CN1490153A - Dividing cylinder style cold isopressing process - Google Patents
Dividing cylinder style cold isopressing process Download PDFInfo
- Publication number
- CN1490153A CN1490153A CNA021308829A CN02130882A CN1490153A CN 1490153 A CN1490153 A CN 1490153A CN A021308829 A CNA021308829 A CN A021308829A CN 02130882 A CN02130882 A CN 02130882A CN 1490153 A CN1490153 A CN 1490153A
- Authority
- CN
- China
- Prior art keywords
- spacer
- master cylinder
- water cavity
- pressure
- cylinder
- 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.)
- Pending
Links
Images
Landscapes
- Press Drives And Press Lines (AREA)
Abstract
A flexible isolator type cold isostatic pressing machine for machining workpiece features that the primary cylinder is divided by a flexible isolator into big water cavity and small oil cavity, said water cavity and oil cavity are respectively communicated to the high-pressure water injector and high-pressure oil pump, and the workpiece to be machined is put in the water cavity. Its machining steps include filling high-pressure water in water cavity until the pressure reaches the value needed by workpiece, cutting off its communicating hole to seal it, and filling high-pressure oil in oil cavity until the pressure reaches the value needed by the density of workpieces. Its advantages are less deformation of isolator, small diameter of cylinder and low cost.
Description
Technical field
The invention belongs to the processing method of the isostatic cool pressing of powder forming, particularly a kind of processing method of spacer type isostatic cool pressing.
Background technology
The processing method of present spacer type isostatic cool pressing is, working media is a water in the spacer, and the outer working media of spacer is an oil, the pollution problem that has that has solved workpiece to be machined.But the method is carried out at single hole spacer type cold isostatic press (as shown in Figure 1) at present, this method is that the amount of medium immobilizes in spacer, under the situation about directly not suppressed, only the outer medium of spacer is directly suppressed by single hole, the pressure of the outer medium of spacer is passed to medium in the spacer by the spacer movement and deformation, and final pressure passes to method on the workpiece to be machined by medium in the spacer.Put workpiece to be machined in the spacer in the process in the spacer type cold isostatic press, in the process of pressurized operation, working medium water is a fixed amount in the spacer between spacer and the workpiece, working medium water is sealed in wherein by cylinder body, cylinder cap and spacer in the spacer between spacer and the workpiece, directly is not in communication with the outside and is suppressed.In the process of pressurized operation, have only the outer working media oil of spacer directly to be suppressed pressurization by single hole, the pressure of the outer medium oil of this spacer pressurizes to the working medium water in the spacer by spacer, this moment the spacer movement and deformation, the pressure that working medium water in the spacer is subjected to passes to workpiece again, makes workpiece pressurized.Because of the amount that is sealed in the working medium water in the spacer is fixed, working media oil outside being subjected to spacer pass through pressure that spacer transmits the time, after working medium water in the spacer is compressed, the variable quantity of volume-diminished is bigger, therefore the distortion amount of movement of spacer is also big, and spacer is pressed against easily on the outer steel shell with holes of workpiece and causes spacer to break.To strengthen the diameter 25% of master cylinder body for this reason, thereby cause need to increase pressure 56% again, finally cause machine cost to improve 40%, in order to improve pressure, increase use cost in the use.Even so in master cylinder, put partially as workpiece, also may cause spacer to break.
Summary of the invention
The technical task that the present invention will solve provides a kind of processing method and equipment of spacer type isostatic cool pressing, reaches spacer and is difficult for breaking, and the complete machine cost reduces.
Content of the present invention: a kind of processing method of spacer type isostatic cool pressing, it is characterized by: use equipment is: resilient spacer in the master cylinder, spacer is airtight large and small two parts with the master cylinder sealed separation, big part is that water cavity, little part are oil pocket, and water cavity and oil pocket respectively have the spacer type isostatic cool pressing equipment that leads to the external communications hole respectively; Put into processed workpiece in the water cavity, processed workpiece is that box hat with holes and the dusty material of Qi Nei are arranged, and the intercommunicating pore of water cavity connects the high pressure water injection device, and the intercommunicating pore of oil pocket connects pressure oil pump; Procedure of processing: the water under high pressure that at first injects pressure≤320 kilogram/every square centimeter to water cavity by the high pressure water injection device, when the pressure of water cavity reaches when requiring institute's predetermined pressure according to workpiece, block the intercommunicating pore sealing water cavity of water cavity, by pressure oil pump, inject hydraulic oil to oil pocket, when the pressure of its hydraulic oil being reached require determined value, finishing pressurization and processing according to workpiece density.
A kind of oil (gas) filling device of spacer type isostatic cool pressing, framework is arranged, master cylinder is arranged between the framework, cylinder cap and cylinder bottom are arranged on the master cylinder, between master cylinder and cylinder cap and the cylinder bottom sealing ring is arranged, spacer is arranged in the master cylinder, there is seal to be divided into airtight big or small two parts in the master cylinder between spacer and the master cylinder inwall, big part is that water cavity, little part are oil pocket, oil pocket part the external communications of leading to hole arranged, for it is characterized by: water cavity has the external communications of leading to hole.
A kind of spacer of oil (gas) filling device of spacer type isostatic cool pressing is cylindrical spacer, cylindrical spacer upper end is by sealing ring and the sealing of master cylinder inwall, cylindrical spacer below is sealed by sealing plate, on the cylinder cap of master cylinder top the intercommunicating pore that is communicated with the master cylinder outside is arranged, on the cylinder bottom of master cylinder below the intercommunicating pore that is communicated with the master cylinder outside is arranged.
The spacer of the oil (gas) filling device of another kind of spacer type isostatic cool pressing is circle bowl-type spacer, circle bowl-type spacer edge is by the inwall sealing of sealing ring and master cylinder below, there is dividing plate with holes circle bowl-type spacer top in the master cylinder, on the cylinder cap of master cylinder top the intercommunicating pore that is communicated with the master cylinder outside is arranged, on the cylinder bottom of master cylinder below the intercommunicating pore that is communicated with the master cylinder outside is arranged.
Beneficial features of the present invention: the processing method of spacer type isostatic cool pressing and equipment, because water cavity is strong by predetermined hydraulic pressure, the reinject amount of the hydraulic oil that hydraulic oil injects when reaching same pressure of oil pocket just can be lacked, the spacer distortion is just little, avoids being pressed against on the outer steel shell with holes of workpiece and causes spacer to break.Adopt the method,, can reduce the diameter of master cylinder, reduce the complete machine cost avoiding spacer to break under the prerequisite.
Description of drawings
Fig. 1 is the structural representation of the single hole spacer type cold isostatic press of original processing method use
Fig. 2 is the diplopore spacer type cold isostatic press structural representation that adopts new machining method
Fig. 3 is the another kind of diplopore spacer type cold isostatic press structural representation that adopts new machining method
Specific embodiment
The processing method of spacer type isostatic cool pressing, be under the condition of using the spacer type cold isostatic press, to realize, resilient spacer in such its master cylinder of spacer type cold isostatic press, spacer is airtight big or small two parts with the master cylinder sealed separation, big part is a water cavity, little part is an oil pocket, this water cavity and oil pocket respectively have the external communications of leading to hole respectively, put into processed workpiece in the water cavity, processed workpiece is that box hat with holes and the dusty material of Qi Nei are arranged, and by the connection of the intercommunicating pore on water cavity high pressure water injection equipment, high pressure water injection equipment can be pressure pump, and oil pocket connects pressure oil pump by the intercommunicating pore on it; At first start pressure pump to make≤320 kilograms/every square centimeter water under high pressure feeds water cavity, when the pressure of water cavity reaches (different workpiece is according to designing requirement predetermined pressure difference) when requiring institute's predetermined pressure according to workpiece, block the intercommunicating pore sealing water cavity of water cavity, again by pressure oil pump, inject hydraulic oil to oil pocket, when the pressure of its hydraulic oil being reached require determined value (different workpiece is according to the last pressure values difference of designing requirement) according to workpiece density, finish pressurization processing, fetch boiling water and oily pipe valve, bleed off water and oil, open master cylinder, take out workpiece.
Because the required density of different workpiece is different, so predetermined pressure and last pressure are determined with the requirement of workpiece.
The following structure of oil (gas) filling device of above-mentioned spacer type isostatic cool pressing, framework 1 is arranged, master cylinder 2 is arranged between the framework, cylinder cap 3 and cylinder bottom 4 are arranged on the master cylinder, sealing ring 5 is arranged between master cylinder and cylinder cap and the cylinder bottom, spacer 6 is arranged in the master cylinder, there is seal to be divided into airtight big or small two parts in the master cylinder between spacer and the master cylinder inwall, big part is that water cavity, little part are oil pocket, oil pocket part the external communications of leading to hole 7 arranged, water cavity has the external communications of leading to hole 8.
Wherein a kind of oil (gas) filling device of spacer type isostatic cool pressing, be also referred to as radially spacer type cold isostatic press, spacer is cylindrical spacer 6, cylindrical spacer upper end is by sealing ring 9 and the sealing of master cylinder inwall, cylindrical spacer below is by sealing plate 10 sealings, on the cylinder cap of master cylinder top the intercommunicating pore 8 that is communicated with the master cylinder outside is arranged, on the cylinder bottom of master cylinder below the intercommunicating pore 7 that is communicated with the master cylinder outside is arranged.
The oil (gas) filling device of another kind of spacer type isostatic cool pressing, be also referred to as axial spacer type cold isostatic press, spacer is circle bowl-type spacer 11, circle bowl-type spacer edge is by the inwall sealing of sealing ring 12 with the master cylinder below, there is dividing plate with holes 13 circle bowl-type spacer top in the master cylinder, on the cylinder cap of master cylinder top the intercommunicating pore 14 that is communicated with the master cylinder outside is arranged, on the cylinder bottom of master cylinder below the intercommunicating pore 15 that is communicated with the master cylinder outside is arranged.
Claims (4)
1, a kind of processing method of spacer type isostatic cool pressing, it is characterized by: use equipment is: resilient spacer in the master cylinder, spacer is airtight large and small two parts with the master cylinder sealed separation, big part is that water cavity, little part are oil pocket, and water cavity and oil pocket respectively have the spacer type isostatic cool pressing equipment that leads to the external communications hole respectively; Put into processed workpiece in the water cavity, processed workpiece is that box hat with holes and the dusty material of Qi Nei are arranged, and the intercommunicating pore of water cavity connects the high pressure water injection device, and the intercommunicating pore of oil pocket connects pressure oil pump; Procedure of processing: the water under high pressure that at first injects pressure≤320 kilogram/every square centimeter to water cavity by the high pressure water injection device, when the pressure of water cavity reaches when requiring institute's predetermined pressure according to workpiece, block the intercommunicating pore sealing water cavity of water cavity, by pressure oil pump, inject hydraulic oil to oil pocket, when the pressure of its hydraulic oil being reached require determined value, finishing pressurization and processing according to workpiece density.
2, a kind of oil (gas) filling device of spacer type isostatic cool pressing, framework is arranged, master cylinder is arranged between the framework, cylinder cap and cylinder bottom are arranged on the master cylinder, between master cylinder and cylinder cap and the cylinder bottom sealing ring is arranged, spacer is arranged in the master cylinder, there is seal to be divided into airtight big or small two parts in the master cylinder between spacer and the master cylinder inwall, big part is that water cavity, little part are oil pocket, oil pocket part the external communications of leading to hole arranged, for it is characterized by: water cavity has the external communications of leading to hole.
3, the processing method of spacer type isostatic cool pressing according to claim 2, it is characterized by: spacer is cylindrical spacer, cylindrical spacer upper end is by sealing ring and the sealing of master cylinder inwall, cylindrical spacer below is sealed by sealing plate, on the cylinder cap of master cylinder top the intercommunicating pore that is communicated with the master cylinder outside is arranged, on the cylinder bottom of master cylinder below the intercommunicating pore that is communicated with the master cylinder outside is arranged.
4, the processing method of spacer type isostatic cool pressing according to claim 2, it is characterized by: spacer is circle bowl-type spacer, circle bowl-type spacer edge is by the inwall sealing of sealing ring and master cylinder below, there is dividing plate with holes circle bowl-type spacer top in the master cylinder, on the cylinder cap of master cylinder top the intercommunicating pore that is communicated with the master cylinder outside is arranged, on the cylinder bottom of master cylinder below the intercommunicating pore that is communicated with the master cylinder outside is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021308829A CN1490153A (en) | 2002-10-16 | 2002-10-16 | Dividing cylinder style cold isopressing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021308829A CN1490153A (en) | 2002-10-16 | 2002-10-16 | Dividing cylinder style cold isopressing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1490153A true CN1490153A (en) | 2004-04-21 |
Family
ID=34144669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021308829A Pending CN1490153A (en) | 2002-10-16 | 2002-10-16 | Dividing cylinder style cold isopressing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1490153A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422399A (en) * | 2013-08-22 | 2013-12-04 | 泰州新源电工器材有限公司 | All-constant-pressure pressurizing device and molding method for wet process insulating molded part |
| CN110541106A (en) * | 2019-08-31 | 2019-12-06 | 上海金范机械铸造有限公司 | Treatment method of cast iron melt |
-
2002
- 2002-10-16 CN CNA021308829A patent/CN1490153A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422399A (en) * | 2013-08-22 | 2013-12-04 | 泰州新源电工器材有限公司 | All-constant-pressure pressurizing device and molding method for wet process insulating molded part |
| CN103422399B (en) * | 2013-08-22 | 2015-09-02 | 泰州新源电工器材有限公司 | A kind of congruence pressure pressue device of wet method insulation molding part and forming method |
| CN110541106A (en) * | 2019-08-31 | 2019-12-06 | 上海金范机械铸造有限公司 | Treatment method of cast iron melt |
| CN110541106B (en) * | 2019-08-31 | 2020-09-18 | 上海金范机械铸造有限公司 | Treatment method of cast iron melt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100376340C (en) | Half-mould forming process for metal plate material | |
| CN101725580B (en) | Hydraulic pressure cylinder | |
| CN108035926B (en) | A kind of application method of multi-cylinder linkage hydraulic system of hydraulic machine | |
| CN112610446A (en) | Method for improving pumping quantity of synthetic ammonia hydrogen nitrogen compressor | |
| CN1490153A (en) | Dividing cylinder style cold isopressing process | |
| CN201144897Y (en) | Gas-liquid reinforcement pressure cylinder | |
| CN101949339A (en) | Multilayer metal cylinder head gasket provided with sealed limit piece and processing technique thereof | |
| CN1919555A (en) | Pressure device of plate adhesion machine | |
| CN210219314U (en) | Oil-free linear inflation compressor | |
| CN217761523U (en) | Two-stage full-hydraulic pressure cylinder with stroke detection function | |
| CN201516466U (en) | Sealing gasket stamping modular mold | |
| CN206035929U (en) | Large -scale plate shearing machine hydraulic control system | |
| CN201531486U (en) | Hydraulic pressurized cylinder | |
| CN212134109U (en) | Sediment rock core pressurize cutting device | |
| CN206854519U (en) | A kind of semi-automatic booster thrust bearing produced oil film wedge inclined-plane marking press | |
| CN2570544Y (en) | Gas-liquid cylinder sealing arrangement | |
| CN201832860U (en) | Closed end blind hole cold extrusion forming die of energy accumulator shell | |
| CN202640799U (en) | Returnable lithium collection device | |
| CN201871658U (en) | High-speed cold forging hydraulic press | |
| CN101555849A (en) | Deformation compensation technology of high-pressure fuel pump of diesel engine | |
| CN206305473U (en) | A kind of Tool-rest of Numerical Control Lathe | |
| CN201565809U (en) | Lathe clamping cylinder oil distributor | |
| CN217255818U (en) | Compound pipe bush water pressure frock | |
| CN216604193U (en) | Safety valve for membrane filter press | |
| CN213889571U (en) | Pressing plate device for rapidly clamping lathe center frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |