CN107626878A - The forging method of valve body - Google Patents
The forging method of valve body Download PDFInfo
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- CN107626878A CN107626878A CN201710720555.7A CN201710720555A CN107626878A CN 107626878 A CN107626878 A CN 107626878A CN 201710720555 A CN201710720555 A CN 201710720555A CN 107626878 A CN107626878 A CN 107626878A
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- valve body
- heating
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- material section
- blocking
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Abstract
The invention discloses a kind of forging method of valve body, it is related to machinery manufacturing technology field；Comprise the following steps：Blanking, heating, preforming, reheating, blocking, finish forge, trimming etc..Uneven microstructure that the present invention can solve the problems, such as to occur in current valve body forging technology, precision is low and production cost is high.
Description
Technical field
The present invention relates to field of automobile, especially a kind of forging method of valve body.
Background technology
Valve is the control unit in fluid delivery system, has cut-off, regulation, water conservancy diversion, non-return, voltage stabilizing, shunting and overflows
Flow the functions such as pressure；Valve can be used for control air, water vapour, various Korrosionsmediums, mud, oil product, liquid metal and put
The flowing of all types of fluids such as penetrating property medium；Because valve is often in more severe condition of work, and bear gasoline, diesel oil etc.
The high temperature corrosion of combustion gas and punching south, and the valve friction with valve seat in itself；Therefore, valve material must possess works in highest
At a temperature of have enough heat resistances, elevated temperature corrosion resistant, inoxidizability, wearability and impact resistance.Weight of the valve body as valve
Part is wanted, it is mainly formed by valve steel forging, and valve steel typically selects A105 Steel materials, and its casting technique is as follows：Blanking,
Heating, blank shaping, blocking, finish forge, hot trimming, heat treatment etc.；Wherein blank shaping is to forge shaping, air by pneumatic hammer
Hammer into shape in the process that forges, typically break into blank by manually forging is positioned over below pneumatic hammer, this molding mode causes forging group
Knitting not enough uniformly, influences the quality of valve body；Moreover, pneumatic hammer can also cause to damage to forging, usually after fervent crack approach
Increase is repaired to there is the forging of damage to carry out the interim process of soldering together, and which adds production cost.
The content of the invention
It is an object of the invention to provide a kind of forging method of valve body, and it can solve to occur in current valve body forging technology
Uneven microstructure, precision it is low and the problem of production cost is high.
In order to solve the above problems, the technical solution adopted by the present invention is：Comprise the following steps：
1）Blanking：Bar is sawn into material section by given size with sawing machine；
2）Heating：Material section is put into heating furnace and heated, heating and temperature control is at 1150 DEG C ± 50 DEG C and holding 0.25 is small
When ~ 0.5 hour, it is ensured that material section internal and external temperature is uniform；
3）It is preforming：Material section after heating is put into mould and is carried out by forcing press preforming, material section shape is become valve body
Shape, control final forging temperature is at 900 DEG C more than+50 DEG C；
4）Reheat：Valve body blank after will be preforming is sent into heating furnace and carries out reheating, and heating and temperature control is at 1150 DEG C
± 50 DEG C and keep 0.15 hour ~ 0.3 hour；
5）Blocking：Valve body blank after reheating is subjected to blocking by friction press；
6）Finish forge：The valve body blank that blocking is crossed is subjected to finish forge by friction press, ensures valve body blank size；
7）Trimming：Valve body blank after finish forge is subjected to hot trimming by punch press, produces valve body forging.
In above technical scheme, further scheme can be：The step heating furnace is intermediate-frequency heating furnace.
Further：Step 3）Forcing press in preforming is 2500KN forcing presses.
Further：Step 5) blocking, 6) friction press described in finish forge are 6300KN double disk friction screw press.
By adopting the above-described technical solution, the present invention has the advantages that compared with prior art：
1st, the present invention makes valve body blank obtain more closely knit tissue and steady by processes such as preforming, blocking, finish forge and trimmings
Fixed size.
Embodiment
The present invention is further described with reference to embodiment：The technical solution adopted by the present invention is：Including following step
Suddenly：
1）Blanking：Bar is sawn into material section by given size with sawing machine；
2）Heating：Material section is put into intermediate frequency furnace and heated, heating and temperature control is at 1150 DEG C ± 50 DEG C and holding 0.25 is small
When ~ 0.5 hour, it is ensured that material section internal and external temperature is uniform；
3）It is preforming：Material section after heating is put into mould and is carried out by 2500KN forcing press preforming, becomes material section shape
Into the shape of valve body, control final forging temperature is at 900 DEG C more than+50 DEG C；
4）Reheat：Valve body blank after will be preforming, which is sent into intermediate frequency furnace, carries out reheating, and heating and temperature control is 1150
DEG C ± 50 DEG C and kept for 0.15 hour ~ 0.3 hour；
5）Blocking：Valve body blank after reheating is subjected to blocking by 6300KN double disk friction screw press；
6）Finish forge：The valve body blank that blocking is crossed is subjected to finish forge by 6300KN double disk friction screw press, ensures valve body blank
Size；
7）Trimming：Valve body blank after finish forge is subjected to hot trimming by punch press, produces valve body forging.
Claims (4)
- A kind of 1. forging method of valve body, it is characterised in that：Comprise the following steps：1）Blanking：Bar is sawn into material section by given size with sawing machine；2）Heating：Material section is put into heating furnace and heated, heating and temperature control is at 1150 DEG C ± 50 DEG C and holding 0.25 is small When ~ 0.5 hour, it is ensured that material section internal and external temperature is uniform；3）It is preforming：Material section after heating is put into mould and is carried out by forcing press preforming, material section shape is become valve body Shape, control final forging temperature is at 900 DEG C more than+50 DEG C；4）Reheat：Valve body blank after will be preforming is sent into heating furnace and carries out reheating, and heating and temperature control is at 1150 DEG C ± 50 DEG C and keep 0.15 hour ~ 0.3 hour；5）Blocking：Valve body blank after reheating is subjected to blocking by friction press；6）Finish forge：The valve body blank that blocking is crossed is subjected to finish forge by friction press, ensures valve body blank size；7）Trimming：Valve body blank after finish forge is subjected to hot trimming by punch press, produces valve body forging.
- 2. the forging method of valve body according to claim 1, it is characterised in that：The step heating furnace is heating in medium frequency Stove.
- 3. the forging method of valve body according to claim 1 or 2, it is characterised in that：Step 3）Forcing press in preforming For 2500KN forcing presses.
- 4. the forging method of valve body according to claim 3, it is characterised in that：Step 5) blocking, 6) rubbed described in finish forge Wiping forcing press is 6300KN double disk friction screw press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710720555.7A CN107626878A (en) | 2017-08-21 | 2017-08-21 | The forging method of valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710720555.7A CN107626878A (en) | 2017-08-21 | 2017-08-21 | The forging method of valve body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107626878A true CN107626878A (en) | 2018-01-26 |
Family
ID=61101057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710720555.7A Pending CN107626878A (en) | 2017-08-21 | 2017-08-21 | The forging method of valve body |
Country Status (1)
| Country | Link |
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| CN (1) | CN107626878A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193573A (en) * | 2019-06-12 | 2019-09-03 | 昆山众诚精密锻造有限公司 | A kind of forging technology of engine retarder gantry forging |
| CN110538951A (en) * | 2018-07-03 | 2019-12-06 | 温州中海阀门锻造有限公司 | valve body forging process |
| CN110560625A (en) * | 2018-07-03 | 2019-12-13 | 温州中海阀门锻造有限公司 | Valve body forging method |
| CN111573145A (en) * | 2020-04-08 | 2020-08-25 | 上海兴道锻造有限公司 | Push rod and forging process thereof |
Citations (7)
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|---|---|---|---|---|
| GB329359A (en) * | 1928-12-17 | 1930-05-19 | George Turton Platts & Co Ltd | Improvements in, and relating to, the manufacture of hollow metal bodies |
| CN102198481A (en) * | 2011-04-20 | 2011-09-28 | 大连大高阀门有限公司 | Technology for integrally forging valve with flange |
| CN103264137A (en) * | 2012-08-17 | 2013-08-28 | 大连大高阀门股份有限公司 | Flange ball valve body forging technology |
| CN104607881A (en) * | 2015-01-22 | 2015-05-13 | 江苏恒昊石油机械有限公司 | Forging technology for novel anti-cracking valve at low temperature |
| CN105397416A (en) * | 2015-12-01 | 2016-03-16 | 温州市研制阀门厂 | Forging method of valve |
| CN105665608A (en) * | 2015-12-25 | 2016-06-15 | 大连大高阀门股份有限公司 | Forging technique for nuclear-grade F91 valve body |
| CN106825376A (en) * | 2017-01-23 | 2017-06-13 | 温州电泰阀门有限公司 | A kind of valve body forging technology |
-
2017
- 2017-08-21 CN CN201710720555.7A patent/CN107626878A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB329359A (en) * | 1928-12-17 | 1930-05-19 | George Turton Platts & Co Ltd | Improvements in, and relating to, the manufacture of hollow metal bodies |
| CN102198481A (en) * | 2011-04-20 | 2011-09-28 | 大连大高阀门有限公司 | Technology for integrally forging valve with flange |
| CN103264137A (en) * | 2012-08-17 | 2013-08-28 | 大连大高阀门股份有限公司 | Flange ball valve body forging technology |
| CN104607881A (en) * | 2015-01-22 | 2015-05-13 | 江苏恒昊石油机械有限公司 | Forging technology for novel anti-cracking valve at low temperature |
| CN105397416A (en) * | 2015-12-01 | 2016-03-16 | 温州市研制阀门厂 | Forging method of valve |
| CN105665608A (en) * | 2015-12-25 | 2016-06-15 | 大连大高阀门股份有限公司 | Forging technique for nuclear-grade F91 valve body |
| CN106825376A (en) * | 2017-01-23 | 2017-06-13 | 温州电泰阀门有限公司 | A kind of valve body forging technology |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538951A (en) * | 2018-07-03 | 2019-12-06 | 温州中海阀门锻造有限公司 | valve body forging process |
| CN110560625A (en) * | 2018-07-03 | 2019-12-13 | 温州中海阀门锻造有限公司 | Valve body forging method |
| CN110538951B (en) * | 2018-07-03 | 2021-03-16 | 温州中海阀门锻造有限公司 | Valve body forging process |
| CN110193573A (en) * | 2019-06-12 | 2019-09-03 | 昆山众诚精密锻造有限公司 | A kind of forging technology of engine retarder gantry forging |
| CN111573145A (en) * | 2020-04-08 | 2020-08-25 | 上海兴道锻造有限公司 | Push rod and forging process thereof |
| CN111573145B (en) * | 2020-04-08 | 2021-08-03 | 上海兴道锻造有限公司 | Push rod and forging process thereof |
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Application publication date: 20180126 |