7085 alloy high cylinder ring part forming process

文档序号：642051 发布日期：2021-05-14 浏览：17次中文

阅读说明：本技术 一种7085合金高筒环件成型工艺 (7085 alloy high cylinder ring part forming process ) 是由王清松金承龙吴道祥喻冰胡亚强孙丽丽陈月雁于 2020-12-22 设计创作，主要内容包括：本发明公开了一种7085合金高筒环件成型工艺,包括以下步骤：获取铸锭,并对铸锭和锻造用工具进行加热；对铸锭进行第一火锻造,开锻温度为430～460℃,终锻温度≥350℃,模具使用温度为250～420℃；对铸锭的长度端头标记A,侧面标记B,与A面和B面垂直的另一面标记C；按照锻造工序对铸锭进行锻造开坯,获取坯料,锻造工序为：打方拔长A面；墩粗A面；打方拔长C面；倒棱滚圆C面；墩粗C面；滚圆并平整端头；对坯料进行反挤压；对坯料进行第一次机加工至预设尺寸；坯料进行加热,并扩孔；扩孔后的坯料进行第二次机加工至目标尺寸。本发明所提供的工艺,可以有效提高7085合金高筒环件的成型质量,满足使用要求。(The invention discloses a 7085 alloy high cylinder ring forming process, which comprises the following steps: obtaining an ingot, and heating the ingot and a forging tool; carrying out first fire forging on the cast ingot, wherein the forging starting temperature is 430-460 ℃, the finish forging temperature is more than or equal to 350 ℃, and the using temperature of a die is 250-420 ℃; marking the end head of the length of the cast ingot with A, marking the side surface with B, and marking the other surface which is vertical to the A surface and the B surface with C; forging and cogging the ingot according to a forging process to obtain a blank, wherein the forging process comprises the following steps: squaring and drawing out the surface A; upsetting the surface A; squaring and drawing out the C surface; chamfering and rounding the C surface; upsetting the C surface; rounding and flattening the end; carrying out backward extrusion on the blank; machining the blank for the first time to a preset size; heating the blank and reaming; and carrying out secondary machining on the reamed blank to reach the target size. The process provided by the invention can effectively improve the forming quality of the 7085 alloy high-cylinder ring piece and meet the use requirements.)

1. A7085 alloy high cylinder ring forming process is characterized by comprising the following steps:

step S1: obtaining an ingot, and heating the ingot and a forging tool;

step S2: carrying out first fire forging on the cast ingot, wherein the forging starting temperature is 430-460 ℃, the finish forging temperature is more than or equal to 350 ℃, and the using temperature of a die is 250-420 ℃;

step S3: marking the length end of the cast ingot with A, marking the side surface with B, and marking the other surface which is vertical to the A surface and the B surface with C; forging and cogging the ingot according to a forging process to obtain a blank, wherein the forging process comprises the following steps: squaring and drawing out the surface A; upsetting the surface A; squaring and drawing out the C surface; chamfering and rounding the C surface; upsetting the C surface; rounding and flattening the end;

step S4: backward extruding the billet;

step S5: machining the blank for the first time to a preset size;

step S6: heating the blank and reaming the hole;

step S7: and carrying out secondary machining on the blank after hole expansion to reach the target size.

2. The process of claim 1, wherein the step S1, the heating the ingot and the forging tool comprises:

and heating the ingot by adopting an aluminum alloy blank heating furnace, wherein the heating temperature is 450 +/-10 ℃, the holding time of the ingot is more than or equal to 940 minutes, and the retention time after the temperature is reached is less than or equal to 16 hours.

3. The process of claim 2, wherein the step S1 of heating the ingot and the forging tool further comprises:

4. The process of claim 1, wherein the ingot has a length of 370 ± 10mm, a width of 1290 ± 10mm and a height of 2100 ± 10 mm; in step S3, the forging step includes:

drawing the A square until the width and the height of the A surface are both 900 +/-10 mm; the length of the C surface is 1600 +/-10 mm;

upsetting the A until the height of the A surface is 800-810 mm;

drawing the C square until the width and the height of the surface C are both 900 +/-20 mm, and the length of the surface A is 1600 +/-10 mm;

chamfering and rounding the C surface, wherein the distance from two opposite sides to the C surface is 960 +/-20 mm;

upsetting the C until the height of the C surface is 850 +/-10 mm;

the diameter from the round flat end to the ingot is 1240-1260mm, and the length is 1000-1050 mm.

5. The process of claim 4, wherein the step of drawing out the A square comprises: upsetting C to 1200mm in height, upsetting B to 800mm in height, upsetting C to 900mm in height, and upsetting B to 900mm in height;

the step of lengthening the C square comprises the following steps: thickening the pier B until the height of the surface B is 900 mm; upsetting the A until the height of the A surface is 900 mm.

6. The process of forming a 7085 alloy high barrel ring according to claim 1, wherein the step S4 includes:

replacing the mold: after a 10000-ton hydraulic press is adopted to remove a lower anvil block, a 7085 cylinder section backward extrusion lower die is installed, and an upper die removes the anvil block and is installed with a phi 650 backward extrusion upper die;

carrying out a backward extrusion process: the blank is straightened, the punch is centered, and the backward extrusion speed is controlled; lubricating oil is smeared on the lower die, and the punch is lifted for lubrication after being pressed for 100mm for the first time; lubricating once per 200mm of pressure; the back extrusion speed is 2-3 mm/s, and the back extrusion is carried out until the effective length is 1250 +/-20 mm.

7. The process of forming a 7085 alloy high barrel ring according to claim 1, wherein the step S5 includes:

removing the connecting skin at the bottom of the blank, processing the inner diameter to 650 plus 653mm and the outer diameter to 1297 plus 1300mm, wherein when more than 95% of the outer circumference of the blank is exposed to light, the arc part can not be processed, and two end heads are milled flat.

8. The process for forming the 7085 alloy high barrel ring according to any one of claims 1 to 7, wherein the step S6 includes:

heating the blank by adopting a shared heating furnace: heating to 450 +/-10 ℃, keeping the temperature for more than or equal to 300 minutes, and keeping the temperature for less than or equal to 16 hours;

heating a forging tool: the temperature of the tool heating furnace is fixed to be 450 +/-10 ℃, and the heating time of the core rod and the small flat anvil is more than or equal to 10 hours;

and (3) reaming the blank by adopting a 10000-ton hydraulic press and a 3T forging vehicle: the open forging temperature is 430-460 ℃, the finish forging temperature is more than or equal to 350 ℃, and the service temperature of the tool and the die is 300-420 ℃.

9. The process of claim 8, wherein the step S6 further comprises:

and (3) reaming process: adding a phi 500 core rod into a 10000T oil press to expand the hole until the outer diameter of the ring piece is 2300 plus 2330mm and the inner diameter is 2130 plus 2150 mm; reaming is completed for 6-7 circles, the first 3 circles are pressed down for 35 +/-2 mm each time, the 4 th circle is pressed down for 30 +/-2 mm, the 5 th circle is pressed down for 20 +/-2 mm, and finally 1 circle is pressed down for 10 +/-2 mm in shaping.

10. The forming process of the 7085 alloy high barrel ring according to any one of claims 1 to 7, wherein the copper element in the ingot comprises the following components in percentage by mass: cu is more than or equal to 1.5 and less than or equal to 2.1, and the mass percentage of the zinc element is as follows: zn is more than or equal to 7.2 and less than or equal to 8.1, and the mass percentage of the copper element of the magnesium element is as follows: mg is more than or equal to 1.4 and less than or equal to 2.0.

Technical Field

The invention relates to the field of alloy high cylinder ring part molding, in particular to a 7085 alloy high cylinder ring part molding process.

Background

In the aerospace field, a high-cylinder ring part is adopted as an ash revolving body part in the market, and in the forming process of the high-cylinder ring part, particularly for a 7085 alloy high-cylinder ring part, the processing is difficult due to the fact that the ratio of the height to the wall thickness of a forged part is large.

Therefore, how to effectively improve the forming quality of the 7085 alloy high-cylinder ring piece is a technical problem which needs to be solved by the technical personnel in the field at present.

Disclosure of Invention

The invention aims to provide a 7085 alloy high cylinder ring forming process for improving forming quality.

In order to achieve the purpose, the invention provides the following technical scheme:

a7085 alloy high cylinder ring forming process comprises the following steps:

step S1: obtaining an ingot, and heating the ingot and a forging tool;

step S4: backward extruding the billet;

step S5: machining the blank for the first time to a preset size;

step S6: heating the blank and reaming the hole;

step S7: and carrying out secondary machining on the blank after hole expansion to reach the target size.

Preferably, the step S1 of heating the ingot and the forging tool includes:

Preferably, the step S1 of heating the ingot and the tool for forging further includes:

Preferably, the length of the cast ingot is 370 +/-10 mm, the width of the cast ingot is 1290 +/-10 mm, and the height of the cast ingot is 2100 +/-10 mm; in step S3, the forging step includes:

drawing the A square until the width and the height of the A surface are both 900 +/-10 mm; the length of the C surface is 1600 +/-10 mm;

upsetting the A until the height of the A surface is 800-810 mm;

drawing the C square until the width and the height of the surface C are both 900 +/-20 mm, and the length of the surface A is 1600 +/-10 mm;

chamfering and rounding the C surface, wherein the distance from two opposite sides to the C surface is 960 +/-20 mm;

upsetting the C until the height of the C surface is 850 +/-10 mm;

the diameter from the round flat end to the ingot is 1240-1260mm, and the length is 1000-1050 mm.

Preferably, the step of lengthening the A square comprises: upsetting C to 1200mm in height, upsetting B to 800mm in height, upsetting C to 900mm in height, and upsetting B to 900mm in height;

the step of lengthening the C square comprises the following steps: thickening the pier B until the height of the surface B is 900 mm; upsetting the A until the height of the A surface is 900 mm.

Preferably, the step S4 includes:

Preferably, the step S5 includes:

Preferably, the step S6 includes:

heating a forging tool: the temperature of the tool heating furnace is fixed to be 450 +/-10 ℃, and the heating time of the core rod and the small flat anvil is more than or equal to 10 hours;

Preferably, the step S6 further includes:

Preferably, the mass percentage of the copper element in the ingot is as follows: cu is more than or equal to 1.5 and less than or equal to 2.1, and the mass percentage of the zinc element is as follows: zn is more than or equal to 7.2 and less than or equal to 8.1, and the mass percentage of the copper element of the magnesium element is as follows: mg is more than or equal to 1.4 and less than or equal to 2.0.

The 7085 alloy high cylinder ring piece forming process provided by the invention comprises the following steps: step S1: obtaining an ingot, and heating the ingot and a forging tool; step S2: carrying out first fire forging on the cast ingot, wherein the forging starting temperature is 430-460 ℃, the finish forging temperature is more than or equal to 350 ℃, and the using temperature of a die is 250-420 ℃; step S3: marking the length end of the cast ingot with A, marking the side surface with B, and marking the other surface which is vertical to the A surface and the B surface with C; forging and cogging the ingot according to a forging process to obtain a blank, wherein the forging process comprises the following steps: squaring and drawing out the surface A; upsetting the surface A; squaring and drawing out the C surface; chamfering and rounding the C surface; upsetting the C surface; rounding and flattening the end; step S4: backward extruding the billet; step S5: machining the blank for the first time to a preset size; step S6: heating the blank and reaming the hole; step S7: and carrying out secondary machining on the blank after hole expansion to reach the target size. According to the 7085 alloy high-cylinder ring piece forming process, the cast ingot is forged, cogging, extrusion, primary machining, heating before reaming, reaming and secondary machining, so that the forming process from the cast ingot to the alloy high-cylinder ring piece is completed, the forming quality of the 7085 alloy high-cylinder ring piece can be effectively improved, and the use requirement is met.

In a preferred embodiment, the mass percentage of the copper element in the ingot is as follows: cu is more than or equal to 1.5 and less than or equal to 2.1, and the mass percentage of the zinc element is as follows: zn is more than or equal to 7.2 and less than or equal to 8.1, and the mass percentage of the copper element of the magnesium element is as follows: mg is more than or equal to 1.4 and less than or equal to 2.0. Compared with the existing 7085 alloy ingot, the ingot belongs to a modified 7085 ingot, and the process provided by the invention can meet the quality requirement of the modified 7085 alloy high-cylinder ring.

Drawings

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

FIG. 1 is a flow chart of one embodiment of a 7085 alloy high-cylinder ring forming process provided by the present invention;

fig. 2 is a forging process diagram of a 7085 alloy high-cylinder ring forming process provided by the invention.

Detailed Description

The core of the invention is to provide a 7085 alloy high cylinder ring molding process for improving molding quality.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and fig. 2, fig. 1 is a flow chart of an embodiment of a 7085 alloy high cylinder ring forming process provided in the present invention; fig. 2 is a forging process diagram of a 7085 alloy high-cylinder ring forming process provided by the invention.

In this embodiment, the 7085 alloy high barrel ring forming process comprises the following steps:

step S1: obtaining an ingot, and heating the ingot and a forging tool; wherein the chemical composition of the ingot conforms to the requirements of Q/SWAJ2005-2019, and the ingot quality is as follows: primary oxidation film, primary loosening and even fire treatment;

step S3: marking the length end of the cast ingot with A, marking the side surface with B, and marking the other surface which is vertical to the A surface and the B surface with C, namely marking the three surfaces which are vertical to each other of the cast ingot with the A surface, the B surface and the C surface respectively; forging and cogging the ingot according to a forging process to obtain a blank, wherein the forging process comprises the following steps: squaring and drawing out the surface A; upsetting the surface A; squaring and drawing out the C surface; chamfering and rounding the C surface; upsetting the C surface; rounding and flattening the end; preferably, a 1 ten thousand ton hydraulic press matched flat anvil is adopted for forging and cogging;

step S4: carrying out backward extrusion on the blank;

step S5: machining the blank for the first time to a preset size;

step S6: heating the blank and reaming;

step S7: and carrying out secondary machining on the reamed blank to reach the target size.

According to the 7085 alloy high-cylinder ring piece forming process, the cast ingot is forged, cogging, extrusion, primary machining, heating before reaming, reaming and secondary machining are carried out, the forming process from the cast ingot to the alloy high-cylinder ring piece is completed, the forming quality of the 7085 alloy high-cylinder ring piece can be effectively improved, and the using requirements are met.

In addition to the above embodiments, the step S1 of heating the ingot and the forging tool includes:

In addition to the above embodiments, the step S1 of heating the ingot and the forging tool further includes:

heating the forging tool by a tool heating furnace to a fixed temperature of 430-470 ℃, wherein the heating time of the middle anvil is more than or equal to 12 hours; the heating time of the backward extrusion upper die and the backward extrusion lower die is more than or equal to 16 hours. Specifically, the size of the backward extrusion upper die is phi 500 x 2000mm, the backward extrusion rod is provided with a 650 working tape, and the lower die is a 7085 barrel section backward extrusion die.

On the basis of the above embodiments, the length of the ingot is 370 + -10 mm, the width is 1290 + -10 mm, and the height is 2100 + -10 mm; in step S3, as shown in fig. 2, the forging step includes:

step 1): drawing the A square until the width and the height of the A surface are both 900 +/-10 mm; the length of the C surface is 1600 +/-10 mm;

step 2): upsetting the A until the height of the A surface is 800-810 mm;

step 3): drawing the C square until the width and the height of the surface C are both 900 +/-20 mm, and the length of the surface A is 1600 +/-10 mm;

step 4): chamfering and rounding the C surface, wherein the distance from two opposite sides to the C surface is 960 +/-20 mm;

step 5): upsetting the C until the height of the C surface is 850 +/-10 mm;

step 6): the diameter from the round flat end to the ingot is 1240-1260mm, and the length is 1000-1050 mm.

In addition to the above embodiments, the step of lengthening the square by a comprises: upsetting C to 1200mm in height, upsetting B to 800mm in height, upsetting C to 900mm in height, and upsetting B to 900mm in height;

the step of drawing out the C square comprises the following steps: thickening the pier B until the height of the surface B is 900 mm; upsetting the A until the height of the A surface is 900 mm.

In addition to the above embodiments, step S4 includes:

In addition to the above embodiments, step S5 includes:

In addition to the above embodiments, step S6 includes:

heating a forging tool: the temperature of the tool heating furnace is fixed to be 450 +/-10 ℃, and the heating time of the core rod and the small flat anvil is more than or equal to 10 hours. Specifically, the size of the mandrel is Φ 500 × 3500 mm.

And (3) reaming the blank by adopting a 10000-ton hydraulic press and a 3T forging vehicle: the open forging temperature is 430-460 ℃, the finish forging temperature is more than or equal to 350 ℃, and the service temperature of tools and dies is 300-420 ℃; specifically, an upper die of a 10000-ton hydraulic press is provided with 1600 × 1600 small flat anvils or flat anvils and a middle trestle, and the trestle needs to be fixed by tools such as bolts.

In addition to the above embodiments, step S6 further includes:

In addition to the above embodiments, the target sizes in step S7 are: the outer diameter is 2300-.

On the basis of the above embodiments, the mass percentage of the copper element in the ingot is as follows: cu is more than or equal to 1.5 and less than or equal to 2.1, and the mass percentage of the zinc element is as follows: zn is more than or equal to 7.2 and less than or equal to 8.1, and the mass percentage of the copper element of the magnesium element is as follows: mg is more than or equal to 1.4 and less than or equal to 2.0. Compared with the existing 7085 alloy ingot, the ingot belongs to a modified 7085 ingot, and the process provided by the invention can meet the quality requirement of the modified 7085 alloy high-cylinder ring.

The 7085 alloy high-cylinder ring piece forming process provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

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