CN106841018A - A kind of system of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance of test material - Google Patents
A kind of system of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance of test material Download PDFInfo
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- CN106841018A CN106841018A CN201710079674.9A CN201710079674A CN106841018A CN 106841018 A CN106841018 A CN 106841018A CN 201710079674 A CN201710079674 A CN 201710079674A CN 106841018 A CN106841018 A CN 106841018A
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- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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Abstract
The invention discloses a kind of system of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance of utilization extrusion process test material, the system includes the module such as sample preparation and installation, state modulator, Dynamic Corrosion process control, corrosion sample preparation and corrosive nature sign.In the present invention by the adjustment of parameters during Die Casting, by a kind of new structure of cast die for proposing, corrosive medium, temperature, abrasion cycle, flow velocity, the isoparametric control of motion state in low-melting-point metal liquid phase Dynamic Corrosion performance test are realized, it is final to obtain the partial data for evaluating the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance of material.The system provides technical support to evaluate corrosion resistance of the material during low-melting-point metal liquid phase Dynamic Corrosion such that it is able to complete the test of material corrosion performance at low cost.
Description
Technical field
The present invention relates to metal liquid phase Dynamic Corrosion test system, and in particular to a kind of low-melting-point metal liquid phase Dynamic Corrosion
Method of testing and equipment.
Background technology
In current industrial circle, to the demand of liquid metal bath, transmission pipeline, mould and other handling implements increasingly
Increase.These often subject the corrosion of high temperature fluent metal with the structural member of liquid metal directly contact, cause these materials
Fail and need constantly to change, and thus produce energy waste, while having an effect on and reducing production efficiency.In recent years, it is all
Corrosion of the melt of many document reports aluminium, steel, zinc, magnesium, gallium, lead, lithium metal etc. and its alloy to metal material.Wherein, perhaps
Many low-melting-point metals, such as zinc liquid can almost be sent out due to its chemism and affinity high with all of metal and its oxide
Biochemical reaction, becomes one of most rodent metal bath.Therefore, make in molten zinc casting, galvanizing by dipping and kirsite
The industries such as composite manufacture, liquid zinc corrosion causes the important spare parts such as crucible and mold to fail, and causes numerous security incidents.
At present, liquid zinc corrosion causes contact arrangement to fail one of problem for having turned into Zn Cr coating production process, similar situation aluminium,
Similarly exist in the industrial productions such as lead.
For problem above, domestic and international investigation of materials operator designs have gone out many new materials, such as ceramics, are combined, receive
Rice material and high-entropy alloy etc., it is intended to solve the problems, such as the corrosive wear that low-melting-point metal is faced in the industrial production.Then,
Newly-designed material is before putting into serial production, it is necessary to by very long and cumbersome performance test.Screen suitable by performance test
Material, it has also become exploitation novel corrosion-resistant corrosion material key technology, while also have good economic benefit.And in material
Resistance to liquid metal corrosion performance test aspect, the mode for generally taking static corrosion molten metal to soak sample both at home and abroad obtains number
According to its experimental result has larger gap with the actual corrosion condition of production built-in unit；And the rich enterprise of force, using high
Expensive high temperature and high pressure kettle carries out Dynamic Corrosion performance test, the corrosion condition that can more truly reflect in actual production process, but
Corrosion of the flowing that it also only only accounts for temperature, liquid metal to material, and the motion state of itself sample is have ignored to corruption
The influence of erosion.
It is therefore desirable to provide a kind of technological means to solve the problems, such as material corrosion performance test aspect.
The content of the invention
It is to provide a kind of low cost, the workable, degree of accuracy low melting point high, easy to control that the purpose of the present invention is
Metal liquid phase Dynamic Corrosion Performance Test System, to solve defect and deficiency that existing test system is present.
In order to achieve the above object, the present invention is adopted the following technical scheme that and is achieved：
A kind of system of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance of utilization extrusion process test material, it includes sample
The module such as preparation and installation, state modulator, Dynamic Corrosion process control, corrosion sample preparation and corrosive nature sign.
The present invention is further improved：A kind of dress of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance of test material
Put, by adjusting die casting machine technological parameter and a kind of newly-designed die casting, realize low-melting-point metal liquid phase Dynamic Corrosion
Corrosive medium, temperature, abrasion cycle, flow velocity, the isoparametric control of motion state in testing.
The present invention is further improved：In newly-designed die casting, the test examination in die casting is installed on
Sample can as needed take different cross sectional shapes (curved surface, plane, screw thread), and the rotation of sample can be realized by exterior motor
Transhipment is dynamic.
The present invention is further improved：In newly-designed die casting, be able to will be surveyed according to ProCAST simulation results
Sample of having a try flexibly is installed and is distributed in the position with different flowing velocities and flow regime such as sprue, cross gate and cast gate.
In the present invention, using hot chamber machine contour alloy species and parameter control system, realize corrosive medium species,
The regulation of temperature, pressure and other parameters；Corrosion sample is installed in die casting system different parts, will obtain different molten metals
Flow velocity；Corrosion sample takes different shapes from the section of molten metal contacts, will more truly reflect parts shape and size pair
The rule of corrosive nature influence；The motor of spinning sample mounting bar afterbody is connected to, is sample and molten metal rotates against fortune
It is dynamic that different rotating speeds are provided；The cooling water near resistive heater and casting being installed near mould sprue and cross gate
To abrasion cycle length be adjusted the corrosion temperature deviation of Control Assay by pipe.
Position distribution of the corrosion sample in running gate system, will be designed according to following principle：It is larger in cross-sectional area
Cross gate on installed according to the order from the close-by examples to those far off with a distance from sprue bear that flow velocity progressively slows down, temperature is gradually reduced, with
Molten metal corrosion sample based on layer flow mode；And install that flow velocity is very fast, be primarily subjected to Turbulence Flow state in ingate position
Corrosion sample.
Corrosion sample by rotating the electric rotating machine of mounting bar afterbody, be capable of achieving between sample and molten metal it is counterclockwise,
Clockwise movement, its rotary speed adjustable extent is：0~30 rev/min.
The cross sectional shape of corrosion sample can be prepared into the face of cylinder, monoplane, biplane and flank according to actual condition
Four types.
Brief description of the drawings
Fig. 1 is using the flow chart of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance system of extrusion process test material.
Fig. 2 is corrosion test sample different cross section shape schematic diagram.
Fig. 3 is the structural representation front view of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance mould of test material.
Fig. 4 is the structural representation top view of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance mould of test material.
In figures 3 and 4,1, solid plate, 2, sprue bush, 3, resistance wire, 4, sample mounting bar 1,5, cooling water pipe, 6, cover half
Insert, 7, guide pillar, 8, guide pin bushing, 9, cover half fixed plate, 10, dynamic mould fixing plate, 11, core, 12, moving die insert, 13, band rotational work
Can sample mounting bar 2,14, push pedal fixed plate, 15, push pedal, 16, fastener 1,17, push rod 1,18, die casting, 19, overflow launder,
20th, ingate, 21, push rod 2,22, corrosion sample 1,23, cross gate, 24, corrosion sample 2,25, setting element, 26, sprue,
27th, push rod 3,28, release link, 29, Bottom clamp plate, 30, support base, 31, moving platen, 32, fastener 2,33, fastener 3.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Flow shown in reference picture 1 is completed following steps by the embodiment of the present invention：
The first step：With reference to parts shape in actual industrial production, equal proportion scaling prepares corrosion sample, and surveying record
The physical parameters such as weight, size before sample corrosion.Wherein, structure shown in overall structure material reference picture 2 is prepared；Spraying
Or surface specially treated material completes related process on the basis of structure shown in Fig. 2.
Second step：Joined by the physics that low-melting-point metal (aluminium, zinc, lead, magnesium alloy) is set in ProCAST analogue systems
In number (density, shrinkage factor etc.) and die-casting technological parameter (pouring temperature, injection ratio pressure etc.) acquisition die-casting die casting system not
With the fluid flow state at position, flowing velocity and profiling temperatures.
3rd step：Emulation data are obtained according to second step, corrosion sample is completed in die casting as shown in Figures 3 and 4
Install.Simultaneously according to mould installion commissioning requirements by mould installion on hot chamber machine, and the pre-heat treatment is carried out to mould.
4th step：With reference to the optimal emulation data that second step is obtained, complete (to pour the setting of hot chamber machine technological parameter
Note temperature, injection ratio pressure, clamp force etc.)；Corrosion sample local temperature deviation resistance wire (3) and cooling water pipe as shown in Figure 3
(5) regulated and controled.
5th step：After the low-melting-point metal being positioned in hot chamber machine crucible reaches setting pouring temperature, start die casting
Production procedure, opens the external motor with spinfunction sample mounting bar 2.Molten metal is injected into cast gate under injection punch head effect
Set (2), solidifies after flowing through sprue (26), cross gate (23) and ingate (20) in casting (18) and overflow launder (19) place.It is short
After time pressurize cooling, 27) (17,21 and be removed from the molds whole running gate system, complete one by opening mold using push rod
Secondary press casting procedure.In the presence of guide pillar (7), guide pin bushing (8) and release link (28), mould closure is again started up injection punch head, enters
The compression molding process of row next round, so repeatedly.In extrusion process production repeatedly, corrosion sample (22 and 24) is by liquid
Metal corrodes repeatedly, untill the abrasion cycle for reaching setting.
6th step：After Dynamic Corrosion reaches the default period 1, first corrosion sample is taken out, with physical condition
Corrosion sample continue second round corrosion, the like, finally obtain all of corrosion sample.
7th step：The corrosion sample being removed from the molds, through weak acid and alcohol washes after, using supersonic wave cleaning machine, electricity
The equipment such as spark wire cutting machine, mounting press prepare different corrosive natures and characterize sample.
8th step：Corrosive nature is characterized.A () corrosion rate is characterized：The depth after sample is corroded and weight are measured, according to
The corrosion rate that formula calculates material is calculated according to corrosion rate；(b) corrosion interface morphology characterization：Using light microscope, sweep
Retouch electron microscope and obtain corrosion interface pattern photo directly perceived；C () corrosion product determines：Using X-ray electron diffraction instrument, power spectrum
The equipment such as instrument, electron probe determine sample by the product after the corrosion of low-melting-point metal liquid；The performance test of (d) corrosion product：Profit
Corrosion product hardness is measured with micro-hardness measurement meter.
9th step：According to the corrosive nature characterization result of the 8th step, the resistance to low-melting-point metal liquid phase Dynamic Corrosion of judgement material
The quality of performance, summarizes material corrosion relevant information.
According to above-mentioned implementation method, scope described in present invention can be implemented, and the present invention is not limited solely to above-mentioned reality
Apply mode.
The present invention provides the system that a kind of utilization extrusion process tests low-melting-point metal liquid phase Dynamic Corrosion performance, using this
System will in one apparatus complete multinomial corrosive nature test, obtain the full multidate information of material corrosion and judge that material corrosion is special
Levy.
Claims (4)
1. the system of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance of a kind of utilization extrusion process test material, it includes sample system
The modules such as standby and installation, state modulator, Dynamic Corrosion process control, corrosion sample preparation and corrosive nature sign.
2. the device of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance of a kind of test material according to claim 1, it is special
Levy and be：By adjusting die casting machine technological parameter and designing a kind of new die casting, low-melting-point metal liquid phase dynamic is realized
Corrosive medium, temperature, abrasion cycle, flow velocity, the isoparametric control of motion state in corrosive nature test.
3. the new die casting according to claim 1,2, it is characterised in that：It is installed on the test sample in die casting
Different cross sectional shapes can as needed be taken（Curved surface, plane, screw thread）, and the rotation of sample can be realized by exterior motor
Motion.
4. the new die casting according to claim 1,2, it is characterised in that：Test sample is mounted to be distributed in and directly pours
Road, cross gate and cast gate etc. are with different in flow rate and flow regime position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710079674.9A CN106841018A (en) | 2017-02-14 | 2017-02-14 | A kind of system of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance of test material |
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| CN201710079674.9A CN106841018A (en) | 2017-02-14 | 2017-02-14 | A kind of system of the resistance to low-melting-point metal liquid phase Dynamic Corrosion performance of test material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109870402A (en) * | 2019-03-04 | 2019-06-11 | 西南交通大学 | A kind of liquid alkali metal Dynamic Corrosion experimental provision |
| CN112192821A (en) * | 2020-09-17 | 2021-01-08 | 东莞市晔弘塑胶原料有限公司 | Method for evaluating corrosivity of pet plastic raw material to injection mold |
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|---|---|---|---|---|
| CN109870402A (en) * | 2019-03-04 | 2019-06-11 | 西南交通大学 | A kind of liquid alkali metal Dynamic Corrosion experimental provision |
| CN112192821A (en) * | 2020-09-17 | 2021-01-08 | 东莞市晔弘塑胶原料有限公司 | Method for evaluating corrosivity of pet plastic raw material to injection mold |
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Application publication date: 20170613 |
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