CN109158439A - A kind of extrusion die strong cooling method and device online - Google Patents
A kind of extrusion die strong cooling method and device online Download PDFInfo
- Publication number
- CN109158439A CN109158439A CN201811099310.8A CN201811099310A CN109158439A CN 109158439 A CN109158439 A CN 109158439A CN 201811099310 A CN201811099310 A CN 201811099310A CN 109158439 A CN109158439 A CN 109158439A
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- CN
- China
- Prior art keywords
- tracheae
- extrusion die
- die
- extrusion
- cushion
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- 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
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
- B21C29/003—Cooling or heating of work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
- B21C29/04—Cooling or heating of press heads, dies or mandrels
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a kind of extrusion die strong cooling method and devices online, are used for the hot-pressed processing of metal, process annular through groove around its discharge port principal section shape contour between extrusion die discharge port and mold special-purpose cushion, are laid with tracheae in annular through groove slot；Intratracheal to lead to cooling inert gas, tiny venthole is sprayed onto die working length and squeeze wood surface in cooling gas transtracheal.The extrusion molding of the products such as the present invention Al alloys andMg alloys not strong to hardening heat sensibility produces, it can be achieved that cold in the convenient progress High Voltage in extrusion exit, it is ensured that the heat treatment of its squeeze wood press quenching can meet corresponding mechanical property requirements；Coarse grains caused by secondary crystallization are avoided the occurrence of, meet the requirements its surface quality, surface is brighter；Solves the defects of size, shape, tissue for since metal temperature fluctuation is excessive, leading to squeeze wood in hot extrusion process；Effectively improve extrusion speed, 10% or more improving productivity.
Description
Technical field
The present invention relates to the hot-pressed field of metal more particularly to a kind of extrusion die strong cooling method and devices online.
Background technique
During metal material is hot-pressed, since rubbing action and work of deformation are changed into heat, so that mold temperature
Degree increases, the cohesive force between die working length and metal material increases and cohesive force is unbalanced everywhere on mold work band,
Cause metal to be marked the non-uniform scratch of a lot of in work belt discharge port, seriously affects squeeze wood surface quality, especially
For when structure of extrusion is complicated, load is big, extrusion speed is fast or squeezes high tensile metal material, the profile after extrusion forming exists
Temperature rise reaches its recrystallization temperature value at mould outlet, and easily generation secondary crystallization is formed so that coarse grains easily occurs in its surface
Coarse-grain layer leads to profile strength reduction, or even causes squeeze wood product surface severe oxidation, forms blackspot, burning occurs etc. and is tight
Weight defect, the method for solving above-mentioned problem at present mostly use: first is that reducing extrusion speed, but influencing production efficiency；Second is that improving
Mold self structure reduces heat caused by rubbing to reduce extrusion molding drag, but technology of die manufacturing difficulty increases, production
Cost improves.
Summary of the invention
The purpose of the present invention is a kind of extrusion die strong cooling method and devices online.
For achieving the above object, the technical scheme is that a kind of extrusion die strong cooling method online, for gold
Belong to hot-pressed processing, tapping channel principal section shape contour surround between extrusion die discharge port and mold special-purpose cushion,
Annular through groove is processed on mold special-purpose cushion, by the tiny venthole being laid on the tracheae in annular through groove on discharge port
Squeeze wood surface spray cooling gas.
The cooling gas is inert gas.
A kind of extrusion die on-line cooling device, comprising:
Extrusion die and mould discharging mouth；
Mold special-purpose cushion and die-cushion tapping channel, the mold special-purpose cushion and extrusion die interconnect, and the die-cushion discharging is logical
Road is coaxially correspondingly arranged with mould discharging mouth；Squeeze wood passes through mould discharging channel, mould discharging mouth, extrusion molding；
The tracheae that the mold special-purpose cushion contacted with the extrusion die is equipped with annular installs annular groove, and tracheae installs annular groove and die-cushion
Tapping channel surround and communicates；
Cooling system, including tracheae, and the gas storage pressurizing device being connect with the tracheae；The tracheae is arranged in the gas
Pipe is installed in annular groove；
The tracheae cross-sectional shape is round, along the axial densely covered tiny venthole of a row on tube wall；Intratracheally logical cooling gas,
Cooling gas is blown along squeeze wood discharging direction to die working length and squeeze wood surface through tiny venthole.
The beneficial effects of the present invention are:
The extrusion molding of the products such as the present invention Al alloys andMg alloys not strong to hardening heat sensibility produces, first is that may be implemented in crowded
Press the convenient progress High Voltage in exit cold, it is ensured that its squeeze wood press quenching, which is heat-treated, can meet corresponding mechanical property, and two
It is coarse grains caused by avoiding the occurrence of secondary crystallization, meets the requirements its surface quality, surface is brighter, third is that solving heat
Since metal temperature fluctuates excessive, the defects of leading to the size of squeeze wood, shape, tissue in extrusion process, fourth is that can effectively mention
High extrusion speed, 10% or more improving productivity.
Detailed description of the invention
Fig. 1 is extrusion die on-line cooling apparatus structure schematic diagram in embodiment；
Fig. 2 is tracheae schematic cross-section in embodiment；
Fig. 3 is tiny venthole distribution schematic diagram on tracheae in embodiment.
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Specific embodiment
Below in conjunction with attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
A kind of extrusion die strong cooling method online, is used for the hot-pressed processing of metal, in extrusion die discharge port and mould
Have between special-purpose cushion around tapping channel principal section shape contour, process annular through groove on mold special-purpose cushion, by being laid on
Spray cooling gas in squeeze wood surface of the tiny venthole on discharge port on tracheae in annular through groove.
The cooling gas is inert gas, can be the inert gases such as nitrogen.Inert gas can also play protective atmosphere
Effect, protect hot squeeze wood surface not by high-temperature oxydation, make its surface-brightening zero defect.
As shown in Figure 1, 2, 3, a kind of extrusion die on-line cooling device disclosed in embodiment, comprising:
Extrusion die 1 and mould discharging mouth；
Mold special-purpose cushion 3 and die-cushion tapping channel 4, the mold special-purpose cushion 3 are interconnected with extrusion die 1, and the die-cushion goes out
Material channel 4 is coaxially correspondingly arranged with mould discharging mouth 2；Squeeze wood 5 is squeezed by mould discharging channel, die working length discharge port
Pressing formation；
The mold special-purpose cushion 3 contacted with the extrusion die 1 be equipped with annular tracheae install annular groove 6, tracheae install annular groove 6 with
Die-cushion tapping channel 4 surround and communicates；
Cooling system, including tracheae 9, and the gas storage pressurizing device (not shown) being connect with the tracheae 9；The tracheae 9
Using stainless steel material, tracheae is fixed on by spot welding and is installed in annular groove 6；Tracheae 9 and gas storage pressurizing device constitute closed loop
System.
9 cross-sectional shape of tracheae is circle, internal diameter 4-5mm, along the axial densely covered tiny outlet of a row on tube wall
Hole 7, tiny outlet aperture about 0.5mm, venthole mutual spacing 4-5mm, and material category, the section shape of visual extruded product
The differences such as shape, wall thickness reasonably adjust its venthole mutual spacing size, it is cooling uniformly to realize press quenching, and according to squeeze wood
It can need adjustable to its cooling velocity controllable.Lead to cooling gas in tracheae 9, cooling gas is through tiny venthole 7, along squeeze wood 5
Discharging direction is blown to 5 surface of die working length 7 and squeeze wood, realizes online convenient and efficient quenching cooling, and do not waste gas,
It can also play protective atmosphere simultaneously, protect hot squeeze wood surface not by high-temperature oxydation.
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Claims (3)
1. a kind of extrusion die strong cooling method online is used for the hot-pressed processing of metal, which is characterized in that go out in extrusion die
Around tapping channel principal section shape contour between material mouth and mold special-purpose cushion, annular through groove is processed on mold special-purpose cushion, is borrowed
Help squeeze wood surface spray cooling gas of the tiny venthole on the tracheae being laid in annular through groove on discharge port.
2. extrusion die according to claim 1 strong cooling method online, which is characterized in that the cooling gas is indifferent gas
Body.
3. a kind of extrusion die on-line cooling device characterized by comprising
Extrusion die and mould discharging mouth；
Mold special-purpose cushion and die-cushion tapping channel, the mold special-purpose cushion and extrusion die interconnect, and the die-cushion discharging is logical
Road is coaxially correspondingly arranged with mould discharging mouth；Squeeze wood passes through mould discharging channel, mould discharging mouth, extrusion molding；
The tracheae that the mold special-purpose cushion contacted with the extrusion die is equipped with annular installs annular groove, and tracheae installs annular groove and die-cushion
Tapping channel surround and communicates；
Cooling system, including tracheae, and the gas storage pressurizing device being connect with the tracheae；The tracheae is arranged in the gas
Pipe is installed in annular groove；
The tracheae cross-sectional shape is round, along the axial densely covered tiny venthole of a row on tube wall；Intratracheally logical cooling gas,
Cooling gas is blown along squeeze wood discharging direction to die working length and squeeze wood surface through tiny venthole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811099310.8A CN109158439A (en) | 2018-09-20 | 2018-09-20 | A kind of extrusion die strong cooling method and device online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811099310.8A CN109158439A (en) | 2018-09-20 | 2018-09-20 | A kind of extrusion die strong cooling method and device online |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109158439A true CN109158439A (en) | 2019-01-08 |
Family
ID=64879897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811099310.8A Pending CN109158439A (en) | 2018-09-20 | 2018-09-20 | A kind of extrusion die strong cooling method and device online |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109158439A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180912A (en) * | 2019-06-13 | 2019-08-30 | 江苏银奕达科技股份有限公司 | It is a kind of to be discharged mold for aluminium packet wood section based on nitrogen protection |
| CN111438211A (en) * | 2020-03-02 | 2020-07-24 | 西安斯瑞先进铜合金科技有限公司 | Hot extrusion process of lower outgoing line blank for embedded pole |
| CN114107849A (en) * | 2021-11-29 | 2022-03-01 | 哈尔滨工业大学 | Preparation method of high-strength and high-toughness Mg-Gd-Y-Zn-Zr wrought magnesium alloy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1632295A1 (en) * | 2004-09-06 | 2006-03-08 | Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO | High speed metal extrusion |
| CN103643181A (en) * | 2013-11-29 | 2014-03-19 | 福建省南平铝业有限公司 | Online forced-cooling and quenching device of aluminum alloy extrusion material |
| CN105478511A (en) * | 2015-12-25 | 2016-04-13 | 青海模具制造科技有限公司 | Extrusion die |
-
2018
- 2018-09-20 CN CN201811099310.8A patent/CN109158439A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1632295A1 (en) * | 2004-09-06 | 2006-03-08 | Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO | High speed metal extrusion |
| CN103643181A (en) * | 2013-11-29 | 2014-03-19 | 福建省南平铝业有限公司 | Online forced-cooling and quenching device of aluminum alloy extrusion material |
| CN105478511A (en) * | 2015-12-25 | 2016-04-13 | 青海模具制造科技有限公司 | Extrusion die |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180912A (en) * | 2019-06-13 | 2019-08-30 | 江苏银奕达科技股份有限公司 | It is a kind of to be discharged mold for aluminium packet wood section based on nitrogen protection |
| CN111438211A (en) * | 2020-03-02 | 2020-07-24 | 西安斯瑞先进铜合金科技有限公司 | Hot extrusion process of lower outgoing line blank for embedded pole |
| CN114107849A (en) * | 2021-11-29 | 2022-03-01 | 哈尔滨工业大学 | Preparation method of high-strength and high-toughness Mg-Gd-Y-Zn-Zr wrought magnesium alloy |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20190108 |