CN106378369B - Aluminum alloy pipe hot bending forming temperature indication paste and bending forming method - Google Patents
Aluminum alloy pipe hot bending forming temperature indication paste and bending forming method Download PDFInfo
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- CN106378369B CN106378369B CN201610916603.5A CN201610916603A CN106378369B CN 106378369 B CN106378369 B CN 106378369B CN 201610916603 A CN201610916603 A CN 201610916603A CN 106378369 B CN106378369 B CN 106378369B
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- aluminum alloy
- alloy pipe
- temperature indicating
- paste
- indicating paste
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
- B21D7/162—Heating equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/16—Auxiliary equipment, e.g. machines for filling tubes with sand
- B21D9/18—Auxiliary equipment, e.g. machines for filling tubes with sand for heating or cooling of bends
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention provides a temperature indicating paste for hot bending forming of an aluminum alloy pipe and a bending forming method. According to the temperature indicating paste for hot bending forming of the aluminum alloy pipe and the bending method using the temperature indicating paste, the temperature indicating paste is coated on the front face of the to-be-bent part of the aluminum alloy pipe, flame heating is carried out on a coating area of the to-be-bent part by using an alcohol blast burner and the like in the bending process, a proper heating temperature interval is confirmed according to the color change of the temperature indicating paste, then bending forming is carried out, hot bending forming of the aluminum alloy pipe is achieved, the risk of cracking of the pipe caused by too low or too high heating temperature is avoided, operation is simple, and applicability is strong.
Description
Technical Field
The invention relates to the field of pipe plastic processing, in particular to a temperature indicating paste for hot bending forming of an aluminum alloy pipe and a bending method using the temperature indicating paste.
Background
The pipe bending forming is a plastic processing process of bending a pipe blank into a pipe with a certain bending radius, a certain bending angle and a certain shape. With the development of computer technology and numerical control technology, the numerical control technology is adopted to realize the bending forming of the pipe to gradually replace manual pipe bending.
In recent years, bent pipe parts in the fields of aerospace, aerospace and the like are more and more widely used, and particularly, aluminum alloy pipes are applied. Due to the structural design characteristics of aerospace products, extremely individual pipes with too small bending radius can appear in production, conventional numerical control pipe bending equipment cannot be adopted, manual hot bending forming is generally adopted for processing, namely, an alcohol blast burner is used for moving and regionally heating a to-be-bent part of the pipe to a certain temperature, and the pipe is manually bent to be formed. Because the heating range is regional, and flame moves for constantly simultaneously, can't come the representation with infrared temperature measurement pen fixed point measured data, and the temperature interval that is fit for carrying out aluminum alloy tubular product bending in the bending forming process is difficult to directly perceived, simple accuse, and it is too low or too high often to appear heating temperature, causes the tubular product bending to appear the fracture or can't take shape scheduling problem.
In conclusion, the method for intuitively and simply identifying the temperature interval suitable for the hot bending forming of the aluminum alloy pipe is developed, and the method has very important significance on the bending quality and the reliability of the hot bending forming of the aluminum alloy pipe.
Disclosure of Invention
In order to solve the technical problem, the invention provides a temperature indicating paste for hot bending forming of an aluminum alloy pipe. The technical scheme adopted by the invention is as follows:
The temperature indicating paste is formed by melting and solidifying daily soap, beef tallow, rape oil and water, and the color of the temperature indicating paste changes when the temperature indicating paste is heated.
Further, the daily soap, the beef tallow, the rape oil and the water respectively comprise the following components in percentage by weight: the daily soap accounts for 40-50%, the beef tallow accounts for 10-20%, the rape oil accounts for 10-20%, and the balance is water.
Further, the temperature indication paste is yellow at normal temperature, when the temperature indication paste is heated to a temperature range suitable for hot bending forming of the aluminum alloy pipe, the color of the temperature indication paste is changed from yellow to black, and when the color of the temperature indication paste is changed from black to white, heating is stopped.
A bending forming method of an aluminum alloy pipe comprises the following steps:
Step 1: uniformly coating the temperature indicating paste on the surface to be bent and formed of the aluminum alloy pipe;
Step 2: carrying out flame heating on a to-be-bent part of the aluminum alloy pipe;
And step 3: after the color of the temperature indicating paste prompts that the temperature indicating paste enters a temperature interval suitable for bending forming, bending forming is carried out on the aluminum alloy pipe;
And 4, step 4: after the aluminum alloy pipe formed by bending is qualified, the surface of the aluminum alloy pipe is wiped, and the surface temperature indicating paste is wiped off, so that the cleanness of the aluminum alloy pipe is ensured.
Further, in the step 1, the temperature indicating paste is uniformly coated on the front surface of the part to be bent and formed of the aluminum alloy pipe, and the coating area is larger than the area to be bent.
Further, in step 2, the flame heating area should be strictly controlled to avoid exceeding the coating area.
Further, in the step 3, the color of the temperature indicating paste is prompted to enter a temperature interval suitable for bending forming, when the color of the temperature indicating paste is changed from yellow to black, the aluminum alloy pipe is bent and formed, and when the color of the temperature indicating paste is changed from black to white, the flame heating is stopped.
Drawings
FIG. 1 is a flow chart of a bending method using the temperature indicating paste of the present invention;
FIG. 2 is a drawing of an aluminum alloy tube product bent and formed using the temperature indicating paste of the present invention.
Detailed Description
The invention will now be further described with reference to the following examples and drawings:
The invention provides a temperature indicating paste for hot bending forming of an aluminum alloy pipe, which is prepared from 40-50 wt% of daily soap, 10-20 wt% of beef tallow, 10-20 wt% of rape oil and the balance of water. The temperature indication paste is formed by smelting and solidifying, the normal temperature state is yellow, when the temperature indication paste is heated to a temperature range suitable for hot bending forming of the aluminum alloy pipe, the color is changed from yellow, and when the temperature exceeds the suitable range, the color is further changed.
As shown in figures 1 and 2, the temperature indicating paste used in this example comprises, by weight, 45% of daily soap, 15% of beef tallow, 20% of rape oil, and the balance water.
The aluminum alloy pipe bending forming method using the temperature indication paste comprises the following process steps:
Step 1: the temperature indicating paste is uniformly coated on the surface to be bent and formed of the aluminum alloy pipe 1, and the coating range 2 is required to contain the front area of the pipe to be bent.
Step 2: and (3) carrying out flame heating on the to-be-bent part of the aluminum alloy pipe by adopting an alcohol burner and the like, wherein the range 3 of the flame heating is required not to exceed the coating range 2.
And step 3: after the color of the temperature indication paste coated at the position to be bent is prompted to enter a proper temperature interval, the aluminum alloy pipe is required to be bent and formed when the color of the temperature indication paste is changed from yellow to black, and when the local color of the temperature indication paste is white, the heating is stopped.
And fourthly, after the hot-bending formed pipe is qualified, dipping alcohol by using silk cloth to wipe the coating area, removing the temperature indicating paste at the bending part, and ensuring that the product is clean.
It should be noted that the foregoing is only illustrative and illustrative of the present invention, and that any modifications and alterations to the present invention are within the scope of the present invention as those skilled in the art will recognize.
Claims (6)
1. The aluminum alloy pipe hot bending forming temperature indicating paste is characterized by being formed by melting and solidifying daily soap, beef tallow, rape oil and water, and the color of the temperature indicating paste changes when the temperature indicating paste is heated;
The daily soap, the beef tallow, the rape oil and the water respectively comprise the following components in percentage by weight: the daily soap accounts for 40-50%, the beef tallow accounts for 10-20%, the rape oil accounts for 10-20%, and the balance is water.
2. The temperature indicating paste according to claim 1, wherein the temperature indicating paste is yellow at normal temperature, the color of the temperature indicating paste is changed from yellow to black when the paste is heated to a temperature range suitable for hot bending forming of the aluminum alloy pipe, and the heating is stopped when the color of the temperature indicating paste is changed from black to white.
3. A bending method of an aluminum alloy pipe using the temperature indicating paste according to claim 1, comprising the steps of:
Step 1: uniformly coating the temperature indicating paste on the surface to be bent and formed of the aluminum alloy pipe;
Step 2: carrying out flame heating on a to-be-bent part of the aluminum alloy pipe;
And step 3: after the color of the temperature indicating paste prompts that the temperature indicating paste enters a temperature interval suitable for bending forming, bending forming is carried out on the aluminum alloy pipe;
And 4, step 4: after the aluminum alloy pipe formed by bending is qualified, the surface of the aluminum alloy pipe is wiped, and the surface temperature indicating paste is wiped off, so that the cleanness of the aluminum alloy pipe is ensured.
4. The aluminum alloy pipe bending method according to claim 3, wherein in the step 1, the temperature indicating paste is uniformly applied to the front surface of the aluminum alloy pipe to be bent, and the application area is larger than the area to be bent.
5. The aluminum alloy pipe bending method according to claim 3, wherein in the step 2, the flame heating area is strictly controlled to avoid exceeding the coating area.
6. The aluminum alloy pipe bending method according to claim 3, wherein in the step 3, the color of the temperature indicating paste is prompted to enter a temperature range suitable for bending, when the color of the temperature indicating paste is changed from yellow to black, the aluminum alloy pipe is subjected to bending, and when the color of the temperature indicating paste is changed from black to white, the flame heating is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610916603.5A CN106378369B (en) | 2016-10-21 | 2016-10-21 | Aluminum alloy pipe hot bending forming temperature indication paste and bending forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610916603.5A CN106378369B (en) | 2016-10-21 | 2016-10-21 | Aluminum alloy pipe hot bending forming temperature indication paste and bending forming method |
Publications (2)
| Publication Number | Publication Date |
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| CN106378369A CN106378369A (en) | 2017-02-08 |
| CN106378369B true CN106378369B (en) | 2020-07-17 |
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| CN201610916603.5A Active CN106378369B (en) | 2016-10-21 | 2016-10-21 | Aluminum alloy pipe hot bending forming temperature indication paste and bending forming method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110814118A (en) * | 2019-12-06 | 2020-02-21 | 浙江盛达铁塔有限公司 | Angle aluminum bending method |
Citations (6)
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|---|---|---|---|---|
| JP2009291820A (en) * | 2008-06-06 | 2009-12-17 | Mazda Motor Corp | Hot bending method of metal tube, and its apparatus |
| CN102494351A (en) * | 2011-11-16 | 2012-06-13 | 神华集团有限责任公司 | Combustion furnace and method for monitoring inner lining of combustion furnace |
| CN102886400A (en) * | 2012-10-25 | 2013-01-23 | 盈都桥梁钢构工程有限公司 | Hot work bending technology for spatial hyperbolic circular tube |
| CN103264076A (en) * | 2013-04-26 | 2013-08-28 | 中山大学 | Heat pipe bending method and heat pipe bending production device |
| CN103861912A (en) * | 2012-12-13 | 2014-06-18 | 北京有色金属研究总院 | Aluminum alloy pipe bend forming method |
| CN104550371A (en) * | 2014-11-26 | 2015-04-29 | 衡阳风顺车桥有限公司 | Aluminum alloy pipe bending method |
-
2016
- 2016-10-21 CN CN201610916603.5A patent/CN106378369B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009291820A (en) * | 2008-06-06 | 2009-12-17 | Mazda Motor Corp | Hot bending method of metal tube, and its apparatus |
| CN102494351A (en) * | 2011-11-16 | 2012-06-13 | 神华集团有限责任公司 | Combustion furnace and method for monitoring inner lining of combustion furnace |
| CN102886400A (en) * | 2012-10-25 | 2013-01-23 | 盈都桥梁钢构工程有限公司 | Hot work bending technology for spatial hyperbolic circular tube |
| CN103861912A (en) * | 2012-12-13 | 2014-06-18 | 北京有色金属研究总院 | Aluminum alloy pipe bend forming method |
| CN103264076A (en) * | 2013-04-26 | 2013-08-28 | 中山大学 | Heat pipe bending method and heat pipe bending production device |
| CN104550371A (en) * | 2014-11-26 | 2015-04-29 | 衡阳风顺车桥有限公司 | Aluminum alloy pipe bending method |
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| CN106378369A (en) | 2017-02-08 |
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