CN104607581B - A kind of deep hole one-time formed method of valve endoporus - Google Patents
A kind of deep hole one-time formed method of valve endoporus Download PDFInfo
- Publication number
- CN104607581B CN104607581B CN201510058785.2A CN201510058785A CN104607581B CN 104607581 B CN104607581 B CN 104607581B CN 201510058785 A CN201510058785 A CN 201510058785A CN 104607581 B CN104607581 B CN 104607581B
- Authority
- CN
- China
- Prior art keywords
- forging
- valve body
- mould
- temperature
- pressure
- 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.)
- Active
Links
Landscapes
- Forging (AREA)
Abstract
The invention provides a kind of deep hole one-time formed method of valve endoporus, comprise the following steps: (1), base: selecting the round steel of suitable diameter, during blocking, initial forging temperature is 1150 DEG C, terminal temperature 850 DEG C, completes base within temperature 1100 DEG C, 15 seconds time；(2), rough forge: making rough forge mould, endoporus is swaged into half bore, and temperature is maintained at 1000 DEG C, 30 seconds time, uses 5 tons of Single arm, makes product be swaged into the half of deep hole；(3), finish forge molding: complete the forging completely of deep hole；(4), mould separating.The present invention adopts the method adopting blocking half bore finish forge half bore in forging process, it is possible to make valve endoporus one-shot forming, reaches energy-saving and cost-reducing purpose, and forging density is high, comprcssive strength is big, is greatly saved raw material.
Description
Technical field
The invention belongs to technical field of forging, relate in particular to a kind of deep hole one-time formed method of valve endoporus.
Background technology
The high pressure valve adopted on oil and gas pipeline, valve body becomes convex, hole depth 230mm, hole internal diameter 105mm, hole external diameter 130mm, wall thickness 12.5mm, and owing to being applied on petroleum pipeline, the density of product and comprcssive strength will be more stricter than general valve.Valve conventional on present petroleum pipeline is all adopt essence casting valve, but, density, comprcssive strength are far away not as good as the valve body of forging.Cast member density contrast, has pore, sand holes, and compressive resistance is low.Some producers adopt open type forging high pressure valve, but because mould is narrow, when other condition is identical, the resistance that metal flows in die cavity is more big, and metal temperature reduces also more serious, and the full impression of Gu Chong is more difficult, round steel can only be swaged into solid by this method, and processing effort, wastes raw material.Owing to this kind of valve hole depth, wall are thin, special-shaped, in hole, there is lead both sides, are difficult to one-shot forming.
Summary of the invention
The present invention is to solve that the problems referred to above provide a kind of deep hole one-time formed method of valve endoporus.
The technical scheme is that and be achieved in that: a kind of deep hole one-time formed method of valve endoporus, comprise the following steps:
(1), base: selecting round steel, according to the ratio of formed product, weight, calculate cutting length by forging ratio, the computing formula of forging ratio is:
Valve body cutting stock weight/6.165/0.13/0.13=cutting length
Forging height corresponding with valve body in advance, during blocking, initial forging temperature is 1000-1200 DEG C, terminal temperature >=850 DEG C, uses the pneumatic hammer of 750kg, and pressure is 1000kg, is 1100 DEG C in temperature, completes base in second time 10-20；
(2), rough forge: make rough forge mould, rough forge mould is designed to the shape of body base, endoporus is swaged into half bore, calculates the pressure that valve body deformation size needs, and temperature is maintained at 900-1100 DEG C, second time 20-40, use 5 tons of Single arm, pressure 6000kg, proportion of deformation 80%, make product be swaged into the half of deep hole, forging horizontal projected area and valve body deformation size desirable pressure to be calculated as follows:
Forging horizontal projected area S=21*13+25*12+6*6*6.28+6.5*6.5*6.28
=1064.41cm2
Actual valve body deformability size needs pressure G=1064.41*4/1000=4.257 ton；
(3), finish forge molding: selecting 2 tons of fast forging hammers, pressure is 2500kg, and forging horizontal projected area and valve body deformation size desirable pressure are calculated as follows:
Forging horizontal projected area S=19*13+5.5*5.5*6.28=436.97cm2
Actual valve body deformability size needs pressure G=436.97*4 ÷ 1000=1.75 ton
Make finish forge mould, the venthole of 4mm is bored in mould heart portion, material is made to be easy for reaching desired height in deep hole mould, adding in forging hole and expand with aquadag with wood slag, make mould separate well not clamping with forging, wood slag aquadag synthesis ratio is wood slag: graphite: water=10:1:1, in the process of finish forge, forging temperature is 990 DEG C, quickly hits, and completes the forging completely of deep hole；
(4), mould separating: forging produces gas when high temperature with wood slag deflagrate, and temperature reaches 200～500 DEG C, promotes mould and forging to be rapidly separated, completes hole forming in valve.
The invention has the beneficial effects as follows: compared with prior art, the present invention adopts the method adopting blocking half bore finish forge half bore in forging process, it is possible to makes valve endoporus one-shot forming, reaches energy-saving and cost-reducing purpose, and forging density is high, comprcssive strength is big, is greatly saved raw material.
Accompanying drawing explanation
Fig. 1 is the valve crimp change in size figure of the present invention.
Detailed description of the invention
In order to be more fully understood that and enforcement, the following detailed description of a kind of deep hole one-time formed method of valve endoporus, comprise the following steps:
(1), base: the present embodiment selects diameter to be the round steel of 130, before forging molding, according to the ratio of formed product, weight, cutting length is calculated according to forging ratio, this example valve body cutting stock weight is 27kg, according to forging ratio formula: 27kg/6.165/0.13/0.13=259mm, show that cutting length is 249mm, forge height corresponding with valve body in advance, during blocking, initial forging temperature is 1150 DEG C, terminal temperature 850 DEG C, uses the pneumatic hammer of 750kg, pressure is 1000kg, completes base in temperature 1100 DEG C, 15 seconds time；
(2), rough forge: make rough forge mould, rough forge mould is designed to the shape of body base, endoporus is swaged into half bore, the original grain direction of round steel can not be changed when rough forge, hole is forged, because round steel forms the streamline along round steel length in the operation of rolling, if forging hole changes circular jet line along the original streamline of round steel, resistance is big, and deformation is slow；Calculating the pressure that valve body deformation size needs, temperature is maintained at 1000 DEG C, 30 seconds time, uses 5 tons of Single arm, pressure 6000kg, makes product be swaged into the half of deep hole.Forging horizontal projected area and valve body deformation size desirable pressure are calculated as follows:
Forging horizontal projected area S=21*13+25*12+6*6*6.28+6.5*6.5*6.28
=1064.41cm2
Actual valve body deformability size needs pressure G=1064.41*4/1000=4.257 ton；
(3), finish forge molding: select 2 tons of fast forging hammers, pressure 2500kg, forging horizontal projected area and valve body deformation size desirable pressure to be calculated as follows:
Forging horizontal projected area S=19*13+5.5*5.5*6.28=436.97cm2
Actual valve body deformability size needs pressure G=436.97*4 ÷ 1000=1.75 ton
When valve body semi-finished product, remainder is exactly the height in hole, it is necessary to is not less than in 980 °-1000 ° in forging temperature and just can complete.The venthole of 4mm it is drilled in mould heart portion, material is made to be easy for reaching desired height in deep hole mould, in mould, the ventilative pressure that reduces easily walks material, add in forging hole and expand with aquadag with wood slag, make mould separate well not clamping, wood slag aquadag synthesis certain proportion: wood slag 10: graphite 1: water 1 with forging, in the process of finish forge, forging temperature is 990 DEG C, quickly hits, and completes the forging completely of deep hole；
(4), mould separating: forging produces gas when high temperature with wood slag deflagrate, and temperature reaches 500 DEG C, promotes mould and forging to be rapidly separated, reaches not clamping, the undamaged purpose of forging.
The pressure that valve body deformation size difference needs is also different.nullValve crimp change in size (such as Fig. 1)，As can be seen from FIG.，Extruding size slowly becomes big along with the increase of extrusion passes，The temperature of mould and extrusion gradually rises with extrusion passes，After extruding (40-50) individual forging，Size tends towards stability，Start to dimensionally stable change in size 0.03-0.035mm from extruding for ￠ 2.055-￠ 2.06，At this moment mold temperature reaches more than 150 DEG C，Owing to mold temperature raises，Die cavity thermal expansion is made to be about 0.03mm，Between the difference in size 0.04-0.05mm of Warm status and cold rear forging，The shape of extrusion is more complicated，Deformation extent and extruding force are bigger，The degree of heat is also more violent，The amplitude of size fluctuation is also bigger，Extruding dynamics divides three times，750 pressure blockings，Pressure is 1000kg；The fast forging hammer finish forge of secondary 5 tons, pressure is 6000kg, and the proportion of deformation of second stage is 80%；Three 2 tons of Single arm rough forges, pressure is 2500kg.The forging hammer pressure adopted is all higher than workpiece desirable pressure, so that the forging of workpiece reaches rational effect.
Die hammer tonnage G (t) formula G=KF/1000
Wherein: F-includes forging horizontal projected area (c) of overlap (calculating by the 1/2 of storehouse portion width) and gross weight；K steel grade coefficient, and low-carbon (LC) conjunction knot steel (as: 45#, 20CrMnTiH coefficient be 4)
First stage starts from till being deformed to blank and impression sidewall contact, and the increase of deformation force is relatively slow, and proportion of deformation is 20%.Second stage be terminated to rush full impression completely to metal by the first stage, this stage deformation force can increase 2-3 times than first stage end, and proportion of deformation is 80%.Phase III blank has become indeformable cylinder body substantially, only makes the metal of end be deformed flowing under great molding pressure, and this product hole depth 230mm, inner side has two to swing to post, depanning angle 1.5 °.
The accessible economic benefit of this process: 640 tons, Spring Festival holidays material saving, produces 80,000, saves 8 kilograms of raw materials, by the 3000 yuan of calculating per ton of present market, can save 1,920,000 yuan for every.40 yuan of calculating are pressed in processing charges every, 80,000, can save 3,200,000 yuan, within 1 year, can be that country saves 5,120,000 yuan with enterprise.
Claims (1)
1. the one-time formed method of deep hole valve endoporus, valve weight 27kg, valve body hole depth 230mm, hole internal diameter 105mm, hole external diameter 130mm, wall thickness 12.5mm, it is characterised in that comprise the following steps:
(1), base: selecting round steel, according to the ratio of formed product, weight, calculate cutting length by forging ratio, the computing formula of forging ratio is:
Valve body cutting stock weight/6.165/0.13/0.13=cutting length
Valve body cutting stock weight is 27kg, forges height corresponding with valve body in advance, and during blocking, initial forging temperature is 1000-1200 DEG C, terminal temperature >=850 DEG C, uses the pneumatic hammer of 750kg, and pressure is 1000kg, is 1100 DEG C in temperature, completes base in second time 10-20；
(2), rough forge: make rough forge mould, rough forge mould is designed to the shape of body base, endoporus is swaged into half bore, calculates the pressure that valve body deformation size needs, and temperature is maintained at 900-1100 DEG C, second time 20-40, use 5 tons of Single arm, pressure 6000kg, proportion of deformation 80%, make product be swaged into the half of deep hole, forging horizontal projected area and valve body deformation size desirable pressure to be calculated as follows:
Forging horizontal projected area S=21*13+25*12+6*6*6.28+6.5*6.5*6.28
=1064.41cm2
Actual valve body deformability size needs pressure G=1064.41*4/1000=4.257 ton；
(3), finish forge molding: select 2 tons of fast forging hammers, pressure 2500kg, forging horizontal projected area and valve body deformation size desirable pressure to be calculated as follows:
Forging horizontal projected area S=19*13+5.5*5.5*6.28=436.97cm2
Actual valve body deformability size needs pressure G=436.97*4 ÷ 1000=1.75 ton
Make finish forge mould, the venthole of 4mm is bored in mould heart portion, material is made to be easy for reaching desired height in deep hole mould, adding in forging hole and expand with aquadag with wood slag, make mould separate well not clamping with forging, wood slag aquadag synthesis ratio is wood slag: graphite: water=10:1:1, in the process of finish forge, forging temperature is 990 DEG C, quickly hits, and completes the forging completely of deep hole；
(4), mould separating: forging produces gas when high temperature with wood slag deflagrate, and temperature reaches 200～500 DEG C, promotes mould and forging to be rapidly separated, complete hole forming in valve, the valve body hole depth 230mm after molding, hole internal diameter 105mm, hole external diameter 130mm, wall thickness 12.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058785.2A CN104607581B (en) | 2015-02-05 | 2015-02-05 | A kind of deep hole one-time formed method of valve endoporus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058785.2A CN104607581B (en) | 2015-02-05 | 2015-02-05 | A kind of deep hole one-time formed method of valve endoporus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104607581A CN104607581A (en) | 2015-05-13 |
| CN104607581B true CN104607581B (en) | 2016-07-27 |
Family
ID=53142374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510058785.2A Active CN104607581B (en) | 2015-02-05 | 2015-02-05 | A kind of deep hole one-time formed method of valve endoporus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104607581B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112207219B (en) * | 2019-07-12 | 2023-09-22 | 余姚市佳福车业有限公司 | Production and manufacturing method for hot forging inner hole of metal piece |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003103340A (en) * | 2001-09-27 | 2003-04-08 | Toto Ltd | Manufacturing method for metallic part |
| JP2003266139A (en) * | 2002-03-14 | 2003-09-24 | Toto Ltd | Metal parts forging method |
| CN1628921A (en) * | 2003-12-26 | 2005-06-22 | 李克敏 | All fiber forging process for load-carrying vehicle hub axle and die therefor |
| CN101690965A (en) * | 2009-10-10 | 2010-04-07 | 济南中森机械制造有限公司 | Hot extrusion forming process of half-shaft casings and special device |
| CN101693279A (en) * | 2009-10-20 | 2010-04-14 | 西安西工大超晶科技发展有限责任公司 | Upsetting and extruding precision die-forging forming method for large titanium alloy deep tube parts |
| CN102397964A (en) * | 2010-09-10 | 2012-04-04 | 江苏威鹰机械有限公司 | Energy accumulator shell forging process |
| CN103381459A (en) * | 2013-06-03 | 2013-11-06 | 上海齐耀动力技术有限公司 | Die forging technology for barrel body of high temperature alloy steel heater |
-
2015
- 2015-02-05 CN CN201510058785.2A patent/CN104607581B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003103340A (en) * | 2001-09-27 | 2003-04-08 | Toto Ltd | Manufacturing method for metallic part |
| JP2003266139A (en) * | 2002-03-14 | 2003-09-24 | Toto Ltd | Metal parts forging method |
| CN1628921A (en) * | 2003-12-26 | 2005-06-22 | 李克敏 | All fiber forging process for load-carrying vehicle hub axle and die therefor |
| CN101690965A (en) * | 2009-10-10 | 2010-04-07 | 济南中森机械制造有限公司 | Hot extrusion forming process of half-shaft casings and special device |
| CN101693279A (en) * | 2009-10-20 | 2010-04-14 | 西安西工大超晶科技发展有限责任公司 | Upsetting and extruding precision die-forging forming method for large titanium alloy deep tube parts |
| CN102397964A (en) * | 2010-09-10 | 2012-04-04 | 江苏威鹰机械有限公司 | Energy accumulator shell forging process |
| CN103381459A (en) * | 2013-06-03 | 2013-11-06 | 上海齐耀动力技术有限公司 | Die forging technology for barrel body of high temperature alloy steel heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104607581A (en) | 2015-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109648029B (en) | Forging die set for large thin-wall cylinder flange plate and forging method thereof | |
| CN101181730A (en) | Drill pipe joint precision die forging process | |
| CN110560544B (en) | Large-section-difference hollow structural member axial compression expansion forging process method | |
| CN105033140B (en) | A kind of hot upsetting squeeze composite forming die of aluminum alloy isothermal and method | |
| RU2633116C2 (en) | METHOD FOR FORMING EXTRUDED CONSTRUCTION PIPE | |
| CN104148574B (en) | The cam bit manufacture method of a kind of accurate cold forging forming | |
| CN107414009A (en) | Waveform combustion chamber forging steel piston head is warm, cold forging near-net-shape technique | |
| CN102554108A (en) | Cold-heading forming method and special mould for deep inner hexagonal hole bolt | |
| CN105798538A (en) | Differential case extrusion and punching process | |
| CN107443019A (en) | The warm cold duplex forging manufacturing process of deep hole input shaft | |
| CN101545440B (en) | Method for manufacturing motorcycle starting lever swivel | |
| CN104963927A (en) | Flanging and riveting self-locking nut and machining method thereof | |
| CN112589021A (en) | Manufacturing method of IN718 alloy double-flange high-barrel casing ring piece | |
| CN104607581B (en) | A kind of deep hole one-time formed method of valve endoporus | |
| RU2634821C2 (en) | Method for direct or reverse pressing of metal pipes, mandrel for pressing of metal pipes, press for extrusion of metal pipes and extruded metal pipe | |
| CN202667454U (en) | Mechanical integrated forming mould for automobile axle housing | |
| CN106553026B (en) | Thin Walled Curved bus aluminum alloy liner forming method and molding die | |
| CN110877091B (en) | Hot forging forming process method of steering knuckle arm | |
| CN112275988A (en) | Branch type tee joint forming die and forming method | |
| CN102179463B (en) | Blank-making rolling method for conical hub of automotive transmission | |
| CN102921873A (en) | Method for machining flange shaft of motorcycle | |
| CN102601286A (en) | Dedicated end-face welding screw molding die | |
| CN101386035A (en) | Manufacturing technique of piston pin | |
| CN102717014A (en) | Method for freely forging casing elevator for petroleum drilling and production | |
| CN112894276B (en) | Deep blind hole cylindrical component and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |