CN101733314B - Elbow pipe processing technology - Google Patents
Elbow pipe processing technology Download PDFInfo
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- CN101733314B CN101733314B CN2009102342888A CN200910234288A CN101733314B CN 101733314 B CN101733314 B CN 101733314B CN 2009102342888 A CN2009102342888 A CN 2009102342888A CN 200910234288 A CN200910234288 A CN 200910234288A CN 101733314 B CN101733314 B CN 101733314B
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- processing technology
- elbow pipe
- pipe processing
- heat treatment
- moulding
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses an elbow pipe processing technology, comprising the step of annealing heat treatment and the step of placement in a mould for push molding, which are both for workpiece, after the annealing heat treatment, the workpiece is cooled to 250 to 400 DEG C and placed in the mould for push molding, wherein the optimal temperature is about 300 DEG C. The elbow pipe processing technology is simple in operation and easy in implementation, and can enhance the rate of finished product and lower the cost to a great extent. The elbow pipe processing technology is suitable for the molding of elbow fittings with 6'' to 12'' of aperture.
Description
Technical field
The invention belongs to field of machining, relate to a kind of elbow pipe processing technology, a kind ofly specifically be used for 6 "～12 " the bend pipe tools processing technology of bore.
Background technology
At present, the main method of bend pipe moulding both at home and abroad is pushing moulding and HALF welding fabrication, and seamless pipe then all adopts the pushing moulding.This just needs the pushing technology that maturation is complete.
In general inside nominal diameter 6 " about the pipe fitting raw material enter factory and review earlier; review qualified back and carry out blanking, need during moulding earlier the raw material heat treatment of annealing is carried out coating after treating to cool off fully; the protection surface, put into mould pushing moulding then according to dimensional requirement.But this processing technology is in processing 6 "～12 " but there is following shortcoming during the elbow of bore: the inner arc afterbody very easily ftractures in forming process, and ratio of briquetting only has about 65%, and scrappage is serious, and the waste of material phenomenon is extremely obvious, and cost is very high.
Summary of the invention
In order to overcome the problem that existing processing technology exists, the purpose of this invention is to provide and a kind ofly be used for 6 "～12 " processing technology of the bend pipe tools moulding of bore, this processing technology is simple to operate, realizes easily, can improve yield rate significantly, reduces cost.
The objective of the invention is to be achieved through the following technical solutions:
A kind of elbow pipe processing technology comprises anneal heat treatment step and put into mould pushing forming step of workpiece, it is characterized in that: after annealing heat treatment, work-piece cools to 250 ℃～400 ℃ is put into mould pushing moulding.
Among the present invention, work-piece cools to 250 ℃～300 ℃ can be put into mould pushing moulding.Wherein optimum temperature is about 300 ℃.
Consider that cold scrappage is than higher when pushing into type, the present invention carries out the pushing moulding under band uniform temperature condition, do not need to carry out face coat.Among the present invention, the temperature during moulding is crucial, and requirement inner arc afterbody in forming process can not ftracture, and also will guarantee the intensity of moulding back elbow simultaneously.In order to determine optimum temperature, by computer simulation, repeatedly determine that temperature range moulding qualification rate in 250 ℃～300 ℃ temperature ranges is very high after the practice and exploring.
The present invention is adjusted into original cool to room temperature moulding on cold extrusion annealing heat treatment basis and is cooled to 300 ℃ of moulding, so not only can guarantee Forming Quality but also can degree of keeping clean, reduce and pollute, reduce cost simultaneously, and prolonged the service life of equipment.
Compared with prior art, the present invention has the following advantages:
1, temperature is selected rationally, below heat treatment temperature, and easy operating;
2, easy to use, the moulding required thrust reduces during hot pressing, alleviates equipment pressure, has guaranteed the normal operation of machine;
3, can save coating, consumptive material uses and reduces, and has improved operating efficiency;
4, qualification rate reaches more than 95%, has improved yield rate greatly, reduces cost.
The specific embodiment
Embodiment 1
A kind ofly of the present inventionly be used for 6 "～12 " elbow pipe processing technology of bore, comprise anneal heat treatment step and put into mould pushing forming step of workpiece, after blanking annealing heat treatment,, directly put into mould pushing moulding with work-piece cools to 250 ℃.
Embodiment 2
Another is of the present invention to be used for 6 "～12 " elbow pipe processing technology of bore, comprise anneal heat treatment step and put into mould pushing forming step of workpiece, after blanking annealing heat treatment,, directly put into mould pushing moulding with work-piece cools to 300 ℃.
Embodiment 3
Another is of the present invention to be used for 6 "～12 " elbow pipe processing technology of bore, comprise anneal heat treatment step and put into mould pushing forming step of workpiece, after blanking annealing heat treatment,, directly put into mould pushing moulding with work-piece cools to 350 ℃.
Embodiment 4
Another is of the present invention to be used for 6 "～12 " elbow pipe processing technology of bore, comprise anneal heat treatment step and put into mould pushing forming step of workpiece, after blanking annealing heat treatment,, directly put into mould pushing moulding with work-piece cools to 400 ℃.
The bend pipe that the present invention obtains, Forming Quality is good, can degree of keeping clean, reduce and pollute; Reduce cost simultaneously, and prolonged the service life of equipment.
Claims (3)
1. one kind 6 "～12 " the bore elbow pipe processing technology, comprise anneal heat treatment step and put into mould pushing forming step of workpiece, it is characterized in that: after annealing heat treatment, work-piece cools to 250 ℃～400 ℃ is put into mould pushing moulding.
2. according to claim 1 a kind of 6 "～12 " bore elbow pipe processing technology is characterized in that: work-piece cools to 250 ℃～300 ℃ is put into mould pushing moulding.
3. according to claim 1 a kind of 6 "～12 " bore elbow pipe processing technology is characterized in that: work-piece cools to 300 ℃ is put into mould pushing moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102342888A CN101733314B (en) | 2009-11-17 | 2009-11-17 | Elbow pipe processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102342888A CN101733314B (en) | 2009-11-17 | 2009-11-17 | Elbow pipe processing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101733314A CN101733314A (en) | 2010-06-16 |
| CN101733314B true CN101733314B (en) | 2011-08-10 |
Family
ID=42457635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102342888A Active CN101733314B (en) | 2009-11-17 | 2009-11-17 | Elbow pipe processing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101733314B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102806446B (en) * | 2012-09-03 | 2014-12-17 | 贵州安吉航空精密铸造有限责任公司 | Machining method for molds |
-
2009
- 2009-11-17 CN CN2009102342888A patent/CN101733314B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101733314A (en) | 2010-06-16 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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