4 via the connecting plate portion 3. The thickness of first board portion 1 is greater than the thickness of second board portion 2, and the thickness of second board portion 2 equals the thickness of third board portion 4, and the bottom of first board portion 1 is equipped with projection 5, and the bottom of first board portion 1 is close to projection 5 symmetry and is equipped with first protruding board 6. A plurality of arch through-holes 7 have evenly been seted up along its length direction in the bottom of first board 1, a plurality of first round through-holes 8 have evenly been seted up along its length direction in the bottom of second board 2, a plurality of bar holes 9 have evenly been seted up along its length direction in the top, the contained angle between third board 4 and the second board 2 is 160 and becomes 170, third board 4 is located the top department of bar hole 9 and is equipped with the notch, the part that third board 4 is located the higher notch bottom surface has seted up a plurality of second round through-holes 10 along its length direction.

In this embodiment, the thickness of the first plate portion 1 is 2.3-2.5mm, the outer diameter of the convex column 5 is 3.7-3.9mm, and the thickness of the first convex plate 6 is 1.7-1.9 mm. The thickness of the second plate part 2 and the third plate part 4 is 1.8-2.0 mm.

In this embodiment, the first protruding plates 6 on both sides are divided into a plurality of sections by the arched through holes 7, the upper portions of the arched through holes 7 are semicircular grooves, the lower portions of the arched through holes 7 are rectangular grooves, and the rectangular grooves have a width of 13-15mm and a height of 20-22 mm.

In this embodiment, the length of the strip-shaped hole 9 is 120-130mm, and the width thereof is 14-16 mm; the distance between two adjacent strip-shaped holes is 140 mm and 150 mm.

In this embodiment, the diameter of the first circular through hole 8 is 3-5mm, and the diameter of the second circular through hole 10 is 5-7 mm.

In the embodiment, the lengths of the first plate part 1 and the second plate part 2 are equal, the length is 1180-.

In this embodiment, the oxygen bracket is made of 7075-T73511 aluminum alloy material.

The embodiment also provides a preparation method of the thin-wall special-shaped aviation oxygen support, which comprises the following steps:

(1) casting an aluminum bar: smelting an aluminum ingot and an auxiliary material to obtain molten aluminum, and casting the molten aluminum to obtain an aluminum bar;

(2) heating an aluminum bar: heating the obtained aluminum bar by using a power frequency furnace to obtain a heated aluminum bar;

(3) extruding: placing the heated aluminum bar into a preheated die, and extruding the die by adopting extrusion equipment to obtain an extruded aluminum profile; a heat preservation device is arranged between the power frequency furnace and the die, and the temperature of the aluminum bar is kept at 460 ℃ in the heating and transferring process;

(4) quenching: quenching the extruded aluminum profile in a totally-enclosed water spraying and air spraying device at the quenching rate of 120-;

(5) straightening: straightening the quenched aluminum profile through straightening equipment to obtain a straightened aluminum profile semi-finished product;

(6) and (3) segmented stamping: firstly, sawing and segmenting the processed aluminum profile to obtain a structure shown in the figure 3-4, and then, stamping and forming the aluminum profile segments for four times by utilizing stamping equipment;

(7) secondary aging: carrying out secondary aging treatment on the aluminum profile subjected to sectional stamping, heating to 110-130 ℃, and then preserving heat for 6-8 hours; then the temperature is increased to 160 ℃ and 180 ℃, the temperature is kept for 8 to 10 hours, and the treated aluminum profile is obtained after opening the furnace. The aluminum profile finally meets the requirements of mechanical properties of 512MPa of compressive strength, 428MPa of yield strength, 9.5 percent of elongation and HRB 80 of hardness.

Further, in the step (6) of the preparation method of the thin-wall special-shaped aviation oxygen support, four times of stamping forming processing are as follows:

stamping a third plate part with a notch and a notch for the first time;

punching for the second time on the third plate part to form a second round through hole;

punching for the third time on the second plate part to form a first round through hole;

and fourth punching to form an arch-shaped through hole on the first plate part.

The thin-wall special-shaped aviation oxygen support provided by the embodiment is reasonable in structural design, is beneficial to extrusion forming, reduces the whole production and manufacturing cost, and can meet the use requirement of the oxygen support in terms of mechanical property. The embodiment adds the heat preservation device to thin-walled dysmorphism aviation oxygen support extrusion in-process to improve quenching rate, make aluminium alloy product stable quality, have better corrosion resisting property, through secondary ageing treatment after the segmentation punching press, eliminate the inside residual stress effect that produces of aluminium alloy, firm shape size, intensity and hardness make the final mechanical properties of aluminium alloy obtain stable the improvement.

The preferred embodiments of the present invention disclosed above are intended to facilitate the explanation of the present invention only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.