CN104801929A - Valve cap manufacturing technology - Google Patents
Valve cap manufacturing technology Download PDFInfo
- Publication number
- CN104801929A CN104801929A CN201510162568.8A CN201510162568A CN104801929A CN 104801929 A CN104801929 A CN 104801929A CN 201510162568 A CN201510162568 A CN 201510162568A CN 104801929 A CN104801929 A CN 104801929A
- Authority
- CN
- China
- Prior art keywords
- forging
- blank
- valve gap
- heating
- forge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/20—Making machine elements valve parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a valve cap manufacturing technology employing a die forging technique. The valve cap manufacturing technology specifically comprises the following steps: firstly putting a blank material into a forging furnace for being heated; and then putting the blank material heated in the forging furnace into a valve cap forging die for being forged and molded. By such means, the weight of the blank material is reduced by 20%-30% through die forging the valve cap in this technology, accordingly the cost of the blank material for the valve cap is greatly reduced; with few allowance for mechanical machining, the cost of the mechanical machining is also reduced by 20%-25%.
Description
Technical field
The present invention relates to export-oriented petroleum pipeline valve field, especially relate to a kind of valve gap manufacturing process.
Background technology
Existing valve gap manufacturing process mainly comprises: 1, forge valve gap blank by flat-die forging (not open die forging), and 2, by die sinking cast blank, but in process, there is many weak points all separately in these two kinds of techniques.
The weak point of being forged valve gap blank by flat-die forging (not open die forging) is that blank cost wasted by open die forging (not open die forging), strengthens machining operations amount.
Occur sand-cast hole unavoidably by the weak point cast member blank of die sinking cast blank, blank loosens, and the problems such as blank Density inhomogeneity, have a strong impact on valve gap precision.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of valve gap manufacturing process, and this technique is forged valve gap blank by die sinking and alleviated billet weight, reduces machining cost.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: valve gap manufacturing process, adopts contour forging technique, is specially: blank is first put into forge furnace heating, then the blank after heating in forge furnace is put into valve gap forge mould forging and molding.
In a preferred embodiment of the present invention, concrete steps comprise:
Saw material: calculate required weight, carries out saw material by blank by the weight calculated;
Blank enters stove heating: blank is added forge furnace and heats;
Mould forges: poured in valve gap forge mould by the blank after heating and carry out forging molding;
Cooling: the forging stock of forging molding is put in atmosphere, makes it naturally cool;
Inspection: the inspection of size is carried out to the forging stock cooled and observes its outward appearance and whether have and subside;
Warehouse-in: the forging stock be up to the standards is installed warehouse-in.
In a preferred embodiment of the present invention, described blank enters in stove heating steps to control heating-up temperature 1250 DEG C ~ 1500 DEG C, continues 1.8 hours ~ 2.2 hours.
In a preferred embodiment of the present invention, preferred described blank enters in stove heating steps to control heating-up temperature 1375 DEG C, continues 2 hours.
In a preferred embodiment of the present invention, in described mould forging step, 1500T friction press is used to forge.
The invention has the beneficial effects as follows: valve gap manufacturing process of the present invention, this technique reduces billet weight 20%-30% by valve gap open die forging, and greatly reduce the blank cost of valve gap, machine-finish allowance is few, and machining cost decreases 20%-25%.
Accompanying drawing explanation
Fig. 1 is the valve gap warm and hot forging flow chart of valve gap manufacturing process of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Refer to Fig. 1, the embodiment of the present invention comprises:
Embodiment 1
The concrete steps manufacturing the valve gap of 150kg weight comprise:
Saw material: A105 carbon steel is carried out saw material by the weight of 200kg;
Blank enters stove heating: blank is added forge furnace and heats, described blank enters in stove heating steps to control heating-up temperature 1300 DEG C, continues 1.9 hours;
Mould forges: pour in valve gap forge mould by the blank after heating, uses 1500T friction press to carry out forging molding;
Cooling: the forging stock of forging molding is put in atmosphere, makes it naturally cool;
Inspection: the inspection of size is carried out to the forging stock cooled and observes its outward appearance and whether have and subside;
Warehouse-in: the forging stock be up to the standards is installed warehouse-in.
Embodiment 2
The concrete steps manufacturing the valve gap of 300kg weight comprise:
Saw material: A105 carbon steel is carried out saw material by the weight of 400kg;
Blank enters stove heating: blank is added forge furnace and heats, described blank enters in stove heating steps to control heating-up temperature 1375 DEG C, continues 2 hours;
Mould forges: pour in valve gap forge mould by the blank after heating, uses 1500T friction press to carry out forging molding;
Cooling: the forging stock of forging molding is put in atmosphere, makes it naturally cool;
Inspection: the inspection of size is carried out to the forging stock cooled and observes its outward appearance and whether have and subside;
Warehouse-in: the forging stock be up to the standards is installed warehouse-in.
Embodiment 3
The concrete steps manufacturing the valve gap of 450kg weight comprise:
Saw material: A105 carbon steel is carried out saw material by the weight of 600kg;
Blank enters stove heating: blank is added forge furnace and heats, described blank enters in stove heating steps to control heating-up temperature 1450 DEG C, continues 2.1 hours;
Mould forges: pour in valve gap forge mould by the blank after heating, uses 1500T friction press to carry out forging molding;
Cooling: the forging stock of forging molding is put in atmosphere, makes it naturally cool;
Inspection: the inspection of size is carried out to the forging stock cooled and observes its outward appearance and whether have and subside;
Warehouse-in: the forging stock be up to the standards is installed warehouse-in.
Compared with prior art, valve gap manufacturing process of the present invention, this technique reduces billet weight 20%-30% by valve gap open die forging, and greatly reduce the blank cost of valve gap, machine-finish allowance is few, and machining cost decreases 20%-25%.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.Blank enters stove heating: blank is added forge furnace and heats, described blank enters in stove heating steps to control heating-up temperature 1450 DEG C, continues 2.1 hours;
Mould forges: pour in valve gap forge mould by the blank after heating, uses 1500T friction press to carry out forging molding;
Cooling: the forging stock of forging molding is put in atmosphere, makes it naturally cool;
Inspection: the inspection of size is carried out to the forging stock cooled and observes its outward appearance and whether have and subside;
Warehouse-in: the forging stock be up to the standards is installed warehouse-in.
Compared with prior art, valve gap manufacturing process of the present invention, this technique reduces billet weight 20%-30% by valve gap open die forging, and greatly reduce the blank cost of valve gap, machine-finish allowance is few, and machining cost decreases 20%-25%.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. valve gap manufacturing process, is characterized in that, adopts contour forging technique, is specially: blank is first put into forge furnace heating, then the blank after heating in forge furnace is put into valve gap forge mould forging and molding.
2. valve gap manufacturing process according to claim 1, is characterized in that: concrete steps comprise:
Saw material: calculate required weight, carries out saw material by blank by the weight calculated;
Blank enters stove heating: blank is added forge furnace and heats;
Mould forges: poured in valve gap forge mould by the blank after heating and carry out forging molding;
Cooling: the forging stock of forging molding is put in atmosphere, makes it naturally cool;
Inspection: the inspection of size is carried out to the forging stock cooled and observes its outward appearance and whether have and subside;
Warehouse-in: the forging stock be up to the standards is installed warehouse-in.
3. valve gap manufacturing process according to claim 2, is characterized in that: described blank enters in stove heating steps to control heating-up temperature 1250 DEG C ~ 1500 DEG C, continues 1.8 hours ~ 2.2 hours.
4. valve gap manufacturing process according to claim 3, is characterized in that: preferred described blank enters in stove heating steps to control heating-up temperature 1375 DEG C, continues 2 hours.
5. valve gap manufacturing process according to claim 2, is characterized in that: use 1500T friction press to forge in described mould forging step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162568.8A CN104801929A (en) | 2015-04-08 | 2015-04-08 | Valve cap manufacturing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162568.8A CN104801929A (en) | 2015-04-08 | 2015-04-08 | Valve cap manufacturing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104801929A true CN104801929A (en) | 2015-07-29 |
Family
ID=53687343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510162568.8A Pending CN104801929A (en) | 2015-04-08 | 2015-04-08 | Valve cap manufacturing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104801929A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344900A (en) * | 2015-11-19 | 2016-02-24 | 江苏利普机械有限公司 | Forging process for lock case |
| CN106826108A (en) * | 2016-12-26 | 2017-06-13 | 常熟市惠机电有限公司 | A kind of preparation method of high temp.-resistant valve connector |
| CN107398525A (en) * | 2017-07-25 | 2017-11-28 | 苏州市鑫渭阀门有限公司 | The casting method of high-strength valve cover |
| CN111570692A (en) * | 2020-05-19 | 2020-08-25 | 强大阀门集团有限公司 | Forming process of large-diameter integrally forged gate valve |
-
2015
- 2015-04-08 CN CN201510162568.8A patent/CN104801929A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344900A (en) * | 2015-11-19 | 2016-02-24 | 江苏利普机械有限公司 | Forging process for lock case |
| CN106826108A (en) * | 2016-12-26 | 2017-06-13 | 常熟市惠机电有限公司 | A kind of preparation method of high temp.-resistant valve connector |
| WO2018119629A1 (en) * | 2016-12-26 | 2018-07-05 | 常熟市惠一机电有限公司 | Manufacturing method for high temperature-resistant valve connector |
| CN107398525A (en) * | 2017-07-25 | 2017-11-28 | 苏州市鑫渭阀门有限公司 | The casting method of high-strength valve cover |
| CN111570692A (en) * | 2020-05-19 | 2020-08-25 | 强大阀门集团有限公司 | Forming process of large-diameter integrally forged gate valve |
| CN111570692B (en) * | 2020-05-19 | 2023-01-24 | 强大阀门集团有限公司 | Forming process of large-diameter integrally forged gate valve |
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| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150729 |
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| WD01 | Invention patent application deemed withdrawn after publication |