CN106493339B - A method of aluminium alloy spring base is produced with Horizontal type extrusion casting machine - Google Patents
A method of aluminium alloy spring base is produced with Horizontal type extrusion casting machine Download PDFInfo
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- CN106493339B CN106493339B CN201610976636.9A CN201610976636A CN106493339B CN 106493339 B CN106493339 B CN 106493339B CN 201610976636 A CN201610976636 A CN 201610976636A CN 106493339 B CN106493339 B CN 106493339B
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- aluminium alloy
- spring base
- alloy spring
- temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of methods with Horizontal type extrusion casting machine production aluminium alloy spring base, wherein, the production method is specific as follows: (1) temperature of aluminum liquid (2) briquetting pressure (3) shot position (4) filling velocity.The present invention, which has, meets performance requirement and high reliablity and the easy for installation and high effect of utilization rate.
Description
Technical field
It is the present invention relates to aluminium alloy car spring seat material extrusion casint forming technique field, in particular to a kind of with horizontal
The method of extrusion casting machine production aluminium alloy spring base.
Background technique
Spring base is the core part of automobile shock, it is located at front of the car shock absorbing apparatus, with spring, hanging axis, revoke phase
Even, the device is by the effect of central spring flexible deformation in above-below direction and damper come the vehicle Vertical Square that mitigates and decay
To vibration.Under vehicle driving state, it subjects the changeable impact endurance test shock load of central spring.Spring base it is safe and reliable
Property directly affect the traveling reliability and the intransit steady, level of comfort of passenger of vehicle, produced in auto parts and components
In have critical role.Belong to automobile bottom diskware, safety member, spring base dominant failure mode is fatigue rupture.Therefore to automobile
The mechanical property requirements of spring base are very high.Orthodox car shock mitigation system, spring tray are formed by steel plate punched, are welded on wheel shaft
Upper is spring base.Existing automobile production spring tray is produced as steel plate punched, is welded on wheel shaft, while also needing to cooperate
Damping spring, buffering apron etc..Currently, the main problem that press-working spring pallet production is faced is: the structure is erroneous for installation, matches
Part performance is inconsistent, is welded with risk of breakage.As new-energy automobile develops, automotive light weight technology is imperative, in order to improve me
State's auto parts product innovation capability and independent brand automobile competitiveness, need to realize high performance automobile spring spring abutment industrialization with
Sizable application.
Summary of the invention
In view of the above problems, the purpose of the present invention is to provide one kind in addition to meeting performance requirement, is provided simultaneously with reliability
The production method of aluminium alloy spring base high, easy for installation and high utilization rate.
To achieve the above object, a kind of side with Horizontal type extrusion casting machine production aluminium alloy spring base provided by the invention
Method, the production method are specific as follows: (1) temperature of aluminum liquid, select the pouring temperature of aluminum alloy melt mainly according to aluminium alloy spring base
Product wall thickness and complexity determine；Secondly the characteristic in conjunction with alloy, filling velocity, room temperature and mold temperature synthesis is also needed to examine
Consider；(2) setting of briquetting pressure, die mould pressure directly influences properties of product.When pressure setting is too low, product will appear contracting
Hole, it is loose the defects of；When pressure be arranged it is excessively high, press clamp force need to be increased, influence the service life of die life, press.(3)
Shot position, the calculating of low-speed position and filling velocity position according to punch diameter and can pour into aluminium alloy weight, find out position
Height value please refers to following formula:
H: poured weights aluminium alloy height mm；
Wt: poured weights g；
D: punch diameter mm；
2.5: molten aluminum density g/cm3；
(4) filling velocity, the too high molten aluminum of speed is easy to produce volume gas during filling, after Overheating Treatment, product
Surface will appear bubble；Hypertonia, molten aluminum can reduce die life the erosion of mold cavity simultaneously；To prevent inside product
It generates volume gas, owe casting defect, product type, structure, gating proportion etc. need to be integrated and carry out calculating filling velocity, and according to actual production
Situation is finely adjusted.Following formula is please referred to by cast gate injection speed to calculate:
In extrusion casint embodiment, 700-720 DEG C of the pouring temperature of aluminum alloy melt；The first switching point of filling velocity
(at 20mm), the second switching point (at 86mm), third switching point (at 200mm) speed are 200mm/ seconds, the 4th switching point
(at 210mm), the 5th switching point (at 245mm) speed are 70mm/ seconds；It is pressurized valve opening 50-60%；Briquetting pressure is
100MPa；Mold temperature is controlled at 180-230 DEG C.
Product is to obtain excellent performance to be heat-treated through T6, heat treatment parameter are as follows: be heated to 535 DEG C and keep the temperature 5 hours；?
It is quenched within 15 seconds；It is put into after quenching in 150 DEG C of holding furnaces, keeps the temperature 4 hours, come out of the stove air-cooled.
In embodiments, the mold of aluminium alloy spring base product includes pouring section and overflow portion；The casting
It is partly comprised in material handle, the ingate being equipped on material handle and the runner being equipped in material handle；The pouring section utilizes liquid
Flow regime and pressure distribution are flowed, aluminium alloy spring base product is smoothly filled and consecutive solidification.
The thickness of ingate is greater than the wall thickness of aluminium alloy spring base product.
Running channel opens up position in the middle part of aluminium alloy spring base product, and aluminium alloy spring base product thickness is in 10mm-15mm, nothing
Cross gate need to be set；Ingate sectional dimension is φ 35mm, and ingate and sprue length (workpiece to material handle length) are 35-
40mm；Material cake diameter is 80mm, expects handle with a thickness of 30-40mm.
Present invention has the advantages that aluminium alloy extrusion casting is changed to by existing steel plate punched weldment, to realize spring
Lightweight, high-performance and the high reliability of seat product.Spring base body sampling performance indicator produced by the invention are as follows: tension is strong
Degree >=300Mpa, yield strength >=220Mpa, elongation after fracture >=8%, this is common die casting, low pressure casting, counter-pressure casting work
The performance that skill is unable to reach.Conventional cast, low pressure casting and part is replaced to forge with extrusion casint, it is reliable to reach raising part
Property, the precision of blank is improved, machining allowance is reduced, reduces raw materials consumption, the purpose for reducing cost is its inexorable trend.It realizes
Not only meet performance requirement but also have the effect of that reliability, easy for installation and utilization rate are high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of casting tree of the present invention；
Fig. 2 is the structural schematic diagram of core-pulling slide block of the present invention.
Specific embodiment
Invention is described in further detail below.
A method of aluminium alloy spring base is produced with Horizontal type extrusion casting machine, wherein the production method is specific as follows:
(1) 7 temperature of molten aluminum selects the pouring temperature of aluminum alloy melt mainly according to aluminium alloy spring base product wall thickness and complexity come really
It is fixed；Secondly characteristic, filling velocity, room temperature and mold temperature in conjunction with alloy is also needed to comprehensively consider；(2) briquetting pressure, die mould pressure
The setting of power directly influences properties of product；When pressure setting is too low, the defects of product will appear shrinkage cavity and porosity；Work as pressure
It is arranged excessively high, press clamp force need to be increased, influence die life, influence the press service life.(3) shot position, low-speed position
And the calculating of filling velocity position, according to punch diameter and aluminium alloy weight can be poured into, find out position height value, please refer to following
Formula:
H: poured weights aluminium alloy height mm；
Wt: poured weights g；
D: punch diameter mm；
2.5: 7 density g/cm of molten aluminum3；
(4) filling velocity need to integrate product type, structure, cast gate to prevent from generating volume gas inside product, owing casting defect
Than etc. carry out calculating filling velocity, and be finely adjusted according to practical condition.Following public affairs are please referred to by cast gate injection speed
Formula calculates:
700-720 DEG C of the pouring temperature of aluminum alloy melt；The first switching point of filling velocity (at 20mm), the second switching point
(at 86mm), third switching point (at 200mm) speed are 200mm/ seconds, the 4th switching point (at 210mm), the 5th switching point
(at 245mm) speed is 70mm/ seconds；It is pressurized valve opening 50-60%；Briquetting pressure is 100MPa；Mold temperature is controlled in 180-
230℃.Product heat treatment parameter after forming are as follows: be heated to 535 DEG C and keep the temperature 5 hours；It is quenched within 15 seconds；It is put into after quenching
In 150 DEG C of holding furnaces, 4 hours are kept the temperature, is come out of the stove air-cooled.The mold of aluminium alloy spring base product includes pouring section and overflow part
Point；The pouring section includes in material handle 5, the ingate 3 being equipped on material handle 5 and the runner being equipped in material handle 5；It is described
Pouring section be distributed using fluid flow state and pressure, aluminium alloy spring base product is smoothly filled and consecutive solidification.It is interior
The design of cast gate 3 includes the contents such as position, shape, size.The thickness of ingate 3 should be greater than the wall thickness of product, avoid generating and owe
Casting, cold shut or it is loose the defects of.The position of ingate 3 is considered as planform, contraction distortion, the alloy kind of product in design
The factor of class, extrusion casint machine equipment and the performance to be achieved of casting 2 etc., cooperation use mold flow analysis software, point
Flow regime when metal aluminium liquid 7 flows packed type chamber is analysed, phenomena such as the volume gas being likely to occur in stowing operation, turbulent flow.Simultaneously also
Need reasonable Arrangement Exhausting System 1.
(5) core-pulling slide block 6, product middle part have the hole of φ 53 that need to cast out, and core-pulling device are provided in die top, by core pulling
Stick is designed to 3 degree of drafting angles, this taper facilitates feeding under the smooth filling and pressure of liquid stream, avoid product generate it is loose,
Shrinkage cavity defect, and it is able to satisfy design requirement.
Core-pulling slide block outer dimension: 145mm × 180mm, hydraulic core_pulling cylinder diameter are φ 100mm；Sliding block is resistance to using H13
Hot die steel material need to quench through overall vacuum and add surfaces nitrided processing.
According to product shape, running gate system has only opened up sprue and ingate 3, and running channel is located at aluminium alloy spring base product
Middle part, 3 sectional dimension of ingate are φ 35mm, thick greater than the arm of aluminium alloy spring base product.Ingate 3 and sprue length
(workpiece to material 5 length of handle) is 35-40mm；Material cake diameter is Φ 80mm, expects handle 5 with a thickness of 30-40mm.
The present invention can produce qualified aluminium alloy spring base using in Horizontal type extrusion casting machine implementation process.Specifically
Embodiment is: mold being properly attached on extrusion casting machine, the cooperation between mold and equipment is adjusted, connects cooling water
Pipe；Set technological parameter；Mold is preheated using die heater, after mold is preheated, extrusion casting machine is started to work, and one
As preceding 4 casting for adjusting mold temperature, without opening supercharging device, when mold temperature is in 180-230 DEG C, by given
Parameter starts normally to be produced.
Above-described is only some embodiments of the present invention.Without departing from the concept of the premise of the invention, also
It can make certain adjustments and improvements, but these are all within the scope of protection of the present invention.
Claims (1)
1. a kind of method with Horizontal type extrusion casting machine production aluminium alloy spring base, wherein the production method is specific as follows:
(1) temperature of aluminum liquid；700-720 DEG C of the pouring temperature of aluminum alloy melt；
(2) briquetting pressure；It is pressurized valve opening 50-60%；Briquetting pressure is 100MPa；
(3) shot position according to punch diameter and pours into aluminium alloy weight, finds out position height value, please refer to following formula:
H: casting aluminium alloy height mm；
Wt: weight alloy g is poured into；
D: punch diameter mm；
2.5: molten aluminum density g/cm3；
(4) filling velocity please refers to following formula by cast gate injection speed and calculates:
K: gating proportion,
Mold temperature is controlled at 180-200 DEG C；
The heat treatment parameter of aluminium alloy spring base product is to be heated to 535 DEG C to keep the temperature 5 hours；It is quenched within 15 seconds；After quenching
It is put into 150 DEG C of holding furnaces, keeps the temperature 4 hours, come out of the stove air-cooled；
The mold of aluminium alloy spring base product includes pouring section and overflow portion；The pouring section utilizes fluid flow shape
State and pressure distribution, smoothly fill aluminium alloy spring base product and consecutive solidification；
The thickness of ingate is greater than the wall thickness of aluminium alloy spring base product；
Running channel opens up position in the middle part of aluminium alloy spring base product, and aluminium alloy spring base product thickness is in 10mm-15mm, without setting
Cross gate；Ingate sectional dimension is φ 35mm；Material cake diameter is 80mm, and ingate and sprue length are 35-40mm；Expect handle
With a thickness of 30-40mm.
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| CN106493339B true CN106493339B (en) | 2019-02-15 |
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| CN112872321A (en) * | 2021-02-23 | 2021-06-01 | 广州和德轻量化成型技术有限公司 | Plate spring seat die for horizontal extrusion casting machine production and preparation method thereof |
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| JPS61253156A (en) * | 1985-04-30 | 1986-11-11 | Showa Alum Corp | Production of aluminum molding |
| JPS6267136A (en) * | 1985-09-19 | 1987-03-26 | Nippon Kokan Kk <Nkk> | Production of metallic composite material |
| JPS62296950A (en) * | 1986-06-18 | 1987-12-24 | Mazda Motor Corp | Metal pressure discrimination device for die casting |
| CN1129159A (en) * | 1994-02-28 | 1996-08-21 | 邱表来 | Pressure-extruding casting technology for production of high-strength anti-shock aluminium foundry goods |
| CN101152666A (en) * | 2006-09-25 | 2008-04-02 | 韦斌 | Extrution casting technique for aluminum alloy piston |
| CN101704088A (en) * | 2009-11-10 | 2010-05-12 | 姚国志 | Alloy liquid extrusion casting forming device and process method thereof |
| CN101905306A (en) * | 2010-07-16 | 2010-12-08 | 吴江市液铸液压件铸造有限公司 | Casting production process of alloy spring seat |
| CN102363211A (en) * | 2011-10-10 | 2012-02-29 | 陈伟军 | Extrusion casting method for aluminum alloy automobile speed changing box shell |
| CN105397065A (en) * | 2015-11-10 | 2016-03-16 | 苏州三基铸造装备股份有限公司 | Extrusion casting production technology of car clutch shell |
-
2016
- 2016-11-06 CN CN201610976636.9A patent/CN106493339B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61253156A (en) * | 1985-04-30 | 1986-11-11 | Showa Alum Corp | Production of aluminum molding |
| JPS6267136A (en) * | 1985-09-19 | 1987-03-26 | Nippon Kokan Kk <Nkk> | Production of metallic composite material |
| JPS62296950A (en) * | 1986-06-18 | 1987-12-24 | Mazda Motor Corp | Metal pressure discrimination device for die casting |
| CN1129159A (en) * | 1994-02-28 | 1996-08-21 | 邱表来 | Pressure-extruding casting technology for production of high-strength anti-shock aluminium foundry goods |
| CN101152666A (en) * | 2006-09-25 | 2008-04-02 | 韦斌 | Extrution casting technique for aluminum alloy piston |
| CN101704088A (en) * | 2009-11-10 | 2010-05-12 | 姚国志 | Alloy liquid extrusion casting forming device and process method thereof |
| CN101905306A (en) * | 2010-07-16 | 2010-12-08 | 吴江市液铸液压件铸造有限公司 | Casting production process of alloy spring seat |
| CN102363211A (en) * | 2011-10-10 | 2012-02-29 | 陈伟军 | Extrusion casting method for aluminum alloy automobile speed changing box shell |
| CN105397065A (en) * | 2015-11-10 | 2016-03-16 | 苏州三基铸造装备股份有限公司 | Extrusion casting production technology of car clutch shell |
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