CN207508236U - Aluminium copper structural member casting and forming internal densener structure - Google Patents
Aluminium copper structural member casting and forming internal densener structure Download PDFInfo
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- CN207508236U CN207508236U CN201721595592.1U CN201721595592U CN207508236U CN 207508236 U CN207508236 U CN 207508236U CN 201721595592 U CN201721595592 U CN 201721595592U CN 207508236 U CN207508236 U CN 207508236U
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Abstract
The utility model discloses a kind of aluminium copper structural member casting and forming internal densener structure, solve aluminium copper structural member and easily cause structural member in casting and occur the technical issues of cold and hot crackle at the time of molding.A kind of aluminium copper structural member casting and forming internal densener structure, including internal densener block（1）, in interior frozen iron blocks（1）Chill using face surface layer on apply be stained with one layer of quartz sand, the thickness of this layer of quartz sand is 0.2 0.6 millimeters, internal densener block（1）Thickness be 0.7 1.0 times of casting section thickness, internal densener block（1）Length no more than 110 millimeters, internal densener block（1）Width be not more than 110 millimeters.The mechanism that aluminium copper product is effectively overcome to occur in process of setting segregation.
Description
Technical field
The present invention relates to a kind of aluminium copper structural member casting and forming internal densener, more particularly to a kind of aluminium copper structure
Part casting and forming internal densener structure and its laying method.
Background technology
Using low, counter-pressure casting technological forming aluminium copper structural member, after the reinforcing of T5 state processings, mechanical properties value
σ b >=450MPa are can reach, σ 0.2 >=390MPa, δ 5 >=10% has the characteristics that, extensive use higher than alloy steel material performance
During civilian and defence product structural member casting and forming.Since aluminum bronze class alloy graining section is wider（As ZL201A is closed
Gold is converted to solid-state from liquid, and temperature range is about 102 DEG C）, there is higher hot tearing, loose, segregation tendency, in casting and forming
In the process, according to traditional technical cooling measure, the structural member interior tissue after casting and forming will appear loose, shrinkage cavity, cold
Fire check, segregation defects.During aluminum bronze class alloy structure part casting and forming, need using chill at thick big position, thermal center and its
It cools down slower position and is adjusted.Usually used chill material has Steel material（Containing cast steel）, cast iron, casting brass alloys,
These chills have the characteristics of cooling velocity is fast, and cooling capacity persistence is long, can promote the consistency of structural member interior tissue
With the raising of mechanical property, reduce the generation of the casting flaws such as structural member shrinkage porosite, shrinkage cavity, misty loose, hot tearing, but simultaneously to casting
Type（Sand core）Deformability bring larger obstruction power, easily cause structural member and occur cold and hot crackle at the time of molding.
Invention content
The present invention provides a kind of aluminium copper structural member casting and forming internal densener structure and its laying methods, solve
Aluminium copper structural member easily causes structural member in casting and occurs the technical issues of cold and hot crackle at the time of molding.
Aluminum bronze class alloy has higher hot and cold crackle formation mechenism in casting and forming process, and process of setting is as cold in do not placed
Iron, then it cannot be guaranteed that temperature field sequence is quickly cooled down, inside structural member after shaping and surface will appear fire check（It splits on surface
Dendroid is presented in line, and underbead crack is presented white and splits analysis shape）.After placing chill, when casting mold encounters slight obstruction and temperature unevenness
Even phenomenon apparent cold crack trend can occur in structural member surface.During foundry trial, by adjusting running gate system, sand
Core material, alloy smelting process are fabricated to sand core cavity body, reduce chill thickness, reduce chill surface area, on chill surface
Making technological measures, the structural member outer surface such as V-shaped groove still has crackle appearance, inside there is white crack segregation to occur.Analysis
Above-mentioned implementation process, confirmation are steel material, cast iron because chill not up to requires structural member forming process temperature field regulating power
And the chill of cast copper is applied to aluminium copper process of setting, since the fusing point of chill differs larger with aluminium copper fusing point, when
When aluminium copper liquid is in contact with chill, setting rate is larger, relatively also can be very big by cold ironing surface resistance, can be in aluminum bronze
Alloy structure part surface formation crack coalescence, the resistance formed after on the other hand being combined due to chill own wt with sand core, greatly
The value that resistance allows when aluminium copper structural member solidification shrinkage can crack outside molding aluminium copper structural member.
By thinking, the cold and hot seminess that aluminum bronze class alloy casting and forming process occurs mainly is made because chill design is unreasonable
Into.
The present invention is to solve more than technical problem by the following technical programs：
A kind of aluminium copper structural member casting and forming internal densener structure, including internal densener block, in the chill of interior frozen iron blocks
Using face surface layer, which applies, glues one layer of quartz sand, and the thickness of quartz sand is 0.2-0.6 millimeters, and the thickness of internal densener block is casting section thickness
0.7-1.0 times, the length of internal densener block is no more than 110 millimeters, internal densener block（1）Width be not more than 110 millimeters.
A kind of laying method of aluminium copper structural member casting and forming internal densener, it is characterised in that following steps：
The first step, selection cast aluminium material make internal densener block, and the thickness of internal densener block is 0.7-1.0 times of casting section thickness,
The length of internal densener block is not more than 110 millimeters, internal densener block（1）Width be not more than 110 millimeters；
Second step applies on interior frozen iron blocks using face surface layer and glues one layer of quartz sand, and the thickness of quartz sand is 0.2-0.6 millimeters；
Third step, the internal densener block that will be coated with quartz sand, are placed on aluminum bronze class material core cavity surface, and fill quartz
Chill is fixed in sand.
Chill is designed to cast aluminium material, and applied using process on chill using face surface layer and glue one layer of quartz sand（Tool
There is high temperature resistant effect）.Cast aluminium material chill has preferably heat absorption, thermal conductivity, by reasonably designing cast aluminium chill thickness, together
Sample can also have good persistence.The characteristics of cast aluminium material chill is maximum is that fusing point and aluminum bronze class alloy melting point are basically identical, when
Aluminum bronze class aluminium alloy is in contact moment with cast aluminium material chill, and cast aluminium chill surface will appear one layer of softening film（Seemingly melt non-molten
State, below quartz sand layer）, it greatly reduces frictional resistance during aluminium copper product surface solidification shrinkage, suitable for reducing
Product cooling velocity, eliminates crackle mechanism of production.
The present invention is applied to aluminium copper product casting process in addition to it can reduce and crack mechanism outside product, due to it
Have the characteristics that heat dissipation effect is fast, by that different structure aluminium copper products configuration different-thickness chill, temperature field can be promoted suitable
Sequence homogenizes, the mechanism that aluminium copper product can effectively be overcome to occur in process of setting segregation.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
A kind of aluminium copper structural member casting and forming internal densener structure, including internal densener block（1）, in interior frozen iron blocks 1
Chill using face surface layer, which applies, glues one layer of quartz sand, and the thickness of quartz sand is 0.2-0.6 millimeters, and the thickness of internal densener block 1 is casting
0.7-1.0 times of wall thickness, for the length of internal densener block 1 no more than 110 millimeters, the width of internal densener block 1 is not more than 110 millimeters.
A kind of laying method of aluminium copper structural member casting and forming internal densener, it is characterised in that following steps：
The first step, selection cast aluminium material make internal densener block 1, and the thickness of internal densener block 1 is the 0.7-1.0 of casting section thickness
Times, for the length of internal densener block 1 no more than 110 millimeters, the width of internal densener block 1 is not more than 110 millimeters；
Second step applies on interior 1 using face surface layer of frozen iron blocks and glues one layer of quartz sand, and the thickness of quartz sand is 0.2-0.6 millimeters；
Third step, the internal densener block 1 that will be coated with quartz sand, are placed on aluminum bronze class material core cavity surface, and filled stone
Chill is fixed in sand.
Claims (1)
1. a kind of aluminium copper structural member casting and forming internal densener structure, including internal densener block（1）, which is characterized in that inside
Frozen iron blocks（1）Chill using face surface layer on apply be stained with one layer of quartz sand, the thickness of this layer of quartz sand is 0.2-0.6 millimeters, interior
Frozen iron blocks（1）Thickness be 0.7-1.0 times of casting section thickness, internal densener block（1）Length no more than 110 millimeters, internal densener block
（1）Width be not more than 110 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721595592.1U CN207508236U (en) | 2017-11-25 | 2017-11-25 | Aluminium copper structural member casting and forming internal densener structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721595592.1U CN207508236U (en) | 2017-11-25 | 2017-11-25 | Aluminium copper structural member casting and forming internal densener structure |
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| CN207508236U true CN207508236U (en) | 2018-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107661967A (en) * | 2017-11-25 | 2018-02-06 | 山西江淮重工有限责任公司 | Aluminium copper structural member casting internal densener structure and its laying method |
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2017
- 2017-11-25 CN CN201721595592.1U patent/CN207508236U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107661967A (en) * | 2017-11-25 | 2018-02-06 | 山西江淮重工有限责任公司 | Aluminium copper structural member casting internal densener structure and its laying method |
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